Liquid cooling plate manufacturing method, liquid cooling plate and battery

Abstract

The invention relates to the technical field of power batteries, and provides a liquid cooling plate manufacturing method, a liquid cooling plate and a battery, and the liquid cooling plate manufacturing method comprises the following steps: performing single-side compounding on a non-metal composite material plate and a glue film to form a runner plate; under the condition of a first temperature interval, the non-metal composite material plate and the adhesive film are subjected to first mold pressing to form a whole, and a runner structure is formed on the side face where the adhesive film is located; under the condition of a second temperature interval, secondary mold pressing is conducted on the runner plate and the metal material plate, so that the runner plate and the metal material plate are integrated, and the metal material plate is attached to the side face where the adhesive film is located; demolding and sampling. According to the scheme, connection between the non-metal composite material plate and the metal material plate can be achieved, the production cost can be reduced conveniently, material selection can be more flexible, and better application prospects are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of power batteries, and in particular to a method for manufacturing a liquid cooling plate, a liquid cooling plate and a battery. Background Art

[0002] At present, in order to make the power battery in a better temperature environment and exert better performance in the application, a liquid cooling plate is usually installed in the power battery. Conventional liquid cooling plates are made of metal materials, such as aluminum extrusion molding or welding between metal plates. However, the cost of pure metal materials is relatively high, and the processing technology consumes a lot of energy and has high processing requirements, which has great limitations in application. Summary of the invention

[0003] In order to overcome at least one disadvantage of the above-mentioned prior art, the purpose of the present application is to provide a method for manufacturing a liquid cooling plate, a liquid cooling plate and a battery.

[0004] The technical means adopted by this application to solve the above technical problems are:

[0005] On the one hand, the present application provides a method for manufacturing a liquid cooling plate, comprising the following steps:

[0006] Composite flow channel plate, the flow channel plate comprises a non-metal composite material plate and an adhesive film, and the non-metal composite material plate and the adhesive film are composited on one side;

[0007] The first molding process is to mold the non-metal composite material plate and the adhesive film under the condition of the first temperature range, so that the non-metal composite material plate and the adhesive film are integrated and a flow channel structure is formed on the side where the adhesive film is located;

[0008] Liquid cooling plate compound, the liquid cooling plate comprises the flow channel plate and the metal material plate, under the condition of the second temperature range, the flow channel plate and the metal material plate are molded for the second time so that the flow channel plate and the metal material plate are integrated, wherein the metal material plate is attached to the side where the adhesive film is located;

[0009] Demoulding and sampling are performed to obtain the liquid cooling plate after molding.

[0010] In the present application scheme, the connection between the non-metallic composite material plate and the metal material plate can be achieved to form an integrated liquid cooling plate. Compared with the liquid cooling plate made of pure metal materials in traditional technology, it is convenient to reduce the production cost, and the material selection can be more flexible, and it has better application prospects.

[0011] In some embodiments, the non-metal composite material plate is made of thermoplastic resin material or thermosetting resin material.

[0012] In some embodiments, the non-metal composite material plate is made of at least one of polypropylene, polyamide, polyurethane, and epoxy resin.

[0013] In some embodiments, the non-metal composite material plate further contains glass fiber or carbon fiber.

[0014] In the solution of the present application, by adding glass fiber or carbon fiber into the non-metal composite material plate, the mechanical properties of the non-metal composite material plate can be improved.

[0015] In some embodiments, the adhesive film is made of at least one of polyurethane adhesive, epoxy resin adhesive, hybrid adhesive, acrylic adhesive, organic silica gel, and polypropylene modified adhesive.

[0016] In some embodiments, the adhesive film has a temperature resistance range, and the maximum temperature value in the first temperature range is less than the maximum temperature value in the temperature resistance range.

[0017] In the present application, by designing the temperature value in the first temperature range, it is possible to avoid the non-metallic composite material plate being subjected to a compression molding operation of the flow channel structure and affecting the performance of the adhesive film due to temperature factors.

[0018] In some embodiments, the temperature value in the second temperature interval at least partially overlaps with the temperature value in the temperature-resistant interval.

[0019] In the solution of the present application, by designing the temperature value in the second temperature range, it is possible to facilitate the bonding between the adhesive film and the metal material plate, and form an integrated structure under the action of molding.

