Propulsion Energy Storage Control System and Method of Control
First Claim
1. A propulsion energy storage control system in a hybrid electric vehicle, the hybrid electric vehicle having a propulsion DC bus, a first propulsion energy storage subsystem, and a second propulsion energy storage subsystem, the propulsion energy storage control system comprising:
- an energy storage DC bus, the energy storage bus being separate and distinct from the propulsion DC bus;
a propulsion DC bus interface configured to couple the propulsion energy storage control system with the propulsion DC bus;
a propulsion bus DC-to-DC converter selectably coupled to and electrically interspersed between the propulsion DC bus interface and the energy storage DC bus;
a first energy storage subsystem interface configured to couple the propulsion energy storage control system with the first propulsion energy storage subsystem;
a first energy storage DC-to-DC converter selectably coupled to and electrically interspersed between the first energy storage subsystem interface and the energy storage DC bus;
a second propulsion energy storage subsystem interface configured to couple the propulsion energy storage control system with the second propulsion energy storage subsystem;
a second energy storage DC-to-DC converter selectably coupled to and electrically interspersed between the second propulsion energy storage subsystem interface and the energy storage DC bus;
a controller configured to operate the first energy storage DC-to-DC converter, the second energy storage DC-to-DC converter, and the propulsion bus DC-to-DC converter.
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Accused Products
Abstract
A propulsion energy storage control system and method of control interspersed between a heavy duty hybrid-electric drive system and its propulsion energy storage. The control system having an energy storage DC bus, electrical interfaces to the drive system and a plurality of propulsion energy storage subsystems, DC-to-DC converters at each interface, and a controller configured to operate each DC-to-DC converter independently such that power flow may charge, discharge, and shuttle between the plurality of propulsion energy storage subsystems.
106 Citations
20 Claims
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1. A propulsion energy storage control system in a hybrid electric vehicle, the hybrid electric vehicle having a propulsion DC bus, a first propulsion energy storage subsystem, and a second propulsion energy storage subsystem, the propulsion energy storage control system comprising:
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an energy storage DC bus, the energy storage bus being separate and distinct from the propulsion DC bus; a propulsion DC bus interface configured to couple the propulsion energy storage control system with the propulsion DC bus; a propulsion bus DC-to-DC converter selectably coupled to and electrically interspersed between the propulsion DC bus interface and the energy storage DC bus; a first energy storage subsystem interface configured to couple the propulsion energy storage control system with the first propulsion energy storage subsystem; a first energy storage DC-to-DC converter selectably coupled to and electrically interspersed between the first energy storage subsystem interface and the energy storage DC bus; a second propulsion energy storage subsystem interface configured to couple the propulsion energy storage control system with the second propulsion energy storage subsystem; a second energy storage DC-to-DC converter selectably coupled to and electrically interspersed between the second propulsion energy storage subsystem interface and the energy storage DC bus; a controller configured to operate the first energy storage DC-to-DC converter, the second energy storage DC-to-DC converter, and the propulsion bus DC-to-DC converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for controlling a propulsion energy storage in a hybrid electric vehicle, the hybrid electric vehicle having a propulsion DC bus, a first propulsion energy storage subsystem, and a second propulsion energy storage subsystem, the method comprising:
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providing an energy storage DC bus, the energy storage bus being separate and distinct from the propulsion DC bus; providing a propulsion DC bus interface configured to couple the propulsion energy storage control system with the propulsion DC bus; providing a propulsion bus DC-to-DC converter selectably coupled to and electrically interspersed between the propulsion DC bus interface and the energy storage DC bus; providing a first energy storage subsystem interface configured to couple the propulsion energy storage control system with the first propulsion energy storage subsystem; providing a first energy storage DC-to-DC converter selectably coupled to and electrically interspersed between the first energy storage subsystem interface and the energy storage DC bus; providing a second propulsion energy storage subsystem interface configured to couple the propulsion energy storage control system with the second propulsion energy storage subsystem; providing a second energy storage DC-to-DC converter selectably coupled to and electrically interspersed between the second propulsion energy storage subsystem interface and the energy storage DC bus; selectably, electrically coupling the energy storage DC bus and the propulsion DC bus via the propulsion bus DC-to-DC converter; selectably, electrically coupling the energy storage DC bus and the first propulsion energy storage subsystem via the first energy storage DC-to-DC converter; and
,selectably, electrically coupling the energy storage DC bus and the second propulsion energy storage subsystem via the first energy storage DC-to-DC converter. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification