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Charging device for wearable electromagnetic energy-harvesting textiles
Fashion and Textiles ( IF 2.4 ) Pub Date : 2021-01-15 , DOI: 10.1186/s40691-020-00233-6 Hyewon Lee , Jung-Sim Roh
Fashion and Textiles ( IF 2.4 ) Pub Date : 2021-01-15 , DOI: 10.1186/s40691-020-00233-6 Hyewon Lee , Jung-Sim Roh
The study aims to develop charging devices for wearable electromagnetic energy harvesting textiles (WEHT). Electromagnetic energy through human movement can be easily and naturally generated and is not significantly affected by environmental factors, however, the electric current generated by the electromagnetic method of human movement is difficult to efficiently charge. Three charging circuits for use with wearable electromagnetic energy-harvesting textiles were developed. The three types of charging circuits developed are rectifier, voltage doubler, and voltage quadrupler circuits. The performances of the developed circuits were evaluated in comparison with a normal storage circuit, in which the generated energy is stored immediately. The results show that storage energy was generated from the WEHT in all the developed circuits, and the charging efficiency improved as the simulated walking frequency increased. Energy generated from wearable electromagnetic energy harvesting textiles has the highest storage efficiency when charged with a rectifier circuit. The rectifying circuit method showed a charging rate twice that of a normal storage circuit. The charging speed of the rectifier circuit was faster to reach 3.7 V, the nominal maximum barrier voltage of the single-cell lithium-ion batteries used in portable devices, than the normal charging circuit. In the voltage multiplier circuit, the voltage drop generated in the circuit was large, so the charging efficiency was not superior to the normal circuit or rectifier circuit. In conclusion, it is most effective to use a rectifier circuit for charging portable electronic devices using the energy harvested by wearable electromagnetic energy harvesting textiles.
中文翻译:
耐磨电磁能量采集织物的充电装置
该研究旨在开发用于可穿戴电磁能量收集纺织品(WEHT)的充电设备。通过人类运动产生的电磁能可以很容易地自然产生,并且不受环境因素的显着影响,但是,通过人类运动的电磁方法产生的电流很难有效充电。开发了三种用于可穿戴电磁能量收集纺织品的充电电路。开发的三种类型的充电电路是整流器,倍压器和倍压器电路。与正常存储电路相比,评估了已开发电路的性能,在正常存储电路中,所产生的能量被立即存储。结果表明,在所有开发的电路中,WEHT都产生了存储能量,随着步行频率的增加,充电效率也随之提高。当使用整流器电路充电时,可穿戴电磁能量收集纺织品产生的能量具有最高的存储效率。整流电路方法显示的充电速率是普通存储电路的两倍。整流器电路的充电速度比普通充电电路更快,达到3.7 V,这是便携式设备中使用的单节锂离子电池的标称最大势垒电压。在倍压电路中,电路中产生的电压降大,因此充电效率不优于常规电路或整流器电路。结论,
更新日期:2021-01-16
中文翻译:
耐磨电磁能量采集织物的充电装置
该研究旨在开发用于可穿戴电磁能量收集纺织品(WEHT)的充电设备。通过人类运动产生的电磁能可以很容易地自然产生,并且不受环境因素的显着影响,但是,通过人类运动的电磁方法产生的电流很难有效充电。开发了三种用于可穿戴电磁能量收集纺织品的充电电路。开发的三种类型的充电电路是整流器,倍压器和倍压器电路。与正常存储电路相比,评估了已开发电路的性能,在正常存储电路中,所产生的能量被立即存储。结果表明,在所有开发的电路中,WEHT都产生了存储能量,随着步行频率的增加,充电效率也随之提高。当使用整流器电路充电时,可穿戴电磁能量收集纺织品产生的能量具有最高的存储效率。整流电路方法显示的充电速率是普通存储电路的两倍。整流器电路的充电速度比普通充电电路更快,达到3.7 V,这是便携式设备中使用的单节锂离子电池的标称最大势垒电压。在倍压电路中,电路中产生的电压降大,因此充电效率不优于常规电路或整流器电路。结论,