CN220253314U

CN220253314U - Battery pack and energy storage system

Info

Publication number: CN220253314U
Application number: CN202320967599.0U
Authority: CN
Inventors: 马宝义
Original assignee: Shenzhen Sofarsolar Co Ltd
Current assignee: Shenzhen Sofarsolar Co Ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-12-26
Anticipated expiration: 2033-04-21

Abstract

The embodiment of the utility model relates to the technical field of energy storage, and particularly discloses a battery pack and an energy storage system. Through the mode, the liquid cooling plate is fixed with the inner surface of the shell through the locking component, and the liquid cooling plate and the shell are ensured to be firmly connected, so that the cost is reduced.

Description

Battery pack and energy storage system

Technical Field

The embodiment of the utility model relates to the technical field of energy storage, in particular to a battery pack and an energy storage system.

Background

With the development of energy storage technology, energy storage systems are increasingly used, wherein a battery pack is a basic unit of the energy storage system. The stable work of battery package is particularly important, can produce a large amount of heat when the battery package during operation, if can't in time distribute away the heat, can influence the normal operating of battery package and its life, at present, the battery package passes through liquid cooling board and coolant conveying equipment intercommunication for coolant circulation flows and takes away the heat.

However, in implementing embodiments of the present utility model, the inventors found that: at present, the battery package includes shell, battery module and liquid cooling board, and battery package and liquid cooling board all set up in the shell to the liquid cooling board is through the punching press brazing and the internal surface friction welding of shell become integrative, but punching press brazed fixed mode can cause the welding volume to be many, leads to with high costs.

Disclosure of Invention

The technical problem which is mainly solved by the embodiment of the utility model is to provide the battery pack and the energy storage system, the liquid cooling plate is fixed with the inner surface of the shell through the locking component, and the liquid cooling plate is ensured to be firmly connected with the shell, so that the cost is reduced.

In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a battery pack, including shell, battery module, liquid cooling board and locking subassembly, the shell is provided with accepts the chamber, the battery module is fixed in accept the intracavity, the liquid cooling board is located accept the intracavity, and the liquid cooling board butt in the surface of battery module, locking subassembly is used for with the liquid cooling board is fixed in the internal surface of shell.

Optionally, the liquid cooling plate is provided with a first through hole;

the locking assembly comprises a first bolt and a screw hole arranged on the inner surface of the shell, and the first bolt passes through the first through hole and is in threaded connection with the screw hole.

Optionally, the shell includes drain pan and upper cover, the drain pan is located to the upper cover, drain pan and upper cover enclose the chamber of acceping, the internal surface of drain pan is provided with first reinforcement, the screw sets up in first reinforcement.

Optionally, the number of the first reinforcing members is multiple, the multiple first reinforcing members are arranged at intervals, the first reinforcing members are further provided with first avoiding gaps, and the first avoiding gaps are communicated with gaps between two adjacent first reinforcing members to form an accommodating groove together;

the liquid cooling plate comprises a liquid cooling plate body, a first joint and a second joint, wherein the liquid cooling plate body is provided with a liquid guide pipe, the first joint and the second joint are arranged on the liquid cooling plate body, the first joint is connected with one end of the liquid guide pipe, the second joint is connected with the other end of the liquid guide pipe, the liquid guide pipe is accommodated in the accommodating groove, and the first through hole is formed in the liquid cooling plate body.

Optionally, the inner surface of the bottom shell is provided with a second reinforcement, and the second reinforcement is perpendicular to the first reinforcement;

the battery pack further includes a fixing assembly;

the second reinforcement is provided with the second and dodges the breach, first joint set up in the breach is dodged to the second, fixed subassembly is used for dodging the breach with the first joint in the second.

Optionally, the second reinforcement is further provided with a first clamping groove and a second clamping groove, the first clamping groove and the second clamping groove are located at two sides of the second avoidance port, and the first clamping groove and the second clamping groove are both communicated with the second avoidance port;

the fixed subassembly includes the clamp plate, the clamp plate is provided with first clamping table and second clamping table, the clamp plate is located the mouth is dodged to the second, first clamping table joint in first draw-in groove, the second clamping table joint in the second draw-in groove.

Optionally, the fixing assembly further comprises a fixing column, one end of the fixing column is fixed on the inner surface of the bottom shell, the pressing plate is provided with a second through hole, and the fixing column is inserted into the second through hole.

Optionally, the fixing component includes a first flexible gasket and a second flexible gasket, the first flexible gasket is arranged between the inner surface of the bottom shell and the first joint, and the second flexible gasket is arranged between the first joint and the pressing plate.

Optionally, the battery pack further includes a heat conducting member, the heat conducting member has a first surface and a second surface opposite to each other, the first surface is attached to the surface of the battery module, and the second surface is attached to the surface of the liquid cooling plate.

In order to solve the technical problems, the utility model adopts another technical scheme that: an energy storage system is provided, comprising the battery pack.

In the embodiment of the utility model, the battery pack comprises a shell, a battery module, a liquid cooling plate and a locking assembly, wherein the shell is provided with a containing cavity, the battery module is fixed in the containing cavity, the liquid cooling plate is positioned in the containing cavity and is abutted to the surface of the battery module, and the locking assembly is used for fixing the liquid cooling plate on the inner surface of the shell. The liquid cooling plate is fixed with the inner surface of the shell through the locking component, so that the liquid cooling plate and the shell are ensured to be firmly connected, and the cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic exploded view of a battery pack according to an embodiment of the present utility model;

fig. 2 is a schematic exploded view of the bottom case and the fixing assembly of the case of the battery pack according to the embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is an enlarged schematic view of portion B of FIG. 2;

fig. 5 is a schematic structural diagram of a liquid cooling plate of a battery pack according to an embodiment of the present utility model.

Reference numerals illustrate:

100. a battery pack; 1. a housing; 11. a bottom case; 111. a first reinforcement; 1111. the first avoidance notch; 112. a second reinforcement; 1121. a second avoidance gap; 1122. a first clamping groove; 1123. a second clamping groove; 113. a third reinforcement; 114. a fourth reinforcement; 115. a first opening; 116. a second opening; 117. a receiving groove; 12. an upper cover; 13. a housing chamber; 2. a battery module; 3. a liquid cooling plate; 31. a liquid cooling plate body; 311. a first through hole; 32. a first joint; 33. a second joint; 4. a locking assembly; 41. a screw hole; 5. a fixing assembly; 51. a pressing plate; 511. a first clamping table; 512. a second clamping table; 513. a second through hole; 52. fixing the column; 53. a first flexible gasket; 54. a second flexible gasket.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "locked" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, a battery pack 100 includes a housing 1, a battery module 2, a liquid cooling plate 3, a locking assembly 4, a fixing assembly 5, and a heat conductive member (not shown). The battery module 2 is fixed in the shell 1, and the battery module 2 is used for storing energy and providing electric energy for external electric equipment. The liquid cooling plate 3 is located the chamber 13 of acceping to the surface in the battery module 2 is butt in liquid cooling plate 3, and liquid cooling plate 3 is used for communicating with external cooling conveying equipment, makes the heat that the battery module 2 produced is taken away in coolant circulation flow. The locking assembly 4 is used to secure the liquid cooling plate 3 to the inner surface of the housing 1. The fixing component 5 is disposed in the housing 1, and the fixing component 5 is used for fixing a part of the liquid cooling plate 3. The heat conduction piece sets up between battery piece and liquid cooling board 3, and the heat conduction piece is used for promoting thermal transmission efficiency to and, play the effect of fixed battery module 2.

For the above-mentioned housing 1, referring to fig. 1 and 2, the housing 1 includes a bottom case 11 and an upper cover 12. The upper cover 12 is provided on the bottom case 11, and the upper cover 12 and the bottom case 11 enclose a housing chamber 13. The bottom chassis 11 is provided with a first reinforcing member 111, a second reinforcing member 112, a third reinforcing member 113, a fourth reinforcing member 114, a first opening 115, and a second opening 116. The first reinforcing members 111 are disposed on the inner surface of the bottom shell 11, in some embodiments, the number of the first reinforcing members 111 is multiple, the multiple first reinforcing members 111 are disposed at intervals, the first reinforcing members 111 are provided with first avoiding notches 1111, and the accommodating grooves 117 are formed by the gap communication between the first avoiding notches 1111 and two adjacent first reinforcing members 111. The second reinforcement 112 is disposed on the inner surface of the bottom case 11, the second reinforcement 112 is perpendicular to the first reinforcement 111, and the second reinforcement 112 is provided with a second avoidance notch 1121, a first clamping groove 1122, and a second clamping groove 1123. The first and second clamping grooves 1122 and 1123 are located at both sides of the second avoidance gap 1121, and the first and second clamping grooves 1122 and 1123 are both in communication with the second avoidance gap 1121. In some embodiments, the number of the second avoidance notches 1121 is two, and the two second avoidance notches 1121 are disposed at intervals. The third reinforcement 113 is disposed on the inner surface of the bottom chassis 11, and the third reinforcement 113 is perpendicular to the first reinforcement 111. The fourth reinforcement 114 is disposed on the inner surface of the bottom chassis 11, and the fourth reinforcement 114 is parallel to the first reinforcement 111, and in some embodiments, the number of the fourth reinforcement 114 is two, and the plurality of first reinforcements 111 are spaced between the two fourth reinforcements 114. The first opening 115 and the second opening 116 are both in communication with the receiving cavity 13.

