Liquid cooling assembly, power supply system and vehicle

Abstract

The utility model relates to the technical field of liquid cooling heat dissipation, and provides a liquid cooling assembly, a power supply system and a vehicle. The liquid cooling assembly is used for heat dissipation of the battery, the liquid cooling assembly comprises a runner plate, a cover plate covering the runner plate and a flowing channel at least arranged on the runner plate, the battery is provided with a first temperature area and a second temperature area which are different in temperature, and turbulent flow assemblies are at least arranged in part of the flowing channel corresponding to the first temperature area at intervals. And the width of the flow channel is at least twice that of the turbulent flow assembly. Through the design of the embodiment of the utility model, the liquid cooling assembly can better carry out efficient heat dissipation on the first temperature area with higher temperature in the battery, meanwhile, the temperature difference of the battery is reduced, the temperature of each part of the battery is better balanced, and a good heat dissipation effect and a good temperature difference balance effect are achieved. And moreover, the width of the flowing channel is at least two times of the width of the turbulent flow assembly, so that the blocking effect of the turbulent flow assembly on the flowing of the cooling liquid is reduced, and the heat exchange efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid cooling and heat dissipation, and in particular to a liquid cooling component, a power supply system and a vehicle. Background Art

[0002] Liquid cooling usually has a better heat dissipation effect than air cooling. Therefore, liquid cooling technology is widely used in various fields. For example, power batteries in new energy vehicles usually use liquid cooling components for heat dissipation. Conventional liquid cooling components are composed of heat conducting plates and flow channel plates spliced ​​by brazing or other methods. The heat conducting plates contact the batteries to absorb heat. Flow channels are opened on the flow channel plates for the flow of coolant. The coolant takes away the heat to achieve heat dissipation. In order to meet users' requirements for power battery mileage and charging time, the capacity and power of power batteries are getting higher and higher, and the heat generation of power batteries is also increasing. In addition, as the battery usage time increases, the temperature difference of various parts of the battery gradually increases, which will reduce the overall service life of the battery and cause safety hazards. Conventional liquid cooling components cannot meet the heat dissipation requirements well, nor can they solve the problem of temperature differences well. Utility Model Content

[0003] In view of this, the utility model provides a liquid cooling component, a power system and a vehicle to solve the problems of poor heat dissipation effect of the liquid cooling component and large temperature difference of the battery.

[0004] To solve the above problems, the technical solution of the utility model is achieved as follows:

[0005] A liquid cooling component comprises: a flow channel plate; a cover plate, which is arranged on the flow channel plate; a flow channel, which is at least arranged on the flow channel plate, and is used for cooling liquid to flow so as to exchange heat with the battery; wherein the battery has a first temperature zone and a second temperature zone with different temperatures, and a spoiler component is arranged at intervals in at least a portion of the flow channel corresponding to the first temperature zone, and the spoiler component is used to contact with the cooling liquid to change the flow state of the cooling liquid; along a direction perpendicular to the flow direction of the cooling liquid, the width of the flow channel is at least twice the width of the spoiler component.

[0006] In some embodiments, at least a portion of the surface of the spoiler assembly that is used to contact the coolant is configured as a smooth curved surface.

[0007] In some embodiments, the spoiler assembly includes at least one first spoiler and at least one second spoiler spaced apart from each other; wherein the first spoiler is bent toward one side of the flow channel, and the second spoiler is bent toward the other side opposite to the flow channel.

[0008] In some embodiments, in the same spoiler assembly, the first spoilers and the second spoilers are alternately arranged in sequence along the flow direction of the coolant, and the number of the first spoilers and the number of the second spoilers arranged are equal.

[0009] In some embodiments, there are multiple spoiler assemblies, the distance between two adjacent spoiler assemblies is greater than the length of the first spoiler and the length of the second spoiler, and the length of the first spoiler and the length of the second spoiler are both greater than the distance between the first spoiler and the second spoiler in the same spoiler assembly.

