Cooling plate, cooling plate assembly, battery device and electric equipment

Abstract

The utility model discloses a cooling plate, a cooling plate assembly, a battery device and electric equipment, the cooling plate is used for the battery device, the cooling plate comprises a substrate, a runner plate and an anticorrosive coating, the runner plate comprises a first surface and a second surface which are opposite to each other, at least part of the first surface clings to the substrate, and the rest part of the first surface and the substrate jointly define a runner; the runner is used for flowing of a cooling medium; the anti-corrosion layer covers the second surface. By arranging the base plate, the runner plate and the anti-corrosion layer, at least part of the runner plate is tightly attached to the base plate, the other part of the runner plate and the base plate jointly define the runner, the anti-corrosion layer is tightly attached to the face, back to the base plate, of the runner plate, the cooling plate can be protected against corrosion, and the service life of the cooling plate is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a cooling plate, a cooling plate assembly, a battery device and electrical equipment. Background Art

[0002] The temperature of the battery will gradually increase during use. When the temperature is too high, it will cause thermal runaway of the battery, so it is crucial to cool the battery pack. As an important component of liquid cooling, the cooling plate is mainly used to fully contact the surface of the battery through its surface. The cooling medium flowing inside the cooling plate takes away the heat of the battery for heat exchange, thereby reducing the temperature of the battery.

[0003] The existing cooling plate has flow channels on its surface with gaps between the flow channels. Mud, water, dust and other impurities can easily enter the gaps, causing corrosion phenomena such as flow channel perforation and pitting on the cooling plate, which will shorten the service life of the cooling plate. Utility Model Content

[0004] The utility model aims to provide a cooling plate, a cooling plate assembly, a battery device and an electrical device, so as to solve the problem that the flow channel gap of the cooling plate is easy to corrode.

[0005] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0006] In a first aspect, the utility model provides a cooling plate for a battery device, wherein the cooling plate comprises a substrate, a flow channel plate and an anti-corrosion layer, wherein the flow channel plate comprises a first surface and a second surface opposite to each other, wherein at least a portion of the first surface is in close contact with the substrate, and the remaining portion of the first surface and the substrate together enclose a flow channel, wherein the flow channel is used for the flow of a cooling medium; and the anti-corrosion layer covers the second surface.

[0007] In one embodiment, the cooling plate includes a connected connecting portion and a protruding portion, the connecting portion is in close contact with the substrate, the protruding portion protrudes toward a side away from the substrate, and the protruding portion and the substrate enclose the flow channel; the anti-corrosion layer has the same thickness at the connecting portion and the protruding portion, or, based on the substrate, the surface of the anti-corrosion layer facing away from the substrate is parallel to the substrate.

[0008] In one embodiment, the anti-corrosion layer includes any one of epoxy anti-corrosion paint, polyurethane, polyurea, and melamine resin coating.

[0009] In a second aspect, the utility model further provides a cooling plate assembly, comprising a heat insulation plate and a cooling plate as described in any one of the various embodiments of the first aspect, wherein the heat insulation plate is connected to the cooling plate.

[0010] In one embodiment, the flow channel plate includes a protrusion protruding toward a side away from the substrate, and the heat insulation plate is in close contact with a side of the anti-corrosion layer facing away from the protrusion.

[0011] In one embodiment, the flow channel plate further comprises a connecting portion connected to the protruding portion, the connecting portion is in close contact with the substrate, and the heat insulation plate is also in close contact with a side of the anti-corrosion layer facing away from the connecting portion.

[0012] In one embodiment, the thermal insulation board includes any one of melamine resin, silicone, and polyurethane.

[0013] In one embodiment, the cooling plate and the heat insulation plate are an integrated structure.

[0014] In a third aspect, the utility model further provides a battery device, comprising a battery pack and a cooling plate assembly as described in any one of the various embodiments of the second aspect, wherein the cooling plate assembly is connected to the battery pack.

[0015] In a fourth aspect, the utility model further provides an electrical equipment, comprising an electrical device and the battery device as described in the third aspect, wherein the battery device supplies power to the electrical device.

[0016] By setting the substrate, flow channel plate and anti-corrosion layer, at least part of the flow channel plate is in close contact with the substrate, and the other part is enclosed with the substrate to form a flow channel. The anti-corrosion layer is in close contact with the side of the flow channel plate facing away from the substrate, which can protect the cooling plate from corrosion and extend the service life of the cooling plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a perspective view of a cooling plate assembly of one embodiment;

[0019] Figure 2 is a partial cross-sectional view of a cooling plate assembly of one embodiment;

[0020] Figure 3 FIG. 4 is a partial cross-sectional view of a cooling plate assembly according to another embodiment.

[0021] Description of reference numerals:

[0022] 100- cooling plate assembly;

[0023] 10- heat insulation board;

[0024] 20 - cooling plate, 21 - substrate, 22 - flow channel plate, 221 - connecting portion, 222 - protruding portion, 223 - second surface, 224 - first surface, 23 - anti-corrosion layer, 24 - first liquid inlet portion, 25 - second liquid inlet portion, 26 - liquid outlet portion, 27 - flow channel. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0027] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0028] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0029] The embodiment of the utility model provides an electric device, including an electric device and a battery device in the embodiment of the utility model, and the battery device supplies power to the electric device.

[0030] Optionally, the power-consuming device may be an electric vehicle, a hybrid vehicle, a base station, a household power load, an energy storage device, etc. The power-consuming device adopts the battery device in the embodiment of the utility model, which can reduce the risk of thermal runaway of the battery device and improve the safety of the battery device.

[0031] The embodiment of the utility model further provides a battery device, including a battery pack and a cooling plate assembly in the embodiment of the utility model, wherein the cooling plate assembly is connected to the battery pack.

[0032] Optionally, the battery pack includes a battery pack housing and at least one battery. The battery pack may be an energy storage battery pack, a power battery pack, etc., without limitation.

[0033] Optionally, the battery pack shell is made of a material with high structural strength, specifically metal materials, high-strength plastics, ceramics, etc., and metal materials include aluminum, aluminum alloys, magnesium alloys, iron and iron alloys, etc.

[0034] Optionally, the battery pack shell includes an upper shell and a lower shell, and the upper shell and the lower shell are spliced ​​to form the battery pack shell. The upper shell and the lower shell can be connected and fixed by welding, bonding, snapping, screwing, etc.

[0035] Optionally, the battery is housed in a battery pack shell, and the battery may be a square laminated battery, a wound battery, etc., without specific limitation.

[0036] Optionally, the number of batteries may be one or more, such as two, three, four, etc., without specific limitation.

[0037] Optionally, there is one battery and the cooling plate assembly is arranged on at least one side of the battery; or, there are two batteries and one cooling plate assembly, and the cooling plate assembly is sandwiched between the two batteries; or, there are two batteries and three cooling plate assemblies, one of which is sandwiched between the two batteries, and the other two cooling plate assemblies are respectively arranged on opposite sides of the two batteries.

[0038] Optionally, the battery includes a shell, the shell includes a bottom plate and a plurality of side plates, the side plates are connected to the bottom plate and enclosed to form a receiving cavity. The receiving cavity is open at one end opposite to the bottom plate, and the battery cell is received in the receiving cavity.

[0039] The shell is a material with high structural strength, specifically metal materials, high-strength plastics, ceramics, etc. Metal materials such as aluminum, aluminum alloys, magnesium alloys, iron and iron alloys, etc. The shell can be an integrated structure, that is, the bottom plate and the side plates are an integrated structure made by an integrated molding process, and the integrated molding process can be specifically stamping, casting, etc., without limitation. The shell can also be a split structure, and the side plates and the bottom plate can be connected and fixed by welding, bonding, clamping, screwing, etc. The wall thickness of the shell can be roughly uniform everywhere, that is, the thickness of the side plates can be roughly uniform, and the thickness of the bottom plate and the side plates can also be roughly the same.

[0040] The battery also includes a cover plate, which is connected to the opening of the shell to close the accommodating cavity. The connection between the cover plate and the shell can be welding, bonding, clamping, screwing, etc., without limitation. The shape of the cover plate can be roughly the same as that of the bottom plate.

[0041] Optionally, the cooling plate assembly is housed in the battery pack shell and contacts the battery casing; alternatively, the cooling plate assembly directly contacts the outside of the battery pack shell. The number of cooling plate assemblies may be one or more, such as two, three, four, etc., without specific limitation.

[0042] The battery device in the embodiment of the utility model can cool the battery pack by providing a battery pack and a cooling plate assembly in the embodiment of the utility model, thereby avoiding thermal runaway of the battery device and reducing risks.

[0043] Please refer to Figure 1 and Figure 2 The cooling plate assembly 100 of the embodiment of the utility model comprises a heat insulation plate 10 and a cooling plate 20 in the embodiment of the utility model, and the heat insulation plate 10 is connected to the cooling plate 20. The cooling plate 20 in the embodiment of the utility model is firstly introduced in detail below.

