Lithium battery electrolyte injection system with self-checking function

Abstract

The invention discloses a lithium battery electrolyte injection system with a self-checking function. The lithium battery electrolyte injection system comprises a feeding unit, a middle electrolyte injection unit, a middle sealing unit, a weighing detection unit and a discharging unit, wherein the middle electrolyte injection unit comprises a middle belt conveyer, a battery positioning mould, a lifting plate, a first lifting air cylinder and a quantified electrolyte injector; the weighing detection unit comprises a front weighing sensor, a rear weighing sensor and a waste conveyer; and each of the feeding unit and the discharging unit comprises a belt conveyer, a straight sliding rail, a positioning air cylinder, a positioning block, a pickup air cylinder, a corner air cylinder and a vacuum chuck. According to the lithium battery electrolyte injection system, the inner cavity capacity of the quantified electrolyte injector is equal to a standard electrolyte injection amount of lithium batteries, so that the electrolyte amount pushed by an electrolyte injection air cylinder for each time is correctly equal to the standard electrolyte injection amount of lithium batteries, and the electrolyte injection precision is high; and the weighing detection unit can be used for detecting and monitoring the electrolyte injection quality, so that the unqualified products and fault problems of the electrolyte injector can be discovered in time and then the electrolyte injection quality is ensured.

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 purpose of the present invention is to provide a lithium battery electrolyte injection system with a self-test function to solve the problem of low efficiency of electrolyte injection in existing lithium batteries, poor injection accuracy, and the inability to control the quality of the injection. Technical issues detected

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