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Electrode assembly and electronic device

An electrode assembly and pole piece technology, applied in the field of electrode assemblies and electronic devices, can solve the problems of rapid capacity decay and the like

Pending Publication Date: 2021-11-26
NINGDE AMPEREX TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above situation, it is necessary to provide an electrode assembly and an electronic device to solve the problem of rapid capacity decay caused by electrolyte consumption after a long cycle of the cell

Method used

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  • Electrode assembly and electronic device
  • Electrode assembly and electronic device
  • Electrode assembly and electronic device

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Embodiment Construction

[0065] The technical solutions in the embodiments of the present application are described clearly and in detail below, obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used in the description of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application.

[0066] Hereinafter, embodiments of the present application will be described in detail. This application may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and detailed to those skilled in t...

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Abstract

The invention provides an electrode assembly and an electronic device, the electrode assembly comprises a first pole piece, a second pole piece and a first layer containing an insulating material, the first layer is clamped between the first pole piece and the second pole piece, and after the first pole piece, the second pole piece and the first layer are stacked, the first pole piece, the second pole piece and the first layer are partially folded back to form the electrode assembly; the first pole piece comprises a first surface and a second surface which are opposite to each other and are connected with each other, and the first surface and the second surface are formed by inflection and take inflection points of the inflection as boundaries; a distance is formed between the first surface and the second surface in the first direction; the distances are different in the second direction perpendicular to the first direction; according to the electrode assembly, the cavity is formed in the corner of the first pole piece, so that the actual liquid retention capacity of the battery cell can be improved, the condition of a circulating interface is improved, and the service life of the battery cell is prolonged; the structure is simple and reliable, and economic efficiency of the battery is improved.

Description

technical field [0001] The application relates to an electrode assembly and an electronic device. Background technique [0002] With the development of lithium battery research, the development direction of lithium ion batteries is moving towards the direction of large capacity, high voltage, and long cycle, and then the electrolyte consumption of batteries has gradually become a research hotspot. Existing battery technology decays rapidly after a long cycle (500 charge-discharge cycles and above), partly due to the fact that the electrolyte is basically exhausted at the end of the cycle. Contents of the invention [0003] In view of the above situation, it is necessary to provide an electrode assembly and an electronic device to solve the problem of rapid capacity fading caused by electrolyte consumption of the battery cell after a long cycle. [0004] An embodiment of the present application provides an electrode assembly, including a first pole piece, a second pole pie...

Claims

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Application Information

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IPC IPC(8): H01M10/0525H01M10/0587
CPCH01M10/0525H01M10/0587Y02E60/10Y02P70/50H01M10/0583H01M10/0431H01M10/0585H01M50/533H01M10/0436H01M10/052H01M4/70H01M10/04H01M50/531H01M4/13H01M50/538
Inventor 董宇洋闫东阳曾巧
Owner NINGDE AMPEREX TECH
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