CN220065829U

CN220065829U - Liquid cooling plate for battery pack, battery pack and vehicle

Info

Publication number: CN220065829U
Application number: CN202321576404.6U
Authority: CN
Inventors: 李烨锋; 王玉坤; 唐丽娟
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2023-06-19
Filing date: 2023-06-19
Publication date: 2023-11-21
Anticipated expiration: 2033-06-19

Abstract

The utility model discloses a liquid cooling plate for a battery pack, the battery pack and a vehicle, wherein the liquid cooling plate comprises: a top plate; the runner plate is provided with a connecting surface towards one side of the top plate, and a cooling runner suitable for cooling liquid circulation is formed on the connecting surface; the bonding layer is provided with an avoidance hole which is opposite to the cooling flow passage, and is provided with a first bonding surface and a second bonding surface, the first bonding surface is connected with the top plate, and the second bonding surface is connected with the connecting surface. According to the liquid cooling plate for the battery pack, the problem of brazing flux pollution can be solved, the cleanliness of cooling liquid in the cooling flow channel is improved, and the reliability of the liquid cooling plate is further improved.

Description

Liquid cooling plate for battery pack, battery pack and vehicle

Technical Field

The utility model relates to the field of vehicles, in particular to a liquid cooling plate for a battery pack, the battery pack and a vehicle.

Background

In the related art, a stamping brazing type water cooling plate is mainly adopted as a water cooling plate of a power battery, the water cooling plate is provided with a flat plate and a runner plate, a brazing flux is required to be added between the flat plate and the runner plate in the processing process, however, the brazing flux can react with certain components in cooling liquid, so that the corrosion prevention effect of the cooling liquid is reduced or the long-term protection function is lost, and the cooling system is blocked by reaction products.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a liquid cooling plate for a battery pack, which can solve the problem of flux pollution, improve the cleanliness of the cooling liquid in the cooling flow channel, and further improve the reliability of the liquid cooling plate.

The utility model further provides a battery pack with the liquid cooling plate.

The utility model further provides a vehicle with the battery pack.

According to the liquid cooling plate for a battery pack of the present utility model, the liquid cooling plate includes: a top plate; the runner plate is provided with a connecting surface towards one side of the top plate, and a cooling runner suitable for cooling liquid circulation is formed on the connecting surface; the bonding layer is provided with an avoidance hole which is opposite to the cooling flow passage, and is provided with a first bonding surface and a second bonding surface, the first bonding surface is connected with the top plate, and the second bonding surface is connected with the connecting surface.

According to the liquid cooling plate for the battery pack, which is disclosed by the utility model, the liquid cooling plate is provided with the bonding layer, the bonding layer is provided with the first bonding surface and the second bonding surface, the first bonding surface can be connected with the top plate, the second bonding surface can be connected with the runner plate, the fixing between the top plate and the runner plate is further realized, the problem of brazing flux pollution in the prior art can be solved by adopting the bonding layer to fix the top plate and the runner plate, the cleanliness of cooling liquid in the cooling runner is improved, and the reliability of the liquid cooling plate is further improved.

In some embodiments of the present utility model, the flow passage plate is formed with flow passage grooves recessed toward a direction away from the top plate, the flow passage grooves defining the cooling flow passage therein, the flow passage grooves being configured as a plurality of flow passage grooves arranged in sequence in a length direction of the flow passage plate and communicating with each other.

In some embodiments of the present utility model, a communication hole is formed on the top plate, and the communication hole is disposed opposite to the cooling flow passage; the liquid cooling plate further comprises a connecting pipe, and the connecting pipe penetrates through the communication hole and is suitable for communicating the cooling flow channel with a cooling system.

In some embodiments of the utility model, at least part of the connecting tube is configured as a bellows.

In some embodiments of the present utility model, the battery pack further includes a housing having a receiving groove formed therein for receiving the flow path plate, an inner wall of the receiving groove being provided with a first connection portion; the runner plate is provided with a second connecting portion which is suitable for being fixedly connected with the first connecting portion on one side, away from the top plate.

In some embodiments of the utility model, the second connection portion includes: the connecting seat is formed on one side of the runner plate, which is away from the top plate, and is provided with a containing cavity; the insert is accommodated in the accommodating cavity and fixedly connected with the connecting seat, and the insert is suitable for being matched with the shell.

