US 10,766,373 B2Granted

Power-feeding device

AssigneePanasonic Intellectual Property Management Co., Ltd.

InventorsTsuyoshi Nishio, Osamu Ohashi, Noriaki Asaoka, Masayoshi Koizumi

Life of this patent

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Abstract

To minimize excessively high output or increases in magnetic-flux leakage by controlling power feeding on the power-feeding side if an unforeseen situation occurs. This power-feeding device (100) feeds power to an external power-receiving device (150) in a contactless manner. A power-feeding coil (103) uses electromagnetic power to feed electrical power to a power-receiving coil (154) in the power-receiving device (150). While power is being fed from said power-feeding coil (103), a power-feeding-side control unit (107) determines the amount of displacement of the power-feeding coil (103) and, on the basis of the determined displacement amount, controls the amount of electrical power being fed.

Claims7

Dependent claims

A power supply apparatus comprising:

a power supply coil that supplies power to a power receiving coil of a power receiving section in a wireless manner using an electromagnetic force;
a controller that controls an amount of power supply that changes a magnetic coupling between the power supply coil and the power receiving coil based on an amount of displacement of a positional change of the power supply coil with respect to the power receiving coil when power is supplied from the power supply coil;
and
a detection section that detects the displacement of the positional change of the power supply coil,
wherein the controller calculates the amount of displacement from an accumulation of the displacement of the positional change of the power supply coil detected by the detection section for a predetermined time, and when the amount of displacement during power supplying from the power supply coil is equal to or greater than a threshold, the controller reduces the amount of power supply to a lower amount than a case where the amount of displacement during power supplying from the power supply coil is lower than the threshold.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/456,911Filed 28 Jun 2019 · continuation
Priority: JP 2013-06008022 Mar 2013
Published: US 2019/0319497 A117 Oct 2019
Granted: 8 Sep 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

B60L 53/122
Inductive energy transfer: circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
B60L 53/38
Means for automatic or assisted adjustment of the relative position of charging devices and vehicles: specially adapted for charging by inductive…
H02J 7/42
Characterised by the exchange of charge or discharge related data: with electronic devices having internal batteries, e.g. mobile phones
H02J 50/10
Circuit arrangements or systems for wireless supply or distribution of electric power: using inductive coupling

Family

PCT/JP2014/001606Parent of this continuation · filed 20 Mar 2014
Application15/949,476Parent of this continuation · filed 10 Apr 2018
US 9,973,040 B2Parent of this continuation · filed 15 May 2018
US 2019/0319497 A1Pre-grant publication · published 17 Oct 2019
US 10,381,885 B2Parent of this continuation
Application14/778,425Parent of this continuation
US 2016/0276872 A1Published application
US 2018/0226837 A1Published application
US 10,766,373 B2This patent

From the US filing history. Foreign family members aren’t listed.

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