CN220233398U

CN220233398U - Integrated busbar and battery module

Info

Publication number: CN220233398U
Application number: CN202321195615.5U
Authority: CN
Inventors: 徐爱华; 郭好猛; 陈涛; 郭耀辉; 王艺; 赵威威; 凌雪明; 翁蒙旗; 许少杰; 孙智超; 刘建国
Original assignee: Phylion Battery Co Ltd
Current assignee: Phylion Battery Co Ltd
Priority date: 2023-05-17
Filing date: 2023-05-17
Publication date: 2023-12-22
Anticipated expiration: 2033-05-17

Abstract

The utility model discloses an integrated busbar and a battery module, which comprises a plurality of electric cores, an FPC board, a bottom plate and a plurality of copper nickel plating sheets, wherein the bottom plate is positioned below the FPC board and is used for placing the FPC board. The plurality of copper nickel plating sheets are arranged on two sides of the top of the FPC board. Each side is provided with a plurality of copper nickel plating sheets at intervals, each copper nickel plating sheet comprises a plurality of leading-out sheets, one end of each leading-out sheet is used for being connected with a positive electrode lug and a negative electrode lug, and the positive electrode lug and the negative electrode lug are respectively arranged at two ends of the top of the battery cell along a third direction. The battery core and the FPC board are directly connected together through the copper nickel plating sheet, so that the aluminum row and the nickel sheet connected in the original integrated busbar are replaced, the structure of the integrated busbar is simplified, and the processing efficiency of the integrated busbar is improved. The plurality of copper nickel plating sheets are arranged on two sides of the top of the FPC board along the third direction, are connected with the positive electrode lug and the negative electrode lug of the battery cell through the leading-out sheets, and are used for acquiring voltage parameters of the battery cell.

Description

Integrated busbar and battery module

Technical Field

The utility model relates to the technical field of new energy power battery packs and energy storage, in particular to an integrated busbar and battery module.

Background

The integrated busbar is a highly integrated battery signal acquisition (such as temperature acquisition, pressure acquisition and the like) and management system, and in the prior art, the integrated busbar mainly comprises a plastic support, an FPC board assembly and a conductive bus connection aluminum bar (aluminum bar), wherein the FPC board assembly comprises an FPC board (Flexible Printed Circuit, chinese name is a flexible circuit board), a connector, a nickel sheet, an NTC resistor (Negative Temperature Coefficient, chinese name is a thermistor) and the like, the conductive bus connection aluminum bar is connected to the FPC board through the nickel sheet, and all devices on the FPC board assembly are pasted on the FPC board through SMT. The integrated busbar has the problems of complex overall structure and slow processing efficiency.

Disclosure of Invention

In order to overcome the above drawbacks, the present utility model is directed to an integrated busbar and a battery module, so as to solve the problems of complex overall structure and slow processing efficiency of the integrated busbar provided in the above background art.

In order to achieve the above purpose, the technical scheme adopted by the utility model is an integrated busbar, which comprises an FPC board, a bottom board and a plurality of copper nickel plating sheets, wherein the FPC board and the bottom board extend along a first direction, and the bottom board is positioned below the FPC board along a second direction and is used for placing the FPC board. The plurality of copper nickel plating sheets are arranged on two sides of the top of the FPC board along the third direction and are oppositely arranged along the third direction. Each side of the battery cell comprises a plurality of copper nickel plating sheets, each copper nickel plating sheet comprises a plurality of leading-out sheets, each leading-out sheet extends along a third direction, one end of each leading-out sheet is used for being connected with a positive electrode lug and a negative electrode lug, the positive electrode lug and the negative electrode lug are respectively arranged at two ends of the top of the battery cell along the third direction, and the first direction, the second direction and the third direction are mutually perpendicular.

According to the integrated busbar provided by the utility model, the FPC board is arranged on the bottom plate, and the battery core and the FPC board are directly connected together through the copper nickel plating sheet, so that the aluminum busbar and the nickel sheet connected in the original integrated busbar are replaced, the structure of the integrated busbar is simplified, and the processing efficiency of the integrated busbar is improved. The plurality of copper nickel plating sheets are arranged on two sides of the top of the FPC board along the third direction, are connected with the positive electrode lug and the negative electrode lug of the battery cell through the leading-out sheets, and are used for acquiring voltage parameters of the battery cell.

