1]This application claims priority to an application for the Korea Patent Application No. 10-2017-0087940, filed on July 11th 2017, all the contents disclosed in the specification and drawings of that application is hereby incorporated by reference into this application.
[2]The present invention relates to a battery pack including the battery module, and this, and more particularly, to a battery pack including the battery module, and the fastening member with the heat radiation member can be fixed even if it is not provided with them.
BACKGROUND
[3]
Technology and the secondary battery demand as an energy source that has been rapidly increased as the demand increases, but the nickel-cadmium battery or a hydrogen ion battery is used as a conventional secondary battery, in recent years, the memory effect as compared to a secondary battery of nickel based on the mobile device there is free and the charge and discharge hardly occurs, self-discharge rate is very low widely used in the lithium secondary battery is a high energy density.
[4]
The lithium secondary battery mainly uses a lithium-based oxide and carbon materials as an anode active material and the negative active material. The lithium secondary battery is provided with such a positive electrode active material and the negative electrode active material are respectively coated with the positive electrode plate and the negative electrode plate with a separator disposed between the electrode assembly and the casing for sealing the housing with the electrode assembly and an electrolyte, that is, the battery case.
[5]
The lithium secondary battery has a positive electrode, a negative electrode and composed of a separator and an electrolyte interposed between them, the lithium secondary battery depending on which to use the positive electrode active material and the negative active material (Lithium Ion Battery, LIB), a lithium polymer battery (Polymer Lithium Ion Battery divided into, PLIB) and the like. Typically, the electrodes of these lithium secondary batteries is formed by after coating aluminum or copper sheet (sheet), mesh (mesh), the film (film), the foil (foil) to the positive or negative electrode active material of the current collector, such as drying.
[6]
The conventional battery module has a heat radiation member such as heat sink in contact with the battery cell is used to dissipate heat generated from the battery cells. However, after the storage battery cell in case the heat sink the fastening members such as bolts and nuts for fixing because the contact with the battery cell, a heat sink is required.
Detailed Description of the Invention
SUMMARY
[7]
Accordingly, the object of the present invention is, even if it is not provided with a bolt and a nut as the fastening members to provide a battery pack which includes a heat radiation member is in contact with the battery cells, which can be fixed to the battery module, and it.
[8]
Also, to the heat radiation member is provided a battery pack including the battery module, and it can be inserted correctly inside the case.
Problem solving means
[9]
According to an aspect of the invention, the plurality of battery cells stacked body which battery cells are stacked; The battery cell case laminated body is housed; And is inserted in the casing, a battery module including a heat radiation member which is supported in contact with the battery cell stack can be provided.
[10]
In addition, the case has an insertion hole is formed, the heat radiating member includes a base plate; And coupled to the base plate may comprise at least one protrusion is inserted into the insertion hole.
[11]
In addition, the base plate, is inserted into the case can be contacted at one side formed with the insertion hole of the case.
[12]
Further, one side of the base plate is in contact with the case, the other side of the base plate opposite to said one side may be in contact with the battery cell stack.
[13]
In addition, the projecting portion is provided at least two, and the first protrusion has the refrigerant is a refrigerant inlet is formed so as to be introduced into the base plate and the inlet flow path are connected, the second projection is so that the refrigerant can have be released from the base plate the coolant outlet is formed may be connected to the outlet passage.
[14]
Further, the projection may be inserted into the insertion hole to be coupled to the case by a hook type or snap-fit ​​manner.
[15]
In addition, the projecting portion is formed with at least one of a step, the step has a locking groove is formed, the casing may be formed with a hook which can be engaged in the engaging groove.
[16]
In addition, the case has at least one guide hole can be formed to at least one guide protrusion is formed, in the base plate, guides the insertion of the base plate along the guide protrusion.
[17]
According to another aspect of the present invention, there may be provided a battery pack including the battery module described above, also, there is a car including the battery module may be provided.
Effects of the Invention
[18]
Embodiments of the present invention, the heat radiation member is fixed in contact with the battery, so the cell supported by the stacked body and the protrusions may be coupled to a hook type or snap-fit ​​manner to the case, even if it is not provided with a fastening member such as bolts and nuts battery cells the effect can be.
[19]
In addition, since the heat radiating member is inserted along the guide projection formed on the case, there is an effect that can be inserted precisely inside the case.
Brief Description of the Drawings
[20]
1 is a schematic overall perspective view of a battery module according to an embodiment of the present invention.
[21]
2 is a perspective schematic separation of the battery module in accordance with one embodiment of the present invention.
[22]
3 is a view showing the inside of the case from the battery module according to an embodiment of the present invention.
