铅酸蓄电池充放电监测控制系统

发布时间：2018-06-29 21:55

本文选题：铅酸蓄电池 + 充放电监测　；参考：《杭州电子科技大学》2017年硕士论文

【摘要】：不合理的充放电使得铅酸蓄电池容量快速下降、使用寿命缩短,影响其供电的安全性。为解决此问题,论文根据铅酸蓄电池的充放电特性设计了一种充放电监测控制系统。论文主要完成以下工作:(1)研究分析铅酸蓄电池的充放电特性,确定影响其使用寿命的主要因素:过充电、过放电、环境温度、长期浮充电、串联电池组单体电池不均衡。(2)完成充放电监测电路设计。以STM32单片机为主控芯片,完成串联铅酸电池组充放电电流检测、单体电池电压和温度检测、通信以及辅助电源等电路的设计。为保证系统安全,设计使用线性光耦HCNR201和电流传感器ACS712分别实现电压和电流的隔离检测。(3)完成充放电控制电路设计。完成铅酸电池组放电隔离控制电路的设计,使用光耦和MOS管驱动芯片IRS21850S完成基于Buck电路的充电电压隔离控制电路的设计。(4)完成系统软件设计。完成系统各功能模块和整个系统的软件设计,实现对串联铅酸电池组充放电状态的监测,并根据监测数据完成放电控制、充电电压温度补偿以及充电均衡控制。(5)完成系统测试与分析。完成整个系统的搭建,对系统的各功能模块和整体进行测试与分析,并进行误差修正。测试结果表明,设计的铅酸蓄电池充放电监测控制系统,串联电池组电压检测精度达到±100mV,单体蓄电池电压检测精度达到±50mV,电流检测误差低于2%,实现了充电电压温度补偿控制和均衡充电控制,能对铅酸蓄电池充放电进行有效监测控制。
[Abstract]:Unreasonable charge and discharge make the capacity of lead-acid battery decrease rapidly and shorten its service life, which affects the safety of its power supply. In order to solve this problem, a charge and discharge monitoring and control system is designed according to the charge-discharge characteristics of lead-acid battery. The main work of this paper is as follows: (1) the charge-discharge characteristics of lead-acid batteries are analyzed, and the main factors affecting their service life are determined: overcharge, overdischarge, ambient temperature, long-term floating charging. The single cell in series battery is unbalanced. (2) the design of charge and discharge monitoring circuit is completed. Using STM32 single chip computer as the main control chip, the design of charge / discharge current detection, single cell voltage and temperature detection, communication and auxiliary power supply of series lead-acid battery is completed. In order to ensure the safety of the system, the linear optocoupler HCNR201 and the current sensor ACS712 are used to separate the voltage and current, respectively. (3) the charge and discharge control circuit is designed. The discharge isolation control circuit of lead-acid battery is designed, and the charging voltage isolation control circuit based on Buck circuit is designed by using optocoupler and MOS driver chip IRS21850S. (4) the system software is designed. The function modules of the system and the software design of the whole system are completed, and the charge and discharge status of the series lead acid battery pack is monitored, and the discharge control is completed according to the monitoring data. Charging voltage temperature compensation and charge equalization control. (5) complete system testing and analysis. The whole system is built, the function modules and the whole system are tested and analyzed, and the error correction is carried out. The test results show that the design of lead acid battery charge and discharge monitoring control system, The accuracy of voltage detection of series battery pack is 卤100mV, that of single battery is 卤50mV, the error of current detection is less than 2mV, the temperature compensation control of charging voltage and equalizing charging control are realized, and the charge and discharge of lead-acid battery can be effectively monitored and controlled.
【学位授予单位】：杭州电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM912.1

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