CN216250879U

CN216250879U - Battery structure with liquid cooling subassembly

Info

Publication number: CN216250879U
Application number: CN202122628301.7U
Authority: CN
Inventors: 韩五禄
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-08
Anticipated expiration: 2031-10-29

Abstract

The utility model relates to the technical field of batteries, and particularly discloses a battery structure with a liquid cooling assembly, which comprises a battery module and the liquid cooling assembly, wherein the battery module comprises a plurality of battery cores which are sequentially arranged along a first direction; the liquid cooling subassembly includes first liquid cooling board and connecting plate, be provided with first cooling channel in the first liquid cooling board, first liquid cooling board pastes on locating a lateral wall along the battery module of first direction, the connecting plate is inserted and is located between arbitrary two adjacent electric cores, integrated liquid inlet pipe and drain pipe in the connecting plate, liquid inlet pipe and drain pipe communicate with the inlet and the liquid outlet of first cooling channel respectively, the other end of liquid inlet pipe and the other end of drain pipe are used for respectively communicating with cooling device. The battery structure solves the problems that the liquid cooling assembly is integrated at the bottom of the battery box body, so that the manufacturing cost is high, the ball impact resistance is poor, and the space in the z direction is occupied.

Description

Battery structure with liquid cooling subassembly

Technical Field

The utility model relates to the technical field of battery modules, in particular to a battery structure with a liquid cooling assembly.

Background

At present, most of the battery modules in the industry do not have liquid cooling components. Most manufacturers mainly use the integrated liquid cooling at the bottom of the battery box as the liquid cooling scheme of the battery system, but the integrated liquid cooling at the bottom of the battery box occupies a Z-direction space, and the process of integrating the liquid cooling assembly at the bottom of the box is complex, the cost is high, further, the integral rigidity of the battery box is weakened after the liquid cooling assembly is integrated at the bottom, and the bottom ball impact resistance is reduced. The liquid cooling plate is integrated at the bottom of the box body, and once the liquid cooling plate fails, the whole battery box needs to be scrapped, so that the maintenance cost is very high; moreover, the liquid cooling assembly arranged at the bottom of the module is not suitable for all cell forms, for example, different structural structures (A, B, C types) are arranged in a square aluminum shell cell, different internal structures are different in heat transfer path and different in heat management surface selection, the bottom liquid cooling is only suitable for two of the structures, and the other liquid cooling is adopted, so that the heat transfer path is longer and the heat management efficiency is lower; the heat management energy consumption is higher;

SUMMERY OF THE UTILITY MODEL

The utility model aims to: the battery structure with the liquid cooling assembly is provided to solve the problems that in the related art, the liquid cooling assembly is integrated at the bottom of a battery box body, so that the manufacturing cost is high, the ball impact resistance is poor, the space in the z direction is occupied and the like.

The utility model provides a battery structure with a liquid cooling assembly, which comprises:

the battery module comprises a plurality of battery cells which are sequentially arranged along a first direction;

the liquid cooling assembly comprises a first liquid cooling plate and a connecting plate, wherein a first cooling channel is arranged in the first liquid cooling plate, the first liquid cooling plate is attached to one side wall of the battery module along a first direction, the connecting plate is inserted between any two adjacent battery cores, a liquid inlet pipeline and a liquid outlet pipeline are integrated in the connecting plate, one end of the liquid inlet pipeline and one end of the liquid outlet pipeline are respectively communicated with a liquid inlet and a liquid outlet of the first cooling channel, and the other end of the liquid inlet pipeline and the other end of the liquid outlet pipeline are respectively communicated with a cooling device.

As a preferred technical scheme of a battery structure with a liquid cooling assembly, a first interface and a second interface are arranged on one side surface of the connecting plate opposite to the first liquid cooling plate, the first interface is communicated with the liquid inlet pipeline, and the second interface is communicated with the liquid outlet pipeline;

when the first liquid cooling plate is attached to the battery module, the liquid inlet of the first cooling channel is opposite to and communicated with the first interface, and the liquid outlet of the first cooling channel is opposite to and communicated with the second interface.

As an optimal technical scheme of the battery structure with the liquid cooling assembly, the battery structure further comprises a second liquid cooling plate, a second cooling channel is arranged in the second liquid cooling plate, the second cooling channel is attached to the other side wall of the battery module along the first direction, and the liquid inlet pipeline and the liquid outlet pipeline are respectively communicated with a liquid inlet and a liquid outlet of the second cooling channel.

