A battery cell film bag packaging method, battery preparation method and battery

A technology for batteries and batteries, which is applied in the battery film bag packaging method and the field of battery preparation. It can solve the problems of prone to false welding, increase the difficulty of welding, and reduce the thickness of the battery, so as to simplify the packaging process, reduce the overall thickness, The effect of reducing the overall thickness
CN109273776BActive Publication Date: 2020-11-24EVE ENERGY CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
EVE ENERGY CO LTD
Publication Date
2020-11-24

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Abstract

The invention belongs to the technical field of batteries, and specifically discloses a cell film bag packaging method, a battery preparation method and a battery, wherein the cell bag packaging method includes the following steps: preparing two metal films of a positive electrode metal film and a negative electrode metal film; The conductive part exposing the metal material layer is arranged on the insulating heat-sealing layer of the metal film, and the tab part exposing the metal material layer is arranged on the insulating heat-sealing layer or the insulating protective layer of the metal film; at least one side of the two metal films Heat sealing to form a packaging film bag; place the cell without tabs in the packaging film bag, and make the metal material layer at the conductive part of the positive metal film contact with the positive current collector of the cell, and the conductive part of the negative metal film The metal material layer is in contact with the negative electrode current collector; the unclosed side of the packaging film bag is heat-sealed and a liquid injection port is reserved. The battery film bag packaging method, battery preparation method and battery disclosed by the invention can improve the quality of battery packaging and reduce the overall thickness of the battery.
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Description

technical field

[0001] The invention relates to the technical field of batteries, in particular to a battery film bag packaging method, a battery preparation method and a battery. Background technique

[0002] With the progress of the times and the rapid development of wearable and portable smart electronic products, ultra-thin secondary lithium batteries have been widely used in wearable and smart card devices. People also put forward more requirements for batteries, hoping to meet the needs of batteries While improving the energy density, the thinner the battery, the better.

[0003] The prior art provides a lithium-ion battery without tabs, which includes a positive conductive packaging film, a negative conductive packaging film, and an electric core packaged between the positive conductive packaging film and the negative conductive packaging film, and the positive sheet on the surface of the electric core is provided with Positive electrode blank foil area, the negative...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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