CN212967876U

CN212967876U - Battery pack

Info

Publication number: CN212967876U
Application number: CN202022137170.8U
Authority: CN
Inventors: 胡依林; 司马惠泉; 陈亚东; 郝焱
Original assignee: Jiangsu Xiaoniu Electric Technology Co ltd
Current assignee: Jiangsu Xiaoniu Electric Technology Co ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-04-13
Anticipated expiration: 2030-09-25

Abstract

The utility model belongs to the technical field of batteries and discloses a battery pack, which comprises a shell; the battery module is fixedly arranged in the shell, and both sides of the battery module are provided with nickel sheet welding surfaces; the radiating assembly comprises a first heat-conducting plate and an aluminum block, the first heat-conducting plate is attached to the nickel sheet welding surface, one side of the aluminum block is attached to the first heat-conducting plate, and the other side of the aluminum block is attached to the inner wall of the shell. Through the whole nickel piece face of weld laminating radiator unit in battery module both sides, radiator unit includes first heat-conducting plate and aluminium piece, the laminating of first heat-conducting plate is on the nickel piece face of weld, the first heat-conducting plate of one side laminating of aluminium piece, the inner wall of battery package casing is laminated to the opposite side of aluminium piece, the heat that the battery module produced is transmitted to the casing of battery package through first heat-conducting plate and aluminium piece by whole nickel piece face of weld uniformly, the radiating effect is better, and radiator unit simple structure, high durability and convenient installation, and occupation space is little.

Description

Battery pack

Technical Field

The utility model relates to a battery technology field especially relates to a battery package.

Background

The lithium ion power battery has the characteristics of high specific capacity, small self-discharge, wide working temperature range, high voltage platform, long cycle life, no memory effect, environmental friendliness and the like, and is more and more widely applied in the field of electric vehicles.

Now along with the increase of electric motor car to battery package charge-discharge capacity demand, the battery package is worked under higher temperature environment for a long time, seriously influences the cycle life of battery package, influences the normal use of electric motor car, and the heat radiation structure of current battery package sets up reasonable inadequately, leads to the heat to distribute away through heat radiation structure uniformly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery pack, the heat radiation structure of this battery pack sets up rationally, can make the heat of battery pack distribute away through heat radiation structure uniformly.

To achieve the purpose, the utility model adopts the following technical proposal: a battery pack, comprising:

a housing;

the battery module is arranged in the shell, and both sides of the battery module are provided with nickel sheet welding surfaces;

the radiating assembly comprises a first heat-conducting plate and an aluminum block, the first heat-conducting plate is attached to the nickel sheet welding surface, one side of the aluminum block is attached to the first heat-conducting plate, and the other side of the aluminum block is attached to the inner wall of the shell.

Preferably, a second heat conduction plate is arranged between the aluminum block and the inner wall of the shell.

Preferably, one end of the aluminum block, corresponding to the inner wall of the shell, is provided with a plurality of first sawteeth arranged at intervals, the other end of the aluminum block, corresponding to the inner wall of the shell, is provided with a plurality of second sawteeth arranged at intervals, and the first sawteeth are positioned between every two adjacent second sawteeth.

Preferably, the second heat-conducting plate is arranged between the first sawteeth and the second sawteeth, two surfaces of the second heat-conducting plate are respectively provided with a first groove and a second groove, the first groove is meshed with the first sawteeth, and the second groove is meshed with the second sawteeth.

Preferably, the first saw tooth and the second saw tooth have a rectangular tooth shape, a trapezoidal tooth shape, or a triangular tooth shape.

Preferably, the heat dissipation assembly is fixed to the side wall of the battery module by bolts.

Preferably, the battery module has a plurality ofly, and adjacent two the battery module is fixed in T shape installed part, T shape installed part is fixed in the casing is a plurality of the battery module is inboard nickel piece welding face with the laminating of T shape installed part, it is a plurality of the battery module outside nickel piece welding face with the laminating of first heat-conducting plate.

Preferably, a plurality of the battery module is inboard the nickel piece face of weld with be equipped with the third heat-conducting plate between the installed part of T shape, one side of third heat-conducting plate with a plurality of the battery module is inboard the laminating of nickel piece face of weld, the opposite side of third heat-conducting plate with the laminating of installed part of T shape.

Preferably, the housing and the T-shaped mounting member are made of aluminum.