[0044] Please refer to Figure 1 and Figure 2 An embodiment of the utility model provides a cooling plate 20 for a battery device. The cooling plate 20 includes a substrate 21, a flow channel plate 22 and an anti-corrosion layer 23.

[0045] Optionally, the substrate 21 is a flat plate, and the shape of the substrate 21 can be rectangular, square, circular, polygonal, etc. The material of the substrate 21 can be aluminum alloy, copper alloy, stainless steel, etc., without specific limitation.

[0046] Optionally, the flow channel plate 22 includes a first surface 224 and a second surface 223 opposite to each other, at least a portion of the first surface 224 is in close contact with the substrate 21, and the rest of the first surface 224 and the substrate 21 together form a flow channel 27 for the flow of cooling medium.

[0047] Optionally, the material of the flow channel plate 22 is the same as that of the aforementioned substrate 21, which can be referred to without further explanation.

[0048] Optionally, the flow channel plate 22 and the base plate 21 may be an integrated structure, that is, the flow channel plate 22 and the base plate 21 are an integrated structure made by an integrated molding process, and the integrated molding process may be stamping, casting, etc. The flow channel plate 22 and the base plate 21 may also be a split structure, and the flow channel plate 22 and the base plate 21 may be connected and fixed by welding, bonding, clamping, screwing, etc., without specific limitation.

[0049] Optionally, the portion of the first surface 224 that is not in close contact with the substrate 21 together with the substrate 21 forms a flow channel 27 , and the cross-section of the flow channel 27 may be square, circular, semicircular, etc., without limitation.

[0050] Optionally, the cooling medium is a cooling medium commonly used in the art, such as water, coolant, refrigerant, etc., without specific limitation.

[0051] Optionally, the number of flow channels 27 may be single or multiple; the flow channels 27 may extend in a straight line or in a curved shape, and all of the above methods are possible and are not specifically limited.

[0052] Optionally, the flow channel 27 further includes an inlet and an outlet. The inlet and the outlet of the flow channel 27 can be provided on the substrate 21, or on the flow channel plate 22, or can be formed by the substrate 21 and the flow channel plate 22 together, which is not specifically limited.

[0053] For example, Figure 1 As shown, the flow channel 27 includes a first inlet, a second inlet and an outlet, the cooling plate 20 includes a first liquid inlet 24, a second liquid inlet 25 and a liquid outlet 26 connected to the protrusion 222 of the flow channel plate 22, the first inlet and the second inlet are both connected to the outlet, and the first inlet and the second inlet are symmetrically arranged along the outlet, and the flow channel 27 extends in a bent shape. The first inlet is opened at the first liquid inlet 24, the second liquid inlet is opened at the second liquid inlet 25, and the liquid outlet is opened at the liquid outlet 26.

[0054] Optionally, the anti-corrosion layer 23 covers the second surface 223 .

[0055] Optionally, the anti-corrosion layer 23 is any one of epoxy anti-corrosion paint, polyurethane, polyurea, and melamine resin coating.

[0056] Optionally, the anti-corrosion layer 23 may be bonded to the second surface 223 or formed by spraying, without limitation.

[0057] Optionally, the anti-corrosion layer 23 is formed by spraying a layer of anti-corrosion material on the surface of the processed cooling plate 20. The material of the anti-corrosion layer 23 can be various materials used in the powder spraying process, anti-corrosion paint, polyurea, and various anti-corrosion coatings that can be sprayed, such as melamine resin, etc., without limitation.

[0058] Optionally, not only the second surface 223 can be sprayed to form the anti-corrosion layer 23 , but also the side of the substrate 21 opposite to the flow channel plate 22 can be sprayed with anti-corrosion material to form the anti-corrosion layer 23 , which can protect the substrate 21 from corrosion and enhance the anti-corrosion effect.

[0059] Optionally, the anti-corrosion layer 23 is made of melamine resin coating and can also have both insulation and thermal conductivity properties.

[0060] By setting the anti-corrosion layer 23 to be any one of epoxy anti-corrosion paint, polyurethane, polyurea, and melamine resin coating, the anti-corrosion layer 23 is sprayed on the surface of the cooling plate 20, which can protect the cooling plate 20 from corrosion and extend the service life of the cooling plate 20. In addition, an anti-corrosion material with both insulation and thermal conductivity can be selected to improve the safety and cooling effect of the cooling plate 20.