[23]
4 is a cross-sectional view as viewed along the A-A 'of Figure 1;
Mode for the Invention
[24]
With reference to the accompanying drawings, it will be described in detail according to a preferred embodiment of the present invention. Herein and in the terms or words used in the claims is general and not be construed as limited to the dictionary meanings are not, the inventor can adequately define terms to describe his own invention in the best way on the basis of the principle that the interpreted based on the meanings and concepts corresponding to technical aspects of the present invention. Accordingly, the configuration shown in the examples and figures disclosed herein are in not intended to limit the scope of the present is merely a preferable 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.
[25]
Size of the particular portion to be combined with each component or components in the drawings are exaggerated, omitted for the purpose of convenience or clarity, or was schematically illustrated. Therefore, the size of elements does not utterly reflect an actual size. If a detailed description of known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention, such explanation will be omitted.
[26]
The term "coupled" or "connected" as used herein, is one member and the other members directly bonded, or a single member, as well as when directly connected or via a joint member indirectly coupled to another element or indirectly to also include the case that is connected.
[27]
Figure 1 is one embodiment of a schematic overall perspective view of a battery module according to an embodiment of the present invention, Figure 2 is a perspective view schematic separation of the battery module in accordance with one embodiment of the present invention, Figure 3 is the invention a view showing the inside of the case in accordance with the battery module, Figure 4 is a cross-sectional view as viewed along the a-a 'of Figure 1; In Figure 3 a part of the case is cut portion.
[28]
When Figures 1 to 4, the battery module 10 according to one embodiment of the present invention includes a battery cell stack 100, a case 200, a heat radiation member (300).
[29]
Battery cell stack 100 may be configured such that the plurality of battery cells 110 are laminated (see Fig. 4). Battery cells 110 may have a different structure, also, the plurality of battery cells 110 may be stacked in a number of ways. Battery cell 110 is a positive electrode plate-separator-unit are arranged in order of the negative electrode plate cells (Unit Cell) or bipolar plate - separator - negative electrode plate - separator - positive electrode plate-separator-cell a bi-cell (Bi-Cell) arranged in order of the negative electrode plate It may have a structure in which a plurality of lamination according to the capacity.
[30]
Battery cells 110 may include an electrode lead. Electrode leads are exposed to the outside has a conductive material may be used as a type of terminal being connected to an external device. Electrode lead may include a positive electrode lead and the negative electrode lead. To the positive electrode lead and negative electrode lead are equal to each other with respect to the longitudinal direction of the battery cell 110, the length and to the direction may be each arranged in the opposite direction, or the positive electrode lead and the negative electrode lead, the battery cell 110 in the direction It may be located. Electrode lead may be electrically coupled to bus bar.
[31]
Battery cell stack 100 may be provided with a plurality of cartridges for accommodating the battery cell 110 (not shown). Each cartridge (not shown) may be made by injection molding of plastic, it may be a stacked plurality of cartridge accommodating portion capable of accommodating the battery cell 110 is formed (not shown). A plurality of cartridges (not shown) are stacked cartridge assembly may be provided with a connector element, or terminal element. Connector elements, for example, battery cell 110 may provide the data for the voltage or temperature BMS (Battery Management System, not shown) may include various types of electrical connection part to the connection member for connection or the like that of have. Then, the terminal element comprises a positive terminal and the negative terminal as a main terminal coupled to the battery cell 110, the terminal element is provided with a terminal bolt can be connected to external devices electrically. On the other hand, the battery cells 110 may have various shapes.
[32]
Case 200 includes a battery cell stack 100 is accommodated (see Fig. 4). Case 200 protects the battery cell stack 100, or the battery cell said 110 surround the whole of the housed plurality cartridge The battery cell stack 100 from an external vibration or shock by or cartridge assembly .
[33]
Case 200 may be formed in a shape corresponding to the shape of the battery cell stack 100 or the cartridge assembly. For example, if the battery cell stack 100 or the cartridge assembly is provided with cube-shaped case 200 it can also be provided in a hexahedral shape so as to correspond to this. Case 200, for example, may be prepared by may be prepared and plastic Extrusions or by bending a plate of a metal. Then, the case 200 may be made of each of the plates may be manufactured as an integral or separate and combined. Case 200 may be formed through a portion (not shown) in the connector element or the terminal elements described above can be exposed to the outside. That is, the connector element or the terminal elements may be may be electrically connected to an external part through a predetermined member, such a portion is electrically connected through the case 200 from being hindered by the case 200 is formed.
[34]
The guide hole of the case 200 has, and the insertion hole 210, so that can be inserted into the protrusion 320 of the heat dissipation member 300 to be described later can be formed (see FIGS. 1 and 2), the heat radiation member 300 ( 311) can be a guide projection 230 is formed to be a guide (see Figs. 2 and 3).