In some embodiments of the utility model, the insert is circumferentially provided with a mounting projection adapted to mate with an inner wall of the receiving cavity, and the end of the insert is formed with a mounting hole adapted to mate with the first connecting portion.

In some embodiments of the utility model, the adhesive layer is configured as one of polyurethane, silicone, or epoxy, and the flow field plate is configured as an engineering plastic plate.

The battery pack according to the present utility model is briefly described as follows.

The battery pack is provided with the battery module and the liquid cooling plate of the embodiment, the liquid cooling plate is fixedly connected with the battery module, and the liquid cooling plate can be used for cooling the battery module.

The vehicle according to the present utility model is briefly described below.

According to the battery pack provided by the embodiment of the utility model, the battery pack is fixedly adhered to the liquid cooling plate, so that the cleanliness of cooling liquid in the cooling flow passage is ensured, the heat dissipation efficiency of the battery pack is improved, the service life of the battery pack is prolonged, and the overall performance and the driving safety of the vehicle are further improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic view of a liquid cooling plate according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the liquid cooling plate of FIG. 1 at another angle;

FIG. 3 is an exploded view of the liquid cooling plate of FIG. 1;

FIG. 4 is an exploded view of the second connection of FIG. 1;

fig. 5 is a schematic structural view of a case of a battery pack according to an embodiment of the present utility model.

Reference numerals:

100. a liquid cooling plate; 110. a top plate; 111. a communication hole; 120. a flow channel plate; 121. a connection surface; 122. a cooling flow passage; 123. a second connecting portion; 1231. a connecting seat; 1232. a receiving chamber; 1233. an insert; 1234. mounting the bulge; 1235. a mounting hole; 130. an adhesive layer; 131. avoidance holes; 132. a first adhesive surface; 133. a second adhesive surface; 140. a connecting pipe; 141. a bellows; 142. a water inlet; 143. a water outlet; 200. a housing; 210. a first connection portion.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

A liquid cooling plate 100 for a battery pack according to an embodiment of the present utility model will be described below with reference to fig. 1 to 5, the liquid cooling plate 100 including a top plate 110, a flow path plate 120, and an adhesive layer 130. The flow channel plate 120 is provided with a connecting surface 121 towards one side of the top plate 110, a cooling flow channel 122 suitable for cooling liquid circulation is formed on the connecting surface 121, a avoiding hole 131 opposite to the cooling flow channel 122 is formed on the bonding layer 130, the bonding layer 130 is provided with a first bonding surface 132 and a second bonding surface 133, the first bonding surface 132 is connected with the top plate 110, and the second bonding surface 133 is connected with the connecting surface 121.

Specifically, the top plate 110 is disposed at the upper side of the flow channel plate 120, a side of the top plate 110 facing away from the flow channel plate 120 may be provided with a support surface for supporting the battery module, and the material of the top plate 110 may be 5-series or 6-series aluminum, and the thickness of the top plate 110 may be set between 0.8mm and 1.2mm, and the overall strength and flatness of the top plate 110 may be improved by setting the material and thickness of the top plate 110 within the above-described ranges. The runner plate 120 can be provided with the junction surface 121 towards one side of roof 110, can be formed with cooling runner 122 on the junction surface 121, and cooling runner 122 can be used for the circulation of coolant liquid, and then realizes the cooling to the battery package. The cooling flow passage 122 may be configured in plural, and the plural cooling flow passages 122 may be sequentially communicated.

The bonding layer 130 may be formed with an avoidance hole 131, the avoidance hole 131 may be used for avoiding the cooling flow channel 122, and the bonding layer 130 may fix the top plate 110 and the flow channel plate 120, specifically, the bonding layer 130 may be provided with a first bonding surface 132 and a second bonding surface 133, the first bonding surface 132 and the second bonding surface 133 are set away from each other, the first bonding surface 132 may be bonded and fixed with the top plate 110, the second bonding layer 130 may be fixed with the connection surface 121, and the cooling flow channel 122 may be defined between the top plate 110 and the flow channel plate 120, and sealing connection is adopted between the top plate 110 and the flow channel plate 120, thereby preventing leakage of the cooling liquid. The liquid cooling plate 100 adopts a bonding mode to fixedly connect the top plate 110 and the runner plate 120, so that the fixing mode is not needed, the problem of brazing flux pollution in the prior art is solved, the cleanliness of cooling liquid in the cooling runner 122 is improved, and the reliability of the liquid cooling plate 100 is further improved.

