CN218414870U

CN218414870U - Laminate polymer battery module and new energy automobile

Info

Publication number: CN218414870U
Application number: CN202222470199.7U
Authority: CN
Inventors: 张光华; 任根庄; 唐文兵; 吴广; 叶国华; 曾国强; 张志平
Original assignee: Guangdong Greenway Technology Co Ltd
Current assignee: Guangdong Greenway Technology Co Ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-01-31
Anticipated expiration: 2032-09-16

Abstract

The application provides a laminate polymer battery module and new energy automobile. The soft-package battery module comprises the battery core assembly, the adapter plate and the fixing mechanism, wherein the battery core assembly comprises a plurality of battery cell monomers, and the battery cell monomers are sequentially overlapped to form a plurality of welding parts; the adapter plate comprises a PCB and a plurality of busbars, the busbars are uniformly distributed on the PCB in rows, and each welding part is correspondingly welded on one busbar; the fixing mechanism comprises a pressing plate assembly, a strap, an insulating plate, a protective plate, a fixing support and two supporting pieces, wherein the pressing plate assembly comprises a first pressing plate and a second pressing plate which are located on two sides of the cell assembly, the strap is used for bundling the pressing plate assembly, the insulating plate is arranged on the adapter plate, the first pressing plate and the second pressing plate are respectively provided with one supporting piece, any one supporting piece is connected with the fixing support, the fixing support is located above the insulating plate, and the protective plate is located on one side face, away from the insulating plate, of the fixing support. The fixing bracket is installed by arranging the supporting piece, so that the protection board is simpler and firmer to install.

Description

Laminate polymer battery module and new energy automobile

Technical Field

The utility model relates to a technical field of battery especially relates to a laminate polymer battery module and new energy automobile.

Background

Nowadays, with the development of lithium ion batteries, more and more electric vehicles adopt rechargeable lithium ion batteries, wherein a soft package battery cell (polymer lithium ion monomer battery cell) is also widely used in various environments. Therefore, the fixation of the protective plate is important, which is related to whether the lithium ion battery can be stably used.

However, the conventional protection plate is difficult to fix, and either the protection plate is fixed on the side tube or a new part is opened to fix the protection plate in a switching manner, so that the protection plate is troublesome to fix.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, provide a laminate polymer battery module and new energy automobile that make the installation of protection shield simpler and firm.

The purpose of the utility model is realized through the following technical scheme:

a pouch battery module, includes: the battery core assembly comprises a plurality of battery core monomers, and the battery core monomers are sequentially overlapped to form a plurality of welding parts; the adapter plate comprises a PCB and a plurality of busbars, the busbars are uniformly distributed on the PCB in rows, and each welding part is correspondingly welded on one busbar; the fixing mechanism comprises a pressing plate assembly, a strap, an insulating plate, a protective plate, a fixing support and two supporting pieces, the pressing plate assembly comprises a first pressing plate and a second pressing plate, the first pressing plate and the second pressing plate are respectively positioned on two sides of the electric core assembly, and the strap is used for bundling the pressing plate assembly; the insulation board is located the keysets deviates from a side of electricity core subassembly, first clamp plate with the second clamp plate all is equipped with one support piece, arbitrary support piece all with the fixed bolster is connected, the fixed bolster is located the top of insulation board, just the fixed bolster avoid in the insulation board sets up, the protection shield is located the fixed bolster is kept away from a side of insulation board.

In one embodiment, each of the supporting members includes a first supporting member and a second supporting member, two ends of the top of the first pressing plate are movably connected to one of the first supporting member and the second supporting member, respectively, and the other of the first supporting member and the second supporting member is movably connected to two ends of the top of the second pressing plate, respectively.

In one embodiment, each of the supporting members includes a first fixing portion and a second fixing portion, any one of the first fixing portions is movably connected to the fixing bracket, the first pressing plate and the second pressing plate are respectively connected to one of the second fixing portions, a first limiting groove is formed between the second fixing portion and the first pressing plate, a second limiting groove is formed between the second fixing portion and the second pressing plate, and the strap is disposed through the first limiting groove and the second limiting groove.

In one embodiment, the battery cell assembly further includes a plurality of EVA back glue boards, each EVA back glue board is disposed between two battery cells, and the EVA back glue boards are also disposed between the battery cells and the first and second pressing plates.

