Art
[1]The present invention relates to a battery module for receiving the at least two cylindrical battery cells, and more particularly, to a battery pack including the efficiency improved battery module and connecting it to the installation of the extension of the plurality of battery modules.
[2]This application claims priority to an application for the Korea Patent Application No. 10-2017-0121278, filed on September 20, dated 2017, all information disclosed in the specification and drawings of that application is hereby incorporated by reference into this application.
BACKGROUND
[3]As of commercially available secondary batteries, nickel cadmium batteries, nickel hydrogen batteries, there are nickel-zinc batteries, lithium secondary batteries, etc., of which the lithium secondary battery is not to the memory effect hardly occurs as compared to a secondary battery of nickel-based free and can be charged and discharged , had very low self-discharge rate is under the spotlight as a high energy density advantages.
[4]These lithium secondary batteries, there is classified into cylindrical batteries, prismatic batteries, and pouch type batteries depending on the shape of the battery case incorporating the electrode assembly of a cathode / separator / negative electrode, in accordance with the miniaturization trend of the device thus suitable prismatic battery and the pouch-shaped the demand of batteries has increased dramatically.
[5]In general, a prismatic battery has a jelly-roll-type or a positive electrode of a stacked / separator / insert the cathode electrode assembly is in a prismatic battery case of a metal material covers the open top of the top cap then through the electrolyte injection hole on the top cap injecting an electrolyte sealing courses are designed for.
[6]In addition, the pouch-shaped battery is manufactured with an outer peripheral surface in the housing the electrode assembly in the pouch case of the laminated sheets heat-sealed state to the sealing structure.
[7]On the other hand, as the cells are devices that apply various screen as described above, the cell also away from a rectangular parallelepiped shape has been manufactured in various forms.
[8]Recently, as a way to overcome the instability of the existing power production of renewable energy is increasing interest in energy storage devices. The energy storage device, because it can store the excess power output constant is not required according to the climate change may not lack the overall amount of power.
[9]This energy storage device may include a plurality of associated devices that efficiently manages the electrical energy stored in the battery module, and these battery modules for storing electricity.
[10]In addition, the task of connecting together a plurality of battery modules arranged extension is necessary to configure such an energy storage device. However, the prior art electrically connecting a plurality of battery modules, consuming a lot of components in order to uniformly arranged them, were the amount of time required for installation is demanding installations. In particular, if you configure a large-scale energy storage, it is costly and time consuming to install a plurality of battery modules become exacerbated the problem.
Detailed Description of the Invention
SUMMARY
[11]Accordingly, an object of the present invention is to provide a battery pack comprising as designed to solve the above problems, the efficiency of the installation operation for the plurality of extension connection of the battery modules, and this improved battery module.
[12]It may be understood by the following description of Other objects and advantages of the present invention will be appreciated more clearly by the embodiment of the present invention. Also, the objects and advantages of the invention will be readily appreciated that this can be realized by the means as claimed and combinations thereof.
Problem solving means
[13]That the battery module according to the present invention for achieving the above object is, according to at least two or more electrically connecting a scalable battery module,
[14]A plurality of cylindrical battery cell is formed on the electrode terminal, respectively upper and lower;
[15]Insert receiving portion having a module housing having a plurality of hollow cylindrical shape to receive the battery cell;
[16]
One surface is electrically connected to in contact with the electrode terminal of the cylindrical battery cell, at least two of the plurality of cylindrical battery cell, a bus bar; And
[17]At least a portion of the one surface is in contact with the other surface of the bus bar is coupled to the cylindrical battery cells electrically, at least a portion of the other surface is in contact with the other one of the current collecting plate electrically connected to the cylindrical battery cell in the other one of the battery modules and a current collecting plate.
[18]
Here, the module housing is provided with an outer wall configured to define an interior space, said module external wall outer surface of the housing is formed with a guide engaging structure engaging projections and guide grooves are provided for guiding the placement of the other one of the battery modules .
[19]
In addition, the engaging projection, may be a protrusion extending structure from the outer surface of said outer wall, wherein the guide groove, is recessed inward from the outer surface of said outer wall so that the other one of the engaging projection of the battery module can be inserted is formed can.
[20]
Furthermore, the module housing, the upper case having a first accommodating portion formed in the hollow structure to surround the upper outer surface of the cylindrical battery cells; And it may include a second receiving portion of the lower case is provided with fastening the upper case, formed of a hollow structure so as to surround the outer surface of the bottom of the cylindrical battery cells.
[21]
And, the upper case is entered into the first protrusion projecting in one side extends in the outer surface of said outer wall, a through hole is formed so that the fastening bolt is inserted is formed in the left-right direction may be provided with parts.
[22]
Further, the lower case, and extending the other protruding toward at an outer surface of said outer wall, and comprising a fastening second protruding a through-hole formed so that the fastening bolt is inserted, wherein said through-hole of the locking part 2 protrudes is formed in the horizontal direction is entered the bolt may be inserted in succession to communicate with the through-hole fastening the first projecting portion of the upper case of the other battery modules.
[23]
Moreover, the first receiving portion of the upper case, may be provided with a raised portion protruding inwardly to hold the pressure of the cylindrical battery cells on the inner surface facing the cylindrical battery cell.
[24]
Then, the first receiving portion of the upper case, may be provided at the top of a hollow section of the cut shape to a predetermined point in the lower part direction.
[25]
Further, the inner surface of the cutting portion, may be the convex portion is formed.
[26]
Moreover, the cutting portion, wherein the first received and located in correspondence with each other as cut-out portion of the other hollow portion, the cutting portion may be spaced apart by a cut-out portion with a distance of the other hollow structures.
[27]
In addition, the bus bar, a plate body extending in the direction of the cylindrical battery cells are arranged; And it may include the terminal connection part extending in the protruding one end of the main plate so as to contact the electrode terminal of the cylindrical battery cells.
