A multi-layer coiling column battery and its making technology

A cylindrical battery and process technology, applied in primary battery, secondary battery manufacturing, sustainable manufacturing/processing, etc., can solve the problems of large internal resistance, difficulty, and winding difficulty of batteries, so as to improve work efficiency and reduce internal resistance Effect

Inactive Publication Date: 2008-05-28
山东海霸电池有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] At present, the winding of cylindrical batteries is limited to the use of a single-layer positive electrode sheet, a single-layer negative electrode sheet and a separator to separate the positive and negative electrode sheets. For small-capacity batteries, single-layer winding is advisable, but for large-capacit

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  • A multi-layer coiling column battery and its making technology

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0012] As shown in the figure, the present invention includes: a separator 1, a positive electrode sheet 2, and a negative electrode sheet 3. The separator 1, the positive electrode sheet 2, and the negative electrode sheet 3 are all multi-layered, and are stacked and then wound into a cylindrical core. in parallel.

[0013] The process of manufacturing multi-layer wound cylindrical batteries in the present invention: first cut the separator according to the length of the process design, then arrange the cut separator according to the number of layers and install it on the winding needle, first wind the separator one circle, and then gradually Put the negative electrode sheet flatly in the middle of the diaphragm, with the tab end in front, and the tab lead-out position upwards, close the stack, and start winding the negative electrode, so that the t...

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Abstract

A multilayer winding cylindrical cell and the fabrication process thereof comprise a separator, anode plates and cathode plates. The separator, the anode plates and the cathode plates are in multilayer, and the separator, the anode plates and the cathode plates are wound into a cylindrical roll core through layer lamination. The same electrode plates are connected in parallel with each other. The cylindrical cell fabricated by the invention through a multilayer winding technology can efficiently reduce the internal resistance of the cell owing to multilayer winding and mutual connection in parallel of the electrode plates. The size of the anode and the cathode plates using multilayer winding is shorter, and the work efficiency can be improved. The cell capacity can be infinitely increased through a parallel mode.

Description

technical field [0001] The invention relates to a large-capacity cylindrical battery and a manufacturing process thereof, in particular to a multilayer winding cylindrical battery and a manufacturing process thereof. Background technique [0002] With the development of the economy and the improvement of people's living standards, people's demand for large-capacity cylindrical batteries with high energy density is becoming stronger and stronger. Cylindrical batteries have obvious advantages over square batteries. Cylindrical batteries have higher space utilization. The effect is good, and the internal structure is compact, and the effective space is rationally used. [0003] At present, the winding of cylindrical batteries is limited to the use of a single-layer positive electrode sheet, a single-layer negative electrode sheet and a separator to separate the positive and negative electrode sheets. For small-capacity batteries, single-layer winding is advisable, but for large...

Claims

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Application Information

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IPC IPC(8): H01M10/04H01M6/00
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 李兆龙孙先富
Owner 山东海霸电池有限公司
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