As an optimal technical scheme of the battery structure with the liquid cooling assembly, the first liquid cooling plate and the second liquid cooling plate are respectively glued with the battery module through the heat conduction structure.

As a preferred technical scheme of a battery structure with a liquid cooling assembly, a third interface and a fourth interface are arranged on one side surface of the connecting plate opposite to the second liquid cooling plate, the third interface is communicated with the liquid inlet pipeline, and the fourth interface is communicated with the liquid outlet pipeline;

when the second liquid cooling plate is attached to the battery module, the liquid inlet of the second cooling channel is opposite to and communicated with the third interface, and the liquid outlet of the second cooling channel is opposite to and communicated with the fourth interface.

As a preferred technical scheme of the battery structure with the liquid cooling assembly, the first interface, the second interface, the third interface and the fourth interface are all annular grooves, sealing rings are arranged in the annular grooves, the liquid inlet and the liquid outlet of the first cooling channel are both annular protrusions, and the liquid inlet and the liquid outlet of the second cooling channel are both annular protrusions;

when the first liquid cooling plate and the second liquid cooling plate are attached to the battery module, the annular protrusions are respectively inserted into the corresponding annular grooves.

As an optimal technical scheme of the battery structure with the liquid cooling assembly, the first liquid cooling plate and the second liquid cooling plate are fixedly connected with the connecting plate through bolts respectively.

As the preferable technical scheme of the battery structure with the liquid cooling assembly, the connecting plates are located at the symmetrical positions of the battery module along the first direction.

As a preferred technical scheme of a battery structure with a liquid cooling assembly, the first cooling channel comprises a first branch and a second branch, the first branch and the second branch are both communicated with a liquid inlet and a liquid outlet of the first cooling channel, and the first branch and the second branch are symmetrical relative to the connecting plate;

the second cooling channel comprises a third branch and a fourth branch, the third branch and the fourth branch are communicated with a liquid inlet and a liquid outlet of the second cooling channel, and the third branch and the fourth branch are symmetrical relative to the connecting plate.

As a preferred technical solution of the battery structure with the liquid cooling assembly, the liquid inlet pipeline comprises a main liquid inlet pipe and a first branch liquid inlet pipe and a second branch liquid inlet pipe which are respectively communicated with the main liquid inlet pipe, the first branch liquid inlet pipe is communicated with the first interface, and the second branch liquid inlet pipe is communicated with the third interface;

the drain pipe way including main drain pipe with respectively with first drain pipe and the second of main drain pipe intercommunication pay off liquid pipe, first drain pipe with the second interface intercommunication, the second pay off liquid pipe with the fourth interface intercommunication.

As a preferred technical scheme of the battery structure with the liquid cooling assembly, the liquid inlet pipeline comprises a first liquid inlet pipe and a second liquid inlet pipe, the first liquid inlet pipe is communicated with the first interface, and the second liquid inlet pipe is communicated with the third interface;

the liquid outlet pipe comprises a first liquid outlet pipe and a second liquid outlet pipe, the first liquid outlet pipe is communicated with the second interface, and the second liquid outlet pipe is communicated with the fourth interface.

As an optimal technical scheme of the battery structure with the liquid cooling assembly, the battery structure further comprises a first end plate and a second end plate, the first end plate and the second end plate are respectively attached to two side walls of the battery module along a second direction, two ends of the first end plate are fixedly connected with the first liquid cooling plate and the second liquid cooling plate respectively, and two ends of the second end plate are fixedly connected with the first liquid cooling plate and the second liquid cooling plate respectively.

As the preferable technical scheme of the battery structure with the liquid cooling assembly, the battery structure further comprises two insulating partition plates, one insulating partition plate is located between the battery module and the first end plate, and the other insulating partition plate is located between the second end plate and the battery module.