In some embodiments, each copper-plated sheet further includes a connecting sheet, each connecting sheet extending in the first direction and fixedly connected to the FPC board. The other end of each leading-out sheet along the third direction is connected with the connecting sheet.

By adopting the technical scheme, the other end of the leading-out sheet is connected with the FPC board through the connecting sheet, so that the battery cell and the FPC board are indirectly connected into a whole. Each connecting piece is connected with a plurality of leading-out pieces, and the number of the leading-out pieces can be adjusted according to the number of the electric cores.

In some embodiments, the bottom plate is provided with a plurality of first through holes corresponding to the battery cell liquid injection holes along the first direction at intervals, and the battery cell liquid injection holes are arranged between the positive electrode lug and the negative electrode lug along the third direction. The FPC board is provided with a plurality of second through holes corresponding to the positions of the first through holes along the first direction at intervals.

By adopting the technical scheme, the battery cell liquid injection holes are formed between the positive electrode lug and the negative electrode lug at the top of each battery cell and are used for injecting the supplementary electrolyte into the battery cells, and the through holes corresponding to the battery cells are required to be formed in the integrated busbar, so that the first through holes and the second through holes corresponding to the battery cell liquid injection holes are formed in the bottom plate and the FPC board.

In some embodiments, the bottom plate includes a clamping device, and the clamping device is disposed in the first through hole at intervals along the first direction. Each clamping device comprises a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are oppositely arranged along the first direction, the first clamping plate comprises a first abutting portion extending along the third direction and a first clamping portion extending along the first direction, the second clamping plate comprises a second abutting portion extending along the third direction and a second clamping portion extending along the first direction, and the clamping device is used for being abutted with the second through hole through the first abutting portion and the second abutting portion and fixed with the FPC board in a clamping mode through the first clamping portion and the second clamping portion.

By adopting the technical scheme, the FPC board is clamped and fixed with the bottom board through the clamping devices, the clamping devices are arranged in the first through holes at intervals along the first direction, each clamping device comprises a first clamping plate and a second clamping plate, the first clamping plate comprises a first abutting part and a first clamping part, the second clamping plate comprises a second abutting part and a second clamping part, the extending directions of the first abutting part and the second abutting part are the same, and the first clamping plate and the second clamping plate are abutted and fixed with the hole wall of the second through hole of the FPC board; the first clamping part and the second clamping part extend along opposite directions so as to be clamped and fixed with the panel surface of the FPC board.

In some embodiments, the base plate further comprises a spacer and a rubber nail. Along the first direction, all be equipped with the baffle between the copper nickel plating piece that is adjacent, the baffle extends along the third direction, and one end is connected with the bottom plate. The rubber nails are arranged at two ends of the bottom plate along the first direction.

By adopting the technical scheme, along the first direction, the adjacent copper nickel plating sheets are separated by the partition plate to form a plurality of sampling areas, so that the adjacent sampling areas are prevented from being affected when working.

In some embodiments, another technical solution adopted by the present utility model is a battery module, including a plurality of electric cells and the integrated busbar described in the above embodiments. The plurality of battery cells are arranged at intervals along the first direction, the integrated busbar is arranged above the plurality of battery cells, and the copper nickel plating sheet is connected with the battery cells. Each cell extends along a third direction, and the top is provided with a positive electrode lug, a negative electrode lug and a liquid injection hole.

Adopt above-mentioned technical scheme, battery module includes a plurality of electric cores and integrated busbar, and wherein, the FPC board passes through copper nickel plating piece and directly is connected with the electric core, and the bottom plate is arranged in a plurality of electric cores top to place the positive electrode ear and the negative electrode ear of electric core in the sampling area in correspondence.

