Battery pack and copper bar fixing support

Abstract

The application provides a battery pack and a copper bar fixing support. The battery pack comprises a box body, a battery cell module arranged in the box body, and a copper bar fixing support. The battery cell module comprises a connecting copper bar and an output copper bar. The connecting copper bar is electrically connected to a plurality of battery cells of the battery cell module. The copper bar fixing support comprises a base for being mounted on the box body, and a main body arranged on the base and used for fixing the connecting copper bar and the output copper bar. At least one mounting piece penetrates through the base and is fixed on the box body. The connecting copper bar and the output copper bar are fixed on the main body, the main body is arranged on the base, and the mounting piece is fixedly connected with the box body after penetrating through the mounting hole of the base. The base can be fixed on the box body through the mounting piece instead of being fixed on the side plate through hot riveting, so that the technical problem of insufficient connection strength caused by hot riveting connection between the fixing support and the battery cell module is solved.

Description

Technical Field

[0001] This invention relates to the field of battery pack technology, and more specifically to a battery pack and a copper busbar fixing support. Background Technology

[0002] In related technologies, the connecting copper busbar and output copper busbar of the battery cell module are fixed to the side plate of the battery cell module by bolts. A certain torque requirement needs to be met when bolting the connecting copper busbar and output copper busbar.

[0003] The fixed support and the side plate are connected by hot riveting. However, hot riveting has low stability. Therefore, there is a risk that the hot riveting point will break before the torque required for bolt fastening is reached. In other words, in related technologies, the fixed support and the battery cell module are connected by hot riveting, which has the technical problem of insufficient connection strength. Summary of the Invention

[0004] The embodiments of the present invention provide a battery pack and copper busbar fixing bracket, which can improve the technical problem of insufficient connection strength when the fixing bracket and the cell module are connected by thermal riveting.

[0005] In a first aspect, embodiments of the present invention provide a battery pack, including a housing, a cell module disposed within the housing, and a copper busbar fixing support. The cell module includes a connecting copper busbar and an output copper busbar, the connecting copper busbar being electrically connected to a plurality of cells in the cell module. The copper busbar fixing support includes:

[0006] A base for mounting on the housing; and

[0007] The main body is mounted on the base and is used to fix the connecting copper busbar and the output copper busbar.

[0008] At least one of the mounting components passes through the base and is fixed to the housing.

[0009] In one embodiment, the battery pack further includes a fixing member disposed on the housing, the base having a mounting hole, the mounting member passing through the mounting hole and being fixed to the corresponding fixing member.

[0010] In one embodiment, the mounting element includes a bolt, and the fastener includes a rivet nut.

[0011] In one embodiment, the copper busbar fixing support further includes:

[0012] A foolproof component is provided, which protrudes from the base on the side away from the main body and is disposed between the side plate located on one side of the plurality of battery cells and the housing, so as to abut against the side of the housing facing the battery cell module.

[0013] In one embodiment, the base further includes:

[0014] At least two limiting grooves are provided on the side of the base near the box and correspond one-to-one with the at least two fixing members;

[0015] The opening of the limiting groove faces the fixing member so that the limiting groove can accommodate the corresponding fixing member, and the bottom of the limiting groove is connected to the corresponding mounting hole.

[0016] In one embodiment, the copper busbar fixing support further includes:

[0017] A locking accessory passes through the connecting copper busbar and the output copper busbar and is fixed to the main body.

[0018] In one embodiment, the copper busbar fixing support further includes:

[0019] A protective component is connected to the main body and covers the connecting copper busbar, the output copper busbar, and the lock accessory.

[0020] In one embodiment, the main body includes a base portion disposed on the base and a connecting portion disposed on the base portion. The protective member includes a protective portion and a snap-fit ​​portion connected to the protective portion. The protective portion covers the connecting copper busbar, the output copper busbar, and the lock accessory. The snap-fit ​​portion snaps into the corresponding snap-fit ​​hole of the connecting portion.

[0021] In one embodiment, a support member is provided in the mounting hole, and the mounting member passes through the support member to connect with the mounting hole. The strength of the support member is greater than the strength of the base.

[0022] Secondly, embodiments of the present invention provide a copper busbar fixing support for fixing the connecting copper busbar and the output copper busbar of a battery cell module disposed in a housing, wherein the connecting copper busbar is electrically connected to multiple battery cells of the battery cell module, and the copper busbar fixing support includes:

[0023] A base for mounting on the housing; and

[0024] The main body is mounted on the base and is used to fix the connecting copper busbar and the output copper busbar.

