Liquid cooling plate and battery

Abstract

The utility model provides a liquid cooling plate and a battery, the liquid cooling plate is used for exchanging heat with a battery cell in the battery, the liquid cooling plate comprises: a runner plate provided with a first groove; the sealing plate is connected with the runner plate and is provided with a first surface and a second surface, the first surface faces the runner plate, the first surface covers the first groove to form a runner for circulation of a heat exchange medium, and the second surface deviates from the runner plate and faces the battery cell; wherein the second surface is provided with a second groove, the second groove and the first groove are staggered in position, and the second groove is constructed to be a pressure relief space or a pressure relief channel and is used for corresponding to the position of an anti-explosion valve of the battery cell. According to the technical scheme, under the condition that effective work of the liquid cooling plate and the anti-explosion valve is not affected, the discharged object of the anti-explosion valve can be cooled, high safety is achieved, the liquid cooling plate and the anti-explosion valve can be arranged on the same surface of the battery cell, space is saved, the internal structure of the battery is compact, and the miniaturization development requirement of the battery is met.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to a liquid cooling plate and a battery. Background Art

[0002] Under the background of the energy transformation era, the application of batteries is becoming more and more extensive. For example, in the fields of new energy vehicles, electric vehicles, etc., as well as in the field of energy storage, etc. The generation and transmission of current in the battery will generate a certain amount of heat. Excessive heat and thermal runaway may lead to safety problems.

[0003] In the related art, a liquid cooling device is arranged to exchange heat with the battery cell to relieve the problem of excessive heat, and an explosion-proof valve is arranged on the outer shell of the cell to relieve pressure, so as to reduce the internal pressure and heat to relieve the thermal runaway problem. To ensure the realization of functions, the explosion-proof valve and the liquid cooling device need to be arranged at different positions of the cell to avoid hindering the pressure relief of the explosion-proof valve and the heat exchange of the liquid cooling device. However, such an arrangement occupies more space on the surface of the cell, which is not conducive to the development requirements of the compact and miniaturized battery structure. Summary of the Utility Model

[0004] The embodiments of the utility model provide a liquid cooling plate and a battery, which improve the technical problem that it is difficult to balance the safety and structural compactness of the battery.

[0005] In a first aspect, the embodiments of the utility model provide a liquid cooling plate for exchanging heat with a battery cell. The liquid cooling plate includes:

[0006] A flow channel plate provided with a first groove;

[0007] A sealing plate connected to the flow channel plate and having a first surface and a second surface. The first surface faces the flow channel plate, and the first surface covers the first groove to form a flow channel for the heat exchange medium to flow through. The second surface faces away from the flow channel plate and towards the battery cell;

[0008] Wherein, the second surface is provided with a second groove, the position of the second groove is staggered from that of the first groove, and the second groove is configured as a pressure relief space or a pressure relief channel and is used to correspond to the position of the explosion-proof valve of the battery cell.

[0009] In an embodiment, the number of the second grooves is multiple, each second groove extends along a first direction, and the multiple second grooves are arranged at intervals along a second direction, and the first direction is perpendicular to the second direction.

[0010] In an embodiment, the sealing plate includes a connecting portion and a heat exchange portion. The connecting portion surrounds the heat exchange portion, the connecting portion is hermetically connected to the flow channel plate, the second groove is arranged on the heat exchange portion, and both ends of the second groove extend to the connecting portion.

[0011] In one embodiment, a plurality of the first protrusions are provided on a surface of the flow channel plate facing the sealing plate, and positioning grooves are provided on the first protrusions;

[0012] A plurality of second protrusions are formed on the first surface, and the second protrusions are embedded in the positioning grooves.

[0013] In one embodiment, the positions of the plurality of second protrusions correspond to the positions of the plurality of second grooves.

[0014] In one embodiment, the liquid cooling plate further includes:

[0015] An insulating layer is provided on the second surface and covers at least the inner wall of the second groove.