The utility model has the beneficial effects that:

the utility model provides a battery structure with a liquid cooling assembly, which comprises a battery module and the liquid cooling assembly, wherein the battery module comprises a plurality of battery cores, and the battery cores are sequentially arranged along a first direction; the liquid cooling subassembly includes first liquid cooling board and connecting plate, be provided with first cooling channel in the first liquid cooling board, first liquid cooling board pastes and locates on a lateral wall of the battery module along first direction, the connecting plate is inserted and is located between arbitrary two adjacent electric cores, integrated liquid inlet pipe and drain pipe in the connecting plate, the one end of liquid inlet pipe and the one end of drain pipe communicate with the inlet and the liquid outlet of first cooling channel respectively, the other end of liquid inlet pipe and the other end of drain pipe are used for respectively communicating with cooling device. The battery structure is characterized in that a liquid inlet pipeline and a liquid outlet pipeline are integrated on a connecting plate of the battery structure, wherein one end of the liquid inlet pipeline is communicated with a liquid inlet of a first cooling channel, the other end of the liquid inlet pipeline is communicated with a liquid outlet of a cooling device, one end of the liquid outlet pipeline is communicated with a liquid outlet of the first cooling channel, the other end of the liquid outlet pipeline is communicated with a liquid outlet of the cooling device, and a liquid cooling assembly and the cooling device form a cooling circulation loop. Simultaneously, first liquid cooling plate sets up on a lateral wall along first direction, and then avoids setting up on the diapire of the battery module of perpendicular to horizontal plane direction. The liquid cooling assembly can be integrated at the bottom of the battery box body, so that the problems of high manufacturing cost, poor ball impact resistance, occupation of z-direction space and the like are caused.

Drawings

FIG. 1 is an exploded view of a battery structure with a liquid cooled assembly according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a battery structure with a liquid cooling assembly according to an embodiment of the present invention;

FIG. 3 is an exploded view of a liquid cooling module according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view at A-A of a web in an embodiment of the present invention;

FIG. 5 is a cross-sectional view at B-B of a web in an embodiment of the present invention;

FIG. 6 is a cross-sectional view at C-C of a web in an embodiment of the present invention;

FIG. 7 is a cross-sectional view at D-D of a web in an embodiment of the present invention.

In the figure:

1. a battery module; 11. an electric core;

2. a liquid cooling assembly; 21. a first liquid cold plate; 211. a first cooling channel; 2111. a first branch; 2112. a second branch circuit; 212. a first base plate; 213. a first cover plate;

22. a connecting plate; 221. a liquid inlet pipeline; 2211. a first interface; 2212. a third interface; 2213. a main liquid inlet pipe; 2214. a first liquid inlet pipe; 2215. a second branch liquid inlet pipe; 2216. a first liquid inlet pipe; 2217. a second liquid inlet pipe;

222. a liquid outlet pipeline; 2221. a second interface; 2222. a fourth interface; 2223. a main liquid outlet pipe; 2224. a first liquid outlet pipe; 2225. a second outlet tube; 2226. a first liquid outlet pipe; 2227. a second liquid outlet pipe;

23. a second liquid cooling plate; 231. a second cooling channel; 2311. a third branch; 2312. a fourth branch; 232. a second base plate; 233. a second cover plate;

3. a first end plate; 4. a second end plate; 5. an insulating spacer; 6. and a heat dissipation cover plate.

Detailed Description

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. 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 invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being 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," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means 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 invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1 to 3, the embodiment provides a battery structure with a liquid cooling assembly, where the battery structure with the liquid cooling assembly includes a battery module 1 and a liquid cooling assembly 2, the battery module 1 includes a plurality of battery cells 11, and the plurality of battery cells 11 are sequentially arranged along a first direction; the liquid cooling assembly 2 comprises a first liquid cooling plate 21 and a connecting plate 22, a first cooling channel 211 is arranged in the first liquid cooling plate 21, the first liquid cooling plate 21 is attached to one side wall of the battery module 1 along the first direction, the connecting plate 22 is inserted between any two adjacent battery cores 11, a liquid inlet pipeline 221 and a liquid outlet pipeline 222 are integrated in the connecting plate 22, the liquid inlet pipeline 221 and the liquid outlet pipeline 222 are respectively communicated with a liquid inlet and a liquid outlet of the first cooling channel 211, and the other end of the liquid inlet pipeline 221 and the other end of the liquid outlet pipeline 222 are respectively communicated with a cooling device. A liquid inlet pipe 221 and a liquid outlet pipe 222 are integrated on the connecting plate 22 of the battery structure, wherein one end of the liquid inlet pipe 221 is communicated with a liquid inlet of the first cooling channel 211, the other end of the liquid inlet pipe 221 is communicated with a liquid outlet of the cooling device, one end of the liquid outlet pipe 222 is communicated with a liquid outlet of the first cooling channel 211, the other end of the liquid outlet pipe 222 is communicated with a liquid outlet of the cooling device, and then the liquid cooling assembly 2 and the cooling device form a cooling circulation loop. Meanwhile, the first liquid cooling plate 21 is disposed on one side wall along the first direction, and is thereby prevented from being disposed on the bottom wall of the battery module 1 perpendicular to the horizontal direction. The liquid cooling assembly 2 can be integrated at the bottom of the battery box body, so that the problems of high manufacturing cost, poor ball impact resistance, occupation of z-direction space and the like are caused.

