High-temperature-resistant lithium battery tab copper strip for new energy automobile

Abstract

The utility model belongs to the technical field of lithium battery tab copper strips, and particularly relates to a high-temperature-resistant lithium battery tab copper strip for a new energy automobile, which comprises a copper strip body, a protective coating is coated on the outer surface of the copper strip body, a base layer is arranged in the copper strip body, and the copper strip body is coated with the protective coating on the outer surface of the copper strip body. The surface of the copper strip is subjected to plating treatment, so that the high-temperature resistance of the copper strip can be improved, and meanwhile, the corrosion resistance and the folding resistance of the copper strip can be enhanced, so that the copper strip body is more suitable for high-temperature environments such as high-rate lithium ion batteries, and under the matched use of the high-temperature-resistant layer, the high-temperature-resistant layer adopts nickel-based high-temperature alloy and takes nickel as a main matrix element; the copper strip has excellent high-temperature strength and good comprehensive performance, can bear physical and chemical changes at a high temperature for a long time, is suitable for a high-temperature environment, and can effectively reduce the coefficient of thermal expansion and improve the stability of the material at a high temperature when being subjected to enhancement treatment on the copper strip of the tab.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lithium battery pole ear copper strip technical field, concretely relates to a kind of high-temperature-resistant lithium battery pole ear copper strip for new energy vehicle. BACKGROUND

[0002] Pole ear is the important part of battery, and is divided into positive and negative pole.Electrode material has the condition of using copper plating nickel (Ni-Cu), which is composed of two parts of film and metal strip, and the metal strip part may use copper strip.

[0003] The existing pole ear copper strip has poor high-temperature resistance, and the performance is unstable in high-temperature environment.The copper strip is prone to deformation or damage, and the thermal expansion coefficient of the material increases when the temperature rises, which leads to structural deformation or even damage, and internal stress caused by uneven heating and cooling and different timing of phase change during heat treatment, resulting in plastic deformation, thereby affecting the production quality of the pole ear copper strip.Therefore, we propose a high-temperature-resistant lithium battery pole ear copper strip for new energy vehicle. SUMMARY

[0004] The utility model aims to provide a kind of high-temperature-resistant lithium battery pole ear copper strip for new energy vehicle, to solve the technical problem that the existing lithium battery pole ear copper strip for new energy vehicle is unstable in high-temperature environment, and the copper strip is prone to deformation or damage, and the thermal expansion coefficient of the material increases when the temperature rises, which leads to structural deformation or even damage, and internal stress caused by uneven heating and cooling and different timing of phase change during heat treatment, resulting in plastic deformation, thereby affecting the production quality of the pole ear copper strip.The problem of improving the thermal expansion coefficient of the pole ear copper strip in high-temperature environment is solved, and the high-temperature resistance and stability of the copper strip are improved, thereby meeting the use requirements in extreme environment.

[0005] To solve the above technical problems, the utility model provides a kind of high-temperature-resistant lithium battery pole ear copper strip for new energy vehicle, including: copper strip body, the copper strip body outer surface is coated with protective plating, the copper strip body inside is provided with base layer, the base layer includes copper strip layer, high-temperature-resistant layer and corrosion-resistant layer, the base layer periphery is provided with waterproof layer, and the waterproof layer periphery is provided with freeze-resistant layer.

[0006] Further, the protective plating is made of nickel plating material.

[0007] Further, the high-temperature-resistant layer is made of nickel-based high-temperature alloy.

[0008] Further, the corrosion-resistant layer includes an organic silicon coating, the inner side of the organic silicon coating is provided with a carbon steel metal layer, and the organic silicon coating is coated on the surface of the carbon steel metal layer.

[0009] Further, the waterproof layer is made of aluminum plastic composite tape.

[0010] Further, the freeze-resistant layer adopts polyimide.

[0011] Further, the copper strip body is wrapped with a protective film.

[0012] The utility model discloses beneficial effect is:

[0013] 1. In the utility model, the copper strip body is coated with a protective plating layer on the outer surface, and the plating layer treatment is carried out on the surface of the copper strip, which can improve the high-temperature resistance, enhance the corrosion resistance and folding resistance, and make the copper strip body more suitable for high-temperature environments such as high-rate lithium ion batteries. Under the cooperation of the high-temperature resistant layer, the high-temperature resistant layer adopts nickel-based high-temperature alloy with nickel as the main base element, which has excellent high-temperature strength and good comprehensive performance, can withstand physical and chemical changes under long-term high temperature, is suitable for high-temperature environments, and can effectively reduce the thermal expansion coefficient and improve the stability of the material under high temperature by enhancing the treatment of the tab copper strip.

[0014] 2. In the utility model, the waterproof layer can effectively isolate water, has the properties of waterproofing, high-temperature resistance, insulation and the like, can effectively prevent water penetration and protect the copper strip body from corrosion; the freeze-resistant layer ensures that the tab copper strip can maintain stable electrical performance under low-temperature conditions.

[0015] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0017] Fig. 1 It is the overall structure schematic diagram of the utility model;

[0018] Fig. 2 It is the copper strip body plane internal structure schematic diagram of the utility model;

[0019] Fig. 3 It is the corrosion-resistant layer plane internal structure schematic diagram of the utility model.