[0010] In some embodiments, the length of the flow channel provided with the spoiler assembly is an integer multiple of the distance between two adjacent spoiler assemblies, and the distance between two adjacent spoiler assemblies is an even multiple of the distance between the first spoiler and the second spoiler in the same spoiler assembly.

[0011] In some embodiments, the first spoiler and / or the second spoiler has a relative head end and a tail end, and the coolant flows through the head end and the tail end successively; wherein the curvature radius of the head end is greater than the curvature radius of the tail end.

[0012] In some embodiments, at least the flow channel corresponding to the first temperature zone includes a plurality of flat flow channels and a plurality of guide flow channels, the flat flow channels are arranged at intervals, and each guide flow channel is connected to at least two adjacent flat flow channels to guide the coolant into the flat flow channel; wherein the spoiler component is arranged in the flat flow channel.

[0013] In some embodiments, the spoiler assembly is disposed on the flow channel plate and / or the cover plate.

[0014] An embodiment of the utility model further provides a power supply system, comprising a battery and the above-mentioned liquid cooling component, wherein the battery is in contact with and connected to the liquid cooling component.

[0015] An embodiment of the utility model further provides a vehicle, comprising a vehicle body and the above-mentioned power supply system, wherein the power supply system is installed on the vehicle body.

[0016] The liquid cooling assembly, power system and vehicle provided by the embodiment of the utility model include a flow channel plate, a cover plate covered on the flow channel plate and a flow channel for the flow of coolant, and a spoiler assembly is arranged at intervals in at least part of the flow channel corresponding to the first temperature zone of the battery, and the width of the flow channel is at least twice the width of the spoiler assembly. The embodiment of the utility model disturbs the coolant by setting a spoiler assembly, changes the flow mode of the coolant from laminar flow to turbulent flow and pulsating flow, thereby effectively improving the heat exchange efficiency of the coolant, and can dissipate heat more efficiently in the first temperature zone of the battery. At the same time, by differentially designing the part of the flow channel corresponding to the first temperature zone and the second temperature zone, the spoiler assembly can be set for the area with higher temperature when the battery is used to improve the heat exchange efficiency, so that the temperature of each part of the battery can be better balanced, and the problem of excessive temperature difference in each part of the battery can be better avoided. Further, by setting the width of the flow channel to at least twice the width of the spoiler assembly, the obstruction of the spoiler assembly to the flow of the coolant is reduced, and the smooth flow of the coolant can be better ensured, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an exploded schematic diagram of a liquid cooling assembly provided by an embodiment of the utility model;

[0018] Figure 2 It is a front view of the flow channel plate provided in an embodiment of the utility model;

[0019] Figure 3 It is a partial schematic diagram of a flow channel with a spoiler component provided by an embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of the flow of the coolant through the spoiler component provided by the embodiment of the utility model.

[0021] Description of reference numerals:

[0022] 1. Flow channel plate; 2. Cover plate; 21. Liquid inlet; 22. Liquid outlet; 3. Flow channel; 31. Flat flow channel; 32. Guide flow channel; 4. Spoiler assembly; 41. First spoiler; 42. Second spoiler; 43. Head end; 44. Tail end. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] The various specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features in the utility model will not be described separately.

[0025] In the following description, the terms "first\second\..." are only used to distinguish different objects, and do not mean that the objects have the same or related points. It should be understood that the directions "above", "below", "outside" and "inside" are all directions in normal use, and the directions "left" and "right" refer to the left and right directions shown in the corresponding schematic diagrams, which may or may not be the left and right directions in normal use.

[0026] It should be noted that the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element. "Multiple" means greater than or equal to two.

