VO2 온도센서를 이용한 전원차단 PCM 구성
Built-in protection circuit module by using VO₂temperature sensors
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초록
Most portable mobile devices employ rechargeable lithium-ion batteries. This lithium-ion battery usually suffers from the possibility of explosion due to heat generation from surrounding atmosphere or internal deficiency during charging or at overuse. To solve these problems, most rechargeable batteries have a built-in protection circuit module (PCM). The resistance of a properly processed VO2 critical temperature sensor (CTS) is changed dramatically at a critical temperature of around 68 ℃, which can replace some bi-metal, NTC, or PTC sensors embedded in PCM. Such VO2 CTS consumes a very small current at the level of natural discharge. Experimental results showed that this CTS could be applied to a PCM as the PCM could protect the battery while keeping its power consumption at minimum.
Abstract
Most portable mobile devices employ rechargeable lithium-ion batteries. This lithium-ion battery usually suffers from the possibility of explosion due to heat generation from surrounding atmosphere or internal deficiency during charging or at overuse. To solve these problems, most rechargeable batteries have a built-in protection circuit module (PCM). The resistance of a properly processed VO2 critical temperature sensor (CTS) is changed dramatically at a critical temperature of around 68 ℃, which can replace some bi-metal, NTC, or PTC sensors embedded in PCM. Such VO2 CTS consumes a very small current at the level of natural discharge. Experimental results showed that this CTS could be applied to a PCM as the PCM could protect the battery while keeping its power consumption at minimum.
참고문헌 (8)
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