Method and apparatus of charging battery of vehicle using regenerative braking
Provided is a method and apparatus of charging a battery of a vehicle using a regenerative braking. A device for charging a second vehicle using a first vehicle includes a roller apparatus configured to transmit, to the second vehicle, a rotational force generated in response to a rotation of a wheel of the first vehicle; a controller configured to control a gear ratio of the roller apparatus; and a transmission configured to change the gear ratio in response to an instruction of the controller.
1. A device for charging a second vehicle using a first vehicle, the device comprising:
a roller apparatus configured to transmit, to the second vehicle, a rotational force generated in response to a rotation of a wheel of the first vehicle;
a controller configured to control a gear ratio of the roller apparatus; and
a transmission configured to change the gear ratio in response to an instruction of the controller.
2. The device of claim 1 , wherein the transmission is further configured to be a continuously variable transmission (CVT).
3. The device of claim 1 , wherein the roller apparatus is provided in a hollow coaxial structure.
4. The device of claim 1 , wherein the roller apparatus comprises:
a first roller configured to rotate in response to the rotation of the wheel of the first vehicle; and
a second roller configured to rotate a wheel of the second vehicle.
5. The device of claim 4 , wherein the transmission is provided between the first roller and the second roller.
6. The device of claim 4 , wherein the transmission is further configured to control a gear ratio between the first roller and the second roller.
7. The device of claim 1 , wherein the roller apparatus comprises:
a first inclined plate configured to support the first vehicle; and
a second inclined plate configured to support the second vehicle.
8. The device of claim 1 , wherein the controller is further configured to determine the gear ratio based on a first optimal operation point of the first vehicle and a second optimal operation point of the second vehicle.
9. The device of claim 8 , wherein the controller is further configured to determine the first optimal operation point based on a motor efficiency map of the first vehicle, and to determine the second optimal operation point based on a motor efficiency map of the second vehicle.
10. The device of claim 8 , wherein the controller is further configured to determine a middle-speed-and-middle-torque area of the second vehicle as the second optimal operation point, in response to the second vehicle being a hybrid vehicle or an electric vehicle.
11. A method of charging a second vehicle using a first vehicle, the method comprising:
transmitting a rotational force of the first vehicle to the second vehicle using a roller apparatus; and
controlling a gear ratio of the roller apparatus using a transmission.
12. The method of claim 11 , wherein the transmission is a continuously variable transmission (CVT).
13. The method of claim 11 , wherein the roller apparatus is provided in a hollow coaxial structure.
14. The method of claim 11 , wherein the roller apparatus comprises:
a first roller configured to rotate in response to a rotation of a wheel of the first vehicle; and
a second roller configured to rotate a wheel of the second vehicle.
15. The method of claim 14 , wherein the controlling of the gear ratio comprises controlling a gear ratio between the first roller and the second roller.
16. The method of claim 11 , wherein the roller apparatus comprises:
a first inclined plate configured to support the first vehicle; and
a second inclined plate configured to support the second vehicle.
17. The method of claim 16 , wherein the transmission is provided between the first roller and the second roller.
18. The method of claim 11 , wherein the controlling of the gear ratio comprises determining the gear ratio based on a first optimal operation point of the first vehicle and a second optimal operation point of the second vehicle.
19. The method of claim 18 , wherein the determining of the gear ratio comprises:
determining the first optimal operation point based on a motor efficiency map of the first vehicle; and
determining the second optimal operation point based on a motor efficiency map of the second vehicle.
20. The method of claim 19 , wherein the determining of the gear ratio comprises determining a middle-speed-and-middle-torque area of the second vehicle as the second optimal operation point, in response to the second vehicle being a hybrid vehicle or an electric vehicle.