Lithium ion battery formation hydrojet-proof device

Abstract

The invention discloses a lithium ion battery formation hydrojet-proof device. The lithium ion battery formation hydrojet-proof device comprises a connecting pipe assembly, a valve, a liquid accumulating chamber, and a communicating pipe; a first end of the connecting pipe assembly is arranged outside the liquid accumulating chamber, and a second end of the connecting pipe assembly is arranged inthe liquid accumulating chamber; the first end of the connecting pipe assembly is provided with an opening, and the second end of the connecting pipe assembly is sealed; the connecting pipe assembly is provided with a backflow hole, and a liquid discharge hole; the backflow hole and the liquid discharge hole are arranged in the liquid accumulating chamber; the liquid discharge hole is arranged onone side of the backflow hole far away from the first end of the connecting pipe assembly; the diameter of the liquid discharge hole is designed to be larger than that of the backflow hole; the valveis arranged on the connecting pipe assembly; and the communicating pipe is connected with the liquid accumulating chamber.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a lithium-ion battery formation anti-spray device. Background technique [0002] Since the first lithium-ion battery was manufactured by Sony, lithium-ion batteries have been successfully used in digital products such as mobile phones and notebooks. In the past ten years, lithium-ion batteries have developed rapidly in the fields of passenger cars, commercial vehicles, and electric vehicles for buses. Nowadays, people pay more and more attention to the long battery life of lithium-ion batteries, and the requirements for the mass energy density and volume energy density of lithium-ion batteries are getting higher and higher, which makes lithium-ion battery manufacturers pay attention to the internal volume of the battery case during the manufacturing process. Utilization is increasing. As the compaction density of the material increases, the design porosity of the pole piece d...

AI Technical Summary

Problems solved by technology

In the process of formation, when the buffer space in the battery case is insufficient, the electrolyte overflows during the charging process

This not only wastes the electrolyte, but also increases the manufacturing cost, and the weight of the sprayed liquid cannot be accurately estimated, resulting in poor battery weight consistency.

The sprayed acidic electrolyte will corrode the battery casing, corrode the equipment, pollute the environment, and bring a series of troubles to the production, so this application is proposed

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