Energy storage system with range extender and energy management and control method
First Claim
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1. A system, comprising:
- a first energy storage system;
a range extender positioned between the first energy storage system and an electric load, the range extender comprising;
a first DC-to-DC converter selectably coupled between the first energy storage system and the electric load;
a second energy storage system;
a second DC-to-DC converter selectably coupled between the second energy storage system and at least one of an output side of the first DC-to-DC converter and an input side of the electric load; and
a by-pass selectably coupled between the first energy storage system and at least one of the output side of the first DC-to-DC converter, an output side of the second DC-to-DC converter, and the input side of the electric load; and
a controller configured to control the first energy storage system and the range extender to work in at least one of a normal operation mode and a fault protection mode, whereinin the normal operation mode, the first and second energy storage systems are parallel coupled to the electric load through the first and second DC-to-DC converters, respectively; and
in the fault protection mode, the first energy storage system is coupled to the electric load through the by-pass, and the second energy storage system is decoupled from the electric load.
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Abstract
A system comprises a first energy system, a range extender, and a controller. The range extender has a second energy system, first and second converters, and a by-pass. The first converter is selectably coupled between the first energy system and an electric load, the second converter is selectably coupled between the second energy system and at least one of an output side of the first converter and an input side of the electric load, and the by-pass is selectably coupled between the first energy system and at least one of the output side of the first converter, an output side of the second converter and the input side of the electric load.
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Citations
19 Claims
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1. A system, comprising:
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a first energy storage system; a range extender positioned between the first energy storage system and an electric load, the range extender comprising; a first DC-to-DC converter selectably coupled between the first energy storage system and the electric load; a second energy storage system; a second DC-to-DC converter selectably coupled between the second energy storage system and at least one of an output side of the first DC-to-DC converter and an input side of the electric load; and a by-pass selectably coupled between the first energy storage system and at least one of the output side of the first DC-to-DC converter, an output side of the second DC-to-DC converter, and the input side of the electric load; and a controller configured to control the first energy storage system and the range extender to work in at least one of a normal operation mode and a fault protection mode, wherein in the normal operation mode, the first and second energy storage systems are parallel coupled to the electric load through the first and second DC-to-DC converters, respectively; and in the fault protection mode, the first energy storage system is coupled to the electric load through the by-pass, and the second energy storage system is decoupled from the electric load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method, comprising:
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operating a system comprising a first energy storage system, a first DC-to-DC converter, a by-pass parallel to the first DC-to-DC converter, a second energy storage system, and a second DC-to-DC converter in a normal operation mode, the normal operation mode comprising parallel powering an electric load by the first and second energy storage systems through the first and second DC-to-DC converters respectively; and operating the system in a fault protection mode when a fault is detected in any of the second energy storage system and the first and second DC-to-DC converters, the fault protection mode comprising powering the electric load by the first energy storage system through the by-pass and decoupling the second energy storage system from the electric load. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification