1]The present invention relates to a battery pack that contains the electrode terminal connecting plate.
BACKGROUND
[2]Recently, the prices of energy resources due to the depletion of fossil fuels, are amplified interest in environmental pollution, the demand for eco-friendly alternative sources of energy has become an indispensable factor for the future life.
[3]
In nuclear power, solar power, and is continuing research for a variety of power generation technologies, such as wind power, tidal power, the power storage device to use the thus producing energy in a more efficient and also it leads a great interest.
[4]
In particular, the demand for batteries as an energy source has rapidly increased with the development of technology and demand for mobile devices increases, many studies have been made on batteries that can meet a variety of needs accordingly.
[5]
Typically, the shaped surface of the battery is high, the demand for prismatic secondary batteries or pouch type secondary battery which can be applied to products such as a mobile phone, a small thickness, the material surface in with the advantages of high energy density, discharge voltage, output stability the high demand for lithium secondary batteries such as lithium ion batteries, lithium ion polymer batteries.
[6]
Further, the secondary battery has a positive electrode, a negative electrode, and a bar, typically to be classified, depending on whether the membrane is made up of any structure, the electrode assembly of the stacked structure which is interposed between the positive electrode and the negative electrode is, of the long sheet-like positive and negative electrodes of the structure winding in a separator is interposed state jelly-roll type (wound type) electrode assembly, a stacked sequentially stacking a plurality of positive and negative one cut out in units of a predetermined size in a state of sandwiching the membrane-type (stack-type) electrode assembly and the like.
[7]
Recently, the jelly-to address the roll-type electrode assembly and a stacked-type electrode problem assembly having the jelly-as an electrode assembly of a step forward structure is mixed in the form of rolled and stacked, the separator of the positive electrode and the negative electrode of a given unit of the stacking / folding type electrode assembly of a sequential take-up position in which the unit cell stacked in a sandwiched condition on the separation film condition structures have been developed.
[8]
Further, secondary batteries according to the shape of the battery case, the electrode assembly is a cylindrical battery and a prismatic battery that is embedded in a metallic can of cylindrical shape or square shape, the electrode assembly is an aluminum laminate sheet pouch case pouch-shaped battery that is embedded in the type of It is classified.
[9]
The secondary battery may also be used in, the form of a single battery pack, a battery electrically connected to them, and also, or multiple unit cells in the form of depending on the type of external device, it is used.
[10]
For example, small devices such as mobile phones, the battery 1 to the output and capacity while the operation is possible for a predetermined time, a laptop computer, in the case of such a small PC, the parallel and series a plurality of cylindrical batteries in the problem of output and capacity the use of a battery pack connected to the system is required.
[11]
Generally, the cylindrical battery, it is preferable than the prismatic batteries or polymer in the capacity and the output side.
[12]
Figure 1 shows a vertical cross-sectional view showing the structure of a conventional cylindrical battery cell is shown schematically.
[13]
1, the cylindrical battery cell 100 is then stored, and an electrolyte solution is injected into the cell case 130, an electrode assembly 120 of the take-up-type structure in a cylindrical cell casing 130, a cell case (130 ) by coupling to clamp the cap assembly 140 to the open top of, and production.
[14]
The cap assembly 140 is formed self opposite ends in the center portion 141, the top, and the remaining portion of the cylindrical battery cell 100 other than the central portion 141 of the top cap assembly 140 to form a negative electrode terminal.
[15]
The electrode assembly 120 is stacked the positive electrode 121 and negative electrode 122, and separator 123, and then produced by winding a round form.
[16]
Issues core 150 of the through-hole formed in the center portion of the electrode assembly 120 has a center pin 160 of the cylinder are inserted.
[17]
Center pin 160 is generally made of metal material to impart the desired strength, it is made of a cylindrical structure of a bent hollow round the plate.
[18]
The center pin 160 acts as a passage for discharging the gas which is fixed and the support caused by the action and the charge and discharge operation, and when the reaction of the electrode assembly 120.
[19]
Generally, a notebook computer, a pocket PC battery pack used in a number of cylindrical batteries protect the battery cell arrangement, consisting of a connection of a parallel or serial fashion circuit module (Protection Circuit Module: PCM) to connect to a pack case to case members It consists of a structure mounted on the interior.
