Liquid cooling plate, liquid cooling mechanism and battery pack

Abstract

The utility model relates to battery technology field provides a kind of liquid cooling plate, liquid cooling mechanism and battery pack.The inside of the liquid cooling plate is formed with liquid cooling passage, and the outer surface of its one side is formed with the first liquid inlet and outlet and second liquid inlet and outlet communicated with liquid cooling passage.The liquid cooling passage is rotationally symmetrically arranged.The first liquid inlet and outlet and second liquid inlet and outlet are rotationally symmetrically distributed.Thus, the first liquid inlet and outlet and second liquid inlet and outlet can be used alternately, and the cooling effect does not change, to improve the compatibility of the liquid cooling plate.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a liquid cooling plate, a liquid cooling mechanism, and a battery pack. Background Technology

[0002] In related technologies, users of new energy vehicles have increasingly higher requirements for driving range, leading to larger energy levels in the power batteries of these vehicles and a greater number of individual battery cells. With the increase in the number of individual cells, controlling the temperature uniformity of the power battery becomes more difficult, necessitating the use of liquid cooling plates with superior heat dissipation performance to cool the individual cells. However, in current liquid cooling plates, the inlet and outlet of the liquid cooling channel cannot be interchanged. The cooling medium within the liquid cooling channel can only cool each individual cell along the direction from the inlet to the outlet, making the liquid cooling plate incompatible with multiple vehicle models. Utility Model Content

[0003] The present invention provides a liquid cooling plate, a liquid cooling mechanism, and a battery pack. The first and second liquid inlets and outlets of the liquid cooling plate are interchanged, which can change the flow direction of the cooling medium in the liquid cooling channel, so that the liquid cooling plate can be compatible with multiple vehicle models, thereby at least partially solving the above-mentioned technical problems.

[0004] In a first aspect, an embodiment of the present invention provides a liquid cooling plate, wherein a liquid cooling channel is formed inside the liquid cooling plate, and a first liquid inlet / outlet and a second liquid inlet / outlet communicating with the liquid cooling channel are formed on one side of the outer surface of the liquid cooling plate, wherein the liquid cooling channel is arranged in a rotationally symmetrical manner, and the first liquid inlet / outlet and the second liquid inlet / outlet are distributed in a rotationally symmetrical manner.

[0005] This allows the first and second liquid inlets / outlets to be interchanged without altering the cooling effect, thus improving the compatibility of the liquid cooling plate.

[0006] In one embodiment, the liquid cooling channels are arranged in a centrally symmetrical manner, and the first liquid inlet / outlet and the second liquid inlet / outlet are centrally symmetrically distributed.

[0007] This allows the first and second liquid inlets / outlets to be interchanged without altering the cooling effect, thus improving the compatibility of the liquid cooling plate.

[0008] In one embodiment, the center of symmetry of the liquid cooling channel coincides with the center of symmetry of the first liquid inlet / outlet and the second liquid inlet / outlet.

[0009] This allows the first and second liquid inlets / outlets to be interchanged without altering the cooling effect, thus improving the compatibility of the liquid cooling plate.

[0010] In one embodiment, the liquid cooling channel includes a first flow channel and a second flow channel, the first and last ends of the first flow channel are connected to the first and last ends of the second flow channel, the first inlet and outlet are located at a first connection position between the first flow channel and the second flow channel, and the second inlet and outlet are located at a second connection position between the first flow channel and the second flow channel.

[0011] Therefore, liquid enters through one of the first inlet / outlet and the second inlet / outlet, and exits through the other. Furthermore, the cooling effect of the cooling medium on the battery module will not change with the selection of the inlet and outlet positions after the inlet / outlet directions are reversed.

[0012] In one embodiment, the first flow channel is a serpentine flow channel, and / or the second flow channel is a serpentine flow channel.

[0013] Therefore, by extending the flow path of the first and second flow channels, the contact area between the battery module and the first and second flow channels is increased, enabling the liquid cooling channel to exchange heat with more areas of the battery module, thereby improving the cooling effect.

[0014] In one embodiment, the first flow channel includes at least two first sub-flow channels spaced apart along a first direction, and a second sub-flow channel connecting each two adjacent first sub-flow channels.

[0015] This ensures that the first flow channel can cover multiple areas at the bottom of the battery module, thereby increasing the contact area between the battery module and the first flow channel, enabling the first flow channel to exchange heat with more areas of the battery module and improving the cooling effect.

[0016] In one embodiment, the spacing between any two adjacent first sub-channels is L1, satisfying: 15 mm ≤ L1 ≤ 30 mm.

[0017] This ensures that the first and second plates of the liquid cooling plate have sufficient welding area to guarantee welding strength, while preventing air from accumulating in the area between each pair of adjacent first sub-channels, thus ensuring the airtightness of the liquid cooling plate.

[0018] In one embodiment, the width of the first sub-channel is D1, satisfying: 15 mm ≤ D1 ≤ 23 mm; and / or, the width of the second sub-channel is D2, satisfying: 15 mm ≤ D2 ≤ 23 mm.

[0019] This ensures that the first and second sub-flow channels can be stamped and formed, and prevents bulging.

[0020] In one embodiment, the second flow channel includes at least two third sub-flow channels spaced apart along a first direction, and a fourth sub-flow channel connecting each two adjacent third sub-flow channels.

[0021] This ensures that the second flow channel can cover multiple areas at the bottom of the battery module, thereby increasing the contact area between the battery module and the second flow channel, enabling the second flow channel to exchange heat with more areas of the battery module and improve the cooling effect.

[0022] In one embodiment, the spacing between any two adjacent third sub-channels is L2, satisfying: 15 mm ≤ L2 ≤ 30 mm.

[0023] This ensures that the first and second plates of the liquid cooling plate have sufficient welding area to guarantee welding strength, while preventing air from accumulating in the area between each two adjacent third sub-channels, thus ensuring the airtightness of the liquid cooling plate.

[0024] In one embodiment, the width of the third sub-channel is D3, satisfying: 15 mm ≤ D3 ≤ 23 mm; and / or, the width of the fourth sub-channel is D4, satisfying: 15 mm ≤ D4 ≤ 23 mm.

[0025] This ensures that the third and fourth sub-flow channels can be stamped and prevents bulging.