In some embodiments, the integrated busbar further comprises a fixed frame and a cover plate. The top of fixed frame is equipped with the opening, and fixed frame is including holding the chamber, and a plurality of electric cores are located and are held the chamber, and the apron cover is established integrated female row for seal the opening.

By adopting the technical scheme, the integrated busbar further comprises a fixed frame and a cover plate, a plurality of electric cores are firstly placed in the accommodating cavity of the fixed frame, the integrated busbar, the electric cores and the fixed frame are fixed, and finally the cover plate is fixedly connected with the opening to seal and protect the electric core structure in the integrated busbar.

In some embodiments, the fixed frame includes a first end plate and a second end plate disposed opposite in a first direction. The first end plate and the second end plate extend along the third direction, the top is provided with a fixing hole and a fixing groove, the fixing hole is used for being fixedly inserted with the rubber nail, and the fixing groove is used for fixing the leading-out sheet.

By adopting the technical scheme, the first end plate and the second short plate are respectively provided with the fixing holes and the fixing grooves, and the fixing holes are fixedly connected with the rubber nails at the two ends of the bottom plate along the first direction, so that the integrated busbar and the fixing frame are fixed.

In some embodiments, the base, the spacer and the cover are all insulating materials.

By adopting the technical scheme, the bottom plate is positioned between the battery core and the FPC board, the partition plate is positioned between the copper nickel plating sheets, and the bottom plate, the partition plate and the cover plate which are made of insulating materials separate and protect the structures.

Drawings

Fig. 1 is a schematic view showing a part of a structure of an embodiment of an integrated busbar and battery module according to the present utility model;

FIG. 2 is an enlarged view of FIG. 1 at A;

fig. 3 is a schematic diagram showing a part of a structure of an embodiment of an integrated busbar and battery module according to the present utility model;

fig. 4 is a perspective view of an embodiment of an integrated busbar and battery module according to the present utility model;

in the figure:

1-FPC board; 10-a second through hole;

2-a bottom plate; 20-a first through hole; 21-a clamping device; 210-a first card; 211-a first abutment; 212-a first clamping part; 213-a second card; 214-a second abutment; 215-a second clamping portion; 22-a separator;

3-copper nickel plating sheet; 30-leading-out sheets; 31-connecting pieces;

4-an electric core; 40-positive electrode lugs; 41-negative electrode ear; 42-cell liquid injection holes;

5-fixing the frame; 50-a spacer plate; 51-a first end plate; 52-a second end plate; 53-fixing holes; 54-a fixed groove; 55-grooves;

6-cover plate;

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.

For convenience of subsequent description, the first direction (X), the second direction (Z), and the third direction (Y) are defined in this application in conjunction with fig. 1 before describing the specific structure of the integrated busbar and the battery module. The first direction is a length direction, such as an X direction, of the integrated busbar and the battery module when the integrated busbar and the battery module are normally placed; the second direction is the height direction, such as the Z direction, of the integrated busbar and the battery module when the integrated busbar and the battery module are normally placed; the third direction is the width direction, for example, the Y direction, of the integrated busbar and the battery module when the integrated busbar and the battery module are normally placed. The first direction (X), the second direction (Z) and the third direction (Y) are perpendicular to each other in this application. It is understood that the perpendicularity in this application is not absolute perpendicularity, and that approximate perpendicularity due to machining errors and assembly errors (e.g., an angle of 89.9 ° between two structural features) is also within the scope of the perpendicularity in this application.

Referring to fig. 1, fig. 1 shows a schematic diagram of a part of a structure of an integrated busbar and battery module according to an embodiment of the utility model.