In one embodiment, the strap includes a first strap disposed adjacent a top end of the platen assembly and a second strap disposed adjacent a bottom end of the platen assembly.

In one embodiment, the first pressing plate and the second pressing plate are provided with abutting parts and a plurality of limiting parts, two ends of each abutting part are respectively abutted with the first belt band and the second belt band, one end of the first belt band, far away from each abutting part, is abutted with at least one limiting part, and one end of the second belt band, far away from each abutting part, is abutted with at least one limiting part.

In one embodiment, the cell assembly further includes a plurality of spaced EVA strips, an accommodating groove is formed between one tab portion of each cell unit and one tab portion of another adjacent cell unit, and each spaced EVA is accommodated in one accommodating groove.

In one embodiment, the plurality of busbars are arranged at equal intervals.

In one embodiment, two through holes are distributed on two sides of each busbar, and each through hole is used for penetrating a tab of one battery cell.

The utility model provides a new energy automobile, includes automobile body and as above any embodiment laminate polymer battery module, laminate polymer battery module locates automobile body.

Compared with the prior art, the utility model discloses a but not only be limited to following advantage:

1. firstly, stacking the battery cell monomers to form a battery cell assembly, arranging a first pressing plate and a second pressing plate on two sides of the battery cell assembly, bundling the pressing plate assembly by using a strap to shape the battery cell assembly, then welding an adapter plate on the battery cell assembly, and then sequentially installing a fixed support and a protection plate to form a soft package battery module;

2. the fixing bracket is installed by arranging the supporting piece on the pressing plate assembly, so that the protection plate is simpler and firmer to install.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a pouch battery module in an embodiment;

fig. 2 is an exploded view of the pouch battery module shown in fig. 1;

fig. 3 is an enlarged view of the pouch battery module shown in fig. 2 at a.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The application provides a laminate polymer battery module, include: the battery cell assembly comprises a plurality of battery cell monomers, and the battery cell monomers are sequentially overlapped to form a plurality of welding parts; the adapter plate comprises a PCB and a plurality of busbars, the busbars are uniformly distributed on the PCB in rows, and each welding part is correspondingly welded on one busbar; the fixing mechanism comprises a pressing plate assembly, a strap, an insulating plate, a protecting plate, a fixing support and two supporting pieces, the pressing plate assembly comprises a first pressing plate and a second pressing plate, the first pressing plate and the second pressing plate are respectively positioned on two sides of the electric core assembly, and the strap is used for bundling the pressing plate assembly; the insulation board is located the keysets deviates from a side of electricity core subassembly, first clamp plate with the second clamp plate all is equipped with one support piece, arbitrary support piece all with the fixed bolster is connected, the fixed bolster is located the top of insulation board, just the fixed bolster avoid in the insulation board sets up, the protection shield is located the fixed bolster is kept away from a side of insulation board.

In order to better understand the technical scheme and the beneficial effects of the present application, the following detailed description is made in conjunction with specific embodiments:

please refer to fig. 1 and fig. 2, which illustrate a pouch battery module 10 according to an embodiment of the present invention, including: the battery cell assembly comprises a battery cell assembly 100, an adapter plate 200 and a fixing mechanism 300, wherein the battery cell assembly 100 comprises a plurality of battery cell monomers 110, and the battery cell monomers 110 are sequentially overlapped to form a plurality of welding parts (not shown); the interposer 200 includes a PCB210 and a plurality of busbars 220, the busbars 220 are uniformly distributed on the PCB210 in rows, and each of the soldering portions is correspondingly soldered to one of the busbars 220; fixing mechanism 300 includes clamp plate subassembly 310, strap 320, insulating board 330, protection shield 340, fixed bolster 350 and two support piece 360, clamp plate subassembly 310 includes first clamp plate 312 and second clamp plate 314, first clamp plate 312 with second clamp plate 314 is located respectively the both sides of electric core subassembly 100, strap 320 is used for tying up clamp plate subassembly 310, insulating board 330 is located adapter plate 200 deviates from a side of electric core subassembly 100, first clamp plate 312 with second clamp plate 314 all is equipped with one support piece 360, arbitrary support piece 360 all with fixed bolster 350 is connected, fixed bolster 350 is located the top of insulating board 330 and not with insulating board 330 butt, protection shield 340 is located fixed bolster 350 keeps away from a side of insulating board 330.

