Head, head assembly, encapsulation device and encapsulation method for ultra-thin soft-clad lithium battery

Abstract

The invention belongs to the technical field of lithium batteries, in particular to an ultrathin soft-clad lithium battery head, comprising an encapsulation part and a mounting part, wherein a heatingpipe is arranged in the mounting part. The invention also provides a header assembly, comprising two pairs of headers symmetrically arranged vertically, each pair of headers comprising two headers symmetrically arranged left and right, wherein the headers are the headers mentioned above. The invention also provides a packaging device, comprising a frame, wherein the frame is provided with the head assembly and a transverse adjusting mechanism for adjusting the distance between each pair of heads of the upper and lower pairs of heads. The invention also provides a packaging method, which adjusts the distance between each pair of heads of the upper and lower pairs of heads, folds the aluminum plastic film in half and sends the aluminum plastic film to a pre-packaging position for heat sealing, takes out the aluminum plastic film, inserts a bare cell into a limiting groove of the aluminum plastic film, and packages the top side. The cover head of the invention has respective heating systems, and the battery core is limited not to deviate by the double-angle position seal, so that the ultra-thin soft-clad lithium battery has better appearance and qualified rate of finished product.

Description

technical field [0001] The invention belongs to the technical field of lithium-ion batteries, and in particular relates to a cap for an ultra-thin soft-packed lithium battery, a cap assembly, a packaging device and a packaging method. Background technique [0002] Lithium-ion batteries are distributed in every corner of our lives, and their applications include mobile phones, tablets, laptops, smart watches, mobile power (charging treasure), emergency power, shavers, electric bicycles, electric vehicles, electric buses , tourist vehicles, drones, and other types of power tools. As the carrier of electrical energy and the power source of many devices, it can be said that the use of lithium-ion batteries has penetrated into every aspect of our lives. [0003] Flexible packaging lithium-ion batteries are a common form of lithium-ion batteries, and their basic components are internal cells, external packaging films, and electrolytes responsible for lithium-ion transmission. Am...

AI Technical Summary

Problems solved by technology

[0007] Ultra-thin lithium-ion batteries refer to lithium-ion batteries with a thickness of less than 2mm; when the thickness of flexible-packaged lithium-ion batteries is reduced to 2mm or less, the original conventional aluminum-plastic film punching technology will be difficult to apply to ultra-thin flexible-packaged lithium-ion batteries. On the battery, the main reason is that the punching pit is too shallow, and it cannot even be effectively flushed. In this case, during the battery packaging process, the aluminum-plastic film cannot effectively bind the bare cells of the battery, and the bare cells cannot effectively Positioning, external force or poor alignment will cause the cell to shift in the subsequent packaging process, resulting in poor appearance, unqualified size and low yield of the battery

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