Busbar support assembly and battery module having same

Abstract

The present application provides a busbar support assembly and a battery module having same. The busbar support assembly comprises: a busbar support and a plurality of busbars, wherein the plurality of busbars are arranged on the busbar support, a reinforcing flange is formed on at least one side of the busbar support in a width direction, and a mounting plate portion is provided on one end of the busbar support in a length direction; and a flexible circuit board comprising a circuit board body and a plug connector, wherein the circuit board body is arranged on the busbar support, and the plug connector is connected to the circuit board body and fixed on the mounting plate portion. In the busbar support assembly of the present application, by arranging the reinforcing flange, the supporting strength of the busbar support can be improved, and by fixing the plug connector on the mounting plate portion, the integration level of the busbar support assembly can be improved, so that the operation steps can be reduced during the assembly, and the assembly efficiency is improved.

Description

Busbar support assembly and battery module with same

[0001] Cross Reference to Related Applications

[0002] The present application claims priority to the Chinese patent application No. CN202420934289.3, filed on April 29, 2024, entitled "Busbar support assembly and battery module with same", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of batteries, in particular to a busbar support assembly and a battery module with the same. BACKGROUND

[0004] With the development of technology, the endurance mileage of batteries is getting larger and larger, and correspondingly, the size of the batteries is also getting larger and larger. The size of the busbar support assembly that matches the battery is also getting larger and larger. When the size of the busbar support assembly is large, the support strength of the busbar support assembly is prone to be insufficient.

[0005] SUMMARY

[0006] Therefore, the purpose of the present application is to provide a busbar support assembly and a battery module with the same, which has higher support strength.

[0007] In a first aspect, the present application provides a busbar support assembly, comprising: a busbar support and a plurality of busbars, the plurality of busbars are arranged on the busbar support, the busbar support is formed with a reinforcing flange on at least one side in the width direction, and the busbar support is provided with a mounting plate portion at one end in the length direction; a flexible circuit board, comprising a circuit board body and a plug-in connector, the circuit board body is arranged on the busbar support, and the plug-in connector is connected with the circuit board body and fixed on the mounting plate portion.

[0008] Beneficial effects: by arranging the reinforcing flange, the support strength of the busbar support assembly can be improved, by fixing the plug-in connector on the mounting plate portion, the integration of the busbar support assembly can be improved, and the operation steps during assembly can be reduced, thereby improving the assembly efficiency.

[0009] In an optional embodiment, in the width direction of the busbar support, the busbar support comprises a first section, a second section and a third section connected in sequence, and the first section and the third section are arranged in the thickness direction of the busbar support.

[0010] In an alternative embodiment, the busbar support is formed with the reinforcing flange on both sides in the width direction, the two reinforcing flanges are respectively a first flange and a second flange, and the size of the first flange is greater than that of the second flange in the thickness direction of the busbar support.

[0011] In an alternative embodiment, the busbar support comprises a busbar section and an extension section, the busbar is arranged on the busbar section, the extension section is connected to one end of the busbar section in the length direction, and the mounting plate part is arranged on the side of the extension section away from the busbar section.

[0012] In an alternative embodiment, the busbar support further comprises a telescopic section, the telescopic section is connected to one end of the extension section away from the busbar section, the mounting plate part is connected to one end of the telescopic section away from the extension section, and the mounting plate part moves relative to the extension section to drive the telescopic section to deform.

[0013] In an alternative embodiment, the plug-in connector is riveted and / or adhesively connected to the mounting plate part.

[0014] In an alternative embodiment, the busbar support assembly further comprises an output pole seat, the output pole seat is arranged with a first plate part and a second plate part on both sides in the length direction of the busbar support, the first plate part is connected to the mounting plate part, and the plug-in connector is fixed to the second plate part.