[20]
In this case, the battery cell arrangement are connecting member consisting of a metal plate are bonded by welding to the electrode terminals of the respective battery cell thereby, and is electrically connected to one another.
[21]
Here, the connection member may minimize interference between each other, and to prevent the problems of internal short circuit due to this, it is welded to the upper and lower ends which are opposed to each other of the cylindrical battery cells are coupled in accordance with the polarity.
[22]
However, in such a structure as the connecting member are located in both the top and bottom facing each other of the cylindrical battery cell, in the combination and arrangement process of some of the elements of the battery pack, the components are the top to the bottom of the cylindrical battery cell sites the structural limitations, such as not being installed will occur.
[23]
Further, the welding process for connecting the cylindrical battery cells in such a structure, first, performs welding of the connection member on one of the portions either to the top or the bottom of the cap assembly of the battery cell location.
[24]
After the welding on the portion of the completed one, turn over of the battery cells, because the welding of the connecting member relative to the remainder is to be performed, this welding process has a problem of increase in time and costs considerably cumbersome.
[25]
On the other hand, as shown in the upper portion of the cap assembly of the cylindrical battery cells are located, in the same region, can be considered a structure in which the connecting members are coupled to the positive terminal and a negative terminal.
[26]
However, while he said cathode terminal is formed at the top center portion of the cap assembly having a relatively large area, the negative electrode terminal is formed on the top surface clamping part having a relatively small area from the remaining area other than the upper central portion of the cap assembly do.
[27]
Accordingly, the welding of the connecting member relative to the clamping portion top surface when configuring the connection member in a thin thickness in order to improve the relatively cumbersome, this welding, the negative electrode of the cylindrical battery cells as the connecting members increase in resistance this heat may result in the process of current conduction between the terminals, and which may serve as a factor to lower the safety of the battery pack.
[28]
That is, the connection member coupled to the top clamping portion side of the cylindrical battery cell is to be formed at the same time as easy to weld to the upper surface the clamping portion, the current flow between the negative electrode terminal made of smooth structure.
[29]
Thus, the higher the need for in possible to solve this technical problem situation.
[30]
Detailed Description of the Invention
SUMMARY
[31]
An object of the present invention is to solve the technical problem, which has been requested from the problems, and of the prior art.
[32]
The inventors of the application have at the end of extensive research and various experiments in depth, constitutes a first electrode terminal connecting plate joined to the upper end surface clamping part of the battery cells at different welding plate and the conductive plate has a thickness as will be described later do.
[33]
Accordingly, a first welding of the electrode terminal connecting plate to, the top surface portion clamped via the welding plate at the same time that can be performed more easily, enabling a smooth power application between the first electrode terminals through the conductive plate, and safety the can be improved.
[34]
Further, by configured to engage both the first electrode terminal connecting plate and the second electrode terminal connecting plate for the upper end of the cap assembly, or other configurations that make up the battery pack on the bottom portion of the cylindrical battery cells that faces the top of the cap assembly it may be located elements may constitute a structure of a battery pack and more flexible.
[35]
Thus leading to the confirmed that due to the structure of the battery pack can be easily overcome the restrictions as to the various shapes of the mounting device, and completed the present invention.
[36]
Problem solving means
[37]
A cylindrical battery pack according to the present invention for achieving this object is achieved by the combination of the cap assembly into the open side of the cylindrical can a clamping portion formed, each first electrode terminal at the top center portion of the top surface and the cap assembly and the clamping portion and a plurality of cylindrical battery cells forming a second electrode terminal; And the cylindrical battery cell in a cylindrical cap assembly of the cells facing the same direction as the cells side arrangement, a first electrode terminal connected at the same time coupled to the upper end face of the clamping unit cell plate; And it may include the first electrode terminal connecting plate is welded to the clamping portion upper face of the cap assembly, the welding plate made of a relatively thin thickness of a; And a conductive plate made of a relatively larger thickness than that of the weld plate and is bonded to the upper surface of the weld plate, to facilitate the energization between the first electrode terminal of the top surface of the clamping portion opposite to the cap assembly; It may be a structure including the.