In some embodiments, referring to fig. 1, the present utility model is adapted to provide an integrated busbar including an FPC board 1, a chassis 2, and a plurality of copper nickel plating sheets 3, wherein the FPC board 1 and the chassis 2 each extend in a first direction (indicated by an X direction in fig. 1), and the chassis 2 is located below the FPC board 1 in a second direction (indicated by a Z direction in fig. 1) for placing the FPC board 1. A plurality of copper nickel plating sheets 3 are provided on both sides of the top of the FPC board 1 in the third direction (shown in the Y direction in fig. 1) and are oppositely arranged in the third direction. Each side of the plurality of copper nickel plating sheets 3 is arranged at intervals along a first direction, each copper nickel plating sheet 3 comprises a plurality of leading-out sheets 30, each leading-out sheet 30 extends along a third direction, one end of each leading-out sheet is used for being connected with a positive electrode lug 40 and a negative electrode lug 41, the positive electrode lug 40 and the negative electrode lug 41 are respectively arranged at two ends of the top of the battery cell 4 along the third direction, and the first direction, the second direction and the third direction are mutually perpendicular.

According to the integrated busbar provided by the utility model, the FPC board 1 is arranged on the bottom board 2, and the battery core 4 and the FPC board 1 are directly connected together through the copper nickel plating sheet 3, so that the aluminum busbar and the nickel sheet connected in the original integrated busbar are replaced, the structure of the integrated busbar is simplified, the whole space utilization rate is improved, the processing flow of the integrated busbar is simplified, and the processing efficiency of the integrated busbar is improved. The copper nickel plating sheets 3 are arranged on two sides of the top of the FPC board 1 along the third direction, and are connected with the positive electrode lug 40 and the negative electrode lug 41 of the battery cell 4 through the lead-out sheets 30, so as to be used for acquiring voltage parameters of the battery cell 4.

In some embodiments, referring to fig. 1, each copper-nickel plated sheet 3 further includes a connection sheet 31, and each connection sheet 31 extends along the first direction and is fixedly connected to the FPC board 1. The other end of each of the lead-out pieces 30 in the third direction is connected to the connecting piece 31.

The other end of the lead-out tab 30 is illustratively connected to the FPC board 1 via a connecting tab 31, thereby indirectly connecting the battery cell 4 to the FPC board 1 as a unit. Each connecting piece 31 is connected with a plurality of leading-out pieces 30, and the number of the leading-out pieces 30 can be adjusted according to the number of the battery cells 4. In this embodiment, each copper-plated sheet 3 includes 4 lead-out sheets 30, two of which are adjacent to each other and connected to the positive electrode tab 40 and the other two to the negative electrode tab 41.

Referring to fig. 2, fig. 2 is an enlarged view at a in fig. 1.

In some embodiments, referring to fig. 2 and referring to fig. 1, the bottom plate 2 is provided with a plurality of first through holes 20 corresponding to the battery cell liquid injection holes 42 at intervals along the first direction, and the battery cell liquid injection holes 42 are provided between the positive electrode tab 40 and the negative electrode tab 41 along the third direction. The FPC board 1 is provided with a plurality of second through holes 10 corresponding to the positions of the first through holes 20 at intervals along the first direction.

Illustratively, a cell liquid injection hole 42 is disposed between the positive electrode tab 40 and the negative electrode tab 41 at the top of each cell 4, for injecting the supplementary electrolyte into the cell 4, and a through hole corresponding to the cell liquid injection hole needs to be disposed in the integrated busbar, so that the first through hole 20 and the second through hole 10 corresponding to the cell liquid injection hole 42 are disposed in the bottom plate 2 and the FPC board 1.

In some embodiments, referring to fig. 1 and 2, the base plate 2 includes a clamping device 21, and the clamping device 21 is disposed in the first through hole 20 at intervals along the first direction. Each clamping device 21 comprises a first clamping plate 210 and a second clamping plate 213, the first clamping plate 210 and the second clamping plate 213 are oppositely arranged along the first direction, the first clamping plate 210 comprises a first abutting portion 211 extending along the third direction and a first clamping portion 212 extending along the first direction, and the second clamping plate 213 comprises a second abutting portion 214 extending along the third direction and a second clamping portion 215 extending along the first direction, and is used for abutting against the second through hole 10 through the first abutting portion 211 and the second abutting portion 214 and is fixedly clamped with the FPC board 1 through the first clamping portion 212 and the second clamping portion 215.

