Monitoring of lead acid batteries Continuous measurement of the acid concentration

摘要

A new sensor will be presented, detecting concentration and temperature inside of lead acid batteries. Inserted into battery-management-systems like for example badicheq, the unit is able to indicate the state of charge under almost any circumstances. It is important to know the state of charge of a lead acid battery and it is easy to detect by measuring the acid level and the acid density. While charging and discharging the battery these parameters change very fast and an automatic control is required. So far there is no commercial unit available. We like to present a zero serie unit of such a control, called DensoFlex. The sensor material is a 100 mm long ion exchange material, which changes its length depending on the water concentration.