Multi-Mode Electric Vehicle Charging Station
First Claim
1. A charging station, comprising:
- a symmetric conversion stage, the symmetric conversion stage converting a first waveform to a second waveform according to symmetric conversion parameters set by a system controller, wherein the second waveform is accessible by a first charging interface compatible with the second waveform; and
an asymmetric conversion stage, the asymmetric conversion stage converting the second waveform to a third waveform according to asymmetric conversion parameters, wherein the third waveform is accessible by a second charging interface compatible with the third waveform,wherein the system controller sets the symmetric conversion parameters in such a manner that;
when a first charging protocol is requested at the first charging interface, the second waveform complies with the first charging protocol, andwhen a second charging protocol is requested at the second charging interface, the third waveform complies with the second charging protocol.
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Accused Products
Abstract
A reduced size and complexity multi-mode electric vehicle charging station is provided which allows a user to select AC and DC powerform output and may provide those outputs to connectors for charging electric vehicles. A voltage source is provided to a DC converter that then outputs to a DC bus or electrical connection. The DC bus may be accessed by DC charging equipment or a DC-AC inverter that is connected to AC charging equipment, thereby providing DC and AC charging ability. In one aspect, the multi-mode electric vehicle charging station is used in a rescue vehicle for charging stranded EVs via multiple charging standards without requiring the rescue vehicle to carry independent charging systems for each charging standard. In another aspect, the charging station is used in a stationary charging station to reduce cost and complexity of using multiple independent charging systems.
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Citations
20 Claims
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1. A charging station, comprising:
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a symmetric conversion stage, the symmetric conversion stage converting a first waveform to a second waveform according to symmetric conversion parameters set by a system controller, wherein the second waveform is accessible by a first charging interface compatible with the second waveform; and an asymmetric conversion stage, the asymmetric conversion stage converting the second waveform to a third waveform according to asymmetric conversion parameters, wherein the third waveform is accessible by a second charging interface compatible with the third waveform, wherein the system controller sets the symmetric conversion parameters in such a manner that; when a first charging protocol is requested at the first charging interface, the second waveform complies with the first charging protocol, and when a second charging protocol is requested at the second charging interface, the third waveform complies with the second charging protocol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A multi-mode electric vehicle (EV) charging system, comprising:
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a voltage source; a DC-DC converter receiving a source voltage from the voltage source, the DC-DC converter capable of converting the source voltage to a DC bus voltage; a DC charging interface receiving the DC bus voltage, the DC charging interface complying with a DC charging protocol for an EV; a DC-AC inverter receiving the DC bus voltage and capable of converting the DC bus voltage to an AC output voltage; and an AC charging interface receiving the AC output voltage, the AC charging interface complying with an AC charging protocol for an EV. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method for providing multiple electric vehicle charging protocols from an electric vehicle charging station inverter system, the inverter system comprising a DC-DC converter providing output to a DC-AC inverter and a DC charging interface, the DC-AC inverter providing output to an AC charging interface, the method comprising:
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determining whether charging will be provided from the DC charging interface according to a DC charging protocol or the AC charging interface according to an AC charging protocol; and when a DC charging interface is determined, setting the DC-DC converter to convert a DC signal into a bus signal complying with a DC charging protocol, converting an input DC signal into the bus signal using the DC-DC converter, and providing the bus signal to the DC charging interface in compliance with the DC charging protocol; and when an AC charging interface is determined, setting the DC-DC converter to convert a DC signal into a bus signal, setting the DC-AC inverter to convert the bus signal to an AC signal complying with an AC charging protocol, converting an input DC signal into the bus signal using the DC-DC converter, converting the bus signal into the AC signal using the AC-DC inverter, and providing the AC signal to the AC charging interface in compliance with the AC charging protocol. - View Dependent Claims (19, 20)
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Specification