[0061] The temperature of the battery will gradually increase during use. When the temperature is too high, it will cause thermal runaway of the battery. Therefore, it is very important to cool the battery pack. As an important component of liquid cooling, the cooling plate 20 is mainly used to fully contact the surface of the battery through its surface. The cooling medium flowing inside the cooling plate 20 takes away the heat of the battery for heat exchange, thereby reducing the temperature of the battery.

[0062] The existing cooling plate 20 has flow channels 27 on its surface, and there are gaps between the flow channels 27. Impurities such as mud, water, and dust can easily enter the gaps, causing corrosion phenomena such as perforation and pitting of the flow channels 27 of the cooling plate 20, which will shorten the service life of the cooling plate 20. For example, when the electrical device is a vehicle, and the battery pack equipped with the cooling plate 20 is hung under the chassis of the vehicle body and the vehicle is driving through rainy days or waterlogged roads, mud and water will enter the gaps between the flow channels 27 of the cooling plate 20, especially from the windward side. The residual mud and water in the gaps will cause corrosion phenomena such as perforation and pitting of the flow channels 27 of the cooling plate 20 under high temperature conditions, which will further cause refrigerant leakage in the cold plate, poor cooling effect of the automobile air conditioning system, and affect the comfort of passengers in the vehicle.

[0063] The cooling plate 20 in the embodiment of the utility model is provided with a substrate 21, a flow channel plate 22 and an anti-corrosion layer 23. At least a portion of the flow channel plate 22 is in close contact with the substrate 21, and another portion is enclosed together with the substrate 21 to form a flow channel 27. The anti-corrosion layer 23 is in close contact with a side of the flow channel plate 22 facing away from the substrate 21, which can protect the cooling plate 20 from corrosion and extend the service life of the cooling plate 20.

[0064] Optional, such as Figure 1 and Figure 2 As shown, the flow channel plate 22 includes a connecting portion 221 and a protruding portion 222 connected to each other. The connecting portion 221 is in close contact with the substrate 21 , and the protruding portion 222 protrudes toward a side away from the substrate 21 . The protruding portion 222 and the substrate 21 enclose a flow channel 27 .

[0065] Optionally, the connection part 221 and the protrusion 222 may be an integrated structure, that is, the connection part 221 and the protrusion 222 are an integrated structure made by an integrated molding process, and the integrated molding process may be stamping, casting, etc. The connection part 221 and the protrusion 222 may also be a split structure, and the connection part 221 and the protrusion 222 may be connected and fixed by welding, bonding, clamping, screwing, etc., without specific limitation.

[0066] Optionally, the connecting portion 221 is in the shape of a plate, and the protruding portion 222 may be in the shape of a cylinder or a prism with an axis parallel to the substrate 21 , etc., without any specific limitation.

[0067] Optionally, the substrate 21 may be a flat plate, or may have a structure similar to that of the flow channel plate 22. For example, the substrate 21 is a flat plate, and the side of the substrate 21 opposite to the flow channel plate 22 is a plane; or, the substrate 21 includes a contact portion and a protrusion, the contact portion is in close contact with the connecting portion 221 of the flow channel plate 22, the protrusion protrudes toward a side away from the flow channel plate 22, and the protrusion and the protrusion 222 enclose the flow channel 27, and the above methods are all possible, and are not specifically limited.

[0068] Optionally, the anti-corrosion layer 23 has the same thickness at the connection portion 221 and the protruding portion 222. Figure 2 Alternatively, with the substrate 21 as a reference, the surface of the anti-corrosion layer 23 facing away from the substrate 21 is parallel to the substrate 21, that is, the thickness of the anti-corrosion layer 23 at the connecting portion 221 is greater than the thickness of the anti-corrosion layer 23 at the protruding portion 222, so that the surface of the anti-corrosion layer 23 facing away from the substrate 21 forms a plane.

[0069] The flow channel plate 22 includes a connected connecting portion 221 and a protruding portion 222. The connecting portion 221 is tightly attached to the substrate 21, and the protruding portion 222 protrudes toward a side away from the substrate 21. The protruding portion 222 and the substrate 21 enclose a flow channel 27. The flow channel 27 is used for the flow of cooling medium, which can take away the heat of the battery for heat exchange, thereby reducing the temperature of the battery, and the anti-corrosion layer 23 can protect the cooling plate 20 from corrosion.