[38]
Thus, the first welding electrode terminal connecting plate to, the top surface portion clamped by the welding plate and at the same time can be easily carried out than, enabling a smooth power application between the first electrode terminals through the conductive plate, and safety for a the top of the cap assembly can be improved, first by configured to engage both the electrode terminal connecting plate and the second electrode terminal connecting plate, the lower end portion of the cylindrical battery cells that faces the top of the cap assembly, battery it may be located the other components that make up the pack, be a more flexible structure, the configuration of the battery pack, and yiettara, restrictions on the variety of shapes of the mounting device can be easily solved.
[39]
In one specific example, the first electrode terminal connected to the plate, consisting of a plate-shaped structure, to be coupled to the upper end surface portion clamping the exception of the second electrode terminal of the cylindrical battery cells in the region corresponding to the second electrode terminal may be a through-hole is perforated structure.
[40]
Accordingly, the first electrode terminal connecting plate has the cylindrical battery cell, a second electrode terminal or, by passing through the through-hole, the connection to the second electrode terminal, and a combined second electrode terminal connected to the plate and do not contact to interfere with one another are , Thus, it is possible to prevent problems such as an internal short circuit that is caused by the contact to interference.
[41]
At this time, the through holes are perforated so that the respective mutually communicated with each other corresponding sites of the welding plate and the conductive plate, and;
[42]
A through-hole perforated in the welded plate may be a structure having a relatively small diameter as compared to the through-hole drilled in a conductive plate.
[43]
Thus, the inner periphery part through-hole of the weld plate may be formed of a structure that is exposed from above through the through-holes of the conductive plate, whereby the through hole of the weld plate of the clamping unit the top surface through the through hole welding within the surrounding area can be easily done more.
[44]
More specifically, the through-hole of the welding plate is, its inner periphery part in contact with the clamping portion upper face of the cap assembly and between said clamping parts of the upper inner and upper outer, relatively adjacent to each other in position in the clamping unit upper inner consisting of a size;
[45]
The through-holes of the conductive plate is a through hole within the peripheral region of the weld plate in contact with the clamping portion upper face of the cap assembly so as to be exposed from the top, between the through-hole inner periphery and a clamping portion upper outer periphery of the weld plate, upper end of the clamping portion It can be a structure made of a size which is located relatively adjacent to the outer periphery.
[46]
Therefore, it is possible to maximize the area of ​​the inner periphery part through-hole of the weld plate exposed from above through the through-hole inner periphery part the area of ​​the weld plate in contact with the clamping portion top surface and the through-holes of the conductive plate, and thus a through-hole weld of the inner periphery portion of the welded plate for the clamping portion top face at the same time can be easily carried out more, since the increase in the weld area, the welding strength of the first electrode terminal connecting plate for the clamping portion top surface increases, it is possible to further improve the structural stability.
[47]
Here, the size of the through hole inner peripheral portion of the weld plate exposed to the upper portion through the through hole of the conductive plate may be 10% to 90% of the size of the top surface portion of the cap assembly and clamping.
[48]
If, when the penetrating amount of the hole inner peripheral portion of the weld plate exposed to the upper portion through the through hole of the conductive plate is too small outside the above range, on the clamping portion upper face of the cap assembly, the through hole inner peripheral portion of the welding plate the not easy to weld.
[49]
On the other hand, if the through-the size of the hole inner peripheral portion of the weld plate exposed to the upper portion through the through hole of the conductive plate out of the range too large, the area of ​​the top surface facing the clamping part and the through hole inner peripheral portion of the welding plate is too narrow, on the clamping portion top surface of the cap assembly, it is not easy to weld the through hole of the welding plate inner portion, the second electrode is a through hole inner peripheral portion of the welding plate formed at the top center portion of the cap assembly by contact with the terminal, there is a problem that can result in an internal short circuit.
[50]
On the other hand, the thickness of the welded plate may be 0.1 millimeters to 0.5 millimeters.
[51]
If, when the thickness of the welded plate 0.1 mm is less than, by being in the welding process for a clamping portion top surface of the over-, thinner cap assembly and the thickness of the welding plate, the damage to the weld plate, may result in weld defects.
[52]
On the other hand, when the thickness of the welded plate exceeds 0.5 mm, becomes the thickness of the welded plate is too thick, and the welding of the clamping portion upper face of the cap assembly can not easily, and will not have sufficient welding done , there is a problem that the welding strength can be reduced in accordance with the.
