CN220627924U

CN220627924U - Cooling device, heat exchanger, battery pack and vehicle

Info

Publication number: CN220627924U
Application number: CN202322054507.2U
Authority: CN
Inventors: 商艺宝; 陈晓强; 杜晓冬; 徐超; 董军启
Original assignee: Beijing Chehejia Automobile Technology Co Ltd
Current assignee: Beijing Chehejia Automobile Technology Co Ltd
Priority date: 2023-08-01
Filing date: 2023-08-01
Publication date: 2024-03-19
Anticipated expiration: 2033-08-01

Abstract

The disclosure relates to the technical field of vehicles, in particular to a cooling device, a heat exchanger, a battery pack and a vehicle. The cooling device comprises a flow passage plate, a heat exchange plate and a confluence plate; the flow passage plate and the confluence plate are respectively arranged at two sides of the heat exchange plate; a cooling runner is formed between the runner plate and the heat exchange plate; the bus plate comprises a first connecting surface facing the heat exchange plate, a concave part is formed on the first connecting surface, and the first connecting surface is connected with the heat exchange plate so that the concave part forms a bus flow channel; the inlet joint is communicated with the cooling flow passage, and the outlet joint is communicated with the converging flow passage. According to the cooling device, the converging channel is formed between the converging plate and the heat exchange plate by adding the converging plate, the converging channel is one cavity, the cooling channel is the other cavity, the cooling channel is communicated with the two cavities through the inlet joint and the outlet joint, interference of the inlet and outlet channels is avoided, and the flow distribution of working media in the cooling device is more uniform.

Description

Cooling device, heat exchanger, battery pack and vehicle

Technical Field

The disclosure relates to the technical field of vehicles, in particular to a cooling device, a heat exchanger, a battery pack and a vehicle.

Background

With the technical progress of new energy automobiles, higher requirements are put on the dynamic property, safety and durability of the power battery. The good heat management design can quickly adjust the battery to a proper interval and reduce the temperature difference between the battery cells, so that the battery can finish high-power charge and discharge in a safe state, and meanwhile, the problem that the attenuation of individual battery cells is too fast is avoided.

In a part of whole car heat management scheme, the refrigerant of an air conditioning loop is directly connected into a battery pack to complete heat exchange with an electric core, namely a battery direct cooling technology. The direct cooling battery adopts the refrigerant as heat exchange medium, can take place the phase transition in the heat transfer in-process, compares the liquid cooling battery, and the inhomogeneous condition of reposition of redundant personnel appears more easily, consequently need shunt the refrigeration battery, and after the reposition of redundant personnel, because the runner is more, the problem that the runner interferes appears easily.

Disclosure of Invention

In order to solve the technical problem, the present disclosure provides a cooling device, a heat exchanger, a battery pack and a vehicle.

The present disclosure provides a cooling device including a flow passage plate, a heat exchange plate, and a confluence plate;

the flow passage plate and the confluence plate are respectively arranged at two sides of the heat exchange plate;

a cooling runner is formed between the runner plate and the heat exchange plate;

the bus plate comprises a first connecting surface facing the heat exchange plate, a concave part is formed on the first connecting surface, and the first connecting surface is connected with the heat exchange plate so that the concave part forms a bus flow channel;

the inlet joint is communicated with the cooling flow passage, and the outlet joint is communicated with the converging flow passage.

Further, the runner plate comprises a second connecting surface facing the heat exchange plate, the second connecting surface is provided with a first groove, the second connecting surface is connected with the heat exchange plate, and the cooling runner is formed between the heat exchange plate and the first groove;

the concave part comprises a second groove;

the heat exchange plate is provided with a through hole, and projections of the first groove, the second groove and the through hole have an overlapping area along the stacking direction of the flow passage plate, the heat exchange plate and the bus plate.

Further, the busbar plate comprises a third connection surface facing away from the heat exchange plate;

the area of the confluence plate, which is not provided with a concave part, is provided with an avoidance hole, the avoidance hole penetrates through the third connecting surface and the first connecting surface, and the inlet joint is arranged in the avoidance hole and is connected with the heat exchange plate;

the outlet joint is arranged on the third connecting surface and is connected with the bus plate.

Further, the runner plate is formed with an extension portion, and the second connection surface is disposed on the extension portion;

the projection of the bus plate along the stacking direction of the flow passage plate, the heat exchange plate and the bus plate is positioned at the extension portion.

