MOBILE TERMINAL CHARGING DEVICE AND VEHICLE EQUIPPED WITH SAME

• US 20160261130A1
• Filed: 10/30/2014
• Published: 09/08/2016
• Est. Priority Date: 11/01/2013
• Status: Active Grant

• Current Assignee: Panasonic Automotive Systems Company of America (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: SEKI, TOSHIAKI, YAMANISHI, YUTO, HATAKEYAMA, KEN
• Granted Patent: US 9,985,463 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence

Abstract

A controller of a mobile terminal charging device compares a resonance frequency or a resonance voltage of each of a plurality of foreign object detection coils with a reference resonance frequency or a reference resonance voltage of each foreign object detection coil, stored in a memory, corresponding to a position of a charging coil. The controller performs a safety operation on the basis of a comparison result.

Claims

1. A mobile terminal charging device comprising:

a support plate in which a mobile terminal placement portion is provided on a front surface side of the support plate;

a charging coil that is movably disposed in a state of opposing a rear surface side of the support plate;

a driver that can move the charging coil on the rear surface side of the support plate;

a controller that is connected to the charging coil and the driver;

a memory that is connected to the controller; and

a plurality of foreign object detection coils that are provided on the support plate and are connected to the controller,

wherein the memory stores a reference resonance frequency or a reference resonance voltage of each of the plurality of foreign object detection coils for each location where the charging coil is present, and

wherein the controller compares a resonance frequency or a resonance voltage of each of the plurality of foreign object detection coils with the reference resonance frequency or the reference resonance voltage corresponding to a position of the charging coil, and performs a safety operation on the basis of a comparison result.

2. The mobile terminal charging device of claim 1,

wherein, in a case where any one of resonance frequencies of the plurality of foreign object detection coils is higher than the reference resonance frequency, stored in the memory, for each location where the charging coil is present, or a resonance voltage detected by any one of the plurality of foreign object detection coils is lower than the reference resonance voltage, stored in the memory, for each location where the charging coil is present, the controller performs the safety operation.

3. The mobile terminal charging device of claim 1,

wherein the plurality of foreign object detection coils are provided on front and rear surfaces of the support plate.

4. The mobile terminal charging device of claim 1, further comprising:

an alarm that issues a warning in the safety operation.

5. The mobile terminal charging device of claim 4,

wherein conduction of the charging coil is stopped during the safety operation.

6. A vehicle comprising:

a vehicle interior; and

the mobile terminal charging device according to disposed in the vehicle interior so that the mobile terminal placement portion faces upward.

7. The vehicle according to claim 6, comprising

a guard portion along an outer periphery of the support plate, the guard portion protruding upward beyond the support plate.