[53]
The thickness of the conductive plate may be from 1 millimeters to 10 millimeters.
[54]
If, when the thickness of the conductive plate 1 millimeters less, depending on the load is too thin and the thickness of the conductive plate, and the resistance may increase, and thus, seamless energization between the first electrode terminals through said conductive plate this can be difficult.
[55]
On the other hand, when the thickness of the conductive plate exceeds 10 mm, the thickness of the conductive plate becomes unnecessarily thick, to increase the size of the battery pack or the battery pack for application to a limited mounting space of the device there is a problem that can degrade capacity.
[56]
In one specific example, the welding plate and the conductive plate may be made of each of copper, aluminum, nickel, copper alloy, aluminum alloy, and a different at least one metal selected from the group consisting of a nickel alloy.
[57]
More specifically, the weld plate is on the other hand to improve the weldability of the clamping portion upper face of the cap assembly, the conductive plate plays the role forming a seamless energization between the first electrode terminal.
[58]
That is, the welded plate and the conductive plate and the respective functions are different and, therefore, to be more excellent in performing the respective functions may be formed of different metals.
[59]
In particular, when considering the functions of the welding plate and the conductive plate, the weld plate weldability can be made at a relatively high nickel or nickel alloy, and the electrically conductive plate is a conductive relatively high copper, aluminum, a copper alloy, and it may be formed of at least one metal selected from the group consisting of an aluminum alloy.
[60]
In addition, the welding plate and the conductive plate may be a structure that is bonded to each other by laser welding.
[61]
Generally, the laser welding is a welding using a high energy laser beams and fine welding.
[62]
Therefore, for the remaining narrower region except the through-hole is drilled in the welding plate and the conductive plate, it is possible to provide an excellent welding quality with a fine welding, the failure rate that may occur in the welding process of the welding plate and the conductive plate eliminating or can be lowered.
[63]
On the other hand, the battery pack includes a first electrode terminal positioned on a top surface of the connection plate, the top of the cap, the cap assembly and the assembly so as to connect the second electrode terminal formed in the upper middle portion of opposing the cap assembly of the cylindrical battery cells in the middle region a second electrode terminal connecting plate is coupled at the same time; And an insulating member interposed between the first electrode terminal connecting plate and the second electrode terminal connecting plate, the first electrode terminal connecting plate and the second electrode terminal to insulate the contact plate; The structure may be further contained.
[64]
In other words, the battery pack, the battery pack on the bottom portion of the cylindrical battery cells that faces the top of the cap assembly by a second electrode terminal connecting plate which is connected at the top of the same cap assembly with a first electrode terminal connected to the plate It can position the other components that make up and, thus, it is possible to more flexibly configure the structure of the battery pack, the restrictions as to the variety of the shape of the mounting device can be easily solved.
[65]
In such a case, the second electrode terminal connecting plate has a connecting portion corresponding to a second electrode terminal formed in the upper central portion of the cap assembly can be a structure that is downwardly protruded such that, combined face to face, the second electrode terminal .
[66]
Thus, the connection portion of the second electrode terminal connecting plate corresponding to a second electrode terminal formed in the upper central portion of the cap assembly to protrude downward through the through-hole drilled in the first electrode terminal connecting plate, the top of the cap assembly and the central It can be combined to more easily face the second electrode terminal formed in the part.
[67]
In this case, the second electrode terminal connecting plate, the size of the connection part corresponding to a second electrode terminal formed in the upper central portion of the cap assembly in a horizontal cross section, the through hole inner circumferential perforation in the welding plate of a first electrode terminal connected to the plate for the size of the region, it may be 50% to 90%.
[68]
If, when the size of the connection portion of the second electrode terminal connecting plate corresponding to a second electrode terminal formed in the upper central portion of the cap assembly and out of the range, too small, a stable welding strength to the second electrode terminal a may be compromised, whereby the structural stability of the battery pack may be reduced accordingly.