[0015] In an alternative embodiment, the output pole seat further comprises a fixed part arranged between the first plate part and the second plate part, the fixed part is formed with a fixed hole for fixing an output pole busbar, and the output pole seat is further arranged with a first support plate and a second support plate arranged oppositely, the fixed part is arranged between the first support plate and the second support plate, the first support plate is formed with a support hole on the side facing the second support plate, the second support plate is formed with a clamping hole, and the busbar support assembly further comprises a protective cover arranged in a spaced manner with the fixed part and opposite to the fixed hole, the protective cover is arranged with a support protrusion and a clamping arm, the support protrusion is fitted into the support hole, and the clamping arm is fitted into the clamping hole.

[0016] In a second aspect, the application also provides a battery module, comprising: a plurality of battery cells, the plurality of battery cells being arranged in a first direction in a stack, at least one end of the battery cells in a second direction being provided with a pole; the busbar support assembly according to the first aspect of the application, the busbar support assembly being arranged at the end of the plurality of battery cells provided with the pole, the plurality of busbars being connected to the plurality of battery cells, the reinforcing flange being attached to the end surface of the battery cells in a third direction, the first direction, the second direction and the third direction being perpendicular to each other.

[0017] Beneficial effects: by arranging the busbar support assembly, the reliability in the working process can be improved.

[0018] In an optional embodiment, the battery module further comprises: a plurality of side beams surrounding a frame, the plurality of battery cells being arranged in the frame, one of the side beams being a first side beam, the first side beam being provided with a mounting gap, one end of the busbar support provided with the plug being arranged in the mounting gap, and the plug being lapped with the edge of the mounting gap on the side of the side beam away from the battery cells. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0020] FIG. 1 is a schematic view of a battery module according to an embodiment of the present application;

[0021] FIG. 2 is an enlarged view of A shown in FIG. 1;

[0022] FIG. 3 is a schematic view of a busbar support and a busbar according to an embodiment of the present application;

[0023] FIG. 4 is an exploded view of the busbar support and the busbar shown in FIG. 3;

[0024] FIG. 5 is a schematic view of a busbar support and a battery cell according to an embodiment of the present application;

[0025] FIG. 6 is a sectional view of the busbar support and the battery cell shown in FIG. 5;

[0026] FIG. 7 is a schematic view of a busbar support assembly according to an embodiment of the present application;

[0027] FIG. 8 is an exploded view of the busbar support assembly shown in FIG. 7;

[0028] Fig. 9 is a schematic view of a busbar support assembly according to another embodiment of the present application;

[0029] Fig. 10 is an exploded view of the busbar support assembly shown in Fig. 9;

[0030] Fig. 11 is an enlarged view of B shown in Fig. 10;

[0031] Fig. 12 is a schematic view of the output pole seat shown in Fig. 11 from another angle.

[0032] Reference signs in the drawings: 1000 - battery module; 100 - busbar support assembly; 10 - busbar support; 11 - reinforcing flange; 111 - first flange; 112 - second flange; 12 - mounting plate portion; 13 - first section; 14 - second section; 15 - third section; 16 - busbar section; 17 - extension section; 18 - telescopic section; 19 - pole post avoiding hole; 20 - busbar; 30 - flexible circuit board; 31 - circuit board body; 32 - plug-in piece; 40 - output pole seat; 41 - first plate portion; 411 - support hole; 42 - second plate portion; 43 - fixing portion; 431 - fixing hole; 44 - second support plate; 441 - clamping hole; 442 - window; 45 - protective cover; 451 - support protrusion; 452 - clamping arm; 453 - first folding edge; 454 - second folding edge; 455 - third folding edge; 46 - connecting portion; 47 - connecting hole; 200 - battery monomer; 210 - pole post; 300 - frame; 310 - edge beam; 320 - first edge beam. DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0034] The busbar support assembly 100 according to the first aspect of the present application will be described below with reference to Figs. 1-12.

[0035] As shown in Figs. 3-10, the busbar support assembly 100 according to the first aspect of the present application comprises: a busbar support 10, a plurality of busbars 20 and a flexible circuit board 30.

