Research On Battery Health Management System Of Walkie-talkie Based On Fractional SOC Algorithm

With the swift progress of world,interphones are diffusely applied in every walks of life,therefore the concentrated administration of walkie-talkies has turned into an expeditious trouble to be resolved.The modern interphones cell health management system is mainly restricted by two aspects:one is that the system is large,with few measurement parameters,and it is inconvenient to carry;the additional is that the metering preciseness of the electric quantity and connected arguments of the interphones is not loud during the charging course.Therefore,this article focuses on the two aspects of walkie-talkie battery power measurement accuracy and walkie-talkie battery health management system design,providing a new idea for the centralized management of walkie-talkies.This article takes the BL1807-x walkie-talkie cell as the study purpose,first assay the jobing philosophy of the ternary lithium cell,and furnish a academic foundation for the follow-up state of charge(State of Charge,SOC)metering;then designs the walkie-talkie battery parameter test terrace,Find the authentic ending voltage and electricity of the lithium cell,and receive the true SOC of the cell via the ampere-hour integral modus;afterward establish a biquad RC equivalent model based on the fractional order based on the biquad RC int-order mould of the lithium cell,and traverse the high Accuracy Grunwald-Letnikvo fractional differential and integral operations establish a mathematical model of lithium battery,and next apply genetic algorithm and least square method to appraise the arguments in the mold.In line with the arguments recognition effects,the cell SOC is appraised and assayed through EKF algorithm,on this basis,the HPFEKF algorithm is planed;Finally,the EKF and HPFEKF algorithms are simulated to estimate the SOC of the lithium battery under constant current conditions,urban road cycling conditions in the United States and highway fuel conditions,and compare them with the real SOC of the battery.It can be seen from the results that the overall average error accuracy of the HPFEKF algorithm is approximately 1.2%better than that of the EKF algorithm.In view of the numerous issues being in the present interphones cell fitness administration,this article uses STM32F405ZGT6 as the main control chip to design the hardware and software of the walkie-talkie battery health management system.The specific functions include charging multiple sets of walkie-talkie batteries,detecting battery voltage,current,SOC,and working status.And battery ID identification,etc.The hardware circuit mainly includes a charging module,an I2C expansion module,a battery fuel gauge module,a network communication module,a liquid crystal display,and a battery adapter module.Link the functional demands to devise the sketch map of each package,and accomplish the connectingup of the PCB plank.In software plan,employ modularisation and fettle engine programming thinking to sequence each mold.Secondly,the software and hardware of the interphones cell fitness administration system are together debugged,and the HPFEKF algorithm is implanted in the chief procedure to achieve the current time metering of the interphones cell electric quantity,thus verifying the practicability of the algorithm.Finally,by building a temperature detection platform to assay the working status of the system at different temperatures,the reliability and stability of the walkie-talkie battery health management system and the HPFEKF algorithm are verified.