Power converter, power conversion system, and power conversion method
AssigneeContemporary Amperex Technology Co., Limited
InventorsMeng Li, Zhimin Dan, Yizhen Hou
Life of this patent
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Abstract
A power converter as provided includes: a control circuit configured to receive a first electric energy supplied to the control circuit from an energy storage device, receive a second electric energy supplied to the control circuit from a power grid equipment, and be powered on with a third electric energy which is the first electric energy or the second electric energy, and output a control signal; and a power conversion circuit configured to receive the control signal and perform power conversion between the energy storage device and the power grid equipment according to the control signal.
Claims15
A power converter, wherein one side of the power converter is connected to a power grid equipment, the other side of the power converter is connected to an energy storage device located inside a vehicle, and the power grid equipment supplies power to the energy storage device through the power converter, the power converter comprising:
- a control circuit;
- a power conversion circuit;
- a first converter;
- and
- a second converter,
- wherein:
- the control circuit is configured to:
- receive a second electric energy supplied to the control circuit from the power grid equipment through the second converter, and
- output a fourth control signal to control the power conversion circuit to work after being powered on;
- the power conversion circuit is configured to receive the fourth control signal and perform power conversion between the energy storage device and the power grid equipment according to the fourth control signal;
- the first converter is configured to be in a working state after taking electricity from the power conversion circuit, down-convert an electric energy output from the power conversion circuit into a ninth electric energy in response to a fifth control signal, and supply power to the control circuit with the ninth electric energy;
- and
- the control circuit is further configured to select the second electrical energy or the ninth electrical energy as the power supply of the control circuit based on a competitive power supply mode.
A power conversion method, comprising:
- receiving, by a control circuit, a second electric energy supplied to the control circuit from a power grid equipment through a second converter;
- outputting, by the control circuit, a fourth control signal to control a power conversion circuit connected between an energy storage device and the power grid equipment to work after being powered on;
- receiving, by the power conversion circuit, the fourth control signal and performing power conversion between the energy storage device and the power grid equipment according to the fourth control signal;
- being, by a first converter, in a working state after taking electricity from the power conversion circuit, down-converting an electric energy output from the power conversion circuit into a ninth electric energy in response to a fifth control signal output from the control circuit, and supplying power to the control circuit with the ninth electric energy;
- and
- selecting, by the control circuit, the second electrical energy or the ninth electrical energy as the power supply of the control circuit based on a competitive power supply mode.
Dependencies are inferred from the claim text.