This paper presents the structure of the control module (CUi and CUv) used in control unit SD08, Semiconductor Breaker and Relay (SBR) and the Charging and Discharging Adjuster of batteries (CDAB) etc, and introduces the electronic monitoring and control of vehicle circuit system with SBR and the cyclic charging of batteries with CDAB. It is proved by theoretical analysis and experiments that, by using SBR and CDAB etc, the circuit system can be protected more effectively than by using traditional circuit protectors, vehicle fires caused by short circuits can be prevented, and the battery service life can be extended.
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