蓄电池的电压、内阻、温度等可测量的表征参数以及它们之间的关系可以反映蓄电池复杂的内部变化.因此,通过监测蓄电池的电压、内阻、温度等的变化可以为蓄电池管理提供一定的参考.该文以铅酸蓄电池为研究对象,设计搭建了一套蓄电池参数采集实验系统.该系统以六位半多功能数字万用表作为辅助测量设备,在后续电路的控制下,通过软件实现高精度、连续、实时测量电压与保存数据;采用差分放大电路,并利用最小二乘法进行标定以提高内阻测试的精度与稳定性.最终将测量结果发送到参数采集终端,显示在液晶屏幕上.同时,通过专用软件可以实现远程监测、参数采集以及数据处理等功能.该系统利用Altium Designer电子产品开发系统设计硬件电路板,利用C与C++语言编写硬件与软件程序.实践表明,该系统测量结果精度高,稳定性好,对于研究蓄电池的综合特性具有较高的实用价值.

The characterizstic parameters such as voltage,resistance,and temperature of the battery and the relationship between them may reflect the complex internal changes of batteries.Therefore by detecting changes for voltage,resistance and temperature of the battery can provide some references for battery management.This paper describes a battery parameter acquisition experimental system based on lead-acid batteries.The system uses a multifunction digital multimeter to six and a half as an auxiliary measuring equipment,under the control of the follow-up circuit,and with the aid of software achieves a high accuracy,continuous,real-time measurement of voltage and data saving.The system uses the differential amplifier circuit,and makes use of the method of least squares to calibrate and to improve the accuracy and stability of resistance testing.The measurement results will be sent to the measurement collection terminals to display on the LCD screen.Meanwhile,through a dedicated software it can also achieve remote monitoring,parameters acquiring and data processing.The system makes use of Altium Designer electronic product development system to design hardware board, and makes use of C and C++ language to write hardware and software programs.Practices shows that the system is of high accuracy,and good stability,and has a- high practical value for the study of the integrated nature of the battery.