[0036] Specifically, the plurality of busbars 20 are arranged on the busbar support 10, the busbar support 10 is formed with a reinforcing flange 11 on at least one side in the width direction, the busbar support 10 is provided with a mounting plate portion 12 at one end in the length direction, the flexible circuit board 30 comprises a circuit board body 31 and a plug-in piece 32, the circuit board body 31 is arranged on the busbar support 10, and the plug-in piece 32 is connected with the circuit board body 31 and fixed on the mounting plate portion 12.

[0037] That is, the busbar support 10 can be formed with the reinforcing flange 11 on one side in the width direction, or the busbar support 10 can be formed with the reinforcing flanges 11 on both sides in the width direction.

[0038] It can be understood that when the busbar support 10 is too long, the torque generated by the force on the busbar support 10 will be larger, which can easily cause the busbar support 10 to break. In the embodiment, the reinforcing flange 11 is arranged on at least one side of the busbar support 10 in the width direction, which can increase the support strength of the busbar support 10 and reduce the probability of damage of the busbar support 10 during use.

[0039] The plug-in piece 32 is used to be connected with the battery management system. After the battery module 1000 is assembled, the plug-in piece 32 needs to be fixed, so as to avoid shaking of the plug-in piece 32 during use and failure of the connection between the plug-in piece 32 and the battery management system.

[0040] In the embodiment, the mounting plate portion 12 is arranged at one end of the busbar support 10, and the plug-in piece 32 can be fixed on the mounting plate portion 12. Therefore, during assembly, the plug-in piece 32 does not need to be additionally fixed by a support, which can improve the integration of the busbar support 10. During assembly, the mounting plate portion 12 can be assembled together with the busbar support 10 to the battery module 1000, so as to reduce the operation steps and improve the assembly efficiency.

[0041] According to the busbar support assembly 100 of the first aspect of the application, the reinforcing flange 11 can improve the support strength of the busbar support 10, the plug-in piece 32 is fixed on the mounting plate portion 12, which can improve the integration of the busbar support assembly 100, reduce the operation steps during assembly, and improve the assembly efficiency.

[0042] In some embodiments of the present application, as shown in FIGS. 5 and 6, the busbar support 10 includes a first section 13, a second section 14 and a third section 15 connected in sequence in the width direction of the busbar support 10, and the first section 13 and the third section 15 are arranged in the thickness direction of the busbar support 10. In this way, the support strength of the busbar support 10 can be further improved, and in the process of product design, the size and relative angle of the first section 13, the second section 14 and the third section 15 and other parameters can be adjusted to meet more product design needs.

[0043] In some embodiments of the present application, as shown in FIG. 6, the busbar support 10 is formed with reinforcing flanges 11 on both sides in the width direction, the two reinforcing flanges 11 are respectively a first flange 111 and a second flange 112, and in the thickness direction of the busbar support 10, the size of the first flange 111 is greater than that of the second flange 112. In this way, the support strength of the busbar support 10 can be further improved. It can be understood that in the width direction of the busbar support 10, the side close to the busbar 20 is subjected to greater force, and in the process of product design, the first flange 111 can be arranged on the side of the busbar support 10 close to the busbar 20, so that the support strength of the busbar support 10 meets the use needs, while saving production materials and reducing production costs.

[0044] In some embodiments of the present application, as shown in FIGS. 7-10, the busbar support 10 includes a busbar section 16 and an extension section 17, the busbar 20 is arranged on the busbar section 16, the extension section 17 is connected to one end of the busbar section 16 in the length direction, and the mounting plate part 12 is arranged on the side of the extension section 17 away from the busbar section 16. By arranging the extension section 17, the plug-in part 32 and the busbar 20 can be spaced apart. It can be understood that the temperature of the busbar 20 is relatively high, so that the probability of overheating of the plug-in part 32 during the operation of the battery module 1000 can be reduced, thereby improving the reliability of the battery module 1000 during operation. In the process of product design, the size of the extension section 17 and the busbar section 16 can be adjusted to meet more product design needs.