[0020] In some embodiments, before the first molding, the non-metal composite material plate is preheated so that the temperature of the non-metal composite material plate falls within the first temperature range.

[0021] In the solution of the present application, by preheating the non-metallic composite material plate, the non-metallic composite material plate can enter the molding state more quickly, thereby facilitating the molding of the flow channel structure.

[0022] On the other hand, the present application provides a liquid cooling plate, which is made by the liquid cooling plate manufacturing method as described above;

[0023] The liquid cooling plate includes a metal material plate, an adhesive film and a non-metallic composite material plate. The adhesive film and the non-metallic composite material plate are an integrated structure, and a flow channel structure is formed on the side where the adhesive film is located. The metal material plate is attached to the side where the adhesive film is located.

[0024] On the other hand, the present application provides a battery, in which the liquid cooling plate as described above is arranged.

[0025] Other features and advantages of the present application will be described in the subsequent description, or some features and advantages can be inferred or determined without doubt from the contents of the description, or can be learned by implementing the above-mentioned embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a schematic diagram of a process for manufacturing a liquid cooling plate according to an example of the present application.

[0028] Figure 2 This is a schematic structural diagram of a non-metallic composite material plate according to one example of the present application.

[0029] Figure 3 This is a schematic diagram of the structure of a metal material plate according to one example of the present application.

[0030] Figure 4 This is a schematic diagram of a partial cross-sectional structure of a lower liquid cooling plate according to an example of the present application.

[0031] Marking Description:

[0032] 1-flow channel plate, 11-non-metal composite material plate, 12-adhesive film, 13-flow channel structure;

[0033] 2-Metal material plate. DETAILED DESCRIPTION

[0034] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention, and the embodiments described are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present invention.

[0035] It should be noted that: unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0036] At present, there are two main ways to form liquid cooling plates. One is through extrusion molding of metal materials, such as aluminum extrusion molding; however, in this method, the shape and structure of the liquid cooling plate after molding are relatively regular, and the overall size is relatively small, which is usually suitable for large-surface cooling applications of battery cells. As the demand for electricity continues to increase, the overall size of the battery is getting larger and larger. Continuing to use extrusion molding to make liquid cooling plates is not only easily restricted by molding equipment, but the application cost will also increase, resulting in high prices. The other is brazing molding, but the brazing method is highly dependent on the experience of the operator, and the overall process cost is relatively high; moreover, the material used for brazing also needs to be metal, and the cost problem still cannot be improved.

[0037] In order to solve the above-mentioned technical problems in the prior art, the present embodiment provides a method for manufacturing a liquid cooling plate, a liquid cooling plate and a battery. Compared with the liquid cooling plate made of pure metal materials in traditional technology, the present embodiment can reduce the production cost, and the material selection can be more flexible, and has a better application prospect.

[0038] like Figures 1 to 4 As shown, this embodiment provides a method for manufacturing a liquid cooling plate, comprising the following steps:

[0039] The flow channel plate is composited, wherein the flow channel plate 1 comprises a non-metal composite material plate 11 and an adhesive film 12, and the non-metal composite material plate 11 and the adhesive film 12 are composited on one side;

[0040] The first molding process is to mold the non-metal composite material plate 11 and the adhesive film 12 under the condition of the first temperature range, so that the non-metal composite material plate 11 and the adhesive film 12 are integrated, and a flow channel structure 13 is formed on the side where the adhesive film 12 is located;

[0041] Liquid cooling plate compound, the liquid cooling plate includes the flow channel plate 1 and the metal material plate 2, under the second temperature range, the flow channel plate 1 and the metal material plate 2 are molded for the second time, so that the flow channel plate 1 and the metal material plate 2 are integrated, wherein the metal material plate 2 is attached to the side where the adhesive film 12 is located;

[0042] Demoulding and sampling are performed to obtain the liquid cooling plate after molding.

[0043] In some embodiments, before the step of compounding the flow channel plate, the non-metallic composite material plate 11 is cleaned to remove surface impurities of the non-metallic composite material plate 11 to avoid affecting the compounding operation between the non-metallic composite material plate 11 and the adhesive film 12 .

[0044] In some embodiments, the metal material plate 2 is set to be aluminum or steel; before the metal material plate 2 is compounded with the flow channel plate 1, the surface of the metal material plate 2 is cleaned to remove impurities on the surface of the metal material plate 2 to avoid affecting the bonding effect between the metal material plate 2 and the adhesive film 12.

