CN210349919U

CN210349919U - VDA-sized soft package battery module

Info

Publication number: CN210349919U
Application number: CN201921410113.3U
Authority: CN
Inventors: 葛满; 赵群坡; 祁泾平; 蒋玮
Original assignee: Jingjin New Energy Technology Yuyao Co ltd
Current assignee: Jingjin New Energy Technology Yuyao Co ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-04-17
Anticipated expiration: 2029-08-28

Abstract

The utility model belongs to the technical field of new energy automobile drive battery technique and specifically relates to a laminate polymer battery module of VDA size, including electric core, heat conduction box, busbar supporting component, the female row of positive pole, the female row of negative pole, flexible printed circuit board, end plate, metal framework, in heat conduction box was arranged in to electric core, the both ends of electric core respectively were equipped with an utmost point ear, and utmost point ear passes behind the heat conduction box, is connected with busbar supporting component, and a plurality of heat conduction box piles into battery module body, and battery module body adopts the cladding of metal framework to fasten, and the both ends of battery module body are equipped with the end plate. Compared with the prior art, the battery module has the advantages that the battery core is placed in the heat conduction box, the heat conduction box is directly contacted with the heat management mechanism of the battery pack through the hollow structure of the metal frame, and the heat dissipation capacity of the battery module is improved; under the unchangeable prerequisite of battery module size, through the structure that changes busbar supporting component, can realize different cluster and parallel combination, the flexibility is high.

Description

VDA-sized soft package battery module

Technical Field

The utility model belongs to the technical field of new energy automobile drive battery technique and specifically relates to a laminate polymer battery module of VDA size.

Background

The battery cost of the electric automobile accounts for a large proportion of the cost of the whole automobile, and some large host factories hope to reduce the development cost of the battery pack in a mode of purchasing a VDA size standard module, so that the development of the VDA size module is promoted by the requirement. The VDA size here means the size specified in the german automotive industry quality standard established by the german automotive industry association. Compared with a square lithium ion battery, the soft-package lithium ion battery has the advantages of high energy density and high safety performance. However, the difficulty of integrating the battery cell into the VDA size module is high, and the problems of strength, heat dissipation, fixation, production process and the like need to be solved.

Therefore, a flexible package battery module with a VDA size needs to be designed, which can be flexibly configured into different serial-parallel numbers, and can meet the requirements of strength, heat dissipation, fixation and production process.

Disclosure of Invention

The utility model aims at overcoming prior art not enough, providing a laminate polymer battery module of VDA size, can enough the flexibility dispose into different cluster and number, can satisfy intensity, heat dissipation, fixed and production technological requirement again.

In order to achieve the purpose, the utility model relates to a laminate polymer battery module of VDA size, including electric core, heat conduction box, busbar supporting component, anodal female arranging, female arranging of negative pole, flexible printed circuit board, end plate, metal crate, its characterized in that: in heat conduction box was arranged in to electric core, the both ends of electric core respectively were equipped with a utmost point ear, and utmost point ear passes heat conduction box back, is connected with busbar supporting component, and female arranging of positive pole, the female row of negative pole, flexible printed circuit board are fixed on busbar supporting component, and a plurality of heat conduction box is piled up into battery module body, and battery module body adopts metal crate cladding fastening, and the both ends of battery module body are equipped with the end plate, and the end plate is fixed on metal crate.

The top of the heat conduction box is provided with a limit groove, and the bottom of the heat conduction box above is clamped in the limit groove of the heat conduction box below.

The both ends of heat conduction box respectively be equipped with a spout, busbar supporting component be equipped with take the bellied slide rail of a plurality of buckle, the slide rail card is gone into in the spout.

The top and the bottom of the heat conduction box are provided with grooves, the top and the bottom of the metal frame are provided with strip-shaped structures, and the strip-shaped structures are embedded into the grooves.

The end plate bottom be equipped with a plurality of buckles, the end plate both sides are equipped with the metal connecting piece of moulding plastics, the bottom of end plate is passed through buckle and metal frame's draw-in groove joint, the both sides of end plate are passed through metal connecting piece and metal frame welded connection.

Two metal round pipe inserts are molded on the end plate in an injection mode.

The top and the bottom of the metal frame are provided with hollow structures.

The positive busbar, the negative busbar, the flexible printed circuit board and the busbar support assembly are fixed by bolts.

The number of the battery cores is 12.

The busbar support assembly is of a busbar support and busbar integrated injection molding structure.

Compared with the prior art, the battery module has the advantages that the battery core is placed in the heat conduction box, and the heat conduction box can be in direct contact with the heat management mechanism of the battery pack through the hollow structure of the metal frame, so that the heat dissipation capacity of the battery module is greatly improved; on the premise that the size of the battery module is not changed, different serial-parallel combinations can be realized by changing the structure of the bus bar supporting assembly, and the flexibility is high; the end plate is designed, so that the strength is ensured while the installation and the fixation are convenient; the bus bar support and the bus bar integrated injection molding are adopted, so that the assembling quality of the battery module and the reliability of tab welding are improved, and the requirements of the production process are met.

Drawings

Fig. 1 is an exploded view of the present invention.

Fig. 2 is a perspective view of the present invention.

Fig. 3 is a bottom schematic view of the present invention.

Detailed Description

The invention will now be further described with reference to the accompanying drawings.

Referring to fig. 1, fig. 2 and fig. 3, the utility model relates to a soft-package battery module of VDA size, including electric core, heat conduction box, busbar supporting component, anodal female arranging, female the arranging of negative pole, flexible printed circuit board, the end plate, metal framework, electric core is arranged in heat conduction box 5, the both ends of electric core respectively are equipped with a utmost point ear 7, utmost point ear 7 passes behind heat conduction box 5, be connected with busbar supporting component 4, busbar supporting component 4 has injectd the position between utmost point ear 7 and the busbar, anodal female arranging 6, female the arranging of negative pole 3, flexible printed circuit board 2 is fixed on busbar supporting component 4, flexible printed circuit board 2 is used for gathering voltage and temperature, the reliability of using flexible printed circuit board 2 to gather voltage temperature signal is higher, insulating problems such as short circuit are difficult for taking place in flexible printed circuit board 2 sampling, it is more reliable. A plurality of heat conduction box 5 piles up into the battery module body, and the battery module body adopts the 8 cladding of metal crate to fasten, and the both ends of battery module body are equipped with end plate 1, and end plate 1 is fixed on metal crate 8.

The utility model discloses in, the top of heat conduction box 5 is provided with the spacing groove, and the heat conduction box 5 bottom card of top is at the spacing inslot of heat conduction box 5 in the below.

The both ends of heat conduction box 5 respectively are equipped with a spout, and busbar supporting component 4 is equipped with the bellied slide rail of taking a plurality of buckle, and the slide rail card is gone into in the spout.

The top and the bottom of the heat conduction box 5 are provided with grooves 5a, the top and the bottom of the metal frame 8 are provided with strip-shaped structures 8b, and the strip-shaped structures 8b are embedded into the grooves 5 a.

A plurality of buckles 1c are arranged at the bottom of the end plate 1, metal connecting pieces 1b for injection molding are arranged on two sides of the end plate 1, the bottom of the end plate 1 is connected with a clamping groove 8a of a metal frame 8 through the buckles 1c in a clamped mode, and two sides of the end plate 1 are connected with the metal frame 8 through the metal connecting pieces 1b in a welded mode. Two metal round pipe inserts 1a are injected on the end plate 1 and used for installing and fixing the battery module body. The structure of the end plate 1 has the functions of strength, insulation, installation and fixation, and the weight is light.

