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US 8,896,263 B2Granted
Critical mode control discontinuous mode boost-buck charger
AssigneeEetrex, Inc.
InventorsChris Riggio, Brian Houghton
Life of this patent
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Abstract
Aspects of the present disclosure involve a charging system that provides a consistent specified charge power to a battery. Aspects of the disclosure also involve a bi-directional inverter charger system using boost and buck topologies substantially similar to buck and boost topologies for the charging system.
Claims13
An apparatus for charging an energy storage system comprising:
- a rectifier configured to receive an alternating current supply voltage and provide a full wave rectified direct current voltage;
- a boost circuit receiving the full wave rectified direct current voltage, the boost circuit including a boost inductor coupled between the rectifier and a boost switch configuration, the boost switch across the rectifier, the boost switch configuration alternating between charging the inductor in an on state and allowing the inductor to boost the full wave rectified direct current voltage to a boosted voltage and charge a link capacitor provided in parallel with the boost switch;
- and
- a buck circuit configured to receive the boosted voltage from the link capacitor, the buck circuit configured to provide a substantially steady specified charge power to at least one battery, the buck circuit including a buck inductor, a buck diode and a buck switch configuration, the buck switch configuration configured to turn on to charge the boost inductor and turn off to provide a charge current to the battery, the buck switch configuration receiving a buck pulse width modulated control signal to provide the specified charge power to the battery.
1 more element
Dependencies are inferred from the claim text.