[0025] The base has at least two mounting holes on opposite sides of the main body, and at least two mounting members pass through the at least two mounting holes and are respectively fixed to at least two fixing members of the box body.

[0026] The beneficial effects of the embodiments of the present invention are as follows: In the embodiments of the present invention, by fixing the connecting copper busbar and the output copper busbar to the main body, setting the main body on the base, and fixing the mounting part to the box after passing through the mounting hole of the base, the base can be fixed to the box by the mounting part, instead of being fixed to the side plate by hot riveting. This solves the technical problem that the connection strength of the fixed support and the battery cell module is insufficient when hot riveting is used. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the connection structure between the fixed support and the battery cell module in related technologies;

[0029] Figure 2 This is a schematic diagram of the connection structure between the fixed support and the battery cell module in related technologies;

[0030] Figure 3 This is a structural schematic diagram of a fixed support in related technologies;

[0031] Figure 4 This is a schematic diagram of the connection structure between the copper busbar fixing support, the battery cell module, and the housing in one embodiment of the present invention;

[0032] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0033] Figure 6 yes Figure 5 Explosion diagram of the middle structure;

[0034] Figure 7 This is a schematic diagram of the structure of a copper busbar fixing support with a protective component in one embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the structure of the copper busbar fixing support without protective components in one embodiment of the present invention. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present invention and are not intended to limit the present invention. In the present invention, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0037] like Figure 1 , Figure 2 and Figure 3 As shown, in related technologies, a battery cell module is disposed within a housing. The battery cell module includes multiple battery cells (not shown), a first side plate 401, a second side plate (not shown), and two first end plates (not shown). The first side plate 401 and the second side plate are disposed between and opposite to the two first end plates, so that the first side plate 401, the second side plate, and the two first end plates form a receiving space. Multiple battery cells are disposed within the receiving space. The battery cell module also includes an output copper busbar (not shown) and a connecting copper busbar (not shown). The multiple battery cells are electrically connected to each other via the connecting copper busbar. The output copper busbar is electrically connected to the connecting copper busbar and is bolted to a fixed support 300 to serve as the positive or negative output terminal of the battery cell module. The fixed support 300 has two hot-riveting posts 301, and the first side plate 401 has two hot-riveting holes. The fixed support 300 is hot-riveted to the first side plate 401 via the two hot-riveting posts 301 and the two hot-riveting holes. When the bolts are fastened, a certain torque requirement needs to be met. However, the stability of hot riveting connections is relatively low. Therefore, there is a risk that the hot riveting point will break before the required bolt fastening torque is reached. In other words, in related technologies, the hot riveting connection between the fixed support 300 and the battery module has a technical problem of insufficient connection strength.

[0038] The embodiments of the present invention provide a copper busbar fixing support, which can improve the technical problem that the connection strength is insufficient when the fixing support and the battery cell module 200 are connected by hot riveting.

[0039] like Figure 4 , Figure 5As shown, an embodiment of the present invention provides a copper busbar fixing support. The copper busbar support is used to fix the connecting copper busbar 202 and the output copper busbar 201 of the battery cell module 200. The battery cell module 200 includes multiple battery cells. The connecting copper busbar 202 is electrically connected to the multiple battery cells of the battery cell module 200, so that the multiple battery cells are connected in parallel and / or in series. The battery cell module 200 is disposed within a housing 100, and the housing 100 includes a first sidewall 101.

[0040] like Figure 6 , Figure 7 As shown, the copper busbar fixing support includes a base 1 and a main body 2. The base 1 is used to install on the housing 100 so that the copper busbar fixing support is installed on the first side wall 101 of the housing 100. The base 1 is provided with a mounting hole 11, and a mounting member 4 passes through the mounting hole 11 and is fixedly connected to the fixing member 102 provided on the first side wall 101.

[0041] The connecting copper busbar 202 and the output copper busbar 201 are fixed on the main body 2, and the connecting copper busbar 202 and the output copper busbar 201 are electrically connected.

[0042] In this embodiment, by fixing the connecting copper busbar 202 and the output copper busbar 201 to the main body 2, fixing the main body 2 to the base 1, and fixing the mounting part 4 through the mounting hole 11 of the base 1 to the fixing part 102 of the housing 100, the base 1 can be fixed to the housing 100 by the mounting part 4 and the fixing part 102, instead of being fixed to the side plate by hot riveting. This solves the technical problem that the connection strength of the fixed support and the battery cell module 200 is insufficient when hot riveting is used.

