CN213660572U

CN213660572U - Battery pack

Info

Publication number: CN213660572U
Application number: CN202023146419.8U
Authority: CN
Inventors: 亢策策
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-07-09
Anticipated expiration: 2030-12-23

Abstract

The utility model relates to a battery pack, including copper bar (3) and battery module (8), its characterized in that, the copper bar (3) process the length L of the part of battery module (8) satisfies relational expression b is no less than L is no less than 2a + b, wherein, a is the length of battery module (8), b is the width of battery module (8). Through above-mentioned technical scheme, the battery package that this disclosure provided can solve the copper bar and the extravagant technical problem in space that the battery module is not convenient for assemble and leads to.

Description

Battery pack

Technical Field

The disclosure relates to the field of power battery packs, in particular to a battery pack.

Background

The battery module is the energy storage unit of power battery package, and the battery package passes through battery module storage electric energy to go out through battery module with electric energy transmission when whole car needs. The battery module comprises a plurality of battery cores, and the battery cores are fixedly packaged together through the same shell frame or a binding belt and are contacted with the outside through a unified boundary. Because the battery module is generally constructed as an integral module, the battery pack copper bar cannot be arranged above the battery module.

When the copper bar needs to be arranged to the battery package, can only fix the copper bar through arranging the copper bar fixed bolster in battery module top, cause the waste in cost and space.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery pack to solve the technical problem that copper bar and battery module are not convenient for assemble the space waste that leads to.

In order to achieve the above object, the present disclosure provides a battery pack, which includes a copper bar and a battery module, wherein a length L of a portion of the copper bar passing through the battery module satisfies a relation b ≤ L ≤ 2a + b, where a is a length of the battery module, and b is a width of the battery module.

Optionally, the battery module includes at least one battery cell unit stacked in a horizontal direction and at least one fixing device for mounting the copper bar, the fixing device has a through channel capable of being penetrated by the copper bar, an extending direction of the through channel is perpendicular to the arrangement directions of the battery cell unit and the fixing device, and a width of the fixing device is the same as a width of the battery module.

Optionally, the number of the battery cell units is at least two, the fixing device is disposed between two adjacent battery cell units, and the battery module further includes a CCS assembly bridging tops of two adjacent battery cell units.

Optionally, the battery cell unit includes one battery cell or a plurality of battery cells stacked together, and the arrangement direction of the plurality of battery cells is the same as the arrangement direction of the battery cell unit and the fixing device.

Optionally, the relation between the thickness of the fixing device and the thickness of the battery cell satisfies D1 ═ nD2, where n is an integer greater than 0, D1 is the thickness of the fixing device, and D2 is the thickness of the battery cell.

Optionally, the CCS assembly is welded above the cell unit.

Optionally, the through passage comprises a through slot formed in a top portion of the fixture; the CCS assembly is formed into a concave U-shaped portion at a position corresponding to the fixing device, an avoiding groove used for containing the U-shaped portion is formed in the top of the fixing device, the extending direction of the avoiding groove is perpendicular to the through groove, and the groove bottom of the avoiding groove is lower than that of the through groove, so that the copper bars are arranged above the CCS assembly at intervals.

Optionally, the CCS assembly includes a busbar connected to the electric core unit and an FPC connected to the busbar, the FPC is bonded to the fixing device, and the busbar is attached to the fixing device.

Optionally, the method further comprises: the upper cover is covered and arranged above the battery cell unit, the fixing device and the copper bar; the binding belt is circumferentially wrapped on the outer side of an integrated structure formed by the battery cell unit and the fixing device; and an end plate, wherein the end plate is fixed on the outer end face of the cell unit in the arrangement direction of the cell unit and the fixing device.

Optionally, the upper cover is riveted over the bus bar.

Through above-mentioned technical scheme, the copper bar in the battery package that this disclosure provided when assembling in battery module, need from one side to the opposite side of battery module, and the shortest distance from battery module one side to the opposite side is b, and at this moment, the copper bar need stride across battery module along the width direction of battery module, and the longest distance from battery module one side to the opposite side is 2a + b, and at this moment, the copper bar need extend around the periphery of battery module. And because the copper bar satisfies that b is less than or equal to L and is less than or equal to 2a + b through the length L of battery module, consequently, in the battery package that this disclosure provided, the copper bar can laminate the battery module and extend and reach the opposite side from one side of battery module to avoid the copper bar to occupy the exterior space of battery module, thereby can make the space in the battery package by rational utilization, reduce the space waste.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic structural view of a battery pack according to an embodiment of the present disclosure;

fig. 2 is an exploded view of fig. 1.