[0026] In one embodiment, the height of the liquid cooling channel is H, which satisfies: 3 mm ≤ H ≤ 4 mm.

[0027] This ensures that the liquid cooling channel can be manufactured and prevents excessive flow resistance.

[0028] In one embodiment, at least two liquid cooling channels are provided and spaced apart along a first direction, and one of the liquid cooling channels is configured to be thermally connected to a battery module.

[0029] Therefore, each battery module can be cooled in separate zones to achieve better temperature uniformity.

[0030] In one embodiment, at least two of the liquid cooling channels are configured to be connected in parallel to the water supply line.

[0031] This reduces the flow resistance of the cooling medium, thereby reducing the pump head and reducing costs.

[0032] In one embodiment, the liquid cooling plate includes a first plate and a second plate connected to each other, at least one of the first plate and the second plate having a protrusion extending away from the other, and defining the liquid cooling channel by the protrusion.

[0033] This allows the liquid cooling channel to be built into the liquid cooling plate.

[0034] In one embodiment, the thickness of the first plate is D5, satisfying: 1 mm ≤ D5 ≤ 1.5 mm; and / or, the thickness of the second plate is D6, satisfying: 1 mm ≤ D6 ≤ 1.5 mm.

[0035] This ensures the strength of the first and second plates and prevents the liquid cooling plates from becoming too heavy and costly.

[0036] Secondly, embodiments of this utility model provide a liquid cooling mechanism, comprising:

[0037] As mentioned above, liquid cooling plates;

[0038] The first inlet / outlet pipe is connected to the first inlet / outlet port;

[0039] The second inlet / outlet pipe is connected to the second inlet / outlet port.

[0040] This allows the first and second liquid inlets / outlets to be interchanged without altering the cooling effect, thus improving the compatibility of the liquid cooling plate.

[0041] In one embodiment, the liquid cooling plate is provided with at least two liquid cooling channels, and the at least two liquid cooling channels are spaced apart along a first direction, wherein the at least two liquid cooling channels are connected in parallel to the first inlet and outlet pipes, and the at least two liquid cooling channels are connected in parallel to the second inlet and outlet pipes.

[0042] This allows for zoned cooling of each battery module, achieving better temperature uniformity and reducing the flow resistance of the cooling medium, thereby reducing the pump head and reducing costs.

[0043] Thirdly, embodiments of the present invention provide a battery pack, including the liquid cooling plate as described above, or including the liquid cooling mechanism as described above.

[0044] This allows the first and second liquid inlets / outlets to be interchanged without altering the cooling effect, thus improving the compatibility of the liquid cooling plate.

[0045] The beneficial effects of the embodiments of this utility model are as follows:

[0046] In embodiments of this invention, by forming a liquid cooling channel, a first inlet / outlet, and a second inlet / outlet on the liquid cooling plate, and because the liquid cooling channel is rotationally symmetrically arranged, and the first and second inlet / outlets are rotationally symmetrically distributed, liquid can enter through one of the first and second inlet / outlets while exiting through the other. Since the cooling medium flow path is rotationally symmetrically arranged, the cooling effect of the cooling medium on the battery module does not change with the selection of the inlet or outlet position. Therefore, the first and second inlet / outlets can be interchanged, allowing for selection of one as the inlet and the other as the outlet according to the design requirements of different vehicle models, without altering the cooling effect, thus improving the compatibility of the liquid cooling plate. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a schematic diagram of the cooling mechanism provided in an embodiment of the present invention;

[0049] Figure 2 This is a top view of the cooling mechanism provided in an embodiment of this utility model;

[0050] Figure 3 This is a schematic diagram of the structure of the second plate of the liquid cooling plate provided in an embodiment of this utility model;

[0051] Figure 4 This is a top view of the second plate of the liquid cooling plate provided in an embodiment of the present invention;

[0052] Figure 5 This is a partial cross-sectional view of the liquid cooling plate provided in an embodiment of this utility model.

[0053] Explanation of reference numerals in the attached figures:

[0054] 1. Liquid cooling plate; 11. Liquid cooling channel; 111. First flow channel; 1111. First sub-flow channel; 1112. Second sub-flow channel; 112. Second flow channel; 1121. Third sub-flow channel; 1122. Fourth sub-flow channel; 12. First inlet / outlet; 13. Second inlet / outlet; 14. First plate; 15. Second plate; 16. Protrusion;

[0055] 2. Water supply pipeline; 21. First inlet / outlet pipe; 22. Second inlet / outlet pipe;

[0056] 3. Battery module. Detailed Implementation

[0057] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0058] This application provides a battery pack. The battery pack includes a battery box and a battery module 3 disposed within the battery box. The battery module 3 includes multiple individual battery cells. The battery box provides a space for accommodating the individual battery cells, and the battery box can adopt various structures. In some embodiments, the battery box includes a casing and a top cover that overlap each other. The casing and the top cover together define an accommodating space for accommodating the individual battery cells. The casing can be a hollow structure, and the top cover can be a plate-like structure, with the top cover covering the opening side of the casing so that the top cover and the casing together define the accommodating space. Both the casing and the top cover can be hollow structures with an opening on one side, with the opening of the top cover covering the opening side of the casing. Of course, the battery box formed by the top cover and the casing can be of various shapes, such as a cylinder, a cuboid, etc.

[0059] In a battery pack, there can be multiple individual cells. These cells can be connected in series, parallel, or a combination thereof. A combination thereof means that multiple cells are connected in both series and parallel configurations. Multiple cells can be directly connected in series, parallel, or a combination thereof, and then the entire assembly of these cells is housed within a battery box. Alternatively, the battery pack can consist of multiple individual cells first connected in series, parallel, or a combination thereof to form battery modules, and then these modules are connected in series, parallel, or a combination thereof to form a single unit housed within a battery box. The battery pack may also include other structures; for example, it may include a busbar for electrical connection between the multiple individual cells.

[0060] Each individual cell can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. Individual cells can be cylindrical, flat, cuboid, or other shapes.

