Battery electrode polar column glass sealing-in structure and method

A battery electrode and junction structure technology, which is applied to small-sized batteries/battery packs, structural parts, battery pack parts, etc., can solve the problem that the thermal shock resistance and mechanical shock resistance of sealing glass cannot meet expectations well , Did not consider the mechanical firmness of the electrode pole glass seal assembly, did not explain the thermal expansion coefficient of the components, etc., to achieve the effects of reducing the risk of thermal shock, good weather resistance, and improving electrical insulation and air tightness

Pending Publication Date: 2019-02-01
深圳中傲新瓷科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the main problem of aluminum-aluminum glass sealing is: as the technical standards in the industry become more and more stringent, the thermal shock resistance and mechanical shock resistance of the existing sealing glass can no longer meet expectations.
Many existing domestic utility model patents do not take into account the mechanical firmness of the electrode pole glass sealing assembly, nor explain what kind of sealing glass material to use and how to match the thermal expansion coefficient of each component, resulting in the actual glass sealing Poor feasibility

Method used

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  • Battery electrode polar column glass sealing-in structure and method
  • Battery electrode polar column glass sealing-in structure and method
  • Battery electrode polar column glass sealing-in structure and method

Examples

Experimental program
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Embodiment 1

[0042] Please refer to Fig. 1(a) and Fig. 1(b), a kind of battery electrode pole glass sealing structure, it includes electrode base and electrode aluminum stem 11, above the electrode base, electrode aluminum stem 11 The lower glass gasket 40, the battery cover plate 20, the upper glass gasket 50, the gasket fixing piece 60, the fixing ring 70 and the solder ring 80 are set sequentially from bottom to top; wherein, the glass lower gasket 40, the battery cover plate 20 and the There is an annular gap with the same diameter between the glass upper gasket 50 and the electrode aluminum stem 11; the annular gap is filled with aluminum sealing glass 30 and the glass lower gasket 40 and the glass upper gasket 50 are thermally connected to the aluminum sealing glass 30; Both the fixing piece 60 and the fixing ring 70 are in close contact with the electrode aluminum stem 11 ; the solder ring 80 welds the fixing ring 70 and the electrode aluminum stem 11 . Wherein, the electrode base i...

Embodiment 2

[0064] This embodiment is similar to the embodiment with minor differences, please refer to Fig. 2 (a) and Fig. 2 (b), in the present embodiment, electrode copper coin quality base 10-3 is replaced by composite process such as friction welding that battery negative electrode needs Copper plate, its coefficient of thermal expansion is about 17.6x10 -6 / ℃, much smaller than the thermal expansion coefficient of aluminum or aluminum alloy. In order to better reduce the interface thermal stress, it is best to use newly adjusted low-temperature copper sealing glass 30-1, such as phosphate glass copper sealing glass 30-1 resistant to electrolyte corrosion, whose thermal expansion coefficient is between that of copper and that of the lower gasket 40, while the thermal expansion coefficient of the lower gasket 40 is slightly lower than that of the aluminum cover plate. The problem is how to introduce the copper-sealed glass 30-1 into the lower gasket 40. If it is too thin (2mm), the l...

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Abstract

The invention discloses a battery electrode polar column glass sealing-in structure and method. The sealing-in structure comprises a glass lower washer, a battery cover plate, a glass upper washer, awasher fixing plate, a fixing ring and a solder ring which successively sleeve an electrode aluminum core column; and an annular gap is formed between each of the glass lower washer, the battery coverplate and the glass upper washer and the electrode aluminum core column, the diameters of the annular gaps are equal to one another approximately, and each annular gap is filled with sealing-in glass. An operation method comprises the following steps: assembling the sealing-in structure, then pre-oxidizing the sealing-in structure in an air or oxidizing atmosphere at the temperature lower than 350 DEG C, heating under an atmosphere protection condition, maintaining the temperature in a temperature zone of 350-600 DEG C, and completing sealing-in within one hour. Glass can be phosphate glass or silicotitanate glass. The invention further provides a specific formula. The battery electrode polar column glass sealing-in structure has good heat shock resistance and mechanical impact resistance, a sealing-in operation is finished at a time, and the battery electrode polar column glass sealing-in structure is simple and efficient.

Description

technical field [0001] The invention relates to a glass sealing structure for a battery electrode pole, which belongs to the technical field of battery electrode sealing, and in particular to a glass sealing structure for a battery electrode pole and a sealing method thereof. Background technique [0002] A battery refers to a device that contains electrodes, a diaphragm, and an electrolyte solution that can convert chemical energy into electrical energy, and has a positive pole and a negative pole. The performance parameters of the battery mainly include electromotive force, capacity, specific energy and resistance. Using the battery as the energy source can obtain stable voltage, stable current, stable power supply for a long time, and current that is less affected by the outside world. The battery is simple in structure, easy to carry, easy to charge and discharge, not affected by external climate and temperature, stable and reliable in performance, and plays an importan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/30H01M50/564
CPCH01M50/543Y02E60/10
Inventor 缪锡根申亮潘华路周小鹏何纪生缪波
Owner 深圳中傲新瓷科技有限公司
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