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Positive plate, battery roll core, battery and preparation method of positive plate

A positive electrode sheet and battery technology, applied in battery electrodes, non-aqueous electrolyte battery electrodes, secondary batteries, etc., can solve the problem of current collectors being prone to tearing and other problems

Active Publication Date: 2021-04-16
ZHUHAI COSMX BATTERY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide a positive electrode sheet, battery core, battery and positive electrode sheet preparation method, which can solve the problem that the current collector of the battery is prone to tearing in the related art

Method used

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  • Positive plate, battery roll core, battery and preparation method of positive plate
  • Positive plate, battery roll core, battery and preparation method of positive plate
  • Positive plate, battery roll core, battery and preparation method of positive plate

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Embodiment Construction

[0030]The embodiments of the present application will be described in detail below, and examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are indicated by the same or similar elements or elements having the same or similar functions. The following is exemplary, and is intended to explain the present application by referring to the embodiments described with reference to the accompanying drawings. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative labor, are the scope of the present application.

[0031]In the description of this application, it is to be described in that, unless otherwise expressly specified and defined, the term "mount", "connected", "connection" should be broadly understood, for example, can be fixed, or detachable Connect, or integrate; it can be mechanical connection, or electrical connection; may be directly connected, or indir...

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Abstract

The invention discloses a positive plate, a battery roll core, a battery and a positive plate preparation method. The positive plate comprises a current collector, a tab, an active material layer and a mixed layer; the current collector comprises a first surface and a second surface which are oppositely arranged, the first surface comprises a first area, a second area and a third area, and the second surface comprises a fourth area and a fifth area; the fourth area is arranged corresponding to the second area, and the fifth area is arranged corresponding to the third area; the first region is provided with a tab electrically connected with the current collector, the second region and the fourth region are respectively provided with an active material layer, and the third region and the fifth region are respectively provided with a mixed layer; and the mixed layer is an elastic mixed solvent layer. Therefore, under the condition that the positive plate falls off or other machines are abused, the tearing phenomenon of the current collector can be reduced.

Description

Technical field[0001]The present application belongs to the technical field of battery, and more particularly to a positive electrode sheet, a battery core, a battery, and a positive electrode preparation method.Background technique[0002]As the user's demand for battery life is increased, the capacity of the battery is getting bigger and bigger. However, as the capacity of the battery increases, when the battery collides or falls, the force of the internal structure of the battery is also large, and it is easily caused by tearing of the current collector of the battery; and collecting fluid tear Burning is easy to stamp the diaphragm, which can cause the positive electrode sheet and negative surface short circuit inside the battery, resulting in a safe hidden danger of the battery.[0003]It can be seen that in the related art, the current collector of the battery is prone to tear problems.Inventive content[0004]The present application is intended to provide a positive electrode sheet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/13H01M4/139H01M10/0525H01M10/0587
CPCY02E60/10Y02P70/50
Inventor 李根宗彭冲
Owner ZHUHAI COSMX BATTERY CO LTD
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