Further, the cooling flow channel comprises a flow dividing flow channel, a heat exchange flow channel and a flow collecting flow channel;

the flow dividing flow passage, the heat exchange flow passage and the flow collecting flow passage are sequentially communicated;

the collecting flow passage is communicated with the collecting flow passage;

at least part of the flow dividing flow channels and at least part of the flow collecting flow channels are located at the extension portion along the projection of the flow channel plate, the heat exchange plate and the flow collecting plate in the lamination direction.

Further, the heat exchange flow channel comprises at least two sub flow channels;

the sub-flow channels are respectively communicated with the flow dividing flow channel and the flow collecting flow channel;

the sub-flow channels extend to the end parts of the flow channel plates along the length direction of the flow channel plates and are communicated with the current collecting flow channels after being folded once.

Further, the flow dividing flow channel comprises a first flow dividing flow channel and a second flow dividing flow channel, and the flow collecting flow channel comprises a first flow collecting flow channel and a second flow collecting flow channel;

the heat exchange flow channel comprises a plurality of C-shaped first heat exchange channels and a plurality of C-shaped second heat exchange channels, the plurality of first heat exchange channels are arranged at intervals, and the plurality of second heat exchange channels are arranged at intervals;

two ends of the first heat exchange channel are respectively communicated with the first flow dividing flow passage and the first flow collecting flow passage;

and two ends of the second heat exchange channel are respectively communicated with the second shunt flow channel and the second current collecting channel.

Further, the number of the second shunt flow passages is two, and the two second shunt flow passages are symmetrical with respect to the middle line of the width direction of the flow passage plate;

and/or the number of the first collecting flow passages is two, and the two first collecting flow passages are symmetrical relative to the central line of the flow passage plate in the width direction;

and/or the number of the second flow collecting channels is two, and the two second flow collecting channels are symmetrical relative to the middle line of the width direction of the flow channel plate.

Further, at least some of the sub-flow channels have different cross-sectional areas.

A second aspect of the present disclosure provides a heat exchanger comprising the cooling device of the first aspect.

A third aspect of the present disclosure provides a battery pack comprising the heat exchanger of the second aspect.

A fourth aspect of the present disclosure provides a vehicle comprising the battery pack of the third aspect.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the cooling device provided by the embodiment of the disclosure comprises a flow passage plate, a heat exchange plate and a confluence plate; the flow passage plate and the confluence plate are respectively positioned at two sides of the heat exchange plate, and a cooling flow passage is formed between the flow passage plate and the heat exchange plate; the bus plate comprises a first connecting surface facing the heat exchange plate, a concave part is formed on the first connecting surface, and the first connecting surface is connected with the heat exchange plate so that the concave part forms a bus flow channel; the inlet joint is communicated with the cooling flow passage, and the outlet joint is communicated with the converging flow passage. In this disclosed embodiment, through increasing the confluence board, form the confluence passageway between the depressed part of confluence board and the heat transfer board, confluence passageway and cooling runner are located the both sides of heat transfer board respectively, through the entrance joint with exit joint communicate with cooling runner and confluence runner respectively, avoid the entrance and exit runner to interfere, make the reposition of redundant personnel of working medium in cooling device more even.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structure of a battery pack;

FIG. 2 is a schematic view of a cooling device according to an embodiment of the disclosure;

FIG. 3 is a schematic view of a partial structure of a cooling device according to an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view of a center joint mounting structure of a cooling device according to an embodiment of the present disclosure;

fig. 5 is a schematic structural view of a heat exchange plate in a cooling device according to an embodiment of the disclosure;

fig. 6 is a schematic diagram of positions of a bus plate and a heat exchange plate in a cooling device according to an embodiment of the disclosure.

Reference numerals: 1. a cooling device; 2. a box structure; 3 (31, 32, 33), cell group; 11. a flow channel plate; 12. a heat exchange plate; 121. a through hole; 13. a bus plate; 131. a second groove; 132. a through hole; 133. a converging flow passage; 14. a joint; 141. an inlet fitting; 142. an outlet fitting; 110. a cooling flow passage; 111. a first flow dividing channel; 1111. a first sub-flow path of the first flow dividing flow path; 1112. a second sub-flow path of the first flow splitting flow path; 1113. a third sub-flow path of the first flow splitting flow path; 112. a second flow dividing channel; 1121. a first sub-flow path of the second split flow path; 1122. a second sub-flow path of the second split flow path; 1123. a third sub-flow path of the second split flow path; 113. a first collecting flow channel; 1131. a first sub-flow path of the first collecting flow path; 1132. a second sub-flow path of the first flow collecting path; 1133. a third sub-flow path of the first collecting flow path; 114. a second collecting flow path; 1141. a first sub-flow path of the second flow collecting path; 1142. a second sub-flow path of the second collecting flow path; 1143. a third sub-flow path of the second flow collecting path; 115. mounting holes.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