[0016] In one embodiment, the first groove includes a connecting groove body, a flow dividing groove body, a flow collecting groove body, and a plurality of heat exchange groove bodies. The connecting groove body, the flow dividing groove body, and the flow collecting groove body extend along the second direction, and the plurality of heat exchange groove bodies extend along the first direction and are spaced apart along the second direction; one ends of the plurality of heat exchange groove bodies are connected in parallel through the connecting groove body, one ends of a part of the plurality of heat exchange groove bodies are connected to the flow dividing groove body, and the other ends of the other part of the plurality of heat exchange groove bodies are connected to the flow collecting groove body;

[0017] The sealing plate is provided with a water inlet interface communicating with the flow dividing groove body and a water outlet interface communicating with the flow collecting groove body.

[0018] In one embodiment, an edge of the flow channel plate locally extends along the first direction to form a first extension portion, an edge of the sealing plate locally extends along the first direction to form a second extension portion, and the first extension portion corresponds to and is connected to the second extension portion;

[0019] The first extension portion is provided with a water inlet groove body and a water outlet groove body. The water inlet interface and the water outlet interface are arranged on the second extension portion. The water inlet interface is communicated with the flow dividing groove body through the water inlet groove body, and the water outlet interface is communicated with the flow collecting groove body through the water outlet groove body.

[0020] In one embodiment, the flow channel plate is further provided with turbulence protrusions, and a plurality of the turbulence protrusions are arranged in the heat exchange groove bodies.

[0021] In a second aspect, an embodiment of the present invention provides a battery, including:

[0022] A battery cell having an explosion-proof valve;

[0023] The liquid cooling plate as described in any one of the first aspect, a second surface of the sealing plate of the liquid cooling plate is attached to a surface of the battery cell, and the second groove on the second surface corresponds to the position of the explosion-proof valve.

[0024] Beneficial effects of the embodiments of the utility model:

[0025] In an embodiment of the utility model, an improved liquid cooling plate is provided, and a sealing plate of the liquid cooling plate has a first surface facing the flow channel plate and a second surface away from the flow channel plate, the first surface is used to close the flow channel plate, and the second surface is used to directly or indirectly contact and exchange heat with the battery cell, and a second groove staggered from the flow channel is formed on the second surface, and the position of the second groove directly corresponds to the explosion-proof valve, so that the second surface fits the battery cell at the flow channel for better heat exchange, and the second groove can be used for pressure relief, thereby saving space without affecting pressure relief and heat exchange, and taking into account the compactness of the battery structure while ensuring the safety of the battery, which is conducive to the development needs of safer and smaller batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 is a cross-sectional view of the matching state of the liquid cooling plate and the battery cell provided in the embodiment of the present application;

[0028] Figure 2 is a schematic front view of a liquid cooling plate provided in an embodiment of the present application;

[0029] Figure 3 is an exploded schematic diagram of a liquid cooling plate provided in an embodiment of the present application;

[0030] Figure 4 is a schematic diagram of a sealing plate of a liquid cooling plate provided in an embodiment of the present application;

[0031] Figure 5 It is a schematic diagram of a flow channel plate of a liquid cooling plate provided in an embodiment of the present application.

[0032] Icons: 1000 - liquid cooling plate, 2000 - battery cell, 2001 - explosion-proof valve, 1 - flow channel plate, 11 - edge part, 12 - central part, 121 - first groove, 1211 - connecting groove body, 1212 - shunt groove body, 1213 - confluence groove body, 1214 - heat exchange groove body, 122 - first protrusion, 123 - positioning groove, 124 - turbulence protrusion, 13 - first extension part, 131 - water inlet groove body, 132 - water outlet groove body, 2 - sealing plate, 2a - first surface, 2b - second surface, 21 - connecting part, 22 - heat exchange part, 221 - second groove, 222 - second protrusion, 23 - second extension part, 231 - water inlet interface, 232 - water outlet interface, 3 - insulating layer, 4 - water nozzle, X - first direction, Y - second direction. Detailed implementation manners

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present invention. In addition, it should be understood that the specific implementation manners described here are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise stated, the orientation terms such as "upper" and "lower" usually refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the accompanying drawings; and "inner" and "outer" refer to the outline of the device.

[0034] In the related art, a battery generally includes a battery cell and a heat exchange device. During use, the battery, especially the battery cell, needs to maintain an appropriate temperature. When the temperature is too low, the electrochemical reaction activity in the battery cell decreases, the ion migration rate decreases, the charge and discharge performance of the battery cell decreases, and lithium plating may occur, leading to safety accidents; when the temperature of the battery cell is too high, it will also affect the service life and performance, and is prone to cause deflagration safety accidents. The heat exchange device is used to contact and exchange heat with the battery cell to keep the temperature of the battery cell within an appropriate range. Common heat exchange devices include liquid cooling plates. A flow channel for a heat exchange medium to flow is provided inside the liquid cooling plate. The surface of the liquid cooling plate is attached to the surface of the battery cell, and heat exchange occurs between the liquid cooling plate and the battery cell. The heat of the battery cell is taken away or heat is provided to the battery cell through the heat exchange medium in the flow channel.

[0035] In addition, to relieve the combustion and explosion safety accidents caused by thermal runaway and too high internal pressure, an explosion-proof valve is generally provided on the outer shell of the battery cell. The explosion-proof valve is used to discharge the internal pressure, high-temperature gas or gas-liquid mixture of the battery cell when the internal pressure or internal temperature of the battery cell is too high, thereby relieving the combustion and explosion caused by thermal runaway.

[0036] To ensure the heat exchange function of the liquid cooling plate and the relief function of the explosion-proof valve, the explosion-proof valve and the liquid cooling device need to be arranged at different positions on the surface of the battery cell to avoid hindering pressure relief and heat exchange. However, such an arrangement occupies a relatively large space on the surface of the battery cell, which is not conducive to the development requirements of the compactness and miniaturization of the battery structure.

[0037] In view of this, the present application provides a liquid cooling plate and a battery. Without affecting heat exchange and pressure relief, the structure is improved to make the internal structure of the battery more compact, ensuring the safety and structural compactness of the battery and taking into account the development requirements of a safer and more miniaturized battery.

[0038] As Figure 1 shown, the battery provided by the embodiment of the present application includes a battery cell 2000 and a liquid cooling plate 1000.

[0039] An explosion-proof valve 2001 is provided on the outer shell of the battery cell 2000.

[0040] The liquid cooling plate 1000 is used to contact and exchange heat with the battery cell 2000 so that the battery cell 2000 can maintain an appropriate working temperature.

[0041] The liquid cooling plate 1000 includes a flow channel plate 1 and a sealing plate 2.

[0042] The flow channel plate 1 is provided with a first groove 121.

[0043] The sealing plate 2 is connected to the flow channel plate 1. The sealing plate 2 has a first surface and a second surface. The first surface faces the flow channel plate 1, and the second surface faces away from the flow channel plate 1. The first surface covers the first groove 121 to form a flow channel for the heat exchange medium to flow through, and the second surface is used to contact and exchange heat with the surface of the battery cell 2000. It should be noted that the second surface can directly contact the battery cell 2000 to achieve heat exchange, or the second surface and the battery cell 2000 can also be indirectly in contact for heat exchange. For example, other functional layers can be provided between the second surface and the battery cell 2000, and the second surface contacts the battery cell 2000 through the other functional layers for heat exchange.

[0044] The second surface is provided with a second groove 221, and the position of the second groove 221 is offset from that of the first groove 121, that is, the projection of the first groove 121 on the second surface does not intersect with the second groove 221.

[0045] The area of the second surface corresponding to the first groove 121 fits the surface of the battery cell 2000 to achieve a better heat exchange effect.

