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Metal lithium battery

A metal lithium and battery technology, applied in the field of metal lithium batteries, can solve problems such as contact short circuit of positive pole pieces, and achieve the effect of efficient assembly and production

Active Publication Date: 2016-11-23
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of assembling the battery first and then processing the lithium metal tab, to ensure good electrical connection, it will inevitably face the problem that the lithium metal negative electrode or the negative electrode tab is easily contacted with the positive pole piece.

Method used

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Embodiment Construction

[0027] The metal lithium battery according to the present invention will be described in detail below with reference to the drawings.

[0028] Reference Figure 1 to Figure 10 The metal lithium battery according to the present invention includes: a battery cell 1, a positive electrode tab 2, a negative electrode tab 3, and an electronic insulation coating 4. The cell 1 includes: a positive pole piece 11, including a positive electrode current collector 111 and a positive electrode active material layer 112 disposed on the surface of the positive electrode current collector 111; a negative pole piece 12, which is made of a metal lithium film; and a separator 13 located on the positive electrode. Between the sheet 11 and the negative pole piece 12; among them, the positive pole piece 11, the separator 13, the negative pole piece 12 are laminated in sequence (refer to Figure 6 to Figure 10 ), winding, or lamination and winding to form the battery core 1, and the positive pole piece ...

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Abstract

The invention provides a metal lithium battery. The metal lithium battery comprises a battery cell, a positive electrode tab and a negative electrode tab, wherein the battery cell comprises a positive pole plate, a negative pole plate and a separator membrane, the positive pole plate comprises a positive current collector and a positive active material layer, the positive active material layer is arranged on a surface of the positive current collector, the material of the negative pole plate is a metal lithium thin film, the separator membrane is arranged between the positive pole plate and the negative pole plate, the positive pole plate, the separator membrane and the negative pole plate are sequentially laminated, wound or laminated and wound to form the battery cell, the positive pole plate, the separator membrane and the negative pole plate which are sequentially laminated or wound are in close contact without a gap, the positive electrode tab is arranged at one side of the battery cell and is electrically connected to the positive current collector of the positive pole plate, the negative electrode tab is arranged at one side of the battery cell, is formed integratedly with the negative pole plate and protrudes out of the negative pole plate, the metal lithium battery also comprises an electronic insulation coating layer, the electronic insulation coating layer covers one side, at the negative electrode tab, of the positive pole plate, so that the side, at the negative electrode tab, of the positive pole plate, is in electric insulation.

Description

Technical field [0001] The invention relates to the field of energy storage devices, in particular to a metal lithium battery. Background technique [0002] Metal lithium secondary batteries using lithium metal as the negative electrode are a major direction for the development of high-energy density lithium secondary batteries. Because the metal lithium is soft, the film strength is very poor, and it is easy to deform, break and break, so the operation of using a single metal lithium negative electrode to lead the tab requires great care. On the one hand, the negative electrode tab is easy to fall off or disconnect from the lithium metal sheet when it is shaken or dropped. On the other hand, the metal lithium tab is easily deformed and short-circuited with the positive electrode tab when it is squeezed or impacted. Therefore, how to prevent the short circuit between the lithium metal negative electrode tabs and the positive electrode and how to prevent the negative electrode ta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/26H01M2/34H01M10/052H01M50/533H01M50/583
CPCH01M10/052H01M50/54H01M50/597Y02E60/10
Inventor 江德顺吴冰斌
Owner CONTEMPORARY AMPEREX TECH CO
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