Specifically, the first liquid cooling plate 21 includes a first cover plate 213 and a first base plate 212, and the first cover plate 213 and the first base plate 212 are attached to each other and form the first cooling channel 211.

As to the specific connection manner of the connection plate 22 and the first liquid-cold plate 21, optionally, a first interface 2211 and a second interface 2221 are arranged on one side surface of the connection plate 22 opposite to the first liquid-cold plate 21, the first interface 2211 is communicated with the liquid inlet pipeline 221, and the second interface 2221 is communicated with the liquid outlet pipeline 222; when the first liquid-cooling plate 21 is attached to the battery module 1, the liquid inlet of the first cooling channel 211 is opposite to and communicated with the first interface 2211, and the liquid outlet of the first cooling channel 211 is opposite to and communicated with the second interface 2221. In this embodiment, the liquid inlet of the first cooling channel 211 is an annular protrusion, the first interface 2211 is an annular groove, and when the first liquid-cooling plate 21 is attached to the battery module 1, the annular protrusion and the annular groove are inserted, so that the liquid inlet pipeline 221 is communicated with the liquid inlet of the first cooling channel 211. In order to ensure the connection airtightness between the first interface 2211 and the liquid inlet of the first cooling channel 211, a sealing ring is arranged in the annular groove, and when the annular protrusion is inserted into the annular groove, the annular protrusion abuts against the sealing ring.

In order to ensure that the annular protrusion and the sealing ring have enough abutting force, optionally, the bolt penetrates through the first liquid cooling plate and is in threaded connection with the connecting plate, and the position of the first liquid cooling plate opposite to the connecting plate abuts against the connecting plate through the pretightening force of the bolt.

The connection between the liquid outlet of the first cooling channel 211 and the second port 2221 is the same as the connection between the first port 2211 and the liquid inlet of the first cooling channel 211, which is not described herein again.

When only one side wall of the battery module 1 along the first direction is provided with the first liquid cooling plate 21, the cooling effect of the battery module 1 close to one side of the first liquid cooling plate 21 is better than that of the battery module 1 far away from one side of the first liquid cooling plate 21, and therefore, the temperature difference of each part of the battery module 1 is large due to the arrangement. In order to avoid this problem, optionally, the battery module further includes a second liquid cooling plate 23, a second cooling channel 231 is disposed in the second liquid cooling plate 23, the second cooling channel 231 is attached to another side wall of the battery module 1 along the first direction, and the liquid inlet pipe 221 and the liquid outlet pipe 222 are respectively communicated with a liquid inlet and a liquid outlet of the second cooling channel 231. In this embodiment, the first liquid cooling plate 21 and the second liquid cooling plate 23 have the same structure and are symmetrically disposed along a symmetry line of the battery module 1 along the first direction. Therefore, the arrangement cools and dissipates heat from the two sides of the battery module 1 along the first direction, so as to reduce the temperature difference of each part of the battery module 1.

Specifically, the second liquid cooling plate 23 includes a second cover plate 233 and a second base plate 232, and the second cover plate 233 and the second base plate 232 are attached to each other and form the second cooling channel 231.

Optionally, the first liquid-cooling plate 21 and the second liquid-cooling plate 23 are respectively bonded to the battery module 1 by a heat-conducting structural adhesive. In this embodiment, the heat-conducting structural adhesive can accelerate the heat generated by the battery module 1 to be transferred to the first liquid-cooling plate 21 and the second liquid-cooling plate 23.

