A lithium battery aluminum-plastic film packaging machine with on-line insulation detection function

Abstract

The invention discloses a lithium battery aluminum-plastic film packaging machine with the function of on-line insulation detection. When working, the upper head base drives the upper head and the first insulating support to move downward together, and the lower head base drives the lower seal. The head and the second insulating bracket move upward together, the upper head and the lower head jointly heat-seal the aluminum-plastic film on the side of the lithium battery, the first conductive probe is in contact with the positive tab of the lithium battery, and the second conductive probe is in contact with the positive electrode ear of the lithium battery. The negative pole tab on the lithium battery is in contact and the third conductive probe penetrates into the aluminum-plastic film to make contact with its aluminum layer. The first insulation resistance tester detects the internal short circuit of the lithium battery, and the second insulation resistance tester detects the internal short circuit in the lithium battery. Check whether the aluminum layer and the negative tab are short-circuited. This case realizes the function of on-line insulation testing while the lithium battery is packaged with aluminum-plastic film. Its testing is convenient and practical, which can reduce the cost of using manual insulation tests on lithium batteries one by one after packaging and reduce the probability of misjudgment. It is conducive to improving work efficiency.

Description

[technical field] [0001] The invention relates to a lithium battery aluminum-plastic film packaging machine with the function of on-line insulation detection. [Background technique] [0002] Compared with other types of batteries such as lead-acid and nickel-cadmium, lithium-ion batteries have the advantages of large capacity, high operating voltage, fast charging speed, wide operating temperature range, long cycle life, small size, and light weight. At present, lithium-ion batteries have been widely used in mobile phones, notebook computers, electric tools and other fields, and their application range is becoming wider and wider. [0003] At present, lithium-ion batteries are most widely packaged in aluminum-plastic film flexible packaging. Soft-packed lithium batteries have great advantages over batteries with other packaging structures. After the battery is charged, the aluminum layer is corroded, so in the production process of flexible packaging lithium batteries, seve...

AI Technical Summary

Problems solved by technology

[0003] At present, lithium-ion batteries are most widely packaged in aluminum-plastic film flexible packaging. Soft-packed lithium batteries have great advantages over batteries with other packaging structures. After the battery is charged, the aluminum layer is corroded, so in the production process of flexible packaging lithium batteries, several procedures will be added to detect whether the aluminum-plastic film is short-circuited with the negative tab. At the same time, another defect of lithium-ion batteries is internal short circuit. , the burrs on the positive and negative pole pieces of the battery, dust and defects on the separator will cause internal short circuits, so the internal inspection process is also required to pick out defective products

Most soft-pack lithium-ion battery manufacturers will set up a manual inspection process for short-circuiting between the aluminum-plastic film and the negative electrode tab and the internal short-circuit of the battery after the battery top-sealing process. The responsibility of the staff and the staff is high, and there are often many defective products that have not been detected

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