Copper pin of lithium battery of new energy automobile

Abstract

The utility model relates to the technical field of new energy automobile lithium batteries, and discloses a new energy automobile lithium battery copper pin which comprises a pin body, the pin body comprises a reinforced metal wire, a high-purity electrolytic copper core, a first coating and a second coating, the reinforced metal wire is arranged in the high-purity electrolytic copper core, and the second coating is arranged in the high-purity electrolytic copper core. A first coating is arranged on the outer wall of the high-purity electrolytic copper core, a second coating is arranged on the outer wall of the first coating, a first bending part is arranged on the outer wall of the pin body, and a second bending part is arranged on the outer wall of the pin body. According to the utility model, the pin body adopts a multi-layer composite structure, the innermost high-purity electrolytic copper core has extremely high conductivity, the built-in steel reinforced metal wire enhances the strength and stability, and the middle nickel alloy first coating can protect the high-purity electrolytic copper core and enhance the overall mechanical strength by virtue of good corrosion resistance and high hardness; and the graphene modified silver second coating on the outermost layer improves the conductivity, the wear resistance and the oxidation resistance.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology for new energy vehicles, and in particular to a copper pin for a lithium battery for new energy vehicles. Background Technology

[0002] In the current era of rapid development of new energy vehicles, lithium batteries, as the core power source, play a decisive role in the vehicle's range, charging and discharging efficiency, and safety performance. Pins, as key components connecting the lithium battery to external circuits, bear the important task of transmitting current and signals.

[0003] Traditional lithium battery pins have limitations in conductivity, corrosion resistance, and mechanical strength, making it difficult to meet the high-performance requirements of new energy vehicles. For example, poor conductivity leads to large energy transmission losses, poor corrosion resistance makes the battery susceptible to corrosion in complex environments, causing safety hazards, and insufficient mechanical strength makes it prone to breakage during the thermal expansion and contraction of the battery during charging and discharging, affecting battery life. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a copper pin for lithium batteries in new energy vehicles, which aims to improve the limitations of traditional lithium battery pins in terms of conductivity, corrosion resistance, and mechanical strength, making it difficult to meet the high-performance requirements of new energy vehicles.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A copper pin for a lithium battery in a new energy vehicle includes a pin body comprising a reinforcing metal wire, a high-purity electrolytic copper core, a first coating, and a second coating. The high-purity electrolytic copper core has a reinforcing metal wire inside, a first coating on its outer wall, a second coating on its outer wall, a first bend, a second bend, a circular hole, and wings fixedly connected to its outer wall. The outer wall of the wings has hardness test points.

[0007] Preferably, the reinforcing wire is made of steel.

[0008] Preferably, the material of the first coating is a nickel alloy.

[0009] Preferably, the material of the second coating is graphene-modified silver.

[0010] This utility model has the following beneficial effects:

[0011] 1. In this utility model, the lead body adopts a multi-layer composite structure. The innermost high-purity electrolytic copper core has extremely high conductivity. The built-in steel reinforcing wire enhances strength and stability. The middle layer nickel alloy first coating has good corrosion resistance and high hardness, which can protect the high-purity electrolytic copper core and enhance the overall mechanical strength. The outermost graphene modified silver second coating improves conductivity, wear resistance and oxidation resistance. Attached Figure Description

[0012] Figure 1 This is a perspective view of a copper pin for a new energy vehicle lithium battery proposed in this utility model.

[0013] Figure 2 This is a schematic diagram of a partial structure of the copper pin body of a new energy vehicle lithium battery according to the present invention.

[0014] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0015] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the copper pin of a new energy vehicle lithium battery proposed in this utility model.

[0016] Legend:

[0017] 1. Lead body; 2. First bend; 3. Second bend; 4. Reinforcing wire; 5. High-purity electrolytic copper core; 6. First coating; 7. Second coating; 8. Round hole; 9. Wing; 10. Hardness test point. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figure 1 - Figure 4 The present invention provides an embodiment of a copper pin for a lithium battery in a new energy vehicle, comprising a pin body 1, the pin body 1 comprising a reinforcing metal wire 4, a high-purity electrolytic copper core 5, a first coating 6 and a second coating 7, the high-purity electrolytic copper core 5 having a reinforcing metal wire 4 inside, the high-purity electrolytic copper core 5 having a first coating 6 on its outer wall, the first coating 6 having a second coating 7 on its outer wall, the pin body 1 having a first bend 2 on its outer wall, the pin body 1 having a second bend 3 on its outer wall, the pin body 1 having a circular hole 8 on its outer wall, and a wing 9 fixedly connected to the outer wall of the pin body 1, the wing 9 having a hardness test point 10 on its outer wall.