[0045] In some embodiments, after the metal material plate 2 and the runner plate 1 are molded to form a liquid cooling plate, it is necessary to maintain pressure and cool down the mold for a preset time before performing a demolding and sampling step.

[0046] In the above embodiment, the non-metallic composite material plate 11 and the adhesive film 12 are first compounded so that when the flow channel structure 13 of the non-metallic composite material plate 11 is subjected to compression molding, the side on which the flow channel structure 13 is provided already has the adhesive film 12, so that the adhesive film 12 and the non-metallic composite material plate 11 form an integrated structure with better integrity.

[0047] When performing the composite molding operation of the liquid cooling plate, the second temperature range is controlled so that the adhesive film 12 can be in a bonding state, and then the mold is pressed so that the flow channel plate 1 and the metal material plate 2 can form an integrated structure through the adhesive film 12, thereby realizing the connection between the non-metallic composite material plate 11 and the metal material plate 2, and forming an integrated liquid cooling plate. Compared with the liquid cooling plate made of pure metal materials in traditional technology, it is easy to reduce production costs, and the material selection can be more flexible, and it has better application prospects.

[0048] As an application example, the non-metal composite material plate 11 is made of thermoplastic resin material or thermosetting resin material.

[0049] In some embodiments, the non-metal composite material plate 11 is made of at least one of polypropylene, polyamide, polyurethane, and epoxy resin.

[0050] In some embodiments, the non-metal composite material plate 11 further contains glass fiber or carbon fiber.

[0051] In some embodiments, the non-metallic composite material plate 11 is made of thermoplastic resin material, such as any combination of polypropylene material + glass fiber, polypropylene material + carbon fiber, nylon-66 + glass fiber, nylon-66 + carbon fiber, wherein nylon-66 is a polyamide material.

[0052] In some embodiments, the non-metallic composite material plate 11 is made of thermosetting resin material, such as any combination of polyurethane resin + glass fiber, polyurethane resin + carbon fiber, epoxy resin + glass fiber, epoxy resin + carbon fiber.

[0053] By adding glass fiber or carbon fiber into the non-metal composite material plate 11, the mechanical properties of the non-metal composite material plate 11 can be improved, such as enhancing toughness and rigidity.

[0054] As an application example, the adhesive film 12 is made of at least one of polyurethane adhesive, epoxy resin adhesive, hybrid adhesive, acrylic adhesive, organic silica gel, and polypropylene modified adhesive.

[0055] In some embodiments, the adhesive film 12 is initially in a liquid state, is disposed on the non-metal composite material plate 11 by coating, and is integrated with the non-metal composite material plate 11 after solidification.

[0056] In some embodiments, the adhesive film 12 is initially in a solid state, and is laminated on one side with the non-metal composite material plate 11 by hot melting, and then is integrated with the non-metal composite material plate 11 .

[0057] In some embodiments, the adhesive film 12 is made of thermoplastic resin material.

[0058] As one application example, the adhesive film 12 has a temperature resistance range, and the maximum temperature value in the first temperature range is smaller than the maximum temperature value in the temperature resistance range.

[0059] In some embodiments, the temperature resistance range is set between 150-200°C.

[0060] In some embodiments, the first temperature interval is set between 80-120°C.

[0061] By designing the temperature value within the first temperature range, it is possible to avoid the non-metallic composite material plate 11 affecting the performance of the adhesive film 12 due to temperature factors when the flow channel structure 13 is being molded.

[0062] As an application example, the temperature value in the second temperature range at least partially overlaps with the temperature value in the temperature-resistant range.

[0063] In some embodiments, the second temperature interval is set between 150-200°C.

[0064] By designing the temperature value within the second temperature range, it is possible to facilitate the bonding between the adhesive film 12 and the metal material plate 2, and form an integrated structure under the action of molding.

[0065] As an application example, before the first molding, the non-metal composite material plate 11 is preheated so that the temperature of the non-metal composite material plate 11 falls within the first temperature range.

[0066] In some embodiments, the non-metallic composite material plate 11 is preheated before molding, and when the temperature of the non-metallic composite material plate 11 reaches the requirement of the first temperature range, the non-metallic composite material plate 11 is sent to the mold for molding the runner structure 13.