The utility model has the advantages that: the utility model provides a battery pack, through the whole nickel sheet face of weld laminating radiator unit in battery module both sides, radiator unit includes first heat-conducting plate and aluminium piece, the laminating of first heat-conducting plate is on the nickel sheet face of weld, the first heat-conducting plate of one side laminating of aluminium piece, the inner wall of the opposite side laminating battery pack casing of aluminium piece, the heat that the battery module produced is transmitted to the casing of battery pack through first heat-conducting plate and aluminium piece uniformly by whole nickel sheet face of weld, the radiating effect is better, and radiator unit simple structure, high durability and convenient installation, and occupation space is little.

Drawings

Fig. 1 is a cross-sectional view of a battery pack of the present invention;

fig. 2 is a schematic view of the battery module and the heat dissipation assembly of the battery pack of the present invention.

In the figure: 1. a housing; 2. a battery module; 21. welding surfaces of nickel sheets; 3. a heat dissipating component; 31. a first heat-conducting plate; 32. an aluminum block; 4. a T-shaped mounting member; 5. a third heat-conducting plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The utility model provides a battery pack for the power battery of electric motor car, the heat radiation structure of this battery pack sets up rationally, and the heat of battery pack can distribute away through heat radiation structure uniformly, explains with specific embodiment below the utility model discloses an above-mentioned battery pack.

The battery pack that this embodiment provided, as shown in fig. 1, this battery pack includes casing 1, battery module 2 and radiator unit 3, wherein, casing 1 is used for holding battery module 2, battery module 2 sets firmly in casing 1, be used for providing the electric energy, battery module 2's both sides all are equipped with nickel piece face of weld 21, radiator unit 3's one side is fixed to be laminated in whole nickel piece face of weld 21, radiator unit 3's opposite side and casing 1's inner wall laminating, the heat that battery module 2 produced is transmitted to radiator unit 3 by whole nickel piece face of weld 21 uniformly, then the heat is transmitted to casing 1 back and is distributed away through casing 1 uniformly by radiator unit 3.

In this embodiment, as shown in fig. 1, the battery module 2 may be fixed in the housing 1 by bolts, so that the stability of fixing the battery module 2 can be ensured, and the battery module is convenient to disassemble and assemble. It can be understood that, battery module 2 can also be fixed in casing 1 through the buckle, can guarantee the stability that battery module 2 is fixed equally, and easy dismounting.

In this embodiment, as shown in fig. 1, the heat dissipation assembly 3 includes a first heat conduction plate 31 and an aluminum block 32, the first heat conduction plate 31 is attached to the nickel sheet welding surface 21, one side of the aluminum block 32 is attached to the first heat conduction plate 31, the other side of the aluminum block 32 is attached to the inner wall of the casing 1, the first heat conduction plate 31 is attached to the whole nickel sheet welding surface 21, the heat generated by the battery module 2 can be uniformly transferred to the first heat conduction plate 31, the heat is uniformly transferred to the aluminum block 32 through the first heat conduction plate 31, and finally the heat is uniformly transferred to the casing 1 from the aluminum block 32 and then is dissipated. Further, be equipped with the second heat-conducting plate between the inner wall of aluminium pig 32 and casing 1, can be favorable to the heat to transmit to casing 1 from aluminium pig 32 to can fasten battery module 2, prevent that battery module 2 from rocking.

As preferred technical scheme, as shown in FIG. 1, the one end of aluminium pig 32 corresponding to the inner wall of casing 1 is equipped with the first sawtooth that a plurality of intervals set up, is equipped with the second sawtooth that a plurality of intervals set up on the inner wall of casing 1 corresponding to aluminium pig 32, and first sawtooth is located between two adjacent second sawteeth, through sawtooth cooperation structure, when reducing aluminium pig 32 quality, can guarantee that the heat can be well from aluminium pig 32 transmission to casing 1. Further, the second heat-conducting plate sets up between first sawtooth and second sawtooth, and the two sides of second heat-conducting plate are equipped with first recess and second recess respectively, first recess and first sawtooth meshing, second recess and second sawtooth meshing to make first sawtooth and second sawtooth pass through the seamless contact of second heat-conducting plate, can realize on the one hand that the connection of aluminium pig 32 and casing 1 is fixed, on the other hand has improved heat conduction efficiency. For example, the first saw tooth and the second saw tooth may be rectangular teeth, it is understood that the first saw tooth and the second saw tooth may also be trapezoidal teeth, and it is also understood that the first saw tooth and the second saw tooth may also be triangular teeth, which can make the engagement of the first saw tooth and the second saw tooth more stable, and thus make the connection between the aluminum block 32 and the housing 1 more stable.

