Novel material adapter sheet

Abstract

The invention discloses a novel material adapter piece, and relates to the field of materials of lithium ion power battery assembly mechanical parts, a negative electrode adapter piece comprises the following components in percentage by weight: 0-0.03% of nickel, 0-0.03% of tin, 0-0.04% of rare earth elements and the balance of copper and inevitable impurities, and a positive electrode adapter piece comprises the following components in percentage by weight: 0-0.05% of zinc, 0-0.35% of iron, 0-0.05% of nickel, 0-0.05% of tin, 0-0.04% of rare earth elements and the balance of copper and inevitable impurities. The copper adapter sheet comprises the following components in percentage by weight: 0-0.05% of copper, 0-0.03% of magnesium, 0-0.25% of silicon, 0-0.03% of titanium and 0-0.04% of boron which are aluminum and inevitable impurities, the strength and corrosion resistance of the copper adapter sheet can be improved by adding nickel into the copper adapter sheet, the welding performance of the copper adapter sheet can be improved by tin, grains can be refined by rare earth elements, and the comprehensive performance of the adapter sheet is further improved; the strength and hardness of the aluminum adapter sheet can be improved by adding magnesium into the aluminum adapter sheet, the corrosion resistance of the aluminum adapter sheet can be enhanced by zinc, and grains can be refined by titanium and boron, so that the organization structure and performance of the aluminum adapter sheet are improved.

Description

Technical Field

[0001] The present invention relates to the field of materials for mechanical components in the assembly of lithium-ion power batteries, and particularly to a new type of material adapter plate. Background Art

[0002] With the rapid development of electronic devices, the requirement for the charging speed of lithium-ion batteries is getting higher and higher. In fast-charging lithium-ion batteries, the adapter plate plays a crucial role. It is responsible for connecting the various components of the battery to achieve efficient current transmission.

[0003] Currently, the traditional adapter plate materials are mainly single copper or aluminum. Copper has good electrical conductivity, but it has a high cost and is prone to oxidation in certain environments; aluminum has a relatively low cost, but its electrical conductivity is not as good as that of copper, the number and size of metal chip particles are prone to exceed the standard, and it is prone to form electrochemical corrosion when connected to other metals. Especially during fast charging, the passing of a large current will exacerbate these problems, thus affecting the performance and lifespan of the battery. For example, it will cause an increase in the internal resistance of the battery, severe heating, and may even pose a safety hazard.

[0004] Therefore, it is necessary to develop a new type of copper adapter plate and aluminum adapter plate to overcome the deficiencies in the prior art, improve the performance and safety of fast-charging lithium-ion batteries, reduce costs, and extend the battery lifespan. Summary of the Invention

[0005] The purpose of the present invention is to provide a new type of material adapter plate to solve the above-mentioned defects caused by the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A new type of material adapter plate, a negative electrode adapter plate, comprising the following components by weight percentage: nickel 0 - 0.03%, tin 0 - 0.03%, rare earth elements 0 - 0.04%, and the balance being copper and unavoidable impurities.

[0007] A positive electrode adapter plate, comprising the following components by weight percentage: zinc 0 - 0.05%, iron 0 - 0.35%, copper 0 - 0.05%, magnesium 0 - 0.03%, silicon 0 - 0.25%, titanium 0 - 0.03%, boron 0 - 0.04%, and the balance being aluminum and unavoidable impurities.

[0008] Preferably, the preparation of the negative electrode adapter plate includes the following steps:

[0009] S1. Weigh the raw materials according to the above weight percentages, put them into a vacuum induction melting furnace for melting, and fully fuse the raw materials to obtain a uniform alloy liquid;

[0010] S2. Pour the alloy liquid into a pre-designed mold, and after cooling, obtain a copper adapter plate blank;

[0011] S3. Roll the copper adapter blank, and then perform annealing treatment to eliminate rolling stress, improve the flexibility and electrical conductivity of the adapter. Perform surface treatment on the annealed copper adapter to further improve its corrosion resistance and welding performance.

