Liquid filling method for lithium battery

Abstract

A method for injecting electrolyte into lithium battery includes laying stainless steel support with liquid injection holes being arranged regularly towards to injection product into soaking box of injection liquid, covering and sealing said box then vacuuming said box to form negative pressure at internal of said battery, injecting electrolyte into said box and automatically sucking in electrolyte by said battery in said box under action of negative pressure.

Description

technical field [0001] The invention relates to the technical field of a liquid injection method, in particular to the technical field of electrolyte injection methods for batteries and capacitors. Background technique [0002] The traditional liquid injection of batteries and capacitors adopts the rotary table type liquid injection, that is, the liquid injection holes of the battery or capacitor to be injected are arranged upwards, and on the rotary table type liquid injection machine, the liquid injection head is inserted into the liquid injection holes of the battery to be injected Before injecting liquid, unplug one of the injection heads, put it in the beaker under it, and suck the air in the other battery injection needles until the electrolyte flows out from the injection head in the beaker and there is no air bubbles in the tube. The liquid injection volume can be adjusted for liquid injection. Each filled battery needs to be weighed to confirm whether the battery i...

AI Technical Summary

Problems solved by technology

The products injected by the above method have poor consistency, small batches, cumbersome operation, and low production efficiency. Usually, only more than 10 liquids can be injected in one rotation, the equipment cost is high, and the repair, maintenance and manpower input are large.