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Lithium ion battery electrode, lithium ion battery and lithium ion battery preparation method

A lithium-ion battery and electrode technology, applied in the field of lithium-ion batteries and lithium-ion battery preparation, lithium-ion battery electrodes, can solve the problems of battery AC internal resistance increase, etc., achieve small AC internal resistance, high-rate discharge, and good cycle life Effect

Inactive Publication Date: 2018-11-23
SHANDONG PENGXIANG PHOTOELECTRIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the negative tab is located on one side, which will cause the AC internal resistance of the entire battery to rise

Method used

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  • Lithium ion battery electrode, lithium ion battery and lithium ion battery preparation method
  • Lithium ion battery electrode, lithium ion battery and lithium ion battery preparation method
  • Lithium ion battery electrode, lithium ion battery and lithium ion battery preparation method

Examples

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] This example involves a high-rate cylindrical lithium-ion rechargeable battery with a negative middle tab. Height 65.3mm, diameter 18.3mm.

[0034] Such as figure 1 As shown, the positive pole of the lithium ion battery includes the positive pole piece 1 and the aluminum tab 3 drawn out, as figure 2 The negative electrode of the shown lithium ion battery includes a negative pole piece 4 and a drawn nickel tab 5, and the lithium ion rechargeable battery also includes a separator, an organic electrolyte and a battery case. The positive electrode sheet 1 includes a current collector and a positive electrode material coated thereon, and the negative electrode sheet 4 includes a current collector and a negative electrode material coated thereon.

[0035] The positive electrode material includes a high-capacity nickel-cobalt-manganese oxide powder,...

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Abstract

The invention discloses a lithium ion battery electrode, a lithium ion battery and a lithium ion battery preparation method. The lithium ion battery electrode comprises an anode and a cathode, the cathode comprises a cathode piece and a cathode lug, the cathode lug is arranged at a middle position of the cathode piece, the cathode piece comprises a current collector and a cathode substance coatedon the current collector; the anode comprises an anode piece and an anode lug, the anode lug is arranged at a middle position of the anode piece, the anode piece comprises a current collector and an anode substance coated on the current collector, isolated layers are arranged positions, corresponding to the cathode lug, on the front and the back of the anode piece, and deintercalation of lithium ions in the anode substance is blocked. The lithium ion battery electrode disclosed by the invention has the advantages that the cathode lug is arranged at the middle position, and the isolated layersare arranged at corresponding positions of the anode piece, thereby guaranteeing that no anode substance exists at a corresponding position of the cathode plug and reducing internal resistance while safety of a lithium battery is guaranteed, and high-rate discharge can be realized more easily.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a lithium ion battery electrode, a lithium ion battery and a preparation method for the lithium ion battery. Background technique [0002] Lithium-ion battery is a secondary battery (rechargeable battery) that mainly relies on lithium ions to move between positive and negative electrodes to work. During the charging and discharging process, Li + Intercalation and deintercalation back and forth between two electrodes: when charged, Li + It is deintercalated from the positive electrode, inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge. Batteries generally use materials containing lithium elements as electrodes, which are representatives of modern high-performance batteries. [0003] In the internal structure of the existing lithium-ion battery, the negative ele...

Claims

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Application Information

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IPC IPC(8): H01M4/02H01M4/04H01M4/131H01M4/133H01M4/1391H01M4/1393H01M10/0525H01M10/0587
CPCH01M4/02H01M4/04H01M4/131H01M4/133H01M4/1391H01M4/1393H01M10/0525H01M10/0587Y02E60/10Y02P70/50
Inventor 冯强孙猛李文康董业鹏
Owner SHANDONG PENGXIANG PHOTOELECTRIC TECH
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