CN212991202U

CN212991202U - Isolator assembly and battery module

Info

Publication number: CN212991202U
Application number: CN202021286695.1U
Authority: CN
Inventors: 马豪; 杨慧杰; 李宏太; 颜廷露; 刘军辉
Original assignee: China Aviation Lithium Battery Research Institute Co Ltd
Current assignee: AVIC Innovation Technology Research Institute (Jiangsu) Co.,Ltd.
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-04-16
Anticipated expiration: 2030-07-03

Abstract

The application relates to the field of batteries and discloses a separator assembly and a battery module. A separator plate assembly comprising: the isolation plate is suitable for being arranged on the surface of the battery pack, and a first groove used for accommodating the lead terminal is arranged on one side, away from the battery pack, of the isolation plate. The isolation plate assembly can solve the problem that a lead terminal in a battery module is easily worn or damaged.

Description

Isolator assembly and battery module

Technical Field

The application relates to the field of batteries, in particular to a separator assembly and a battery module.

Background

In the battery module, in order to acquire information such as temperature and voltage of the battery pack, a flexible circuit board is generally required to be arranged on a separation plate, and the acquisition of the information such as the temperature and the voltage of the battery module is realized by utilizing the flexible circuit board and a temperature measuring element, a pressure measuring element and the like arranged on the flexible circuit board. The flexible circuit board outputs the collected temperature information, voltage information and the like through the lead terminal. At present, in the existing battery module, when the lead terminal is mounted, a protective structure is absent around the lead terminal, and the lead terminal is easily worn or damaged, thereby affecting the service life of the lead terminal.

SUMMERY OF THE UTILITY MODEL

The application discloses division board assembly and battery module for solve the easy problem of wearing and tearing or damaging of lead terminal among the battery module.

In order to achieve the purpose, the application provides the following technical scheme:

an isolator plate assembly comprising:

the isolation plate is suitable for being arranged on the surface of the battery pack, and a first groove used for accommodating the lead terminal is formed in one side, away from the battery pack, of the isolation plate.

The utility model provides a battery module sets up the first recess that is used for holding the lead terminal on the division board, and the cell wall of first recess can regard as the protection component of lead terminal, avoids the lead terminal to receive wearing and tearing and takes place to damage.

Drawings

FIG. 1 is a schematic exploded view of an isolator plate assembly according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a partition board assembly according to an embodiment of the present disclosure;

FIG. 3 is an exploded view of an isolator plate assembly and an upper cover plate according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of an assembly structure of the isolation plate assembly and the upper cover plate according to an embodiment of the present disclosure;

reference numerals: 1-a separator plate assembly; 11-a separator plate; 111-a first recess; 112-a first opening; 113-a second groove; 114-a second opening; 12-lead terminal; 13-a flexible circuit board; 131-a circuit board body; 132-an extension; 14-a conductive bar; 15-conductive connections; 16-a temperature measuring element; 2-upper cover plate; 21-reinforcing ribs.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

For ease of understanding, several concepts are first introduced:

a battery pack: the battery management system comprises at least one battery module, a battery system distribution box, an electrical connector and the like.

The battery module: the battery pack comprises at least one battery pack, a high-low voltage connector connected with the battery pack, an isolation plate, a conductive bar arranged on the isolation plate, a temperature measuring element used for detecting the temperature of the battery pack and other components.

A battery pack: the battery pack is composed of a plurality of battery cells arranged side by side, wherein the number of the battery cells is at least two.

The battery monomer: the battery comprises a positive electrode, a negative electrode, a diaphragm arranged between the positive electrode and the negative electrode, electrolyte filled among the positive electrode, the negative electrode and the diaphragm, and an outer packaging film. The battery cell is a basic working unit that converts chemical energy into electrical energy, and can independently supply power to the outside.