[0045] In some embodiments of the present application, as shown in FIGS. 2, 7 and 8, the busbar support 10 further includes an expansion section 18, the expansion section 18 is connected to one end of the extension section 17 away from the busbar section 16, the mounting plate part 12 is connected to one end of the expansion section 18 away from the extension section 17, and the movement of the mounting plate part 12 relative to the extension section 17 drives the expansion section 18 to expand and deform. In the process of assembly, the mounting plate part 12 can be moved according to the needs of the assembly space, so that the mounting plate part 12 and the plug-in part 32 are adapted to the assembly space, thereby reducing the assembly difficulty.

[0046] In some embodiments of the present application, as shown in FIGS. 2, 7 and 8, the plug-in part 32 is riveted and / or bonded to the mounting plate part 12. That is, the plug-in part 32 can be riveted to the mounting plate part 12, or the plug-in part 32 can be bonded to the mounting plate part 12, or the plug-in part 32 can be both riveted and bonded to the mounting plate part 12.

[0047] Preferably, in the present embodiment, the plug-in part 32 is both riveted and bonded to the mounting plate part 12. In the assembly process, the plug-in part 32 is first bonded to the mounting plate part 12, and then the plug-in part 32 and the mounting plate part 12 are riveted. In this way, the operator does not need to use an additional fixing part 43 to fix the plug-in part 32 when riveting, thereby reducing the operation difficulty, and the riveting and bonding operations are convenient, which can improve the production efficiency, and the riveting strength is high, which can meet the use requirements.

[0048] In some embodiments of the present application, as shown in FIGS. 9-12, the busbar support assembly 100 further comprises an output pole seat 40, the output pole seat 40 is provided with a first plate part 41 and a second plate part 42 on both sides in the length direction of the busbar support 10, the first plate part 41 is connected to the mounting plate part 12, and the plug-in part 32 is fixed to the second plate part 42. Among them, the output pole seat 40 is used for mounting the output pole busbar, the output pole busbar is used for converging the current on the plurality of busbars 20 and outputting outwardly, by mounting the output pole seat 40 on the mounting plate part 12 and fixing the plug-in part 32 on the output pole seat 40, the integration of the busbar support assembly 100 can be further improved, and in the assembly process, the output pole seat 40 and the plug-in part 32 can be assembled together with the busbar support assembly 100 to the battery module 1000, thereby further improving the assembly efficiency. Preferably, the first plate part 41 is riveted to the mounting plate part 12, so that the connection operation of the output pole seat 40 and the mounting plate part 12 is more convenient, and the connection strength can meet the use requirements.

[0049] In some embodiments of the present application, as shown in FIGS. 11 and 12, the output pole seat 40 further comprises a fixing part 43, the fixing part 43 is arranged between the first plate part 41 and the second plate part 42, and the fixing part 43 is formed with a fixing hole 431 for fixing the output pole busbar. In the assembly process, the output pole busbar is placed on the fixing part 43, and then the output pole busbar is fixed on the fixing part 43 through the fixing hole 431, so that the assembly method is relatively simple. Preferably, the fixing hole 431 is a threaded hole, and a bolt passes through a through hole on the output pole busbar to fix the output pole busbar on the fixing part 43.

[0050] The output pole seat 40 is further provided with oppositely arranged first and second support plates 44, and the fixing portion 43 is arranged between the first and second support plates 44. The first support plate is formed with a support hole 411 on a side facing the second support plate 44. The second support plate 44 is formed with a clamping hole 441. The busbar support assembly 100 further includes a protective cover 45 arranged in a spaced manner with the fixing portion 43 and opposite to the fixing hole 431. The protective cover 45 is provided with a support protrusion 451 and a clamping arm 452. The support protrusion 451 is fitted into the support hole 411, and the clamping arm 452 is fitted into the clamping hole 441. In this way, the arrangement of the protective cover 45 on the output pole seat 40 can be achieved. By arranging the protective cover 45, the protective cover 45 can provide protection for the output pole busbar, thereby further improving the reliability of the battery module 1000 during operation.