[0027] like Figure 1 and Figure 2 As shown, the embodiment of the utility model provides a liquid cooling component that can be used to dissipate heat for a battery, including a flow channel plate 1, a cover plate 2 covering the flow channel plate 1, and a flow channel 3 at least provided on the flow channel plate 1, wherein the flow channel 3 allows the coolant to flow to exchange heat for the battery. The battery has a first temperature zone and a second temperature zone with different temperatures when in use, and a spoiler component 4 is provided at intervals in at least a portion of the flow channel 3 corresponding to the first temperature zone, and the spoiler component 4 is used to contact with the coolant to change the flow state of the coolant.

[0028] Specifically, the liquid cooling component can directly contact the heat generating position of the battery through the flow channel plate 1 or the cover plate 2, and absorb the heat of the battery by contact heat conduction. The coolant flowing in the flow channel 3 keeps in contact with the flow channel plate 1 and the cover plate 2 at the same time, and the flowing coolant can take away the heat absorbed by the flow channel plate 1 or the cover plate 2, thereby achieving the effect of heat dissipation and cooling of the battery. The liquid cooling component is usually also provided with a liquid inlet 21 and a liquid outlet 22 connected to the flow channel 3, and a coolant source is connected through the liquid inlet 21 and the liquid outlet 22 to realize the circulation of the coolant. Among them, the liquid inlet 21 is used for the coolant to flow into the flow channel 3, and the liquid outlet 22 is used for the coolant that has absorbed the heat of the battery to flow out of the flow channel 3.

[0029] Optionally, the liquid inlet 21 and the liquid outlet 22 can be opened on the flow channel plate 1, or on the cover plate 2, or partially on the flow channel plate 1 and partially on the cover plate 2. It is only necessary to connect the liquid inlet 21 and the liquid outlet 22 to the flow channel 3.

[0030] Optionally, the flow channel 3 can be formed on the flow channel plate 1 by cutting or the like, or formed by stamping or the like, or enclosed by structures such as partitions laid on the flow channel plate 1, as long as the coolant can flow along a preset path.

[0031] Optionally, in addition to being arranged on the flow channel plate 1, the flow channel 3 can also be further arranged on the cover plate 2, so that when the cover plate 2 is arranged on the flow channel plate 1, the flow channels 3 respectively arranged on the cover plate 2 and the flow channel plate 1 are combined into a flow channel 3 with a longer path. In this way, the coolant flows in the flow channel 3 for a longer time and can absorb heat more fully. Of course, it is understandable that the flow channel 3 can also be arranged only on the flow channel plate 1, which is conducive to simplifying processing and assembly.

[0032] Specifically, considering that the temperature of the battery is usually not uniform at all places when it is in use, there are temperature differences. This temperature difference may exist between different battery cells in the same group of batteries, between batteries in different groups, or between different positions of the same battery cell. According to the temperature difference when the battery is in use, the heating area of ​​the battery can be divided into at least a first temperature zone and a second temperature zone. For example, taking the average temperature of the first temperature zone as higher than the average temperature of the second temperature zone, the spoiler component 4 is arranged at intervals in at least part of the flow channel 3 corresponding to the first temperature zone. Specifically, when the spoiler component 4 contacts the coolant, it can interfere with the flow state of the coolant, breaking the original uniform flow state of the coolant, that is, the laminar flow state, so that the flow direction and flow velocity of each part of the coolant are different, thereby forming a relatively disordered flow state, that is, a turbulent state. According to the principle of fluid mechanics, the coolant in the laminar flow state will form a thermal boundary layer at the edge of the flow channel 3, which hinders the heat exchange to a certain extent, and the turbulent state can destroy the thermal boundary layer of the laminar flow state. Therefore, the provision of the spoiler component 4 can effectively improve the heat exchange efficiency. By such a design, the liquid cooling component can better dissipate heat for the first temperature zone with a higher temperature to meet the heat dissipation requirements of the first temperature zone. At the same time, the temperature difference between the first temperature zone and the second temperature zone is reduced, and the temperature of each part of the battery can be better balanced. Optionally, the spoiler component 4 can be integrally formed with the flow channel plate 1 or the cover plate 2, or it can be separately set and set in the flow channel 3 by welding or the like. It is only necessary to set the spoiler component 4 in the flow channel 3 to achieve the disturbing effect on the coolant.

