Full-sealed anti-corrosion integrated welded lithium ion battery

A lithium-ion battery, fully sealed technology, applied in the field of lithium-ion batteries, can solve the problems of low insulation resistance of the shell, large internal resistance of threaded connections, and increased battery height, so as to increase insulation resistance, prolong service life, and reduce internal resistance. The effect of resistance

Inactive Publication Date: 2012-10-17
SHANGHAI AEROSPACE POWER TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The patents listed above are mainly aimed at the sealing of the battery poles, and do not involve the full sealing of the inside of the battery. For lithium-ion batteries with metal shells, there is still a potential safety hazard of low insulation resistance of the shell, and due to the use of pole threaded connections The height of the battery is increased, which may cause the defects of high internal resistance and poor circulation of the threaded connection

Method used

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  • Full-sealed anti-corrosion integrated welded lithium ion battery
  • Full-sealed anti-corrosion integrated welded lithium ion battery
  • Full-sealed anti-corrosion integrated welded lithium ion battery

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Embodiment Construction

[0032] The following combination Figure 1 to Figure 10 , a preferred embodiment of the present invention is described in detail.

[0033] Such as figure 1As shown, it is a structural schematic diagram of a fully sealed and corrosion-resistant welded integrated lithium-ion battery provided by the present invention. The lithium-ion battery comprises: a battery cell; a fully sealed cover plate 1, which is arranged on the top of the battery cell and connected to the battery cell; a fully sealed bushing 2, which has a top opening, and the battery cell is formed by the The top opening is inserted into the fully sealed bush 2, that is, the fully sealed bush 2 completely covers the bottom and surroundings of the cell (see Figure 9 ); housing 9, which has a top opening, and the battery core covered with fully sealed bushing 2 is inserted into the housing 9 through the top opening, and the housing 9 and the fully sealed cover The boards are connected by soldering.

[0034] Such as...

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Abstract

The invention relates to a full-sealed anti-corrosion integrated welded lithium ion battery, comprising a battery core, a full-sealed cover plate, a full-sealed bush and a shell, wherein the full-sealed cover plate is arranged at the top of the battery core and is connected with the battery core; the full-sealed liner is provided with a top opening; the battery core is sleeved into the full-sealed bush from the top opening, namely, the full-sealed bush completely covers the bottom and the periphery of the battery core; the shell is provided with a top opening; the battery core covered by the full-sealed liner is sleeved into the shell from the top opening of the shell; and the shell is connected with the full-sealed cover plate through welding. According to the full-sealed anti-corrosion integrated welded lithium ion battery, the full sealing of the inner part of the battery is realized, so that electrolyte cannot be contacted with the shell or the cover plate in a liquid injection process; and therefore, the insulation resistance of the shell is enhanced and the safety of the battery is improved.

Description

technical field [0001] The invention relates to a lithium ion battery, in particular to a fully sealed and corrosion-resistant welded integrated lithium ion battery, which belongs to the technical field of lithium ion batteries. Background technique [0002] The power battery pack system often involves a voltage of several hundred volts, so each single battery needs to be insulated from each other during assembly to avoid potential safety hazards caused by high voltage directly loaded between the pole and the shell. Because there is a free electrolyte between the pole and the shell, high voltage loading on the shell will cause the electrolyte to be ionized, causing the electrolyte to decompose and generate gas, causing the battery to swell, and in severe cases, an instantaneous arc breakdown will cause a fire and explosion Danger. However, the insulation treatment process of metal shell battery cells is complicated, the cost is high, and there is a risk of failure. Therefor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M2/08H01M2/26H01M2/12H01M2/36H01M50/169H01M50/184H01M50/188H01M50/193H01M50/198
CPCH01M2/0434Y02E60/122H01M2/04H01M2/08Y02E60/10H01M50/184H01M50/193H01M50/198H01M50/169H01M50/188
Inventor 赵文鹏曹辉侯敏刘思王东
Owner SHANGHAI AEROSPACE POWER TECH
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