Method and apparatus for charging or discharging and electrical device by controlling switches
First Claim
1. An apparatus for charging and discharging an electrical device in a vehicle, the apparatus comprising:
- a first power source configured to provide low voltage (LV) energy;
a switch for enabling and disabling the first power source;
a second power source configured to provide high voltage (HV) energy for charging the electrical device;
a first contactor comprising a first switch and a first winding, the first winding being connected to the first power source for receiving the LV energy and the first switch being connected to the second power source for receiving the HV energy, the first contactor being configured to enable the second power source to provide the HV energy to the electrical device for charging thereof in response to the switch enabling the first power source; and
a second contactor comprising a second switch and a second winding, the second winding being connected in series with the first winding and in series with the first power source for receiving the LV energy and the second switch being connected to the second power source for receiving the HV energy, wherein the switch is connected between the first power source and at least one of the first winding and the second winding such that the second contactor is in an open state in response to the switch enabling the first power source.
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Accused Products
Abstract
An apparatus for charging and discharging an electrical device in a vehicle is provided with a first power source for providing low voltage energy and a second power source for providing high voltage energy. A switch enables/disables the first power source. A first contactor includes a first winding connected to the first power source and a first switch connected to the second power source. The first contactor enables the second power source to provide the HV energy for charging the electrical device in response to the switch enabling the first power source. A second contactor includes a second winding connected to the first power source for receiving the LV energy and a second switch connected to the second power source for receiving the HV energy. The second contactor is in an open state in response to the switch enabling the first power source.
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Citations
15 Claims
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1. An apparatus for charging and discharging an electrical device in a vehicle, the apparatus comprising:
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a first power source configured to provide low voltage (LV) energy; a switch for enabling and disabling the first power source; a second power source configured to provide high voltage (HV) energy for charging the electrical device; a first contactor comprising a first switch and a first winding, the first winding being connected to the first power source for receiving the LV energy and the first switch being connected to the second power source for receiving the HV energy, the first contactor being configured to enable the second power source to provide the HV energy to the electrical device for charging thereof in response to the switch enabling the first power source; and a second contactor comprising a second switch and a second winding, the second winding being connected in series with the first winding and in series with the first power source for receiving the LV energy and the second switch being connected to the second power source for receiving the HV energy, wherein the switch is connected between the first power source and at least one of the first winding and the second winding such that the second contactor is in an open state in response to the switch enabling the first power source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus comprising:
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a low voltage circuit including a first power source for providing low voltage, a first winding connected in series with the first power source, a second winding connected in series with the first winding, and a switch connected in series between the first power source and at least one of the first winding and the second winding for enabling and disabling the first power source; a high voltage circuit including a second power source for providing high voltage, a capacitor connected in parallel with the second power source, a first switch connected in series between the second power source and the capacitor and coupled to the first winding such that the first switch closes to provide high voltage to the capacitor in response to the switch enabling the first power source; and a discharge circuit including a second switch connected in series with a resistive element, the discharge circuit being connected in parallel with the second power source and with the capacitor, the second switch being coupled to the second winding such that the second switch opens to disable the discharge circuit in response to the switch enabling the first power source. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification