Disposable 9V lithium battery security device

A safety device and lithium battery technology, applied in battery circuit devices, primary battery use/maintenance, circuit devices, etc., can solve the problems of potential safety hazards and no safety protection, and achieve the effect of high safety and small size

Inactive Publication Date: 2007-09-12
武汉昊诚锂电科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The 9V lithium battery produced in China is composed of three single cells and then put into a plastic case. Because there is no safety protection, there are potential safety hazards

Method used

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  • Disposable 9V lithium battery security device
  • Disposable 9V lithium battery security device

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Embodiment Construction

[0008] The implementation of the disposable 9V lithium battery safety device of the present invention will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation of the present invention, and the advantages of the present invention will become clearer and easier to understand.

[0009] Referring to the accompanying drawings, it can be seen that the safety device of the disposable 9V lithium battery of the present invention is composed of a circuit board, three diodes, a self-recovery thermistor PTC and three batteries, the three single cells are connected in series, and the three diodes are opposite to each other. In series connection, diodes D1, D2, D3 are respectively connected in parallel with each single battery and then connected in series with the self-recovery thermistor PTC, both of the diodes and the self-recovery thermistor PTC are chip electronic components.

[0010] When in use, when the over-discharged or...

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PUM

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Abstract

The invention is a disposable 9V lithium battery safety device, comprising a circuit board, three diodes, a positive temperature co-efficiency (PTC) resistor and three batteries, where the three single batteries are oppositely connected in series and the three diodes are oppositely connected in series, and each diode is separately connected in parallel with a single battery and then connected in series with the PTC resistor. And it eliminates the hidden danger in the existing 9V lithium batteries without safety protection. And it has advantages of small volume, high safety and so on, especially suitable for fume alarms and other products to use.

Description

technical field [0001] The invention relates to a lithium battery safety device, more specifically, it is a disposable 9V lithium battery safety device assembled from three lithium batteries. Background technique [0002] At present, most of the 9V batteries on the market are alkaline batteries or carbon batteries. Although their safety is better, some specific fields cannot be used due to the limitation of technical performance, and smoke alarms are one of them. The 9V lithium battery used in the smoke alarm and other fields is assembled by three 3V lithium batteries in series. In the case of short circuit, over discharge, and forced discharge, lithium batteries may explode, especially batteries assembled in series are more likely to explode. Most of the 9V batteries on the foreign market are produced in the United States. Its structure is an integral battery with a plastic shell. When there is air pressure inside the battery, after the plastic shell is deformed, it will c...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02H7/18H02H5/04H01M6/50
Inventor 阮红林夏青汪峰
Owner 武汉昊诚锂电科技股份有限公司
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