[0046] The second groove 221 on the second surface is configured as a pressure relief space or a pressure relief channel. The second groove 221 corresponds to the explosion-proof valve 2001 of the battery cell 2000, that is, the projection of the explosion-proof valve 2001 of the battery cell 2000 on the second surface falls within the range of the second groove 221, so that the explosion-proof valve 2001 communicates with the second groove 221. When the explosion-proof valve 2001 discharges the internal high-temperature gas or high-temperature gas-liquid mixture, the second groove 221 serves as a pressure relief space for accommodating the discharged substance or as a channel for discharging the discharged substance to the outside, ensuring the pressure relief function.

[0047] Exemplarily, when the surface of the battery cell 2000 covers the second surface and completely shields the second groove 221, the second groove 221 serves as a pressure relief space for accommodating the discharged substance; when the surface of the battery cell 2000 covers the second surface but does not completely shield the second groove 221, the second groove 221 communicates with the outside, and can serve as a pressure relief space for accommodating the discharged substance or as a pressure relief channel for releasing the discharged substance to the outside.

[0048] In addition, when the discharged substance enters the second groove 221 or flows through the second groove 221, it can also exchange heat with the heat exchange medium in the first groove 121 through the inner wall of the second groove 221 to achieve temperature reduction, avoiding the heat of the discharged substance from causing adverse effects on other components in the battery or other battery cells 2000.

[0049] Therefore, the technical solution provided by the embodiments of the present application not only enables the liquid cooling plate 1000 to effectively exchange heat to ensure an appropriate working temperature, but also enables the explosion-proof valve 2001 to effectively relieve pressure, and the discharged substance can also be cooled to a certain extent, having high safety. Moreover, the liquid cooling plate 1000 and the explosion-proof valve 2001 can be arranged on the same surface of the battery cell 2000, achieving space saving, making the internal structure of the battery compact, and being beneficial to the development demand of miniaturization of the battery.

[0050] As Figure 2 and Figure 3 shown, the number of the second grooves 221 is multiple, each second groove 221 extends along the first direction X, and the multiple second grooves 221 are arranged at intervals along the second direction Y, and the first direction X is perpendicular to the second direction Y. By providing a plurality of second grooves 221, the position of the explosion-proof valve 2001 of the battery cell 2000 is allowed to be set at different positions, as long as it can correspond to at least one of the plurality of second grooves 221. By providing a plurality of second grooves 221, it is beneficial to adapt the liquid cooling plate 1000 to battery cells 2000 of different specifications and models, making the liquid cooling plate 1000 provided by the present application have high applicability.

[0051] It should be noted that the "first direction X" and "second direction Y" mentioned in this application refer to directions parallel to the first surface and / or the second surface. In the description of this application, terms such as "parallel" and "perpendicular" do not mean absolute parallelism or perpendicularity is required, but there can be a slight inclination, as long as it is generally parallel or perpendicular to ensure the functionality of the structure.

[0052] As Figure 4 shown, the sealing plate 2 includes a connecting portion 21 and a heat exchange portion 22. The second groove 221 is provided in the heat exchange portion 22, and the connecting portion 21 surrounds the heat exchange portion 22. The connecting portion 21 is used for sealing connection with the flow channel plate 1. For example, it is sealed by brazing.

[0053] Both ends of the second groove 221 extend to the connecting portion 21, so as to maximize the second groove 221 as much as possible while ensuring the sealing connection between the sealing plate 2 and the flow channel plate 1 and ensuring that the area of the second surface corresponding to the first groove 121 fits the battery cell 2000 for heat exchange, expanding the pressure relief space, improving the accommodation capacity and pressure relief capacity of the second groove 221, and the cooling effect on the discharged substances.

[0054] As Figure 5 shown, the flow channel plate 1 includes an edge portion 11 and a central portion 12. The edge portion 11 surrounds the central portion 12, and the first groove 121 is provided in the central portion 12. The edge portion 11 is used for sealing connection with the sealing plate 2. For example, the edge portion 11 is sealed with the connecting portion 21 by brazing.