[69]
On the other hand, the second connection portion size of the second electrode terminal connecting plate corresponding to the electrode terminals beyond the foregoing range, when too large, the downward protrusion of the second electrode terminal is connected is formed in the top center portion of the cap assembly by connecting the parts of the plate in direct contact with the inner periphery part through-hole of the first electrode terminal connected to the plate, there is a problem that can result in an internal short circuit.
[70]
In one specific example, the insulating member may be a flat structure, an insulating sheet made of the same structure as the first electrode terminal connecting plate.
[71]
In other words, the insulating member is an insulating sheet, the planar structure of the first electrode terminal and consists of the same structure as that of the connection plate, and more particularly, the first, which is the through-hole is perforated in communication with the first through hole of the electrode terminal connecting plate the structure may be.
[72]
At this time, the through-hole, to prevent direct contact and internal short-circuit due to which the first electrode terminal connecting plate and the second electrode terminal connected to the plate through the through-hole, the first electrode terminal, which is drilled in the insulating member through-holes, in particular, can be made to a smaller size than the through hole of the conductive plate, and more specifically, the through-hole size that is drilled in the insulating member of the connecting plate, a second electrode formed on the upper central portion of the cap assembly in a range that does not interfere with the downward projection of the second connecting portion of the electrode terminal connecting plate so as to connect the terminals, to the through-hole size of the conductive plate may be a size of 90 to 99%.
[73]
Further, the insulating sheet may be a first electrode plate and the second terminal connected from both sides that face each of the electrode terminal connecting plate, a structure in which the adhesive material attached to the at least one surface.
[74]
Therefore, the insulating sheet is more than the first electrode terminal connecting plate and the second electrode terminal connection, and to suppress the flow between the plates, direct contact and thus the internal short-circuit in accordance with the electrode terminal connecting plate due to the flow of the insulating sheet It can be prevented effectively.
[75]
Since the rest configuration to the structure of the battery pack other than the above structure to the structure are known in the art, detailed description thereof in this specification will be omitted.
[76]
Effects of the Invention
[77]
As described above, the cylindrical battery pack according to the invention, and constitutes a first electrode terminal connecting plate joined to the upper end surface portion of the battery cells are clamped at a different welding plate and the conductive plate thickness.
[78]
Accordingly, a first welding of the electrode terminal connecting plate for the upper end surface portion clamped via the welding plate at the same time can be easily carried out than, enabling a smooth power application between the first electrode terminals through the conductive plate, the safety It can be improved.
[79]
In addition, the top cap assembly is configured to couple both the first electrode terminal connecting plate and the second electrode terminal connecting plate.
[80]
Such a structure may be may be located the other components constituting the battery pack in the lower part of the cylindrical battery cells that faces the top of the cap assembly, configuration, the structure of the battery pack is more flexible, and thus, the device there is an effect capable of easily eliminating the restrictions on the variety of the shape of the mounting portion.
[81]
Brief Description of the Drawings
[82]
1 is a vertical sectional view showing the structure of a conventional cylindrical battery cell, schematically;
[83]
Figure 2 is a schematic view schematically showing a structure of a battery pack according to an embodiment of the invention;
[84]
3 is a plan view schematically showing a structure coupled to the cap assembly of the cylindrical battery cell, the first electrode terminal connected to the plate of Figure 2;
[85]
Figure 4 is a vertical cross-sectional view schematically showing a structure of the battery pack of FIG.
[86]
Best Mode for Carrying Out the Invention
[87]
Or less, and more detail the present invention with reference to the drawings according to an embodiment of the present invention but is not the scope of the present invention is not limited by it.
[88]
Figure 2 shows a schematic view schematically showing a structure of a battery pack according to one embodiment of the invention.
[89]
2, the battery pack 200 is a cylindrical battery of claim 1, the electrode terminal connecting plate 210 at the top which is located a cap assembly 202 of the cell 201, a second electrode terminal connected to the plate 240 and the insulating the member 250 is formed by binding.
[90]
A first electrode terminal connecting plate 210 includes a conductive plate (230) joined to the upper surface of the cylindrical battery cell 201, the cap assembly 202, welding plate 220 and the welding plate 220 coupled to the top of the have.
[91]
In sites of each corresponding welding plate 220 and the conductive plate 230, the respective through-holes in the portion corresponding to a second electrode terminal formed in the upper middle portion of the cap assembly 202 of the cylindrical battery cell 201 (221, 231) are perforated.
