CN218472076U

CN218472076U - Liquid cooling plate, battery module and battery pack

Info

Publication number: CN218472076U
Application number: CN202222547607.4U
Authority: CN
Inventors: 黄立亮
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-02-10
Anticipated expiration: 2032-09-26

Abstract

The utility model belongs to the technical field of the battery, a liquid cooling board, battery module and battery package are disclosed. The liquid cooling plate includes a first cooling plate and a second cooling plate. The first cooling plate is horizontally arranged, the second cooling plate is vertically arranged above the first cooling plate, the first cooling plate is connected with the bottom surface of the battery cell, and the second cooling plate is connected with the side surface of the battery cell. The liquid cooling plate can meet the cooling requirements of the bottom surface and the side surface of the battery cell, and is high in heat conduction efficiency.

Description

Liquid cooling plate, battery module and battery pack

Technical Field

The utility model relates to a battery technology field especially relates to a liquid cooling board, battery module and battery package.

Background

In recent years, in order to improve the energy density of an energy storage system, a battery of a power battery pack generally adopts a square aluminum shell large battery cell, and the battery has the characteristics of high-rate operation and serious heating in the operation process, so that the control of the temperature rise and the heating balance of the battery in the operation becomes a difficult problem which needs to be solved urgently.

At present, the mainstream scheme of battery core cooling in the market is to set up the liquid cooling plate in the bottom surface of electric core, and this kind of structure cooling area is little, heat conduction efficiency is low, can not satisfy the demand of filling soon, and the liquid cooling plate is big plane, and the plane degree is not good to be guaranteed.

Therefore, a liquid cooling plate, a battery module and a battery pack are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

According to the utility model discloses an aspect, the utility model provides a liquid cooling board can satisfy the cooling demand of electric core bottom surface and side, and heat conduction efficiency is high.

To achieve the purpose, the utility model adopts the following technical proposal:

the liquid cooling plate is used for the battery module, the battery module comprises a plurality of battery cores which are arranged side by side, the liquid cooling plate comprises a first cooling plate and a second cooling plate, the first cooling plate is horizontally arranged, the second cooling plate is vertically arranged above the first cooling plate, the first cooling plate is connected with the bottom surface of the battery core, and the second cooling plate is connected with the side surface of the battery core.

Optionally, the first cooling plate and the second cooling plate form an L-shaped liquid cooling plate, the two L-shaped liquid cooling plates are connected to form an inverted T-shaped liquid cooling plate assembly, and the liquid cooling plate assembly is disposed between two adjacent electric cores.

Optionally, a first glue guide groove is formed in the second cooling plate, and the first glue is arranged between the first glue guide groove and the side surface of the battery core.

Optionally, a first glue overflow groove is formed in the top of the second cooling plate; and/or:

and a second glue overflowing groove is formed in the outer edge of the first cooling plate.

Optionally, the first cooling plate and the second cooling plate form the liquid cooling plate of an inverted T-shaped structure, and the liquid cooling plate of an inverted T-shaped structure is disposed between two adjacent battery cells.

Optionally, the lower surface of the first cooling plate is provided with heat dissipation fins.

Optionally, a second glue guide groove is formed in the first cooling plate, and a second glue is arranged between the second glue guide groove and the bottom surface of the battery core; and/or:

and a third glue guide groove is formed in the upper surface of the second cooling plate, and a third glue body is arranged between the third glue guide groove and the side surface of the battery core.

Optionally, a third glue overflow groove is formed in the outer edge of the first cooling plate; and/or:

and the top of the second cooling plate is provided with a fourth glue overflow groove.

Optionally, the lower surface of the first cooling plate is provided with a reinforcing sheet.

Optionally, the lower surface of the first cooling plate is provided with a buffer.

According to the utility model discloses an in another aspect, the utility model provides a battery module, including a plurality of electric cores of arranging side by side and any technical scheme of the aforesaid liquid cooling board.

According to the utility model discloses a still another aspect, the utility model provides a battery pack, including battery box and foretell battery module, be located the most outer fringe first cooling plate with the boundary beam of battery box links to each other.

