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US 9,283,864 B2Granted
Circuit, electric power train and method for charging a battery
AssigneeInfineon Technologies AG
InventorsPhilip Georg Brockerhoff, Anton Mauder
Life of this patent
Estimating the term…
Abstract
A circuit is provided, including a battery, an omnipolar switch, a switching element, a DC-intermediate circuit and a current supplying circuit. The omnipolar switch may be coupled to the battery and may be configured to electrically disconnect the battery. The DC-intermediate circuit may be coupled to the omnipolar switch via the switching element, and the current supplying device may be coupled to the DC-intermediate circuit.
Claims18
A circuit, comprising:
- a battery;
- an omnipolar switch coupled to the battery and configured to electrically disconnect the battery;
- a DC-intermediate circuit coupled to the omnipolar switch via a switching element,
- a current supplying device coupled to the DC-intermediate circuit;
- and
- a control unit configured to operate the switching element depending on at least one of the following:
- a voltage difference between a voltage of the current supplying device and
- a voltage of the battery exceeding a voltage threshold;
- a current flowing from the current supplying device to the battery exceeding a current threshold;
- and
- a temperature exceeding a temperature threshold.
8 more elements
An electric power train, comprising:
- a traction battery;
- an electric drive unit comprising an inverter and a permanently excited synchronous motor coupled to the inverter, wherein the inverter is coupled to the traction battery;
- and
- a switching element coupled between the traction battery and the drive unit, wherein
- the maximum voltage of the drive unit is greater than a minimum voltage of the battery.
2 more elements
A method for charging a battery, comprising:
- coupling and decoupling the battery to a current supplying device via a switching element, wherein a current of the current supplying device is provided by charger or an electric drive unit operated as a generator;
- and
- wherein the switching element has a maximum blocking voltage that is:
- less than a maximum voltage of the current supplying device;
- and
- larger than a difference of a maximum voltage of the current supplying device and a minimum voltage of the battery.
3 more elements
Dependencies are inferred from the claim text.