[28]
On the other hand, the electrode terminal of the cylindrical battery cell may include a second electrode terminal formed on the first electrode terminal formed in the upper and lower ends.
[29]
In addition, the first current collector plate and the current collector plate is mounted on the upper portion of the module housing is formed such that the first electrode terminal and electrically connected to the cylindrical battery cells; And it may include a second current collecting plate is formed to be mounted and electrically connected to the second electrode terminal of the cylindrical battery cell in a lower portion of the module housing.
[30]
Furthermore, the first current collector plate, the first current collector is formed to be in contact with the upper surface of the bus bar is connected in contact with the first electrode terminal of the cylindrical battery cells; And is formed extending forward from one end of the first current collector, the contact accommodated in the lower direction may be provided with steps formed parts.
[31]
And, the second current collecting plate, the second current collector formed to be in contact with the lower face of the bus bar is connected in contact with the second electrode terminal of the cylindrical battery cells; The part 2 vertically extending from one end of the current collector part is perpendicularly bent upward extension; And it is seated on the contact receiving portion of the first current collecting plate may include a contact connection part is formed to extend rearward from the bent upper end of the vertical extending portion to the first current collecting plate and electrically connected.
[32]
Further, when the contact receiving portion is may be a projection protruding in a lower direction by at least one form, the contact connection portion may be a groove in the shape corresponding to the contact portion receiving projection is formed by at least one.
[33]
Furthermore, in the vertical extension part, a through-hole in the coupling projection and a position corresponding to the guide groove it may be formed with a coupling protrusion of the coupling guide structure so that the through.
[34]
Then, the battery pack according to the present invention for achieving the above object is a battery module according to the invention at least two.
[35]
Furthermore, the vehicle according to the present invention for achieving the above object, includes a battery pack according to the present invention;
[36]
That further, relates to a battery module according to the present invention for achieving the above objects is at least two or more electrically connecting a scalable battery module,
[37]
A plurality of cylindrical battery cell is formed on the electrode terminal, respectively upper and lower;
[38]
Insert receiving portion having a module housing having a plurality of hollow cylindrical shape to receive the battery cell;
[39]
One surface is electrically connected to in contact with the electrode terminal of the cylindrical battery cell, at least two of the plurality of cylindrical battery cell, a bus bar;
[40]
At least a portion of the one surface is in contact with the other surface of the bus bar is coupled to the cylindrical battery cells electrically, at least a portion of the other surface is in contact with the other one of the current collecting plate electrically connected to the cylindrical battery cell in the other one of the battery modules a current collector plate;
[41]
An insulating plate formed so as to be located in contact with one side of the outer surface of the outer wall of the module housing;
[42]
A is inserted into the inside of the insulating plate, projecting from the outer periphery of the insulation plate in the vertical direction support bar; And
[43]
Together with the supporting bar, it may include a lock member configured to engage the current collector plate.
[44]
Further, the module housing is provided with an outer wall configured to define an interior space, said module external wall outer surface of the housing is formed with a guide engaging structure engaging projections and guide grooves are provided for guiding the placement of the other one of the battery modules .
[45]
Further, in one side outer surface of the outer wall of the module housing, being recessed inward and the recess groove extending in the vertical direction can be formed, wherein the recess grooves, the said tie rod can be inserted into storage.
Effects of the Invention
[46]
According to an aspect of the invention, the battery module can be easily one of the other battery module, the battery module without the need for additional members, via guide coupling structure of the module housing placed in position. Accordingly, it is possible to reduce the cost and time required for the battery module of the present invention when a plurality of connection extension installation effectively.
[47]
Further, according to this aspect of the invention, by the stopper structure is formed on a receiving portion of the module housing, and accommodated in a cylindrical battery cell can be effectively prevented from escaping to the outside, is bound is an upper direction of the movement of the cylindrical battery cells cylindrical in that the electrical connection between the battery cell and the bus bar disconnection can be prevented in advance.
[48]
Moreover, according to an aspect of the invention, the terminal connecting portion of the bus bar in electrical contact connected to the electrode terminal of the cylindrical battery cell, formed of a branched structure into two, whereby the terminal connecting portion and the welding process between electrode terminals, branched increase the thermal conductivity for heat welding the structure through the gap effectively, it is possible to shorten the welding time and improve the weld reliability.
[49]
And, according to one aspect of the invention, the second through the protrusion and the contact receiving portion receiving groove coupling structure of the first current collecting plate in contact with the connection, the contact connection part of the first current collector plate and the second current collector of the current collecting plate plate of it may be derived so as to be easily secured to the contact receiving portion, by increasing the contact area to reduce the effective electrical resistance can be improved electrical connection reliability.
[50]
Further, according to an aspect of the invention, the first receiving the convex portion formed to press the outer surface of the cylindrical battery cell unit, it is possible to reduce the connection failure between the cylindrical battery cells and the bus bars of the vibration to the flow caused by an external impact, It can effectively reduce the damage of the cylindrical battery cell.
[51]
Further, according to an aspect of the invention, it is possible to configure the battery pack in the upper plurality of battery modules in a variety of multilayer structure, such as to laminate a different plurality of battery modules, and the additional manufacturing costs due to a design change of the battery pack, there is an advantage that can save.
Brief Description of the Drawings
[52]
Intended to illustrate the following figures attached to the specification are exemplary of the invention, the components which serve to further understand the spirit of the invention and together with the description of which will be described later invention, the details of this invention is described in such figures be construed as limited only is not.
[53]
1 is shown separated by separating the various configurations for the battery module, a perspective view according to one embodiment of the present invention.
[54]
2 is a perspective view schematically illustrating the front of the battery module in accordance with one embodiment of the present invention.
[55]
3 is a perspective view schematically showing the rear side of the battery module in accordance with one embodiment of the present invention.