[0020] In the figure: 1. Copper strip body; 101. Protective coating; 2. Base layer; 201. Copper strip layer; 202. High temperature resistant layer; 203. Corrosion resistant layer; 2031. Silicone coating; 2032. Carbon steel metal layer; 3. Waterproof layer; 4. Freeze-resistant layer; 5. Protective film. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0022] Example 1

[0023] like Figs. 1-3 As shown, a high-temperature resistant copper strip for lithium battery tabs of new energy vehicles comprises: a copper strip body 1, the outer surface of the copper strip body 1 is coated with a protective coating 101, the protective coating 101 is made of nickel-plated material, and the surface of the copper strip body 1 is plated to improve its high-temperature resistance, while enhancing its corrosion resistance and folding resistance, so that the copper strip body 1 is more suitable for high-temperature environments such as high-rate lithium-ion batteries; a base layer 2 is provided inside the copper strip body 1, and the base layer 2 includes a copper strip layer 201, a high-temperature resistant layer 202 and a corrosion-resistant layer 203, and the high-temperature resistant layer 202 is made of a nickel-based high-temperature alloy with nickel as the main matrix element, which has excellent high-temperature strength and good comprehensive performance, can withstand physical and chemical changes under high temperature for a long time, is suitable for high-temperature environments, and has a great impact on the tabs. The copper strip is reinforced to effectively reduce the thermal expansion coefficient and improve the stability of the material at high temperatures. The corrosion-resistant layer 203 includes a silicone coating 2031. A carbon steel metal layer 2032 is provided on the inner side of the silicone coating 2031. The silicone coating 2031 is coated on the surface of the carbon steel metal layer 2032. The silicone coating 2031 has good corrosion resistance and is light in weight. The carbon steel metal layer 2032 has certain corrosion resistance. The two can be used in conjunction with each other to improve corrosion resistance; the high-temperature resistant layer 202 adopts a nickel-based high-temperature alloy with nickel as the main matrix element. It has excellent high-temperature strength and good comprehensive performance. It can withstand physical and chemical changes at high temperatures for a long time and is suitable for high-temperature environments. The tab copper strip is reinforced.

[0024] Example 2

[0025] like Figs. 1-3As shown, a new energy vehicle lithium battery tab copper strip with high temperature resistance, the peripheral of the base layer 2 is provided with a waterproof layer 3, the peripheral of the waterproof layer 3 is provided with a freeze-resistant layer 4, the waterproof layer 3 adopts an aluminum-plastic composite tape, the aluminum-plastic composite tape is usually composed of an aluminum foil and a plastic film, has a multilayer structure, can effectively isolate moisture, has the properties of waterproof, high temperature resistance, insulation and the like, can effectively prevent moisture penetration, protect the copper tape from corrosion, the freeze-resistant layer 4 adopts polyimide, the polyimide has good high heat resistance, excellent insulation and good mechanical properties, the peripheral of the copper tape body 1 is wound with a protective film 5, the protective film 5 is arranged on the copper tape body 1, the use of the copper tape body 1 can be more convenient, the protective film 5 on the copper tape can avoid the outer surface of the copper tape body 1 from being polluted, affect the use of the copper tape body 1, the outer surface of the copper tape body 1 can not be contaminated with impurities, and the normal use of the copper tape body 1 is ensured.

[0026] In summary, the copper tape body is coated with a protective plating layer, and the copper tape surface is subjected to plating treatment, which can improve its high temperature resistance, enhance corrosion resistance and folding resistance, and make the copper tape more suitable for high-temperature environments such as high-rate lithium-ion batteries. With the cooperation of the high-temperature-resistant layer, the high-temperature-resistant layer adopts nickel-based high-temperature alloy with nickel as the main base element, which has excellent high-temperature strength and good comprehensive performance, can withstand physical and chemical changes under high temperature for a long time, and is suitable for high-temperature environments. The tab copper tape is subjected to strengthening treatment, which can effectively reduce the thermal expansion coefficient and improve the stability of the material at high temperatures. The waterproof layer can effectively isolate moisture and has the properties of waterproof, high temperature resistance, insulation and the like, which can effectively prevent moisture penetration and protect the copper tape from corrosion. The freeze-resistant layer ensures that the tab copper tape can maintain stable electrical performance under low temperature conditions.

[0027] The various devices selected in the application are all general standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0028] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] In the description of the utility model, it is necessary to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0030] Based on the above ideal embodiments of the utility model, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A high temperature resistant copper strip for lithium battery tabs for new energy vehicles, characterized in that: include: A copper strip body (1), wherein the outer surface of the copper strip body (1) is coated with a protective plating layer (101), a base layer (2) is provided inside the copper strip body (1), the base layer (2) comprises a copper strip layer (201), a high temperature resistant layer (202) and a corrosion resistant layer (203), a waterproof layer (3) is provided on the periphery of the base layer (2), and a freeze resistant layer (4) is provided on the periphery of the waterproof layer (3).

2. The high-temperature resistant copper strip for lithium battery tabs for new energy vehicles according to claim 1, characterized in that: The protective plating layer (101) is made of nickel plating material.

3. The high-temperature resistant copper strip for lithium battery tabs for new energy vehicles according to claim 1, characterized in that: The high temperature resistant layer (202) is made of nickel-based high temperature alloy.

4. The high-temperature resistant copper strip for lithium battery tabs for new energy vehicles according to claim 1, characterized in that: The corrosion-resistant layer (203) comprises an organic silicon coating (2031), a carbon steel metal layer (2032) is provided on the inner side of the organic silicon coating (2031), and the organic silicon coating (2031) is coated on the surface of the carbon steel metal layer (2032).

5. The high-temperature resistant copper strip for lithium battery tabs for new energy vehicles according to claim 1, characterized in that: The waterproof layer (3) is made of aluminum-plastic composite tape.

6. The high-temperature resistant copper strip for lithium battery tabs for new energy vehicles according to claim 1, characterized in that: The antifreeze layer (4) is made of polyimide PI.

7. The high-temperature resistant copper strip for lithium battery tabs for new energy vehicles according to claim 1, characterized in that: A protective film (5) is wound around the outer periphery of the copper strip body (1).

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