Soft-packed lithium ion battery hot and cold pressing formation device

Abstract

The invention discloses a soft-packed lithium ion battery hot and cold pressing formation device. The device comprises a rack, a variable-condition charging and discharging power supply, hot pressing formation fixtures, cold pressing fixtures, feeding and discharging mechanisms and a battery grabber. The variable-condition charging and discharging power supply, the hot pressing formation fixtures, the cold pressing fixtures, the feeding and discharging mechanisms and the battery grabber are all arranged on the rack and all controlled by a control mechanism. The feeding and discharging mechanisms are arranged at the two ends of the rack. The cold pressing fixtures are arranged between the hot pressing formation fixtures. The variable-condition charging and discharging power supply is electrically connected with the hot pressing formation fixtures. The hot pressing formation fixtures and the cold pressing fixtures all comprise an aluminum layer pressing plate making contact with a battery. The battery grabber grabs the battery at a time so that the battery can be conveyed among the feeding and discharging mechanisms, the hot pressing formation fixtures and the cold pressing fixtures. The three procedures of formation, hot pressing and cold pressing of the battery are integrated in the same device, the procedures are simplified, product performance and appearance are improved.

Description

technical field [0001] The invention relates to hot and cold pressing forming equipment for soft-pack lithium-ion batteries, which belongs to the technical field of lithium-ion battery manufacturing equipment. Background technique [0002] In the production process of soft-packed lithium-ion batteries, the three processes of hot pressing, cold pressing and forming are very important. Forming is to use the energy of electricity to activate the internal activity of the battery and form an SEI film on the negative electrode of the battery to ensure that the battery has better performance. Excellent charge and discharge performance and cycle life; chemical formation under hot pressure conditions makes the SEI film of the negative electrode finer, increases the cycle life, and at the same time ensures that the battery has a better appearance. [0003] In the current production of soft-pack lithium-ion batteries, the formation of soft-pack batteries and the hot-pressing and cold-p...

AI Technical Summary

Problems solved by technology

This results in the disadvantages of numerous circulation procedures, low production efficiency, high equipment cost, and large footprint of the formed battery.

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