Description of the reference numerals

1-fixing device, 11-through channel, 111-through groove, 12-avoidance groove, 2-cell unit, 21-cell, 3-copper bar, 4-CCS component, 41-bus bar, 42-FPC, 43-U-shaped part, 5-upper cover, 6-binding belt, 7-end plate and 8-battery module.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, the use of the terms of orientation such as "upper and lower" generally means that the battery pack is fitted to the vehicle body and is in the upper and lower positions in the normal use state, and "inner and outer" means inner and outer with respect to the profile of the corresponding component part itself.

According to an embodiment of the present disclosure, referring to fig. 1 and 2, a battery pack is provided, which may include a copper bar 3 and a battery module 8, wherein a length L of a portion of the copper bar 3 passing through the battery module 8 satisfies a relation b ≦ L ≦ 2a + b, where a is a length of the battery module 8 and b is a width of the battery module 8. The part of the copper bar 3 passing through the battery module 8 refers to the part of the copper bar 3 located between the two opposite sides of the battery module 8 in the width direction.

Through above-mentioned technical scheme, copper bar 3 in the battery package that this disclosure provided need be from one side to the opposite side of battery module 8 when assembling in battery module 8, and the shortest distance from battery module 8 one side to the opposite side is b, and at this moment, copper bar 3 need stride across battery module 8 along the width direction of battery module 8, and the longest distance from battery module 8 one side to the opposite side is 2a + b, and at this moment, copper bar 3 need extend around the periphery of battery module 8. And because the copper bar 3 satisfies that b is less than or equal to L and is less than or equal to 2a + b through the length L of battery module 8, consequently, in the battery package that this disclosure provided, the copper bar 3 can laminate battery module 8 and extend and reach the opposite side from one side of battery module 8 to avoid copper bar 3 to occupy the exterior space of battery module 8, thereby can make the space in the battery package by rational utilization, reduce the space waste.

As shown in fig. 1 and fig. 2, the battery module 8 may include at least one battery cell unit 2 stacked in a horizontal direction and at least one fixing device 1 for mounting the copper bar 3, the fixing device 1 has a through channel 11 capable of being penetrated by the copper bar 3, an extending direction of the through channel 11 is perpendicular to an arrangement direction of the battery cell unit 2 and the fixing device 1, wherein a width of the fixing device 1 is the same as a width of the battery module 8, that is, the width of the fixing device 1 is b. That is to say, fixing device 1 and electric core unit 2's the direction of arranging can follow the length direction of battery module 8, and the extending direction who link up passageway 11 can follow the width direction of battery module 8 for copper bar 3 can pass battery module 8 along the width direction of battery module 8, thereby reduces the length of copper bar 3 through the part of battery module 8, so that the bending of copper bar 3 behind battery module 8.

Referring to fig. 1 and 2, the number of the cell units 2 may be at least two, the fixing device 1 may be disposed between two adjacent cell units 2, and the battery module 8 may further include a CCS assembly 4 bridging tops of two adjacent cell units 2 to electrically connect the two adjacent cell units 2.

As shown in fig. 1 and fig. 2, the battery cell unit 2 may include one battery cell 21 or a plurality of battery cells 21 stacked in layers, the arrangement direction of the battery cells 21 is the same as the arrangement direction of the battery cell unit 2 and the fixing device 1, and the poles of the battery cells 21 are located on the same side of the battery cell unit 2.

In addition, the thickness of fixing device 1 and the thickness relation of battery cell 21 can satisfy D1 ═ nD2, wherein, n is the integer that is greater than 0, and D1 is the thickness of fixing device 1, and D2 is the thickness of battery cell 21, the outline of fixing device 1 can be roughly the same with the outline of battery cell 21 to make fixing device 1 can arrange the position with the battery cell 21 exchange of different positions according to the difference of copper bar 3 demand, under the condition of not changing the external profile of battery module 8, make the arrangement of copper bar 3 more nimble.

In a specific embodiment of the present disclosure, as shown with reference to fig. 1 and 2, the through channel 11 may include a through groove 111 formed at the top of the fixing device 1, so that the copper bar 3 may enter the through groove 111 through a top opening of the through groove 111, thereby facilitating the assembly of the copper bar 3 with the battery module. In order to avoid the copper bars 3 accommodated in the through grooves 111, as shown in fig. 2, the CCS block 4 may be formed as a concave U-shaped portion 43 at a position corresponding to the fixing device 1, the top of the fixing device 1 may be formed with an avoiding groove 12 for accommodating the CCS block 4, an extending direction of the avoiding groove 12 is perpendicular to an extending direction of the through grooves 111 to conform to the extending direction of the CCS block 4 bridging the adjacent cell units 2, and a groove bottom of the avoiding groove 12 is lower than that of the through grooves 111 to allow the copper bars 3 to be spaced above the CCS block 4, thereby facilitating the copper bars 3 to enter the through grooves 111 through a top opening of the through grooves 111.

