CN115172945A - Battery cooling plate - Google Patents

Abstract

The application relates to battery cooling technology field especially relates to a battery cooling plate, and this cooling plate includes: the substrate assembly comprises a first substrate and a second substrate which are oppositely arranged; the bracket component is arranged between the first substrate and the second substrate and comprises an annular framework and a sealing element, and the annular framework is arranged around the edge circumferences of the first substrate and the second substrate so as to support the first substrate and the second substrate; the sealing element is arranged on the annular framework, and at least part of the sealing element is respectively positioned between the annular framework and the first substrate and between the annular framework and the second substrate, so that a sealed cavity for medium flowing is formed by the annular framework, the first substrate and the second substrate. This application advantage lies in: the rapid production of battery cooling plates with different specifications and sizes can be realized, and the production period is shortened; through the sealing connection of sealing member and first base plate and second base plate, greatly reduced sealing connection's the degree of difficulty, effectively practice thrift the processing cost and improve production speed.

Description

Battery cooling plate

Technical Field

The application relates to the technical field of battery cooling, in particular to a battery cooling plate.

Background

In order to improve the driving mileage of the electric automobile and save the occupied space of the battery pack, the energy density and the space requirements of the battery pack are higher and higher, meanwhile, the rapid development of the electric automobile is more and more severe in the requirements on the development cycle and the cost of the product, and in addition, the sizes of the battery packs of each host factory are different, so that the size standardization is difficult to realize. The battery pack comprises a battery module and a battery cooling plate arranged on the outer side of the battery module and used for cooling the battery module.

When battery packs with different sizes are manufactured, the cost for changing the structural size of the battery cooling plate is high, so that the processing period of the battery cooling plate is prolonged, and the processing cost is increased; the battery cooling plate is welded around the battery cooling plate to achieve the sealing performance of the battery cooling plate, the battery cooling plate is integrally welded, the welding workload is large, the requirement on welding equipment is high, the welding equipment is difficult to be suitable for the whole-day welding of the battery cooling plate with any size, the structure of the battery cooling plate in the prior art is complex, the machining efficiency of the battery cooling plate is further reduced, the product development period and the cost are greatly improved, and the battery cooling plate is difficult to adapt to increasingly severe production requirements.

Disclosure of Invention

Accordingly, there is a need for a battery cooling plate having a simple structure, a simple and convenient size change, and a simplified manufacturing process.

In view of the above technical problems, the present application provides the following technical solutions:

a battery cooling plate, comprising: the substrate assembly is provided with a medium inlet and a medium outlet; the substrate assembly comprises a first substrate and a second substrate, and the first substrate and the second substrate are arranged oppositely; the bracket assembly is arranged between the first substrate and the second substrate and comprises an annular framework and a sealing element, and the annular framework is arranged around the peripheries of the first substrate and the second substrate so as to support the first substrate and the second substrate; the sealing element is arranged on the annular framework, and at least part of the sealing element is respectively positioned between the annular framework and the first substrate and between the annular framework and the second substrate, so that a cavity which is sealed and allows a medium to flow is formed between the annular framework and the first substrate and between the annular framework and the second substrate; wherein the medium inlet and the medium outlet are in communication with the chamber, respectively.

In one embodiment, a first groove is formed on the surface of the annular framework facing the first substrate, and a second groove is formed on the surface of the annular framework facing the second substrate; the first groove and the second groove are internally provided with the sealing elements respectively, and the sealing elements correspondingly seal gaps between the annular framework and the first substrate and gaps between the annular framework and the second substrate.

In one embodiment, the bracket assembly further includes a positioning frame, the positioning frame is respectively disposed in the first groove and the second groove, a positioning groove is formed in the positioning frame, and the sealing element is mounted in the positioning groove.

In one embodiment, along the circumference of annular skeleton, annular skeleton includes a plurality of first skeletons and a plurality of second skeleton, two adjacent be equipped with one between the first skeleton the second skeleton, just the both ends of second skeleton respectively with two adjacent first skeleton concatenation.

In one embodiment, the positioning frame comprises a first positioning frame and a second positioning frame, the first positioning frame corresponds to the first framework, and the second positioning frame corresponds to the second framework and is spliced with the first positioning frame; wherein, follow the thickness direction of annular skeleton, first skeleton with the concatenation position of second skeleton with first locating rack with the concatenation position dislocation set of second locating rack.