In short, the liquid cooling plate 100 of the present utility model has the adhesive layer 130, the adhesive layer 130 has the first adhesive surface 132 and the second adhesive surface 133, the first adhesive surface 132 can be connected with the top plate 110, the second adhesive surface 133 can be connected with the runner plate 120, and further, the fixation between the top plate 110 and the runner plate 120 is realized, and the problem of flux pollution in the prior art can be solved by adopting the adhesive layer 130 to fix the top plate 110 and the runner plate 120, the cleanliness of the cooling liquid in the cooling runner 122 is improved, and further, the reliability of the liquid cooling plate 100 is improved.

As shown in fig. 2, in some embodiments of the present utility model, a flow channel groove is formed on the flow channel plate 120, the flow channel groove may be recessed toward the flow channel plate 120 away from the top plate 110, the flow channel groove may define a cooling flow channel 122, the flow channel groove may be configured in a plurality, and the plurality of flow channel grooves may be sequentially arranged in the length direction of the flow channel plate 120, and two adjacent flow channel grooves may be disposed in communication with each other, thereby increasing a contact area between the cooling liquid and the battery module and further increasing the cooling efficiency of the liquid cooling plate 100.

As shown in fig. 3, in some embodiments of the present utility model, the top plate 110 may be formed with a plurality of communication holes 111, the communication holes 111 may be configured to be disposed opposite to the cooling flow channels 122, the liquid cooling plate 100 may further include connection pipes 140, the connection pipes 140 may be configured to be in one-to-one correspondence with the plurality of communication holes 111, each connection pipe 140 may penetrate the corresponding communication hole 111, and the connection pipes 140 and the communication holes 111 may be fixed in a welded manner, and the connection pipes 140 may communicate the cooling flow channels 122 with the cooling system, thereby achieving a circulating flow of the cooling liquid.

As shown in fig. 1-3, in some embodiments of the utility model, at least a portion of the connection tube 140 may be configured as a bellows 141, the connection tube 140 has a water inlet 142 and a water outlet 143, the water inlet 142 may be in communication with the cooling system, the water outlet 143 may be open to the cooling flow passage 122, the bellows 141 may be configured as a metal piece, and the bellows 141 may adjust the positions of the water inlet 142 and the water outlet 143.

As shown in fig. 5, in some embodiments of the present utility model, the battery pack may include a housing 200, a receiving groove for receiving the flow path plate 120 may be formed in the housing 200, the inner wall of the receiving groove may be provided with a first connection part 210, one side of the flow path plate 120 facing away from the top plate 110 may be provided with a second connection part 123, and the second connection part 123 may be fixedly connected with the first connection part 210, thereby implementing the fixing of the liquid cooling plate 100 on the housing 200.

As shown in fig. 4, in some embodiments of the present utility model, the second connection part 123 may include a connection seat 1231 and an insert 1233, the connection seat 1231 may be disposed at a side of the flow channel plate 120 facing away from the top plate 110, the connection seat 1231 may be fixedly connected with the flow channel plate 120, a receiving cavity 1232 may be formed in the connection seat 1231, the insert 1233 may be received in the receiving cavity 1232, and the insert 1233 may be fixedly connected with the connection seat 1231, the insert 1233 may be mated with the housing 200, further, an outer circumference of the insert 1233 may be provided with a mounting protrusion 1234 circumferentially surrounding, the mounting protrusion 1234 may be mated with an inner wall of the receiving cavity 1232, wherein the mounting protrusion 1234 may be configured in plurality, and the plurality of mounting protrusions 1234 may be disposed at intervals in an extending direction of the insert 1233, by providing the mounting protrusion 1234, a contact area between the insert 1233 and the connection seat 1231 may be increased, and thus a mating strength between the insert 1233 and the connection seat 1231 may be increased, and the insert 1233 may be prevented from falling off from the connection seat 1231. The end of the insert 1233 may be formed with a mounting hole 1235 adapted to be mated with the first connection part 210, and in a specific embodiment, the first connection part 210 and the mounting hole 1235 may be fastened using bolts.