[0070] Please refer to Figure 1 The utility model further provides a cooling plate assembly 100 , comprising a heat insulating plate 10 and the cooling plate 20 in the aforementioned embodiment of the utility model, wherein the heat insulating plate 10 is connected to the cooling plate 20 .

[0071] Optionally, the heat insulation board 10 is located on the side of the anti-corrosion layer 23 opposite to the flow channel plate 22; or, the heat insulation board 10 is located on the side of the substrate 21 opposite to the flow channel plate 22; or, the heat insulation board 10 is located on both the side of the anti-corrosion layer 23 opposite to the flow channel plate 22 and the side of the substrate 21 opposite to the flow channel plate 22.

[0072] Optionally, an anti-corrosion layer 23 is sprayed on the surface of the protruding portion 222 of the flow channel plate 22 , and the heat insulation plate 10 is in close contact with a side of the anti-corrosion layer 23 facing away from the flow channel plate 22 .

[0073] Optionally, the anti-corrosion layer 23 of the cooling plate 20 is in close contact with the second surface 223 of the flow channel plate 22, and when the protrusion 222 of the flow channel plate 22 protrudes toward the side away from the substrate 21, the portion where the anti-corrosion layer 23 is connected to the protrusion 222 of the flow channel plate 22 protrudes together.

[0074] Optionally, the heat insulation board 10 may be a commonly used thermal insulation foam material in the art, such as PO foam or PU foam, or may be a heat insulation board 10 formed by an online foaming process, without specific limitation.

[0075] Optional, such as Figure 3 As shown, the heat insulation board 10 is a flat plate, and the heat insulation board 10 directly contacts the side of the anti-corrosion layer 23 facing away from the protrusion 222 of the flow channel plate 22; or, firstly, foam is pasted on the surface of the connection part 221 of the anti-corrosion layer 23 facing away from the flow channel plate 22, so that the surface of the connection part 221 of the anti-corrosion layer 23 facing away from the flow channel plate 22 and the surface of the protrusion 222 of the anti-corrosion layer 23 facing away from the flow channel plate 22 form a plane, and then the heat insulation board 10 is arranged; or, as Figure 2 As shown, the side of the heat insulation plate 10 facing the cooling plate 20 corresponds to the shape of the flow channel plate 22 to fill the empty groove formed between the surfaces of the protrusions 222 of the anti-corrosion layer 23 facing away from the flow channel plate 22. The above methods are all possible and are not specifically limited.

[0076] By providing a cooling plate assembly 100, including a heat insulation plate 10 and a cooling plate 20, the flow channel plate 22 includes a protrusion 222 protruding from the substrate 21, and the heat insulation plate 10 is in close contact with the side of the anti-corrosion layer 23 facing away from the protrusion 222, the influence of the external environment on the cooling plate 20 can be reduced. The heat insulation plate 10 can also be compressed and rebounded, has a vibration reduction effect, and can effectively reduce the collision damage and noise between the battery pack and the chassis of the vehicle.

[0077] Optionally, the flow channel plate 22 further includes a connecting portion 221 connected to the protruding portion 222 , the connecting portion 221 is in close contact with the base plate 21 , and the heat insulation plate 10 is also in close contact with a side of the anti-corrosion layer 23 facing away from the connecting portion 221 .

[0078] Optionally, similar to the protrusion 222 of the flow channel plate 22, the anti-corrosion layer 23 is tightly attached to the connecting portion 221 of the flow channel plate 22, and the insulation board 10 is also tightly attached to the side of the anti-corrosion layer 23 opposite to the connecting portion 221, that is, the insulation board 10 is completely attached to the surface of the anti-corrosion layer 23 opposite to the flow channel plate 22.

[0079] Optionally, an online foaming process is used to form the insulation board 10. The online foaming process is a plastic processing technology that introduces gas during the plastic processing process to form tiny bubbles inside the plastic material, thereby improving the cushioning and sound insulation properties of the material. During preparation, the foaming slurry is first prepared, and then the foaming slurry is applied to the surface of the cooling plate 20. Thereafter, the chemical reactant in the foaming slurry is heated to release gas to form bubbles, and the foaming slurry is expanded to fill the space between the surface of the connecting portion away from the substrate 21 and the surface of the protruding portion away from the substrate 21. Finally, the foaming material is shaped by cooling to form the insulation board 10.