In one embodiment, one side of the annular framework facing the first substrate is provided with a first attaching plane, and the first attaching plane is used for attaching the first substrate; the annular framework faces one side of the second substrate and is provided with a second attaching plane, and the second attaching plane is used for attaching to the second substrate.

In one embodiment, the annular framework comprises a first split body and a second split body along the thickness direction of the annular framework, and the first split body and the second split body are arranged in a stacked mode; the first groove is formed in one side, facing the first substrate, of the first split body, and the second groove is formed in one side, facing the second substrate, of the second split body.

In one embodiment, the rack assembly further comprises a flow divider disposed within the chamber to divide the chamber into at least two portions in communication with each other and in fluid communication with the medium.

In one embodiment, the number of the shunting frames is multiple; along the length direction of the annular framework, the annular framework is provided with a first inner side wall and a second inner side wall which are oppositely arranged; the plurality of the shunt frames are arranged at intervals along the width direction of the annular framework; one end of one of the two adjacent shunting frames is connected with the first inner side wall of the annular framework, and the other end of the shunting frame is continued towards the second inner side wall and is arranged at intervals with the second inner side wall; one end of the other shunt frame is connected to the second inner side wall, and the other end of the shunt frame extends towards the first inner side wall and is arranged at intervals between the first inner side wall and the second inner side wall.

In one embodiment, the number of the shunt frames is multiple, and the shunt frames are arranged at intervals along the width direction of the annular framework to form a shunt frame layer; each flow distribution frame layer comprises a plurality of flow distribution plates, the flow distribution plates are obliquely arranged along the same direction and are distributed at intervals along the length direction of the annular framework, so that an auxiliary flow channel is formed between every two adjacent flow distribution plates.

Compared with the prior art, the battery cooling plate is formed by surrounding the first substrate and the second substrate and the support assembly, the structure is simple, the installation is convenient, and the production efficiency is improved; the bracket assembly comprises an annular framework for supporting and a sealing element for sealing, and the size of the annular framework and the length and width of the corresponding first substrate and second substrate can be changed, so that the battery cooling plates with different specifications and sizes can be rapidly produced, and the production period is shortened; furthermore, through the sealing connection of the sealing element and the first substrate and the second substrate, the conventional integral welding of the edge of the first substrate and the edge of the second substrate is avoided, the requirement on welding equipment is reduced, the difficulty of the sealing connection is greatly reduced, the processing cost is effectively saved, the production efficiency is further improved, and the production period is shortened.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is an exploded view of a battery cooling plate according to an embodiment of the present application.

Fig. 2 is a schematic structural view of a bracket assembly according to an embodiment of the present application.

Fig. 3 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 2.

Fig. 4 is a sectional view taken along line B-B in fig. 3.

Fig. 5 is a schematic structural view of a bracket assembly according to another embodiment of the present application.

Fig. 6 is a schematic view of an annular frame according to an embodiment of the present application.

Fig. 7 is a schematic view of an annular skeleton according to another embodiment of the present application.

Fig. 8 is a schematic cross-sectional view of an annular skeleton provided in an embodiment of the present application.

FIG. 9 is a cross-sectional view of an annular skeleton according to another embodiment of the present application.

Reference numerals are as follows: 100. a battery cooling plate; 10. a substrate assembly; 11. a first substrate; 12. a second substrate; 13. a media inlet; 14. a media outlet; 20. a bracket assembly; 21. an annular skeleton; 210. a first skeleton; 211. a second skeleton; 212. a first groove; 213. a second groove; 214. a first bonding plane; 215. a second attachment plane; 216. a first inner side wall; 217. a second inner side wall; 218. a first split body; 219. a second body; 22. a shunt frame; 221. a flow distribution plate; 23. a positioning frame; 23a, a first positioning frame; 23b, a second positioning frame; 231. positioning a groove; 24. a first slit; 25. a second slit; 26. a seal member; 30. a main flow channel; 40. and an auxiliary flow passage.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiment in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and therefore the application is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used in the description of the present application are for illustrative purposes only and do not represent the only embodiments.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

