Single coiled core, lithium battery with single coiled core and continuous coiling method for single coiled core

Abstract

The invention discloses a single coiled core, a lithium battery with the single coiled core and a continuous coiling method for the single coiled core. A positive zone on the surface of a positive plate of the single coiled core corresponds to a negative zone on the surface of a negative plate of the single coiled core; one side of the positive plate is provided with a plurality of positive tabs, and one side of the negative plate is provided with a plurality of negative tabs; the plurality of negative tabs and the plurality of positive tabs are staggerly arranged, so the plurality of positive tabs gather and form a positive tab group and the plurality of negative tabs gather and form a negative tab group after successive lamination and continuous coiling of the positive plate, a first isolation membrane, the negative plate and a second isolation membrane, and thus, the single coiled core has high current discharging capability; when the single coiled core is arranged in the shell of the lithium battery, assembling is facilitated, and conductive performance is improved.

Description

technical field [0001] The invention relates to a single winding core, a lithium battery with a single winding core and a continuous winding method for a single winding core, especially a method capable of enabling a single winding core to have a large current discharge capability and enabling a single winding core The lithium battery can be assembled conveniently when the single winding core is combined in the casing, and the conductivity can be improved. Background technique [0002] At present, the winding core of lithium batteries mainly adopts two assembly methods: lamination or winding. Among them, the winding assembly method is to wrap the positive electrode sheet on the negative electrode sheet to form the negative electrode tab at one end of the negative electrode sheet at the edge of the winding core. , the positive tab of the positive plate is located in the single winding core in the center of the winding core. And because the positive pole tab is located at the...

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Problems solved by technology

[0003] In addition, the way of winding with a single winding core is only to set a single positive tab on the positive sheet and a single negative tab on the negative sheet, and cannot produce the effect of high-rate discharge

In order to improve the above-mentioned deficiencies, so as to have the ability to discharge large currents, at present, most of them use multi-winding cores, but due to the complicated process, it is easy to lead to unstable consistency, resulting in problems such as short circuit and inflation.

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