In some embodiments of the present utility model, the adhesive layer 130 may be one of polyurethane, silicone or epoxy, the tensile and shear strength of the adhesive layer 130 may be more than 8Mpa, the pressure resistance and explosion performance requirements of the liquid cooling plate 100 may be met by configuring the adhesive layer 130 as the material, the runner plate 120 is an engineering plastic plate, the heat insulation effect of the runner plate 120 may be improved by configuring the runner plate 120 as the material, and the runner plate 120 may be rapidly subjected to sample ejection by using only one injection mold in a sample stage through a 3D printing or machining manner, thereby improving the processing efficiency of the runner plate 120, reducing the number of molds, and reducing the cost.

According to the battery pack provided with the battery module and the liquid cooling plate 100 in the embodiment, the liquid cooling plate 100 is fixedly connected with the battery module, and the liquid cooling plate 100 can be used for cooling the battery module.

The vehicle according to the present utility model is briefly described below.

According to the battery pack provided with the embodiment, the vehicle is provided with the battery pack provided with the embodiment, so that the battery pack of the vehicle adopts the liquid cooling plate 100 which is fixedly adhered, the cleanliness of cooling liquid in the cooling flow passage 122 is ensured, the heat dissipation efficiency of the battery pack is improved, the service life of the battery pack is prolonged, and the overall performance and the driving safety of the vehicle are further improved.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features.

In the description of the present utility model, "plurality" means two or more.

In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A liquid cooling plate for a battery pack, comprising:

a top plate;

the runner plate is provided with a connecting surface towards one side of the top plate, and a cooling runner suitable for cooling liquid circulation is formed on the connecting surface;

the bonding layer is provided with an avoidance hole which is opposite to the cooling flow passage, and is provided with a first bonding surface and a second bonding surface, the first bonding surface is connected with the top plate, and the second bonding surface is connected with the connecting surface.

2. The liquid cooling plate for a battery pack according to claim 1, wherein a flow channel groove recessed toward a direction away from the top plate is formed in the flow channel plate, the flow channel groove defining the cooling flow channel therein, the flow channel groove being configured as a plurality of flow channel grooves arranged in sequence in a length direction of the flow channel plate and communicating with each other.

3. The liquid cooling plate for a battery pack according to claim 2, wherein a communication hole is formed in the top plate, the communication hole being disposed opposite to the cooling flow passage;

the liquid cooling plate further comprises a connecting pipe, and the connecting pipe penetrates through the communication hole and is suitable for communicating the cooling flow channel with a cooling system.

4. The liquid cooling plate for a battery pack according to claim 3, wherein at least part of the connection pipe is configured as a bellows.

5. The liquid cooling plate for a battery pack according to claim 1, further comprising a housing having an accommodation groove formed therein for accommodating the flow path plate, an inner wall of the accommodation groove being provided with a first connection portion;

the runner plate is provided with a second connecting portion which is suitable for being fixedly connected with the first connecting portion on one side, away from the top plate.

6. The liquid cooling plate for a battery pack according to claim 5, wherein the second connection portion comprises:

the connecting seat is formed on one side of the runner plate, which is away from the top plate, and is provided with a containing cavity;

the insert is accommodated in the accommodating cavity and fixedly connected with the connecting seat, and the insert is suitable for being matched with the shell.

7. The liquid cooling plate for a battery pack according to claim 6, wherein the insert is circumferentially provided with a mounting protrusion adapted to be fitted to an inner wall of the receiving chamber, and an end portion of the insert is formed with a mounting hole adapted to be fitted to the first connecting portion.

8. The liquid cooling plate for a battery pack according to claim 1, wherein the adhesive layer is constructed of one of polyurethane, silicone, or epoxy, and the flow path plate is constructed of an engineering plastic plate.

9. A battery pack, comprising:

a battery module;

a liquid cooling plate configured as the liquid cooling plate according to any one of claims 1 to 8, the liquid cooling plate being fixed to the battery module.

10. A vehicle comprising the battery pack of claim 9.