Illustratively, the FPC board 1 is clamped and fixed with the bottom board 2 by the clamping devices 21, the clamping devices 21 are arranged in the first through hole 20 at intervals along the first direction, each clamping device 21 comprises a first clamping plate 210 and a second clamping plate 213, the first clamping plate 210 comprises a first abutting part 211 and a first clamping part 212, the second clamping plate 213 comprises a second abutting part 214 and a second clamping part 215, the extending directions of the first abutting part 211 and the second abutting part 214 are the same, and the first clamping plate 21 and the second clamping plate 213 are abutted and fixed with the hole wall of the second through hole 10 of the FPC board 1; the first and second engaging portions 212 and 215 extend in opposite directions, thereby being engaged and fixed with the board surface of the FPC board 1.

In some embodiments, referring to fig. 1, the base plate 2 further includes a spacer 22 and rubber nails. Along the first direction, a partition board 22 is arranged between the adjacent copper nickel plating sheets 3, the partition board 22 extends along the third direction, and one end of the partition board 22 is connected with the bottom plate 2. The rubber nails are arranged at two ends of the bottom plate 2 along the first direction.

Illustratively, adjacent copper-nickel plated sheets 3 are separated by a separator 22 in a first direction to form a plurality of sampling areas that avoid adjacent sampling areas from affecting each other during operation. The bottom plate 2 is fixed to the first end plate 51 and the second end plate 52 by rubber nails.

Referring to fig. 3 and fig. 4, fig. 3 shows a second schematic structural diagram of a portion of an integrated busbar and battery module according to an embodiment of the present utility model; fig. 4 is a perspective view illustrating an integrated busbar and battery module according to an embodiment of the present utility model.

In some embodiments, referring to fig. 1 to 4, another technical solution adopted by the present utility model is a battery module, including a plurality of electric cells 4 and the integrated busbar described in the above embodiments. The plurality of battery cells 4 are arranged at intervals along the first direction, the integrated busbar is arranged above the plurality of battery cells 4, and the copper nickel plating sheet 3 is connected with the battery cells 4. Each cell 4 extends along the third direction, and the top is provided with a positive electrode lug 40, a negative electrode lug 41 and a liquid injection hole.

The battery module includes a plurality of battery cells 4 and an integrated busbar, wherein the FPC board 1 is directly connected with the battery cells 4 through the copper nickel plating sheet 3, the bottom plate 2 is disposed above the plurality of battery cells 4, and the positive electrode tab 40 and the negative electrode tab 41 of the battery cells 4 are correspondingly disposed in the sampling area. The plurality of battery cells 4 are arranged at intervals in a group, the positive electrode lugs 40 of each group of battery cells 4 are in the same direction, and the positive electrode lugs 40 of each adjacent group of battery cells 4 are in opposite directions and are separated by a spacing plate 50.

In some embodiments, referring to fig. 3 and 4, the integrated busbar further comprises a fixed frame 5 and a cover plate 6. The top of the fixed frame 5 is provided with an opening, the fixed frame 5 comprises a containing cavity, a plurality of electric cores 4 are arranged in the containing cavity, and the cover plate 6 covers the integrated busbar and is used for closing the opening.

The integrated busbar further comprises a fixing frame 5 and a cover plate 6, wherein the plurality of electric cells 4 are firstly placed in the accommodating cavity of the fixing frame 5, then the integrated busbar is fixed with the electric cells 4 and the fixing frame 5, and finally the cover plate 6 is fixedly connected with the opening to seal and protect the electric cell 4 structure.

In some embodiments, referring to fig. 3 and 4, the fixed frame 5 includes a first end plate 51 and a second end plate 52 disposed opposite in a first direction. The first end plate 51 and the second end plate 52 extend along the third direction, the top is provided with a fixing hole 53 and a fixing groove 54, the fixing hole 53 is used for being fixedly inserted with the rubber nail, and the fixing groove 54 is used for fixing the lead-out sheet 30.