In this embodiment, a plurality of battery cells 110 are stacked together to form a battery core assembly 100, then a first pressing plate 312 and a second pressing plate 314 are respectively disposed on two sides of the battery core assembly 100, and an external force is simultaneously applied to the first pressing plate 312 and the second pressing plate 314, so that the battery core assembly 100 is pressed by the external force from two sides of the pressing plate assembly 310, and then the pressing plate assembly 310 is bundled by a band 320, so that the battery core assembly 100 between the first pressing plate 312 and the second pressing plate 314 is fixed to a fixed shape by the band 320; since the plurality of bus bars 220 are distributed on the PCB210, it can be understood that the PCB210 is a circuit board, the interposer 200 can be placed on the electric core assembly 100, and the plurality of electric core monomers 110 are sequentially overlapped to form a plurality of welding portions, and each welding portion is welded to a corresponding bus bar 220, so that the interposer 200 is fixed on the electric core assembly 100, wherein, in order to quickly fix the interposer 200 on the electric core assembly 100, each welding portion can be welded to a corresponding bus bar 220 through a furnace; next, an insulating plate 330 is disposed on the interposer 200, for example, the insulating plate 330 can be attached to the interposer 200 by gluing to insulate and protect the electric core assembly 100 and the interposer 200, and then a fixing bracket 350 and a protecting plate 340 are sequentially disposed on the insulating plate 330, wherein the first pressing plate 312 and the second pressing plate 314 are both provided with a supporting member 360, and the pressing plate assembly 310 is fixed and formed by the strap 320, and each supporting member 360 is connected to the fixing bracket 350, so that the fixing bracket 350 is fixed on the pressing plate assembly 310, and then the protecting plate 340 is disposed on the fixing bracket 350, it can be understood that the fixing bracket 350 and the protecting plate 340 are both provided with corresponding screw holes, so that the protecting plate 340 is screwed onto the fixing bracket 350, and the assembly of the pouch battery module 10 is completed.

In the embodiment, the soft-package battery module 10 is divided into the battery cell assembly 100, the adapter plate 200 and the fixing mechanism 300 for assembly, so that the assembly and the fixation of the soft-package battery module 10 are modularized, and the structure is simpler; in the fixing mechanism 300, since the band 320 has fixed and molded the platen assembly 310, the fixing bracket 350 can be installed on the platen assembly 310 by providing the supporting member 360, and the fixing bracket 350 is used for fixing the protection plate 340, so that the installation of the protection plate 340 is simpler and more secure.

In one embodiment, referring to fig. 1, each of the supporting members 360 includes a first supporting sub-member 362 and a second supporting sub-member 364, two ends of the top of the first pressing plate 312 are movably connected to the first supporting sub-member 362 and the second supporting sub-member 364, respectively, and the other of the first supporting sub-member 362 and the other of the second supporting sub-member 364 are movably connected to two ends of the top of the second pressing plate 314, respectively. In the present embodiment, the supporting member 360 includes a first supporting sub-member 362 and a second supporting sub-member 364, and the first pressing plate 312 and the second pressing plate 314 are connected to the first supporting sub-member 362 and the second supporting sub-member 364, it can be understood that two first supporting sub-members 362 are diagonally corresponding, and two second supporting sub-members 364 are also diagonally corresponding, so that when two first supporting sub-members 362 and two second supporting sub-members 364 are simultaneously used to connect one fixing bracket 350, the four ends of the fixing bracket 350 are respectively connected to the two ends of the top of the first pressing plate 312 and the two ends of the top of the second pressing plate 314, and thus the fixing bracket 350 is more firmly connected to the pressing plate assembly 310.