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 application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of this application, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the present application provides a battery cooling plate 100 according to an embodiment, the battery cooling plate 100 includes a substrate assembly 10 and a support assembly 20, wherein the substrate assembly 10 is provided with a medium inlet 13 and a medium outlet 14; the substrate assembly 10 includes a first substrate 11 and a second substrate 12, the first substrate 11 and the second substrate 12 are disposed opposite to each other; the bracket assembly 20 is arranged between the first substrate 11 and the second substrate 12, the bracket assembly 20 comprises an annular skeleton 21 and a sealing member 26, and the annular skeleton 21 is arranged around the edge circumference of the first substrate 11 and the second substrate 12 to support the first substrate 11 and the second substrate 12; the sealing element 26 is installed on the annular framework 21, and at least part of the sealing element 26 is respectively positioned between the annular framework 21 and the first substrate 11, and between the annular framework 21 and the second substrate 12, so that a cavity which is sealed and is used for medium flowing is defined between the annular framework 21 and the first substrate 11 and between the annular framework 21 and the second substrate 12; wherein the medium inlet 13 and the medium outlet 14 are in communication with the chamber, respectively.

It can be understood that, the battery cooling plate 100 provided by the present application is formed by enclosing the first substrate 11 and the second substrate 12 and the bracket assembly 20, so that the structure is simple, the installation is convenient, and the production efficiency is improved; the bracket assembly 20 comprises an annular framework 21 for supporting and a sealing member 26 for sealing, and the size of the annular framework 21 and the length and width of the corresponding first substrate 11 and second substrate 12 can be changed, so that the rapid production of the battery cooling plates 100 with different specifications and sizes can be realized, and the production cycle can be shortened; further, through the sealing connection of the sealing member 26 with the first substrate 11 and the second substrate 12, the conventional integral welding of the edge of the first substrate 11 and the edge of the second substrate 12 is avoided, the requirement on welding equipment is reduced, the difficulty of the sealing connection is greatly reduced, the processing cost is effectively saved, the production efficiency is further improved, and the production period is shortened.

In one embodiment, the annular framework 21 is connected with the first substrate 11 and the second substrate 12 through local spot welding, and the annular framework 21 is not required to be connected with the first substrate 11 and the second substrate 12 through welding and sealing, so that the welding difficulty is reduced, and the requirement on electric welding equipment is lower. In other embodiments, the manner of connecting the annular frame 21 to the first substrate 11 and the second substrate 12 is not limited to the above, and may be, for example, bonding, or other connection manners.

In one embodiment, as shown in fig. 1, 3, 8 and 9, a first groove 212 is formed on a surface of the annular frame 21 facing the first substrate 11, and a second groove 213 is formed on a surface of the annular frame 21 facing the second substrate 12; wherein, the first groove 212 and the second groove 213 are respectively provided with a sealing member 26 therein, and the sealing member 26 correspondingly seals the gap between the annular framework 21 and the first substrate 11 and the gap between the annular framework 21 and the second substrate 12. So set up, sealing member 26 installs in first recess 212 and second recess 213, and first recess 212 and second recess 213 play spacing and protective effect, avoid sealing member 26 to receive the foreign object damage and take place to shift etc. improve long-term sealed stability. Of course, in other embodiments, the manner of installing the sealing element 26 on the annular frame 21 is not limited to the above embodiments or shown in the drawings, for example, the sealing element 26 may also be wrapped on the inner side of the annular frame 21 and the surface of the annular frame 21 contacting with the first substrate 11 and the second substrate 12, and the annular frame 21 does not need to be grooved.

In one embodiment, referring to fig. 6, along the circumferential direction of the annular frame 21, the annular frame 21 includes a plurality of first frames 210 and a plurality of second frames 211, one second frame 211 is disposed between two adjacent first frames 210, and two ends of the second frame 211 are respectively spliced with two adjacent first frames 210 through the plurality of first frames 210 and the plurality of second frames 211 to form the annular frame 21. So, first skeleton 210 and second skeleton 211 can make by parts to form annular skeleton 21 through the concatenation, the parts are made and to be made first skeleton 210 and second skeleton 211 simultaneously, the great improvement of machining efficiency. Of course, in other embodiments, the processing manner of the annular frame 21 is not limited to the above. For example, as shown in fig. 7, in one embodiment, the annular skeleton 21 is integrally formed. Specifically, the annular frame 21 may be formed by punching a plate material, and the integrally formed annular frame 21 is formed with the first groove 212 and the second groove 213 by punching. For example, the strip-shaped structure may be bent to form an annular skeleton, and the two ends of the strip-shaped structure may be spliced together.