[92]
Insulating element 250 is made up of a first electrode terminal connected to the through holes 221 and 231, which is sheet-shaped with a through-hole 251 of the same shape in the perforated region corresponding to the plate 210.
[93]
A second electrode terminal connected to the plate 240 is interposed between the insulating member 250 is coupled to the upper surface of the first electrode terminal connecting plate 210.
[94]
Figure 3 shows a plan view of the Figure a first electrode terminal connected to the second plate showing a structure coupled to the cap assembly of the cylindrical battery cells. Referring to FIG.
[95]
Referring to Figure 3, the second electrode terminal 213 formed on the upper central portion of the cap assembly 202 of the cylindrical battery cell 201 is formed, and in the remaining area other than the second electrode terminal 213, and clamping the upper portion surface 212 is formed with a first electrode terminal.
[96]
Claim the first welding plate 220 and the conductive plate 230 of the electrode terminal connecting plate 210 includes a second through-hole of a circular structure in communication with each other in the region corresponding to the electrode terminals 213, 221 and 231 are It is punctured.
[97]
Diameter (D1) of the inner peripheral portion of the through-hole 221 drilled in the welding plate 220 has a relatively small structure, in comparison to the diameter (D2) of the inner peripheral portion of the through-hole 231 drilled in a conductive plate 230 consist of.
[98]
Thus, the inner periphery portion of the through-hole 221 drilled in the welding plate 220 is simultaneously in contact with the clamping portion upper surface 212, are exposed from the upper portion through the through hole 231 of the conductive plate 230, Thus, the more the welding of the welding plates 220 for clamping the upper side portion 212 can be easily performed.
[99]
For one of the cylindrical battery cell 201, the welding of the welding plate 220 and the top clamping portion surface 212 are made in the mutually spaced locations 3 parts (261, 262, 263).
[100]
Figure 4 shows a vertical cross-sectional diagram schematically showing a structure of the battery pack of FIG.
[101]
4, the first, and facing the first electrode terminal connected to the welding plate 220 is a cylindrical battery cell, the clamping portion upper surface 212 to form a first electrode terminal of 201 of the plate 210, the through-hole ( 221) is formed into a size which is located adjacent the inner periphery of the inner periphery portion with a clamping portion upper surface 212. the
[102]
Conductive plate 230 of the first electrode terminal connecting plate 210 is bonded to the upper surface of the welding plate 220, adjacent the outer periphery of the through hole 231 is the top surface 212 is the inner periphery portion clamping portion It consists positioned size.
[103]
Thus, by being within the surrounding area of ​​the through hole 221 of the welding plate 220 through the through hole 231 of the conductive plate 230, and exposed from the top, against a clamping portion upper surface 212, the more easily It can perform welding.
[104]
Conductive plate 230 is made up of a relatively thick structure than the welding plate 220.
[105]
The insulating member 250 on the top surface of the conductive plate 230 and the second electrode terminals are interposed between the connection plate 240, made of a relatively smaller size than the through-hole 231 of the conductive plate 230 and it includes a through hole 251.
[106]
Thus, the connection between the second electrode terminal plate 240 and the first electrode terminal conductive plate 230 of the connection plate 210 can be stably insulated.
[107]
A second electrode terminal connected to the plate 240 is a cylindrical battery cell 201, second through holes 251 and the first electrode terminal connected to the connection portion 241. The insulating member 250 is coupled to the electrode terminal 213 of the are downwardly protruded through the through-hole of the plate 210, 221 and 231, it consists of a structure connected to the second electrode terminal 213 of the cylindrical battery cell 201.
[108]
Has been described with above with reference to the drawings according to an embodiment and embodiment of the invention, those skilled in the art that the present invention, that various and modifications of the accompanying claims within the scope of the invention It will be possible.

