摘要
为解决煤矿井下工作面无线监测节点的供电问题,基于温差发电片及升压管理模块设计了一种井下设备表面温差的热电能量收集装置,并利用该装置为锂离子电池供电。试验结果表明,该电路能够在低至100 mV时持续能量采集;采用风冷或水冷散热方式,可使温差发电片的稳定输出功率提高几十倍;采用bq25505升压管理模块收集温差热能,可使锂电池的放电工作时间显著提高,并且该模块的能量转化效率可达67%。因此,该装置能够有效提高井下无线节点的工作周期。
In order to solve the problem of power supply of wireless monitoring node in coal mine working face,a thermoelectric energy harvesting device for the surface temperature difference of downhole equipment is designed based on the thermal electric generator(TEG)and boost management module in this paper.The device is used to charge the lithium ion battery.Experimental results show that the circuit can continue energy harvesting from input sources as low as100mV.The stable output power of TEG can be increased by several tens of times using air cooling or water cooling.The bq25505device is specifically designed to efficiently extract the power generated from the TEG.It can significantly increase the discharge working time of the lithium battery,and the energy conversion efficiency of the module is up to67%.Therefore,the device can effectively improve the working cycle of the downhole wireless node.
作者
冯凯
郭雨
赵端
翟勃
王卫龙
Feng Kai;Guo Yu;Zhao Duan;Zhai Bo;Wang Weilon(Mine Internet Application Technology National and Local Joint Engineering Laboratory,Xuzhou 221008,China;China University of Mining and Technology CUMT-IoT Perception Mine Research Center,Xuzhou 221008,China;Shandong Energy Zibo Mining Refco Group Ltd Information Center,Zibo 255199,China)
出处
《电子技术应用》
2018年第12期93-96,共4页
Application of Electronic Technique
基金
国家重点研发计划项目(2017YFC0804402)
关键词
热电能量采集模块
温差发电片
bq25505
储能
thermoelectric energy harvesting module
thermal electric generator
bq25505
energy storage