[0055] Please refer to Figure 3 and Figure 5 shown, a plurality of first protrusions 122 are provided on the surface of the flow channel plate 1 facing the sealing plate 2, and positioning grooves 123 are provided on the first protrusions 122; Please refer to Figure 3 and Figure 4 shown, a plurality of second protrusions 222 are formed on the first surface of the sealing plate 2, and the second protrusions 222 are embedded in the positioning grooves 123.

[0056] The first protrusions 122 and the second protrusions 222 are in contact with each other, playing a good supporting and isolating role to ensure the functionality of the flow channel. And the second protrusions 222 are embedded and matched with the positioning grooves 123 in the first protrusions 122, which is beneficial to the stable installation and accurate positioning of the flow channel plate 1 and the sealing plate 2, improving the structural stability of the liquid cooling plate 1000 and ensuring its sealing performance and functionality.

[0057] In the sealing plate 2, the positions of the plurality of second protrusions 222 correspond to the plurality of second grooves 221, that is, the projection of the second protrusions 222 on the second surface completely overlaps with the second grooves 221. By setting like this, the thickness reduction of the sealing plate 2 at the second grooves 221 is avoided, and the second protrusions 222 play the role of reinforcing ribs, improving the structural strength and stiffness of the sealing plate 2.

[0058] Optionally, the sealing plate 2 is integrally formed by stamping, that is, by stamping, a second protrusion 222 is formed on the first surface, and a second groove 221 is formed on the second surface. The processing technology is simple, and the structural stiffness of the sealing plate 2 can also be improved, making the sealing plate 2 not easily deformed.

[0059] Optionally, the flow channel plate 1 can also be integrally formed by stamping, that is, by stamping, a first groove 121, a first protrusion 122, and a positioning groove 123 are formed on the surface of the flow channel plate 1 facing the sealing plate 2.

[0060] Please refer to Figure 5 As shown, the first groove 121 includes a connecting groove body 1211, a flow dividing groove body 1212, a flow converging groove body 1213, and a plurality of heat exchange groove bodies 1214. The connecting groove body 1211, the flow dividing groove body 1212, and the flow converging groove body 1213 extend along the second direction Y. The plurality of heat exchange groove bodies 1214 extend along the first direction X and are arranged at intervals along the second direction Y. One ends of the plurality of heat exchange groove bodies 1214 are connected in parallel through the connecting groove body 1211. One ends of a part of the plurality of heat exchange groove bodies 1214 are connected to the flow dividing groove body 1212, and the other ends of another part of the plurality of heat exchange groove bodies 1214 are connected to the flow converging groove body 1213.

[0061] When the liquid cooling plate 1000 works, the heat exchange medium flows from the flow dividing groove body 1212 to a part of the plurality of heat exchange groove bodies 1214, then enters another part of the plurality of heat exchange groove bodies 1214 through the connecting groove body 1211, and finally enters the flow converging groove body 1213 and flows out.

[0062] Among them, the sealing plate 2 is provided with a water inlet interface 231 communicating with the flow dividing groove body 1212 and a water outlet interface 232 communicating with the flow converging groove body 1213. The water inlet interface 231 is used to connect to the outlet of the heat exchange medium source, and the water outlet interface 232 is used to connect to the return port of the heat exchange medium source. The water inlet interface 231 and the water outlet interface 232 are pipe interfaces provided on the sealing plate 2; or, as Figure 3 shown, the water inlet interface 231 and the water outlet interface 232 are through holes penetrating from the second surface to the first surface, and the liquid cooling plate 1000 further includes two nozzles 4, and the two nozzles 4 are respectively installed on the water inlet interface 231 and the water outlet interface 232 so as to be communicated with the heat exchange medium source through pipelines.