[56]
4 is a plan view and a partially enlarged view enlarging a part of some of the upper portion showing a configuration for a battery module in accordance with one embodiment of the present invention in the form as viewed from top.
[57]
5 is a perspective view schematically illustrating a part of the configuration of the battery module in accordance with one embodiment of the present invention and a partially enlarged view enlarging a part of some of the above.
[58]
6 is a perspective view schematically illustrating a part of the configuration of the battery module in accordance with one embodiment of the present invention.
[59]
7 and 8, are perspective views schematically showing a part of configuration of the battery module in accordance with one embodiment of the present invention.
[60]
9 is a battery module in accordance with one embodiment of the invention a perspective view schematically showing a structure connected to each other.
[61]
10 is a vertical cross-sectional view schematically showing a part of configuration of the battery module of the C 'domain of FIG.
[62]
11 is shown separated by separating portion configured for a battery module according to a perspective view of another embodiment of the present invention.
[63]
12 is a perspective view showing a state that combines some of the configuration of the battery module of FIG.
[64]
13 is a perspective view schematically showing the one form of the battery pack according to an embodiment of the present invention.
[65]
14 is a perspective view schematically showing a third aspect of the battery pack according to another embodiment of the present invention.
[66]
15 is a perspective view schematically showing a still another form of a battery pack according to another embodiment of the present invention.
Mode for the Invention
[67]
With reference to the accompanying drawings will be described a preferred embodiment of the present invention; Prior to this, the specification and are not to be construed as limited to the term general and dictionary meanings used in the claims, the inventor accordingly the concept of a term to describe his own invention in the best way It interpreted based on the meanings and concepts corresponding to technical aspects of the present invention on the basis of the principle that can be defined.
[68]
Accordingly, the configuration shown in the examples and figures disclosed herein are in not intended to in the technical idea of ​​the present merely nothing but the embodiment most preferred embodiment of the present invention invention, a variety that can be made thereto according to the present application point It should be understood that there are equivalents and modifications.
[69]
[70]
1 is shown separated by separating the various configurations for the battery module, a perspective view according to one embodiment of the present invention. 2 is a perspective view schematically illustrating the front of the battery module in accordance with one embodiment of the present invention. And, Figure 3 is a perspective view schematically showing the rear side of the battery module in accordance with one embodiment of the present invention.
[71]
1 to 3, a battery module 200 of the present invention may include, a cylindrical battery cell 100, the module housing 210, the bus bar 250 and the current collecting plate (230, 240) .
[72]
Here, the cylindrical battery cell 100 may include an electrode assembly (not shown) accommodated in the interior of a cylindrical battery can 120, and the battery can 120.
[73]
Here, the battery can 120, and includes a highly electrically conductive material, for example, the battery can may include aluminum or copper materials. The top and bottom respectively of the battery can 120 and the electrode terminals 111 and 112 may be formed. Specifically, it can be the first electrode terminal 111, the upper surface of the flat circular is at the top of the battery can 120 is formed, the lower face of the flat circular at the bottom of the battery can 120, the second electrode terminal (112 ) it can be formed.
[74]
The electrode assembly (not shown), the jelly in a state of sandwiching the separator between the anode and the cathode may be formed into a structure wound in a roll. The positive electrode (not shown) has been attached to the positive electrode tab may be connected to the first electrode terminal 111 of the upper end of the battery can 120. In addition, the negative electrode (not shown), the negative electrode tab is attached may be connected to the second electrode terminal 112 of the lower end of the battery can 120. However, this is just one example of, but are not necessarily limited only to this configuration. For example, anti-said positive electrode (not shown) there is a positive electrode tab attachment may be connected to the second electrode terminal 112 of the lower end of the battery can 120, and the cathode (not shown), the cathode the tab is attached, may be connected to the first electrode terminal 111 of the upper end of the battery can 120.
[75]
Further, the first support portion has a portion 115 of the ring shape may be formed so as to support the bottom outer periphery of the second electrode terminal 112. Therefore, according to this configuration of the invention, the cylindrical battery cell 100, it is possible to maintain a state where the upstanding from the floor by using the support portion 115 without the need for a separate member in a stable manner.
[76]
On the other hand, the module housing 210, it may be provided in which the cylindrical battery cell 100 to accommodate the inserts within the receiving portion (212A, 212B). Specifically, the receiving unit (212A, 212B) is a hollow structure that is formed to surround the outer surface of the cylindrical battery cell 100 may be formed in plurality. In this case, the module housing receiving portion (212A, 212B) of the unit 210, may be provided with an electrically insulating material. For example, the electrically insulating material may be a polymeric plastic. May be more specifically, the electrical insulation material is, PVC (Polyvinyl chloride).
[77]
In addition, the module housing 210 includes a first outer wall 215 is made so as to form an internal space formed by the former, and then, left and right direction, and the second outer wall 216, a third outer wall 217, and the 4 may have an outer wall (218).
[78]
The first outer wall 215, a second outer wall 216, a third outer wall 217, and a is at least one of the four outer wall 218, and the other of the battery module (200 of the module housing (210) ) has the engaging projection 261 and 262 and the guide grooves 266 and 267, a guide provided with a coupling structure 260 for guiding the placement position can be formed.
[79]
4 is a plan view and a partially enlarged view enlarging a part of some of the upper portion showing a configuration for a battery module in accordance with one embodiment of the present invention in the form as viewed from top.
[80]
Figure 2 and in conjunction with Figure 3, and 4, the engaging projection 262 of the module housing 210, the structure may be a protrusion extending from the outer surface of the second outer wall (216B). Specifically, the upper end of the projecting direction of the engaging projection 261, may be formed from a relatively greater thickness than the thickness of the lower end of the engaging projection 262 adjacent to the outer side of the second outer wall (216B).
[81]
Moreover, the upper end of the projecting direction of the engaging projection 262, a second outer wall (216B) is a continuous thickness in the lower direction may be formed with a tapered structure (T1) that is thick.
[82]
Further, the engaging projection 262, so that there is a center split in the left-right direction gap (H) can be formed along the axis.
[83]
The gap (H) is, is recessed to a predetermined depth from the upper end of the engaging projection 262 in the direction in which the outer wall (215, 216, 217, 218) is located may be formed. Wherein the recessed depth may extend to the outer surface of the second outer wall (216B).
[84]
Further, FIG engaging projection 261 of the module housing 210 of the second addition, it may be configured in the same manner as previously described coupling of Figure 4 projection 262 configuration, the configuration described of the engaging projection 261 will be omitted.
[85]
Therefore, according to this configuration of the present invention, since the engaging projection 261 and 262 of the module housing 210 of the present invention, is inserted into the guide grooves 266 and 267 can be fastened, a battery module (200 ) the other battery modules (9, as well as to easily place a 201) connected to, can be fixed so as not be easily separated from each other.
[86]
Back 2 and 3, the guide groove 266, so that the other one of the engaging projection 262 of the battery module 200 can be inserted into indentations in the inside direction from the outer surface of the first outer wall 215, It may be configured in the form.
[87]
Further, the guide groove 267 is, the other one can be composed of a recessed shape in the inside direction from the outer surface of the first outer wall 216, so that can be inserted into the engaging projection 261 of the battery module 200.
[88]
Furthermore, the guide grooves 266 and 267 of the inside engaging shoulder so that the upper end of the engaging projection (261, 262) can block the movement of the discharge direction after the insertion (not shown) may be formed.
[89]
5 is a perspective view schematically illustrating a part of the configuration of the battery module in accordance with one embodiment of the present invention and a partially enlarged view enlarging a part of some of the above.
[90]
Again with 2 to 4, with reference to Figure 5, the module housing 210 may include an upper casing (210A) and a lower casing (210B).
[91]
Specifically, the upper case (210A) may comprise a first outer wall (215A), the second outer wall (216A), the third outer wall (217A) and a fourth outer wall (218A). Further, the lower casing (210B in Fig. 4) may include a first outer wall (215B), the second outer wall (216B), a third outer wall (217B) and the fourth outer wall (218B).
[92]
For example, as shown in FIGS. 5 and 2, the upper casing (210A), said first outer wall (215A) two of the guide grooves 267 formed in the other of the module housing 210 to the outer surface of the there are two engaging projections 261 may be formed so as to be inserted into each. Further, the lower casing (210B) has a first outer wall (215B), two engaging projections 262 formed on the other of the module housing 210 to the rear outer surface insert such that the two guide grooves 266 are to be formed of can.
[93]
Further, 2 to the above, the upper casing (210A), the second coupling protrusion 261 formed on the other of the module housing 210 to the outer surface of the outer wall (216A) the coupling insert shown in FIGS. 3 and 5 the two guide grooves 267 may be formed. In addition, the lower casing (210B) has a second formed on the other of the module housing 210 to the outer surface of the second outer wall (216B) of the guide groove 266 is formed with two engaging projections 262 to be inserted into each of can.
[94]
If in conjunction with Figure 4 to Figure 5, the upper case (210A) has a first receiving portion (212A) formed of a hollow structure so as to surround the outer surface of the upper part of the cylindrical battery cell 100 may be provided.
[95]
Moreover, the lower casing (210B) has been concluded and the upper casing (210A), a second receiving portion (212B), the lower outside of the formed hollow structure so as to surround the side surfaces of the cylindrical battery cell 100 may be provided have.
[96]
Therefore, according to this configuration of the invention, the module housing 210 includes a first receiving portion (212A) and second using the second receiving portion (212B) ends in the upper and lower outer surface of the cylindrical battery cell 100, can be accommodated, it is possible to reliably protect the cylindrical battery cell 100, received from an external impact.
[97]
Then, the upper end of the first receiving portion (212A), there is the top of the cylindrical battery cell 100 can be formed with a stopper 219 for preventing from moving to the upper portion of the first receiving portion (212A).
[98]
Specifically, the hollow structure of the stopper 219, the cylindrical battery cell 100 may be a circular-arc-shaped structure of the narrow diameter than the top diameter of the stopper 219, the first receiving portion (212A) It may be the center of an arcuate structure extending projecting in an axial direction from the top.
[99]
Therefore, according to this configuration of the invention, the cylindrical battery cell 100 housed in the interior of the module housing 210, effectively can be prevented from escaping to the outside by the stopper 219, the motion is constrained to the upper direction since the flow is prevented, and the damage such as disconnection that this electrical connection to the bus bar 250 can be prevented in advance.
[100]
6 is a perspective view schematically illustrating a part of the configuration of the battery module in accordance with one embodiment of the present invention.
[101]
6, the bus bar 250, a surface structure is in contact with the electrode terminals (111, 112) of at least two cylindrical battery cells 100 of the plurality of cylindrical battery cells 100 are electrically coupled to It may contain.
[102]
Specifically, the bus bar 250, may comprise an electrically conductive material, for example, may comprise a nickel material.
[103]
In addition, the bus bar 250 may include a main body plate 251 and a terminal connection part (256).
[104]
Here, the body plate 251 may be a structure extending in the direction of the cylindrical battery cell (G) the 100 is arranged. In addition, the terminal connection part 256 may be a protruding structure extending from one end of the main body plate 251 is in contact with the electrode terminals 111 and 112 of the cylindrical battery cell 100.
[105]
More specifically, the terminal connection part 256 is, as viewed in the F direction, may be a protrusion extending rearwardly from the main structure plate 251.
