Wireless power supply systems for a vehicle

1. A vehicle comprising:

a traction motor;

a receiving coil configured to receive a power wirelessly; and

a controller configured to execute a diagnostic test of a rotational position sensor of the traction motor, wherein when the receiving coil is positioned with respect to a supplying coil in ground equipment, the controller is configured to adjust a diagnostic strictness of the diagnostic test to be less strict so that a number of errors produced when the receiving coil is positioned with respect to the supplying coil in the ground equipment becomes fewer than a number of errors produced when the receiving coil is not positioned with respect to the supplying coil in the ground equipment.

2. The vehicle according to claim 1 , wherein the diagnostic strictness being less strict refers to a stopping of the diagnostic test.

3. The vehicle according to claim 2 , wherein during the positioning, the controller switches the diagnostic strictness between a less strict state in which the diagnostic strictness is less strict and a normal state in which the diagnostic strictness if not less strict, according to a gear shift position or relative positions of the supplying coil and the receiving coil.

4. The vehicle according to claim 2 , further comprising:

a traction driving unit different from the traction motor; and

a drive controller configured to, when the diagnostic strictness is adjusted to be less strict, cause the vehicle to travel by stopping a driving of the traction motor while also enabling a driving of the different traction driving unit.

5. The vehicle according to claim 2 , wherein

the traction motor comprises a front-wheel motor that drives front wheels and a rear-wheel motor that drives rear wheels,

the controller executes a diagnostic test of a rotational position sensor of the front-wheel motor and a diagnostic test of a rotational position sensor of the rear-wheel motor, and

during the positioning, the controller switches a diagnostic strictness of either one of the diagnostic test of the rotational position sensor of the front-wheel motor and the diagnostic test of the rotational position sensor of the rear-wheel motor between a less strict state in which the diagnostic strictness is less strict and a normal state in which the diagnostic strictness if not less strict, according to a gear shift position or relative positions of the supplying coil and the receiving coil.

6. The vehicle according to claim 5 , further comprising:

a drive controller configured to control a driving of the front-wheel motor and the rear-wheel motor, wherein

the drive controller stops the driving of one of the front-wheel motor and the rear-wheel motor corresponding to which of the diagnostic test of the rotational position sensor of the front-wheel motor and the diagnostic test of the rotational position sensor of the rear-wheel motor has been switched to the less strict state, while also enabling another of the front-wheel motor and the rear-wheel motor corresponding to which of the diagnostic test of the rotational position sensor of the front-wheel motor and the diagnostic test of the rotational position sensor of the rear-wheel motor has not been switched to the less strict state.

7. The vehicle according to claim 1 , wherein during the positioning, the controller switches the diagnostic strictness between a less strict state in which the diagnostic strictness is less strict and a normal state in which the diagnostic strictness if not less strict, according to a gear shift position or relative positions of the supplying coil and the receiving coil.

8. The vehicle according to claim 1 , further comprising:

a traction driving unit different from the traction motor; and

a drive controller configured to, when the diagnostic strictness is adjusted to be less strict, cause the vehicle to travel by stopping a driving of the traction motor while also enabling a driving of the different traction driving unit.

9. The vehicle according to claim 1 , wherein

the traction motor comprises a front-wheel motor that drives front wheels and a rear-wheel motor that drives rear wheels,

the controller executes a diagnostic test of a rotational position sensor of the front-wheel motor and a diagnostic test of a rotational position sensor of the rear-wheel motor, and

during the positioning, the controller switches a diagnostic strictness of either one of the diagnostic test of the rotational position sensor of the front-wheel motor and the diagnostic test of the rotational position sensor of the rear-wheel motor between a less strict state in which the diagnostic strictness is less strict and a normal state in which the diagnostic strictness if not less strict, according to a gear shift position or relative positions of the supplying coil and the receiving coil.

10. The vehicle according to claim 9 , further comprising:

a drive controller configured to control a driving of the front-wheel motor and the rear-wheel motor, wherein

the drive controller stops the driving of one of the front-wheel motor and the rear-wheel motor corresponding to which of the diagnostic test of the rotational position sensor of the front-wheel motor and the diagnostic test of the rotational position sensor of the rear-wheel motor has been switched to the less strict state, while also enabling another of the front-wheel motor and the rear-wheel motor corresponding to which of the diagnostic test of the rotational position sensor of the front-wheel motor and the diagnostic test of the rotational position sensor of the rear-wheel motor has not been switched to the less strict state.

11. The vehicle according to claim 1 , further comprising:

a vehicle mode controller configured to cause the vehicle to transition to a failsafe mode on a basis of any error information, wherein

the vehicle mode controller changes a pattern of a transition to a failsafe mode based on an error determination by the diagnostic test, on a basis of a trigger for starting the positioning.

12. The vehicle according to claim 11 , wherein the vehicle mode controller prohibits a transition to a failsafe mode that prohibits a travel based on an error determination by the diagnostic test, on the basis of the trigger for starting the positioning.

13. The vehicle according to claim 12 , wherein

the traction motor comprises a front-wheel motor that drives front wheels and a rear-wheel motor that drives rear wheels, and

the vehicle mode controller changes a pattern of a transition to a failsafe mode based on a diagnostic result of the rotational position sensor in one of the front-wheel motor and the rear-wheel motor, according to a gear shift position or relative positions of the receiving coil and the supplying coil.

14. The vehicle according to claim 11 , wherein

the traction motor comprises a front-wheel motor that drives front wheels and a rear-wheel motor that drives rear wheels, and

the vehicle mode controller changes a pattern of a transition to a failsafe mode based on a diagnostic result of the rotational position sensor in one of the front-wheel motor and the rear-wheel motor, according to a gear shift position or relative positions of the receiving coil and the supplying coil.

15. A vehicle comprising:

a traction motor;

a receiving coil configured to receive a power wirelessly; and

circuitry configured to

execute a diagnostic test of a rotational position sensor of the traction motor, and

when the receiving coil is positioned with respect to a supplying coil in ground equipment, adjust a diagnostic strictness of the diagnostic test to be less strict so that a number of errors produced when the receiving coil is positioned with respect to the supplying coil in the ground equipment becomes fewer than a number of errors produced when the receiving coil is not positioned with respect to the supplying coil in the ground equipment.