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Cylinder type lithium battery

A lithium battery, cylindrical technology, applied in the field of cylindrical lithium batteries, can solve problems such as safety hazards and battery explosion, and achieve the effects of improving safety, facilitating battery assembly, and light weight

Active Publication Date: 2012-01-25
SHENZHEN BAK POWER BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the heat inside the cylindrical lithium battery is more likely to cause safety hazards, especially when a large current is discharged, it is very easy to cause the battery to explode

Method used

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  • Cylinder type lithium battery
  • Cylinder type lithium battery
  • Cylinder type lithium battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1, refer to figure 1 , image 3 , Figure 4 , a cylindrical lithium battery, comprising a cylinder body 1, a battery unit 2 accommodated inside the cylinder body 1, an upper cover plate 3 and a lower cover plate 4 for sealing the cylinder body 1, and a support is arranged on the axis of the battery unit 2 5. The support 5 is a hollow metal cylinder, the metal cylinder has an axial opening 8, and a plurality of small holes 6 are arranged on the cylinder wall, and the upper end 7 of the support 5 is in a folded shape, and the lower end of the support 5 and the lower cover plate 4 connected as a whole, the lower end of the support 5 can be connected with the lower cover plate 4 by welding; in order to further fix the battery unit 2 in the cylinder 1, the two ends of the battery unit 2 are also provided with insulating gaskets 9 .

Embodiment 2

[0015] Embodiment 2, refer to figure 2 , image 3 , Figure 4 , a cylindrical lithium battery, comprising a cylinder body 1, a battery unit 2 accommodated inside the cylinder body 1, an upper cover plate 3 and a lower cover plate 4 for sealing the cylinder body 1, and a support is arranged on the axis of the battery unit 2 5. The support 5 is a hollow metal cylinder, the metal cylinder has an axial opening 8, and a plurality of small holes 6 are arranged on the cylinder wall, and the upper end 7 of the support 5 is in a folded shape, and the lower end of the support 5 and the lower cover The plate 4 is connected as a whole, and the lower end of the support 5 can be connected with the lower cover plate 4 by welding; in order to further fix the battery unit 2 in the cylinder 1, insulating gaskets are also provided at both ends of the battery unit 2 9.

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Abstract

The invention relates to a cylindrical lithium battery, comprising a cylinder, a battery unit which is arranged inside the cylinder, an upper coverplate and a lower coverplate which are used for sealing the cylinder. The axes of the battery unit are provided with a supporter which is a hollow metal cylinder, which is provided with an axial opening and the wall of which is provided with a plurality of pores; furthermore, the upper end of the supporter is in furling shape; the lower end of the supporter is connected with the lower coverplate into a whole; the lower end of the supporter can be connected with the lower coverplate into a whole by a welding type; in order to fix the battery unit inside the cylinder further, two ends of the battery unit are provided with insulation spacers. Heatconcentrated at the center of the battery with the structure can be transmitted to the lower coverplate betimes, thus having good performance of heat dissipation, high safety of the battery and beingdifficult to explode.

Description

【Technical field】 [0001] The invention relates to the field of lithium batteries, in particular to cylindrical lithium batteries. 【Background technique】 [0002] With the rapid development of the electronics industry and the information industry, people have higher and higher requirements on the power supply of various electrical appliances. Cylindrical lithium-ion batteries are used as high-energy power sources in a variety of mobile devices, such as mobile phones, digital cameras, notebook computers, and portable power tools. [0003] Generally, lithium batteries can be mainly divided into square lithium batteries and cylindrical lithium batteries in terms of their shape. Cylindrical lithium batteries have a smaller surface area to capacity ratio than square lithium batteries, so the heat dissipation effect is much worse than that of square batteries. Therefore, the heat inside the cylindrical lithium battery is more likely to cause safety hazards, especially when the lar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/00H01M6/14H01M10/04H01M10/38H01M10/40H01M10/052H01M50/107H01M50/152
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 王春光任灿卫志远陈保同
Owner SHENZHEN BAK POWER BATTERY CO LTD
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