[106]
In addition, the terminal connection part 256, a step (257) of the lower direction may be formed from the main plate 251. Therefore, according to this configuration of the invention, the terminal connection part 256 of the bus bar 250 can be easily formed in the contact surface and the electrode terminals 111 and 112 of the cylindrical battery cell 100, the reliability of the electrical connection to be increased.
[107]
Here, the term used in the same direction before and after, left, right, up, Eve may be changed according to the position and form are placed in the target of the observer. However, this specification, for convenience of explanation, on the basis of when seen in the F direction, and to show separately the direction of before, after, left, right, up, down and the like.
[108]
For example, the five buses and parallel connection by 30 cylindrical battery cell the first electrode terminal electrically in one direction (G) to 111 of 100 bar (250 as shown in FIGS. 1 and 6 ) it can be configured. Similarly, the cylindrical battery cell 30 a second electrode terminal 112, the five bus bar 250 which is electrically connected in parallel in one direction (G) of 100 can be constructed.
[109]
In addition, the terminal connection part 256 may include a branched structure into two. Therefore, according to this configuration of the invention, the thermal conductivity for the welding heat through the separation gap in accordance with the two branches in the lateral direction in the center portion structure of the terminal connecting portion (256) that require melt bonding during welding formed improve the effective and can shorten the welding time and improve welding reliability.
[110]
7 and 8, are perspective views schematically showing a part of configuration of the battery module in accordance with one embodiment of the present invention.
[111]
Referring to Figure 7 and 8 with a 1, the current collecting plate of the present invention may include a first current collecting plate 230 and the second current collecting plate 240.
[112]
Specifically, the first current collecting plate 230 may include an electrically conductive material, for example, the electrically conductive material may be a copper or aluminum.
[113]
In addition, the first current collecting plate 230, to at least a portion of the one surface is in contact with the other surface of the cylindrical battery cell 100, the first electrode terminal and the electrical bus bar 250 coupled to the cylindrical battery cell 100 and electrically to be connected. In other words, the first current collecting plate 230 is mounted on top of the module housing 210 may be the first electrode terminal 111 and electrically connected to the structure of the cylindrical battery cell 100. At this time, the other surface of the first current collecting plate 230 side and the bus bar 250 a may be a combination structure is a laser welding.
[114]
Furthermore, the second current collecting plate 240, may comprise an electrically conductive material, for example, the electrically conductive material may be a copper or aluminum.
[115]
And, the second current collecting plate 230, to at least a portion of the one surface is in contact with the other surface of the second electrode terminal 112 and the electrical bus bar 250 coupled to the cylindrical battery cell 100, the cylindrical battery cell (100 ) and it may be electrically connected. In other words, the first may be a second current collecting plate 240 is mounted on the lower portion of the module housing 210, the second electrode terminal 112 and electrically connected to the structure of the cylindrical battery cell 100. At this time, the other surface of the one side and the bus bar 250 of the second current collecting plate 240 may be a combination structure is a laser welding.
[116]
More specifically, it may include a first current collecting plate 230, the first current collector 231 and the contact receiving portion (233).
[117]
Here, the first current collector 231 may be configured to contact the upper surface (main plate, 251) of the bus bar 250 is connected in contact with the first electrode terminal 111 of the cylindrical battery cell 100, . Further, the first current collector 231 may be a terminal connection part to obtain weld 234 to be exposed to the exterior 256 of the bus bar 250 is formed.
[118]
In addition, the contact receiving portion 233, the first has at least a portion of one end of the current collector 231 may be formed extending in the front and, the step structure 232 formed in a lower direction. To help reduce the electrical resistance, e.g., the contact receiving portion 233, as shown in FIG. 7 may be the entire one end of the first current collector 231 is formed extending in the forward direction .
[119]
More specifically, the second current collecting plate 240 may include a second current collector 241, a vertically extending portion 243 and the contact connection 245.
[120]
Here, the second current collector may be formed (241), when the bus bar 250 is connected in contact with the second electrode terminal 112 of the cylindrical battery cell 100 so as to contact the (main plate). More specifically, the second current collector 241 may be a weld opening (244) so ​​that each terminal connection part 256 may be exposed to the outside of the bus bar 250 is formed.
[121]
Further, the vertical extension part 243 may be a, the second is perpendicularly bent upward from one end of collector 241 extending structure. Furthermore, the vertical extension part 243 has the guide coupled with the engaging projection of structure 260 (FIGS. 2 and 3, 261, 262) through the position corresponding to the engaging projections 261 and 262 so that the through- the spheres 247 and 248 may be formed. For example, it may be a, the vertical extension part 243, four through-spheres 247 and 248 as shown in Figure 8 is formed.
[122]
And, of the contact connection portion 245, the first current collecting plate 230 is secured to the contact receiving portion 233, the first current collecting plate 230, to be electrically connected to the vertical extension part 243 of the from the top it may be a structure extending bent rearward.
[123]
Further, the second current collector 241, a vertically extending portion 243 and the contact connection portion 245 may be an integrated structure made of a single material. That is, in the manufacturing process of the second current collector plate 240, a portion of one of the conductive plate above is formed of a second current collector 241, the remaining part is perpendicularly bent upward by the vertical extension parts (243) and forming, the one end of the vertical extension part 243 is bent in the horizontal direction of the back may be formed of a contact connection part (245).
[124]
9 is a battery module in accordance with one embodiment of the invention a perspective view schematically showing a structure connected to each other. And, Figure 10 is a vertical cross-sectional view schematically showing a part of configuration of the battery module of the C 'domain of FIG.
[125]
First, Referring to Fig, 10 with 7 to 9, when the second of the contact connection portion 245 of the current collecting plate 240 is, the protrusion 246 protruding downward may be formed of at least one the contact receiving portion 233 may be protrusions 246, the receiving groove 235 of the shape corresponding to the contact of the receiving portion 233 is formed at least one.
