ONBOARD BATTERY CHARGING SYSTEM
First Claim
1. A battery charging system comprising:
- an isolation device comprising;
an AC input terminal structured to receive AC power;
an AC output terminal structured to provide AC power received with the AC input terminal;
two DC output terminals structured to transmit DC power;
a first portion of a detection circuit including a first sensor and a first resistor coupled in series, the first resistor being coupled in parallel to the two DC output terminals; and
a first controller in communication with the first sensor and structured to selectively isolate the AC input terminal of the isolation device from the AC output terminal of the isolation device; and
an electric vehicle charger comprising;
an AC input terminal structured to be coupled to the AC output terminal of the isolation device;
two DC input terminals structured to be coupled to the two DC output terminals of the isolation device; and
a second portion of the detection circuit including a second sensor and a second resistor coupled in series, the second resistor being coupled in parallel to the two DC input terminals,wherein the first controller is structured to isolate the AC input terminal of the isolation device from the AC output terminal of the isolation device when the two DC input terminals of the electric vehicle charger are not coupled to the two DC output terminals of the isolation device.
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Accused Products
Abstract
Unique systems, methods, techniques and apparatuses of onboard battery charger systems are disclosed. One exemplary embodiment is a battery charging system comprising an isolation device and an electric vehicle charger. The isolation device includes an AC input terminal; an AC output terminal; two DC output terminals; a first portion of a detection circuit including a first sensor and a first resistor coupled in series; and a first controller. The charger includes an AC input terminal; two DC input terminals; and a second portion of the detection circuit including a second sensor and a second resistor coupled in series. The first controller is structured to isolate the AC input terminal of the isolation device from the AC output terminal of the isolation device when the two DC input terminals of the electric vehicle charger are not coupled to the two DC output terminals of the isolation device.
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Citations
20 Claims
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1. A battery charging system comprising:
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an isolation device comprising; an AC input terminal structured to receive AC power; an AC output terminal structured to provide AC power received with the AC input terminal; two DC output terminals structured to transmit DC power; a first portion of a detection circuit including a first sensor and a first resistor coupled in series, the first resistor being coupled in parallel to the two DC output terminals; and a first controller in communication with the first sensor and structured to selectively isolate the AC input terminal of the isolation device from the AC output terminal of the isolation device; and an electric vehicle charger comprising; an AC input terminal structured to be coupled to the AC output terminal of the isolation device; two DC input terminals structured to be coupled to the two DC output terminals of the isolation device; and a second portion of the detection circuit including a second sensor and a second resistor coupled in series, the second resistor being coupled in parallel to the two DC input terminals, wherein the first controller is structured to isolate the AC input terminal of the isolation device from the AC output terminal of the isolation device when the two DC input terminals of the electric vehicle charger are not coupled to the two DC output terminals of the isolation device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A battery charging system comprising:
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an isolation device structured to receive AC power and selectively provide AC power; an electric vehicle battery charger coupled to a battery, the battery charger structured to be coupled to the isolation device and receive AC power from the isolation device; and a detection circuit including a first portion having a first current sensor and a second portion having a second current sensor, the first portion and second portion being structured to be coupled together when the battery charger is coupled to the isolation device, wherein the first portion of the detection circuit is located within the isolation device and the second portion of the detection circuit is located within the electric vehicle, wherein the detection circuit is structured such that the second current sensor measures a first current value when the isolation device is not receiving AC power but the isolation device is coupled to the battery charger, and wherein the detection circuit is structured such that the second current sensor measures a second current value when the isolation device is receiving AC power and the isolation device is coupled to the battery charger. - View Dependent Claims (13, 14, 15, 16, 17, 19, 20)
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18. A method for charging the battery of an electric vehicle comprising:
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operating an isolation device including an AC input terminal;
an AC output terminal;
a DC output terminal;
a first detection circuit including a first DC power source, a first current sensor, a first diode, and a first resistor coupled in series; and
a first controller structured to selectively couple the AC input terminal and the AC output terminal;operating an onboard battery charger including an AC input terminal;
a second detection circuit including a DC second power source, a second current sensor, a second diode, and a second resistor coupled in series; and
a second controller structured to control the first controller so as to selectively isolate the AC input terminal and the AC output terminal of the isolation device;operating the first detection circuit so as to measure the current flowing from the DC first power source to the first diode and transmitting the current measurement to the first controller; determining with the first controller whether the isolation device is coupled to an electric vehicle charger using the current measurement from the current sensor; and Providing AC power to the electric vehicle charger in response to determining the isolation device is coupled to an electric vehicle charger.
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Specification