[0061] like Figures 1 to 5As shown in the figure, this application embodiment also provides a liquid cooling mechanism. The liquid cooling mechanism includes a liquid cooling plate 1, a first inlet / outlet pipe 21, and a second inlet / outlet pipe 22. A liquid cooling channel 11 is formed inside the liquid cooling plate 1, and a first inlet / outlet port 12 and a second inlet / outlet port 13 communicating with the liquid cooling channel 11 are formed on one side of its outer surface. The liquid cooling channel 11 is arranged with rotational symmetry. The first inlet / outlet port 12 and the second inlet / outlet port 13 are distributed with rotational symmetry. The first inlet / outlet pipe 21 communicates with the first inlet / outlet port 12. The second inlet / outlet pipe 22 communicates with the second inlet / outlet port 13.

[0062] In this embodiment, by forming a liquid cooling channel 11, a first inlet / outlet 12, and a second inlet / outlet 13 on the liquid cooling plate 1, and since the liquid cooling channel 11 is rotationally symmetrically arranged, and the first inlet / outlet 12 and the second inlet / outlet 13 are rotationally symmetrically distributed, liquid can be introduced into one of the first inlet / outlet 12 and the second inlet / outlet 13, while liquid exits from the other. Because the cooling medium flow path is rotationally symmetrically arranged, the cooling effect of the cooling medium on the battery module 3 will not change with the selection of the inlet and outlet positions. Therefore, the first inlet / outlet 12 and the second inlet / outlet 13 can be interchanged, allowing for selection of one as the inlet and the other as the outlet according to the design requirements of different vehicle models, without altering the cooling effect, thus improving the compatibility of the liquid cooling plate 1.

[0063] It is understandable that the cooling medium can flow in from the first inlet / outlet 12 and out from the second inlet / outlet 13, and vice versa. Based on the rotational symmetry design of the liquid cooling channel 11, and the rotational symmetry distribution of the first inlet / outlet 12 and the second inlet / outlet 13, the flow path of the cooling medium within the liquid cooling channel 11 is essentially the same, resulting in a similar cooling effect on the battery module 3. Therefore, swapping the use of the first inlet / outlet 12 and the second inlet / outlet 13 will not affect the cooling effect of the liquid cooling plate 1 on the battery module 3, ensuring that the temperature consistency of each individual cell in the battery module 3 remains unaffected after swapping the use of the first inlet / outlet 12 and the second inlet / outlet 13.

[0064] like Figure 3 and Figure 4 As shown, in some embodiments, the liquid cooling channels 11 are arranged in a centrally symmetrical manner. The first liquid inlet / outlet 12 and the second liquid inlet / outlet 13 are centrally symmetrically distributed.

[0065] It is understandable that by arranging the liquid cooling channel 11 in a centrally symmetrical manner, and with the first inlet / outlet 12 and the second inlet / outlet 13 also centrally symmetrically distributed, the cooling effect of the cooling medium on the battery module 3 will not change regardless of the choice of the inlet or outlet position. This allows the first inlet / outlet 12 and the second inlet / outlet 13 to be interchanged, enabling the selection of one as the inlet and the other as the outlet based on the design requirements of different vehicle models, without altering the cooling effect, thus improving the compatibility of the liquid cooling plate 1.

[0066] The central symmetry is a special rotational symmetry, which allows the first liquid inlet / outlet 12 and the second liquid inlet / outlet 13 to be located on opposite sides of the liquid cooling plate 1, so as to facilitate the arrangement of the first liquid inlet / outlet pipe 21 and the second liquid inlet / outlet pipe 22.

[0067] In some embodiments, the center of symmetry of the liquid cooling channel 11 coincides with the center of symmetry of the first liquid inlet / outlet 12 and the second liquid inlet / outlet 13.

[0068] It is understandable that if the centers of symmetry coincide, it further ensures that the flow path from the first inlet / outlet 12 to the second inlet / outlet 13 is the same as the flow path from the second inlet / outlet 13 to the first inlet / outlet 12.

[0069] like Figure 1 and Figure 2 As shown, in some embodiments, the liquid cooling plate 1 is used to place the battery module 3. The center point of the bottom of the battery module 3, the center of symmetry of the liquid cooling channel 11, and the center of symmetry of the first liquid inlet / outlet 12 and the second liquid inlet / outlet 13 coincide.

[0070] like Figure 3 and Figure 4 As shown, in some embodiments, the liquid cooling plate 1 is provided with at least two liquid cooling channels 11, and the at least two liquid cooling channels 11 are spaced apart along a first direction. The at least two liquid cooling channels 11 are connected in parallel to the first inlet / outlet pipe 21, and the at least two liquid cooling channels 11 are connected in parallel to the second inlet / outlet pipe 22.

[0071] It is understandable that by arranging multiple liquid cooling channels 11 at intervals on the liquid cooling plate 1, and making one liquid cooling channel 11 thermally connected to a corresponding battery module 3, the battery modules 3 can be cooled in zones to achieve a better temperature uniformity. At least two liquid cooling channels 11 are arranged at intervals to reduce the possibility of heat transfer between adjacent liquid cooling channels 11 causing mutual temperature interference of the cooling medium.

[0072] In related technologies, a single liquid cooling channel 11 is used to cool multiple battery modules 3. The water temperature of battery modules 3 near the front end of the cooling medium flow path is lower, while the water temperature of battery modules 3 near the rear end of the cooling medium flow path is higher. This results in a large temperature difference between the front and rear ends of the cooling medium flow path, leading to different cooling effects and poor temperature uniformity among the battery modules 3. In this embodiment, a partitioned cooling design is used, allowing each battery module 3 to correspond to a separate liquid cooling channel 11. This prevents temperature differences in the cooling medium between different battery modules 3, ensuring that the temperature of the cooling medium at corresponding positions in each battery module 3 is essentially uniform. Since the liquid cooling channel 11 can ensure good temperature uniformity among the individual cells in the corresponding battery module 3, the temperature of each battery module 3 can also be kept essentially uniform, thus achieving a uniform temperature effect.

[0073] It should be noted that each liquid cooling channel 11 in the liquid cooling plate 1 has a first liquid inlet / outlet 12 and a second liquid inlet / outlet 13.

[0074] In some embodiments, the spacing between every two adjacent liquid cooling channels 11 on the liquid cooling plate 1 can be reasonably selected based on the arrangement position of the battery module 3. In this embodiment, the spacing between every two adjacent liquid cooling channels 11 is not limited.

