Battery electrolyte injection cup

Abstract

The invention discloses a battery electrolyte injection cup. The battery electrolyte injection cup comprises a cup body, a cup cover fixed to the cup body and an electrolyte injection nozzle fixed to the bottom of the cup body. An electrolyte inlet is formed in the cup cover, and a first sealing head is arranged outside the electrolyte inlet. A vacuum opening is formed in the side face of the cup body, and a first inverted conical surface is arranged at the bottom of the inner wall of the cup body. The inner wall of the electrolyte injection nozzle is sequentially provided with a second inverted conical surface, a circular surface and a first positive conical surface from top to bottom, wherein the second inverted conical surface is tightly connected with the first inverted conical surface, the bottom of the first positive conical surface is connected with an electrolyte injection sealing nozzle, and the electrolyte injection sealing nozzle is communicated with an electrolyte outlet. A sealing opening is further formed in the cup cover, a connecting rod is inserted into the sealing opening, and a second sealing head is arranged at the end of the connecting rod and used for being matched with the circular surface. The battery electrolyte injection cup is good in sealing performance, high in electrolyte injection efficiency and precise in electrolyte injection amount, leakage of an electrolyte and electrolyte residues in the cup body are effectively avoided, time and labor are saved during work, and the automation degree of battery production is greatly increased.

Description

technical field [0001] The invention relates to the technical field of battery production equipment, in particular to a battery liquid injection cup. Background technique [0002] At present, with the wide application of lithium batteries in all walks of life, the research on lithium battery production equipment is also attracting more and more attention. In the production of lithium batteries, the electrolyte needs to be injected into the battery box through the battery injection hole. In the past, this type of operation mostly relied on manual and simple equipment to complete, but this method requires a long injection time, lower injection precision, and more residual injection, which greatly limits the production efficiency of the battery; The poor sealing performance of the liquid injection equipment may cause leakage of the electrolyte or the mixing of air. Since the electrolyte is highly corrosive and dangerous, once it leaks, it will cause unnecessary damage to the h...

AI Technical Summary

Problems solved by technology

In the past, this type of operation was mostly done manually and with simple equipment. However, this method requires a long time for liquid injection, low precision of liquid injection, and a large amount of residual liquid, which greatly limits the production efficiency of the battery. In addition, the simple The liquid injection equipment is poorly sealed, which may cause electrolyte leakage or air mixing. Because the electrolyte is highly corrosive and dangerous, once it leaks, it will cause unnecessary harm to the human body and the environment. air, it may cause an explosion

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