Shunt equalization charging method
A technology of equalizing charging and chargers, which is applied in current collectors, electric vehicles, electrical components, etc., can solve the problems of affecting equalization effect, short equalization time, and large variation range of cell voltage, so as to improve charging efficiency and long equalization time. , good balance effect
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[0022] see figure 1 As shown, B1, B2, ..., BN are battery cells in the series battery pack, and the charger is connected to the series battery pack in parallel to charge the series battery pack. Each battery cell B1, B2, ..., BN is connected in parallel with a shunt device, and all the shunt devices are connected to the detection circuit, and the detection circuit and all the shunt devices are respectively connected to the control circuit. Each shunt device is composed of a shunt circuit and a switch connected in series with the shunt circuit, and the switches in the shunt device connected in parallel with the battery cells B1, B2, ..., BN are switches S1, S2, ..., SN respectively.
[0023] The shunt device can be a constant current source, a DC / DC conversion circuit, a resistor, or other types of energy conversion devices. DC / DC conversion circuits can be forward, flyback, single bridge, full bridge, LLC, push-pull, boost, BUCK-BOOST and other circuits.
[0024] The entire ...
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