[0051] In some embodiments of the present application, the output pole seat 40 is an injection molded part. The first nut is embedded at the fixing portion 43 to form the fixing hole 431. The output pole seat 40 further includes a connecting portion 46. The second nut is embedded at the connecting portion 46 to form a connecting hole 47. The output pole seat 40 is connected to the first side beam 320 through the connecting hole 47. In the production process, the first nut is fixed at the fixing portion 43 by insert injection molding, and the second nut is fixed at the connecting portion 46. When the output pole seat 40 is formed, the first nut forms the fixing hole 431 on the fixing portion 43, and the second nut forms the connecting hole 47 on the connecting portion 46. In this way, the production efficiency is higher, and the production cost can be reduced.

[0052] In some embodiments of the present application, as shown in FIGS. 11 and 12, the first plate portion 41 is formed as the first support plate. The second support plate 44 is provided with a window 442, thereby forming a first support column and a second support column on the second support plate 44. The first and second support columns are each provided with a clamping hole 441. The protective cover 45 is respectively formed with a first folded edge 453, a second folded edge 454, and a third folded edge 455. The first and second folded edges 453 and 454 are arranged between the first and second plate portions 41 and 42, and the third folded edge 455 is arranged in the window 442. In this way, the heat dissipation area of the output pole busbar can be increased, thereby further improving the reliability of the battery module 1000 during operation.

[0053] In some embodiments of the present application, the busbar support 10 is a vacuum formed part. The vacuum formed part has high chemical stability, and the vacuum forming process has high production efficiency. In this way, the reliability of the battery module 1000 during operation can be further improved, and the production efficiency can be improved.

[0054] The battery module 1000 according to the second aspect of the present application is described below with reference to FIGS. 1-12.

[0055] As shown in FIG. 1, the battery module 1000 according to the second aspect of the present application comprises: a plurality of battery monomers 200 and the busbar support assembly 100 according to the first aspect of the present application.

[0056] Specifically, the plurality of battery monomers 200 are arranged in a stack in a first direction, at least one end of the battery monomer 200 in a second direction is provided with a pole 210, the busbar support assembly 100 is arranged at the end of the plurality of battery monomers 200 provided with the pole 210, the plurality of busbars 20 converge the plurality of battery monomers 200, the reinforcing flange 11 is attached to the end surface of the battery monomer 200 in a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0057] Among them, a plurality of pole 210 avoiding holes 19 are formed on the busbar support 10, the busbar 20 is riveted on the busbar support 10 and connected with the pole 210 through the pole 210 avoiding hole 19, and the reinforcing flange 11 is attached to the end surface of the battery monomer 200. The reinforcing flange 11 can occupy a smaller space for arrangement, improve the compactness of the battery module 1000, and the reinforcing flange 11 can fix the plurality of battery monomers 200, thereby improving the stability of the battery module 1000. Preferably, the reinforcing flange 11 is adhesively connected to the end surface of the battery monomer 200.

[0058] In some embodiments of the present application, as shown in FIG. 1 and FIG. 2, the battery module 1000 further comprises: a plurality of side beams 310 surrounding a frame 300, and the plurality of battery monomers 200 are arranged in the frame 300, wherein one of the side beams 310 is a first side beam 320, the first side beam 320 is provided with a mounting gap, one end of the busbar support 10 provided with the plug-in part 32 is arranged in the mounting gap, and the plug-in part 32 is lapped with the edge of the mounting gap on the side of the side beam 310 away from the battery monomer 200. In this way, the connection between the plug-in part 32 and the battery management system can be facilitated, and the mounting gap can provide a clearance for the busbar support 10.

[0059] When one end of the busbar support 10 is provided with the output pole seat 40, the extension section 17 is placed in the mounting gap and adhesively connected with the bottom wall of the mounting gap.

[0060] When one end of the busbar support 10 is provided with the telescopic section 18, during assembly, the telescopic section 18 is pushed towards the extension section 17 to make the mounting plate part 12 have a gap with the frame 300, so that the plurality of battery monomers 200 and the busbar support assembly 100 do not interfere with each other when they are loaded into the frame 300. After the plurality of battery monomers 200 and the busbar support assembly 100 are loaded into the frame 300, the mounting plate part 12 is pulled to make the telescopic section 18 placed in the mounting gap, then the plug-in part 32 is folded to make the plug-in part 32 attached to the mounting plate part 12, and the plug-in part 32 and the mounting plate part 12 are riveted.

