System and method for electric vehicle charging and security
In one embodiment, an apparatus includes a power source and a moveable charging arm coupled to the power source and comprising a charging plate for contact with an electric vehicle contact plate. The charging arm is operable to transmit direct current (DC) pulse power with testing performed between high voltage pulses directly from the charging plate to the electric vehicle contact plate to charge one or more batteries at the electric vehicle. A method for charging the electric vehicle is also disclosed herein.
1. An apparatus comprising:
a power source; and
a moveable charging arm coupled to the power source and comprising a charging plate for contact with an electric vehicle contact plate;
wherein the charging arm is operable to transmit direct current (DC) pulse power with at least one of line-to-line and line-to-ground testing performed between high voltage pulses directly from the charging plate to the electric vehicle contact plate to charge one or more batteries at the electric vehicle.
2. The apparatus of claim 1 wherein the DC pulse power comprises multi-phase pulse power.
3. The apparatus of claim 2 wherein the charging arm comprises a plurality of charging plates for the multi-phase pulse power.
4. The apparatus of claim 1 further comprising a sensor for automatically positioning the charging arm for contact with the electric vehicle contact plate.
5. The apparatus of claim 1 further comprising a cleaning arm for cleaning the electric vehicle contact plate prior to contact with the charging arm.
6. The apparatus of claim 1 wherein the charging plate comprises a wear sensor.
7. The apparatus of claim 1 further comprising a second movable charging arm for contact with a second electric vehicle contact plate positioned on an opposite side of the electric vehicle.
8. The apparatus of claim 1 wherein the charging plate comprises a convex surface for contact with a contact area on the charging plate.
9. The apparatus of claim 1 wherein the power source comprises a power converter for converting alternating current (AC) power to the DC pulse power.
10. The apparatus of claim 1 wherein the charging arm transmits or receives communications along with the DC pulse power.
11. An electric vehicle system comprising:
a power system for charging a battery installed in an electric vehicle; and
a contact plate for positioning on an exterior surface of the electric vehicle and transmitting power to the power system;
wherein the contact plate is configured for receiving pulse power comprising a plurality of high voltage pulses with at least one of line-to-line and line-to-ground safety testing between said high voltage pulses, directly from a charging plate coupled to a charging arm at a charging station and transmitting the pulse power to the power system.
12. The electric vehicle system of claim 11 further comprising a communications system comprising a server and configured for receiving data from or transmitting the data to the power system for download or upload at the contact plate.
13. The electric vehicle system of claim 12 further comprising a security system for preventing unauthorized access to one or more components of the power system or the communications system.
14. The electric vehicle system of claim 13 wherein at least one of the components of the communications system comprises a first access mode accessible from a first key and a second access mode accessible from a second key.
15. The electric vehicle system of claim 14 wherein at least one of said first key or said second key comprises a biometric device.
16. The electric vehicle system of claim 11 wherein the contact plate comprises a convex surface for contact with the charging plate of the charging arm.
17. The electric vehicle system of claim 11 wherein the pulse power comprises multi-phase pulse power.
18. The electric vehicle system of claim 17 wherein the contact plate comprises a plurality of contact points for the multi-phase pulse power.
19. The electric vehicle system of claim 11 further comprising a communications device for transmitting data to the charging station for use in automatically positioning the charging arm.
20. The electric vehicle system of claim 11 further comprising a second contact plate, wherein each of the contact plates are configured for attachment to opposite sides of the electric vehicle.
21. The electric vehicle system of claim 11 further comprising an electric vehicle charging plate positioned at a front or rear of the electric vehicle for contact with another electric vehicle charging plate on another electric vehicle, wherein the pulse power is transmitted between the electric vehicles through the electric vehicle charging plates.
22. A method comprising:
identifying an electric vehicle in a charging station;
automatically positioning a charging arm in contact with a contact plate on an exterior surface of the electric vehicle;
verifying compatibility of a power system at the electric vehicle with fault managed power;
performing authentication between the charging station and the electric vehicle; and
charging a battery at the electric vehicle with the fault managed power including at least one of line-to-line and line-to-ground safety testing between high voltage pulses of direct current (DC) pulse power.
23. The method of claim 22 further comprising extending a cleaning arm to clean the contact plate on the electric vehicle before the charging arm is in contact with the contact plate.
24. The method of claim 22 wherein the fault managed power comprises multi-phase direct current (DC) pulse power.