Smart Split Charger

Project: Research

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Conventional split chargers, which are commonly used on vehicles, connect vehicle starter battery and auxiliary batteries via mechanical or semiconductor switches upon charging. They also isolate energy delivery among the batteries. When a battery is in use, its load current will not be shared by the other. However, modern vehicle charging systems, such as the one on ambulances, keep checking the state of charge of the starter battery. After the starter battery has been fully charged up, the charging system will stop delivering power and thus stop charging the auxiliary batteries. Then, the auxiliary batteries might be over-discharged by their connected loads and, thus, their lifetime will be shortened. This project aims to develop a “Smart Split Charger (SSC)” that can monitor, schedule, and alter the charging profiles of the starter and auxiliary batteries. The starter and auxiliary batteries will not be over-discharged by the loads. Moreover, the SSC can extract the intrinsic parameters of the batteries, so that it can provide operators with the state-of-charge and state-of-health of all batteries on aboard. Under the support of the Electrical and Mechanical Services Department, the developed smart split charger will be evaluated on an ambulance.


Project number9440214
Grant typeITF
Effective start/end date1/07/1930/06/21