Multi-source energy storage system and energy management and control method
First Claim
1. A multi-source energy storage system, comprising:
- a first energy storage system selectively coupled to an electric load via a first DC-to-DC converter;
a by-pass coupled to the first energy storage system and the electric load;
a second energy storage system selectively coupled to the first energy storage system and the electric load via a second DC-to-DC converter;
a first switch device coupled between the first energy storage system and the first DC-to-DC converter;
a second switch device coupled between the second energy storage system and the second DC-to-DC converter; and
a controller configured to operate the multi-source energy storage system in;
a pre-charge mode to pre-charge the second energy storage system with the first energy storage system through the second DC-to-DC converter, wherein the first switch device is opened and the second switch device is closed; and
a normal operation mode to couple the second energy storage system to the electric load via the second DC-to-DC converter, wherein the first switch device and second switch device are closed.
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Abstract
A multi-source energy storage system, it includes a first energy storage system, a second energy storage system, and a second DC/DC converter and controller and a method for supplying power to an electrical load from multiple energy storage systems. The first energy storage system can be coupled to an electrical load. The second DC/DC converter and controller can be coupled between at least one of the following: a second energy storage system and a first energy storage system or electrical load. The controller settings control the first and second energy storage systems and the second DC/DC converter runs in both precharge mode and normal mode. In the precharge mode, the first energy storage system charges the second energy storage system via the second DC/DC converter. In normal mode, the second energy storage is coupled to the electrical load via the second DC/DC converter.
25 Citations
18 Claims
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1. A multi-source energy storage system, comprising:
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a first energy storage system selectively coupled to an electric load via a first DC-to-DC converter; a by-pass coupled to the first energy storage system and the electric load; a second energy storage system selectively coupled to the first energy storage system and the electric load via a second DC-to-DC converter; a first switch device coupled between the first energy storage system and the first DC-to-DC converter; a second switch device coupled between the second energy storage system and the second DC-to-DC converter; and a controller configured to operate the multi-source energy storage system in; a pre-charge mode to pre-charge the second energy storage system with the first energy storage system through the second DC-to-DC converter, wherein the first switch device is opened and the second switch device is closed; and a normal operation mode to couple the second energy storage system to the electric load via the second DC-to-DC converter, wherein the first switch device and second switch device are closed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for operating a multi-source energy storage system, including a first energy storage system, a second energy storage system, a first DC-to-DC converter, a second DC-to-DC converter, a by-pass, a first switch device, and a second switch device, the method comprising:
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operating in a pre-charge mode to pre-charge the second energy storage system with the first energy storage system through the second DC-to-DC converter, wherein the first switch device is opened and the second switch device is closed; and operating in a normal operation mode to couple the second energy storage system to an electric load via the second DC-to-DC converter, wherein the first switch device and second switch device are closed. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification