CN218975566U - Cooling plate and battery pack - Google Patents

Abstract

The utility model belongs to the technical field of batteries, and discloses a cooling plate and a battery pack, wherein a turbulence structure is arranged on the inner wall of a flow channel of the cooling plate, the turbulence structure is a spiral groove which extends along the extending direction of the flow channel and is coaxial with the flow channel, and the arrangement of the turbulence structure not only enlarges the heat absorption area of cooling liquid, but also has a turbulence effect on the cooling liquid, thereby effectively improving the heat absorption efficiency of the cooling liquid and further improving the cooling effect of the cooling plate on an electric core.

Description

Cooling plate and battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to a cooling plate and a battery pack.

Background

The electric core in the battery module can send a large amount of heat in charge-discharge process, in order to cool down for the electric core, can set up the cooling plate in the battery box generally for absorb the heat that the electric core sent, in order to ensure that the electric core can maintain the work in safe temperature range.

In the prior art, the cooling liquid flow channel of the cooling plate is of a through groove structure, cooling liquid enters the cooling liquid flow channel from one end of the through groove and flows along the extending direction of the through groove, then the cooling liquid flow channel is discharged from the other end of the through groove, and the cooling liquid absorbs heat emitted by the battery cell when flowing in the through groove, so that the cooling plate has the effect of cooling the battery cell.

However, the cooling plate has very limited cooling effect for the battery cell, specifically, the flow velocity of the cooling liquid in the through groove is large, so that the cooling liquid is difficult to form turbulence in the through groove, the heat absorption efficiency of the cooling liquid is reduced, meanwhile, the contact area between the cooling liquid and the inner wall of the through groove is limited, the heat absorption efficiency of the cooling liquid is reduced, and the cooling effect of the cooling plate on the battery cell is reduced.

Therefore, there is a need to provide a cooling plate and a battery pack to solve the above-mentioned problems.

Disclosure of Invention

An object of the present utility model is to provide a cooling plate capable of providing a high heat absorption efficiency to a cooling liquid flowing in a flow passage.

To achieve the purpose, the utility model adopts the following technical scheme:

the cooling plate is provided with a flow channel, cooling liquid circulates in the flow channel, a turbulent flow structure is arranged on the inner wall of the flow channel, and the turbulent flow structure is a spiral groove which extends along the extending direction of the flow channel and is coaxial with the flow channel.

Optionally, the turbulence structure includes at least two turbulence grooves, the at least two turbulence grooves are communicated, and groove depths of the at least two turbulence grooves are different from each other.

Optionally, the groove depths of the at least two turbulence grooves are gradually increased along the extending direction of the flow channel.

Optionally, in the extending direction of the flow channel, the depth of the latter one of the two adjacent flow-disturbing grooves is 1-2 times that of the former one.

Optionally, the turbulent flow structure further comprises at least one transition groove, two adjacent turbulent flow grooves are communicated through the transition groove, and the groove depth of the transition groove is smaller than the groove depth of the turbulent flow groove adjacent to the transition groove along the extending direction of the flow passage.

Optionally, the groove depth of the transition groove is 10% -60% of the groove depth of the disturbing groove adjacent to the transition groove along the extending direction of the flow channel.

Optionally, the turbulent flow structure includes a first turbulent flow groove, a second turbulent flow groove and a first transition groove, and the first turbulent flow groove, the first transition groove and the second turbulent flow groove are sequentially communicated along the extending direction of the flow channel.

Optionally, the groove depth d of the first transition groove is 10% -30% of the groove depth b of the second flow-disturbing groove.

Optionally, the turbulent flow structure further comprises a second transition groove and a third turbulent flow groove, and the second turbulent flow groove, the second transition groove and the third turbulent flow groove are sequentially communicated along the extending direction of the runner.

Optionally, the groove depth f of the second transition groove is 30% -60% of the groove depth c of the third flow disturbing groove.

Optionally, the groove depth a of the first flow-disturbing groove is 10% -30% of the radius of the flow channel.

Optionally, the cross section of the flow disturbing groove is trapezoid, and the bottom of the trapezoid faces to the axis direction of the flow channel.

Optionally, the trapezoid is an isosceles trapezoid.

Optionally, the included angle between the lower bottom and the waist of the isosceles trapezoid is a lower bottom angle, and the lower bottom angles of the at least two turbulent flow grooves are gradually increased along the extending direction of the runner.