In other embodiments, when battery module 2 has a plurality ofly, two adjacent battery modules 2 are fixed in T shape installed part 4, T shape installed part 4 is fixed in casing 1, the inboard nickel piece welding face 21 of a plurality of battery modules 2 and the laminating of T shape installed part 4, the nickel piece welding face 21 in a plurality of battery modules 2 outside is laminated with first heat-conducting plate 31, when guaranteeing that the heat of a plurality of battery modules 2 passes through the even heat dissipation of nickel piece welding face 21 in the outside through radiator unit 3, the heat of a plurality of battery modules 2 can also be through the heat dissipation of the inboard nickel piece welding face 21 through T shape installed part 4. Further, be equipped with third heat-conducting plate 5 between the inboard nickel piece face of weld 21 of a plurality of battery module 2 and the T shape installed part 4, one side of third heat-conducting plate 5 and the inboard nickel piece face of weld 21 laminating of a plurality of battery module 2, the opposite side and the T shape installed part 4 laminating of third heat-conducting plate 5 are favorable to battery module 2's heat transfer to T shape installed part 4 through setting up third heat-conducting plate 5.

In this embodiment, the heat dissipation assembly 3 is fixed on the side wall of the battery module 2 through the bolts, so that the tightness of the fit between the heat dissipation assembly 3 and the battery module 2 is ensured, and the heat is transferred from the battery module 2 to the heat dissipation assembly 3.

Preferably, the material of the housing 1 and the T-shaped mounting member 4 is aluminum, which facilitates heat conduction and is light in weight.

Can see through above-mentioned embodiment, the battery package that this embodiment provided, it is through the first heat-conducting plate 31 of whole nickel piece face of weld 21 laminating in battery module 2 both sides, the one side laminating of aluminium piece 32 is at first heat-conducting plate 31, the opposite side laminating of aluminium piece 32 is at the inner wall of battery package casing 1, can transmit the heat that battery module 2 produced to the casing 1 of battery package through first heat-conducting plate 31 and aluminium piece 32 by whole nickel piece face of weld 21, the radiating effect is better, and radiator unit 3 simple structure, and convenient for installation, occupation space is little.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery pack, comprising:

a housing (1);

the battery module (2) is arranged in the shell (1), and both sides of the battery module are provided with nickel sheet welding surfaces (21);

radiator unit (3), radiator unit (3) include first heat-conducting plate (31) and aluminium pig (32), first heat-conducting plate (31) is laminated on nickel piece bonding surface (21), one side laminating of aluminium pig (32) is in on the first heat-conducting plate (31), the opposite side laminating of aluminium pig (32) the inner wall of casing (1).

2. The battery pack according to claim 1, wherein a second heat conducting plate is provided between the aluminum block (32) and the inner wall of the case (1).

3. The battery pack according to claim 2, wherein a plurality of first sawteeth are arranged at intervals on one end of the aluminum block (32) corresponding to the inner wall of the shell (1), a plurality of second sawteeth are arranged at intervals on the inner wall of the shell (1) corresponding to the aluminum block (32), and the first sawteeth are positioned between two adjacent second sawteeth.

4. The battery pack according to claim 3, wherein the second heat-conducting plate is disposed between the first and second saw-teeth, and both surfaces of the second heat-conducting plate are respectively provided with a first groove engaged with the first saw-teeth and a second groove engaged with the second saw-teeth.

5. The battery pack according to claim 4, wherein the first saw-teeth and the second saw-teeth are rectangular teeth, trapezoidal teeth, or triangular teeth in shape.

6. The battery pack according to claim 1, wherein the heat dissipation member (3) is fixed to the side wall of the battery module (2) by bolts.

7. The battery pack according to claim 1, wherein the battery modules (2) are plural, two adjacent battery modules (2) are fixed to a T-shaped mounting member (4), the T-shaped mounting member (4) is fixed to the case (1), the nickel sheet welding surfaces (21) on the inner sides of the plural battery modules (2) are attached to the T-shaped mounting member (4), and the nickel sheet welding surfaces (21) on the outer sides of the plural battery modules (2) are attached to the first heat conducting plate (31).

8. The battery pack according to claim 7, wherein a third heat-conducting plate (5) is provided between the nickel plate welding surface (21) inside the plurality of battery modules (2) and the T-shaped mounting member (4), one side of the third heat-conducting plate (5) is attached to the nickel plate welding surface (21) inside the plurality of battery modules (2), and the other side of the third heat-conducting plate (5) is attached to the T-shaped mounting member (4).

9. Battery pack according to claim 7, characterized in that the material of the housing (1) and the T-shaped mounting (4) is aluminium.