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Processing method of disposable lithium battery tantalum electrode glass integral cover

A processing method and technology of lithium batteries, which are applied to battery components, circuits, electrical components, etc., can solve problems such as low voltage, inability to realize production, failure to achieve sealing, insulation, voltage drop, temperature cycle technical performance indicators, etc.

Active Publication Date: 2014-12-03
中国电子科技集团公司第四十研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Using the existing production process to manufacture disposable lithium battery tantalum electrode glass integrated caps often has the following problems: 1. The number of bending times of the U-shaped tantalum electrode cannot meet the requirements, and the lithium battery is easily brittle during the assembly production process. The average bending time is 1.5 brittle breaks, and production cannot be realized; 2. There is a layer of nickel plating on the surface of the tantalum electrode of the cap, which will change the electrochemical characteristics of the battery in use, that is, change the electrical characteristics of the lithium battery; 3. The electrical characteristics of the lithium battery Unstable, low voltage, design requirement is 3.2±0.3V, average 2.9~3.0V; 4. Insulation resistance ≥1000MΩ
Due to the existence of the above problems, the final disposable lithium battery tantalum electrode glass integrated cap cannot meet the technical performance indicators required by the battery such as sealing, insulation, voltage drop, and temperature cycle, and the reliability indicators of the battery cannot be guaranteed: The failure rate of battery leakage after eight years of storage is less than 2 / 10,000

Method used

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  • Processing method of disposable lithium battery tantalum electrode glass integral cover
  • Processing method of disposable lithium battery tantalum electrode glass integral cover

Examples

Experimental program
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Embodiment 1

[0046] The processing method of the glass integrated cap of the tantalum electrode of the disposable lithium battery, see figure 2 The glass integrated cap of the tantalum electrode of the disposable lithium battery includes a tantalum electrode 1, a glass body 2, and a casing 3. The casing 3 is a hollow stepped shaft, and the tantalum electrode 1 is a folded U-shaped bend after flattening, which is not U-shaped. The shaped part is inserted into the inner hole of the housing 3, and a glass body 2 is arranged between the housing 3 and the radial direction of the tantalum electrode 1; the specific steps of the processing method of the glass-integrated cap of the disposable lithium battery tantalum electrode are as follows: :

[0047] (1) Process shell 3: punch DC06 cold-rolled carbon steel into a base plate, then polish and anneal the base plate to obtain shell 3;

[0048] The finishing treatment of the bottom plate is carried out on a roller burnishing machine, using round al...

Embodiment 2

[0061] The processing method of the glass integrated cap of the tantalum electrode of the disposable lithium battery, see figure 2 The glass integrated cap of the tantalum electrode of the disposable lithium battery includes a tantalum electrode 1, a glass body 2, and a casing 3. The casing 3 is a hollow stepped shaft, and the tantalum electrode 1 is a folded U-shaped bend after flattening, which is not U-shaped. The shaped part is inserted into the inner hole of the housing 3, and a glass body 2 is arranged between the housing 3 and the radial direction of the tantalum electrode 1; the specific steps of the processing method of the glass-integrated cap of the disposable lithium battery tantalum electrode are as follows: :

[0062] (1) Processing shell 3: stamping 316L stainless steel into a bottom plate, and then polishing and annealing the bottom plate to obtain shell 3;

[0063] The polishing treatment of the bottom plate is carried out on a roller burnishing machine, usi...

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Abstract

The invention relates to a processing method of a disposable lithium battery tantalum electrode glass integral cover. The disposable lithium battery tantalum electrode glass integral cover comprises a tantalum electrode, a glass body and a housing; and the processing method comprises the specific methods as follows: (1) processing housing: punching a board to form a bottom plate, finishing the bottom plate, and annealing to obtain the housing; (2) processing the tantalum electrode: flattening and bending the tantalum electrode, and then finishing and annealing; (3) processing the glass body: mixing and agitating glass powder, preparing into a blank, de-waxing, and vitrifying to obtain a glass blank; and (4) assembling: assembling the housing, the tantalum electrode and the glass body on a die, and transferring into a sintering furnace to be sintered. The disposable lithium battery tantalum electrode glass integral cover by the processing method provided by the invention has high sealing performance, and the U-shaped tantalum electrode has low probability of fracture; and after being used, the disposable tantalum electrode glass integral cover of the lithium battery can meet the requirement on low leakage failure rate of the battery.

Description

technical field [0001] The invention relates to a processing method for a disposable lithium battery tantalum electrode glass integrated cap. Background technique [0002] Lithium batteries are a new type of military and civilian energy devices that have been widely used in recent years. They are mainly used in aerospace, aviation, navigation, electronic automation control and other fields to provide power for control systems. The application prospects are very broad. The primary lithium battery cap is a metal-glass insulating and sealed shell, which is mainly used for new ultra-small and ultra-large capacity primary lithium batteries. The primary lithium batteries are mainly used in military equipment control systems, electronic instruments, energy equipment and other fields. The control power supply provides energy. It is widely used in spacecraft, aviation, communication, electronics, marine transportation, etc., and is an urgently needed key component of new ultra-small...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/30
CPCY02E60/10
Inventor 杨俊钊刘燕刘彬蒙高安
Owner 中国电子科技集团公司第四十研究所