Fabrication method of laminated lithium battery pole plate
A manufacturing method and technology for lithium batteries, which are applied to electrodes of primary batteries, battery electrodes, circuits, etc., can solve problems such as affecting the rolling effect, reduce the investment of manpower and equipment, improve stability, and save the slitting process. Effect
Inactive Publication Date: 2018-05-04
SHANXI CHANGZHENG POWER TECH CO LTD
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Problems solved by technology
Continuous coating and continuous die-cutting have high efficiency, but there is extension in the material area and foil during the rolling process, and the accumulation of extension to a certain extent will affect the rolling effect
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[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.
[0021] In order to facilitate the understanding of the above-mentioned technical solution of the present invention, the above-mentioned technical solution of the present invention will be described in detail below through a specific usage mode.
[0022] Such as figure 1 As shown, according to a method for manufacturing a laminated lithium battery pole piece described in an embodiment of the present invention,
[0023] Firstly, foil materials 3 are laid at intervals on the coating machine, an...
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Abstract
The invention discloses a fabrication method of a laminated lithium battery pole plate. The fabrication method comprises the following steps of S1, laying foils on a coating machine at intervals, wherein a coating jump region is formed between adjacent foils, paste is uniformly coated on surfaces of the foils by a coating head to form a material region, and the length of the material region is 30-50 times of the length of the coating jump region; S2, rolling to a required thickness; S3, inducing a position, where the coating jump region is ended, of a pole roll rolled in the step S2 through asensor by a die cutting machine, marking the ended position, starting a continuous mode until an initial position of a next coating jump region is reached and die cutting is stopped, repeating die cutting, and cutting the pole roll rolled in the step S2 to the size of a final required pole plate. By lengthening the material region, the coating jump region is shortened, the coating efficiency is improved, the extension accumulation of the material region and the foils during the rolling process is eliminated, the efficiency of a die cutting process is higher than that of a single positioning die cutting process, a splitting process is also omitted, and the investment of manpower and equipment is reduced.
Description
technical field [0001] The invention relates to the technical field of lithium battery production technology, in particular to a method for manufacturing a laminated lithium battery pole piece. Background technique [0002] Lithium battery cells are classified according to their structure, generally there are two types: lamination type and winding type. Among them, stacked cells require dozens of sets of positive and negative electrode sheets and separators to be stacked together in alternating order. At present, the production process of the pole piece is also different: [0003] The first intermittent coating sheet-making process: intermittent coating→rolling→slitting→single-piece positioning die-cutting. [0004] There is a skip coating area between the coating areas. After rolling and slitting, single-piece positioning die-cutting is carried out. There is no cumulative extension of the coating area and the foil during the rolling process, but there are also many dis...
Claims
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IPC IPC(8): H01M4/139H01M4/08
CPCH01M4/08H01M4/139Y02E60/10
Inventor 孙磊安富强
Owner SHANXI CHANGZHENG POWER TECH CO LTD