[0063] In actual use, since the second surface is attached to the surface of the battery cell 2000, after the liquid cooling plate 1000 and the battery cell 2000 are installed, the water inlet interface 231 and the water outlet interface 232 may be blocked by the battery cell 2000, which is not convenient for connecting external pipelines to the water inlet interface 231 and the water outlet interface 232. In some embodiments, the edge of the flow channel plate 1 extends locally along the first direction X to form a first extension portion 13, that is, the edge portion 11 of the flow channel plate 1 protrudes locally to form the first extension portion 13, and the edge of the sealing plate 2 extends locally along the first direction X to form a second extension portion 23, that is, the connecting portion 21 of the sealing plate 2 protrudes locally to form the second extension portion 23, and the first extension portion 13 corresponds to and is connected to the second extension portion 23; wherein, the first extension portion 13 is provided with a water inlet groove body 131 and a water outlet groove body 132, the water inlet interface 231 and the water outlet interface 232 are arranged on the second extension portion 23, and the water inlet interface 231 is communicated with the shunt groove body 1212 through the water inlet groove body 131, and the water outlet interface 232 is communicated with the confluence groove body 1213 through the water outlet groove body 132. By such an arrangement, the first extension portion 13 and the second extension portion 23 extend out from the shielding position of the battery cell 2000, which is convenient for installation, maintenance and replacement.

[0064] In some embodiments, the flow channel plate 1 is further provided with turbulence protrusions 124, the turbulence protrusions 124 are arranged in the heat exchange groove body 1214, and the number of the turbulence protrusions 124 is multiple, which is used for disturbing the heat exchange medium in the heat exchange groove body 1214 and improving the heat exchange efficiency. Optionally, the turbulence protrusions 124 can also be arranged in at least one of the shunt groove body 1212, the connecting groove body 1211 and the confluence groove body 1213.

[0065] Wherein, the turbulence protrusions 124 can be convex blocks arranged in the first groove 121, or the turbulence protrusions 124 can be integrally stamped in the first groove 121 during stamping.

[0066] The height of the turbulence protrusions 124 does not exceed the depth of the first groove 121. In other words, the height of the turbulence protrusions 124 is lower than or equal to the height of the first protrusion 122, so as not to affect the cooperation between the sealing plate 2 and the flow channel plate 1.

[0067] In some cases, after the explosion-proof valve 2001 relieves pressure or after the pressure is relieved, the tightness of the battery cell 2000 is reduced, and it is easy to have a leakage situation. In some embodiments, the liquid cooling plate 1000 further includes an insulating layer 3, the insulating layer 3 is arranged on the second surface and at least covers the inner wall of the second groove 221. That is to say, the insulating layer 3 covers the inner wall of the second groove 221 and can also cover the entire second surface. By arranging the insulating layer 3 on the second surface, the effect of preventing the battery cell 2000 from leaking electricity is achieved, especially preventing the leakage problem that occurs when the explosion-proof valve 2001 relieves pressure or after the pressure is relieved, taking into account both pressure relief and anti-leakage, and greatly improving the safety.

[0068] Optionally, the insulating layer 3 is made of materials such as thermally conductive insulating silicone, thermally conductive insulating silicone grease, silicon nitride ceramics, etc., to ensure efficient heat exchange between the liquid cooling plate 1000 and the battery cell 2000 under insulating conditions.

[0069] In some embodiments, the above materials are sprayed on the second surface to form the insulating layer 3.

[0070] In other embodiments, the above materials are made into finished films and then covered on the second surface to form the insulating layer 3.

[0071] The embodiments of the present invention have been introduced in detail above. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A liquid cooling plate (1000) for heat exchange with an electric core (2000), characterized in that, Comprising: A runner plate (1) provided with a first groove (121); A sealing plate (2) connected to the runner plate (1) and having a first surface and a second surface, the first surface facing the runner plate (1), the first surface covering the first groove (121) to form a runner for the heat exchange medium to flow through, and the second surface facing away from the runner plate (1) and towards the battery cell (2000); Wherein, a second groove (221) is provided on the second surface, the position of the second groove (221) is offset from that of the first groove (121), and the second groove (221) is configured as a pressure relief space or a pressure relief channel and is used to correspond to the position of the explosion-proof valve (2001) of the battery cell (2000).

