Low-voltage WOx gated indium-zinc-oxide thin-film transistors(TFTs)with in-plane-gate structures are fabricated by using an extremely simplified one-shadow mask method at room temperature.The proton conductive WOx sol...Low-voltage WOx gated indium-zinc-oxide thin-film transistors(TFTs)with in-plane-gate structures are fabricated by using an extremely simplified one-shadow mask method at room temperature.The proton conductive WOx solid-state electrolyte is demonstrated to form an electric-double-layer(EDL)effect associated with a huge capacitance of 0.51μF/cm^(2).The special EDL capacitance of the WOx electrolyte is also extended to novel in-plane-gate structure TFTs as the gate dielectric,reducing the operating voltage to 1.8 V.Such TFTs operate at n-type depletion mode with a threshold voltage of -0.5 V,saturation electron mobility of 13.2 cm^(2)/V·s,ON/OFF ratio of 1.7×10^(6),subthreshold swing of 110 mV/dec,and low leakage current less than 7 nA.The hysteresis window of the transfer curves is also explained by an unique reaction within the WOx electrolyte.展开更多
利用STM32单片机设计了一种电池管理系统,实现15节串联锂电池的有效管理。采用BQ76940电池监控芯片设计检测单元,并基于开关电容的电力、电子、电路设计主动均衡单元。系统还利用安时积分法和开路电压法估算电池的荷电状态(State of Cha...利用STM32单片机设计了一种电池管理系统,实现15节串联锂电池的有效管理。采用BQ76940电池监控芯片设计检测单元,并基于开关电容的电力、电子、电路设计主动均衡单元。系统还利用安时积分法和开路电压法估算电池的荷电状态(State of Charge,SOC),以及利用电池等效模型和通过参数辨识的方法实现在线检测电池的内阻增大性失效故障。介绍了该电池管理系统软硬件的设计方法,并对电池管理系统中的检测单元、均衡单元和内阻辨识进行了测试。实验结果表明:该电池管理系统能够采集电池的电压、电流和温度,能对电压不一致的单体电池进行均衡,并且有效辨识出电池的内阻,具有采样精度高、均衡效果好和能在线检测电池内阻等优点。展开更多
基金Supported by the Natural Science Foundation of Zhejiang Province under Grant No 0804201051the Natural Science Foundation of Shanghai under Grant No 13ZR1428200.
文摘Low-voltage WOx gated indium-zinc-oxide thin-film transistors(TFTs)with in-plane-gate structures are fabricated by using an extremely simplified one-shadow mask method at room temperature.The proton conductive WOx solid-state electrolyte is demonstrated to form an electric-double-layer(EDL)effect associated with a huge capacitance of 0.51μF/cm^(2).The special EDL capacitance of the WOx electrolyte is also extended to novel in-plane-gate structure TFTs as the gate dielectric,reducing the operating voltage to 1.8 V.Such TFTs operate at n-type depletion mode with a threshold voltage of -0.5 V,saturation electron mobility of 13.2 cm^(2)/V·s,ON/OFF ratio of 1.7×10^(6),subthreshold swing of 110 mV/dec,and low leakage current less than 7 nA.The hysteresis window of the transfer curves is also explained by an unique reaction within the WOx electrolyte.
文摘利用STM32单片机设计了一种电池管理系统,实现15节串联锂电池的有效管理。采用BQ76940电池监控芯片设计检测单元,并基于开关电容的电力、电子、电路设计主动均衡单元。系统还利用安时积分法和开路电压法估算电池的荷电状态(State of Charge,SOC),以及利用电池等效模型和通过参数辨识的方法实现在线检测电池的内阻增大性失效故障。介绍了该电池管理系统软硬件的设计方法,并对电池管理系统中的检测单元、均衡单元和内阻辨识进行了测试。实验结果表明:该电池管理系统能够采集电池的电压、电流和温度,能对电压不一致的单体电池进行均衡,并且有效辨识出电池的内阻,具有采样精度高、均衡效果好和能在线检测电池内阻等优点。