[0033] It is understandable that the spoiler assembly 4 can be further arranged in the partial flow channel 3 corresponding to the second temperature zone to improve the heat dissipation efficiency of the liquid cooling assembly to the second temperature zone. In order to reduce the temperature difference between the first temperature zone and the second temperature zone, the number and density of the spoiler assembly 4 can be adjusted so that the spoiler assembly 4 arranged in the partial flow channel 3 corresponding to the first temperature zone is larger in number and density. It is understandable that the heating area of ​​the battery can be further divided into more temperature zones. In the partial flow channels 3 corresponding to different temperature zones, spoiler assemblies 4 of different numbers and densities can be respectively arranged to achieve more targeted battery heat dissipation and more refined temperature difference balance effect. The above implementation scheme can be flexibly designed according to the heat dissipation requirements of the battery, combined with factors such as manufacturing cost, and can also use fluid mechanics simulation analysis technology to determine whether the heat dissipation effect and temperature difference balance effect of the liquid cooling assembly meet the requirements. If it does not meet the requirements, the arrangement of the spoiler assembly 4 can be further adjusted and optimized.

[0034] Furthermore, if Figure 3 As shown, along the direction perpendicular to the flow of the coolant, the width W1 of the flow channel 3 is at least twice the width W2 of the spoiler assembly 4, that is, W1 ≥ 2W2. Specifically, the width W2 of the spoiler assembly 4 generally refers to the width of the entity part of the spoiler assembly 4 that substantially hinders the flow of the coolant. For example, when there is a gap in the spoiler assembly 4, if the gap is available for the flow of the coolant, it is not included in the width of the spoiler assembly 4. When designed in this way, there is sufficient space between the flow channel 3 and the spoiler assembly 4 for the flow of the coolant. When the spoiler assembly 4 disturbs the coolant, it will not significantly hinder the flow of the coolant, thereby better ensuring the smoothness of the flow of the coolant and further improving the heat exchange efficiency.

[0035] The liquid cooling assembly provided in the embodiment of the utility model includes a flow channel plate 1, a cover plate 2 provided on the flow channel plate 1, and a flow channel 3 provided at least on the flow channel plate 1. According to the temperature difference when the battery is used, a spoiler assembly 4 is provided at intervals in at least part of the flow channel 3 corresponding to the first temperature zone. Through the design of the embodiment of the utility model, the liquid cooling assembly can better dissipate heat efficiently in the first temperature zone with a higher temperature to meet the heat dissipation requirements of the first temperature zone. At the same time, the spoiler assembly 4 may not be provided or a relatively small number of spoiler assemblies 4 may be provided in the flow channel 3 corresponding to other areas such as the second temperature zone to reduce the temperature difference between the first temperature zone and the second temperature zone, so as to better balance the temperature of various parts of the battery. Therefore, the liquid cooling assembly has good heat dissipation effect and temperature difference balance effect. Furthermore, by setting the width of the flow channel 3 to at least twice the width of the spoiler assembly 4, the obstruction of the spoiler assembly 4 to the flow of the coolant is reduced, and the heat exchange efficiency is further improved.

[0036] In some embodiments, such as Figure 3 As shown, at least part of the surface of the spoiler component 4 for contacting the coolant is set as a smooth curved surface. Optionally, the surface of the spoiler component 4 can be set as a spherical, ellipsoidal or other curved surface, or can also refer to Figure 3 The shape shown in the figure sets the surface of the spoiler component 4 to be a streamlined curved surface with one end being arc-shaped, the other end being a pointed end, and the middle part being smoothly transitioned. By adopting the above design, when the spoiler component 4 contacts the coolant, the coolant flows more smoothly along the smooth curved surface, which can further reduce the obstruction of the spoiler component 4 on the coolant, and can also reduce the impact loss of the coolant on the spoiler component 4, thereby increasing the durability of the spoiler component 4.