[0061] While the embodiments of the application are described in conjunction with the appended drawings, various modifications and changes can be suggested by those skilled in the art, and it is intended that the appended claims encompass such modifications and changes as fall within the scope of the application. Industrial applicability

[0062] The busbar support assembly and the battery module provided by the application can improve the supporting strength of the busbar support by arranging the reinforcing flange on the busbar support assembly, can improve the integration of the busbar support assembly by fixing the plug-in part on the mounting plate part, can reduce the operation steps in the assembly process, and improve the assembly efficiency and the reliability in the working process.

Claims

1. A busbar support assembly, characterized by, The busbar support and the plurality of busbars are arranged on the busbar support, at least one side of the busbar support in the width direction is formed with a reinforcing flange, and one end of the busbar support in the length direction is provided with a mounting plate part. The flexible circuit board comprises a circuit board body and a plug-in part, the circuit board body is arranged on the busbar support, and the plug-in part is connected with the circuit board body and fixed on the mounting plate part. In the width direction of the busbar support, the busbar support comprises a first section, a second section and a third section connected in sequence, and the first section and the third section are arranged in the thickness direction of the busbar support.

2. The busbar support assembly of claim 1, wherein Both sides of the busbar support in the width direction are formed with the reinforcing flanges, the two reinforcing flanges are respectively a first flange and a second flange, and in the thickness direction of the busbar support, the size of the first flange is greater than that of the second flange.

3. The busbar support assembly of claim 1, wherein The busbar support comprises a busbar section and an extension section, the busbars are arranged on the busbar section, the extension section is connected to one end of the busbar section in the length direction, and the mounting plate part is arranged on one side of the extension section away from the busbar section.

4. The busbar support assembly of any of claims 1-3, wherein, The busbar support further comprises a telescopic section, the telescopic section is connected to one end of the extension section away from the busbar section, the mounting plate part is connected to one end of the telescopic section away from the extension section, and the movement of the mounting plate part relative to the extension section drives the telescopic section to deform.

5. The busbar support assembly of claim 4, wherein, The plug-in part is riveted and / or adhesively connected with the mounting plate part.

6. The busbar support assembly of claim 5, wherein, Further comprising:

7. The busbar support assembly of claim 4, wherein The output pole seat is provided with a first plate part and a second plate part on both sides in the length direction of the busbar support, the first plate part is connected with the mounting plate part, and the plug-in part is fixed on the second plate part. The output pole seat further comprises a fixing part arranged between the first plate part and the second plate part, and a fixing hole is formed in the fixing part for fixing the output pole busbar.

8. The busbar support assembly of claim 7, wherein, The output pole seat is further provided with a first support plate and a second support plate arranged oppositely, the fixing part is arranged between the first support plate and the second support plate, a support hole is formed on one side of the first support plate facing the second support plate, and a clamping hole is formed in the second support plate. The busbar support assembly further comprises a protective cover arranged between the fixing part and the fixing hole, the protective cover is provided with a support protrusion and a clamping arm, the support protrusion is matched in the support hole, and the clamping arm is matched in the clamping hole. The plurality of battery monomers are arranged in a first direction, and at least one end of the battery monomers in a second direction is provided with a pole column.

9. A battery module, characterized by The busbar support assembly of any one of claims 1-8 is arranged at one end of the plurality of battery monomers provided with the pole column, the plurality of busbars are connected with the plurality of battery monomers, the reinforcing flange is attached to the end surface of the battery monomers in a third direction, and the first direction, the second direction and the third direction are perpendicular to each other. Further comprising: ​ 10. The battery module of claim 9, wherein, ​ A plurality of side beams surround a frame, a plurality of battery monomers are arranged in the frame, one of the side beams is a first side beam, a mounting gap is formed on the first side beam, one end of the bus bar support provided with the plug-in part is arranged in the mounting gap, and the plug-in part is overlapped with the edge of the mounting gap on the side of the side beam away from the battery monomers.

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