Optionally, the included angle between the lower bottom and the waist of the isosceles trapezoid is a lower bottom angle, the turbulence structure comprises a first turbulence groove and a second turbulence groove, the first turbulence groove and the second turbulence groove are sequentially communicated along the extending direction of the runner, the range of the lower bottom angle beta of the first turbulence groove is 15-45 degrees, and the range of the lower bottom angle gamma of the second turbulence groove is 25-60 degrees.

Optionally, the turbulent flow structure further comprises a third turbulent flow groove, the first turbulent flow groove, the second turbulent flow groove and the third turbulent flow groove are sequentially communicated along the extending direction of the flow channel, and the lower base angle delta of the third turbulent flow groove ranges from 40 degrees to 75 degrees.

Optionally, the number of the turbulence structures is multiple, and the multiple turbulence structures are sequentially arranged along the extending direction of the flow channel.

Optionally, the plurality of turbulence structures are arranged at intervals along the extending direction of the flow channel.

Optionally, the distance h between two adjacent turbulence structures is 1mm-5mm.

Optionally, turbulence structures are arranged on the inner walls of the flow channels from the inlet of the flow channels to the outlet of the flow channels.

Another object of the present utility model is to provide a battery pack having high safety.

To achieve the purpose, the utility model adopts the following technical scheme:

the battery pack comprises a battery box, a battery module and the cooling plate, and the battery module and the cooling plate are all installed in the battery box.

Optionally, the battery module comprises a plurality of electric cores which are sequentially arranged along a preset direction, the outer wall of the cooling plate is a profiling surface, and the profiling surface is matched with the appearance of the electric cores.

Optionally, the electric core is a cylindrical electric core, and the outer wall of the cooling plate is continuous wavy.

The beneficial effects are that:

the cooling plate provided by the utility model is provided with the turbulence structure on the inner wall of the flow channel, the turbulence structure is the spiral groove which extends along the extending direction of the flow channel and is coaxial with the flow channel, the cooling liquid can be contacted with the inner wall of the flow channel and also contacted with the bottom and the side wall of the groove, the heat absorption area of the cooling liquid is effectively enlarged, the effect of improving the heat absorption efficiency of the cooling liquid is achieved, meanwhile, the spiral groove forms the turbulence effect on the cooling liquid, so that the cooling liquid can form turbulence in the flow channel, the heat absorption efficiency of the cooling liquid is further improved, and the cooling effect of the cooling plate provided by the utility model on the battery core is further improved.

According to the battery pack provided by the utility model, the cooling plate is adopted, so that the cooling plate can efficiently absorb heat emitted by the battery core in the battery module, the probability of thermal runaway of the battery core due to overhigh temperature is reduced, and the safety of the battery pack is effectively improved.

Drawings

FIG. 1 is a schematic diagram of an assembled structure of a cooling plate, a liquid inlet current collector and a liquid outlet current collector provided by the utility model;

FIG. 2 is an enlarged schematic view of the end structure of the cooling plate provided by the present utility model;

FIG. 3 is a cross-sectional view of the intermediate section of the cooling plate provided by the present utility model;

FIG. 4 is a cross-sectional view taken in the X-X direction of FIG. 3;

fig. 5 is a partial enlarged view at a in fig. 4.

In the figure:

100. a cooling plate; 200. a liquid inlet current collector; 300. a liquid-outlet current collector; 110. a flow passage; 120. a turbulence structure; 121. a first flow-disturbing groove; 122. a second flow-disturbing groove; 123. a third flow-disturbing groove; 124. a first transition groove; 125. and a second transition groove.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, 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 indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The present embodiment provides a cooling plate capable of providing a cooling liquid flowing in a flow passage with high heat absorption efficiency.

Specifically, as shown in fig. 1 to 4, the cooling plate 100 is provided with a flow channel 110, a cooling liquid flows in the flow channel 110, a turbulence structure 120 is disposed on an inner wall of the flow channel 110, and the turbulence structure 120 is a spiral groove extending along an extending direction of the flow channel 110 and coaxial with the flow channel 110.