[35]
The heat radiation member 300 may have a number of ways that can dissipate heat generated in a battery cell stack 100 can be applied, for example, the heat radiation member 300 may be provided in the heat sink. The heat radiation member 300 is inserted into the case 200, and is supported in contact with the battery cell stack 100. Conventional battery case of a module (not shown), the battery cells (not shown) to the case (not shown) is inserted into the heat-radiating member (not shown) to the lower arrangement of the battery cells (not shown) is in contact with the battery cells, the heat radiation member a bolt and nut used for fixing. However, a battery module 10 according to one embodiment of the present invention includes a battery cell stack in the heat radiation member 300 is inserted into first contact with the case 200 and the heat radiation member 300 contacts the case 200 state body 100 is inserted so in contact with the heat radiation member 300, the heat radiation member 300 is supported by the battery cell stack 100, and thus, the bolt and nut are not required for fixing the heat dissipating member 300 .
[36]
The heat radiation member 300 may include a base plate 310 and a projection 320. The Base plate 310 may have various shapes, in contact with the battery cell stack 100 to release the heat generated from the battery cells 110. To this end, the base plate 310 may be provided so that after the refrigerant outlet flows.
[37]
Base plate 310 is inserted into the case 200 may be contacted to a side formed with the insertion hole 210 of the case 200. Here, one side of the base plate 310 is in contact with the case 200, the other side of the base plate 310 opposite to the one side may be in contact with the battery cell stack 100 (see Fig. 4). That is, the base plate 310 may be in contact respectively with the inner surface and the battery cell stack 100 of the case is interposed between the inner surface and the battery cell stack 100 of 200, case 200, whereby by the base plate 310 may be supported by the battery cell stack 100. Case 200 may be coupled to the cover (not shown) for holding the battery cell stack 100.
[38]
Projection 320 may be provided with one or more, are coupled to the base plate 310 is inserted into the insertion hole 210 formed in the case 200. In other words, the protrusion 320 is inserted into the insertion hole 210 of the case 200, the base plate 310 is in contact with the inner surface of the case 200. Here, the protrusion 320 is at least one step (328) may be formed had a step 328, the engaging groove 329, locking groove of has protrusions 320 inserted into holes 210 of a formed case 200, a hook 220 that can be coupled to (329) can be formed. The shape of the hook 220 can vary. That is, the protrusions 320 may be coupled to the insertion hole 210 is inserted into the case 200 by a hook manner, or snap-fit ​​manner. However, there is a hook on the protrusions 320 may be formed to be a stopping groove formed in the case 200. As described above, the base plate 310 of the heat radiating member 300 is interposed between the case 200 and the battery cell stack 100, so supported by the battery cell stack 100, the heat radiation member 300 but it may need not be provided with a bolt and nut to secure. However, when the hook 220 to the casing 200 to increase the fixed amount of the heat radiation member 300 is formed in combination with a hook manner with the engaging groove 329 formed in the protrusion 320, a heat radiation member 300 has protrusion 320 is fixed is coupled to the hook system at the formed part is in a part in contact with the battery cell stack 100 supported by the battery cell stack 100 even though it is not provided with a bolt and nut effect which can be sufficiently fixed a. And,
[39]
On the other hand, the protrusion 320 may have the function of the outlet of the refrigerant flowing out of the inlet and the base plate 310 of the refrigerant flowing into the base plate 310. That is, the protrusion 320 may be hooked to the case 200 may support a base plate 310, or may be used as a flow channel of the refrigerant. If, if it has only the function of the protrusion 320 is simply supporting the base plate 310 by a hook coupling may be provided by one or more, and mubang be provided one is the number of projections 320, in this case, refrigerant is a base plate after flowing into the unit 310 to be discharged from the base plate 310. base plate 310 has an inlet and an outlet may be formed separately. However, if the protrusion 320 has a function of a flow channel of the refrigerant projection 320 it may be provided as two or more than two. That is, because of the coolant inlet port and the coolant outlet is required, at least one preferably having two projections 320 at least. However, being provided with a protrusion 320 to one, one protrusion 320 is the inlet or having a single function of the outlet, the projection (320) at the inlet or base plate 310 so as to correspond to the outlet of the projections 320 is non outlet or inlet are possible embodiment of the case is formed. If the protrusion 320 second individual, the first projection 321, the coolant is a coolant inlet port 322 formed so that it can be introduced into the base plate 310 is connected to the inlet flow path (not shown), the second projection ( 325), the coolant outlet 326 is formed so that the refrigerant is to be released from the base plate 310 may be connected to the outlet passage (not shown). In other words,
[40]
The heat radiation member 300 may be inserted into the case 200 in a direction different from the direction in which the insert to rotate or twist in the process of being inserted into the case 200. 2 and 3 in order to avoid this, the case 200 is formed with at least one guide protrusion 230, one or more guide holes 311 may be formed in the base plate 310. That is, the guide hole 311 formed in the base plate 310. The base plate 310 during the insertion of the guide projection so inserted along the (230), a base plate 310 formed on the case 200 without being twisted or rotated there is an effect that can be inserted in the correct orientation.