Fig. 1 is an exploded view of a barrier panel assembly 1 according to an embodiment of the present invention, and fig. 2 is a structural view of the barrier panel assembly 1 according to an embodiment of the present invention. As shown in fig. 1 and fig. 2, an isolation plate assembly 1 according to an embodiment of the present disclosure includes an isolation plate 11 and lead terminals 12, where the isolation plate is suitable for being disposed on a surface of a battery pack in the battery module, one side of the isolation plate 11, which is used for being away from the battery pack, is provided with a first groove 111, and the lead terminals 12 are disposed in the first groove 111. As an exemplary illustration, the lead terminal 12 may be a low voltage connector.

According to the battery module, the first groove 111 is formed in the isolation plate 11, the lead terminal 12 is arranged in the first groove 111, when the battery module oscillates, the groove wall of the first groove 111 can serve as a protection component of the lead terminal 12, and the lead terminal 12 is prevented from being worn and damaged.

It should be noted that the first groove 111 has a groove bottom and a groove wall. The groove wall is formed by protruding outwards from the surface of the groove bottom. When assembling the battery module, the separator 11 is disposed as an electrically insulating separator on the surface of the battery pack of the battery module, so that the lead terminals 12 and the battery pack are arranged in an up-down direction (Z direction as shown in fig. 1) in an insulating manner.

In addition, referring to fig. 1, in addition to the above structure, the isolation plate assembly 1 in the embodiment of the present application further includes a conductive bar 14, where the conductive bar 14 is disposed on two sides of the first groove 111, and is used to connect the poles of the battery cells in the battery pack, so as to implement series-parallel connection between different battery cells. Wherein the separator 11 is also used to achieve an insulating arrangement between the different conductive bars 14 when assembling the battery module.

In one embodiment of the present application, the height of the groove wall of the first groove 111 is higher than the height of the lead terminal 12. In this structure, the lead terminal 12 can be completely disposed in the first recess 111, and the lead terminal 12 is completely protected by the groove wall, thereby preventing the lead terminal 12 from being worn due to shaking.

Referring to fig. 1, in one embodiment of the present application, a first groove 111 is disposed along a length direction (X direction as shown in fig. 1) of a partition plate 11, and lead terminals 12 are disposed at ends of the first groove 111. The first groove 111 is formed along the length of the partition plate 11, so that the flexible printed circuit 13 can be conveniently mounted without affecting the arrangement of the conductive bars 14. The lead terminals 12 are disposed in the end direction to be connected with an external preset device.

The isolation board assembly 1 of the embodiment of the present application further includes a flexible circuit board 13 besides the above structure, wherein the flexible circuit board 13 is disposed in the first groove 111 and connected to the lead terminal 12. The flexible circuit board 13 includes a circuit board main body 131 and a plurality of extending portions 132 connected to the circuit board main body 131, the circuit board main body 131 extends along the length direction of the isolation plate 11, and the extending portions 132 extend from the circuit board main body 131 to the direction of the battery post. Wherein each extension 132 is used to connect with the battery pack through the conductive bar 14. The flexible circuit board 13 is disposed in the first groove 111, so that the flexible circuit board 13 can be effectively protected and the flexible circuit board 13 can be prevented from being damaged.

Referring to fig. 1, in one embodiment of the present application, the height of the groove wall of the first groove 111 is higher than the height of the flexible circuit board 13 in the height direction (the Z direction shown in fig. 1). The height of the flexible printed circuit 13 is understood to be the thickness of the flexible printed circuit 13. In this structure, the flexible circuit board 13 may be completely disposed in the first groove 111 to realize the safety protection of the flexible circuit board 13 and avoid the flexible circuit board from being worn.

Referring to fig. 1, in one embodiment of the present application, the groove wall of the first groove 111 is provided with at least one first opening 112, and at least one extension portion 132 of the flexible circuit board 13 passes through the first opening 112 to be connected with the conductive bar 14 disposed on the surface of the battery pack, so as to electrically connect the flexible circuit board 13 with the battery pack.

In one embodiment of the present application, the extension 132 is connected to the conductive connecting member 15, and the extension 132 is connected to the conductive bar 14 through the conductive connecting member 15, so as to electrically connect the flexible circuit board 13 to the battery pack. The conductive connecting member 15 may be a nickel plate, for example. The current conduction can be realized through the conductive connecting piece 15, and the flexible circuit board 13 can realize the collection of the voltage signal of the battery pack by using the conductive connecting piece and output the collected voltage signal to the outside through the lead terminal 12.

With continued reference to fig. 1, in order to effectively protect the extension portion 132 outside the first groove 111, the isolation board 11 is provided with a second groove 113, and the extension portion 132 of the flexible circuit board 13 extends into the second groove 113 through the first opening 112, at this time, a part of the extension portion 132 is disposed in the second groove 113. In this structure, the first groove 111 and the second groove 113 communicate through the first opening 112. In this embodiment, the second grooves 113 are disposed on two sides of the first groove 111, wherein the second grooves 113 may be multiple, and the first opening 112 may be disposed between each second groove 113 and the first groove 111.

It should be noted that the second groove 113 also includes a groove bottom and a groove wall, in the embodiment of the present application, the height of the groove wall of the second groove 113 may be higher than the height of the extension portion 132, so that the extension portion 132 is completely located in the second groove 113 in the height direction of the second groove 113.

When the second groove 113 is provided, in order to connect the conductive connecting member 15 with the conductive bar 14, at least one second opening 114 is provided on a wall of the second groove 113, and the conductive connecting member 15 is connected to the conductive bar 14 from the extending portion 132 of the flexible circuit board 13 through the second opening 114, so as to connect with the battery pack.

In the separator assembly 1 of the embodiment of the present application, besides the above structure, a Temperature measuring element 16, such as an NTC (Negative Temperature Coefficient) Temperature measuring element, may be disposed on a part of the extension portion 132 of the flexible circuit board 13, so as to collect the Temperature of the battery pack. When the temperature measuring element 16 is provided, the temperature measuring element 16 can be provided on the extended portion 132, and the temperature measuring element 16 can be connected to the electrically conductive connecting member 15. When the temperature measuring element 16 is connected to the conductive connection member 15, the temperature measuring element 16 can indirectly measure the temperature of the battery pack through the thermal conductivity of the conductive connection member 15. The flexible circuit board 13 outputs the temperature information collected by the temperature measuring element 16 to the outside through the lead terminal 12.

Wherein, in order to effectively protect the temperature measuring element 16, the height of the groove wall of the second groove 113 is larger than that of the temperature measuring element 16.

The utility model provides an isolator assembly 1, through setting up first recess 111 and second recess 113, with lead terminal 12, flexible circuit board 13, electrically conductive connecting piece 15 or temperature measurement subassembly set up respectively in first recess 111 or second recess 113, and make the cell wall height of first recess 111 and second recess 113 all be greater than lead terminal 12, flexible circuit board 13, electrically conductive connecting piece 15, the height of parts such as temperature measurement component 16, thereby can make lead terminal 12, flexible circuit board 13, electrically conductive connecting piece 15 and temperature measurement subassembly are in first recess 111 or second recess 113 safety protection space completely in the direction of height, avoid battery module to lead terminal 12 because of operating modes such as vibration, flexible circuit board 13, electrically conductive connecting piece 15 or temperature measurement component 16 cause the damage, improve battery module's security, user's use risk is reduced.

Based on the same inventive concept, the embodiment of the application provides a battery module. The battery module includes a battery pack and a separator assembly 1. Wherein, the group battery includes the battery monomer that the multiunit set up side by side. The isolation plate assembly 1 is arranged above the battery pack, and the lead terminal 12 is arranged on one side of the isolation plate 11, which is far away from the battery pack. In this structure, the separator 11 is located between the lead terminals 12 and the battery pack.

In one embodiment of the present application, the battery module includes an upper cap plate 2. Fig. 3 is an exploded schematic view of a positional relationship between the isolation plate assembly 1 and the upper cover plate 2 according to an embodiment of the present disclosure, and fig. 4 is an assembly schematic view of the isolation plate assembly 1 and the upper cover plate 2 according to an embodiment of the present disclosure. As shown in fig. 3, and as shown in fig. 4, the upper cover plate 2 may be fixedly coupled with the partition plate 11. As shown in fig. 3, an upper cover plate 2 is provided on a side of the partition plate 11 away from the battery pack, and the upper cover plate 2 is used to protect the partition plate assembly 1 from being damaged by extrusion or the like, while preventing dust and impurities from entering the partition plate assembly 1.

