Nickel-plated heat-treated steel plate with excellent corrosion resistance for battery shell and manufacturing method of nickel-plated heat-treated steel plate
By forming two or more nickel layers on a nickel-plated heat-treated steel plate and controlling the particle size and corrosion potential difference of the nickel layers, the problems of corrosion resistance and strength under thin plating thickness are solved, achieving lightweight and explosion-resistant battery casings, and improving the environmental friendliness and production efficiency of batteries.
Patent Information
- Application Number
- CN202511865865.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-12-11
- Filing Date
- 2025-12-11
- Publication Date
- 2026-06-12
AI Technical Summary
Existing nickel-plated heat-treated steel sheets cannot simultaneously guarantee corrosion resistance, strength, and lightweight when the plating thickness is thin. Furthermore, nickel layer defects such as cracks, pinholes, and voids exist, affecting the explosion resistance of the battery casing and the structural safety.
The structure employs two or more nickel layers, with the unit weight of the base layer and the surface layer decreasing sequentially. The nickel layer is formed through electroplating and heat treatment, controlling the particle size and corrosion potential difference of the nickel layer, reducing the diffusion of iron and nickel, and preventing localized corrosion.
The thin coating thickness improves the corrosion resistance and surface quality of nickel-plated heat-treated steel sheets, enhances the environmental friendliness and battery capacity of battery casings, extends battery life, and improves production efficiency and economy.