Optionally, a third interface 2212 and a fourth interface 2222 are arranged on one side surface of the connecting plate 22 opposite to the second liquid cooling plate 23, the third interface 2212 is communicated with the liquid inlet pipeline 221, and the fourth interface 2222 is communicated with the liquid outlet pipeline 222; when the second liquid cooling plate 23 is attached to the battery module 1, the liquid inlet of the second cooling channel 231 is opposite to and communicated with the third interface 2212, and the liquid outlet of the second cooling channel 231 is opposite to and communicated with the fourth interface 2222. In this embodiment, the connection manner between the liquid inlet of the second cooling channel 231 and the third interface 2212 and the connection manner between the liquid outlet of the second cooling channel 231 and the fourth interface 2222 are the same as the connection manner between the first interface 2211 and the liquid inlet of the first cooling channel 211. And will not be described in detail herein.

Alternatively, the connection plates 22 are located at symmetrical positions of the battery module 1 in the first direction. The first cooling channel 211 comprises a first branch 2111 and a second branch 2112, the first branch 2111 and the second branch 2112 are both communicated with the liquid inlet and the liquid outlet of the first cooling channel 211, and the first branch 2111 and the second branch 2112 are symmetrical relative to the connecting plate 22; the second cooling channel 231 comprises a third branch 2311 and a fourth branch 2312, the third branch 2311 and the fourth branch 2312 are communicated with a liquid inlet and a liquid outlet of the second cooling channel 231, and the third branch 2311 and the fourth branch 2312 are symmetrical relative to the connecting plate 22. In order to reduce the temperature difference of the battery module 1 along the first direction, in the present embodiment, the first branch 2111 and the second branch 2112 are symmetrically disposed, and the third branch 2311 and the fourth branch 2312 are symmetrically disposed. This arrangement allows the coolant to flow from the symmetrical positions along the opposite sides of the first direction, and thus the path along which the coolant flows can be shortened. This setting not only can promote the cooling effect of first liquid cold drawing 21 and second liquid cold drawing 23, can reduce the temperature difference of battery module 1 along each position on the first direction moreover.

As for the arrangement of the liquid inlet pipe 221 and the liquid outlet pipe 222 of the connection plate 22, as shown in fig. 4-7, there are two arrangement modes in this embodiment, which are a one-in one-out mode and a two-in two-out mode. For the one-in one-out mode, optionally, the liquid inlet pipeline 221 includes a main liquid inlet pipe 2213 and a first branch liquid inlet pipe 2214 and a second branch liquid inlet pipe 2215 respectively communicated with the main liquid inlet pipe 2213, the first branch liquid inlet pipe 2214 is communicated with the first port 2211, and the second branch liquid inlet pipe 2215 is communicated with the third port 2212; liquid outlet pipe 222 includes a main liquid outlet pipe 2223, and a first branch liquid outlet pipe 2224 and a second branch liquid outlet pipe 2225 respectively communicated with main liquid outlet pipe 2223, where first branch liquid outlet pipe 2224 is communicated with second port 2221, and second branch liquid outlet pipe 2225 is communicated with fourth port 2222. Main liquid inlet 2213 and main liquid outlet 2223 are respectively connected with a liquid storage device. The liquid inlet pipe 221 and the liquid outlet pipe 222 provide the advantage of high synchronization of the cooling liquid flowing into the first liquid-cooling plate 21 and the second liquid-cooling plate 23.

For the two-inlet and two-outlet manner, optionally, the liquid inlet pipeline 221 includes a first liquid inlet pipe 2216 and a second liquid inlet pipe 2217, the first liquid inlet pipe 2216 is communicated with the first port 2211, and the second liquid inlet pipe 2217 is communicated with the third port 2212; effluent circuit 222 includes a first effluent pipe 2226 and a second effluent pipe 2227, where first effluent pipe 2226 is communicated with a second port 2221, and second effluent pipe 2227 is communicated with a fourth port 2222. In this embodiment, the first liquid inlet tube 2216, the second liquid inlet tube 2217, the first liquid outlet tube 2226 and the second liquid outlet tube 2227 are all communicated with the liquid storage device. When the liquid cooling assembly 2 works, the function of independently controlling the flow rate of the cooling liquid in the first liquid cooling plate 21 and the flow rate of the cooling liquid in the second liquid cooling plate 23 can be realized by controlling the first liquid inlet pipe 2216 and the first liquid outlet pipe 2226 or controlling the second liquid inlet pipe 2217 and the second liquid outlet pipe 2227.