[0075] By connecting at least two liquid cooling channels 11 in parallel to the first inlet / outlet pipe 21 and the second inlet / outlet pipe 22, the flow resistance of the cooling medium can be reduced, thereby reducing the energy consumption of the cooling medium and thus reducing the pump head, resulting in cost reduction. At the same time, the at least two liquid cooling channels 11 connected in parallel to the first inlet / outlet pipe 21 and the second inlet / outlet pipe 22 can also ensure that the cooling medium between each liquid cooling channel 11 does not affect each other, achieving independent zoned cooling.

[0076] like Figures 1 to 5 As shown in the figure, this application embodiment also provides a liquid cooling plate 1. The liquid cooling plate 1 has a liquid cooling channel 11 formed inside, and a first inlet / outlet 12 and a second inlet / outlet 13 communicating with the liquid cooling channel 11 are formed on one side of its outer surface. The liquid cooling channel 11 is arranged in a rotationally symmetrical manner. The first inlet / outlet 12 and the second inlet / outlet 13 are distributed in a rotationally symmetrical manner.

[0077] In this embodiment, by forming a liquid cooling channel 11, a first inlet / outlet 12, and a second inlet / outlet 13 on the liquid cooling plate 1, and since the liquid cooling channel 11 is rotationally symmetrically arranged, and the first inlet / outlet 12 and the second inlet / outlet 13 are rotationally symmetrically distributed, liquid can be introduced into one of the first inlet / outlet 12 and the second inlet / outlet 13, while liquid exits from the other. Because the cooling medium flow path is rotationally symmetrically arranged, the cooling effect of the cooling medium on the battery module 3 will not change with the selection of the inlet and outlet positions. Therefore, the first inlet / outlet 12 and the second inlet / outlet 13 can be interchanged, allowing for selection of one as the inlet and the other as the outlet according to the design requirements of different vehicle models, without altering the cooling effect, thus improving the compatibility of the liquid cooling plate 1.

[0078] It is understandable that the cooling medium can flow in from the first inlet / outlet 12 and out from the second inlet / outlet 13, and vice versa. Based on the rotational symmetry design of the liquid cooling channel 11, and the rotational symmetry distribution of the first inlet / outlet 12 and the second inlet / outlet 13, the flow path of the cooling medium within the liquid cooling channel 11 is essentially the same, resulting in a similar cooling effect on the battery module 3. Therefore, swapping the use of the first inlet / outlet 12 and the second inlet / outlet 13 will not affect the cooling effect of the liquid cooling plate 1 on the battery module 3, ensuring that the temperature consistency of each individual cell in the battery module 3 remains unaffected after swapping the use of the first inlet / outlet 12 and the second inlet / outlet 13.

[0079] In related technologies, the liquid cooling channel 11 of the liquid cooling plate 1 is complex and unique. The cooling medium can only flow along the direction of inlet-liquid cooling channel 11-outlet to ensure the consistency of temperature of each individual cell in the battery module 3 during the cooling process. If the inlet and outlet are directly interchanged, the heat dissipation performance will be affected and the heat dissipation requirements cannot be met. In the embodiment of this application, based on the design concept of rotational symmetry, the first inlet / outlet 12 and the second inlet / outlet 13 can be interchanged, and the consistency of temperature of each individual cell in the battery module 3 is not affected after the interchange.

[0080] like Figure 3 and Figure 4 As shown, in some embodiments, the liquid cooling channels 11 are arranged in a centrally symmetrical manner. The first liquid inlet / outlet 12 and the second liquid inlet / outlet 13 are centrally symmetrically distributed.

[0081] It is understandable that by arranging the liquid cooling channel 11 in a centrally symmetrical manner, and with the first inlet / outlet 12 and the second inlet / outlet 13 also centrally symmetrically distributed, the cooling effect of the cooling medium on the battery module 3 will not change regardless of the choice of the inlet or outlet position. This allows the first inlet / outlet 12 and the second inlet / outlet 13 to be interchanged, enabling the selection of one as the inlet and the other as the outlet based on the design requirements of different vehicle models, without altering the cooling effect, thus improving the compatibility of the liquid cooling plate 1.

[0082] The central symmetry is a special rotational symmetry, which allows the first liquid inlet / outlet 12 and the second liquid inlet / outlet 13 to be located on opposite sides of the liquid cooling plate 1, so as to facilitate the arrangement of the first liquid inlet / outlet pipe 21 and the second liquid inlet / outlet pipe 22.

[0083] In some embodiments, the center of symmetry of the liquid cooling channel 11 coincides with the center of symmetry of the first liquid inlet / outlet 12 and the second liquid inlet / outlet 13.

[0084] It is understandable that if the centers of symmetry coincide, it further ensures that the flow path from the first inlet / outlet 12 to the second inlet / outlet 13 is the same as the flow path from the second inlet / outlet 13 to the first inlet / outlet 12.

[0085] like Figure 1 and Figure 2 As shown, in some embodiments, the liquid cooling plate 1 is used to place the battery module 3. The center point of the bottom of the battery module 3, the center of symmetry of the liquid cooling channel 11, and the center of symmetry of the first liquid inlet / outlet 12 and the second liquid inlet / outlet 13 coincide.

[0086] like Figure 3 and Figure 4 As shown, in some embodiments, the liquid cooling channel 11 includes a first flow channel 111 and a second flow channel 112. The first and last ends of the first flow channel 111 are connected to the first and last ends of the second flow channel 112. A first inlet / outlet 12 is located at a first connection position between the first flow channel 111 and the second flow channel 112. A second inlet / outlet 13 is located at a second connection position between the first flow channel 111 and the second flow channel 112.

[0087] It is understandable that, since the liquid cooling channel 11 is centrally symmetrically arranged, the first flow channel 111 and the second flow channel 112 are also centrally symmetrically distributed. The first end (head end) of the first flow channel 111 is connected to the first end (head end) of the second flow channel 112, and the first inlet / outlet 12 is located at the connection position of their first ends (head ends). The second end (tail end) of the first flow channel 111 is connected to the second end (tail end) of the second flow channel 112, and the second inlet / outlet 13 is located at the connection position of their second ends (tail ends). Thus, liquid enters through one of the first inlet / outlet 12 and the second inlet / outlet 13, and exits through the other, and the cooling effect of the cooling medium on the battery module 3 will not change with the selection of the inlet and outlet positions after the inlet / outlet directions are reversed.

[0088] In some embodiments, the first flow channel 111 and the second flow channel 112 have the same flow channel height and the first flow channel 111 and the second flow channel 112 have the same flow channel width.

