低功耗能量擷取與儲存之太陽能電池應用

Indoor Energy Harvesting Using Photovoltaic Cell for Battery Recharging

麻師豪(Chinet Otic Mocorro)

指導教授 ： 黃弘一博士

國立臺北大學/電機資訊學院/電機工程研究所/碩士(2012年)

摘要

本研究提出一個晶片內部能源收集系統與可充電式電池，使用於室內超低功率能源收集之應用，此電路採用充電式電池，可取代一般鹼性電池要定期更換的缺點和多餘的花費，並且當能源中斷時，還能持續提供設備與機器持續運作，達到設備延長使用的功能。

系统的输入电压为500mV，这是根据在典型的输出电压的1个单位的光伏电池，延續現今科技與技術進步的趨勢，縮小晶片面積為節省成本的方式之一，本晶片能源收集系統沒有使用額外電感和電容的被動元件，本電路系統沒有使用電感與直流-直流轉換器，目的是為了使電路控制系統簡單化和避免昂貴的製作過程，測試晶片以台積電0.18um 1P6M標準製程實現，晶片面積為0.962×0.935 mm2，功率消耗在提供負載電流395uA、1.3V(513.5uW)時，總功率消耗為1.25mW.

關鍵字

室內能源收集 ； 太陽能電池 ； 室內太陽能 ； 電池充電

並列摘要

This paper presents light energy harvesting system with rechargeable battery used for ultra-low power devices in an indoor application. The rechargeable battery serves as a back-up supply to provide power to the load when the light source is out thereby extending the device performance to almost indefinite period. It eliminates the use of alkaline (primary) batteries that requires a regular replacement from time to time.
The input voltage of the system is 500mV which is based in the typical output voltage of a 1 unit photovoltaic cell. The system does not use a dc to dc converter in boosting an output voltage to avoid complicated control algorithm and the costly implementation of inductor on the chip. This output voltage is regulated and used as a charging voltage the battery and supply voltage to the load. This work operates at room lighting illumination of 2337.93 lux which is commonly found in an industry and hospital environment. The circuit occupies a chip area of 0.962×0.935 mm2 and is fabricated using 0.18μm 1P6M process with a power dissipation of 1.25mW when delivering a load current of 395μA at 1.3V

並列關鍵字

indoor energy harvesting ； indoor solar cell ； battery charging

參考文獻

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