[41]
With reference to the drawings will be described operations and effects of the battery module 10 according to one embodiment of the invention.
[42]
Referring to Figure 1 to Figure 4, the case 200 may be formed with a projection 320 which projects from the insertion hole 210, the base plate 310 can have a heat radiation member 300 is to be formed. The heat radiation member 300 is inserted into the case 200 so disposed between the inner surface and the battery cell stack 100 of the case 200, the heat radiation member 300 may be supported by the battery cell stack 100 have. Then, the insertion hole 210 is formed with a hook 220, the protrusion 320 of the heat radiation member 300 of the case 200 is formed with a locking groove 329, the protrusion (320 of the heat radiating member 300 ) it may be coupled to the coupling hook to snap-fit ​​coupled to the case 200.
[43]
Since this heat-radiating member (300) by the same method that is supported by the battery cell stack 100, the projections 320 can be coupled to the hook system or a snap-fit ​​manner to the case 200, the bolts and nuts as fastening members even if it is not provided in contact with the battery cell 110 has to be fixed effects.
[44]
On the other hand, a battery pack (not shown) in accordance with one embodiment of the present invention may include one or more of the battery module 10 according to one embodiment of the present invention as described above. In addition, the battery pack (not shown), such a battery module 10 in addition to, various devices for controlling the charging and discharging of the case, a battery module 10 for receiving such a battery module 10, such as BMS, current the sensor, a fuse or the like can be further included.
[45]
Meanwhile, the vehicle (not shown) in accordance with one embodiment of the present invention may include a battery module (10) above or a battery pack (not shown), in the battery module 10. The battery pack (not shown) this may be included. Then, the battery module 10 according to one embodiment of the present invention, the motor vehicle (not shown), for example, be applied to certain of the vehicle (not shown) that is adapted to use electrical, such as an electric car or a hybrid car can.
[46]
The present invention in the above Although the detailed description and specific examples, the invention is not limited by this is described below with the teachings of the present invention by one of ordinary skill in the art available are various changes and modifications within the equivalent scope of the claims. FIG.
Industrial Applicability
[47]
The invention is applicable to industries related to, in particular, relates to a secondary battery, the battery pack including the battery module, and it.

Claims

[Claim 1]A plurality of battery cell stack the battery cells are stacked; The battery cell case laminated body is housed; And is inserted in the casing, the battery module including a heat radiation member which is supported in contact with the battery cell stack.
[Claim 2]
The method of claim 1, wherein the case has an insertion hole is formed, the heat radiating member includes a base plate; And coupled to the base plate battery module comprises at least one protrusion is inserted into the insertion hole.
[Claim 3]
The method of claim 2, wherein the base plate, the battery module, characterized in that inserted in the casing in contact with one side formed with the insertion hole of the case.
[Claim 4]
4. The method of claim 3, wherein one side of the base plate is in contact with the case, the other side of the base plate opposite to said one side of the battery module, characterized in that in contact with the battery cell stack.
[Claim 5]
4. The method of claim 3 wherein the projection is provided with two at least, the first projection, the coolant is a coolant inlet port is formed so as to be introduced into the base plate and the inlet flow path are connected, the second projection, the refrigerant from the base plate a refrigerant outlet are formed so as to be leak battery module characterized in that the outlet passage is connected.
[Claim 6]
The method of claim 2 wherein said projection is a battery module, characterized in that inserted in said insertion hole being coupled to said case as a hook type or snap-fit ​​manner.
[Claim 7]
The method of claim 6, wherein the protrusion is formed with at least one of a step, the step has a locking groove is formed, and the case has a battery module, it characterized in that the hook which can be engaged in the engaging groove formed.
[Claim 8]
The method of claim 1, wherein the case has at least one guide protrusion is formed, in the base plate, characterized in that the at least one guide hole along the guide projection to guide the insertion of the base plate is formed The battery module.
[Claim 9]
The first battery pack including a battery module according to any one of the preceding claims.
[Claim 10]
FAW including a battery module according to any one of the preceding claims.