Lithium flow battery system driven by virtue of motor

Abstract

The invention provides a lithium flow battery system driven by virtue of a motor. The lithium flow battery system comprises a control device, a gas supply part and a battery module part, wherein gas supplied by the gas supply part enters a liquid storage device under the actions of a motor and a piston of the battery module part, independent, synchronous or successive liquid exchange between a positive pole reaction chamber and a negative pole reaction chamber of a battery reactor is completed, and flow rate of the gas supplied by the gas supply part and a rotating speed of the motor of the battery module part are controlled by virtue of the control device, wherein the piston is separated from suspension liquid in the liquid storage device by virtue of the gas. By virtue of the lithium flow battery system provided by the invention, leakage of the suspension liquid of an electrode or contact between the suspension liquid as well as water vapor and oxygen in the air can be effectively prevented, so that safety of the battery system is improved, and mechanical friction intensification and shortening of life of a mechanical structure which are caused by direct contact between a mechanical part and the suspension liquid of the electrode are also avoided. Besides, the invention also provides a working method of the lithium flow battery system driven by virtue of the motor.

Description

technical field [0001] The invention belongs to the electrochemical power battery technology, and in particular relates to a lithium liquid flow battery system driven by a motor. Background technique [0002] Lithium flow battery is a newly developed electrochemical battery technology. It combines the advantages of lithium battery and flow battery. It is a new type of battery with independent output power and energy storage capacity, high energy density and low cost. secondary battery. It can be widely used in distributed power generation, smart grid, base station energy storage, power grid peak regulation and frequency regulation and other fields. The use of chemical power sources for electrical storage and energy storage is not limited by geographical conditions, and it is expected to achieve large-scale energy storage, which has great social and economic value. [0003] Although lithium-ion flow batteries have many advantages in large-scale energy storage applications, ...

AI Technical Summary

Problems solved by technology

[0003] Although lithium-ion flow batteries have many advantages in large-scale energy storage applications, due to the high viscosity of the electrode suspension, a large mechanical loss will occur when the electrode suspension is circulated by a liquid pump, which seriously reduces the battery capacity. Energy efficiency, while the service life of the liquid pump will be reduced

The liquid pump is also likely to cause leakage of the electrode suspension or contact with water vapor and oxygen in the atmosphere, causing potential safety hazards

Images