Parking assistance device

• US 9,937,809 B2
• Filed: 01/28/2015
• Issued: 04/10/2018
• Est. Priority Date: 01/28/2015
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Tsukamoto, Yukinori
• Primary Examiner(s): Jos, Basil T.
• Application Number:
  US15/544,642
• Publication Number:
  US 20180015837A1
• Time in Patent Office: 1,168 Days
• CPC Class Codes: B60L 2240/12 Speed
• CPC Class Codes: B60L 2240/62 Vehicle position
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2250/24 by lever actuation
• CPC Class Codes: B60L 3/00 Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00
• CPC Class Codes: B60L 50/60 using power supplied by batteries in combination with fuel cells B60L50/75
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: B60L 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: B60L 53/66 Data transfer between charging stations and vehicles
• CPC Class Codes: B60R 21/00 Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks safety belts or body harnesses in vehicles B60R22/00; devices, apparatus or methods for life-saving in general A62B; safety devices for propulsion unit control specially adapted for, or arranged in, vehicles B60K28/00; seats constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats, B60N2/42; energy-absorbing arrangements for hand wheels for steering vehicles B62D1/11; energy-absorbing arrangements for vehicle steering columns B62D1/19; harnessing in aircraft B64D25/00
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• 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
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

A parking assistance device for aligning a vehicle coil (11) mounted on a bottom surface of a vehicle (10) with a ground coil (31) installed on a ground, detects a voltage of the vehicle coil (11), detects a change in the voltage detected, notifies a driver of first braking when the change in the voltage detected shifts from an increasing direction to a decreasing direction, and notifies the driver of second braking when the change in the voltage shifts from the decreasing direction to the increasing direction.

Claims

1. A parking assistance device for aligning a vehicle coil mounted on a bottom surface of a vehicle with a ground coil installed on a ground, the parking assistance device comprising:

a voltage sensor configured to detect a voltage of the vehicle coil;

a rate-of-change detector configured to detect a change in the voltage detected by the voltage sensor; and

a notifying controller configured to notify a driver of first braking when the change in the voltage detected by the rate-of-change detector shifts from an increasing direction to a decreasing direction, and notify the driver of second braking when the change in the voltage shifts from the decreasing direction to the increasing direction.

2. The parking assistance device according to claim 1, wherein the notifying controller detects a position of a shift lever and resets the change in the voltage when the position of the shift lever detected is changed.

3. A parking assistance device for aligning a vehicle coil mounted on a bottom surface of a vehicle with a ground coil installed on a ground, the parking assistance device comprising:

a voltage sensor configured to detect a voltage of the vehicle coil;

a rate-of-change detector configured to detect a change in the voltage detected by the voltage sensor; and

an autonomous driving controller configured to implement first autonomous braking when the change in the voltage detected by the rate-of-change detector shifts from an increasing direction to a decreasing direction, and implement second autonomous braking when the change in the voltage shifts from the decreasing direction to the increasing direction.

4. The parking assistance device according to claim 3, wherein the autonomous driving controller detects a position of a shift lever and resets the change in the voltage when the position of the shift lever detected is changed.