In one embodiment, referring to fig. 2, each of the supporting members 360 includes a first fixing portion 3601 and a second fixing portion 3602, any one of the first fixing portions 3601 is movably connected to the fixing bracket 350, the first pressing plate 312 and the second pressing plate 314 are respectively connected to one of the second fixing portions 3602, a first limiting groove 3603 is formed between the second fixing portion 3602 and the first pressing plate 312, a second limiting groove 3604 is formed between the second fixing portion 3602 and the second pressing plate 314, and the strap 320 penetrates through the first limiting groove 3603 and the second limiting groove 3604. In this embodiment, each of the second fixing portions 3602 is connected to the first pressing plate 312 and the second pressing plate 314, so that the first pressing plate 312 and the second pressing plate 314 are respectively provided with a supporting member 360, and the first fixing portion 3601 of each supporting member 360 is used for fixedly connecting the fixing bracket 350. In addition, a first limiting groove 3603 is formed between the first pressing plate 312 and the second fixing portion 3602 of the supporting member 360 connected with the first pressing plate, a second limiting groove 3604 is formed between the second pressing plate 314 and the second fixing portion 3602 of the supporting member 360 connected with the second pressing plate, and the strap 320 simultaneously penetrates through the first limiting groove 3603 and the second limiting groove 3604, so that the strap 320 is limited through the first limiting groove 3603 and the second limiting groove 3604, the strap 320 is prevented from falling off from the pressing plate assembly 310, the first pressing plate 312 and the second pressing plate 314 are fixed more firmly, and the electric core assembly 100 is ensured to be fixed and formed more reliably.

In one embodiment, referring to fig. 2, the electric core assembly 100 further includes a plurality of EVA adhesive-backed sheets 120, where EVA is Ethylene Vinyl Acetate Copolymer, which is an adhesive film with high thermosetting property and high adhesiveness. Each EVA back adhesive plate 120 is disposed between two battery cells 110, and the EVA back adhesive plate 120 is also disposed between the battery cell 110 and the first pressing plate 312 and the second pressing plate 314. In this embodiment, through setting up a plurality of EVA gum plate 120 for bond each other between two adjacent electric core monomers 110, electric core monomer 110 still bonds with first clamp plate 312 and second clamp plate 314 respectively simultaneously, and, makes each electric core monomer 110's activity better, thereby has prolonged electric core subassembly 100's life, has improved laminate polymer battery module 10's benefit.

In one embodiment, referring to fig. 2, the strap 320 includes a first strap 322 and a second strap 324, the first strap 322 is disposed adjacent to the top end of the platen assembly 310, and the second strap 324 is disposed adjacent to the bottom end of the platen assembly 310. Thus, the first strap 322 and the second strap 324 are respectively arranged at the top end and the bottom end of the pressing plate assembly 310, so that the fixing between the first pressing plate 312 and the second pressing plate 314 is firmer, and the fixing and forming of the electric core assembly 100 are more reliable.

Further, the first pressing plate 312 and the second pressing plate 314 are each provided with an abutting member 3101 and a plurality of limiting members 3102, two ends of each abutting member 3101 abut against the first belt 322 and the second belt 324, respectively, one end of the first belt 322, which is far away from each abutting member 3101, abuts against at least one limiting member 3102, and one end of the second belt 324, which is far away from each abutting member 3101, abuts against at least one limiting member 3102. In this embodiment, the abutting member 3101 and the plurality of limiting members 3102 are respectively disposed on the first pressing plate 312 and the second pressing plate 314, wherein both ends of the first band 322 are limited by the plurality of limiting members 3102 and the two abutting members 3101, and similarly, both ends of the second band 324 are limited by the plurality of limiting members 3102 and the two abutting members 3101, so that the first band 322 and the second band 324 are firmly used for binding the first pressing plate 312 and the second pressing plate 314, and the fixing of the pressing plate assembly 310 is further strengthened.

In one embodiment, referring to fig. 3, the battery cell assembly 100 further includes a plurality of spaced EVA strips 130, a receiving groove 116 is formed between one tab portion 112 of each battery cell 110 and one tab portion 112 of another corresponding battery cell 110, and each spaced EVA130 is received in one receiving groove 116. In this embodiment, one spacing EVA strip 130 is disposed in each accommodating groove 116, so that each cell unit 110 can be bonded to the tab 112 of an adjacent cell unit 110 at the tab 112, and the spacing EVA strip 130 can also ensure that two adjacent cell units 110 can obtain better insulation protection at the respective tab 112.

In one embodiment, referring to fig. 2, the plurality of bus bars are disposed at equal intervals. In the present embodiment, since a welding portion is welded to each bus bar 220, and each welding portion is formed by overlapping two adjacent battery cells 110, a plurality of battery cells 110 are stacked and form the battery cell assembly 100. In this way, the plurality of battery cells 110 are arranged at equal intervals, and the plurality of bus bars 220 are arranged at equal intervals in order to better fix the adapter plate 200 to the battery assembly 100.