As shown in fig. 1, 2, 3, 4, 5 and 6, the cooling device provided in the embodiment of the present disclosure includes a flow channel plate 11, a heat exchange plate 12 and a bus plate 13; the runner plate 11 and the confluence plate 13 are respectively arranged at two sides of the heat exchange plate 12; cooling channels 110 are formed between the channel plates 11 and the heat exchange plates 12; the confluence plate 13 includes a first connection surface facing the heat exchange plate 12, the first connection surface being formed with a recess portion, the first connection surface being connected with the heat exchange plate 12 such that the recess portion forms a confluence flow passage 133; the inlet joint 141 communicates with the cooling flow passage 110, and the outlet joint 142 communicates with the converging flow passage 133. In the embodiment of the disclosure, through adding the confluence plate 13, a confluence channel is formed between a concave portion of the confluence plate 13 and the heat exchange plate 12, the confluence channel 133 forms a cavity, the cooling channel 110 forms a cavity, the confluence channel 133 and the cooling channel 110 are respectively positioned at two sides of the heat exchange plate 12, and are respectively communicated with the cooling channel 110 and the confluence channel 133 through an inlet joint and an outlet joint, so that interference of the inlet and outlet channels is avoided, and the diversion of working medium in the cooling device is more uniform.

In some specific embodiments, the flow channel plate 11 includes a second connection surface facing the heat exchange plate 12, the second connection surface being provided with a first groove, the second connection surface being connected to the heat exchange plate 12, and the cooling flow channel 110 being formed between the heat exchange plate 12 and the first groove; the recess includes a second groove 131; the heat exchange plate 12 is provided with through holes 121, and projections of the first and second grooves 131 and the through holes 121 have overlapping areas in the stacking direction of the flow path plate 11, the heat exchange plate 12 and the manifold plate 13. The cooling flow passage 110 and the converging flow passage 133 are respectively positioned at the upper side and the lower side of the heat exchange plate 12, and are respectively communicated with the cooling flow passage 110 and the converging flow passage 133 through the inlet joint 141 and the outlet joint 142, so that the interference of the inlet flow passage and the outlet flow passage can be avoided, and the flow distribution of the working medium in the cooling device is more uniform.

In some specific embodiments, the busbar 13 comprises a third connection face facing away from the heat exchange plate 12; the area of the confluence plate 13 without a concave part is provided with an avoidance hole, the avoidance hole penetrates through the third connecting surface and the first connecting surface, and the inlet joint 141 is arranged in the avoidance hole and is connected with the heat exchange plate 12; the outlet connector 142 is disposed on the third connection surface and connected to the bus plate 13. The inlet joint 141 and the outlet joint 142 are respectively communicated with the cooling flow passage 110 and the converging flow passage 133, so that interference of inlet and outlet flow passages can be avoided, and the diversion of working medium in the cooling device is more uniform.

The application of the cooling device described in the embodiments of the present disclosure in a power battery pack is shown in fig. 1. The battery pack comprises a cooling device, a box structure and a battery cell group 3. The battery cells are square shell battery cells and are arranged in 6 rows along the y direction shown in fig. 1. The battery pack is defined to be symmetrical about a mid-plane parallel to the xz-plane, so that the cell groups 31, 32, 33 each have symmetrical cell groups about the battery pack symmetry plane. The features on one side of the plane of symmetry are mainly described below.

The exploded view of the cooling device is shown in fig. 2, and mainly comprises a runner plate 11, a heat exchange plate 12, a bus plate 13 and a joint 14. The flow channel plate 11 is a stamping and brazing process, and forms a first groove, namely the main flow channel characteristic of the cooling device, and the main function is to organize the flow of the refrigerating medium in the battery pack. The heat exchange plate 12 is a flat plate and is connected with the runner plate 11 through brazing to form a runner cavity. The flow field plate 11 and the heat exchange plate 12 each include a plurality of punched features to complete the connection with the battery case. The bus plate 13 is a brazing process, and is connected to the heat exchange plate 12 by brazing. The cooling device includes an inlet joint 141 and an outlet joint 142, and may be connected to the flow path plate 11 and the manifold plate 13 by brazing or laser welding, respectively. The inlet connector 141 and the outlet connector 142 may each be a water nozzle.

