A method for solving internal gas and electrolyte residues during the formation of hard-shell lithium batteries

Abstract

The invention belongs to the technical field of lithium batteries, and in particular relates to a method for solving the problem of internal gas and electrolyte residue during formation of a hard-shell lithium battery. The invention mainly solves the problem that the hard-shell lithium-ion battery cannot discharge excess electrolyte inside the battery when discharging gas, which affects the performance and life of the battery. The technical solution of the present invention is: a method for solving the problem of internal gas and electrolyte residue during the formation of a hard-shell lithium battery includes the following steps: (1) placing the hard-shell lithium battery on the battery positioning mechanism, adjusting the negative load on the battery positioning mechanism; Pressure P1, positive pressure P2, time T1 of the vacuum controller, time T2 of the nitrogen controller; (2) Turn on the switch of the battery positioning mechanism; (3) Turn on the start switch of the battery positioning mechanism; (4) When the pressure is maintained again At time T4, the pressure head of the battery rises, and the operator takes out the battery and installs the battery explosion-proof valve. The invention has the advantages of stable performance and convenient use.

Description

Technical field [0001] The invention belongs to the technical field of lithium batteries, and in particular relates to a method for solving internal gas and electrolyte residuals during formation of a hard-shell lithium battery. Background technique [0002] At present, large-capacity hard-shell lithium-ion batteries are mainly used in power and energy storage systems. The reason is that lithium-ion batteries have the advantages of high energy density, long life, and low pollution. However, in the actual production process, it is found that the hard-shell lithium-ion battery produces more gas inside the battery after formation, and there is excess electrolyte remaining, which seriously affects the performance of the battery. Now for the method of dealing with the gas generated during the formation of hard-shell batteries, use a syringe to insert the battery explosion-proof valve during formation and discharge the gas generated during formation during formation, but this method ca...

AI Technical Summary

Problems solved by technology

[0003] The invention mainly aims at the problem that the hard-shell lithium-ion battery cannot discharge excess electrolyte inside the battery when discharging gas, and the use of a syringe will communicate with the atmosphere, and moisture will enter the inside of the battery, which will affect the performance and life of the battery. The method of internal gas and electrolyte remaining when shell lithium battery is formed