Claims

[Claim 1]Portions are combined to the cap assembly and clamping the open side of the cylindrical can forming, and a plurality of cylindrical battery cells forming the first electrode terminals and second electrode terminals, respectively in the upper central portion of the clamping top end surface and the cap assembly portion; And the cylindrical battery cell in a cylindrical cap assembly of the cells facing the same direction as the cells side arrangement, a first electrode terminal connected at the same time coupled to the upper end face of the clamping unit cell plate; And it may include the first electrode terminal connecting plate is welded to the clamping portion upper face of the cap assembly, the welding plate made of a relatively thin thickness of a; And a conductive plate made of a relatively larger thickness than that of the weld plate and is bonded to the upper surface of the weld plate, to facilitate the energization between the first electrode terminal of the top surface of the clamping portion opposite to the cap assembly; The battery pack comprising: a.
[Claim 2]
The method of claim 1, wherein the first electrode terminal connecting plate, consisting of a plate-shaped structure, to be coupled to the upper end surface portion clamping the exception of the second electrode terminal of the cylindrical battery cells in the region corresponding to the second electrode terminal a battery pack, characterized in that the through-hole is perforated.
[Claim 3]
3. The method of claim 2, wherein the through holes are perforated so that the respective mutually communicated with each other corresponding sites of the welding plate and the conductive plate, and; The through-hole drilled in the welding plate is a battery pack, characterized in that with a relatively small diameter as compared to the through-hole drilled in a conductive plate.
[Claim 4]
The method of claim 3, wherein the through hole of the welding plate, its inner periphery part relatively adjacent to each other in between the cap assembly and the clamping portion, in contact with the upper end face the top and the clamping parts of the upper inner periphery of the clamping part the upper inner consisting of a size which is positioned; The through-holes of the conductive plate is a through hole within the peripheral region of the weld plate in contact with the clamping portion upper face of the cap assembly so as to be exposed from the top, between the through-hole inner periphery and a clamping portion upper outer periphery of the weld plate, upper end of the clamping portion the battery pack according to claim consisting of a size which is located relatively adjacent to the outer periphery.
[Claim 5]
The method of claim 4, wherein the through-size of the hole inner peripheral portion of the weld plate exposed to the upper portion through the through hole of the conductive plate is a battery, characterized in that 10% to 90% of the size of the top surface clamping portion of the cap assembly pack.
[Claim 6]
The method of claim 1, wherein the battery pack, characterized in that the thickness of the welded plate is from 0.1 millimeters to 0.5 millimeters.
[Claim 7]
The method of claim 1, wherein the thickness of the conductive plate is a battery pack, characterized in that 1 millimeters to 10 millimeters.
[Claim 8]
The method of claim 1, wherein the welded plate and the conductive plate is made of a battery pack, characterized in that each of copper, aluminum, nickel, copper alloy, aluminum alloy, and a different at least one metal selected from the group consisting of a nickel alloy.
[Claim 9]
The method of claim 1, wherein the battery pack, characterized in that the welding plate and the conductive plate are coupled to each other by laser welding.
[Claim 10]
According to claim 1, so that the battery pack is located on the upper surface of the first electrode terminal connecting plate facing the cap assembly of the cylindrical battery cell, connecting the second electrode terminal formed in the upper central portion of the cap assembly, a second electrode terminal connected at the same time coupled to the upper central portion of the cap plate assembly; And an insulating member interposed between the first electrode terminal connecting plate and the second electrode terminal connecting plate, the first electrode terminal connecting plate and the second electrode terminal to insulate the contact plate; The battery pack to the, characterized in that it further comprises.
[Claim 11]
The method of claim 10, wherein the second electrode terminal connecting plate is characterized in that, the downward projecting the connecting portion corresponding to a second electrode terminal formed in the upper central portion of the cap assembly, so that the coupling face to face to the second electrode terminal battery pack as.
[Claim 12]
The method of claim 11, wherein the second electrode terminal connecting plate, the size of the connection part corresponding to a second electrode terminal formed in the upper central portion of the cap assembly in a horizontal cross section, the first puncturing the weld plate of the electrode terminal connecting plate about the size of the through hole inner peripheral portion, the battery pack, characterized in that 50% to 90%.
[Claim 13]
11. The method of claim 10, wherein the insulating member is a battery pack, characterized in that the planar structure is an insulating sheet made of the same structure as the first electrode terminal connecting plate.
[Claim 14]
14. The method of claim 13, wherein said insulating sheet includes a first electrode plate and the second terminal connected from both sides that face each of the electrode terminal connecting plate, the battery pack characterized in that the adhesive material is added on at least one side.