Illustratively, the first end plate 51 and the second short plate are provided with fixing holes 53 and fixing grooves 54, and the fixing holes 53 are fixedly connected with rubber nails at two ends of the bottom plate 2 along the first direction, so that the integrated busbar is fixed with the fixing frame 5. A plurality of grooves 55 are provided in each of the first and second end plates 51 and 52 for reducing the weight of the fixing frame 5. The integrated busbar has a overhanging tab 30, i.e. a positive tab and a negative tab, at both ends in the first direction and is fixed by bolting to the fixing groove 54.

In some embodiments, the bottom plate 2, the spacer 22, and the cover plate 6 are all insulating materials.

Illustratively, the bottom plate 2 is located between the battery core 4 and the FPC board 1, the partition 22 is located between the copper nickel plating sheets 3, and the bottom plate 2, the partition 22 and the cover plate 6 made of insulating materials separate and protect the structures.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. The integrated busbar is characterized by comprising an FPC board, a bottom board and a plurality of copper nickel plating sheets;

the FPC board and the bottom board extend along a first direction, and the bottom board is positioned below the FPC board along a second direction and is used for placing the FPC board;

the copper nickel plating sheets are arranged on two sides of the top of the FPC board along a third direction and are oppositely arranged along the third direction; each side of the plurality of copper nickel plating sheets is arranged at intervals along the first direction; each copper nickel plating piece contains a plurality of extraction pieces, every extraction piece is followed the third direction extends, and one end is used for being connected with anodal ear and negative pole ear, anodal ear with the negative pole ear is followed the both ends at electric core top are located respectively to the third direction, first direction the second direction with third direction mutually perpendicular.

2. The integrated busbar of claim 1, wherein each copper-nickel plated sheet further comprises a connecting sheet; each connecting sheet extends along the first direction and is fixedly connected with the FPC board; and the other end of each lead-out sheet along the third direction is connected with the connecting sheet.

3. The integrated busbar of claim 1, wherein the base plate is provided with a plurality of first through holes at intervals along the first direction, the first through holes being arranged corresponding to the battery cell liquid injection holes, and the battery cell liquid injection holes being arranged between the positive electrode tab and the negative electrode tab along the third direction; the FPC board is provided with a plurality of second through holes corresponding to the positions of the first through holes along the first direction at intervals.

4. The integrated busbar of claim 3, wherein the base plate includes a clamping device disposed within the first through hole at intervals along the first direction; each clamping device comprises a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are oppositely arranged along the first direction, the first clamping plate comprises a first abutting portion extending along the third direction and a first clamping portion extending along the first direction, and the second clamping plate comprises a second abutting portion extending along the third direction and a second clamping portion extending along the first direction, and the second clamping device is used for abutting against the second through holes through the first abutting portion and the second abutting portion and fixing the FPC board in a clamping manner through the first clamping portion and the second clamping portion.

5. The integrated busbar of claim 1, wherein the base plate further comprises a spacer and rubber nails; the separation plates are arranged between the adjacent copper-nickel plating sheets along the first direction, extend along the third direction, and are connected with the bottom plate at one end; the rubber nails are arranged at two ends of the bottom plate along the first direction.

6. A battery module comprising a plurality of cells and the integrated busbar of any one of claims 1 to 5; the plurality of electric cores are arranged at intervals along the first direction, the integrated busbar is arranged above the plurality of electric cores, and the copper nickel plating sheet is connected with the electric cores; each battery cell extends along the third direction, and the top is provided with a positive electrode lug, a negative electrode lug and a liquid injection hole.

7. The battery module of claim 6, further comprising a stationary frame and a cover plate; the top of fixed frame is equipped with the opening, fixed frame is including holding the chamber, a plurality of electric cores are located hold the chamber, the apron cover is established integrated female row is used for sealing the opening.

8. The battery module according to claim 7, wherein the fixing frame includes a first end plate and a second end plate disposed opposite in the first direction; the first end plate and the second end plate extend along the third direction, the top of the first end plate and the second end plate are respectively provided with a fixing hole and a fixing groove, and the fixing holes are used for being fixedly inserted into the rubber nails; the fixing groove is used for fixing the leading-out sheet.

9. The battery module of claim 7, wherein the base plate, the separator, and the cover plate are all insulating materials.