[0089] like Figure 3 and Figure 4 As shown, in some embodiments, the first flow channel 111 is a serpentine flow channel, and / or the second flow channel 112 is a serpentine flow channel.

[0090] Understandably, designing the first flow channel 111 and the second flow channel 112 as serpentine flow channels extends the flow path of the first flow channel 111 and the second flow channel 112, increasing the contact area between the battery module 3 and the first flow channel 111 and the second flow channel 112. This allows the liquid cooling channel 11 to exchange heat with more areas of the battery module 3, thereby improving the cooling effect. Simultaneously, the serpentine flow channel design also ensures the consistency of temperature among individual battery cells during cooling of the battery module 3, reducing the temperature difference between individual cells and preventing overheating of individual cells that could lead to safety hazards.

[0091] Both the first flow channel 111 and the second flow channel 112 are designed as serpentine flow channels, and they are centrally symmetrically distributed. Since the center point of the bottom of the battery module 3, the center of symmetry of the liquid cooling channel 11, and the centers of symmetry of the first inlet / outlet 12 and the second inlet / outlet 13 coincide, the flow path of the cooling medium is the same whether it flows into the liquid cooling channel 11 from the first inlet / outlet 12 or the second inlet / outlet 13, resulting in a consistent cooling effect on the battery module 3. Therefore, the first inlet / outlet 12 and the second inlet / outlet 13 can be arbitrarily replaced to match different vehicle models, thereby reducing mold development costs and development time.

[0092] like Figure 4As shown, in some embodiments, the first flow channel 111 includes at least two first sub-flow channels 1111 spaced apart along a first direction, and a second sub-flow channel 1112 connected between each two adjacent first sub-flow channels 1111.

[0093] It is understood that the first flow channel 111 includes multiple first sub-flow channels 1111 spaced apart along a first direction to ensure that the first flow channel 111 can cover multiple areas of the bottom of the battery module 3, thereby increasing the contact area between the battery module 3 and the first flow channel 111, enabling the first flow channel 111 to exchange heat with more areas of the battery module 3, thus improving the cooling effect. Two adjacent first sub-flow channels 1111 are connected through a second sub-flow channel 1112 to achieve mutual conduction between the various first sub-flow channels 1111.

[0094] It should be noted that when two adjacent first sub-channels 1111 are connected through a second sub-channel 1112, a serpentine first sub-channel 111 can be formed. Therefore, for the first sub-channel 1111 located in the middle, one end is connected to a first sub-channel 1111 on one side through a second sub-channel 1112, and the other end is connected to a first sub-channel 1111 on the other side through another second sub-channel 1112. Specifically, there can be three first sub-channels 1111: a first sub-channel 1111 at position one, a first sub-channel 1111 at position two, and a first sub-channel 1111 at position three. The first end of the first sub-channel 1111 at position one is connected to the first inlet / outlet port 12, and the second end of the first sub-channel 1111 at position one is connected to the second end of the first sub-channel 1111 at position two through a second sub-channel 1112. The first end of the second sub-channel 1111 is connected to the first end of the third sub-channel 1111 via another second sub-channel 1112, and the second end of the third sub-channel 1111 is connected to the second inlet / outlet port 13. Thus, at least two first sub-channels 1111 and second sub-channels 1112 cooperate to form a serpentine first channel 111.

[0095] In some embodiments, the first direction is the length direction of the liquid cooling plate 1. At least two first sub-channels 1111 are spaced apart along the length direction of the liquid cooling plate 1, and each first sub-channel 1111 extends along the width direction of the liquid cooling plate 1. The spacing between any two adjacent first sub-channels 1111 is the same. Alternatively, the spacing between any two adjacent first sub-channels 1111 is different.

[0096] In some embodiments, the first sub-channel 1111 and the second sub-channel 1112 have the same channel height and the first sub-channel 1111 and the second sub-channel 1112 have the same channel width.

[0097] like Figure 4As shown, in some embodiments, the spacing between every two adjacent first sub-channels 1111 is L1, satisfying: 15 mm ≤ L1 ≤ 30 mm.

[0098] Understandably, the liquid cooling plate 1 is welded together from a first plate 14 and a second plate 15, and the cavity of the protrusion 16 on the first plate 14 and / or the second plate 15 forms a first sub-channel 1111. Since the first plate 14 and the second plate 15 are welded at locations other than the first sub-channel 1111, if the distance between any two adjacent first sub-channels 1111 is less than 15 mm, the welding area of ​​the first plate 14 and the second plate 15 will be too small, resulting in insufficient welding strength. If the distance between any two adjacent first sub-channels 1111 is greater than 30 mm, it will affect the sealing between the first plate 14 and the second plate 15, causing air to accumulate between any two adjacent first sub-channels 1111, thus preventing the liquid cooling plate 1 from being sealed.

[0099] In some embodiments, the spacing between any two adjacent first sub-channels 1111 is set to 15 mm, 20 mm, 25 mm, 30 mm, or any value between the two.

[0100] The distance between any two adjacent first sub-channels 1111 is the length of the second sub-channel 1112.

[0101] like Figure 4 As shown, in some embodiments, the width of the first sub-channel 1111 is D1, satisfying: 15 mm ≤ D1 ≤ 23 mm; and / or, the width of the second sub-channel 1112 is D2, satisfying: 15 mm ≤ D2 ≤ 23 mm.

[0102] Understandably, the liquid cooling plate 1 is welded together from a first plate 14 and a second plate 15. A protrusion 16 is stamped onto the first plate 14 and / or the second plate 15 to form a first sub-channel 1111 and a second sub-channel 1112 using the cavity of the protrusion 16. It is evident that the first sub-channel 1111 and the second sub-channel 1112 need to be formed through a stamping process. If the width of the first sub-channel 1111 and the second sub-channel 1112 is less than 15 mm, it will be impossible to form them by stamping. If the width of the first sub-channel 1111 and the second sub-channel 1112 is greater than 23 mm, bulging may occur on the first plate 14 and / or the second plate 15 during the stamping process, affecting product yield.

[0103] In some embodiments, the width of the first sub-channel 1111 is set to 15 mm, 18 mm, 20 mm, 23 mm, or any value between the two. The width of the second sub-channel 1112 is set to 15 mm, 18 mm, 20 mm, 23 mm, or any value between the two.

