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A preparation method of electrode pole piece, electrode pole piece and lithium ion battery

A lithium-ion battery and electrode pole piece technology, which is applied in electrode manufacturing, electrode collector coating, electrode forming, etc., can solve the problem that the area occupied by the shedding area cannot be matched with the area required for the positive ear connection

Active Publication Date: 2022-03-18
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] One purpose of this application is to provide a new technical solution for the preparation method of the electrode pole piece, so as to solve the technical problem that the area occupied by the shedding area and the area required for the connection of the tabs in the prior art cannot match each other

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  • A preparation method of electrode pole piece, electrode pole piece and lithium ion battery
  • A preparation method of electrode pole piece, electrode pole piece and lithium ion battery
  • A preparation method of electrode pole piece, electrode pole piece and lithium ion battery

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0032] The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It should be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application can be practiced in sequences other than those illustrated or described herein, and that references to "first," "second," et...

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Abstract

The embodiment of the present application discloses a preparation method of an electrode pole piece, an electrode pole piece and a lithium ion battery. The method includes the following steps: providing a current collector, the current collector is provided with a predetermined area of ​​the tab, and an isolation film is coated on the predetermined area of ​​the tab; coating an active material on the current collector and the isolation film Slurry to form an active material film layer; use a laser to remove the active material film layer and the isolation film arranged in the predetermined area of ​​the tab to form a concave groove; set a tab in the concave groove to form the electrode pole piece.

Description

technical field [0001] The present application relates to the field of battery technology, and more specifically, the present application relates to a preparation method of an electrode pole piece, an electrode pole piece and a lithium ion battery. Background technique [0002] Since the promotion of commercialization, lithium-ion batteries have been widely used as a variety of portable batteries due to their advantages such as high energy density, high working voltage, long cycle life, no memory effect, green environmental protection, and flexible design of size and shape according to actual needs. Power supply for electronic appliances. [0003] In order to improve the utilization rate of the current collector area of ​​the lithium-ion battery, in the prior art, a heat-expandable foaming pressure-sensitive tape is pasted on the current collector, and a high-temperature drying method is used to detach the heat-expandable foaming and active material film layer from the curre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/04H01M4/139H01M10/0525
CPCH01M4/0404H01M4/0433H01M4/139H01M10/0525Y02E60/10
Inventor 姜新军张小勇张剑姚芳
Owner BYD CO LTD