Optionally, the battery module further comprises a first end plate 3 and a second end plate 4, the first end plate 3 and the second end plate 4 are respectively attached to two side walls of the battery module 1 along the second direction, two ends of the first end plate 3 are respectively fixedly connected with the first liquid cooling plate 21 and the second liquid cooling plate 23, and two ends of the second end plate 4 are respectively fixedly connected with the first liquid cooling plate 21 and the second liquid cooling plate 23. In this embodiment, the first liquid cooling plate 21, the first end plate 3, the second liquid cooling plate 23 and the second end plate 4 are sequentially connected and enclosed to form a rectangular frame, and the battery module 1 is inserted into the rectangular frame and tightly supported by the rectangular frame. Thus. The enclosed rectangular frame can play a role in fixing the battery module 1. In addition, the first liquid cooling plate 21 and the second liquid cooling plate 23 may be respectively abutted against the battery module 1. Specifically, the first direction and the second direction are both located on the horizontal plane and perpendicular to each other, the first direction is the length direction of the battery module 1, and the second direction is the width direction of the battery module 1.

For the connection mode between the first liquid cooling plate 21 and the first end plate 3 and the second end plate 4, respectively, and the connection mode between the second liquid cooling plate 23 and the first end plate 3 and the second end plate 4, a pin joint mode is adopted in this embodiment, and in other embodiments, connection modes such as clamping or screwing can also be used.

Optionally, two insulating spacers 5 are further included, one insulating spacer 5 being located between the battery module 1 and the first end plate 3, and the other insulating spacer 5 being located between the second end plate 4 and the battery module 1. In this embodiment, the insulating spacer 5 serves as an insulator to prevent the battery module 1 from being electrically connected to the first end plate 3 or the second end plate 4, respectively.

Optionally, along the third direction, the top of the battery module 1 is provided with a heat dissipation cover plate 6, and a flow channel is provided in the heat dissipation cover plate 6, so that the battery module 1 can be cooled.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. 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. The utility model provides a battery structure with liquid cooling subassembly which characterized in that includes:

the battery module (1) comprises a plurality of battery cells (11), wherein the battery cells (11) are sequentially arranged along a first direction;

liquid cooling subassembly (2), including first liquid cold drawing (21) and connecting plate (22), be provided with first cooling channel (211) in first liquid cold drawing (21), first liquid cold drawing (21) paste locate along the first direction on a lateral wall of battery module (1), connecting plate (22) are inserted and are located arbitrary adjacent two between electric core (11), integrated liquid inlet pipeline (221) and drain pipe (222) have in connecting plate (22), the one end of liquid inlet pipeline (221) with the one end of outlet pipe (222) respectively with the inlet and the liquid outlet intercommunication of first cooling channel (211), the other end of liquid inlet pipeline (221) with the other end of outlet pipe (222) is used for respectively communicating with cooling device.

2. The battery structure with liquid cooling assemblies according to claim 1, wherein a side of the connecting plate (22) opposite to the first liquid cooling plate (21) is provided with a first interface (2211) and a second interface (2221), the first interface (2211) is communicated with the liquid inlet pipeline (221), and the second interface (2221) is communicated with the liquid outlet pipeline (222);

when the first liquid cooling plate (21) is attached to the battery module (1), the liquid inlet of the first cooling channel (211) is opposite to and communicated with the first interface (2211), and the liquid outlet of the first cooling channel (211) is opposite to and communicated with the second interface (2221).

3. The battery structure with liquid cooling assemblies according to claim 2, further comprising a second liquid cooling plate (23), wherein a second cooling channel (231) is disposed in the second liquid cooling plate (23), the second cooling channel (231) is attached to another sidewall of the battery module (1) along the first direction, and the liquid inlet pipeline (221) and the liquid outlet pipeline (222) are respectively communicated with a liquid inlet and a liquid outlet of the second cooling channel (231).

4. The battery structure with liquid cooling assembly of claim 3, wherein the first liquid cooling plate (21) and the second liquid cooling plate (23) are respectively glued to the battery module (1) by a heat conducting structural glue.

