Maintenance and regeneration device and maintenance regeneration method for lithium slurry battery

Abstract

The invention provides a maintenance and regeneration device for a lithium slurry battery. The maintenance and regeneration device comprises: a gas nozzle, which can be connected or disconnected witha gas port of the lithium slurry battery; a liquid nozzle, which can be connected or disconnected with a liquid port of the lithium slurry battery; a gas recovery unit, which is connected with the gasnozzle through a first gas pipeline; a gas storage tank, which is connected with the gas nozzle through a second gas pipeline; a liquid recovery unit, which is connected with the liquid nozzle through a first liquid pipeline; a liquid storage tank, which is connected with the liquid nozzle through a second liquid pipeline; and control valves, which are arranged in the gas pipelines and the liquidpipelines. The invention also provides a maintenance and regeneration method for the lithium slurry battery. With the maintenance and regeneration device and the maintenance and regeneration method for the lithium slurry battery provided by the invention, liquid injection, liquid supplementation, liquid exchanging, gas injection and gas exhausting of the lithium slurry battery can be realized, sothe usage performance, safety and airtightness of the lithium slurry battery are improved; the service life of the lithium slurry battery is prolonged; and maintenance and regeneration of the lithiumslurry battery are realized.

Description

technical field [0001] The invention relates to the field of lithium slurry batteries, in particular to maintenance and regeneration equipment and a maintenance and regeneration method for lithium slurry batteries. Background technique [0002] Lithium slurry battery is a new type of high-energy battery. The conductive paste inside the electrode sheet contains a certain proportion of conductive particles suspended or precipitated in the electrolyte. When the battery is subjected to external impact or vibration, because this part of the conductive particles does not bond Fixed, so it can move in the electrolyte and form a dynamic conductive network. The conductive particles in it can only contain conductive agents, or they can be composite particles of active materials and conductive agents. The conductive paste in lithium paste batteries can avoid the problem of battery capacity drop and cycle life attenuation caused by the falling off or loosening of traditional lithium bat...

AI Technical Summary

Problems solved by technology

[0003] However, the lithium slurry battery may have the following problems during long-term use: (1) The side reactions generated during the use of the lithium slurry battery will lead to the gradual failure of the electrolyte, and the electrode active materials and even the surface of the current collector are formed due to side reactions. The SEI film of the lithium slurry battery will continue to thicken, which will lead to an increase in the internal resistance of the lithium slurry battery and a decrease in cycle life; (2) the side reactions generated during the use of the lithium slurry battery will consume the electrolyte, resulting in the internal electrochemical reaction of the battery. Too little electrolyte will affect the conduction of lithium ions in the battery, thereby reducing battery performance; (3) During the use of lithium slurry batteries, on the one hand, overcharging and overdischarging of the battery or side reactions may cause the battery to swell and cause the air pressure in the shell to decrease. On the other hand, long-term use may cause the air pressure in the battery case to decrease, so it cannot play the role of air seal, which will lead to a decrease in the safety and sealing of the battery

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