SYSTEMS AND METHODS FOR SUPPLYING POWER IN A HYBRID VEHICLE USING CAPACITORS, A BATTERY AND ONE OR MORE DC/DC CONVERTERS
First Claim
1. A power management system for a hybrid vehicle including an engine, comprising:
- a battery;
a vehicle power bus that distributes power from the battery to vehicle loads;
a capacitor, wherein the capacitor includes one of a plurality of supercapacitors and a plurality of ultracapacitors;
a starter/generator controller that communicates with the capacitor and the battery; and
a power management module configured to;
supply power from the capacitor to the starter/generator controller during cranking of the engine; and
supply power from the battery to the starter/generator controller during the cranking of the engine,wherein the power supplied by the battery is greater than or equal to 2% and less than or equal to 20% of a total power supplied to the starter/generator controller during the cranking of the engine.
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Accused Products
Abstract
A power management system for a hybrid vehicle including an engine includes a vehicle power bus distributing power from a battery to vehicle loads. A capacitor includes one of a plurality of supercapacitors and a plurality of ultracapacitors. A starter/generator controller communicates with the capacitor and the battery. A power management module is configured to supply current from the capacitor to the starter/generator controller during cranking of the engine; and supply current from the battery to the starter/generator controller during the cranking of the engine. The power supplied by the battery is greater than or equal to 2% and less than or equal to 20% of a total power supplied to the starter/generator controller during the cranking of the engine.
22 Citations
35 Claims
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1. A power management system for a hybrid vehicle including an engine, comprising:
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a battery; a vehicle power bus that distributes power from the battery to vehicle loads; a capacitor, wherein the capacitor includes one of a plurality of supercapacitors and a plurality of ultracapacitors; a starter/generator controller that communicates with the capacitor and the battery; and a power management module configured to; supply power from the capacitor to the starter/generator controller during cranking of the engine; and supply power from the battery to the starter/generator controller during the cranking of the engine, wherein the power supplied by the battery is greater than or equal to 2% and less than or equal to 20% of a total power supplied to the starter/generator controller during the cranking of the engine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for providing power in a hybrid vehicle including an engine, comprising:
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distributing power from a battery to vehicle loads; supplying power from a capacitor to a starter/generator controller during cranking of the engine, wherein the capacitor includes one of a plurality of supercapacitors and a plurality of ultracapacitors; and supplying power from the battery to the starter/generator controller during the cranking of the engine, wherein the power from the battery is greater than or equal to 2% and less than or equal to 20% of a total power supplied to the starter/generator controller during the cranking of the engine. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification