Stack dc power supply battery charger
AssigneeSchneider Electric It Corporation
InventorQinghong Yu
Life of this patent
Estimating the term…
Abstract
According to at least one aspect, embodiments herein provide a method for operating a battery charging system, the method comprising receiving, by a first rectifier, a first AC voltage, receiving, by a second rectifier, a second AC voltage, converting, by the first rectifier, the first AC voltage to a first DC voltage, converting, by the second rectifier, the second AC voltage to a second DC voltage, biasing, by the second rectifier, the first rectifier with the second DC voltage, biasing, by the second rectifier, a battery charger with the second DC voltage, providing, by the first rectifier, a biased voltage to the battery charger, and providing, by the battery charger, a second power to a battery.
Claims20
A battery charging system comprising:
- a first input and a second input configured to receive an input voltage;
- a first battery output and a second battery output configured to couple to a battery to provide an output voltage;
- a transformer having a primary winding coupled to the first input and to the second input, and having a first secondary winding and a second secondary winding;
- a first rectifier having a first input coupled to the first secondary winding and having a second input and a first output;
- a second rectifier having an input coupled to the second secondary winding and having a first output and a second output, wherein the first output of the second rectifier is coupled to the second input of the first rectifier and the second output of the second rectifier is coupled to the second battery output;
- and
- a charger having a first input coupled to the first output of the first rectifier and a second input coupled to the first output of the second rectifier, and having a first output coupled to the first battery output, and configured to provide a charging current to the battery coupled to the first battery output and to the second battery output.
A method for operating a battery charging system, the method comprising:
- receiving, by a first rectifier, a first AC voltage;
- receiving, by a second rectifier, a second AC voltage;
- converting, by the first rectifier, the first AC voltage to a first DC voltage;
- converting, by the second rectifier, the second AC voltage to a second DC voltage;
- biasing, by the second rectifier, the first rectifier with the second DC voltage;
- biasing, by the second rectifier, a battery charger with the second DC voltage;
- providing, by the first rectifier, a biased voltage to the battery charger;
- and
- providing, by the battery charger, a second power to a battery.
A battery charging system comprising:
- a first input and a second input configured to receive an input voltage;
- a first battery output and a second battery output configured to couple to a battery to provide an output voltage to charge the battery to a fully-charged voltage level;
- means for providing a charging current to the battery coupled to the first battery output and to the second battery output using a voltage from a charging circuit derived from the input voltage, wherein the voltage from the charging circuit is less than half of the fully-charged voltage level.
Dependencies are inferred from the claim text.