[0080] By setting the flow channel plate 22 to also include a connecting portion 221 connected to the protrusion 222, the connecting portion 221 is tightly attached to the substrate 21, and the insulation board 10 is also tightly attached to the side of the anti-corrosion layer 23 facing away from the connecting portion 221, so that the insulation board 10 can fully fill the gaps on the surface of the cooling plate 20, further protecting the cooling plate 20 from corrosion.

[0081] Optionally, the heat insulation board 10 includes any one of melamine resin, silicone, and polyurethane.

[0082] Optionally, the material of the heat insulation board 10 can be any one of melamine resin, silicone, and polyurethane, or a composite of multiple materials of melamine resin, silicone, and polyurethane, without specific limitation.

[0083] By providing the heat insulation board 10 including any one of melamine resin, silicone, and polyurethane, it can not only play a role in heat preservation, but also improve the buffering performance and sound insulation performance of the heat insulation board 10, which can effectively reduce the collision damage and noise between the battery pack and the automobile chassis.

[0084] Optionally, the surface of the heat insulation plate 10 opposite to the cooling plate 20 can be a flat surface, a curved surface, an irregular surface, etc., without specific limitation.

[0085] Optionally, the surface of the heat insulation plate 10 opposite to the cooling plate 20 is a plane.

[0086] Optionally, after the foaming slurry expands, the side away from the cooling plate 20 is irregularly bulged, which can be modified and shaped by manual or mechanical operation so that the final insulation board 10 has a flat side opposite to the cooling plate 20 to facilitate subsequent installation.

[0087] By setting the surface of the heat insulation plate 10 opposite to the cooling plate 20 to be a plane, the overall shape of the cooling plate assembly 100 is made more regular, which is convenient for subsequent installation in the battery pack.

[0088] Optionally, the cooling plate 20 and the heat insulation plate 10 are of an integrated structure, that is, the cooling plate 20 and the heat insulation plate 10 are pre-processed as a whole, which is convenient for installation and will not cause damage to the anti-corrosion layer 23 of the cooling plate 20 during disassembly, thereby facilitating disassembly, maintenance and repair.

[0089] By arranging the cooling plate 20 and the heat insulation plate 10 as an integrated structure, there is no need to manually stick foam on the outside of the cooling plate 20 during use, which facilitates installation and saves space and manpower occupied by the equipment.

[0090] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0091] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A cooling plate for a battery device, characterized in that: include: substrate; A flow channel plate, comprising a first surface and a second surface opposite to each other, wherein at least a portion of the first surface is in close contact with the substrate, and the remaining portion of the first surface and the substrate are together enclosed to form a flow channel, wherein the flow channel is used for the flow of a cooling medium; An anti-corrosion layer covers the second surface.

2. The cooling plate according to claim 1, characterized in that The flow channel plate comprises a connecting portion and a protruding portion connected to each other, the connecting portion is in close contact with the substrate, the protruding portion protrudes toward a side away from the substrate, and the protruding portion and the substrate enclose the flow channel; The anti-corrosion layer has the same thickness at the connecting portion and the protruding portion. or, Taking the substrate as a reference, the surface of the anti-corrosion layer facing away from the substrate is parallel to the substrate.

3. The cooling plate according to claim 1, characterized in that The anti-corrosion layer includes any one of epoxy anti-corrosion paint, polyurethane, polyurea, and melamine resin coating.

4. A cooling plate assembly, characterized in that: The invention comprises a heat insulation plate and a cooling plate according to any one of claims 1 to 3, wherein the heat insulation plate is connected to the cooling plate.

5. The cooling plate assembly according to claim 4, characterized in that The flow channel plate comprises a protruding portion protruding toward a side away from the base plate, and the heat insulation plate is in close contact with a side of the anti-corrosion layer facing away from the protruding portion.

6. The cooling plate assembly according to claim 5, characterized in that The flow channel plate further comprises a connecting portion connected to the protruding portion, the connecting portion is in close contact with the base plate, and the heat insulation plate is also in close contact with a side of the anti-corrosion layer facing away from the connecting portion.

7. The cooling plate assembly according to claim 4, characterized in that The heat insulation board includes any one of melamine resin, silica gel and polyurethane.

8. The cooling plate assembly according to claim 4, characterized in that The cooling plate and the heat insulation plate are an integrated structure.

9. A battery device, characterized in that: It comprises a battery pack and a cooling plate assembly as claimed in any one of claims 1 to 8, wherein the cooling plate assembly is connected to the battery pack.

10. An electrical device, characterized in that: It comprises an electric device and the battery device as claimed in claim 9, wherein the battery device supplies power to the electric device.

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