The cooling plate 100 is provided with the turbulence structure 120 on the inner wall of the flow channel 110, the turbulence structure 120 is a spiral groove which extends along the extending direction of the flow channel 110 and is coaxial with the flow channel 110, the cooling liquid can be in contact with the inner wall of the flow channel 110 and also in contact with the bottom and the side wall of the groove, the heat absorption area of the cooling liquid is effectively enlarged, the effect of improving the heat absorption efficiency of the cooling liquid is achieved, meanwhile, the spiral groove has a turbulence effect on the cooling liquid, so that the cooling liquid can form turbulence in the flow channel 110, the heat absorption efficiency of the cooling liquid is further improved, and the cooling effect of the cooling plate 100 provided by the utility model on the battery cell is further improved. The cooling liquid may be a refrigerant or cooling water, as required by specific use.

Alternatively, as shown in fig. 1 to 5, the turbulence structure 120 includes at least two turbulence grooves, for example, the number of the turbulence grooves may be two, three, or four, and the at least two turbulence grooves are communicated, and the groove depths of the at least two turbulence grooves are different, so that the groove depths of the at least two turbulence grooves are set to be different, and as the cooling liquid flows along the extending direction of the flow channel 110, the turbulence effect of each turbulence groove on the cooling liquid will be different along with the difference of the groove depths of the turbulence grooves, which is beneficial to further enhancing the turbulence effect of the turbulence grooves on the cooling liquid, and promoting the turbulence of the cooling liquid, so as to achieve the effect of further improving the heat absorption efficiency of the cooling liquid. For ease of understanding, fig. 5 shows the inner wall of the flow channel 110 in a broken line when the turbulence structure 120 is not provided.

Further, as shown in fig. 1 to 5, along the extending direction of the flow channel 110, the groove depth of at least two turbulence grooves is gradually increased, and the turbulence effect of the turbulence grooves on the cooling liquid is increased along with the increase of the groove depth of the turbulence grooves, so that the structure arrangement gradually increases the turbulence effect received when the cooling liquid flows along the extending direction of the flow channel 110, which is beneficial to making the cooling liquid form better turbulence effect in the flow channel 110, and further improving the heat absorption efficiency of the cooling liquid. Preferably, along the extending direction of the flow channel 110, the depth of the next flow disturbing groove is 1-2 times that of the previous flow disturbing groove, and, for example, the depth of the next flow disturbing groove may be 1-times, 1.2-times, 1.5-times, or 2-times that of the previous flow disturbing groove, so that the cooling liquid can form a better turbulence effect in the flow channel 110, and the depth of the flow disturbing groove can be controlled within a certain range to ensure the structural strength of the cooling plate 100.

Optionally, as shown in fig. 1 to 5, the turbulence structure 120 further includes at least one transition groove, two adjacent turbulence grooves are communicated through the transition groove, and along the extending direction of the flow channel 110, the groove depth of the transition groove is smaller than the groove depth of the turbulence groove adjacent to the transition groove, so as to further enhance the turbulence effect of the turbulence structure 120 on the cooling liquid, further improve the heat absorption efficiency of the cooling liquid, and further ensure the structural strength of the cooling plate 100 to a certain extent. Further, the groove depth of the transition groove is 10% -60% of the groove depth of the disturbing groove adjacent to the transition groove in the extending direction of the flow channel 110, and for example, the groove depth of the transition groove may be 10%, 25%, 45% or 60% of the groove depth of the disturbing groove adjacent to the transition groove in the extending direction of the flow channel 110.

Alternatively, as shown in fig. 1 to 5, the turbulence structure 120 includes a first turbulence groove 121, a second turbulence groove 122, and a first transition groove 124, and the first turbulence groove 121, the first transition groove 124, and the second turbulence groove 122 are sequentially communicated along the extending direction of the flow passage 110. Further, the groove depth b of the second flow-disturbing groove 122 is 1-2 times the groove depth a of the first flow-disturbing groove 121, and the groove depth b of the second flow-disturbing groove 122 may be 1, 1.2, 1.5 or 2 times the groove depth a of the first flow-disturbing groove 121, and the groove depth d of the first transition groove 124 is 10% -30% of the groove depth b of the second flow-disturbing groove 122, and the groove depth d of the first transition groove 124 may be 10%, 25% or 30% of the groove depth b of the second flow-disturbing groove 122, and the like, wherein the preferable 25% is to increase the turbulence effect of the turbulence structure 120 on the cooling liquid as much as possible, and further to increase the heat absorption efficiency of the cooling liquid.