[0043] In one embodiment, the base 1 has at least two mounting holes 11, and the main body 2 is disposed on the base 1 and located between the at least two mounting holes 11. At least two mounting members 4 pass through the at least two mounting holes 11 and are fixedly connected to the fixing members 102 disposed on the first sidewall 101. By providing two mounting holes 11 and placing the main body 2 between the two mounting holes 11, the two mounting members 4, after passing through the at least two mounting holes 11 and being fixedly connected to the two fixing members 102, can limit the movement of both sides of the main body 2, preventing rotational displacement of the main body 2.

[0044] In one embodiment, the copper busbar fixing support includes a base 1 and a main body 2. The base 1 is mounted on the housing 100 and has at least two mounting holes 11. At least two mounting members 4 pass through the at least two mounting holes 11 and are fixedly connected to the fixing members 102 of the housing 100. The main body 2 is disposed on the base 1 and located between the at least two mounting holes 11. The connecting copper busbar 202 and the output copper busbar 201 are fixed to the main body 2, and the connecting copper busbar 202 and the output copper busbar 201 are electrically connected.

[0045] In this embodiment, the mounting component 4 includes bolts, and the fixing component 102 includes rivet nuts. The housing 100 has two through holes, each corresponding to one of the two mounting holes 11. The rivet nuts are disposed within the two through holes. The two bolts pass through the two mounting holes 11 and are then fixedly connected to the two rivet nuts. It can be understood that by creating the through holes in the housing 100 and placing the rivet nuts within them to fix the base 1 and the housing 100 together with the bolts and rivet nuts, threaded holes are not required on the housing 100, thus significantly reducing the thickness requirement of the housing 100.

[0046] In some embodiments, the fastener 102 includes a threaded hole on the housing 100, and the mounting member 4 passes through the mounting hole 11 and is threadedly connected to the threaded hole.

[0047] In one embodiment, the battery cell module 200 includes a third side plate 203, a fourth side plate (not shown), and two second end plates 204. The third side plate 203 and the fourth side plate are disposed between the two second end plates 204 and are disposed opposite to each other, so that the third side plate 203, the fourth side plate, and the two second end plates 204 form a receiving space.

[0048] like Figure 8 As shown, the copper busbar fixing support also includes a foolproof component 12. The foolproof component 12 protrudes from the side of the base 1 away from the main body 2. Specifically, the foolproof component 12 is disposed on the side of the base 1 close to the housing 100, and the foolproof component 12 is used to be disposed between the third side plate 203 and the housing 100 to abut against the side wall of the housing 100 facing the cell module 200.

[0049] In this embodiment, by setting the anti-foolproof component 12 on the side of the base 1 away from the main body 2 and between the third side plate 203 and the housing 100, so as to abut against the side wall of the housing 100 facing the battery cell module 200, the copper busbar fixing support can be installed more conveniently.

[0050] In some embodiments, the anti-mistake component 12 is integrally formed with the base 1. If the anti-mistake component 12 is part of the base 1, a portion of the base 1 extends along the direction of the base 1 toward the housing 100, such that a portion of the base 1 is located between the housing 100 and the side panel and abuts against the housing 100.

[0051] In some embodiments, the anti-fouling component 12 is integrally injection molded with the base 1.

[0052] In one embodiment, the base further includes two limiting grooves 13. The two limiting grooves 13 are located on the side of the base 1 near the housing 100 and correspond one-to-one with the two fixing members 102. The opening of the limiting groove 13 faces the fixing member 102 so that the limiting groove 13 accommodates the corresponding fixing member 102, and the bottom of the limiting groove 13 communicates with the corresponding mounting hole 11. That is, the mounting member 4 can be fixedly connected to the fixing member 102 after passing through the mounting hole 11 and the limiting groove 13. It can be understood that the two limiting grooves respectively limit the two fixing members 102, so that when installing the base 1, it is only necessary to align and install the two limiting grooves 13 with the two fixing members 102 to complete the positioning of the base 1, preventing misalignment of the base 1 and the time-consuming positioning process.

[0053] In one embodiment, the copper busbar fixing support further includes a locking accessory 5, which passes through the connecting copper busbar 202 and the output copper busbar 201 and is fixed to the main body 2, so that the connecting copper busbar 202 and the output copper busbar 201 abut against each other, thereby realizing an electrical connection and fixing the connecting copper busbar 202 and the output copper busbar 201 to the main body 2.

