Active equalization system of lithium-ion power battery and equalization method thereof
A power battery, active balancing technology, applied in secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve problems such as overcharge, reverse battery life impact, low battery capacity, etc., to achieve extended life, Simple structure and high efficiency
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[0013] An active balancing system for lithium-ion power batteries, including a battery module B composed of multiple battery cells in series, the primary coil L of the transformer T is connected to the positive and negative poles of the battery module B through the main switch S, and each secondary of the transformer T The coils are respectively connected to the positive and negative electrodes of each battery cell through each branch switch, the main switch S is connected between the signal input terminal and the ground terminal of the main control chip MCU, and the sampling processing circuit 1 is connected to the signal terminal of the main control chip MCU. between the input terminal and the main switch S, such as figure 1 shown.
[0014] combine figure 1 , 2 , the sampling processing circuit 1 includes a diode D1, the anode of the diode D1 is connected to one end of the primary coil L, the cathode of the diode D1 is divided into two outputs, one is connected to one end ...
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