[0104] like Figure 3 and Figure 4 As shown, in some embodiments, the second flow channel 112 includes at least two third sub-flow channels 1121 spaced apart along a first direction, and a fourth sub-flow channel 1122 connected between each two adjacent third sub-flow channels 1121.

[0105] It is understood that the second flow channel 112 includes multiple third sub-flow channels 1121 spaced apart along the first direction to ensure that the second flow channel 112 can cover multiple areas of the bottom of the battery module 3, thereby increasing the contact area between the battery module 3 and the second flow channel 112, enabling the second flow channel 112 to exchange heat with more areas of the battery module 3, thus improving the cooling effect. Adjacent third sub-flow channels 1121 are connected by a fourth sub-flow channel 1122 to achieve mutual conduction between the various third sub-flow channels 1121.

[0106] It should be noted that after each pair of adjacent third sub-channels 1121 are connected through a fourth sub-channel 1122, a serpentine second channel 112 can be formed. Therefore, for the third sub-channel 1121 located in the middle, one end is connected to a third sub-channel 1121 on one side through a fourth sub-channel 1122, and the other end is connected to a third sub-channel 1121 on the other side through another fourth sub-channel 1122. Specifically, there can be three third sub-channels 1121: a first-position third sub-channel 1121, a second-position third sub-channel 1121, and a third-position third sub-channel 1121. The first end of the first-position third sub-channel 1121 is connected to the first inlet / outlet port 12, and the second end of the first-position third sub-channel 1121 is connected to the second end of the second-position third sub-channel 1121 through a fourth sub-channel 1122. The first end of the second position third sub-channel 1121 is connected to the first end of the third position third sub-channel 1121 via another fourth sub-channel 1122, and the second end of the third position third sub-channel 1121 is connected to the second inlet / outlet port 13. Thus, at least two third sub-channels 1121 and fourth sub-channels 1122 cooperate to form a serpentine second channel 112.

[0107] In some embodiments, the first direction is the length direction of the liquid cooling plate 1. At least two third sub-channels 1121 are spaced apart along the length direction of the liquid cooling plate 1, and each third sub-channel 1121 extends along the width direction of the liquid cooling plate 1. The spacing between any two adjacent third sub-channels 1121 is the same. Alternatively, the spacing between any two adjacent third sub-channels 1121 is different.

[0108] In some embodiments, the third sub-channel 1121 and the fourth sub-channel 1122 have the same channel height and the same channel width.

[0109] like Figure 4 As shown, in some embodiments, the spacing between every two adjacent third sub-channels 1121 is L2, satisfying: 15 mm ≤ L2 ≤ 30 mm.

[0110] Understandably, the liquid cooling plate 1 is welded together from a first plate 14 and a second plate 15, and the cavity of the protrusion 16 on the first plate 14 and / or the second plate 15 forms a third sub-channel 1121. Since the first plate 14 and the second plate 15 are welded at locations other than the third sub-channel 1121, if the distance between any two adjacent third sub-channels 1121 is less than 15 mm, the welding area of ​​the first plate 14 and the second plate 15 will be too small, resulting in insufficient welding strength. If the distance between any two adjacent third sub-channels 1121 is greater than 30 mm, it will affect the sealing between the first plate 14 and the second plate 15, causing air to accumulate between any two adjacent third sub-channels 1121, thus preventing the liquid cooling plate 1 from being sealed.

[0111] In some embodiments, the spacing between any two adjacent third sub-channels 1121 is set to 15 mm, 20 mm, 25 mm, 30 mm, or any value between the two.

[0112] The distance between any two adjacent third sub-channels 1121 is the length of the fourth sub-channel 1122.

[0113] like Figure 4 As shown, in some embodiments, the width of the third sub-channel 1121 is D3, satisfying: 15 mm ≤ D3 ≤ 23 mm; and / or, the width of the fourth sub-channel 1122 is D4, satisfying: 15 mm ≤ D4 ≤ 23 mm.

[0114] Understandably, the liquid cooling plate 1 is welded together from a first plate 14 and a second plate 15. A protrusion 16 is stamped onto the first plate 14 and / or the second plate 15 to form a third sub-channel 1121 and a fourth sub-channel 1122 using the cavity of the protrusion 16. It is evident that the third sub-channel 1121 and the fourth sub-channel 1122 need to be formed through a stamping process. If the width of the third sub-channel 1121 and the fourth sub-channel 1122 is less than 15 mm, it will be impossible to form them by stamping. If the width of the third sub-channel 1121 and the fourth sub-channel 1122 is greater than 23 mm, it may cause bulging of the first plate 14 and / or the second plate 15 during the stamping process, affecting product yield.

[0115] In some embodiments, the width of the third sub-channel 1121 is set to 15 mm, 18 mm, 20 mm, 23 mm, or any value between any two. The width of the fourth sub-channel 1122 is set to 15 mm, 18 mm, 20 mm, 23 mm, or any value between any two.

[0116] like Figure 5 As shown, in some embodiments, the channel height of the liquid cooling channel 11 is H, which satisfies: 3 mm ≤ H ≤ 4 mm.

[0117] It is understandable that the height of the liquid cooling channel 11 is set in the range of 3 mm to 4 mm, on the one hand to ensure that the liquid cooling channel 11 can be manufactured and formed, and on the other hand to prevent the flow resistance of the liquid cooling channel 11 from being too large.

[0118] The liquid cooling plate 1 is formed by welding a first plate 14 and a second plate 15. A protrusion 16 is formed on the first plate 14 and / or the second plate 15 through a stamping process. After the first plate 14 and the second plate 15 are welded, the internal cavity of the protrusion 16 forms a liquid cooling channel 11. If the channel height of the liquid cooling channel 11 is greater than 4 mm, the first plate 14 and / or the second plate 15 may be broken during the stamping process, resulting in a decrease in stamping yield and significant waste of raw materials. If the channel height of the liquid cooling channel 11 is less than 3 mm, the flow resistance of the cooling medium within the liquid cooling channel 11 will increase, leading to increased energy consumption of the cooling medium during flow, resulting in an increase in the pump head and increased costs.

[0119] In some embodiments, the height of the liquid cooling channel 11 is set to 3 mm, 3.5 mm, 4 mm, or any value between the two.