5. The battery structure with liquid cooling assemblies according to claim 3, wherein a side of the connecting plate (22) opposite to the second liquid cooling plate (23) is provided with a third interface (2212) and a fourth interface (2222), the third interface (2212) is communicated with the liquid inlet pipeline (221), and the fourth interface (2222) is communicated with the liquid outlet pipeline (222);

when the second liquid cooling plate (23) is attached to the battery module (1), the liquid inlet of the second cooling channel (231) is opposite to and communicated with the third interface (2212), and the liquid outlet of the second cooling channel (231) is opposite to and communicated with the fourth interface (2222).

6. The battery structure with liquid cooling assembly of claim 5, wherein the first port (2211), the second port (2221), the third port (2212) and the fourth port (2222) are all annular grooves, sealing rings are arranged in the annular grooves, the liquid inlet and the liquid outlet of the first cooling channel (211) are both annular protrusions, and the liquid inlet and the liquid outlet of the second cooling channel (231) are both annular protrusions;

when the first liquid cooling plate (21) and the second liquid cooling plate (23) are attached to the battery module (1), the annular protrusions are respectively inserted into the corresponding annular grooves.

7. The battery structure with liquid cooling assembly of claim 6, wherein the first liquid cooling plate (21) and the second liquid cooling plate (23) are respectively fixed to the connecting plate (22) by bolts.

8. The battery structure with liquid cooling assembly of claim 5, characterized in that the connecting plate (22) is located at a symmetrical position of the battery module (1) along the first direction.

9. The battery structure with liquid cooling assembly of claim 8, wherein the first cooling channel (211) comprises a first branch (2111) and a second branch (2112), the first branch (2111) and the second branch (2112) are both in communication with an inlet and an outlet of the first cooling channel (211), and the first branch (2111) and the second branch (2112) are symmetrical with respect to the connection plate (22);

the second cooling channel (231) comprises a third branch (2311) and a fourth branch (2312), the third branch (2311) and the fourth branch (2312) are communicated with a liquid inlet and a liquid outlet of the second cooling channel (231), and the third branch (2311) and the fourth branch (2312) are symmetrical relative to the connecting plate (22).

10. The battery structure with liquid cooling assembly of claim 5, wherein the liquid inlet line (221) comprises a main liquid inlet pipe (2213) and a first branch liquid inlet pipe (2214) and a second branch liquid inlet pipe (2215) respectively communicated with the main liquid inlet pipe (2213), the first branch liquid inlet pipe (2214) is communicated with the first interface (2211), and the second branch liquid inlet pipe (2215) is communicated with the third interface (2212);

the liquid outlet pipeline (222) comprises a main liquid outlet pipe (2223), a first branch liquid outlet pipe (2224) and a second branch liquid outlet pipe (2225) which are respectively communicated with the main liquid outlet pipe (2223), the first branch liquid outlet pipe (2224) is communicated with the second interface (2221), and the second branch liquid outlet pipe (2225) is communicated with the fourth interface (2222).

11. The battery structure with liquid cooling assembly of claim 5, wherein the liquid inlet line (221) comprises a first liquid inlet pipe (2216) and a second liquid inlet pipe (2217), the first liquid inlet pipe (2216) is communicated with the first interface (2211), and the second liquid inlet pipe (2217) is communicated with the third interface (2212);

liquid outlet pipe (222) includes first drain pipe (2226) and second drain pipe (2227), first drain pipe (2226) and second interface (2221) intercommunication, second drain pipe (2227) and fourth interface (2222) intercommunication.

12. The battery structure with the liquid cooling assembly according to any one of claims 3 to 11, further comprising a first end plate (3) and a second end plate (4), wherein the first end plate (3) and the second end plate (4) are respectively attached to two side walls of the battery module (1) along a second direction, two ends of the first end plate (3) are respectively fixedly connected with the first liquid cooling plate (21) and the second liquid cooling plate (23), and two ends of the second end plate (4) are respectively fixedly connected with the first liquid cooling plate (21) and the second liquid cooling plate (23).

13. The battery structure with liquid cooled assembly of claim 12, further comprising two insulating spacers (5), one of said insulating spacers (5) being located between said battery module (1) and said first end plate (3) and the other of said insulating spacers (5) being located between said second end plate (4) and said battery module (1).