The utility model has the advantages that:

the utility model provides a liquid cooling board for the battery module, this liquid cooling board includes first cooling plate and second cooling plate. The bottom surface through setting up first cooling plate and electric core links to each other, and the second cooling plate links to each other with the side of electric core for first cooling plate can be for the bottom surface heat dissipation of electric core, and the second cooling plate can be for the side heat dissipation of electric core, and then has satisfied the bottom surface of electric core and the heat dissipation demand of side, and heat conduction efficiency is higher, can satisfy the demand of filling soon of high magnification battery. And the structure has lower requirements on the flatness of the first cooling plate and the second cooling plate, and is convenient to process.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is an exploded view of an assembly view between a liquid cooling plate and a cell bank provided by the present invention;

fig. 2 is a cross-sectional view of a liquid cooling plate assembly according to an embodiment of the present invention;

fig. 3 is an exploded view of a liquid cooling plate assembly according to an embodiment of the present invention;

fig. 4 is an assembly view of a liquid cooling plate assembly according to an embodiment of the present invention;

fig. 5 is an exploded view of an assembly diagram between a liquid cooling plate assembly and a battery cell row group according to an embodiment of the present invention;

fig. 6 is an assembly view between a liquid cooling plate assembly and a battery cell row group according to a first embodiment of the present invention;

fig. 7 is a cross-sectional view of a liquid cooling plate according to a second embodiment of the present invention;

fig. 8 is a schematic structural view of a liquid cooling plate according to a second embodiment of the present invention;

fig. 9 is an exploded view of an assembly view between a liquid cooling plate and a battery cell bank provided in a second embodiment of the present invention;

fig. 10 is a schematic view of a part of a structure of a battery pack according to an embodiment of the present invention;

fig. 11 is a partial enlarged view of fig. 10 at a.

In the figure:

100. a liquid-cooled plate; 110. a first cooling plate; 111. a second glue overflow groove; 112. a heat dissipating fin; 113. a second glue guide groove; 114. a third glue overflow groove; 120. a second cooling plate; 121. a first glue guiding groove; 122. a first glue overflow groove; 123. a liquid inlet; 124. a liquid outlet; 125. a third glue guiding groove; 126. a fourth glue overflow groove; 130. a buffer member;

200. an electric core; 300. a battery box; 310. and (4) edge beams.

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 associated with the present invention are shown in the drawings, not all of them.

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 as a specific case by 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", "left", "right", and the like are used in the orientation or positional relationship 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 specific orientation, be constructed in a specific orientation, and be operated, 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 be limiting.

The utility model provides a liquid cooling board 100 can satisfy the cooling demand of electric core 200 bottom surface and side, and heat conduction efficiency is high.

Specifically, the liquid cooling plate 100 is used for a battery module, and the battery module includes a plurality of battery cells 200 arranged in parallel. As shown in fig. 1, the liquid cooling plate 100 includes a first cooling plate 110 and a second cooling plate 120. The first cooling plate 110 is horizontally disposed, the second cooling plate 120 is vertically disposed above the first cooling plate 110, the first cooling plate 110 is connected to the bottom surface of the battery cell 200, and is configured to dissipate heat from the bottom surface of the battery cell 200, and the second cooling plate 120 is connected to the side surface of the battery cell 200, and is configured to dissipate heat from the side surface of the battery cell 200. Through setting up first cooling plate 110 and second cooling plate 120, satisfied the bottom surface of electric core 200 and the heat dissipation demand of side, improved the heat conduction efficiency of liquid cooling plate 100, can satisfy the demand of filling soon of high rate battery. And the structure has low requirement on the flatness of the first cooling plate 110 and the second cooling plate 120, and is convenient to process. Optionally, the first cooling plate 110 has a first cooling flow channel therein, and/or the second cooling plate 120 has a second cooling flow channel therein, and the first cooling flow channel and the second cooling flow channel may be independent of each other or may be communicated with each other, and may be arranged according to actual needs.