As shown in fig. 6, the first frame 210 is a long strip structure, and the second frame 211 is an arc structure, so as to prevent the edge of the formed annular frame 21 from being sharp, facilitate assembly, and also play a role in reducing stress concentration and improving strength. Of course, other embodiments do not limit the specific structural shapes of the first skeleton 210 and the second skeleton 211.

As shown in fig. 3, the holder assembly 20 further includes a positioning frame 23, the positioning frame 23 is disposed in the first groove 212 and the second groove 213, a positioning groove 231 is disposed on the positioning frame 23, and the sealing element 26 is mounted in the positioning groove 231. The positioning groove 231 positions and supports the sealing element 26, so that the sealing element 26 is prevented from deforming towards two side walls of the groove, the sealing element 26 is ensured to be tightly attached to the first substrate 11 and the second substrate 12, and the sealing element 26 is ensured to be reliably sealed with the first substrate 11 and the second substrate 12.

As shown in fig. 3 and 4, in the present embodiment, the positioning frame 23 includes a first positioning frame 23a and a second positioning frame 23b, the first positioning frame 23a corresponds to the first framework 210, and the second positioning frame 23b corresponds to the second framework 211 and is spliced with the first positioning frame 23 a; the splicing position of the first framework 210 and the second framework 211 and the splicing position of the first positioning frame 23a and the second positioning frame 23b are arranged in a staggered mode. Along the thickness direction of annular skeleton 21, if the concatenation position overlaps, easily lead to this intensity to weaken, and the risk of leaking appears easily, consequently with concatenation position dislocation set in this embodiment, promote the concatenation department of first skeleton 210 and second skeleton 211 and the intensity and the leakproofness of the concatenation department of first locating rack 23a and second locating rack 23 b.

As shown in fig. 4, a first gap 24 is reserved at the joint of the first framework 210 and the second framework 211, a second gap 25 is reserved at the joint of the first positioning frame 23a and the second positioning frame 23b, and the first gap 24 and the second gap 25 are arranged in a staggered manner. The first slit 24 and the second slit 25 are used for filling solder or an adhesive material, and a stable splicing connection of the first frame 210 and the second frame 211 and a stable splicing between the first positioning frame 23a and the second positioning frame 23b are realized.

As shown in fig. 3, a side of the annular frame 21 facing the first substrate 11 has a first attaching plane 214, the first attaching plane 214 is used for supporting the first substrate 11 and attaching to the first substrate 11, a side of the annular frame 21 facing the second substrate 12 has a second attaching plane 215, and the second attaching plane 215 is used for supporting the second substrate 12 and attaching to the second substrate 12, which in turn increases the contact area between the annular frame 21 and the first substrate 11 and the second substrate 12, for example, so as to improve the stability of the connection between the annular frame 21 and the first substrate 11 and the second substrate 12.

As shown in fig. 3, the cross section of the annular skeleton 21 is wavy, wherein the cross section refers to a section along the width direction of the annular skeleton 21, it can be understood that the annular skeleton 21 is wavy by processing, a first groove 212 is formed between two adjacent wave crests, and a second groove 213 is formed between two adjacent wave troughs, so that the groove forming manner is simple and convenient, and is beneficial to reducing the processing cost and improving the processing efficiency. In other embodiments, the shape of the cross section of the annular frame 21 is not limited to the above or shown in the drawings, for example, as shown in fig. 9, the cross section of the annular frame 21 is H-shaped, in other words, the grooves on both sides of the annular frame 21 are arranged in the direction from the first substrate 11 to the second substrate 12 and are axisymmetrically arranged with respect to the axis of the annular frame 21.

In another embodiment, as shown in fig. 8, in the thickness direction of the annular frame 21, the annular frame 21 includes a first division 218 and a second division 219, and the first division 218 and the second division 219 are stacked; the first split 218 opens a first recess 212 on a side facing the first substrate 11, and the second split 219 opens a second recess 213 on a side facing the second substrate 12. Of course, in other embodiments, the specific structure of the ring frame 21 is not limited to the above.

As shown in fig. 2, the bracket assembly 20 further includes a shunt bracket 22, the shunt bracket 22 is disposed in the chamber to divide the chamber into at least two parts which are mutually communicated and allow the medium to flow, so as to increase the flow path of the medium and improve the heat dissipation effect.