[0012] Preferably, the preparation of the positive electrode adapter includes the following steps:

[0013] S4. Weigh the raw materials according to the above weight percentages, put them into a vacuum induction melting furnace for melting to fully fuse the raw materials and obtain a uniform alloy liquid;

[0014] S5. Pour the alloy liquid into a pre-designed mold, and obtain a copper adapter blank after cooling;

[0015] S6. Perform aging treatment on the aluminum adapter blank to improve its strength and electrical conductivity; and perform anodic oxidation treatment on its surface to form a dense oxide film on the surface of the aluminum adapter, thereby improving its corrosion resistance and insulation performance.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The addition of nickel in the copper adapter can improve the strength and corrosion resistance of the copper adapter, tin can improve its welding performance, and rare earth elements can refine the grains and further improve the comprehensive performance of the adapter;

[0018] 2. The addition of magnesium in the aluminum adapter can improve the strength and hardness of the aluminum adapter, zinc can enhance its corrosion resistance, and titanium and boron can refine the grains and improve its microstructure and performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the copper adapter of the present invention;

[0020] Figure 2 It is a schematic diagram of the aluminum adapter of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0022] The present invention provides a technical solution: a new type of material adapter, the negative electrode adapter is a copper adapter, including the following components by weight percentage: nickel 0-0.03%, tin 0-0.03%, rare earth elements 0-0.04%, and the rest is copper and inevitable impurities.

[0023] The positive electrode connecting piece is an aluminum connecting piece, comprising the following components by weight percentage: zinc 0 - 0.05%, iron 0 - 0.35%, copper 0 - 0.05%, magnesium 0 - 0.03%, silicon 0 - 0.25%, titanium 0 - 0.03%, boron 0 - 0.04%, and the rest is aluminum and inevitable impurities.

[0024] The preparation of the negative electrode connecting piece includes the following steps:

[0025] S1. Weigh the raw materials according to the above weight percentages, put them into a vacuum induction melting furnace for melting to fully fuse the raw materials and obtain a uniform alloy liquid;

[0026] S2. Pour the alloy liquid into a pre-designed mold, and after cooling, obtain a copper connecting piece blank;

[0027] S3. Roll the copper connecting piece blank, and then perform annealing treatment to eliminate the rolling stress, improve the flexibility and conductivity of the connecting piece, and perform surface treatment on the annealed copper connecting piece to further improve its corrosion resistance and welding performance.

[0028] The preparation of the positive electrode connecting piece includes the following steps:

[0029] S4. Weigh the raw materials according to the above weight percentages, put them into a vacuum induction melting furnace for melting to fully fuse the raw materials and obtain a uniform alloy liquid;

[0030] S5. Pour the alloy liquid into a pre-designed mold, and after cooling, obtain a copper connecting piece blank;

[0031] S6. Perform aging treatment on the aluminum connecting piece blank to improve its strength and conductivity; and perform anodic oxidation treatment on its surface to form a dense oxide film on the surface of the aluminum connecting piece, thereby improving its corrosion resistance and insulation performance.

[0032] As is known by common technical knowledge, the present invention can be implemented by other embodiments that do not depart from its spirit or essential features. Therefore, the above-disclosed embodiments are illustrative in all aspects and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are encompassed by the present invention.

Claims

1. A new type of material adapter piece, characterized in that: The negative terminal adapter includes components in the following weight percentages: nickel 0 - 0.03%, tin 0 - 0.03%, rare earth elements 0 - 0.04%, and the balance is copper and unavoidable impurities.

2. A new type of material adapter piece, characterized in that: The positive terminal adapter includes components in the following weight percentages: zinc 0 - 0.05%, iron 0 - 0.35%, copper 0 - 0.05%, magnesium 0 - 0.03%, silicon 0 - 0.25%, titanium 0 - 0.03%, boron 0 - 0.04%, and the balance is aluminum and unavoidable impurities.

3. The negative electrode adapter sheet according to claim 1, wherein: The preparation includes the following steps: S1. Weigh the raw materials according to the above weight percentages, put them into a vacuum induction melting furnace for melting to fully fuse the raw materials and obtain a uniform alloy liquid. S2. Pour the alloy liquid into a pre-designed mold, and after cooling, obtain a copper adapter blank. S3. Roll the copper adapter blank, and then perform annealing treatment to eliminate the rolling stress, improve the flexibility and conductivity of the adapter. Perform surface treatment on the annealed copper adapter to further improve its corrosion resistance and welding performance.

4. The positive electrode adapter tab according to claim 2, characterized in that: The preparation includes the following steps: S4. Weigh the raw materials according to the above weight percentages, put them into a vacuum induction melting furnace for melting to fully fuse the raw materials and obtain a uniform alloy liquid. S5. Pour the alloy liquid into a pre-designed mold, and after cooling, obtain a copper adapter blank. S6. Perform aging treatment on the aluminum adapter blank to improve its strength and conductivity; and perform anodic oxidation treatment on its surface to form a dense oxide film on the surface of the aluminum adapter, thereby improving its corrosion resistance and insulation performance.

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