In some embodiments, the bottom shell 11 is made of a metal material by welding or die casting, however, the bottom shell 11 may be extruded of an aluminum material, but not limited thereto, and the bottom shell 11 may be made of plastic.

For the above-mentioned liquid-cooling plate 3, please refer to fig. 4, the liquid-cooling plate 3 includes a liquid-cooling plate body 31, a first connector 32 and a second connector 33. The liquid cooling plate body 31 is located in the accommodating cavity 13, and the liquid cooling plate body 31 is provided with a first through hole 311 and a liquid guide pipe (not shown), and the liquid guide pipe is accommodated in the accommodating groove 117. The first connector 32 is disposed on the liquid cooling plate body 31, the first connector 32 is connected to one end of the liquid guiding pipe, and the first connector 32 extends out of the accommodating cavity 13 after passing through a second avoiding notch 1121 and the first opening 115. The second joint 33 is disposed on the liquid cooling plate body 31, the second joint 33 is connected to the other end of the liquid guiding pipe, and the second joint 33 extends out of the accommodating cavity 13 after passing through the second avoiding notch 1121 and the second opening 116. Wherein, first joint 32 and second joint 33 are used for being connected with coolant conveying equipment for the drain pipe forms the cooling circuit with coolant conveying equipment intercommunication, makes the coolant liquid circulate between drain pipe and coolant conveying equipment, in order to take away the produced heat of battery module 2, thereby cools off battery module 2, guarantees battery module 2 normal operating.

For the above-mentioned locking assembly 4, referring to fig. 2, the locking assembly 4 includes a first bolt (not shown) and a screw hole 41 provided in the first reinforcement 111. The first bolt passes first through hole 311 spiro union in screw 41 to fix liquid cooling board 3 and drain pan 11, make liquid cooling board 3 and drain pan 11 be connected stably, the fixed mode of first bolt spiro union in screw 41 is compared the fixed mode of adoption punching press brazed with low costs.

In some embodiments, the locking assembly includes a rivet nut (not shown), the first reinforcement 111 is provided with a fixing hole (not shown), the rivet nut is fixed to the fixing hole, and the first bolt is screwed to the rivet nut to fix the liquid cooling plate 3 with the bottom chassis 11.

It will be appreciated that: the locking assembly 4 is not limited to the above structure, and the locking assembly 4 may have other structures, for example: the locking assembly 4 includes a second bolt and a buckle, the buckle is disposed on the first reinforcement 111, and the second bolt passes through the first through hole 311 to be connected with the buckle, so as to fix the liquid cooling plate 3 with the bottom shell 11.

For the above-mentioned fixing assembly 5, please refer to fig. 3, the fixing assembly 5 includes a pressing plate 51, a fixing post 52, a first flexible spacer 53 and a second flexible spacer 54. The pressing plate 51 is located in the second avoiding notch 1121, and the pressing plate 51 is provided with a first clamping table 511, a second clamping table 512 and a second through hole 513. The first clamping table 511 is clamped in the first clamping groove 1122. The second clamping table 512 is clamped in the second clamping groove 1123. The first clamping table 511 and the second clamping table 512 are used for fixing the pressing plate 51 and the bottom shell 11, so that the pressing plate 51 abuts against the first connector 32, and the liquid cooling plate 3 and the bottom shell 11 are further firmly connected. One end of the fixing column 52 is fixed on the inner surface of the bottom shell 11, the fixing column 52 is inserted into the second through hole 513, and the fixing column 52 is used for limiting the movement of the pressing plate 51. The first flexible gasket 53 is located in the second avoidance gap 1121, and the first flexible gasket 53 is arranged between the inner surface of the bottom shell 11 and the first joint 32. A second flexible gasket 54 is interposed between the first joint 32 and the pressure plate 51. The first flexible gasket 53 and the second flexible gasket 54 are used for avoiding the first joint 32 from being scratched and damaged with the inner wall surface of the bottom shell 11 and the pressing plate 51, and the pressing plate 51 locks the first joint 32 to be better extruded and fixed in a protective manner, so that reliability is improved.

In some embodiments, the first flexible gasket 53 and the second flexible gasket 54 are made of a rubber material.

In some embodiments, the fixing posts 52 are studs, and the fixing assembly 5 further includes nuts (not shown), to which the fixing posts 52 are screwed through the second through holes 513, further securing the connection of the pressing plate 51 with the bottom chassis 11.

In some embodiments, the number of the fixing components 5 is two, one fixing component 5 is located in one second avoiding notch 1121, one fixing component 5 is used for fixing the first joint 32, the other fixing component 5 is located in the other second avoiding notch 1121, and the other fixing component 5 is used for fixing the second joint 33.

