METHOD AND APPARATUS FOR CHARGING A VEHICLE ENERGY STORAGE SYSTEM
First Claim
1. A propulsion system comprising:
- an energy system comprising;
a first energy storage system electrically coupled to a direct current (DC) link;
a bi-directional boost converter electrically coupled to the first energy storage system and to the DC link; and
a second energy storage system electrically coupled to the bi-directional boost converter;
an electric drive coupled to the DC link;
an auxiliary energy source coupled to the energy system; and
a system controller configured to;
determine an operational status of the first energy storage system and an operability of the second energy storage system; and
if the first and second energy storage systems are determined to be non-operational, then cause energy from the auxiliary energy source to be supplied to the first energy storage system.
1 Assignment
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Accused Products
Abstract
A propulsion system is provided that includes an energy system, wherein the energy system comprises a first energy storage system electrically coupled to a direct current (DC) link, a bi-directional boost converter electrically coupled to the first energy storage system and to the DC link, and a second energy storage system electrically coupled to the bi-directional boost converter. The propulsion system further comprises an electric drive coupled to the DC link, an auxiliary energy source coupled to the energy system; and a system controller, wherein the system controller is configured to determine an operational status of the first energy storage system and an operability of the second energy storage system, and if the first and second energy storage systems are determined to be non-operational, then the system controller causes energy from the auxiliary energy source to be supplied to the first energy storage system.
40 Citations
24 Claims
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1. A propulsion system comprising:
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an energy system comprising; a first energy storage system electrically coupled to a direct current (DC) link; a bi-directional boost converter electrically coupled to the first energy storage system and to the DC link; and a second energy storage system electrically coupled to the bi-directional boost converter; an electric drive coupled to the DC link; an auxiliary energy source coupled to the energy system; and a system controller configured to; determine an operational status of the first energy storage system and an operability of the second energy storage system; and if the first and second energy storage systems are determined to be non-operational, then cause energy from the auxiliary energy source to be supplied to the first energy storage system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of manufacturing a vehicle propulsion system, the method comprising:
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forming a vehicle energy system comprising; coupling a first energy storage system to a direct current (DC) link; coupling a at least one of a single-channel bi-directional boost converter and a multi-channel bi-directional boost converter to the DC link; and coupling a second energy storage system to the bi-directional boost converter; coupling an electric drive to the vehicle energy system; coupling an auxiliary energy source to the vehicle energy system; and coupling a system controller to the first energy storage system, the second energy storage system, the bi-directional boost converter, and the auxiliary energy source; configuring the system controller to; determine an operational status of the first and second energy storage systems; and transfer energy from the auxiliary energy source to the first energy storage system if it is determined that the operational status of the first energy storage system is below a first predetermined threshold and the operational status of the second energy storage systems is below a second predetermined threshold. - View Dependent Claims (16, 17, 18, 19)
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20. A vehicle system controller programmed to:
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determine an operational capability of a first energy storage system electrically coupled to an electric drive via a direct current (DC) link; determine an operational capability of a second energy storage system electrically coupled to a bi-directional boost converter, wherein the bi-directional boost converter is electrically coupled to the DC link; and enable energy to be transferred to the first energy storage system from an auxiliary energy source if it is determined that the operational capability of the first energy storage system is below a first predetermined threshold and the operational capability of the second energy storage system is below a second predetermined threshold. - View Dependent Claims (21, 22, 23, 24)
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Specification