In one embodiment of the present application, as shown in fig. 4, a rib 21 is provided on a side of the upper cover plate 2 close to the partition plate 11, the rib 21 extends from a surface of the upper cover plate 2 toward the partition plate 11, and at least a portion of the rib 21 is disposed corresponding to a groove wall of the first groove 111.

By arranging the reinforcing ribs 21 on the upper cover plate 2, on one hand, the structural rigidity of the upper cover plate 2 can be improved, and the impact resistance and pressure resistance of the upper cover plate can be improved. On the other hand, by providing the reinforcing ribs 21 and arranging at least a part of the reinforcing ribs 21 in one-to-one correspondence with the first grooves 111, a square frame-shaped accommodating space can be formed between the upper cover plate 2 and the partition plate 11, the square frame-shaped accommodating space being constituted by the plate surface of the upper cover plate 2, the reinforcing ribs 21 of the upper cover plate 2, the groove bottom of the first grooves 111, and the groove walls of the first grooves 111. When the upper cover plate 2 is deformed by an impact force, the extrusion force of the deformation of the upper cover plate 2 to the lead terminals 12 arranged therein can be buffered due to the existence of the square-frame-shaped accommodation space, and the damage of the upper cover plate 2 to the lead terminals 12 caused by the deformation is reduced.

In order to achieve the same protection effect for the extension portion 132 of the flexible circuit board 13, the temperature measuring element 16 and the conductive connecting member 15, in one embodiment of the present application, at least a portion of the reinforcing rib 21 is disposed corresponding to the groove wall of the second groove 113.

In this structure, a square frame-shaped receiving space can also be formed between the second groove 113 and the upper cover 2 to further protect the extension portion 132 of the flexible circuit board 13, the temperature measuring element 16 and the conductive connecting member 15 from being pressed by the upper cover 2. Through set up on upper cover plate 2 in the strengthening rib 21 of mutually supporting of the cell wall of first recess 111 and second recess 113, can make the battery module of this structure have better shock resistance, improve the adaptability of battery module in adverse circumstances.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. An isolator plate assembly, comprising:

2. The barrier panel assembly according to claim 1, wherein the first groove is provided along a length direction of the barrier panel, and the lead terminal is provided at an end of the first groove.

3. The isolator plate assembly of claim 2 including a flexible circuit board disposed in said first recess and connected to said lead terminals.

4. The isolator plate assembly of claim 3 wherein the slot wall of said first recess defines at least one first opening through which passes at least one extension of said flexible circuit board, wherein said extension is adapted to be coupled to a battery pack.

5. The isolator plate assembly of claim 4 wherein said extension portion has a temperature measuring element thereon, said isolator plate has a second recess, said temperature measuring element and at least a portion of said extension portion are disposed in said second recess, and said first recess and said second recess are in communication through said first opening.

6. The isolator plate assembly of claim 5 wherein said extension is connected to said battery pack by an electrically conductive connector;

the side wall of the second groove is provided with at least one second opening, one part of the conductive connecting piece penetrates through the second opening to be connected with the extending part, and the other part of the conductive connecting piece is connected with the battery pack.

7. The isolator plate assembly of any one of claims 1-6 wherein the height of the walls of said first recess is greater than the height of the tallest of said lead terminal, flexible circuit board, temperature sensing element or conductive connector.

8. A battery module, comprising:

the battery pack comprises a plurality of battery monomers which are arranged side by side;

the separator assembly of any of claims 1-7, disposed over the battery pack, the lead terminals being located on a side of the separator opposite the battery pack.

9. The battery module according to claim 8, wherein the battery module comprises an upper cover plate disposed above the separator, a reinforcing rib is disposed on a side of the upper cover plate adjacent to the separator, the reinforcing rib extends from a surface of the upper cover plate toward the separator, and at least a portion of the reinforcing rib is disposed corresponding to a groove wall of the first groove.

10. The battery module according to claim 9, wherein at least some of the ribs are disposed to correspond to the groove walls of the second grooves.