For the heat conducting piece, the heat conducting piece is provided with a first surface and a second surface which are opposite, the first surface is attached to the surface of the battery module 2, the second surface is attached to the surface of the liquid cooling plate 3, and the heat conducting piece plays a role in fixing the battery module 2 while improving the heat transfer efficiency between the battery module 2 and the liquid cooling plate 3.

In some embodiments, the thermally conductive member is a layer of insulating thermally conductive structural fixing glue.

In the embodiment of the utility model, the battery pack 100 comprises a housing 1, a battery module 2, a liquid cooling plate 3 and a locking assembly 4, wherein the housing 1 is provided with a containing cavity 13, the battery module 2 is fixed in the containing cavity 13, the liquid cooling plate 3 is positioned in the containing cavity 13, the liquid cooling plate 3 is abutted against the surface of the battery module 2, and the locking assembly 4 is used for fixing the liquid cooling plate 3 on the inner surface of the housing 1. The liquid cooling plate 3 is fixed with the inner surface of the shell 1 through the locking component 4, so that the liquid cooling plate 3 and the shell 1 are ensured to be firmly connected, and the cost is reduced.

The embodiment of the utility model mainly relates to the technical field of energy storage, and the battery pack 100 can be used for series-parallel connection of container type battery clusters.

The present utility model further provides an embodiment of an energy storage system, where the energy storage system includes the battery pack 100 described above, and the structure and the function of the battery pack 100 can be referred to the above embodiment, and are not described herein in detail.

It should be noted that the description of the present utility model and the accompanying drawings illustrate preferred embodiments of the present utility model, but the present utility model may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, which are not to be construed as additional limitations of the utility model, but are provided for a more thorough understanding of the present utility model. The above-described features are further combined with each other to form various embodiments not listed above, and are considered to be the scope of the present utility model described in the specification; further, modifications and variations of the present utility model may be apparent to those skilled in the art in light of the foregoing teachings, and all such modifications and variations are intended to be included within the scope of this utility model as defined in the appended claims.

Claims

1. A battery pack, comprising:

a housing provided with a receiving cavity;

the battery module is fixed in the accommodating cavity;

the liquid cooling plate is positioned in the accommodating cavity and is abutted against the surface of the battery module;

and the locking assembly is used for fixing the liquid cooling plate on the inner surface of the shell.

2. The battery pack of claim 1, wherein the battery pack comprises a plurality of battery cells,

the liquid cooling plate is provided with a first through hole;

3. The battery pack of claim 2, wherein the battery pack comprises a plurality of battery cells,

the shell comprises a bottom shell and an upper cover, the upper cover is arranged on the bottom shell, the containing cavity is surrounded by the bottom shell and the upper cover, a first reinforcing piece is arranged on the inner surface of the bottom shell, and the screw hole is formed in the first reinforcing piece.

4. The battery pack of claim 3, wherein the battery pack comprises a plurality of battery cells,

the number of the first reinforcing pieces is multiple, the first reinforcing pieces are arranged at intervals, the first reinforcing pieces are further provided with first avoiding gaps, and the first avoiding gaps are communicated with gaps between two adjacent first reinforcing pieces to form accommodating grooves;

5. The battery pack of claim 4, wherein the battery pack comprises a plurality of battery cells,

the inner surface of the bottom shell is provided with a second reinforcing piece, and the second reinforcing piece is perpendicular to the first reinforcing piece;

the battery pack further includes a fixing assembly;

6. The battery pack of claim 5, wherein the battery pack comprises a plurality of battery cells,

the second reinforcement piece is further provided with a first clamping groove and a second clamping groove, the first clamping groove and the second clamping groove are positioned on two sides of the second avoidance gap, and the first clamping groove and the second clamping groove are communicated with the second avoidance gap;

the fixed subassembly includes the clamp plate, the clamp plate is provided with first clamping table and second clamping table, the clamp plate is located the breach is dodged to the second, first clamping table joint in first draw-in groove, the second clamping table joint in the second draw-in groove.

7. The battery pack of claim 6, wherein the battery pack comprises a plurality of battery cells,

the fixing assembly further comprises a fixing column, one end of the fixing column is fixed to the inner surface of the bottom shell, the pressing plate is provided with a second through hole, and the fixing column is inserted into the second through hole.

8. The battery pack of claim 6, wherein the battery pack comprises a plurality of battery cells,

the fixing assembly comprises a first flexible gasket and a second flexible gasket, the first flexible gasket is arranged between the inner surface of the bottom shell and the first joint, and the second flexible gasket is arranged between the first joint and the pressing plate.

9. The battery pack according to any one of claims 1 to 8, wherein,

the battery pack also comprises a heat conduction piece, wherein the heat conduction piece is provided with a first surface and a second surface which are opposite, the first surface is attached to the surface of the battery module, and the second surface is attached to the surface of the liquid cooling plate.

10. An energy storage system comprising a battery pack according to any one of claims 1-9.