As shown in fig. 2, in the present embodiment, one end of the shunt frame 22 is connected to the inner wall of the annular frame 21, and the other end is disposed in a floating manner relative to the inside of the annular frame 21, but of course, the shunt frame 22 may also be connected and fixed to the first substrate 11 and the second substrate 12 to divide the chamber into at least two parts which are communicated with each other and allow the medium to flow through. The distribution frame 22 may be disposed in various ways, and is not limited to the above-mentioned ways.

Further, referring to fig. 2, the number of the shunt frames 22 is plural; along the length direction of the annular framework 21, the annular framework 21 is provided with a first inner side wall 216 and a second inner side wall 217 which are oppositely arranged; wherein, a plurality of shunting frames 22 are arranged at intervals along the width direction of the annular framework 21; in two adjacent shunt brackets 22, one end of one shunt bracket 22 is connected to the first inner side wall 216 of the annular framework 21, and the other end of the shunt bracket 22 is continued to the second inner side wall 217 and is arranged at an interval with the second inner side wall 217; one end of another shunt shelf 22 is connected to the second inner side wall 217, and the other end thereof extends toward the first inner side wall 216 and is spaced from the first inner side wall 216, so that the plurality of shunt shelves 22 further improve the supporting strength of the first substrate 11 and the second substrate 12, and simultaneously separate the chambers to form the curved main flow channel 30, thereby greatly increasing the flow path of the medium and improving the heat exchange effect.

Of course, in other embodiments, the distribution frame 22 is not limited to the above, for example, as shown in fig. 5, a plurality of distribution frames 22 are provided, and the plurality of distribution frames 22 are provided at intervals along the width direction of the ring frame 21 to divide the chamber into the curved main flow passage 30; each flow distribution frame 22 comprises a plurality of flow distribution plates 221, the flow distribution plates 221 are obliquely arranged along the same direction and are arranged at intervals along the length direction of the annular framework 21, so that an auxiliary flow channel 40 is formed between every two adjacent flow distribution plates 221, when a medium flows along the main flow channel 30, part of the medium flows along the auxiliary flow channel, the turbulence of the medium is enhanced, the medium in each region in the chamber flows more uniformly, and the heat dissipation effect is greatly improved. Wherein the plurality of dividing plates 221 are fixed on the first substrate 11 and/or the second substrate 12. In other embodiments, the specific structure of the manifold 22 is not limited to the above.

Preferably, as shown in fig. 2 and 5, the medium inlet 13 and the medium outlet 14 are provided at the beginning and end of the main passage so that the cooling medium can flow toward the end along the beginning of the main passage and flow out from the medium outlet 14 when flowing in from the medium inlet 13.

In one embodiment, the sides of the first substrate 11 and the second substrate 12 facing away from the ring frame 21 are both flat surfaces, so that the battery cooling pack can be in close contact with the battery module to realize heat exchange of the battery module, and both surfaces of the battery cooling plate 100 can realize cooling and heat exchange.

Further, as shown in fig. 1, both sides of the first substrate 11 and the second substrate 12 are flat, so that only a plate needs to be cut during production, the first substrate 11 and the second substrate 12 do not need to be punched to manufacture grooves in which media flow, the processing of the first substrate 11 and the second substrate 12 is simplified, and rapid production according to different specifications and sizes is facilitated.

In one embodiment, the first substrate 11 and the second substrate 12 are made of aluminum, but may be made of thermal conductive plastic or other materials in other embodiments, which is not limited herein.

In summary, the battery cooling plate 100 provided by the present application has the advantages that the difficulty in changing the sizes of the first substrate 11, the second substrate 12 and the annular frame 21 is low, so that the sizes of the first substrate 11, the second substrate 12 and the annular frame 21 can be adjusted according to different size requirements by the battery cooling plate 100 of the present application, and the production efficiency is greatly improved; and the sealing mode among the first substrate 11, the second substrate 12 and the annular framework 21 further simplifies the difficulty of manufacturing the battery cooling plate 100, saves the processing cost, accelerates the production speed and obviously shortens the production period.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims (10)

1. A battery cooling plate, comprising:

the base plate assembly (10) is provided with a medium inlet (13) and a medium outlet (14); the substrate assembly (10) comprises a first substrate (11) and a second substrate (12), wherein the first substrate (11) and the second substrate (12) are arranged oppositely;

a bracket assembly (20) disposed between the first substrate (11) and the second substrate (12), wherein the bracket assembly (20) includes an annular frame (21) and a sealing member (26), and the annular frame (21) is disposed around the edges of the first substrate (11) and the second substrate (12) to support the first substrate (11) and the second substrate (12); the sealing element (26) is arranged on the annular skeleton (21), and at least parts of the sealing element (26) are respectively positioned between the annular skeleton (21) and the first substrate (11) and between the annular skeleton (21) and the second substrate (12), so that a sealed cavity for medium flowing is defined between the annular skeleton (21) and the first substrate (11) and the second substrate (12);

wherein the medium inlet (13) and the medium outlet (14) are in communication with the chamber, respectively.

