A method for manufacturing a liquid cooling plate, the liquid cooling plate and the battery

Abstract

This application relates to the field of power battery technology, providing a method for manufacturing a liquid cooling plate, a liquid cooling plate, and a battery, comprising the following steps: bonding a non-metallic composite material plate to a film on one side to form a flow channel plate; under a first temperature range, molding the non-metallic composite material plate and the film together to form an integral structure, and forming a flow channel structure on the side where the film is located; under a second temperature range, molding the flow channel plate and the metal material plate together to form an integral structure, with the metal material plate adhering to the side where the film is located; and demolding and sampling. This application's solution enables the connection between the non-metallic composite material plate and the metal material plate, facilitating reduced production costs and allowing for more flexible material selection, thus offering better application prospects.

Description

Technical Field

[0001] This application relates to the field of power battery technology, and more specifically, to a method for manufacturing a liquid cooling plate, the liquid cooling plate, and a battery. Background Technology

[0002] Currently, to ensure that power batteries can operate in better temperature environments and achieve better performance, liquid cooling plates are typically installed inside the batteries. Conventional liquid cooling plates are made of metal, such as extruded aluminum or welded metal sheets. However, using pure metal materials is costly, and the processing is energy-intensive and requires high precision, thus limiting their application. Summary of the Invention

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

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

[0005] On one hand, this application provides a method for manufacturing a liquid-cooled plate, including the following steps:

[0006] A flow channel plate composite, wherein the flow channel plate comprises a non-metallic composite material plate and an adhesive film, and the non-metallic composite material plate and the adhesive film are laminated on one side;

[0007] In the first molding process, under the first temperature range, the non-metallic composite material plate and the adhesive film are molded together to form an integral whole, and a flow channel structure is formed on the side where the adhesive film is located.

[0008] A liquid cooling plate composite, wherein the liquid cooling plate includes the flow channel plate and the metal material plate, and under a second temperature range, the flow channel plate and the metal material plate are subjected to a second molding to make the flow channel plate and the metal material plate integral, wherein the metal material plate is attached to the side where the adhesive film is located;

[0009] Demolding and sampling are performed to obtain the molded liquid cooling plate.

[0010] In this application, a connection can be made between a non-metallic composite material plate and a metal material plate to form an integrated liquid cooling plate. Compared with liquid cooling plates made of pure metal materials in traditional technology, it can reduce production costs and is more flexible in material selection, thus having better application prospects.

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

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

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

[0014] In this application, by adding glass fiber or carbon fiber into the non-metallic composite material plate, the mechanical properties of the non-metallic 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, silicone adhesive, and polypropylene modified adhesive.

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

[0017] In this application, by designing the temperature values ​​within the first temperature range, the performance of the adhesive film can be avoided from being affected by temperature factors during the molding operation of the non-metallic composite material plate for the flow channel structure.

[0018] In some embodiments, the temperature values ​​in the second temperature range at least partially overlap with the temperature values ​​in the temperature resistance range.

[0019] In this application, by designing the temperature values ​​within the second temperature range, the bonding between the adhesive film and the metal material plate can be facilitated, and an integral structure can be formed under molding.

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

[0021] In this 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 manufactured using the liquid cooling plate manufacturing method 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 integral 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 a liquid cooling plate as described above is disposed.

[0025] Other features and advantages of this application will be set forth in the following description, or some features and advantages may be inferred from the content of the description or determined without doubt, or may be learned by implementing the above embodiments of this application. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a flowchart illustrating a liquid cooling plate manufacturing method as exemplified in this application.

[0028] Figure 2 This is a schematic diagram of the structure of a non-metallic composite material plate as an example of this application.

[0029] Figure 3 This is a schematic diagram of the structure of a metal material plate as an example of this application.

[0030] Figure 4 This is a partial cross-sectional view of the liquid cooling plate in one example of this application.

[0031] Marker explanation:

[0032] 1-Flow channel plate, 11-Non-metallic composite material plate, 12-Adhesive film, 13-Flow channel structure;

[0033] 2-Metal material plate. Detailed Implementation

[0034] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of the present invention; the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort 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 commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. Similar reference numerals and letters denote similar items in the following figures; therefore, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Currently, liquid cooling plates are mainly formed in two ways. One is through metal extrusion molding, such as aluminum extrusion molding. However, this method produces liquid cooling plates with relatively regular shapes and structures, and relatively small overall dimensions, typically suitable for large-area cooling of individual battery cells. As energy demands continue to increase, battery sizes are growing larger. Continuing to use extrusion molding for liquid cooling plates is not only limited by molding equipment but also leads to increasingly higher application costs, resulting in persistently high prices. The other method is brazing molding. However, brazing relies heavily on operator experience, resulting in higher overall process costs. Furthermore, the materials used for brazing also need to be metal, so the cost issue remains unresolved.

[0037] To address the aforementioned technical problems in the prior art, this embodiment provides a method for manufacturing a liquid cooling plate, a liquid cooling plate, and a battery. Compared to liquid cooling plates made of pure metal materials in traditional technology, this embodiment can easily reduce production costs and offers greater flexibility in material selection, thus having better application prospects.

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

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

[0040] In the first molding process, under the first temperature range, the non-metallic composite material plate 11 and the adhesive film 12 are molded together so that the non-metallic 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] The liquid cooling plate is composite, wherein 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 subjected to a second molding to make the flow channel plate 1 and the metal material plate 2 form an integral whole, wherein the metal material plate 2 is attached to the side where the adhesive film 12 is located.