[0037] In some embodiments, such as Figure 3 As shown, the spoiler assembly 4 includes at least one first spoiler 41 and at least one second spoiler 42 arranged at intervals. The first spoiler 41 and the second spoiler 42 may also be provided in plurality, and they only need to be arranged at intervals with each other. Among them, the first spoiler 41 is bent toward one side of the flow channel 3, and the second spoiler 42 is bent toward the other side opposite to the flow channel 3. In other words, the first spoiler 41 and the second spoiler 42 are bent toward the two side edges of the flow channel 3, respectively. By adopting the above design, the curved shape of the first spoiler 41 or the second spoiler 42 has a guiding effect. When the coolant flows through the first spoiler 41 or the second spoiler 42, it can flow toward the two side edges of the flow channel 3 under the guiding effect of the first spoiler 41 or the second spoiler 42. When the coolant flows to the edge of the flow channel 3, it will also be subject to the rebound force and flow into the inside of the flow channel 3, thereby forming a relatively turbulent flow state, and can better absorb the heat on both sides of the flow channel 3, further improving the heat exchange efficiency.

[0038] In some embodiments, such as Figure 3As shown, in the same spoiler assembly 4, the first spoiler 41 and the second spoiler 42 are alternately arranged in sequence along the flow direction of the coolant, and the number of the first spoiler 41 and the second spoiler 42 is equal. Through the above design, when the coolant flows through the first spoiler 41, the flow channel becomes relatively narrow, so that the flow rate of the coolant increases, and then, when it flows through the gap between the first spoiler 41 and the second spoiler 42, the flow channel becomes relatively wide, so that the flow rate of the coolant decreases, and so on, the flow rate of the coolant in the flow channel 3 increases and decreases repeatedly, and the flow rate changes periodically, so that an oscillating pulse flow state can be formed, that is, a pulsating flow state, further increasing the chaos of the flow and improving the heat exchange efficiency. At the same time, the coolant flows through the first spoiler 41 and the second spoiler 42 periodically in sequence, and under the guidance of the alternately arranged first spoiler 41 and the second spoiler 42, the coolant is evenly diverted to both sides of the flow channel 3, so that the heat of each part of the flow channel 3 is more comprehensively absorbed, and the heat dissipation effect is better.

[0039] In some embodiments, Figure 3 As shown, the spoiler assembly 4 is provided with a plurality of spoiler assemblies, the spacing D1 between two adjacent spoiler assemblies 4 is greater than the length L1 of the first spoiler 41 and the length L2 of the second spoiler 42, and the length L1 of the first spoiler 41 and the length L2 of the second spoiler 42 are both greater than the spacing D2 between the first spoiler 41 and the second spoiler 42 in the same spoiler assembly 4, that is, D1>L1>D2, D1>L2>D2. Further, in some embodiments, the length L0 of the flow channel 3 provided with the spoiler assembly 4 is an integer multiple of the spacing D1 between two adjacent spoiler assemblies 4, and the spacing D1 between two adjacent spoiler assemblies 4 is an even multiple of the spacing D2 between the first spoiler 41 and the second spoiler 42 in the same spoiler assembly 4. Optionally, the length L1 of the first spoiler 41 can also be set to be equal to the length L2 of the second spoiler 42, that is, L1=L2. The above embodiment provides a preferred design scheme for the spoiler component 4. According to the results of fluid mechanics simulation analysis, the scheme of the above embodiment can make the flow rate of the coolant show relatively uniform periodic changes, can achieve better heat dissipation effect, and the heat dissipation effect of each part in the flow channel 3 provided with the spoiler component 4 is less different, which can meet the temperature difference of the entire internal temperature of the 4C battery ≤5°C.