[126]
In this way, the projection 246 of the contact connection portion 245 of the second current collecting plate 240 may be fixedly inserted into the receiving groove 235 of the contact receiving portion 233 of the first current collecting plate 230 have.
[127]
Therefore, according to this configuration of the present invention, as the receiving groove 235 of the projection 246 with the contact receiving portion 233 of the contact connection portion 245 is engaged with each other, the contact connection portion 245 is receiving the contact portions ( 233) as well as be able to be easily mounted, the contact area by increasing the effective to reduce the electric resistance can be improved electrical connection reliability.
[128]
Further, the first may be the first contact receiving portion 233 has (welding line) joining line to increase the contact connection portion 245, and welding usability of the second current collecting plate 240 of the current collecting plate 230 is formed.
[129]
Referring back to FIG. 2, 3, and 9, the upper case (210A) has a first protruding coupling part may be provided with a (271), the lower casing (210B) has entered into the second protruding portion 276 It may be provided.
[130]
Here, the first protruding coupling unit 271, in the outer surface of the third outer wall (217A) and the fourth outer wall (218A) of said upper casing (210A) can be extended protrusion formed to the front or back, the fastening bolt (279) may be a through hole 272 formed so as to be inserted. E., The two rear on the outer surface of the first protruding coupling unit 271, the upper case (210A), the third outer wall (217A) and the fourth outer wall (218A) of, as example, illustrated in Figure 3 extending protrusion may be formed.
[131]
And, as in Figure 2, the second protruding coupling part 276, the third outer wall (217B), and may be formed extending projecting forward or backward from the outer surface of the fourth outer wall (218B), the fastening bolt (279) may be a through-hole (277) formed to be inserted. For example, as shown in Figure 2, the two second protruding coupling part 276, the outer surface of the third outer wall (Fig. 4, 217B) and the fourth outer wall (218B) of the lower casing (210B) in may be formed extending projects rearward.
[132]
Here, the through-hole (277) is a fastening bolt (279) is to be subsequently inserted into the first protruding coupling parts 271 of the upper casing (210A) of the other battery module 200 of the second protruding coupling part 276 a may be in communication with the through-hole 272. the Accordingly, the fastening bolt 279 is inserted into both the first protruding coupling part 271 and the second protruding connection part 276 may be fastened.
[133]
Therefore, according to this configuration of the invention, the first protruding coupling parts 271 of the second protruding coupling parts 276 of the lower casing (210B) of the other battery module 200 and the bolt coupling of the upper casing (210A) Thereby, it is possible to prevent the prevent the arrangement of the battery module 200 disturbance and, in particular, the electrical connection between the first current collecting plate 230 and the second current collecting plate 240 is broken. Furthermore, in order to combine the conventional connecting a plurality of battery modules of the technology, there is a plurality of battery modules need to be spaced at a predetermined distance due to the volume of the coupling structure. However, the battery module of the present invention, the first protruding connection part 271 and the second protruding connection part 276 extending a vertical height from each other so as to face each other in the vertical direction from the other part is, while minimizing the volume of the coupling structure , it can easily be connected to combine a plurality of battery modules. Accordingly, there is an advantage in increasing the energy density of the battery module, can reduce installation time.
[134]
Referring again to Figure 5, the first receiving portion (212A) of said upper casing (210A), the fixing pressure to the side of the cylindrical battery cell 100, the inner surface facing the lateral surface of the cylindrical battery cell 100, a fixed structure can be formed.
[135]
Here, the fixing structure, the convex portion protruding so as to press the outer surface of the cylindrical battery cell 100, the cylindrical battery cell 100 in the horizontal direction (inward direction) in the inner surface of the first receiving portion (212A) 213 may be a.
[136]
Therefore, according to this configuration of the invention, the fixed structure, and is an effective way of reducing the ground fault between the cylindrical battery cells 100 and bus bar 250 of the vibration to the flow caused by an external impact, the cylindrical battery cell (100 ) it can effectively reduce the damage.
[137]
In addition, the first receiving portion (212A) of said upper casing (210A), may be provided with a cut away from the top of a hollow structure in the lower direction to a predetermined point, cut-form (214). That is, both sides of the cut-out portion 214 has a gap (S) took place from the hollow structure of the first receiving portion (212A) can be formed. At this time, the inner surface of the cut-out portion 214, the center may be formed with the convex portion 213.
[138]
Furthermore, the cutting unit 214, the first can be positioned to correspond to each other and cut-out portion 214 of the other hollow structure of the first receiving portion (212A). In addition, the cut-out portion 214 may be spaced apart by a cut-out portion 214 and a distance of the other hollow structures.
[139]
Therefore, according to this configuration of the invention, the cut-out portion 214, the convex portion 213 is so can be elastically pressed into the side of the cylindrical battery cell 100, the cylindrical battery cell 100 is the to be easily inserted into the first receiving portion (212A), and a convex portion at a constant pressurizing force can be pressed to one side of the cylindrical battery cell 100.
[140]
11 is shown separated by separating portion configured for a battery module according to a perspective view of another embodiment of the present invention. And, Figure 12 is a perspective view showing a state that combines some of the configuration of the battery module of FIG.
[141]
11 and 12, the battery module (200C) according to another embodiment may comprise an insulating plate 295, support bar 297 and the fastening member (299).
[142]
Specifically, the insulating plate 295 may be formed so as to be located in contact with the outer surface of the outer wall (218C) of the module housing (210C).
[143]
Further, the support bar 297 may be, it is inserted into the interior of the insulation plate 295, the shape projected from the outer periphery of the insulating plate 295 in the vertical direction.
[144]
Further, the fastening member 299, with the support bar 297, it can be configured to be fastened to the outer wall (218C) of the module housing (210C).
