Lithium battery electrolyte injection system having electrolyte volatile gas absorption function

Abstract

The invention discloses a lithium battery electrolyte injection system having an electrolyte volatile gas absorption function. The lithium battery electrolyte injection system includes an electrolyte injection unit, a vacuumizing unit, a harmful gas absorption unit and the like. The electrolyte injection unit includes an intermediate belt conveying machine, a battery positioning mold, a lifting board, a first lifting air cylinder, a quantitative electrolyte injector and the like. A weighing and detecting unit includes a front weighing sensor, a rear weighing sensor and a reject conveying machine. The vacuumizing unit includes a seal cover, a first gas pipe joint, a vacuum sensor and a vacuum pump. The harmful gas absorption unit includes a second gas pipe joint, an exhaust fan and a harmful gas absorption bottle. The volume of an inner chamber of a quantitative cylinder in the quantitative electrolyte injector is equal to standard electrolyte injection quantity of the lithium battery, so that the volume of the electrolyte pushed out by the electrolyte injection cylinder is accurately equal to the standard electrolyte injection quantity of the lithium battery. The system has high injection accuracy. During the injection, the harmful gas absorption unit exhausts and absorbs harmful gas, thus avoiding environment pollution caused by the harmful gas.

Description

technical field [0001] The invention relates to battery production equipment, in particular to a battery electrolyte injection machine. Background technique [0002] When the lithium-ion battery is working normally, the negative terminal drawn from the negative current collector and the positive terminal drawn from the positive current collector form an electronic path with the external circuit, and the lithium ions in the electrolyte and the positive and negative active materials form an ion path, an electronic path and an ion path Form a circuit together to achieve the purpose of normal work. As the demand for lithium-ion batteries gradually increases, people have higher and higher performance requirements for them, especially for the cycle performance of the battery, and the liquid injection volume of the battery is an important parameter to ensure the battery cycle. Too little liquid injection will cause the cycle to decay too quickly, resulting in too fast decay of the...

AI Technical Summary

Problems solved by technology

[0007] In view of this, the object of the present invention is to provide a lithium battery electrolyte injection system with electrolyte volatile gas absorption function, to solve the problem of low efficiency of electrolyte injection, poor injection accuracy and inability to inject The technical problem of dealing with the harmful gas produced in the liquid process

Images