[0067] In some embodiments, the non-metal composite material plate 11 is preheated in the mold, and when the preheating temperature reaches the requirement of the first temperature range, the flow channel structure 13 is molded.

[0068] By preheating the non-metal composite material plate 11 , the non-metal composite material plate 11 can enter the molding state more quickly, thereby facilitating the molding of the flow channel structure 13 .

[0069] On the other hand, the present embodiment provides a liquid cooling plate, wherein the liquid cooling plate is manufactured by the liquid cooling plate manufacturing method as described above;

[0070] The liquid cooling plate includes a metal material plate 2, a film 12 and a non-metallic composite material plate 11. The film 12 and the non-metallic composite material plate 11 are an integrated structure, and a flow channel structure 13 is formed on the side where the film 12 is located. The metal material plate 2 is attached to the side where the film 12 is located.

[0071] By adopting the liquid cooling plate manufacturing method provided in this embodiment, the composite molding of the non-metallic composite material plate 11 and the metal material plate 2 can be achieved, the material selection can be more flexible, and the manufacturing process is simpler, which is convenient for controlling the production cost.

[0072] In addition, this embodiment also provides a battery, in which the liquid cooling plate as described above is arranged.

[0073] In some embodiments, the battery is used to provide electrical energy, and the battery can be used in new energy vehicles and industrial transportation equipment. The liquid cooling plate can perform thermal management on the battery during the operation of the battery.

[0074] By applying the liquid cooling plate provided in this embodiment in the battery, the manufacturing cost of the battery can be reduced and the market competitiveness can be improved.

[0075] The above description is only a specific implementation mode of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should also be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection of the claims.

[0076] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A method for manufacturing a liquid cooling plate, characterized in that: The steps include: Composite flow channel plate, the flow channel plate comprises a non-metal composite material plate and an adhesive film, and the non-metal composite material plate and the adhesive film are composited on one side; The first molding process is to mold the non-metal composite material plate and the adhesive film under the condition of the first temperature range, so that the non-metal composite material plate and the adhesive film are integrated and a flow channel structure is formed on the side where the adhesive film is located; Liquid cooling plate compound, the liquid cooling plate comprises the flow channel plate and the metal material plate, under the condition of the second temperature range, the flow channel plate and the metal material plate are molded for the second time so that the flow channel plate and the metal material plate are integrated, wherein the metal material plate is attached to the side where the adhesive film is located; Demoulding and sampling are performed to obtain the liquid cooling plate after molding.

2. The method for manufacturing a liquid cooling plate according to claim 1, characterized in that: The non-metal composite material plate is made of thermoplastic resin material or thermosetting resin material.

3. The method for manufacturing a liquid cooling plate according to claim 2, characterized in that: The non-metal composite material plate is made of at least one of polypropylene, polyamide, polyurethane and epoxy resin.

4. The method for manufacturing a liquid cooling plate according to claim 3, characterized in that: The non-metal composite material plate further contains glass fiber or carbon fiber.

5. The method for manufacturing a liquid cooling plate according to any one of claims 2 to 4, characterized in that: The adhesive film is made of at least one of polyurethane adhesive, epoxy resin adhesive, hybrid adhesive, acrylic adhesive, organic silica gel, and polypropylene modified adhesive.

6. The method for manufacturing a liquid cooling plate according to claim 5, characterized in that: The adhesive film has a temperature resistance range, and the maximum temperature value in the first temperature range is smaller than the maximum temperature value in the temperature resistance range.

7. The method for manufacturing a liquid cooling plate according to claim 6, characterized in that: The temperature value in the second temperature interval at least partially overlaps with the temperature value in the temperature-resistant interval.

8. The method for manufacturing a liquid cooling plate according to claim 1 or 7, characterized in that: Before the first molding, the non-metal composite material plate is preheated so that the temperature of the non-metal composite material plate falls within the first temperature range.

9. A liquid cooling plate, characterized in that: It is made by the liquid cooling plate manufacturing method as described in any one of claims 1 to 8 above; The liquid cooling plate includes a metal material plate, an adhesive film and a non-metallic composite material plate. The adhesive film and the non-metallic composite material plate are an integrated structure, and a flow channel structure is formed on the side where the adhesive film is located. The metal material plate is attached to the side where the adhesive film is located.

10. A battery, characterized in that: The battery is provided with a liquid cooling plate as described in claim 9 above.

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