High-speed top sealing method of soft package lithium metal battery
A technology of lithium metal batteries and metal batteries, which is applied in the direction of secondary batteries, battery boxes/coats, small-sized batteries/battery packs, etc., and can solve the problems of low production efficiency and high production costs
Pending Publication Date: 2021-05-07
HUIZHOU HUIDERUI LITHIUM BATTERY TECHNOLOGY CO LTD
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Problems solved by technology
The current lithium battery top sealing method is to put the bare cell units into the aluminum-plastic film case, and then side seal after the top sealing alone, which has low production efficiency and high production cost.
Method used
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Embodiment Construction
[0013] The gist of the present invention is to top seal a series of multiple unit aluminum-plastic film casings with bare cells at one time to obtain a semi-finished battery cell, which greatly accelerates the top sealing rate, thereby improving the production efficiency of the entire soft-packed lithium metal battery, as follows The content of the present invention will be further described in conjunction with the examples. The content mentioned in the examples does not limit the present invention, and the selection of each raw material in the material can be adapted to local conditions and has no substantial impact on the result.
[0014] Such as figure 1 A kind of high-speed top-sealing method of soft pack lithium metal battery, comprises the following steps successively:
[0015] A. Weld the positive electrode containing tab metal strip and the negative pole containing tab strip on the positive and negative electrode sheets 4 and 5 respectively, and wind the positive and n...
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The invention relates to the field of chemical batteries, and particularly relates to a high-speed top sealing method of a soft package lithium metal battery. The method sequentially comprises the steps of A, respectively welding a tab-film-containing metal belt of the positive electrode and a tab-film-containing metal belt of the negative electrode on a positive electrode plate and a negative electrode plate, and winding the positive electrode and the negative electrode with the tab-film-containing metal belts together with a diaphragm to obtain a naked battery cell; B, folding an aluminum-plastic film up and down to form a string of multiple unit aluminum-plastic film shells, and placing the naked battery cells into the formed unit aluminum-plastic film shells, wherein the naked battery cells are in one-to-one correspondence with the unit aluminum-plastic film shells; C, performing one-time top sealing on a string of multiple unit aluminum plastic film shells with the naked battery cells to obtain a battery cell semi-finished product; and D, splitting the battery cell semi-finished product into single unit aluminum-plastic film shells with naked battery cells, and performing side sealing on the single unit aluminum-plastic film shells to obtain the packaged battery cell. The production efficiency of the whole soft package lithium metal battery is improved by two times or above, and the production cost is greatly reduced.
Description
technical field [0001] The invention relates to the field of chemical batteries, in particular to a high-speed top sealing method for soft-packed lithium metal batteries. Background technique [0002] The pouch lithium metal battery is just a polymer shell on the lithium-ion battery core. In terms of structure, it is packaged with aluminum-plastic film. In the event of a safety hazard, the soft-pack battery will only blow up and crack at most, and will not explode, so its application range is getting wider and wider. The current lithium battery top sealing method is to put the bare cell units into the aluminum-plastic film case, and then side seal after the top sealing is completed separately. The production efficiency is low and the production cost is high. Contents of the invention [0003] In view of the above-mentioned technical defects, the present invention provides a high-speed top sealing method. [0004] In order to solve the above-mentioned technical problems, ...
Claims
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Login to View More IPC IPC(8): H01M10/0587H01M50/10
CPCH01M10/0587Y02E60/10Y02P70/50
Inventor 潘文硕何献文高宗卿
Owner HUIZHOU HUIDERUI LITHIUM BATTERY TECHNOLOGY CO LTD