Reusable liquid metal battery device

Abstract

The invention relates to a reusable liquid metal battery device, comprising: a battery casing, a top cover, a metal sleeve, an insulating sealing material, a negative electrode conductive tube and a valve, wherein a negative electrode current collector, an electrolyte, a positive electrode material and a positive electrode current collector are successively placed in the battery casing; the positive electrode material is placed in the positive electrode current collector; the negative electrode material is placed in the negative electrode current collector; the negative electrode current collector is connected to the negative electrode conductive tube through a negative electrode lead wire; the negative electrode conductive tube passes through the metal sleeve at the center of the top cover to be connected with the valve; and the battery casing and the top cover are in detachable connection. The liquid metal battery device provided by the invention can be disassembled to be reused, isadapted to the optimal adjustment of an active material inside the battery, can simplify the configuration process of the battery, reduces the research and development cost of the liquid metal battery, and detects the air impermeability of the battery casing through the valve.

Description

technical field [0001] The invention relates to the technical field of energy storage batteries, in particular to a reusable liquid metal battery device. Background technique [0002] Energy storage technology is the key technology to eliminate the bottleneck of large-scale development and utilization of renewable energy. It can improve the utilization efficiency of wind power and photovoltaic power generation. At the same time, it can also improve the contradiction between power supply and demand, smooth the peak-valley difference of the power grid, improve the efficiency of traditional power generation, and improve the security of the power grid. sex and stability. Electrochemical energy storage has the characteristics of high energy density, fast response time, low maintenance cost, flexible and convenient installation, etc., and has become a hot development direction of energy storage technology. At present, the main electrochemical energy storage technologies include l...

AI Technical Summary

Problems solved by technology

One or several of ceramics, glass, and molten salt are usually used at the first sealing position. Ceramics and glass are brittle and are prone to cracking during heating or cooling, resulting in seal failure, while molten salt is working It is in a molten state at high temperature and cannot withstand the difference in internal and external air pressure

For the sealing of the second place, the usual method is to weld the top cover and the casing. Although this method has good sealing performance, the battery casing cannot be reused in the development process of the battery. Every time a new component is tested A whole new battery case, top cover, insulating sealing material and other parts and welding operations are required, which not only complicates the battery assembly process, but also increases the cost of battery research and development

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