The detailed features of the cooling device in the vicinity of the inlet joint 141 and the outlet joint 142 are shown in fig. 3, and the inlet joint 141 passes through the through hole 132 in the manifold plate 13 and is welded to the heat exchange plate 12. The heat exchange plate 12 includes a plurality of through holes 121, and the refrigerant passes through the inlet joint 141 and enters the cavity of the cooling flow channel 110 formed by the heat exchange plate 12 and the flow channel plate 11, as shown in fig. 4. The refrigerant entering the cooling flow passage 110 exchanges heat with the battery core in the battery pack through the cooling flow passage 110, and then the through holes 121 enter the converging flow passage 133 formed by the converging plate 13 and the heat exchange plate 12. The manifold 13 includes a stamped feature of the second groove 131 that is pi-shaped to allow the refrigerant in the manifold channel 133 to converge to the outlet connector 142 to the outside of the battery pack.

In some specific embodiments, the cooling flow channels 110 include a flow diversion channel, a heat exchange flow channel, and a flow collection channel; the flow dividing flow passage, the heat exchange flow passage and the flow collecting flow passage are communicated in sequence; the collecting flow passage is communicated with the collecting flow passage 133; at least part of the flow distribution channels and at least part of the flow collection channels are located at the extension in the projection of the stacking direction of the flow channel plate 11, the heat exchange plate 12 and the manifold plate 13.

Through the communication of the inlet joint 141 and the flow dividing flow passage, the communication of the outlet joint 142 and the converging flow passage 133 can avoid the interference of flow passages, so that the flow division of the working medium in the cooling device is more uniform. Specifically, the working medium enters the flow dividing channel from the inlet joint 141, flows into the heat exchange channel after being divided from the flow dividing channel, flows into the flow collecting channel along the heat exchange channel, flows into the flow collecting channel 133 from the flow collecting channel, and finally is discharged from the outlet joint 142. Through design busbar 13, make battery inlet connection 141 and outlet connection 142 move to the battery package outside, saved the inside arrangement space of battery package, avoided the complicated design and the weight cost of direct cooling pipeline. The flow splitting feature of the flow channel is concentrated near the inlet joint 141, so that the refrigerant can be split at low dryness, and the flow uniformity is improved.

In some embodiments, the heat exchange flow channel comprises at least two sub-flow channels; the sub-runners are respectively communicated with the flow dividing runners and the flow collecting runners. Through a plurality of sub-runners, the sub-runners with a C-shaped trend are arranged below each row of the battery cell groups, so that the temperature among the battery cells in the battery cell groups can be more uniform.

In some embodiments, the flow-splitting channels include a first flow-splitting channel 111 and a second flow-splitting channel 112, and the flow-collecting channels include a first flow-collecting channel 113 and a second flow-collecting channel 114; the heat exchange flow channel comprises a plurality of C-shaped first heat exchange channels and a plurality of C-shaped second heat exchange channels, the plurality of first heat exchange channels are arranged at intervals, and the plurality of second heat exchange channels are arranged at intervals; both ends of the first heat exchange channel are respectively communicated with the first flow dividing channel 111 and the first flow collecting channel 113; both ends of the second heat exchange channel are respectively communicated with the second flow dividing flow channel 112 and the second flow collecting flow channel 114.

As shown in fig. 5, the flow diversion channel includes a first flow diversion channel 111 and a second flow diversion channel 112. The collecting flow passages include a first collecting flow passage 113 and a second collecting flow passage 114,

the first heat exchange channel includes: a first sub-flow passage 1111 of the first split flow passage and a first sub-flow passage 1141 of the second combined flow passage connected to each other; a second sub-runner 1112 of the first split runner and a second sub-runner 1142 of the second combined runner connected to each other; a third sub-flow path 1113 of the first split flow path and a third sub-flow path 1143 of the second combined flow path, etc. connected to each other.

The second heat exchange channel comprises phases: a first sub-runner 1121 of the second split runner and a first sub-runner 1131 of the first combined runner connected to each other; a second sub-runner 1122 of the second split runner and a second sub-runner 1132 of the first combined runner connected to each other; a third sub-runner 1123 of the second flow separation runner and a third sub-runner 1133 of the first flow collection runner, etc. connected to each other.