[0120] In some embodiments, at least two liquid cooling channels 11 are provided and spaced apart along a first direction, and one liquid cooling channel 11 is configured to be thermally connected to a battery module 3.

[0121] It is understandable that by arranging multiple liquid cooling channels 11 at intervals on the liquid cooling plate 1, and making one liquid cooling channel 11 thermally connected to a corresponding battery module 3, the battery modules 3 can be cooled in zones to achieve a better temperature uniformity. At least two liquid cooling channels 11 are arranged at intervals to reduce the possibility of heat transfer between adjacent liquid cooling channels 11 causing mutual temperature interference of the cooling medium.

[0122] In related technologies, a single liquid cooling channel 11 is used to cool multiple battery modules 3. The water temperature of battery modules 3 near the front end of the cooling medium flow path is lower, while the water temperature of battery modules 3 near the rear end of the cooling medium flow path is higher. This results in a large temperature difference between the front and rear ends of the cooling medium flow path, leading to different cooling effects and poor temperature uniformity among the battery modules 3. In this embodiment, a partitioned cooling design is used, allowing each battery module 3 to correspond to a separate liquid cooling channel 11. This prevents temperature differences in the cooling medium between different battery modules 3, ensuring that the temperature of the cooling medium at corresponding positions in each battery module 3 is essentially uniform. Since the liquid cooling channel 11 can ensure good temperature uniformity among the individual cells in the corresponding battery module 3, the temperature of each battery module 3 can also be kept essentially uniform, thus achieving a uniform temperature effect.

[0123] It should be noted that each liquid cooling channel 11 in the liquid cooling plate 1 has a first liquid inlet / outlet 12 and a second liquid inlet / outlet 13.

[0124] In some embodiments, the spacing between every two adjacent liquid cooling channels 11 on the liquid cooling plate 1 can be reasonably selected based on the arrangement position of the battery module 3. In this embodiment, the spacing between every two adjacent liquid cooling channels 11 is not limited.

[0125] In some embodiments, at least two liquid cooling channels 11 are configured to be connected in parallel to the water supply line 2.

[0126] Understandably, connecting at least two liquid cooling channels 11 in parallel with the water supply line 2 can reduce the flow resistance of the cooling medium, thereby reducing the energy consumption of the cooling medium and thus reducing the pump head, resulting in cost reduction. At the same time, connecting at least two liquid cooling channels 11 in parallel with the water supply line 2 can also ensure that the cooling medium between each liquid cooling channel 11 does not affect each other, achieving independent zoned cooling.

[0127] For example, the liquid cooling channels 11 are spaced in fours, and the four liquid cooling channels 11 are connected in parallel to the water supply pipeline 2.

[0128] In some embodiments, the water supply line 2 includes a first inlet / outlet pipe 21 and a second inlet / outlet pipe 22. Each first inlet / outlet port 12 of at least two liquid cooling channels 11 is connected to the first inlet / outlet pipe 21 via a pipe connector. Each second inlet / outlet port 13 of at least two liquid cooling channels 11 is connected to the second inlet / outlet pipe 22 via a pipe connector. Thus, at least two liquid cooling channels 11 are connected in parallel to the water supply line 2.

[0129] Furthermore, one of the first inlet / outlet pipe 21 and the second inlet / outlet pipe 22 serves as the inlet pipe, and the other as the outlet pipe. Specifically, when the first inlet / outlet pipe 21 serves as the inlet pipe and the second inlet / outlet pipe 22 serves as the outlet pipe, the flow path of the cooling medium is: first inlet / outlet pipe 21 - first inlet / outlet port 12 - liquid cooling channel 11 - second inlet / outlet port 13 - second inlet / outlet pipe 22. When the second inlet / outlet pipe 22 serves as the inlet pipe and the first inlet / outlet pipe 21 serves as the outlet pipe, the flow path of the cooling medium is: second inlet / outlet pipe 22 - second inlet / outlet port 13 - liquid cooling channel 11 - first inlet / outlet port 12 - first inlet / outlet pipe 21.

[0130] Since each liquid cooling channel 11 is independently supplied with water and the shapes of the liquid cooling channels 11 are completely identical, the temperature field will not be affected even if the inlet and outlet directions of the entire liquid cooling plate 1 are reversed, thus meeting the requirement of inlet and outlet interchange. As a result, the liquid cooling plate 1 can be matched with multiple car models, allowing multiple car models to share a single mold and saving development costs.

[0131] like Figure 5 As shown, in some embodiments, the liquid cooling plate 1 includes a first plate 14 and a second plate 15 connected to each other. At least one of the first plate 14 and the second plate 15 is configured with a protrusion 16 protruding away from the other and defining a liquid cooling channel 11 through the protrusion 16.

[0132] It is understood that the first plate 14 and the second plate 15 are attached to each other, and at least one of the first plate 14 and the second plate 15 forms a protrusion 16 protruding away from the other, thereby defining the liquid cooling channel 11 by the protrusion 16, so that the liquid cooling channel 11 is built into the liquid cooling plate 1.

[0133] In some embodiments, the protrusion 16 defining the liquid cooling channel 11 means that the liquid cooling channel 11 is formed through the gap between the protrusion 16 and the first plate 14, or the gap between the protrusion 16 and the second plate 14, or the gap between two opposing protrusions 14.

[0134] In some embodiments, the protrusion 16 can be formed by stamping on the first plate 14 and / or the second plate 15 using a stamping process.

[0135] In some embodiments, the first plate 14 is provided with a protrusion 16 extending away from the second plate 15. The first plate 14 can be spot-welded to the second plate 15 at locations other than the protrusion 16. After the first plate 14 and the second plate 15 are welded and fixed, the gap between the protrusion 16 and the second plate 15 can define a liquid cooling channel 11.

[0136] In some embodiments, the second plate 15 is provided with a protrusion 16 extending away from the first plate 14. The second plate 15 can be spot-welded to the first plate 14 at locations other than the protrusion 16. After the first plate 14 and the second plate 15 are welded and fixed, the gap between the protrusion 16 and the first plate 14 can define a liquid cooling channel 11.

[0137] In some embodiments, the first plate 14 is provided with a protrusion 16 extending away from the second plate 15, and the second plate 15 is also provided with a protrusion 16 extending away from the first plate 14. The first plate 14 can be spot-welded to the second plate 15 at locations other than the protrusion 16. After the first plate 14 and the second plate 15 are welded and fixed, the gap between the protrusions 16 of the first plate 14 and the protrusions 16 of the second plate 15 defines a liquid cooling channel 11.

