The Development of Li-dynamic Battery Forming Power Based on DSP

In order to implement the function of the large capacity Li-dynamic battery forming power, a discharge circuit was added into the main circuit of the analog battery charger based on integrated power modules. DSP was used to substitute the initial ancillary circuit. A new control algorithm using bi-loop control structure with dead zone non-linearity characteristic was presented in this paper to fulfill the constant current charge followed with constant voltage charge process. A feed-forward plus feedback control making up for the effect of the time-variable model of the discharge circuit was proposed to fulfill the constant current discharge control. Experiments showed that the system had high precision, fast response speed, no collision during response process and strong network building capability, which satisfied the requirement of the large capacity Li-dynamic battery forming power.