[0020] Specifically, the first bend 2 and the second bend 3 are folded twice, and after being folded inward at 90 degrees, they cannot be broken and are not transparent to light. The lead body 1 adopts a multi-layer composite structure. The innermost layer is a high-purity electrolytic copper core 5, which has extremely high conductivity. The reinforcing metal wire 4 is used to enhance the strength of the high-purity electrolytic copper core 5. The middle layer, the first coating 6, is used to improve the corrosion resistance and high hardness of the lead body 1. The outermost layer is used to enhance the wear resistance and oxidation resistance of the surface of the lead body 1. The hardness test point 10 is used to test the hardness.

[0021] Reference Figure 4 The reinforcing wire 4 is made of steel.

[0022] Specifically, the reinforcing metal wire 4 is set in the innermost layer. It is made of steel and has extremely high conductivity. The steel reinforcing metal wire 4 inside increases the strength of the high-purity electrolytic copper core 5, making it less prone to breakage and more stable.

[0023] Reference Figure 4 The first coating 6 is made of nickel alloy.

[0024] Specifically, the first coating 6 is applied to the intermediate layer and is made of nickel alloy. It has good corrosion resistance and high hardness, which can prevent the high-purity electrolytic copper core 5 from being oxidized and corroded, extend the service life of the pins, and enhance the overall mechanical strength to cope with stress changes such as thermal expansion and contraction.

[0025] Reference Figure 4 The second coating 7 is made of graphene-modified silver.

[0026] Specifically, the second coating 7 is applied to the outermost layer and is made of graphene-modified silver. The excellent conductivity and mechanical properties of graphene, combined with the silver coating, further enhance conductivity while also improving surface wear resistance and oxidation resistance.

[0027] Working principle: The pin body 1 is folded twice at the first bend 2 and the second bend 3, folding inward at 90 degrees without breaking and without allowing light to pass through. The pin body 1 adopts a multi-layer composite structure. The innermost layer is a high-purity electrolytic copper core 5, which has extremely high conductivity. The high-purity electrolytic copper core 5 is reinforced with steel wires 4 inside, which increases the strength of the high-purity electrolytic copper core 5, making it less prone to breakage and cracking, and increasing its stability. The outermost layer is a first coating 6 made of nickel alloy, which has good corrosion resistance and high hardness. On the one hand, it can prevent the high-purity electrolytic copper core 5 from being oxidized and corroded, extending the service life of the pin. On the other hand, it can enhance the mechanical strength of the pin body 1, making it better able to cope with stress changes such as thermal expansion and contraction. The outermost layer is a second coating 7, which is made of graphene-modified silver. Graphene has excellent conductivity and mechanical properties. When combined with the silver coating, it further improves the conductivity of the pin body 1, while also enhancing its surface wear resistance and oxidation resistance.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new energy automobile lithium battery copper pin, comprising a pin body (1), characterized in that: The pin body (1) comprises a reinforcing wire (4), a high-purity electrolytic copper core (5), a first coating layer (6) and a second coating layer (7), the high-purity electrolytic copper core (5) is internally provided with the reinforcing wire (4), the outer wall of the high-purity electrolytic copper core (5) is provided with the first coating layer (6), the outer wall of the first coating layer (6) is provided with the second coating layer (7), the outer wall of the pin body (1) is provided with a first bending portion (2), the outer wall of the pin body (1) is provided with a second bending portion (3), the outer wall of the pin body (1) is provided with a round hole (8), and the outer wall of the pin body (1) is fixedly connected with wings (9); the outer wall of the wings (9) is provided with a hardness test point (10).

2. The new energy vehicle lithium battery copper pin according to claim 1, characterized in that: The reinforcing wire (4) is made of steel.

3. The new energy vehicle lithium battery copper pin according to claim 1, characterized in that: The first coating layer (6) is made of nickel alloy.

4. The new energy vehicle lithium battery copper pin according to claim 1, characterized in that: The second coating layer (7) is made of graphene modified silver.

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