Multiphase interleaved converter based battery equalization circuit and control method therefor
A technology of battery balancing and multi-phase interleaving, applied in charge balancing circuits, battery circuit devices, arrangement of multiple synchronous batteries, etc. It can solve problems such as huge size, and achieve the effect of solving the limitation of increasing the equalization current, overcoming the conduction voltage drop, and shortening the equalization time.
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[0056] Such as figure 1 As shown, a battery balancing circuit based on a multi-phase interleaved converter and its control method, including a microcontroller, 5 half-bridge circuits, 5 inductors and 6 battery cells.
[0057] The microcontroller includes an analog-to-digital conversion module and a pulse width modulation PWM signal output terminal, wherein the analog-to-digital conversion module is connected to each battery cell through a voltage detection circuit, and is used to convert the voltage signal of the battery cell into Digital signal to obtain the voltage of the battery cells in the battery pack;
[0058] The output terminal of the pulse width modulation PWM signal is connected to the half-bridge circuit through the driving circuit, and is used to generate the control driving signal of the MOS transistor switch in the half-bridge circuit;
[0059] The half-bridge circuit is composed of two MOS transistors in series, that is, the drain of the upper-bridge MOS trans...
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