A vacuum electrolyte injection system and method for aluminum-cased batteries

By designing an aluminum-cased battery electrolyte vacuum injection system, and utilizing multi-stage vacuum pumping and sealing control, the problems of low injection accuracy, low efficiency, and high cost were solved, achieving efficient and flexible electrolyte injection that is adaptable to various battery models.

CN116487837BActive Publication Date: 2026-07-17GUANGDONG SHUNDE INDUSTRY DESIGN INSTITUTE (GUANGDONG SHUNDE INNOVATIVE DESIGN INSTITUTE) +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGDONG SHUNDE INDUSTRY DESIGN INSTITUTE (GUANGDONG SHUNDE INNOVATIVE DESIGN INSTITUTE)
Filing Date
2023-01-06
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing aluminum-cased battery electrolyte filling equipment suffers from low filling accuracy, low efficiency, easy leakage, and inability to adapt to the needs of different battery models, resulting in low equipment utilization and high costs.

Method used

A vacuum electrolyte injection system for aluminum-cased batteries was designed, comprising components such as a storage tank, an injection pump, a primary injection bottle, a secondary injection bottle, an injection port telescopic cylinder, a vacuum chamber, a vacuum pump, and a solenoid valve. Through multi-stage vacuum pumping and sealing control, precise electrolyte injection and adaptability to multiple battery models are achieved.

Benefits of technology

It improves the accuracy and efficiency of liquid injection, reduces leakage, lowers equipment costs, adapts to various battery models, and enhances the flexibility and efficiency of equipment use.

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Abstract

This invention discloses a vacuum electrolyte injection system and method for aluminum-cased batteries. The system includes a storage tank with at least one parallel delivery path connected to its outlet. Each delivery path is sequentially equipped with an injection pump, a first solenoid valve, a primary injection bottle, a second solenoid valve, a secondary injection bottle, a third solenoid valve, an injection port telescopic cylinder, and an injection sealing port. The vacuum chamber contains at least one injection station for placing batteries. The telescopic rod of the injection port telescopic cylinder is hollow, and the delivery pipe passes through the telescopic rod and connects to the injection sealing port. The telescopic rod can extend into the vacuum chamber to press the injection sealing port against and communicate with the battery's injection hole. The vacuum pump is connected to both the secondary injection bottle and the vacuum chamber, and a solenoid valve is installed on its connecting pipe. A solenoid valve is also installed at the vacuum breaking port of the vacuum chamber. This invention offers advantages such as high injection accuracy, good product quality, high production efficiency, cost savings, and the ability to inject electrolyte into one or more batteries.
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