Furthermore, the CCS assembly 4 may be welded above the cell unit 2. Specifically, referring to fig. 2, the CCS assembly 4 may further include a bus bar 41 connected to the cell unit 2, and an FPC42 connected to the bus bar 41, wherein the bus bar 41 is welded to a pole of each of the cells 21, so that electrical connection is achieved between each of the cells 21 and the bus bar 41, the FPC42 may be adhered to the fixing device 1 by a double-sided adhesive tape, and the bus bar 41 is adhered to the fixing device 1.

In addition, referring to fig. 1 and 2, the battery pack may further include an upper cover 5, a band 6, and an end plate 7, wherein the upper cover 5 is installed above the battery cell unit 2, the fixing device 1, and the copper bar 3 in a covering manner, the band 6 is circumferentially wrapped around an outer side of an integrated structure formed by the battery cell unit 2 and the fixing device 1, so that the battery cell unit 2 and the fixing device 1 are kept stacked on each other without being scattered, and the end plate 7 is fixed on an outer end surface of the battery cell unit 2 in an arrangement direction of the battery cell unit 2 and the fixing device 1, so as to be used for inserting a high-voltage plug-in, a low-.

The upper cover 5 may be riveted above the bus bar 41, so that the upper cover 5 is fixed relative to other structures in the battery pack.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. The battery pack comprises a copper bar (3) and a battery module (8), and is characterized in that the length L of the part of the copper bar (3) passing through the battery module (8) satisfies the relation that b is not less than L and not more than 2a + b, wherein a is the length of the battery module (8) and b is the width of the battery module (8).

2. The battery pack according to claim 1, wherein the battery module (8) comprises at least one cell unit (2) and at least one fixing device (1) for mounting the copper bar (3), the at least one cell unit and the at least one fixing device being stacked in a horizontal direction, the fixing device (1) having a through channel (11) which can be penetrated by the copper bar (3), the through channel (11) extending in a direction perpendicular to the arrangement direction of the cell unit (2) and the fixing device (1), and wherein the fixing device (1) has a width equal to the width of the battery module (8).

3. The battery pack according to claim 2, wherein the number of the cell units (2) is at least two, the fixing device (1) is disposed between two adjacent cell units (2), and the battery module (8) further comprises a CCS assembly (4) bridging the tops of two adjacent cell units (2).

4. The battery pack according to claim 3, wherein the cell unit (2) comprises one cell (21) or a plurality of stacked cells (21), and the arrangement direction of the plurality of cells (21) is the same as the arrangement direction of the cell unit (2) and the fixing device (1).

5. The battery pack according to claim 4, wherein the thickness of the fixture (1) and the thickness of the battery cell (21) satisfy the relationship of D1 ═ nD2, where n is an integer greater than 0, D1 is the thickness of the fixture (1), and D2 is the thickness of the battery cell (21).

6. The battery pack according to claim 3, wherein the CCS assembly (4) is welded above the cell unit (2).

7. A battery pack, according to claim 3, characterized in that said through channel (11) comprises a through slot (111) formed at the top of said fixing means (1);

CCS subassembly (4) is corresponding the position of fixing device (1) forms into recessed U-shaped portion (43), the top of fixing device (1) is formed with and is used for holding dodge groove (12) of U-shaped portion (43), the extending direction perpendicular to of dodging groove (12) link up groove (111), just the tank bottom of dodging groove (12) is less than the tank bottom of link up groove (111), so that copper bar (3) interval sets up the top of CCS subassembly (4).

8. The battery pack according to claim 7, wherein the CCS assembly (4) comprises a bus bar (41) connected with the cell unit (2) and an FPC (42) connected to the bus bar (41), the FPC (42) is adhered to the fixing device (1), and the bus bar (41) is adhered to the fixing device (1).

9. The battery pack according to claim 8, further comprising:

the upper cover (5) is covered and installed above the battery cell unit (2), the fixing device (1) and the copper bar (3);

the binding belt (6) is circumferentially wrapped on the outer side of an integrated structure formed by the battery cell unit (2) and the fixing device (1); and

an end plate (7), wherein the end plate (7) is fixed to an outer end surface of the cell unit (2) in an arrangement direction of the cell unit (2) and the fixing device (1).

10. Battery pack according to claim 9, characterized in that the upper cover (5) is riveted over the busbar (41).