In one embodiment, referring to fig. 2, two through holes 211 are distributed on both sides of each bus bar 220, and each through hole 211 is used for penetrating a tab 114 of one battery cell unit 110. In this embodiment, when the interposer 200 is mounted on the battery assembly 100, the tab 114 of each battery cell 110 penetrates through a corresponding through hole 211, and then one tab 114 of each battery cell 110 and one tab 114 of another battery cell 110 are mutually bent and overlapped to form a welding portion, so as to form a plurality of welding portions, and then each welding portion is welded on a corresponding bus bar 220, so that the interposer 200 is fixed on the battery assembly 100.

The utility model also provides a new energy automobile, include automobile body and as above-mentioned arbitrary embodiment laminate polymer battery module, laminate polymer battery module is located automobile body.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a laminate polymer battery module which characterized in that includes:

the battery core assembly comprises a plurality of battery core monomers, and the battery core monomers are sequentially overlapped to form a plurality of welding parts;

the adapter plate comprises a PCB and a plurality of busbars, the busbars are uniformly distributed on the PCB in rows, and each welding part is correspondingly welded on one busbar;

the fixing mechanism comprises a pressing plate assembly, a clamping band, an insulating plate, a protecting plate, a fixing support and two supporting pieces, the pressing plate assembly comprises a first pressing plate and a second pressing plate, the first pressing plate and the second pressing plate are respectively positioned on two sides of the electric core assembly, and the clamping band is used for bundling the pressing plate assembly; the insulation board is located the keysets deviates from a side of electricity core subassembly, first clamp plate with the second clamp plate all is equipped with one support piece, arbitrary support piece all with the fixed bolster is connected, the fixed bolster is located the top of insulation board, just the fixed bolster avoid in the insulation board sets up, the protection shield is located the fixed bolster is kept away from a side of insulation board.

2. The laminate battery module as recited in claim 1, wherein each of the supporting members comprises a first supporting member and a second supporting member, two ends of the top of the first pressing plate are movably connected to one of the first supporting member and the second supporting member, and the other of the first supporting member and the second supporting member are movably connected to two ends of the top of the second pressing plate.

3. The laminate battery module as recited in claim 1, wherein each of the supporting members comprises a first fixing portion and a second fixing portion, any one of the first fixing portions is movably connected to the fixing bracket, the first pressing plate and the second pressing plate are respectively connected to one of the second fixing portions, a first limiting groove is formed between the second fixing portion and the first pressing plate, a second limiting groove is formed between the second fixing portion and the second pressing plate, and the strap is inserted into the first limiting groove and the second limiting groove.

4. The soft package battery module of claim 1, wherein the cell assembly further comprises a plurality of EVA back adhesive plates, each of the EVA back adhesive plates is disposed between two of the cell units, and the EVA back adhesive plates are also disposed between the cell units and the first and second pressing plates.

5. The pouch battery module according to claim 1, wherein the band comprises a first band and a second band, the first band is disposed adjacent to a top end of the pressure plate assembly, and the second band is disposed adjacent to a bottom end of the pressure plate assembly.

6. The laminate battery module as recited in claim 5, wherein the first pressing plate and the second pressing plate are each provided with an abutting member and a plurality of limiting members, both ends of each abutting member abut against the first band and the second band, respectively, one end of the first band, which is away from each abutting member, abuts against at least one of the limiting members, and one end of the second band, which is away from each abutting member, abuts against at least one of the limiting members.

7. The laminate battery module of claim 1, wherein the cell assembly further comprises a plurality of spaced EVA strips, a receiving groove is formed between one tab portion of each cell unit and one tab portion of another adjacent cell unit, and each spaced EVA strip is received in one receiving groove.

8. The pouch battery module defined in claim 1 wherein the plurality of bus bars are equally spaced.

9. The laminate polymer battery module of claim 1, wherein two through holes are distributed on two sides of each busbar, and each through hole is used for penetrating a tab of one cell.

10. A new energy automobile, characterized in that includes the automobile body and according to any one of claims 1 to 9 soft packet of battery module, soft packet of battery module is located the automobile body.