The cooling flow path 110 enters the first sub-flow path 1111, the second sub-flow path 1112, the third sub-flow path 1113, the first sub-flow path 1121, the second sub-flow path 1122, and the third sub-flow path 1123 of the first and second sub-flow paths from the left side in the figure via the first and second sub-flow paths 111 and 112; the cooling plate is folded back after reaching the right side of the cooling plate along the x direction, and then returns to the first sub-runner 1141 of the second current collecting runner, the second sub-runner 1142 of the second current collecting runner, the third sub-runner 1143 of the second current collecting runner, the first sub-runner 1131 of the first current collecting runner, the second sub-runner 1132 of the first current collecting runner and the third sub-runner 1133 of the first current collecting runner along the x direction, finally enters the current collecting runner 133 through the second current collecting runner 114 and the first current collecting runner 113, and finally is discharged from the outlet joint 142 of the current collecting runner 133.

Specifically, as shown in fig. 5, the refrigerant is split from the inlet of the inlet joint 141 into the first split runner 111, the second split runner 112, and the symmetrical runners of the second split runner 112. Wherein the first split runner 111 is split into a first sub runner 1111 of the first split runner, a second sub runner 1112 of the first split runner, a third sub runner 1113 of the first split runner, and symmetrical runners thereof; the second split runner 112 splits into a first sub-runner 1121 of the second split runner, a second sub-runner 1122 of the second split runner, and a third sub-runner 1123 of the second split runner; the cooling plate is folded back after reaching the right side of the cooling plate along the x direction, and then returns to the first sub-runner 1141 of the second current collecting runner, the second sub-runner 1142 of the second current collecting runner, the third sub-runner 1143 of the second current collecting runner, the first sub-runner 1131 of the first current collecting runner, the second sub-runner 1132 of the first current collecting runner and the third sub-runner 1133 of the first current collecting runner along the x direction, finally enters the current collecting runner 133 through the second current collecting runner 114 and the first current collecting runner 113, and finally is discharged from the outlet joint 142 of the current collecting runner 133.

The symmetrical flow paths of the second split flow path 112 are the same. Each sub-flow passage extends from the left side to the right side in the figure, avoids the mounting hole 115 midway, is bent in a C shape on the right side, and returns to the left side. The first sub-flow channel 1141 of the second flow collecting channel, the second sub-flow channel 1142 of the second flow collecting channel, and the third sub-flow channel 1143 of the second flow collecting channel merge into the first sub-flow channel 1131 of the first flow collecting channel and the second flow collecting channel 114; the second sub-flow channel 1132 of the first flow collecting channel and the third sub-flow channel 1133 of the first flow collecting channel are converged to the first flow collecting channel 113, and further converged to the outlet through the flow collecting channel 133.

Thus, the first sub-runner 1111 of the first split runner, the second sub-runner 1112 of the first split runner, and the third sub-runner 1113 of the first split runner correspond to the cell group 31, the first sub-runner 1121 of the second split runner, the second sub-runner 1122 of the second split runner, and the third sub-runner 1123 of the second split runner correspond to the cell group 32, and the first sub-runner 1131 of the first current collecting runner, the second sub-runner 1132 of the first current collecting runner, and the third sub-runner 1133 of the first current collecting runner correspond to the cell group 33. Taking the cooling working condition as an example, in the cell group 31, the bottom flow channels of the cell at the leftmost position in fig. 5 have 6 sub-flow channels in total, wherein the working medium in 3 flow channels is closest to the flow dividing flow channels and corresponds to the lowest working medium temperature, and the working medium in 3 flow channels is farthest from the inlet and corresponds to the highest working medium temperature. By the method, the average temperature of the refrigerating medium below each cell in the cell group 31 can be close, and the temperature uniformity among the cells is facilitated. The cell groups 32 and 33 are similar.

Preferably, the characteristic positions of the first and second diversion channels 111 and 112 for diversion to the sub-channels are close to the inlet joint 141, and no battery cell is arranged above the sub-channels. Therefore, before the diversion, the refrigeration working medium does not exchange heat with the battery cell, so that the dryness is kept low, and the uniformity of the diversion is facilitated.

In some embodiments, the sub-channels extend to the ends of the flow channel plate 11 along the length direction of the flow channel plate 11, and then are connected with the collecting channels after being folded back once. Through the design of the confluence plate 13, the uniform distribution of the refrigerating working medium is realized, and the C-shaped bending flow passage design is adopted for each row of electric cores, so that the temperature uniformity among the electric cores in each row is realized. The design moves the inlet and outlet connectors 142 out of the battery pack, so that the internal space of the battery pack is saved, and the complicated design and weight cost of the pipeline are avoided.