[0054] In some embodiments, the main body 2 is provided with a connection hole 23, one end of the lock accessory 5 is installed in the connection hole 23, and the other end of the lock accessory 5 limits the connection copper busbar 202 and the output copper busbar 201 so that the connection copper busbar 202 and the output copper busbar 201 are connected and fixed to the main body 2.

[0055] In some embodiments, the locking accessory 5 is a bolt, the connecting hole 23 of the main body 2 is provided with threads, the shank of the bolt is threadedly connected to the connecting hole 23, and the head of the bolt limits the connecting copper busbar 202 and the output copper busbar 201, so that the connecting copper busbar 202 and the output copper busbar 201 abut against and are fixed on the main body 2.

[0056] In some embodiments, the lock accessory 5 may also be interference-fitted with the connection hole 23 so that the connection copper busbar 202 and the output copper busbar 201 are connected and fixed to the main body 2.

[0057] In some embodiments, a connector 25 is provided within the connecting hole 23, and the connector 25 is engaged within the connecting hole 23. To prevent damage to the main body 2 from the locking accessory 5, the strength of the connector 25 is greater than the strength of the main body 2. The locking accessory 5 is connected to the main body 2 via the connector 25. For example, the locking accessory 5 and the connector 25 may be threaded or interference-fitted. In some embodiments, the connector 25 is made of a metal material, such as steel.

[0058] In one embodiment, the copper busbar fixing support includes a protective member 3, which is connected to the main body 2 and covers the connecting copper busbar 202, the output copper busbar 201, and the lock accessory 5.

[0059] In some embodiments, the protective member 3 includes a protective portion 31 and two latching portions 32 connected to both sides of the protective portion 31. The main body 2 includes a base portion 21 disposed on the base 1 and two connecting portions 22 disposed on the base portion 21. The protective portion 31 covers the connecting copper busbar 202, the output copper busbar 201, and the lock accessory 5, and each latching portion 32 is engaged in the corresponding latching hole 24 of the connecting portion 22. In this embodiment, the two latching portions 32 are U-shaped, with the first end of the U-shape fixedly connected to the protective portion 31 and the second end of the U-shape abutting against the latching hole 24. When the latching portion 32 is engaged in the latching hole 24, the second end abuts against the latching hole 24 to fix the protective portion 31 in the latching hole 24. It can be understood that in some embodiments, only one latching portion 32 and one corresponding latching hole 24 may be provided.

[0060] In some embodiments, the two latching parts 32 are bolts, and the two connecting parts 22 are two threaded holes opened on the main body 2. The protective member 3 is threadedly connected to the two connecting parts 22 through the two latching parts 32.

[0061] In one embodiment, a support member 14 is provided within the mounting hole 11, and the mounting member 4 passes through the support member 14 to connect with the mounting hole 11. The strength of the support member 14 is greater than the strength of the base 1. The support member 14 is engaged with the mounting hole 11. It is understood that because the strength of the support member 14 is greater than the strength of the base 1, when the mounting member 4 is connected to the fixing member 102, the support member 14 can provide support force to prevent damage to the base 1.

[0062] In some embodiments, the support member 14 is integrally formed with the base 1. For example, the support member 14 is pre-set in the injection mold of the base 1, and then the base 1 is injection molded.

[0063] In some embodiments, the support member 14 is made of a metallic material, such as steel.

[0064] like Figures 1 to 8 As shown, in one embodiment, the present invention also provides a battery pack. The battery pack includes a housing 100, a plurality of battery cell modules 200, and a copper busbar fixing support as described in any of the above embodiments. The plurality of battery cell modules 200 are fixedly disposed within the housing 100. Each battery cell module 200 includes a connecting copper busbar 202, an output copper busbar 201, and a plurality of battery cells (not shown). The connecting copper busbar 202 is used to electrically connect the plurality of battery cells, and the output copper busbar 201 is electrically connected to the connecting copper busbar 202 to serve as the output terminal of the battery cell module 200.

[0065] The copper busbar fixing bracket is used to fix the connecting copper busbar 202 and the output copper busbar 201 of the battery cell module 200. The copper busbar fixing bracket includes a base 1 and a main body 2. The base 1 is used to install on the housing 100 so that the copper busbar fixing bracket is installed on the housing 100.

