Multi-input transformation-based dual-layer active balance circuit and implementation method
An active balancing, multi-input technology, applied in charge balancing circuits, circuit devices, battery circuit devices, etc., can solve the problems of difficult modular expansion, slow balancing speed, and low balancing efficiency, and achieve high balancing efficiency and overall balance. , Overcome the effect of low equilibrium efficiency
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[0055] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0056] Such as figure 1 As shown, a dual-layer active equalization circuit based on multiple-input conversion (MIC), including a microcontroller, a bottom-level equalization unit, a top-level equalization unit, and a switching relay. Every two adjacent battery cells share a bottom balancing unit; a module is composed of several battery cells in series, and every four modules share a top balancing unit and two switching relays; the microcontroller sends a PWM signal to control A bottom-level equalization unit realizes the charging and discharging state of the bottom-level equalization unit through buck-boost conversion, thereby completing the energy balance of two adjacent battery cells; the microcontroller sends two identical PWM signals to control a top-level equalization unit, and Send two switching signals to control the switching of the relay, and ...
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