Fast preparation method of wound lithium-ion laminated battery

A lithium-ion, wound-type technology, applied in the direction of secondary batteries, circuits, electrical components, etc., can solve the problems of low production efficiency and complicated preparation process of laminated batteries, and achieve the effect of improving production efficiency

Inactive Publication Date: 2016-09-07
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, laminated batteries have problems such as complicated preparation process and low production efficiency.

Method used

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  • Fast preparation method of wound lithium-ion laminated battery
  • Fast preparation method of wound lithium-ion laminated battery
  • Fast preparation method of wound lithium-ion laminated battery

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Experimental program
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Embodiment Construction

[0018] The present invention will be further described below in conjunction with accompanying drawing:

[0019] like figure 1 Shown, a kind of rapid preparation method of winding type lithium-ion lamination battery, comprises the following steps:

[0020] S1: select a plurality of cut positive electrode monoliths 16, negative electrode monoliths 17 and strip-shaped glue-coated separators 18 for use;

[0021] S2: A plurality of positive pole single pieces and negative pole single pieces are arranged in the order of positive pole single piece 16, negative pole single piece 17, negative pole single piece 17, and positive pole single piece 16 (that is, positive pole single piece 16, negative pole single piece 17, negative pole single piece Monolithic 17, positive electrode monolithic 16, each group of 4 is a sequence of successive cycles, such as figure 2 shown) are arranged on the surface of the diaphragm in turn and fixed to form a composite pole piece. The distance between a...

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Abstract

The invention relates to a fast preparation method of a wound lithium-ion laminated battery. The method comprises the following steps: (1) selecting a plurality of cut single positive pole pieces, single negative pole pieces and a strip membrane for later use; (2) sequentially arranging the single positive pole pieces and the single negative pole pieces on the surface of the membrane in an order of the single positive pole piece, the single negative pole piece, the single negative pole piece and the single positive pole piece as units and forming a composite pole piece in a fixed manner; and (3) winding the composite pole piece through a winding needle, and mutually stacking the wound single positive pole pieces, membrane and single negative pole pieces to form the laminated battery. By the fast preparation method of the wound lithium-ion laminated battery, the wound lithium-ion laminated battery is formed by stacking the positive pole pieces and the negative pole pieces in a winding manner; the minimum structure unit of the wound laminated battery is the single positive pole pieces and the single negative pole pieces; the fabricating, cutting, fixing and transferring steps of a multi-layer structure unit are omitted; the gummed membrane adopted by the method is a continuous un-cut whole body; and the manufacturing efficiency of the laminated battery is improved.

Description

technical field [0001] The invention relates to the technical field of lithium-ion wound laminated batteries, in particular to a rapid preparation method for wound lithium-ion laminated batteries. Background technique [0002] Lithium-ion batteries have the advantages of high energy density, good safety performance, long service life, small self-discharge, green and pollution-free, and are currently widely used in portable mobile devices, hybrid battery vehicles, pure electric vehicles and other fields. [0003] At present, in the field of power lithium-ion batteries, there are mainly two methods for preparing batteries: one is wound-type batteries; the other is laminated batteries. Wound-type batteries are favored by many manufacturers due to their advantages such as simple preparation methods, high production efficiency, and good consistency. However, the wound-type battery itself also has fatal defects, such as the difficulty in controlling the tension of the pole piece ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0583
CPCH01M10/0583Y02E60/10Y02P70/50
Inventor 王丰左龙龙黄刚王晨旭
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY
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