[0066] In some embodiments, the housing 100 is provided with at least two fixing members 102, the base 1 is provided with at least two mounting holes 11, and at least two mounting members 4 pass through at least two mounting holes 11 and are fixedly connected to at least two fixing members 102 respectively.

[0067] The main body 2 is disposed on the base 1 and located between at least two mounting holes 11. The connecting copper busbar 202 and the output copper busbar 201 are fixed to the main body 2, and the connecting copper busbar 202 and the output copper busbar 201 are electrically connected.

[0068] In this embodiment, by fixing the connecting copper busbar 202 and the output copper busbar 201 to the main body 2, fixing the main body 2 to the base 1, and fixing the base 1 to the box 100 by passing at least two mounting parts 4 through the mounting holes 11 of the base 1, the base 1 can be fixed to the box 100 by the mounting parts 4 and the fixing parts 102, instead of being fixed to the side plate by hot riveting. This solves the technical problem that the connection strength of the fixed support and the battery cell module 200 is insufficient when hot riveting is used.

[0069] The embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A battery pack, comprising a housing, a cell module disposed within the housing, and a copper busbar fixing bracket, wherein the cell module includes a connecting copper busbar and an output copper busbar, the connecting copper busbar being electrically connected to a plurality of cells of the cell module, characterized in that, The copper busbar fixing support includes: A base is mounted on the housing, the housing including a first side wall, and the copper busbar fixing bracket is mounted on the first side wall; and The main body is mounted on the base and fixes the connecting copper busbar and the output copper busbar. At least one of the mounting components passes through the base and is fixed to the first side wall of the housing; The fastener is provided on the top surface of the first side wall, the base is provided with a mounting hole, the mounting member passes through the mounting hole and is fixed to the corresponding fastener, the mounting member includes a bolt, and the fastener includes a rivet nut; The anti-mistake component protrudes from the base on the side away from the main body and is disposed between the side plate and the housing on one side of the multiple battery cells, so as to abut against the side of the housing facing the battery cell module. The anti-mistake component is integrally formed with the base.

2. The battery pack according to claim 1, characterized in that, The mounting component includes bolts, and the fastener includes rivet nuts.

3. The battery pack according to claim 1, characterized in that, The base also includes: At least two limiting grooves are provided on the side of the base near the box and correspond one-to-one with the at least two fixing members; The opening of the limiting groove faces the fixing member so that the limiting groove can accommodate the corresponding fixing member, and the bottom of the limiting groove is connected to the corresponding mounting hole.

4. The battery pack according to any one of claims 1 to 3, characterized in that, The copper busbar fixing support also includes: A locking accessory passes through the connecting copper busbar and the output copper busbar and is fixed to the main body.

5. The battery pack according to claim 4, characterized in that, The copper busbar fixing support also includes: A protective component is connected to the main body and covers the connecting copper busbar, the output copper busbar, and the lock accessory.

6. The battery pack according to claim 5, characterized in that, The main body includes a base portion disposed on the base and a connecting portion disposed on the base portion. The protective component includes a protective portion and a snap-fit ​​portion connected to the protective portion. The protective portion covers the connecting copper busbar, the output copper busbar, and the lock accessory. The snap-fit ​​portion snaps into the corresponding snap-fit ​​hole of the connecting portion.

7. The battery pack according to claim 4, characterized in that, A support member is provided inside the mounting hole, and the mounting member passes through the support member to connect with the mounting hole. The strength of the support member is greater than the strength of the base.

8. A copper busbar fixing support for fixing the connecting copper busbar and the output copper busbar of a battery cell module disposed in a housing, wherein the connecting copper busbar is electrically connected to multiple battery cells of the battery cell module, characterized in that, The copper busbar fixing support includes: A base for mounting on the enclosure, the enclosure including a first side wall, and the copper busbar fixing bracket mounted on the first side wall; and The main body is mounted on the base and is used to fix the connecting copper busbar and the output copper busbar; The base is provided with at least two mounting holes on opposite sides of the main body, and at least two mounting members pass through the at least two mounting holes and are respectively fixed to at least two fixing members on the first side wall of the box. The fastener is provided on the top surface of the first side wall, and the base is provided with a mounting hole. The mounting member passes through the mounting hole and is fixed to the corresponding fastener. A foolproof component protrudes from the base on the side away from the main body and is disposed between the side plate and the housing on one side of the plurality of battery cells to abut against the side of the housing facing the battery cell module.

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