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Electrode structure of spiral-wound electrode battery and manufacturing method of structure

A battery electrode and winding electrode technology, which is applied in the manufacture of secondary batteries, winding/folding electrodes, cylindrical shell batteries/batteries, etc., can solve the problems of poor safety performance and easy to loose, and improve safety. , the effect of preventing loosening

Inactive Publication Date: 2019-10-25
ZHANGZHOU WANBAO ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention improves the above problems, that is, the technical problem to be solved by the present invention is that the welding process of the positive electrode lug made of aluminum and the housing made of stainless steel is prone to loosening, and the safety performance is poor

Method used

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  • Electrode structure of spiral-wound electrode battery and manufacturing method of structure
  • Electrode structure of spiral-wound electrode battery and manufacturing method of structure
  • Electrode structure of spiral-wound electrode battery and manufacturing method of structure

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Embodiment 2

[0044] Embodiment 2, there are arc-shaped slots (420, 510) on both sides of the bending part of the positive tab and the negative tab, and the design of the arc-shaped slots (420, 510) can satisfy During the ear bending process, there will be no arching on both sides, which will cause the positive electrode ear to be squeezed and deformed when the upper cover and the lower case are sealed. On the other hand, the design of the arc-shaped slot can also provide short-circuit protection. When the temperature of the battery is too high in an abnormal state and the battery bulges, the upper case can pull the positive tab and break it at the bend to realize the circuit breaker and circuit breaker protection.

[0045] In this embodiment, an explosion-proof cover 70 is buckled on the upper edge of the lower shell, the upper cover is covered on the outer periphery of the explosion-proof cover and connected with the peripheral side of the lower shell by pressure riveting, and the material...

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Abstract

The invention provides an electrode structure of a spiral-wound electrode battery and a manufacturing method of the structure. The structure comprises a lower casing and an upper cover of a stainlesssteel material, a winding core and an electrode isolation assembly wound around the winding core are fixed in the inner middle portions of the lower casing and the upper cover, and the periphery of the electrode isolation assembly includes an anode tab and a cathode tap extending to upper and lower portions of the electrode isolation assembly respectively; the anode tab made of aluminum is connected with a positive plate; the cathode tab made of nickel is connected with a negative plate; and the external surface in the upper end surface of the anode tab is connected with a nickel plate, and the nickel plate is welded to the lower surface of the upper cover. Thus, tab welding is ensured, loosening is prevented, and the safety is improved.

Description

technical field [0001] The invention relates to a winding electrode battery electrode structure and a manufacturing method thereof. Background technique [0002] The Swiss-roll electrode is a strip-shaped positive and negative electrode with a separator sandwiched between them. The cylindrical electrode combination formed by winding is placed in a cylindrical container. This form of electrode has a large surface area and a compact structure. It is commonly used as a sub-chemical power source, and sometimes an electrolytic battery is also used. In order to improve the processing efficiency and facilitate the connection of cylindrical batteries, the upper and lower ends of the electrodes must be welded to the extended tabs. The tabs are divided into three materials. The positive electrode of the battery is made of aluminum (Al), and the negative electrode is made of nickel. (Ni) material, the negative electrode also has nickel-plated copper (Ni-Cu) material, the cylindrical b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04H01M2/26H01M2/34
CPCH01M10/0422H01M10/0431H01M50/538H01M50/572Y02E60/10Y02P70/50
Inventor 刘双飞吴建平吴永文吴劲贤周开礼王雁斌
Owner ZHANGZHOU WANBAO ENERGY TECH CO LTD
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