2. The battery cooling plate according to claim 1, wherein the surface of the annular skeleton (21) facing the first substrate (11) is provided with a first groove (212), and the surface of the annular skeleton (21) facing the second substrate (12) is provided with a second groove (213);

the sealing elements (26) are respectively arranged in the first groove (212) and the second groove (213), and the sealing elements (26) correspondingly seal a gap between the annular framework (21) and the first substrate (11) and a gap between the annular framework (21) and the second substrate (12).

3. The battery cooling plate according to claim 2, wherein the bracket assembly (20) further comprises a positioning frame (23), the positioning frame (23) is disposed in the first groove (212) and the second groove (213), a positioning groove (231) is disposed on the positioning frame (23), and the sealing member (26) is mounted in the positioning groove (231).

4. The battery cooling plate according to claim 3, wherein the annular frame (21) comprises a plurality of first frames (210) and a plurality of second frames (211) along a circumferential direction of the annular frame (21), one second frame (211) is arranged between two adjacent first frames (210), and two ends of the second frame (211) are respectively spliced with two adjacent first frames (210).

5. The battery cooling plate according to claim 4, wherein the positioning frame (23) comprises a first positioning frame (23 a) and a second positioning frame (23 b), the first positioning frame (23 a) corresponds to the first frame (210), the second positioning frame (23 b) corresponds to the second frame (211), and is spliced with the first positioning frame (23 a);

wherein, follow the thickness direction of annular skeleton (21), first skeleton (210) with the concatenation position of second skeleton (211) with the concatenation position dislocation set of first locating rack (23 a) with second locating rack (23 b).

6. The battery cooling plate according to claim 1, wherein the side of the annular backbone (21) facing the first substrate (11) has a first abutment plane (214), the first abutment plane (214) being adapted to abut the first substrate (11); one side of the annular framework (21) facing the second substrate (12) is provided with a second attaching plane (215), and the second attaching plane (215) is used for attaching the second substrate (12).

7. The battery cooling plate according to claim 2, wherein the annular bobbin (21) includes a first divided body (218) and a second divided body (219) in a thickness direction of the annular bobbin (21), the first divided body (218) and the second divided body (219) being stacked; the first groove (212) is opened on one side of the first sub-body (218) facing the first substrate (11), and the second groove (213) is opened on one side of the second sub-body (219) facing the second substrate (12).

8. The battery cooling plate according to claim 1, wherein the bracket assembly (20) further comprises a shunt bracket (22), the shunt bracket (22) being provided within the cavity to divide the cavity into at least two portions communicating with each other and through which the medium flows.

9. The battery cooling plate according to claim 8, wherein the number of the shunt brackets (22) is provided in plurality; the annular framework (21) is provided with a first inner side wall (216) and a second inner side wall (217) which are oppositely arranged along the length direction of the annular framework (21);

wherein the plurality of the shunt brackets (22) are arranged at intervals along the width direction of the annular framework (21); one end of one shunt frame (22) in two adjacent shunt frames (22) is connected to the first inner side wall (216) of the annular framework (21), and the other end of the shunt frame is continued to the second inner side wall (217) and is arranged at intervals with the second inner side wall (217); one end of the other shunt bracket (22) is connected to the second inner side wall (217), and the other end of the other shunt bracket is continued to the first inner side wall (216) and is arranged at an interval with the first inner side wall (216).

10. The battery cooling plate according to claim 8, wherein the number of the shunt brackets (22) is plural, and the plural shunt brackets (22) are arranged at intervals along the width direction of the ring-shaped bobbin (21) to form a shunt bracket (22) layer;

each layer of the flow distribution frame (22) comprises a plurality of flow distribution plates (221), the flow distribution plates (221) are obliquely arranged along the same direction and are distributed at intervals along the length direction of the annular framework (21) so as to form an auxiliary flow channel (40) between every two adjacent flow distribution plates (221).

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