The metal frame 8 is made of two parts and forms a closed cavity by welding. The top and the bottom of the metal frame 8 are provided with large-area hollow structures, the heat conduction box 5 is made of high-heat-conductivity metal materials, and the heat conduction box 5 is in direct contact with a heat management mechanism of the battery pack, so that heat of the battery cell is conducted to the heat management mechanism through the heat conduction box 5, and the heat dissipation capacity of the battery module is greatly improved

The positive busbar 6, the negative busbar 3, the flexible printed circuit board 2 and the busbar support assembly 4 are fixed by bolts.

The number of the cells in the example is 12. The device can be configured into various combinations such as 1 parallel 12 strings, 2 parallel 6 strings, 3 parallel 4 strings, 4 parallel 3 strings and the like according to different requirements, so that the development cost is greatly reduced.

The busbar support assembly 4 is of a busbar support and busbar integrated injection molding structure. And a hole matched with the thickness of the lug 7 of the battery cell and the distance between two adjacent lugs 7 is reserved on the busbar support component 4.

The utility model discloses a VDA size satisfies the dimensional requirement of VDA module, and the commonality is stronger in the design of battery package. The utility model discloses reduced battery module assembly material kind, reduced the assemble duration, reduced module manufacturing cost. The utility model discloses automatic production can be realized to the battery module, improves production efficiency, reduces the cost of labor.

Claims

1. The utility model provides a laminate polymer battery module of VDA size, includes that electric core, heat conduction box, busbar supporting component, anodal female arranging, negative pole female arranging, flexible printed circuit board, end plate, metal frame, its characterized in that: in heat conduction box (5) was arranged in to electric core, the both ends of electric core respectively were equipped with one utmost point ear (7), utmost point ear (7) pass heat conduction box (5) back, be connected with busbar supporting component (4), anodal female arranging (6), female (3) of arranging of negative pole, flexible printed circuit board (2) are fixed on busbar supporting component (4), a plurality of heat conduction box (5) are piled up into the battery module body, the battery module body adopts metal crate (8) cladding fastening, the both ends of battery module body are equipped with end plate (1), end plate (1) are fixed on metal crate (8).

2. The VDA-sized pouch battery module according to claim 1, wherein: the top of the heat conduction box (5) is provided with a limit groove, and the bottom of the heat conduction box (5) above is clamped in the limit groove of the heat conduction box (5) below.

3. The VDA-sized pouch battery module according to claim 1, wherein: the both ends of heat conduction box (5) respectively be equipped with a spout, busbar supporting component (4) be equipped with take the bellied slide rail of a plurality of buckle, the slide rail card is gone into in the spout.

4. The VDA-sized pouch battery module according to claim 1, wherein: the top and the bottom of heat conduction box (5) be equipped with recess (5 a), the top and the bottom of metal crate (8) be equipped with bar structure (8 b), bar structure (8 b) embedding recess (5 a) is interior.

5. The VDA-sized pouch battery module according to claim 1, wherein: end plate (1) bottom be equipped with a plurality of buckles (1 c), end plate (1) both sides are equipped with metal connecting piece (1 b) of moulding plastics, buckle (1 c) and draw-in groove (8 a) joint of metal crate (8) are passed through to the bottom of end plate (1), metal connecting piece (1 b) and metal crate (8) welded connection are passed through to the both sides of end plate (1).

6. A VDA-sized pouch battery module according to claim 1 or 5, wherein: the end plate (1) is injected with two metal round pipe inserts (1 a).

7. A VDA-sized pouch battery module according to claim 1, 4 or 5, wherein: the top and the bottom of the metal frame (8) are provided with hollow structures.

8. The VDA-sized pouch battery module according to claim 1, wherein: the positive busbar (6), the negative busbar (3), the flexible printed circuit board (2) and the busbar support assembly (4) are fixed by bolts.

9. The VDA-sized pouch battery module according to claim 1, wherein: the number of the battery cores is 12.

10. The VDA-sized pouch battery module according to claim 1, wherein: the busbar supporting component (4) is of a busbar supporting and busbar integrated injection molding structure.