System and method for exporting a vehicle on-board AC power to a second vehicle
View Patent ↗A method for enabling a truck having an electrical system that can accept shore power to be supplied with shore power is provided. While the truck is stationary, an electric cable is connected between the truck's electrical system and an APU of a second truck that not only can deliver AC electricity to electrical loads in the second truck and also can export AC electricity as shore power. A condition precedent to enabling the APU to export AC electricity to the truck that can accept shore power is confirmed via a communication link between the two trucks. Upon confirmation of the condition, the APU is enabled to export AC electricity to the truck that can accept shore power.
1. A method for enabling a first truck having an electrical system that can accept shore power to be supplied with shore power, the method comprising the steps of:
parking the first truck, and while the first truck is stationary, connecting an electric cable between an electrical system and an APU of a second truck that not only can deliver AC electricity to electrical loads in the second truck but also can export AC electricity as shore power;
confirming, via a communication link between the first truck and the second truck, a condition precedent to enabling the APU to export AC electricity to the first truck that can accept shore power; and
upon confirmation of the condition precedent, enabling the APU to export AC electricity to the first truck that can accept shore power.
2. The method as set forth in claim 1 in which the step of confirming, via a communication link between the first truck and the second truck, the condition precedent to enabling the APU to export AC electricity to the first truck that can accept shore power comprises confirming that each of the first truck and the second truck are stationary by a device in each of the first truck and the second truck disclosing that a respective truck is stationary.
3. The method as set forth in claim 2 in which the step of confirming that both the first truck and the second truck are stationary by the device in each of the first truck and the second truck disclosing that the respective truck is stationary comprises confirming that a park brake in each of the first truck and the second truck is in an applied condition.
4. The method as set forth in claim 3 in which the step of confirming, via a communication link between the first truck and the second truck, the condition precedent to enabling the APU to export AC electricity to the first truck that can accept shore power includes confirming that a transmission in a power train of the first truck is in a disengaged condition.
5. The method as set forth in claim 1 in which the step of confirming, via a communication link between the first truck and the second truck, the condition precedent to enabling the APU to export AC electricity to the first truck that can accept shore power comprises confirming that a transmission in a power train of the second truck is in a disengaged condition.
6. The method as set forth in claim 1 further comprising the step of:
measuring a quantity of electric shore power exported by the second truck.
7. The method as set forth in claim 6 further comprising the steps of:
calculating a price for the quantity of electric shore power exported by the second truck; and
billing the price to an owner/operator of the first truck.
8. The method as set forth in claim 1 in which the step of confirming, via a communication link between the first truck and the second truck, the condition precedent to enabling the APU to export AC electricity to the first truck that can accept shore power comprises a processor in second truck reading confirming data on a data link in the electrical system of the first truck.
9. A system for supplying AC electricity to an electrical system of a first stationary truck whose power train engine is shut off from a second stationary truck whose power train engine is also shut off, the system comprising:
an electric cable for connecting the electrical system of the first stationary truck with an APU on the second stationary truck that is delivering AC electricity to an electrical system of the second stationary truck to enable the APU to concurrently deliver AC electricity to the first stationary truck; and
a data communication link between the electrical system of the first stationary truck and the electrical system of the second stationary truck for confirming a condition precedent to enabling the APU to export AC electricity to the first stationary truck, and for enabling the APU to export AC electricity to the first stationary truck upon confirmation of the condition precedent.
10. The system as set forth in claim 9 in which the condition precedent includes a device in both the first stationary truck and the second stationary truck disclosing that each of the first stationary truck and the second stationary truck, respectively, are stationary.
11. The system as set forth in claim 10 in which the device comprises a park brake in each of the first stationary truck and the second stationary truck.
12. The system as set forth in claim 11 in which the condition precedent further includes a transmission in a power train in each of the first stationary truck and the second stationary truck in a disengaged condition.
13. The system as set forth in claim 9 in which the second stationary truck comprises a device for measuring a quantity of electric shore power exported by the second stationary truck to the first stationary truck.
14. The system as set forth in claim 9 in which the data communication link is through the electric cable.