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

Example one

Specifically, as shown in fig. 2 to 6, the first cooling plate 110 and the second cooling plate 120 form an L-shaped structure, the two liquid cooling plates 100 of the L-shaped structure are connected to form an inverted T-shaped liquid cooling plate assembly, and the liquid cooling plate assembly is disposed between two adjacent battery cells 200. The length of the second cooling plate 120 is greater than that of the first cooling plate 110, and the liquid cooling plate 100 with the structure enables the second cooling plate 120 to have a supporting function, so that the structural strength of the battery module can be improved. In the present embodiment, the first cooling plate 110 and the second cooling plate 120 are formed by a stamping process, and the plate thickness is 1-3mm. Of course, in other embodiments, the first cooling plate 110 and the second cooling plate 120 may be made in other manners, and may be arranged according to actual needs.

Further, with reference to fig. 2, in the present embodiment, the connection manner between the liquid cooling plate 100 and the battery cell 200 is adhesion. Specifically, a first glue guide groove 121 is formed in the second cooling plate 120, and the first glue is disposed in the first glue guide groove 121, so that the second cooling plate 120 is bonded to the side surface of the battery cell 200. First colloid is heat-conducting glue, can give second cooling plate 120 with the heat of electricity core 200 fast transfer, and then has improved the radiating effect of second cooling plate 120. When assembling the battery module, the liquid cooling plate 100 and the battery cell 200 may be connected to form small modules, and then the small modules are assembled.

Preferably, in order to avoid excessive overflow of the first glue, a first glue overflow groove 122 is formed at the top of the second cooling plate 120 for accommodating the overflowing first glue. Similarly, the first cooling plate 110 is connected to the bottom surface of the battery cell 200 by adhesion, and optionally, a second glue overflow groove 111 is formed in an outer edge of the first cooling plate 110 for accommodating the overflowing glue.

Preferably, if the strength of the first cooling plate 110 is not high, a reinforcing plate (not shown) may be disposed on the lower surface of the first cooling plate 110 to increase the strength of the first cooling plate 110 and prevent the first cooling plate 110 from deforming.

Preferably, a buffer 130 is disposed on the lower surface of the first cooling plate 110, which can support the liquid cooling plate 100; on the other hand, the energy absorption can be buffered; on the other hand, the heat preservation function can be achieved.

Further, a liquid inlet 123 and a liquid outlet 124 are arranged on the second cooling plate 120, the liquid inlet 123 and the liquid outlet 124 are both communicated with the second cooling flow channel, and the cooling liquid enters the second cooling flow channel from the liquid inlet 123 and flows out from the liquid outlet 124, so that the circulation of the cooling liquid is realized.

Example two

The present embodiment provides a liquid cooling plate 100, which has substantially the same structure as that of the first embodiment, and is improved on the basis of the first embodiment. Therefore, only the difference between the two embodiments will be described, and the same structure as that of the embodiment will not be described herein again.

Specifically, as shown in fig. 7 to 9, the first cooling plate 110 and the second cooling plate 120 form an inverted T-shaped structure, and the liquid cooling plate 100 of the inverted T-shaped structure is disposed between two adjacent battery cells 200. In the embodiment, the first cooling plate 110 and the second cooling plate 120 are made by an aluminum extrusion process, the thickness of the first cooling plate 110 is 3mm to 6mm, and the width of the first cooling plate 110 is greater than 50mm. Of course, in other embodiments, the first cooling plate 110 and the second cooling plate 120 may be made in other manners, and may be arranged according to actual needs.

Preferably, with continued reference to fig. 7, the heat dissipation fins 112 are disposed on the lower surface of the first cooling plate 110, so as to facilitate further heat dissipation of the first cooling plate 110, and improve the heat dissipation effect of the first cooling plate 110.

Further, in the present embodiment, the first cooling plate 110 and the second cooling plate 120 are both connected to the battery cell 200 by bonding. Specifically, a second glue guide groove 113 is formed in the first cooling plate 110, and the second glue is disposed in the second glue guide groove 113, so as to achieve adhesion between the first cooling plate 110 and the bottom surface of the battery cell 200. The second colloid is heat-conducting glue, and can transmit the heat of the battery cell 200 to the first cooling plate 110 quickly, so that the heat dissipation effect of the first cooling plate 110 is improved. Similarly, a third glue guiding groove 125 is formed in the upper surface of the second cooling plate 120, and a third glue is disposed in the third glue guiding groove 125 to achieve bonding between the second cooling plate 120 and the side surface of the battery cell 200. The third colloid is heat-conducting glue, and can rapidly transfer the heat of the battery cell 200 to the second cooling plate 120, so that the heat dissipation effect of the second cooling plate 120 is improved. When assembling the battery module, the liquid cooling plate 100 and the battery cell 200 may be connected to form small modules, and then the small modules are assembled.

Preferably, in order to prevent the second glue from being smeared too much and overflowing, a third glue overflow groove 114 is formed at the outer edge of the first cooling plate 110 for accommodating the overflowing second glue. Similarly, a fourth glue overflow groove 126 is formed at the top of the second cooling plate 120 for accommodating the third glue overflowing.

EXAMPLE III

The present embodiment provides a battery module, which includes a plurality of battery cells 200 arranged in parallel and the liquid cooling plate 100. The battery module has high heat dissipation.

Preferably, in this embodiment, a plurality of battery cells 200 are sequentially arranged to form a battery cell row group, and one liquid cooling plate 100 is disposed between two adjacent battery cell row groups.

Example four

As shown in fig. 10 and 11, the present embodiment provides a battery pack, which includes a battery box 300 and the battery module, the battery module is disposed in the battery box 300, the battery pack can be used as a replaceable battery pack, and the charging safety performance is high.

Preferably, the first cooling plate 110 located at the outermost edge is connected to the edge beam 310 of the battery case 300. The structural design can improve the structural strength of the battery pack.

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 or 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. The liquid cooling plate is used for a battery module, the battery module comprises a plurality of battery cores (200) which are arranged in parallel, the liquid cooling plate (100) is characterized by comprising a first cooling plate (110) and a second cooling plate (120),

the first cooling plate (110) is horizontally arranged, the second cooling plate (120) is vertically arranged above the first cooling plate (110), the first cooling plate (110) is connected with the bottom surface of the battery cell (200), and the second cooling plate (120) is connected with the side surface of the battery cell (200).

2. The liquid cooling plate of claim 1, wherein the first cooling plate (110) and the second cooling plate (120) form the liquid cooling plate (100) in an L-shaped structure, and the liquid cooling plates (100) in two L-shaped structures are connected to form a liquid cooling plate assembly in an inverted T shape, and the liquid cooling plate assembly is disposed between two adjacent electric cores (200).

3. The liquid cooling plate of claim 2, wherein a first glue guiding groove (121) is formed in the second cooling plate (120), and a first glue is disposed between the first glue guiding groove (121) and the side surface of the battery cell (200).

4. The liquid cooling plate of claim 3, wherein the top of the second cooling plate (120) is provided with a first glue overflow groove (122); and/or:

the outer edge of the first cooling plate (110) is provided with a second glue overflow groove (111).

5. The liquid cooling plate of claim 1, wherein the first cooling plate (110) and the second cooling plate (120) form the liquid cooling plate (100) in an inverted-T structure, and the liquid cooling plate (100) in an inverted-T structure is disposed between two adjacent electric cores (200).

6. Liquid-cooled plate according to claim 5, characterized in that the lower surface of the first cooling plate (110) is provided with heat-dissipating fins (112).

7. The liquid cooling plate of claim 5, wherein a second glue guiding groove (113) is formed in the first cooling plate (110), and a second glue is disposed between the second glue guiding groove (113) and the bottom surface of the battery cell (200); and/or:

and a third glue guide groove (125) is formed in the upper surface of the second cooling plate (120), and a third glue body is arranged between the third glue guide groove (125) and the side surface of the battery core (200).

8. The liquid cooling plate of claim 7, wherein the outer edge of the first cooling plate (110) is provided with a third glue overflow groove (114); and/or:

and a fourth glue overflowing groove (126) is formed in the top of the second cooling plate (120).

9. The liquid cooled plate of any of claims 1-8, wherein the lower surface of the first cooling plate (110) is provided with a reinforcement sheet.

10. The liquid cooled plate of any of claims 1-8, wherein the lower surface of the first cooling plate (110) is provided with a buffer (130).

11. Battery module, characterized in that it comprises a plurality of cells (200) arranged side by side and a liquid-cooled plate (100) according to any of claims 1 to 10.

12. A battery pack, comprising a battery case (300) and the battery module according to claim 11, wherein the first cooling plate (110) located at the outermost edge is connected to the edge beam (310) of the battery case (300).