Optionally, as shown in fig. 1 to 5, the spoiler 120 further includes a second transition groove 125 and a third spoiler 123, and the second spoiler 122, the second transition groove 125, and the third spoiler 123 are sequentially communicated along the extending direction of the runner 110. Further, the groove depth c of the third flow disturbing groove 123 is 1-2 times the groove depth b of the second flow disturbing groove 122, and the groove depth c of the third flow disturbing groove 123 may be 1, 1.2, 1.5 or 2 times the groove depth b of the second flow disturbing groove 122, and the groove depth f of the second transition groove 125 may be 30% -60% of the groove depth c of the third flow disturbing groove 123, and the groove depth f of the second transition groove 125 may be 30%, 50% or 60% of the groove depth c of the third flow disturbing groove 123, and the like, wherein 50% is preferable to increase the turbulence effect of the turbulence structure 120 on the cooling liquid as much as possible, and further improve the heat absorbing efficiency of the cooling liquid.

Alternatively, as shown in fig. 1 to 5, the groove depth a of the first flow-disturbing groove 121 is 10% -30% of the radius of the flow channel 110, and for example, the groove depth a of the first flow-disturbing groove 121 may be 10%, 25% or 30% of the radius of the flow channel 110, and preferably 25% is used to avoid the problem that the structural strength of the cooling plate 100 is too low due to the excessive groove depth a of the first flow-disturbing groove 121, and thus the cooling plate 100 is broken by the cooling liquid.

Alternatively, as shown in fig. 1 to 5, the cross section of the flow-disturbing groove is trapezoidal, and the bottom of the trapezoid faces the axial direction of the flow channel 110, so as to achieve the effect of increasing the turbulence of the cooling liquid. Preferably, the trapezoid is an isosceles trapezoid.

Alternatively, as shown in fig. 1 to 5, the included angle between the lower bottom and the waist of the isosceles trapezoid is the lower bottom angle, along the extending direction of the flow channel 110, the lower bottom angles of at least two turbulence grooves are gradually increased, and the turbulence effect of the turbulence grooves on the cooling liquid is increased along with the increase of the lower bottom angle, so when the cooling liquid flows along the extending direction of the flow channel 110, the turbulence effect is gradually increased, which is beneficial to the cooling liquid to form better turbulence effect in the flow channel 110, and further improves the heat absorption efficiency of the cooling liquid, and the pressure drop generated by the cooling liquid flowing through the turbulence grooves is increased along with the decrease of the lower bottom angle, so the structure has the effect of reducing the pressure drop of the cooling liquid.

Preferably, as shown in fig. 1 to 5, the included angle between the lower bottom and the waist of the isosceles trapezoid is a lower bottom angle, the turbulence structure 120 includes a first turbulence groove 121 and a second turbulence groove 122, and the first turbulence groove 121 and the second turbulence groove 122 are sequentially communicated along the extending direction of the flow channel 110, wherein the lower bottom angle β of the first turbulence groove 121 is in a range of 15 ° -45 °, and exemplary, the lower bottom angle β of the first turbulence groove 121 may be 15 °, 25 °, 30 °, 35 ° or 45 °, and preferably 30 °, and the lower bottom angle γ of the second turbulence groove 122 is in a range of 25 ° -60 °, and exemplary, the lower bottom angle γ of the second turbulence groove 122 may be 25 °, 35 °, 45 °, 50 ° or 60 °, and preferably 45 °, so that the turbulence structure 120 can play a good turbulence effect on the cooling liquid without causing a large pressure drop loss on the cooling liquid.

Further, as shown in fig. 1 to 5, the turbulence structure 120 further includes a third turbulence groove 123, and along the extending direction of the flow channel 110, the first turbulence groove 121, the second turbulence groove 122 and the third turbulence groove 123 are sequentially connected, and a lower base angle δ of the third turbulence groove 123 ranges from 40 ° to 75 °, for example, the lower base angle δ of the third turbulence groove 123 may be 40 °, 50 °, 55 °, 65 ° or 75 °, and the like, wherein the turbulence effect on the cooling liquid is further improved and the pressure drop loss caused on the cooling liquid is reduced with 55 °.

Alternatively, as shown in fig. 1 to 5, the number of the turbulence structures 120 is plural, and the plurality of turbulence structures 120 are sequentially disposed along the extending direction of the flow channel 110, so as to improve the turbulence effect on the cooling liquid, and further improve the heat absorption efficiency of the cooling liquid.