[0138] like Figure 5 As shown, in some embodiments, the thickness of the first plate 14 is D5, satisfying: 1 mm ≤ D5 ≤ 1.5 mm; and / or, the thickness of the second plate 15 is D6, satisfying: 1 mm ≤ D6 ≤ 1.5 mm.

[0139] Understandably, the thickness of the first plate 14 is set within the range of 1 mm to 1.5 mm to ensure sufficient strength and to prevent excessive thickness from increasing the weight and cost of the liquid cooling plate 1. Similarly, the thickness of the second plate 15 is set within the range of 1 mm to 1.5 mm to ensure sufficient strength and to prevent excessive thickness from increasing the weight and cost of the liquid cooling plate 1.

[0140] In some embodiments, the thickness of the first plate 14 is set to 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, or any value between any two.

[0141] In some embodiments, the thickness of the second plate 15 is set to 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, or any value between any two.

[0142] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A liquid-cooled plate (1), characterized in that, The liquid cooling plate (1) has a liquid cooling channel (11) inside, and a first liquid inlet / outlet (12) and a second liquid inlet / outlet (13) communicating with the liquid cooling channel (11) are formed on its outer surface on one side. The liquid cooling channel (11) is arranged in a rotationally symmetrical manner, and the first liquid inlet / outlet (12) and the second liquid inlet / outlet (13) are distributed in a rotationally symmetrical manner.

2. The liquid cooling plate (1) according to claim 1, characterized in that, The liquid cooling channel (11) is arranged in a centrally symmetrical manner, and the first liquid inlet / outlet (12) and the second liquid inlet / outlet (13) are distributed in a centrally symmetrical manner.

3. The liquid cooling plate (1) according to claim 2, characterized in that, The center of symmetry of the liquid cooling channel (11) coincides with the center of symmetry of the first liquid inlet / outlet (12) and the second liquid inlet / outlet (13).

4. The liquid cooling plate (1) according to claim 1, characterized in that, The liquid cooling channel (11) includes a first flow channel (111) and a second flow channel (112). The first and last ends of the first flow channel (111) are connected to the first and last ends of the second flow channel (112). The first inlet / outlet (12) is located at the first connection position between the first flow channel (111) and the second flow channel (112), and the second inlet / outlet (13) is located at the second connection position between the first flow channel (111) and the second flow channel (112).

5. The liquid cooling plate (1) according to claim 4, characterized in that, The first flow channel (111) is a serpentine flow channel, and / or the second flow channel (112) is a serpentine flow channel.

6. The liquid cooling plate (1) according to claim 4, characterized in that, The first flow channel (111) includes at least two first sub-flow channels (1111) spaced apart along a first direction, and a second sub-flow channel (1112) connected between each two adjacent first sub-flow channels (1111).

7. The liquid cooling plate (1) according to claim 6, characterized in that, The spacing between any two adjacent first sub-channels (1111) is L1, satisfying: 15 mm ≤ L1 ≤ 30 mm.

8. The liquid cooling plate (1) according to claim 6, characterized in that, The width of the first sub-channel (1111) is D1, satisfying: 15 mm ≤ D1 ≤ 23 mm; and / or, the width of the second sub-channel (1112) is D2, satisfying: 15 mm ≤ D2 ≤ 23 mm.

9. The liquid cooling plate (1) according to claim 4, characterized in that, The second flow channel (112) includes at least two third sub-flow channels (1121) spaced apart along a first direction, and a fourth sub-flow channel (1122) connected between each two adjacent third sub-flow channels (1121).

10. The liquid cooling plate (1) according to claim 9, characterized in that, The spacing between each two adjacent third sub-channels (1121) is L2, satisfying: 15 mm ≤ L2 ≤ 30 mm.

11. The liquid cooling plate (1) according to claim 9, characterized in that, The width of the third sub-channel (1121) is D3, satisfying: 15 mm ≤ D3 ≤ 23 mm; and / or, the width of the fourth sub-channel (1122) is D4, satisfying: 15 mm ≤ D4 ≤ 23 mm.

12. The liquid-cooled plate (1) according to any one of claims 1 to 11, characterized in that, The height of the liquid cooling channel (11) is H, which satisfies: 3 mm ≤ H ≤ 4 mm.

13. The liquid-cooled plate (1) according to any one of claims 1 to 11, characterized in that, The liquid cooling channels (11) are configured to be at least two and spaced apart along the first direction, and one of the liquid cooling channels (11) is configured to be thermally connected to a battery module (3).

14. The liquid cooling plate (1) according to claim 13, characterized in that, At least two of the liquid cooling channels (11) are configured to be connected in parallel to the water supply line (2).

15. The liquid-cooled plate (1) according to any one of claims 1 to 11, characterized in that, The liquid cooling plate (1) includes a first plate (14) and a second plate (15) connected to each other. At least one of the first plate (14) and the second plate (15) is provided with a protrusion (16) protruding away from the other and defining the liquid cooling channel (11) by the protrusion (16).

16. The liquid cooling plate (1) according to claim 15, characterized in that, The thickness of the first plate (14) is D5, satisfying: 1 mm ≤ D5 ≤ 1.5 mm; and / or the thickness of the second plate (15) is D6, satisfying: 1 mm ≤ D6 ≤ 1.5 mm.

17. A liquid cooling mechanism, characterized in that, include: Liquid cooling plate (1) as described in any one of claims 1 to 16; The first inlet / outlet pipe (21) is connected to the first inlet / outlet port (12); The second inlet / outlet pipe (22) is connected to the second inlet / outlet port (13).

18. The liquid cooling mechanism according to claim 17, characterized in that, The liquid cooling plate (1) is provided with at least two liquid cooling channels (11), and the at least two liquid cooling channels (11) are spaced apart along the first direction. The at least two liquid cooling channels (11) are connected in parallel to the first inlet and outlet pipe (21), and the at least two liquid cooling channels (11) are connected in parallel to the second inlet and outlet pipe (22).

19. A battery pack, characterized in that, It includes the liquid cooling plate (1) as described in any one of claims 1 to 16, or the liquid cooling mechanism as described in claim 17 or 18.

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