2. The liquid cooling plate (1000) according to claim 1, wherein The number of the second grooves (221) is multiple, each of the second grooves (221) extends along a first direction (X), and the multiple second grooves (221) are arranged at intervals along a second direction (Y), and the first direction (X) is perpendicular to the second direction (Y).

3. The liquid cooling plate (1000) according to claim 2, characterized in that, The sealing plate (2) includes a connecting portion (21) and a heat exchange portion (22), the connecting portion (21) surrounds the heat exchange portion (22), the connecting portion (21) is hermetically connected to the runner plate (1), the second groove (221) is provided on the heat exchange portion (22), and both ends of the second groove (221) extend to the connecting portion (21).

4. The liquid cooling plate (1000) according to claim 2, characterized in that, On the surface of the runner plate (1) facing the sealing plate (2), a plurality of first protrusions (122) are provided, and positioning grooves (123) are provided on the first protrusions (122); A plurality of second protrusions (222) are formed on the first surface, and the second protrusions (222) are embedded in the positioning grooves (123).

5. The liquid cooling plate (1000) according to claim 4, characterized in that, The positions of the plurality of second protrusions (222) correspond to those of the plurality of second grooves (221).

6. The liquid cooling plate (1000) according to claim 2, characterized in that, The liquid cooling plate (1000) further includes: An insulating layer (3) provided on the second surface and covering at least the inner wall of the second groove.

7. The liquid cooling plate (1000) according to any one of claims 2-6, characterized in that, The first groove (121) includes a connecting groove body (1211), a flow dividing groove body (1212), a flow collecting groove body (1213) and a plurality of heat exchange groove bodies (1214), the connecting groove body (1211), the flow dividing groove body (1212) and the flow collecting groove body (1213) extend along the second direction (Y), the plurality of heat exchange groove bodies (1214) extend along the first direction (X) and are arranged at intervals along the second direction (Y); one ends of the plurality of heat exchange groove bodies (1214) are connected in parallel through the connecting groove body (1211), one ends of a part of the plurality of heat exchange groove bodies (1214) are connected to the flow dividing groove body (1212), and the other ends of the other part of the plurality of heat exchange groove bodies (1214) are connected to the flow collecting groove body (1213); The sealing plate (2) is provided with a water inlet interface (231) communicating with the flow dividing groove body (1212) and a water outlet interface (232) communicating with the flow collecting groove body (1213).

8. The liquid cooling plate (1000) according to claim 7, wherein An edge of the flow channel plate (1) extends locally along the first direction (X) to form a first extension portion (13), an edge of the sealing plate (2) extends locally along the first direction (X) to form a second extension portion (23), and the first extension portion (13) corresponds to and is connected to the second extension portion (23); The first extension portion (13) is provided with a water inlet tank (131) and a water outlet tank (132), the water inlet interface (231) and the water outlet interface (232) are arranged on the second extension portion (23), the water inlet interface (231) is communicated with the flow dividing tank (1212) through the water inlet tank (131), and the water outlet interface (232) is communicated with the flow collecting tank (1213) through the water outlet tank (132).

9. The liquid cooling plate (1000) according to claim 7, characterized in that, The flow channel plate (1) is further provided with turbulence protrusions (124), and a plurality of the turbulence protrusions (124) are arranged in the heat exchange tank (1214).

10. A battery, characterized in that, Comprising: A battery cell (2000) having an explosion-proof valve (2001); The liquid cooling plate (1000) according to any one of claims 1-9, a second surface of the sealing plate (2) of the liquid cooling plate (1000) is attached to a surface of the battery cell (2000), and a second groove (221) on the second surface corresponds to the position of the explosion-proof valve (2001).

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