[145]
And, the recessed inward at a side outer surface of the outer wall (218C) of the module housing (210C) has a recessed groove (D) extends in the vertical direction can be formed. Furthermore, the support bar 297 inserted into the insulation plate 295 may be fixed to the insertion recessed groove (D).
[146]
13 is a perspective view schematically showing the one form of the battery pack according to an embodiment of the present invention.
[147]
13, the battery pack 1000 according to the present invention, the battery module 200 may include at least two. Specifically, the at least two battery modules (200, 201, 202, 203) is, may be a structure disposed aligned in one direction. For example, the four battery modules (200, 201, 202, 203) are arranged aligned in the longitudinal direction, the four battery modules (200, 201, 202, 203) as shown in Figure 13 electrically to each other to be connected in series.
[148]
In addition, the battery module 202 is the liquid containing the three current collecting plate 236 and, and the third current collector plate 236 is to be connected to contact electrically with an external input terminal 280, bent in a downward direction outside a terminal contact portion 237 may be formed.
[149]
Furthermore, the external terminal, the contact portion 237 can be a connection groove 238 formed to be recessed inward from one end forming. In addition, the connection groove 238 has an external input and output terminals 280, equipped with a bolt shape can be inserted. For example, the third example, as shown in Figure 13, the third outside of the current collecting plate 236, the terminal contact portion 237 has three connection grooves 238 and can be formed, the three connecting grooves (238) the external input and output terminals 280 may be fixed to the insertion.
[150]
Therefore, according to this configuration of the present invention, the third current collector plate 236 with the connection groove 238 can be electrically connected in contact with the external input and output terminals 280, which can shorten the time of the assembly process there is an advantage.
[151]
14 is a perspective view schematically showing a third aspect of the battery pack according to another embodiment of the present invention.
[152]
14, the battery pack 1001 is, at least two or more battery modules in alignment with a first end disposed in one direction (200, 201, 202, 203) and at least two or more battery modules of the first stage ( 200, 201, 202, 203) may include at least two or more different battery module (204, 205, 206, 207) of an aligned stacked second end in the direction to the top.
[153]
In this case, includes an insulating low electrical conductivity material between the at least two battery modules (200, 201, 202, 203) and the stacked at least two or more different battery module (204, 205, 206, 207) of the first end there is an insulating sheet 290, to be interposed. For example, the insulating material may be a plastic or rubber material.
[154]
Therefore, according to this configuration of the invention, the insulating plate 290, the battery module of the first stage (200, 201, 202, 203) and the other battery module of the second stage (204, 205, 206 , in that the electrical short circuit between the 207) can be prevented in advance.
[155]
15 is a perspective view schematically showing a still another form of a battery pack according to another embodiment of the present invention.
[156]
Referring to Figure 15, still another embodiment the battery pack 1002 according to the example, in comparison with the battery pack 1001 of 14, the battery module of the second stage (204, 205, 206, 207) the a first electrode terminal 111 is located below the second electrode terminal 112 are laminated on top of the tip over the top and bottom so as to be positioned on the top, the battery module of the first stage (200, 201, 202, 203) It can be.
[157]
Therefore, according to this configuration of the present invention, there is an advantage capable of reducing the additional manufacturing costs due to a design change, such as is possible, the new mold manufacture that constitute the battery pack 1000, the battery module in a variety of layered structures.
[158]
Referring back to Figure 13, the battery pack 1000 according to the present invention, in addition to such a battery module 200, a variety of apparatus for controlling charging and discharging of the battery module 200, such as a BMS (not shown, Battery Management the System), a current sensor, a fuse or the like can be further included.
[159]
In addition, the battery pack 1000 according to the present invention can be applied to vehicles, such as electric or hybrid vehicle. That is, the vehicle according to the present invention, it may include a battery pack 1000 according to the present invention.
[160]
Further, the battery pack 1000 according to the present invention can be applied to an energy storage system that can be used as an emergency electric power source. That is, the energy storage system according to the present invention, may include a battery pack 1000 according to the present invention.
[161]
On the other hand, but the top and bottom, the right and left, the terms indicating the directions such as before, after used herein, these terms may make vary depending on the location of the position and the observer of the targeted object for convenience of explanation, number that will be apparent to those skilled in the art.
[162]
[163]
As it described above, but it should be understood that the detailed description and specific examples, the invention is not limited thereto under the technical scope of the present invention by one of ordinary skill in the art various modifications and variations within the equivalent scope of the claims to be described is possible as a matter of course.
[164]
Reference Numerals
[165]
1000, 1001, 1002: battery pack 250: Bus Bar
[166]
200, 201, 203, 204, 205, 206, 207: battery module 251: unit plate
[167]
100: a cylindrical battery cell 256: terminal connection
[168]
111, 112: electrode terminals 260: Guide coupling structure
[169]
210: the module housing 261, 262: engaging projection
[170]
210A: upper case 266 and 267: a guide groove
[171]
210B: lower case 295: insulating plate
[172]
230: a first current collecting plate 297: support bar
[173]
240: second current collecting plate 299: fastening member
Industrial Applicability
[174]
The present invention relates to a battery pack including a battery module and a plurality of them. Further, it is available to the industry in connection with the energy storage system or the vehicle having a battery module and a battery pack of the present invention.

Claims
[Claim 1]
A plurality of cylindrical battery cells relates to at least two or more electrically connecting a scalable battery module, an electrode terminal formed on the respective top and bottom; Receiving with a plurality of hollow inserts to accommodate the plurality of cylindrical battery cell having an additional module housing; One surface is electrically connected to in contact with the electrode terminal of the cylindrical battery cell, at least two of the plurality of cylindrical battery cell, a bus bar; And at least a portion of the one surface is in contact with the other surface of the bus bar of the cylindrical battery cell and is electrically connected to, in contact with current collecting plate of at least some of the other of the other surface to a different one of the electrical and the cylindrical battery cells in the battery module with a, and the module housing is provided with an outer wall configured to define an interior space, an outer wall the outer surface of the module housing is provided with a coupling protrusion and a guide groove for guiding the placement of the other of the battery module, connected current collecting plate the battery module, characterized in that the guide coupling structure is formed.
