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Lithium primary battery negative electrode structure and lithium primary battery

A battery negative electrode and lithium negative electrode technology, which is applied to the electrodes of primary batteries, primary batteries, circuits, etc., can solve the problems of sudden termination of discharge, easy breakage of the connection between the negative electrode sheet and the tab, etc.

Active Publication Date: 2020-12-11
珠海市冠力电池有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the purposes of the present invention is to provide a negative electrode structure of a lithium primary battery to improve the technical problem that the negative electrode structure of the existing lithium primary battery is prone to breakage at the junction of the negative electrode sheet and the tab during the discharge process, resulting in a sudden termination of the discharge.

Method used

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  • Lithium primary battery negative electrode structure and lithium primary battery
  • Lithium primary battery negative electrode structure and lithium primary battery
  • Lithium primary battery negative electrode structure and lithium primary battery

Examples

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Embodiment 1

[0065] This embodiment provides a lithium-iron battery, the structure of its negative electrode is as follows figure 1 As shown, the negative electrode structure includes a lithium negative electrode sheet 101, a crimping area is provided on the lithium negative electrode sheet 101, a lithium ribbon 103 is crimped in the crimping area, and a tab 102 is crimped between the lithium negative electrode sheet 101 and the lithium ribbon 103, Wherein, the lithium ribbon 103 is all crimped on the lithium negative electrode sheet 101 .

[0066] In this embodiment, the outer diameter of the lithium-iron battery is 14 mm, the length of the lithium negative plate 101 is 200 mm, the width is 39 mm, and the thickness is 0.24 mm. The width of the tab 102 is 3.5 mm, and the length of the tab 102 is 40 mm. The length of the ribbon 103 is 10.99 mm, the width is 9.75 mm, and the thickness is 0.08 mm. The length of the crimping area is the length of the lithium ribbon 103 .

Embodiment 2

[0068] This embodiment provides a lithium-iron battery, the negative electrode structure of which is the same as the negative electrode structure of the lithium-iron battery provided in Example 1, the difference lies in the length, width and thickness of the lithium strip, wherein the length of the lithium strip is 65.94mm, The width is 39mm and the thickness is 0.12mm.

Embodiment 3

[0070] This embodiment provides a lithium-iron battery, the negative electrode structure of which is the same as that of the provided lithium-iron battery negative electrode, the difference lies in the length, width and thickness of the lithium strip, wherein the length of the lithium strip is 30 mm, and the width is 20 mm. The thickness is 0.1mm.

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Abstract

The invention provides a cathode structure of a primary lithium battery and the primary lithium battery and relates to the technical field of primary lithium batteries. The cathode structure of the primary lithium battery comprises a lithium cathode piece which is provided with a crimping region. A lithium strip is crimped in the crimping region. A lug is crimped between the lithium cathode pieceand the lithium strip. The technical problem that the lithium cathode piece of an existing cathode structure is easy to break in the later discharge period is alleviated. According to the cathode structure of the primary lithium battery, the lithium strip is crimped in the crimping region and the lug is located between the lithium cathode piece and the lithium strip, so that the crimped region ofthe lithium strip and the lithium cathode piece is thickened locally; the connection of the lithium cathode piece and the lug can be prevented from being broken in the later discharge period of the battery effectively, so that capacity development and discharge stability of the primary lithium battery can be improved effectively.

Description

technical field [0001] The invention relates to the technical field of lithium primary batteries, in particular to a lithium primary battery negative electrode structure and a lithium primary battery. Background technique [0002] Lithium primary battery is a high-energy chemical primary battery, commonly known as lithium primary battery, which uses lithium metal as the negative electrode, solid salts or salts dissolved in organic solvents as the electrolyte, and metal oxides or other solid or liquid oxidants as positive active materials. , is the general term for a series of chemical power sources that use metallic lithium as the negative electrode material. [0003] However, using lithium metal as the negative electrode of the battery will be accompanied by a common problem, that is, as the battery discharges, the chemical reaction inside the battery continues, and the negative electrode metal is consumed less and less until it is completely consumed. However, during the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/06H01M6/00
CPCH01M4/06H01M6/00
Inventor 郭镖薛建军薛江丽王恋杨光夏信德徐玉勇
Owner 珠海市冠力电池有限公司