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Primary lithium manganese ultrathin battery and method for preparing same

An ultra-thin, lithium-manganese technology, applied in the field of primary lithium-manganese batteries, can solve the problems of product technology monopoly, inability to apply batch supply, inability to accurately locate and package molding, etc., to solve the problems of easy deviation and rapid introduction of mass production Simple, square and smooth appearance

Pending Publication Date: 2019-06-25
武汉昊诚锂电科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, only a few companies in Europe, America and Japan can supply and produce ultra-thin batteries in batches, and the products are severely restricted by overseas technology monopoly. The technical difficulty lies in the fact that the positive and negative electrodes, diaphragm, aluminum-plastic film and other materials cannot be accurately positioned and packaged during the assembly process of the battery. , the domestic limited ultra-thin battery technology and patents can only realize sample production in the laboratory, and cannot be applied to mass supply

Method used

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  • Primary lithium manganese ultrathin battery and method for preparing same
  • Primary lithium manganese ultrathin battery and method for preparing same
  • Primary lithium manganese ultrathin battery and method for preparing same

Examples

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Embodiment 1

[0065] The method for preparing primary lithium manganese ultra-thin CP042043 flexible packaging battery includes the following steps:

[0066] Step 1: The cathode material such as manganese dioxide is made into a slurry and coated on one side of the substrate surface of the battery positive electrode 1 (the positive electrode coating slurry is the prior art). The battery positive electrode 1 uses a single-sided coating process. The base material is made of aluminum foil or stainless steel foil with a thickness of 10 μm to 15 μm, and the thickness of the positive electrode sheet after rolling is 150 μm;

[0067] Step 2: Use a laser machine to clean the positive electrode 1 and leave a small blank area 1.3. After the positive electrode 1 is dried and dewatered, weld the stainless steel positive electrode tab 1.1 to the metal foil in the blank area 1.3 of the positive electrode sheet;

[0068] Step 3: Purchase an ultra-thin lithium belt (purchased from: Tianjin Zhongneng Lithium Co., L...

Embodiment 2

[0076] Method for preparing primary lithium manganese ultra-thin CP042043 flexible packaging battery; its preparation method is the same as that in Example 1, except that the thickness of the positive electrode after rolling is 120 μm, and the depth of the positive electrode pit 3.1 is 120 μm; the battery negative electrode is purchased from Tianjin The thickness of the ultra-thin lithium belt is 50μm, the depth of the negative pit 3.2 is 50μm; the welding temperature is 180°C, and the welding time is 6s.

Embodiment 3

[0078] Method for preparing primary lithium manganese ultra-thin CP042043 flexible packaging battery; its preparation method is the same as in Example 1, except that: the thickness of the positive electrode after rolling is 130μm, the depth of the positive electrode pit 3.1 is 130μm; the battery negative electrode is purchased from Tianjin The thickness of the ultra-thin lithium belt is 70μm, the depth of the negative electrode pit 3.2 is 70μm; the welding temperature is 220℃, and the welding time is 3s.

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Abstract

The invention discloses a primary lithium manganese ultrathin battery comprising a positive electrode, a negative electrode and an aluminum plastic film. A positive electrode pit and a negative electrode pit are symmetrically disposed on the inner surface of the aluminum plastic film. The positive electrode is located in the positive electrode pit, and the negative electrode is located in the negative electrode pit. The surface of the positive electrode is coated with conductive paste. A diaphragm is attached to the outer surface of the positive electrode. The conductive paste is located between the positive electrode and the diaphragm. The primary lithium manganese ultrathin battery is rapid and simple to mass produce and ultrathin. The invention also discloses a method for preparing theprimary lithium manganese ultrathin battery.

Description

Technical field [0001] The invention relates to the field of primary lithium manganese batteries, more specifically it is a primary lithium manganese ultra-thin battery. The invention also relates to a method for preparing primary lithium manganese ultra-thin batteries. Background technique [0002] The vigorous development of the Internet of Things technology has promoted the emergence of new primary lithium manganese battery applications such as smart bank cards, room cards, and smart wearable devices. Thin batteries, especially ultra-thin batteries with a thickness of less than 0.5mm, have gradually become primary lithium batteries. In important branch areas, ultra-thin batteries have also become new technological products being developed by many domestic lithium battery factories. [0003] At present, only a few companies in Europe, America and Japan can supply and produce ultra-thin batteries in batches. The products are severely controlled by overseas technology monopoly. Th...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M6/14H01M6/00
Inventor 周敬于力阮红林
Owner 武汉昊诚锂电科技股份有限公司