[Claim 2]
The method of claim 1, wherein the engaging projection, and a projection extending from the outer surface of the outer wall structure, and the guide groove, is recessed inward from the outer surface of said outer wall so that the other one of the engaging projection of the battery module can be inserted the battery module, characterized in that formed.
[Claim 3]
The method of claim 2 wherein the module housing, the upper case having a first accommodating portion formed in the hollow structure to surround the upper outer surface of the cylindrical battery cells; And a lower case provided with the second receiving portion is locked with the upper case, formed of a hollow structure so as to surround the outer surface of the bottom of the cylindrical battery cells; Battery module comprising: a.
[Claim 4]
4. The method of claim 3 wherein the upper case, which extends projecting to one side from the outer surface of said outer wall, and comprising a fastening first protruding a through-hole formed so that the fastening bolt is inserted, the lower case is formed on the right and left direction, the right and left direction other battery module and projecting extension side to the other in the outer surface of said outer wall, and comprising a fastening second protruding a through-hole formed so that the fastening bolt is inserted, wherein said through-hole of the locking part 2 protrusion, so that the fastening bolt is subsequently inserted into the formed the battery module of claim 1, characterized in that the protruding coupling communicates with the through-hole portion of the upper case.
[Claim 5]
The method of claim 3, wherein the first housing part, a battery module comprising: a convex part protruding inwardly to hold the pressure of the cylindrical battery cells on the inner surface facing the cylindrical battery cell in the upper case.
[Claim 6]
The method of claim 5, wherein the first housing part, characterized in that provided at the top of a hollow section of the cut shape to a predetermined point in the lower direction portion, and has the convex portion is formed inner surface of the incision of the upper case battery module.
[Claim 7]
The method of claim 6, wherein the incision portion, wherein the first received and located in correspondence with each other and the cut-out portion of the other hollow portion, the cutting portion, the battery module, characterized in that spaced in the incision and a distance of the other hollow .
[Claim 8]
The method of claim 1, wherein the bus bar has a plate body extending in the direction of the cylindrical battery cells are arranged; And a terminal connecting portion projecting from one end of the main body plate extending in contact with the electrode terminal of the cylindrical battery cells; The battery module according to claim, including.
[Claim 9]
The method of claim 1, wherein the electrode terminal of the cylindrical battery cell, a second electrode terminal formed on the first electrode terminal and the bottom is formed at the top, and wherein the current collecting plate is mounted on the upper portion of the module housing the cylindrical battery a first current collecting plate is formed such that the first electrode terminal and electrically connected to the cells; And wherein the module is mounted on a lower portion of the housing battery module, characterized in that including a second current collecting plate is formed such that the second electrode terminal and electrically connected to the cylindrical battery cells.
[Claim 10]
The method of claim 9, wherein the first current collector plate, the first current collector is formed to be in contact with the upper surface of the bus bar is connected in contact with the first electrode terminal of the cylindrical battery cells; And is formed extending forward from one end of the first current collector, the contact receiving portion is of a downward step are formed; Provided, and the second current collecting plate, the second current collector formed to be in contact with the lower face of the bus bar is connected in contact with the second electrode terminal of the cylindrical battery cell; The part 2 vertically extending from one end of the current collector part is perpendicularly bent upward extension; And a contact connection part is secured to the contact receiving part of the first current collecting plate is formed to extend rearward from the bent upper end of the vertically extending portion would be electrically connected to the first current collecting plate; The battery module according to claim, including.
[Claim 11]
11. The method of claim 10, wherein if the contact receiving portion has a projection projecting in the lower direction by at least one is formed, the contact connection part is characterized in that a groove of a shape corresponding to a protrusion receiving the contact portion is at least one formed The battery module.
[Claim 12]
The method of claim 10 wherein the vertically extending portion, the engaging projection and the battery module, characterized in that the guide through-hole formed at a position corresponding to the groove and the coupling protrusion of the coupling guide structure so that the through.
[Claim 13]
Arranged in one direction the battery pack of the battery module according to any one of the preceding claims characterized in that it comprises at least two.
[Claim 14]
Car characterized in that it comprises a battery pack according to claim 13.
[Claim 15]
A plurality of cylindrical battery cells relates to at least two or more electrically connecting a scalable battery module, an electrode terminal formed on the respective top and bottom; Receiving with a plurality of hollow inserts to accommodate the plurality of cylindrical battery cell having an additional module housing; One surface is electrically connected to in contact with the electrode terminal of the cylindrical battery cell, at least two of the plurality of cylindrical battery cell, a bus bar; At least a portion of the one surface is in contact with the other surface of the bus bar is coupled to the cylindrical battery cells electrically, at least a portion of the other surface is in contact with the other one of the current collecting plate electrically connected to the cylindrical battery cell in the other one of the battery modules a current collector plate; An insulating plate formed so as to be located in contact with one side of the outer surface of the outer wall of the module housing; A is inserted into the inside of the insulating plate, projecting from the outer periphery of the insulation plate in the vertical direction support bar; And fastening members configured to engage the current collector plate with the support bar; And wherein the module housing is provided with an outer wall configured to define an interior space, an outer wall the outer surface of the module housing has a guide engaging structure engaging projections and guide grooves are provided for guiding the placement of the other of the battery module to the the battery module, characterized in that formed.
[Claim 16]
The method of claim 15, wherein the module has a side outer surface of the outer wall of the housing, the recess in the inner direction of the recessed grooves extend in the vertical direction is formed, and the recessed groove, a battery module, characterized in that said supporting bar is inserted into storage.