Thermal insulation system suitable for kilowatt-level liquid metal battery module

Abstract

The invention discloses a heat preservation system suitable for a kilowatt-level liquid metal battery module. The heat preservation system comprises single liquid metal batteries, a heat preservation box, a stainless steel frame and a container. The single liquid metal battery is located in the heating cavity, and the electric heating element enables the battery to be in a uniform temperature field. The heat preservation boxes with the multiple heating cavities are sequentially placed on the stainless steel frame provided with the air cooling heat dissipation device, when the battery pack works, the negative electrode insulation sealing pieces and the positive and negative electrode current collectors of the single batteries stretch out to the wiring layer, and the effect of reducing the temperature is achieved through rapid air exchange of the heat dissipation device. A plurality of stainless steel frames provided with heat insulation boxes are placed in a container to form a heat insulation system suitable for kilowatt-level liquid metal battery modules, so that unified management is facilitated. The liquid metal battery can solve the problem that when the liquid metal battery works, the negative electrode insulation sealing piece is heated and corroded by volatile electrolyte to cause breakage, meanwhile, the space utilization rate of the battery pack is increased, and the application potential of the liquid metal battery is improved.

Description

technical field [0001] The invention belongs to the technical field of electrochemical energy storage, and in particular relates to a thermal insulation system suitable for kilowatt-level liquid metal battery modules. Background technique [0002] With the rapid development of human civilization, energy issues have increasingly become the key to restricting the sustainable development of the world economy and society. Traditional fossil fuels are facing problems such as resource depletion and environmental pollution. Therefore, in recent years, many countries have begun to vigorously develop new energy sources such as wind energy and solar energy. . Since the output of new energy itself is unstable and difficult to control, cheap, efficient, and long-lived large-scale energy storage technology is an important technology for new energy to be integrated into the grid, but there is currently no suitable high-efficiency energy storage technology. Liquid metal batteries are desi...

AI Technical Summary

Problems solved by technology

[0003] In order to make the liquid metal battery meet the full liquid state operation, its actual operating temperature is generally 300-600 °C, which has high requirements for the heating and heat preservation of the battery module, but the high operating temperature will damage the negative ceramic insulation seal of the battery, resulting in The battery fails, affecting the operation stability of the battery module

At the same time, after the battery leaks, the molten salt electrolyte volatilizes and condenses on the seal at high temperature, causing corrosion and shortening the life of the liquid metal battery module

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