[0040] In some embodiments, Figure 3 and Figure 4 As shown, the first spoiler 41 and / or the second spoiler 42 have a head end 43 and a tail end 44 opposite to each other, and the coolant flows through the head end 43 and the tail end 44 in sequence, wherein the curvature radius of the head end 43 is greater than the curvature radius of the tail end 44. Specifically, for ease of description, taking the first spoiler 41 as an example, the flow direction of the coolant is as follows: Figure 4As shown by the arrow in , when the coolant flows through the first spoiler 41, it first contacts the head end 43 with a larger radius of curvature, and is split at the head end 43, then flows along the surface of the first spoiler 41, and finally converges at the tail end 44 with a smaller radius of curvature. The tail end 44 has a sharp portion, and the direction of the sharp portion is opposite to the bending direction of the spoiler body where it is located, and the sharp portion connects the two opposite side surfaces of the spoiler 4. The first spoiler 41 is bent toward one side of the flow channel 3, and the sharp portion of its tail end 44 protrudes toward the other side opposite to the flow channel 3, and at the sharp portion, the two side surfaces of the first spoiler 41 are connected. When configured in this way, the first spoiler 41 is generally convex on one side and concave on the other side, so that the flowing coolant forms two streams with different flow rates and directions on the two side surfaces of the first spoiler 41, and converges at the position where the tail end 44 has a sharp portion. Due to the different flow rates and directions of the two streams, collision will occur during the convergence process, which can further disturb the water flow, thereby improving the heat exchange effect of the coolant. The effect of the second spoiler 42 is similar to that of the first spoiler 41.

[0041] By adopting the above design, the head end 43 of the spoiler has a good diversion effect, and the tail end 44 is relatively sharp and has a good guiding effect. Combined with the tail ends 44 of the first spoiler 41 and the second spoiler 42 being bent toward the two sides of the flow channel 3 respectively, the coolant can be better disturbed and guided, so that the coolant can more fully exchange heat with various parts of the flow channel 3, thereby improving the heat dissipation effect.

[0042] In some embodiments, Figure 2 As shown, the flow channel 3 corresponding to at least the first temperature zone includes a plurality of flat flow channels 31 and a plurality of guide flow channels 32, each flat flow channel 31 is arranged at intervals, and each guide flow channel 32 is connected to at least two adjacent flat flow channels 31 to guide the coolant into the flat flow channel 31. Among them, the spoiler component 4 is arranged in the flat flow channel 31. Specifically, the guide flow channel 32 is connected to the plurality of flat flow channels 31, and the coolant flowing out of the plurality of flat flow channels 31 can be merged and diverted to the plurality of flat flow channels 31 again, so that the coolant repeatedly flows through the flat flow channel 31 and the guide flow channel 32, and after multiple confluences and diversions, flows through a sufficiently long path during the entire flow process, so that the heat can be fully absorbed, further improving the heat dissipation effect.

[0043] In some embodiments, the spoiler assembly 4 is arranged on the flow channel plate 1 and / or the cover plate 2. Specifically, the spoiler assembly 4 can be arranged on the flow channel plate 1, can be arranged on the cover plate 2, or can be arranged on the flow channel plate 1 and the cover plate 2 at the same time. It is only necessary to ensure that when the cover plate 2 is covered on the flow channel plate 1, the spoiler assembly 4 is located in the flow channel 3, and the design is more flexible. When the spoiler assembly 4 is arranged on the flow channel plate 1 and the cover plate 2 at the same time, compared with the solution of only being arranged on the flow channel plate 1 or the cover plate 2, the contact heat exchange area between the coolant and the spoiler assembly 4 can be further increased, and the heat exchange efficiency of the coolant can be improved. When the spoiler assembly 4 is only arranged on the flow channel plate 1 or the cover plate 2, the manufacturing process can be simplified and the manufacturing cost can be reduced. Therefore, the above scheme can be selected according to actual needs.

