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High-capacity lithium battery

A lithium battery, high-capacity technology, used in lithium batteries, battery pack components, non-aqueous electrolyte batteries, etc., can solve problems such as low assembly efficiency and inability to meet fully automatic production.

Inactive Publication Date: 2012-10-31
DIJIYA ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the assembly efficiency of multi-winding cores in parallel is still not high, and cannot meet the requirements of fully automatic production

Method used

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Experimental program
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Embodiment Construction

[0019] see figure 1 , 4 As shown, it is a preferred embodiment of the high-capacity lithium battery 1 of the present invention, and the positive electrode sheet 3 , the negative electrode sheet 4 , the separator 5 and the electrolyte solution 6 are covered with the packaging structure 2 . Wherein, the positive electrode sheet 3, the negative electrode sheet 4, and the separator 5 are elongated, so that the positive electrode sheet 3, the negative electrode sheet 4, and the separator 5 respectively have a first long side (31, 41, 51), a parallel The second long side (32, 42, 52) of the first long side (31, 41, 51), a first short side (33, 43, 53) and a parallel to the first short side (33, 43, 53) the second short side (34, 44, 54).

[0020] During implementation, the positive electrode sheet 3 is a strip-shaped aluminum foil, and the positive electrode sheet 3 can also be a positive electrode collector of other metal materials. The positive electrode sheet 3 forms an extens...

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Abstract

The invention discloses a high-capacity lithium battery which is in a package structure covering an anode plate, a cathode plate, an isolation film and electrolyte solution. The anode plate, the cathode plate and the isolation film are elongated respectively and are respectively provided with first long sides and second long sides parallel to the first long sides. The first long side of the anode plate forms an anode welding area, and other parts of the anode plate form an anode area. The second long side of the cathode plate forms a cathode welding area, and other parts of the cathode plate form a cathode area. The isolation film is sandwiched between the anode area and the cathode area. When the anode plate, the isolation film and the cathode plate are wound simultaneously, multiple layers of wound anode lugs are formed in the anode welding area, and multiple layers of wound cathode lugs are formed in the cathode welding area. Therefore, requirements for a high-capacity and high-rate battery pack can be met, and automatic production can be achieved so as to reduce cost.

Description

technical field [0001] The invention relates to a lithium battery, especially a high-capacity lithium battery that can meet the battery assembly requirements of large capacity and high rate, and can be produced automatically to reduce costs. Background technique [0002] At present, lithium batteries are mainly assembled by stacking or winding, among which, such as Figure 5 As shown, the separator a3 is sandwiched between the positive electrode sheet a1 and the negative electrode sheet a2 in the laminated assembly method, each positive electrode sheet a1 is welded with a positive electrode tab a4, and each negative electrode sheet a2 is welded with a negative electrode tab a5 respectively, Each positive pole tab a4 is welded to the positive pole of the lithium battery at the same time, and each negative pole tab a5 is welded to the negative pole of the lithium battery at the same time. And as Image 6 As shown, the positive electrode sheet b1, the negative electrode sheet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/052H01M2/26
CPCY02E60/122Y02E60/10
Inventor 黄文弘
Owner DIJIYA ENERGY SAVING TECH
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