VEHICLE

• US 20190152323A1
• Filed: 10/17/2018
• Published: 05/23/2019
• Est. Priority Date: 11/22/2017
• Status: Active Grant

• Current Assignee: Subaru Corp.
• Original Assignee: Subaru Corp.
• Inventors: MORIYA, Fumiyuki, OKAMOTO, Tomofumi, HORIE, Takuya
• Granted Patent: US 10,836,260 B2
• Time in Patent Office: Days
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 15/2054 by controlling transmissions or clutches
• CPC Class Codes: B60L 2240/42 related to electric machines
• CPC Class Codes: B60L 2260/28 Four wheel or all wheel drive
• CPC Class Codes: B60L 2260/32 Auto pilot mode
• CPC Class Codes: B60L 3/0038 relating to sensors
• CPC Class Codes: B60L 3/0061 relating to electrical machines
• CPC Class Codes: B60L 3/0092 with use of redundant elements for safety purposes
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B60L 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/37 using optical position determination, e.g. using cameras
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

A vehicle includes: a traction motor; a diagnostic module; a receiving coil; and a controller. The diagnostic module executes a diagnostic test of a rotational position sensor of the traction motor. The receiving coil receives a power wirelessly. The controller switches the diagnostic module to a state that is less likely to determine an error than normal when the receiving coil is positioned with respect to a supplying coil in a ground equipment.

Claims

1. A vehicle comprising:

a traction motor;

a diagnostic module configured to execute a diagnostic test of a rotational position sensor of the traction motor;

a receiving coil configured to receive a power wirelessly; and

a controller configured to switch the diagnostic module to a state that is less likely to determine an error than normal when the receiving coil is positioned with respect to a supplying coil in a ground equipment.

2. The vehicle according to claim 1, wherein

the state that is less likely to determine an error is a stopping of the diagnostic test.

3. The vehicle according to claim 1, wherein

during the positioning, the controller switches the diagnostic module between a normal state and the state that is less likely to determine an error than normal, according to a gear shift position or relative positions of the supplying coil and the receiving coil.

4. The vehicle according to claim 2, wherein

during the positioning, the controller switches the diagnostic module between a normal state and the state that is less likely to determine an error than normal, according to a gear shift position or relative positions of the supplying coil and the receiving coil.

5. 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 module is switched to the state that is less likely to determine an error than normal, cause the vehicle to travel by stopping a driving of the traction motor while also enabling a driving of the different traction driving unit.

6. 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 module is switched to the state that is less likely to determine an error than normal, cause the vehicle to travel by stopping a driving of the traction motor while also enabling a driving of the different traction driving unit.

7. 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 diagnostic module comprises a first diagnostic module that executes a diagnostic test of a rotational position sensor of the front-wheel motor, and a second diagnostic module that executes a diagnostic text of a rotational position sensor of the rear-wheel motor, and

during the positioning, the controller switches either one of the first diagnostic module and the second diagnostic module between a normal state and the state that is less likely to determine an error than normal, according to a gear shift position or relative positions of the supplying coil and the receiving coil.

8. 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 diagnostic module comprises a first diagnostic module that executes a diagnostic test of a rotational position sensor of the front-wheel motor, and a second diagnostic module that executes a diagnostic text of a rotational position sensor of the rear-wheel motor, and

during the positioning, the controller switches either one of the first diagnostic module and the second diagnostic module between a normal state and the state that is less likely to determine an error than normal, according to a gear shift position or relative positions of the supplying coil and the receiving coil.

9. The vehicle according to claim 7, 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 first diagnostic module and the second diagnostic module has been switched to the state that is less likely to determine an error than normal, while also enabling another of the front-wheel motor and the rear-wheel motor corresponding to which of the first diagnostic module and the second diagnostic module has not been switched to the state that is less likely to determine an error than normal.

10. The vehicle according to claim 8, 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 first diagnostic module and the second diagnostic module has been switched to the state that is less likely to determine an error than normal, while also enabling another of the front-wheel motor and the rear-wheel motor corresponding to which of the first diagnostic module and the second diagnostic module has not been switched to the state that is less likely to determine an error than normal.

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 module, 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 module, on the basis of the trigger for starting the positioning.

13. 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.

14. 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.

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

switch the diagnostic module to a state that is less likely to determine an error than normal when the receiving coil is positioned with respect to a supplying coil in a ground equipment.