Devices, systems, and methods for mitigating vehicle power loss in battery mode
Devices, systems, and methods are provided for mitigating vehicle power loss. A vehicle charging system may include a power supply, and a voltage control device associated with receiving first voltage from the power supply, providing the first voltage to a hybrid vehicle or a battery electric vehicle, and blocking a second voltage from the hybrid vehicle or the battery electric vehicle, wherein the vehicle charging system is external to the hybrid vehicle or the battery electric vehicle.
1. A vehicle voltage system comprising:
a first power supply; and
a voltage control device configured to:
receive a first voltage from the first power supply;
provide the first voltage to a low-voltage battery of a battery hybrid electric vehicle;
block a second voltage from the low-voltage battery of the battery hybrid electric vehicle, wherein the second voltage is received by the low-voltage battery from a direct current/direct current (DC/DC) converter operative with a high-voltage battery of the battery hybrid electric vehicle; and
wherein the vehicle voltage system is external to the battery hybrid electric vehicle.
2. The vehicle voltage system of claim 1 , wherein the voltage control device is further configured to provide the first voltage to the low-voltage battery of the battery hybrid electric vehicle when a second power supply of the battery hybrid electric vehicle is off and when a third voltage of the low-voltage battery of the battery hybrid electric vehicle is below a threshold voltage.
3. The vehicle voltage system of claim 1 , wherein the voltage control device is further configured to block the second voltage when a second power supply of the battery hybrid electric vehicle is on.
4. The vehicle voltage system of claim 1 , wherein the voltage control device comprises a diode.
5. The vehicle voltage system of claim 1 , wherein the voltage control device comprises a relay monitor circuit.
6. The vehicle voltage system of claim 1 , wherein the first power supply is a twelve volt power supply.
7. The vehicle voltage system of claim 1 , further comprising a communications interface associated with sending data to a device external to the vehicle voltage system.
8. A method of controlling power for a battery hybrid electric vehicle, the method comprising:
providing, by a first power supply of a vehicle voltage system external to the battery hybrid electric vehicle, a first voltage to a voltage control device of the vehicle voltage system;
receiving, by the voltage control device, the first voltage from the first power supply;
providing, by the voltage control device, the first voltage to a low-voltage battery of the battery hybrid electric vehicle when a second power supply of the battery hybrid electric vehicle is off and when a second voltage of the low-voltage battery of the battery hybrid electric vehicle is below a threshold voltage;
blocking, by the voltage control device, a third voltage from the battery hybrid electric vehicle when the second power supply of the battery hybrid electric vehicle is on; and
wherein the third voltage is received by the low-voltage battery from a direct current/direct current (DC/DC) converter operative with a high-voltage battery of the battery hybrid electric vehicle.
9. The method of claim 8 , further comprising detecting, by the voltage control device, that the second voltage is below the threshold voltage, wherein providing the first voltage to the low-powered battery of the battery hybrid electric vehicle is based on the detection.
10. The method of claim 8 , further comprising sending, using a communications interface of the vehicle voltage system, data to a device external to the vehicle voltage system.
11. The method of claim 8 , wherein the voltage control device comprises a diode.
12. The method of claim 8 , wherein the voltage control device comprises a relay monitor circuit.
13. The method of claim 8 , wherein the first power supply is a twelve volt power supply.
14. A vehicle voltage system comprising:
a battery hybrid electric vehicle;
a first power supply external to the battery hybrid electric vehicle; and
a voltage control device external to the battery hybrid electric vehicle, the voltage control device configured to:
receive first voltage from the first power supply,
provide the first voltage to a low-voltage battery of the battery hybrid electric vehicle;
block a second voltage from the low-voltage battery of the battery hybrid electric vehicle, wherein the second voltage is received by the low-voltage battery from a direct current/direct current (DC/DC) converter operative with a high-voltage battery of the battery hybrid electric vehicle; and
wherein the vehicle voltage system is external to the battery hybrid electric vehicle.
15. The vehicle voltage system of claim 14 , wherein the voltage control device is further configured to provide the first voltage to the low-voltage battery of the battery hybrid electric vehicle when a second power supply of the battery hybrid electric vehicle is off and when a third voltage of the low-voltage battery of the battery hybrid electric vehicle is below a threshold voltage.
16. The vehicle voltage system of claim 14 , wherein the voltage control device is further configured to block the second voltage when a second power supply of the battery hybrid electric vehicle is on.
17. The vehicle voltage system of claim 14 , wherein the voltage control device comprises a diode.
18. The vehicle voltage system of claim 14 , wherein the voltage control device comprises a relay monitor circuit.
19. The vehicle voltage system of claim 14 , wherein the first power supply is a twelve volt power supply.
20. The vehicle voltage system of claim 14 , further comprising a communications interface associated with sending data to a device external to the vehicle voltage system.