[0044] The embodiment of the utility model further provides a power supply system, including a battery and the above-mentioned liquid cooling assembly, wherein the battery is in contact with the liquid cooling assembly. The power supply system provided by the embodiment of the utility model can have a good heat dissipation effect due to the use of the above-mentioned liquid cooling assembly, and when in use, the temperature of various parts of the battery is well balanced and the temperature difference is small, so the power supply system has a long service life and high safety and reliability.

[0045] The embodiment of the utility model also provides a vehicle, including a vehicle body and the above-mentioned power supply system, and the power supply system is installed on the vehicle body. The vehicle provided by the embodiment of the utility model can be a new energy vehicle using the above-mentioned power supply system as a power source, or can be various vehicles using the above-mentioned power supply system as a power source for a central control system and a lighting system. Since the power supply system has a long service life and high safety and reliability, the vehicle using the power supply system has higher durability and safety performance.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid cooling assembly, used for heat dissipation of batteries, characterized in that: include: Runner plate; A cover plate, disposed on the flow channel plate; A flow channel is at least arranged on the flow channel plate, and the flow channel is used for cooling liquid to flow so as to exchange heat for the battery; wherein the battery has a first temperature zone and a second temperature zone with different temperatures, and at least a portion of the flow channel corresponding to the first temperature zone is provided with a spoiler component at intervals, and the spoiler component is used to contact with the coolant to change the flow state of the coolant; along a direction perpendicular to the flow direction of the coolant, the width of the flow channel is at least twice the width of the spoiler component.

2. The liquid cooling assembly according to claim 1, characterized in that: At least a portion of the surface of the spoiler component that is used to contact the coolant is configured as a smooth curved surface.

3. The liquid cooling assembly according to claim 1, characterized in that: The spoiler assembly includes at least one first spoiler and at least one second spoiler arranged at intervals; The first spoiler is bent toward one side of the flow channel, and the second spoiler is bent toward the other side opposite to the flow channel.

4. The liquid cooling assembly according to claim 3, characterized in that: In the same spoiler assembly, the first spoilers and the second spoilers are arranged alternately in sequence along the flow direction of the coolant, and the number of the first spoilers and the number of the second spoilers are equal.

5. The liquid cooling assembly according to claim 4, characterized in that: There are multiple spoiler assemblies, and the distance between two adjacent spoiler assemblies is greater than the length of the first spoiler and the length of the second spoiler, and the length of the first spoiler and the length of the second spoiler are both greater than the distance between the first spoiler and the second spoiler in the same spoiler assembly.

6. The liquid cooling assembly according to claim 5, characterized in that: The length of the flow channel provided with the spoiler assembly is an integral multiple of the distance between two adjacent spoiler assemblies, and the distance between two adjacent spoiler assemblies is an even multiple of the distance between the first spoiler and the second spoiler in the same spoiler assembly.

7. The liquid cooling assembly according to claim 3, characterized in that: The first spoiler and / or the second spoiler has a head end and a tail end opposite to each other, and the coolant flows through the head end and the tail end successively; Wherein, the curvature radius of the head end is greater than the curvature radius of the tail end.

8. The liquid cooling assembly according to claim 1, characterized in that: The flow channel corresponding to at least the first temperature zone includes a plurality of flat and straight flow channels and a plurality of guide flow channels, the flat and straight flow channels are arranged at intervals, and each guide flow channel is connected to at least two adjacent flat and straight flow channels to guide the coolant into the flat and straight flow channels; Wherein, the spoiler component is arranged in the flat flow channel.

9. The liquid cooling assembly according to any one of claims 1 to 8, characterized in that: The spoiler assembly is arranged on the flow channel plate and / or the cover plate.

10. A power supply system, characterized in that: The invention comprises a battery and a liquid cooling assembly according to any one of claims 1 to 9, wherein the battery is in contact with and connected to the liquid cooling assembly.

11. A vehicle comprising a vehicle body and the power supply system according to claim 10, wherein the power supply system is mounted on the vehicle body.

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