摘要
当今电动车已发生了巨大变化,类型也多种多样。现阶段的电动车供电方案都为锂电池,但锂电池存在充电速度较慢、低温特性差、循环次数有限等缺点,因此该设计提出采用超级电容作为供电模块,通过高速无线充电方案,结合LoRa模块组成LoRaWan,配合云端技术,设计出基于LoRa技术能够自动寻找充电桩的无线充电车的系统。该设计是由发射端和接收端两部分电路构成的系统,LoRa无线模块为辅构成的发射系统,接收端是以STM8L152K4芯片为控制核心,无线充电电压为5 V,供电电流不大于1 A。使用电源容量(法拉电容器)罐超级电容器。实验结果表明,基于LoRa的无线充电小车的整体充电速率高达73%,在无线传输方面也非常稳定。研究表明,基于Lo⁃Ra的无线充电小车在将来新能源市场中,是重点发展的方向。
great changes have taken place in today's electric vehicles,and there are various types.At present,the power supply schemes of electric vehicles are all lithium batteries,but the charging speed of lithium batteries is slow,the low⁃temperature characteristics are poor,the number of cycles is limited,and so on.Therefore,this design proposes to use super capacitor as the power supply module.Through the high⁃speed wireless charging scheme,combined with LoRa module,LoRaWan is composed.Combined with cloud technology,a wireless charging vehicle based on LoRa technology can automatically find charging piles is designed The system.this design is a system composed of two parts of circuits:the transmitter and the receiver.The LoRa wireless module is the auxiliary transmitter system.The receiver uses STM8l152K4 chip as the control core.The wireless charging adopts the voltage of 5 V and the power supply current is no more than 1 A.The power supply uses super capacitor(Faraday capacitor)with appropriate capacity to store energy.The experimental results show that the overall charging rate of the wireless charging car based on LoRa is as high as 73%,and it is also very stable in wireless transmission.The research shows that the wireless charging car based on LoRa will be the key development direction in the new energy market in the future.
作者
王思远
刘文财
邱在誉
张晓洋
林煌
WANG Siyuan;LIU Wencai;QUI Zaiyu;ZHANG Xiaoyang;LIN Huang(College of Information Engineering,Yango University,Fuzhou 350015,China)
出处
《电子设计工程》
2020年第22期136-140,共5页
Electronic Design Engineering