[0042] Demolding and sampling are performed to obtain the molded liquid cooling plate.

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

[0044] In some embodiments, the metal material plate 2 is made of aluminum or steel; before the metal material plate 2 is laminated with the flow channel plate 1, the surface of the metal material plate 2 is cleaned to remove impurities from the surface of the metal material plate 2 and 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 flow channel plate 1 are molded to form a liquid cooling plate, it is necessary to hold pressure and cool and shape it in the mold for a preset time before demolding and sampling.

[0046] In the above implementation scheme, by first combining the non-metallic composite material plate 11 with the adhesive film 12, the non-metallic composite material plate 11 already has the adhesive film 12 on the side where the flow channel structure 13 is provided when it is molded by compression molding, so that the adhesive film 12 and the non-metallic composite material plate 11 form an integral structure with better overall integrity.

[0047] During the composite molding operation of the liquid cooling plate, the second temperature range is controlled so that the adhesive film 12 can be in an adhesive state. Then, through the molding operation of the mold, the flow channel plate 1 and the metal material plate 2 can be integrated through the adhesive film 12 to form an integral structure. This realizes the connection between the non-metallic composite material plate 11 and the metal material plate 2 and forms an integral liquid cooling plate. Compared with the liquid cooling plate made of pure metal materials in the traditional technology, it can reduce production costs and has more flexibility in material selection, and has better application prospects.

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

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

[0050] In some embodiments, the non-metallic 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, or nylon-66 + carbon fiber. 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, and epoxy resin + carbon fiber.

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

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

[0055] In some embodiments, the adhesive film 12 is initially in a liquid state, is applied to the non-metallic composite material plate 11 by coating, and forms an integral part with the non-metallic composite material plate 11 after solidification.

[0056] In some embodiments, the adhesive film 12 is initially in a solid state and is bonded to the non-metallic composite material plate 11 by hot melting on one side, thereby forming an integral part with the non-metallic composite material plate 11.

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

[0058] As one application example, the adhesive film 12 has a temperature resistance range, wherein the maximum temperature value in the first temperature range is less 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 range is set between 80-120°C.

[0061] By designing the temperature values ​​within the first temperature range, the performance of the adhesive film 12 can be avoided from being affected by temperature factors during the molding operation of the non-metallic composite material plate 11 and the flow channel structure 13.

[0062] As one application example, the temperature values ​​in the second temperature range at least partially overlap with the temperature values ​​in the temperature resistance range.

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

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

[0065] As one application example, the non-metallic composite material plate 11 is preheated before the first molding to ensure that the temperature of the non-metallic 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. 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 of the flow channel structure 13.

[0067] In some embodiments, the non-metallic composite material plate 11 is preheated in a 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-metallic composite material plate 11, the non-metallic 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, this embodiment provides a liquid cooling plate, which is manufactured using the liquid cooling plate manufacturing method described above;

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

[0071] By adopting the liquid cooling plate manufacturing method provided in this embodiment, the composite molding of non-metallic composite material plate 11 and metal material plate 2 can be realized. The material selection is more flexible, the manufacturing process is simpler, and the production cost is easier to control.

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

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

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

[0075] The above description is merely a specific embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should also be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0076] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A method for manufacturing a liquid-cooled plate, characterized in that, The method comprises the following steps: flow channel plate compounding, the flow channel plate comprising a non-metal composite plate and an adhesive film, and the non-metal composite plate is compounded with the adhesive film on one side; first-time molding, the non-metal composite plate is molded with the adhesive film under a first temperature range, so that the non-metal composite 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 compounding, the liquid cooling plate comprising the flow channel plate and a metal material plate, the flow channel plate and the metal material plate are molded for the second time under a second temperature range, so that the flow channel plate and the metal material plate are integrated, and the metal material plate is attached to the side where the adhesive film is located; demolding and sampling, to obtain the molded liquid cooling plate.

2. The liquid cold plate fabrication method of claim 1, wherein, The non-metal composite plate is made of thermoplastic resin material or thermosetting resin material.

3. The liquid cold plate fabrication method of claim 2, wherein, The non-metal composite plate is made of at least one of polypropylene, polyamide, polyurethane, and epoxy resin.

4. The liquid cold plate fabrication method of claim 3, wherein, The non-metal composite plate further contains glass fiber or carbon fiber.

5. The liquid cold plate fabrication method of any one of claims 2-4, wherein, The adhesive film is made of at least one of polyurethane adhesive, epoxy resin adhesive, hybrid adhesive, acrylic adhesive, silicone adhesive, and polypropylene modified adhesive.

6. The liquid cold plate fabrication method of claim 5, wherein, 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.

7. The liquid cold plate fabrication method of claim 6, wherein, The temperature value in the second temperature range at least partially overlaps with the temperature value in the temperature resistance range.

8. The liquid cold plate fabrication method of claim 1 or 7, wherein, The non-metal composite plate is preheated before the first-time molding, so that the temperature of the non-metal composite plate falls within the first temperature range.

9. A liquid cold plate comprising: The battery is made of the liquid cooling plate manufacturing method in any one of claims 1-8. The liquid cooling plate comprises a metal material plate, an adhesive film, and a non-metal composite plate, the adhesive film and the non-metal composite plate are integrated, and the adhesive film is located on the side where the flow channel structure is formed, and the metal material plate is attached to the side where the adhesive film is located.

10. A battery, characterized by The battery is provided with the liquid cooling plate in claim 9.

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