In some embodiments, the cooling flow channels 110 are symmetrical about a centerline of the flow field plate 11 in the width direction.

In some embodiments, the number of the second flow-dividing channels 112 is two, and the two second flow-dividing channels 112 are symmetrical about a center line in the width direction of the flow channel plate 11; and/or the number of the first collecting channels 113 is two, and the two first collecting channels 113 are symmetrical with respect to a center line of the channel plate 11 in the width direction; and/or the number of the second collecting channels 114 is two, and the two second collecting channels 114 are symmetrical with respect to a center line of the flow field plate 11 in the width direction.

In some embodiments, at least some of the sub-flow channels differ in cross-sectional area. The cross-sectional areas of the first flow dividing channel 111, the second flow dividing channel 112, the first flow collecting channel 113 and the second flow collecting channel 114 are non-uniform, and can be achieved by changing the channel width or the stamping depth of the first groove. So as to realize the flow uniformity in each sub-runner and improve the temperature uniformity among the battery cells.

In some specific embodiments, the runner plate 11 is formed with an extension portion, and the second connection surface is disposed on the extension portion; the projection of the manifold plate 13 in the stacking direction of the flow path plate 11, the heat exchange plate 12, and the manifold plate 13 is located at the extension portion. The inlet connector 141 and the outlet connector 142 are both provided at the extension. The design moves the inlet and outlet connectors 142 out of the battery pack, so that the internal space of the battery pack is saved, and the complicated design and weight cost of the pipeline are avoided.

Optionally, the C-shaped features of the first sub-runner 1111 of the first sub-runner, the second sub-runner 1112 of the first sub-runner, and the third sub-runner 1113 of the first sub-runner move to the right to the edge of the cold plate to provide cooling for the electrical connection assembly within the cell.

Optionally, the number of the channels below each cell group is not limited to 6, and the width, the height and the number of the channels can be adjusted according to the size of the cell in the y direction and the pressure resistance and the flow resistance requirements of the direct cooling plate.

Alternatively, the axes of the inlet and outlet fittings 141, 142 may be offset from the center line to accommodate different external plumbing requirements.

Optionally, the axes of the inlet connector 141 and the outlet connector 142 are in the same yz plane, so as to save space occupied by the battery in the x direction.

The heat exchanger provided by the embodiment of the disclosure comprises a cooling device provided by the embodiment of the disclosure. The battery pack provided by the embodiment of the disclosure comprises the heat exchange device provided by the embodiment. The vehicle provided by the embodiment of the disclosure comprises the battery pack provided by the embodiment.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

The above is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The cooling device is characterized by comprising a flow passage plate, a heat exchange plate and a confluence plate;

2. A cooling device according to claim 1, wherein the flow field plate comprises a second connection surface facing the heat exchanger plate, the second connection surface being provided with a first groove, the second connection surface being connected to the heat exchanger plate, the heat exchanger plate and the first groove forming the cooling flow field therebetween;

the concave part comprises a second groove;

3. A cooling device according to claim 1, characterized in that the busbar comprises a third connection surface facing away from the heat exchanger plate;

4. The cooling device according to claim 2, wherein the flow passage plate is formed with an extension portion, and the second connection surface is provided to the extension portion;

5. The cooling device of claim 4, wherein the cooling flow channel comprises a flow diversion channel, a heat exchange flow channel, and a flow collection channel;

the collecting flow passage is communicated with the collecting flow passage;

6. The cooling device of claim 5, wherein the heat exchange flow path comprises at least two sub-flow paths;

7. The cooling device of claim 6, wherein the flow diversion channel comprises a first flow diversion channel and a second flow diversion channel, and the flow collection channel comprises a first flow collection channel and a second flow collection channel;

8. The cooling device according to claim 7, wherein the number of the second flow dividing passages is two, and the two second flow dividing passages are symmetrical with respect to a center line in a width direction of the flow passage plate;

9. The cooling device of claim 6, wherein at least some of the sub-flow passages differ in cross-sectional area.

10. A heat exchanger comprising a cooling device according to any one of claims 1 to 9.

11. A battery pack comprising the heat exchanger of claim 10.

12. A vehicle comprising the battery pack of claim 11.