Sealing structure of power battery top cap and electrode

A power battery and sealing structure technology, which is applied in the direction of sealing materials, structural parts, battery pack parts, etc., can solve the problems of large shrinkage changes of plastic parts, reduced sealing effect of plastic parts, aging of plastic parts, etc., to improve processing efficiency, The effect of reducing assembly procedures and good sealing effect

Inactive Publication Date: 2015-07-01
SHENZHEN KEDALI IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The plastic parts will be corroded if exposed to the electrolyte for a long time, and its sealing and aging resistance will be greatly reduced, resulting in the aging of the plastic parts and the failure of the seal, resulting in the leakage of the electrolyte inside the battery and causing the battery to fail;
[0006] 2. When the temperature of the working environment fluctuates greatly, the shrinkage of the plastic parts changes greatly, which greatly reduces the sealing effect;
[0007] 3. When the battery is in a violent vibration environment, the sealing effect of the plastic parts is reduced

Method used

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  • Sealing structure of power battery top cap and electrode
  • Sealing structure of power battery top cap and electrode

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the embodiments and with reference to the accompanying drawings.

[0020] For the sealing structure of a power battery top cover and electrodes in this embodiment, please refer to figure 1 , including a top cover substrate 3, on which two electrode holes are respectively used to pass through the positive electrode and the negative electrode 1, the inner space of the electrode hole is larger than the positive electrode or the negative electrode 1 and is connected to the positive electrode Or the negative electrode 1 forms an annular gap, and a glass sealing layer 2 is arranged in the annular gap between the electrode hole and the positive electrode or negative electrode 1, and the glass sealing layer 2 is welded together with the top cover substrate 3, the positive electrode, and the negative electrode . The electrode 1 can be made of copper material or aluminum material or composite mat...

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Abstract

The invention discloses a sealing structure of a power battery top cap and an electrode. The sealing structure comprises a top cap base plate, wherein two electrode holes which are respectively used for a positive electrode and a negative electrode to pass through are formed in the top cap base plate, the inner space of each electrode hole is greater than the positive electrode or the negative electrode, each electrode hole and the positive electrode or the negative electrode form an annular gap, a glass seal layer is arranged in each annular gap between each electrode hole and the positive electrode or the negative electrode, and the glass seal layer is integrally connected with the top cover base plate, the positive electrode and the negative electrode in a fusion manner. The sealing structure has the advantages of corrosion resistance, aging resistance, firmness in seal and stable sealing property.

Description

technical field [0001] The invention relates to battery accessories, in particular to a sealing structure for a top cover and an electrode of a power battery with corrosion resistance, aging resistance, firm sealing and stable sealing performance. Background technique [0002] The power battery is an important part of the new energy battery, and its biggest advantage is high energy and no pollution; it is the development direction of new energy vehicles and energy storage power stations, so the safety performance of the battery is particularly important, and the sealing of the top cover of the power battery is An important guarantee for battery safety. [0003] The sealing of the power battery is one of the important factors that affect the safety and durability of the battery. The leakage and leakage prevention of the top cover electrode of the power battery has always been a technical problem of the power battery. [0004] At this stage, plastic parts are mainly used for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/08H01M2/06H01M50/172H01M50/188H01M50/191
CPCH01M50/186H01M50/191H01M50/183Y02E60/10
Inventor 励建炬
Owner SHENZHEN KEDALI IND CO LTD
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