Further, as shown in fig. 1 to 5, a plurality of turbulence structures 120 are provided at intervals along the extending direction of the flow channel 110 to reduce the pressure drop loss of the cooling liquid as much as possible. Preferably, the distance h between two adjacent turbulence structures 120 is 1mm-5mm, and for example, the distance h between two adjacent turbulence structures 120 may be 1mm, 2mm, 5mm, or the like, so as to ensure the turbulence effect on the cooling liquid and reduce the pressure drop effect on the cooling liquid.

Optionally, from the inlet of the flow channel 110 to the outlet of the flow channel 110, the inner walls of the flow channel 110 are provided with turbulence structures 120, so that the cooling liquid can be disturbed by the turbulence structures 120 from entering the flow channel 110 to exiting the flow channel 110, and then the cooling liquid can always maintain a turbulent state when flowing in the flow channel 110, thereby improving the heat absorption efficiency of the cooling plate 100 and improving the uniformity of the heat absorption efficiency of the cooling plate 100.

Alternatively, as shown in fig. 1 to 5, the number of the flow channels 110 is plural, the liquid inlet current collector 200 and the liquid outlet current collector 300 are respectively disposed at two ends of the cooling plate 100, the liquid inlet current collector 200 and the liquid outlet current collector 300 are both communicated with the flow channels 110, the cooling liquid enters the flow channels 110 from the liquid inlet current collector 200, flows along the extending direction of the flow channels 110, and then is discharged from the flow channels 110 to enter the liquid outlet current collector 300.

The embodiment also provides a battery pack, which comprises a battery box, a battery module and the cooling plate 100, wherein the battery module and the cooling plate 100 are both installed in the battery box. The battery pack adopts the cooling plate 100, and the cooling plate 100 can efficiently absorb heat emitted by the battery core in the battery module, so that the probability of thermal runaway of the battery core due to overhigh temperature is reduced, and the safety of the battery pack is effectively improved.

Optionally, the battery module includes a plurality of electric cores that arrange in proper order along predetermineeing the direction, and the outer wall of cooling plate 100 is the profile modeling face, and profile modeling face suits with the appearance of electric core, packs into the battery box with cooling plate 100 and battery module after, can reduce the interval between electric core in cooling plate 100 and the battery module as far as possible, and then improves heat transfer efficiency between cooling plate 100 and the electric core.

Alternatively, as shown in fig. 1, the battery cells are cylindrical battery cells, and the outer wall of the cooling plate 100 is in a continuous wavy shape, and further, the outer wall of the cooling plate 100 and the outer wall of the battery cells may be mutually attached, or a gap may be left between the outer wall of the cooling plate 100 and the outer wall of the battery cells, which is required according to actual assembly conditions. In this embodiment, the outer wall of the cooling plate 100 is adhered to the outer wall of the battery cell through heat-conducting glue, so as to achieve close contact between the cooling plate 100 and the battery cell, and improve the cooling effect of the cooling plate 100 on the battery cell.

It is understood that the battery cell may be a square battery cell, and if the battery cell is a square battery cell, the outer wall of the cooling plate 100 is in a flat plate structure.

Optionally, the shape of the flow channel 110 is adapted to the shape of the outer wall of the cooling plate 100, in this embodiment, the outer wall of the cooling plate 100 is in a continuous wavy shape, so that the shape of the flow channel 110 is also in a continuous wavy shape, the bending direction of the flow channel 110 is the same as that of the outer wall of the cooling plate 100, and the bending angle of the flow channel 110 is the same as that of the outer wall of the cooling plate 100, so as to shorten the interval between the cooling liquid in the flow channel 110 and the battery cell, and improve the effect of the cooling liquid absorbing the heat of the battery cell.

The extending direction of the flow channel 110 is from left to right in fig. 4 and 5.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (23)

1. The cooling plate is characterized in that a flow channel (110) is formed in the cooling plate, cooling liquid flows through the flow channel (110), a turbulence structure (120) is arranged on the inner wall of the flow channel (110), and the turbulence structure (120) is a spiral groove extending along the extending direction of the flow channel (110) and coaxial with the flow channel (110).

2. The cooling plate according to claim 1, wherein the spoiler structure (120) comprises at least two spoiler grooves, at least two spoiler grooves are communicated, and groove depths of at least two spoiler grooves are different from each other.

3. The cooling plate according to claim 2, characterized in that the groove depth of at least two of the spoiler grooves increases gradually along the extension direction of the flow channel (110).

4. A cooling plate according to claim 2, wherein the depth of the latter one of two adjacent flow-disturbing grooves is 1-2 times the depth of the former one of the two adjacent flow-disturbing grooves in the direction of extension of the flow channel (110).

5. The cooling plate according to claim 2, wherein the spoiler structure (120) further comprises at least one transition groove, two adjacent spoiler grooves being communicated through the transition groove, and a groove depth of the transition groove being smaller than a groove depth of the spoiler groove adjacent to the transition groove in an extending direction of the flow passage (110).

6. The cooling plate according to claim 5, characterized in that the groove depth of the transition groove is 10-60% of the groove depth of the flow-disturbing groove adjacent thereto in the direction of extension of the flow channel (110).

7. The cooling plate according to claim 1, wherein the flow disturbing structure (120) comprises a first flow disturbing groove (121), a second flow disturbing groove (122) and a first transition groove (124), and the first flow disturbing groove (121), the first transition groove (124) and the second flow disturbing groove (122) are communicated in sequence along the extending direction of the flow passage (110).

8. The cooling plate according to claim 7, characterized in that the groove depth d of the first transition groove (124) is 10% -30% of the groove depth b of the second flow-disturbing groove (122).

9. The cooling plate according to claim 7, wherein the flow disturbing structure (120) further comprises a second transition groove (125) and a third flow disturbing groove (123), and the second flow disturbing groove (122), the second transition groove (125) and the third flow disturbing groove (123) are communicated in sequence along the extending direction of the flow passage (110).

10. The cooling plate according to claim 9, characterized in that the groove depth f of the second transition groove (125) is 30% -60% of the groove depth c of the third flow-disturbing groove (123).

11. The cooling plate according to claim 7, characterized in that the groove depth a of the first flow-disturbing groove (121) is 10-30% of the radius of the flow channel (110).

12. The cooling plate according to claim 2, characterized in that the cross section of the flow-disturbing groove is trapezoidal, and the lower base of the trapezoid faces the axial direction of the flow channel (110).

13. The cooling plate of claim 12, wherein the trapezoid is an isosceles trapezoid.

14. The cooling plate according to claim 13, characterized in that the angle between the lower base and the waist of the isosceles trapezoid is a lower base angle, said lower base angles of at least two of said flow-disturbing grooves increasing gradually along the direction of extension of the flow channel (110).

15. The cooling plate according to claim 13, wherein an included angle between a lower base and a waist of the isosceles trapezoid is a lower base angle, the turbulence structure (120) comprises a first turbulence groove (121) and a second turbulence groove (122), the first turbulence groove (121) and the second turbulence groove (122) are sequentially communicated along an extending direction of the flow channel (110), a lower base angle β of the first turbulence groove (121) ranges from 15 ° to 45 °, and a lower base angle γ of the second turbulence groove (122) ranges from 25 ° to 60 °.

16. The cooling plate according to claim 15, wherein the flow disturbing structure (120) further comprises a third flow disturbing groove (123), the first flow disturbing groove (121), the second flow disturbing groove (122) and the third flow disturbing groove (123) being in communication in sequence along the extending direction of the flow channel (110), the lower base angle δ of the third flow disturbing groove (123) being in the range of 40 ° -75 °.

17. The cooling plate according to any one of claims 1 to 16, wherein the number of the turbulence structures (120) is plural, and the plurality of the turbulence structures (120) are arranged in order along the extending direction of the flow passage (110).

18. The cooling plate according to claim 17, wherein a plurality of the turbulence structures (120) are arranged at intervals along the direction of extension of the flow channel (110).

19. The cooling plate according to claim 18, wherein a distance h between two adjacent spoiler structures (120) is 1mm-5mm.

20. The cooling plate according to any one of claims 1-16, characterized in that the turbulence structures (120) are provided on the inner walls of the flow channels (110) from the inlet of the flow channels (110) to the outlet of the flow channels (110).

21. Battery pack, characterized by comprising a battery compartment, a battery module and a cooling plate (100) according to any of claims 1-20, both the battery module and the cooling plate (100) being mounted in the battery compartment.

22. The battery pack according to claim 21, wherein the battery module includes a plurality of cells arranged in sequence along a predetermined direction, and the outer wall of the cooling plate (100) is a profiling surface, and the profiling surface is adapted to the shape of the cells.

23. The battery pack according to claim 22, wherein the cells are cylindrical cells and the outer wall of the cooling plate (100) is continuously wave-shaped.

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