Non-contact power feeding system

• US 10,637,297 B2
• Filed: 02/12/2018
• Issued: 04/28/2020
• Est. Priority Date: 11/30/2015
• Status: Active Grant

• Current Assignee: Omron Corporation
• Original Assignee: Omron Corporation
• Inventors: Nakao, Goro
• Primary Examiner(s): Williams, Arun C
• Application Number:
  US15/893,839
• Publication Number:
  US 20180183270A1
• Time in Patent Office: 806 Days
• Field of Search: 320108
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/00045 Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
• CPC Class Codes: H02J 7/0045 concerning the insertion or the connection of the batteries
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04N 23/60 Control of cameras or camera modules
• CPC Class Codes: H04N 23/65 Control of camera operation in relation to power supply
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A non-contact power feeding system has a power source device and an electronic device configured to operate using power transmitted in a non-contact manner from the power source device. The power source device has a battery, a power reception circuit configured to receive power transmitted in a non-contact manner and to charge the battery with the power, and a power transmission circuit configured to transmit power to the electronic device in a non-contact manner, utilizing power stored in the battery. Furthermore, the power source device may further have a switch connected between the battery and the power transmission circuit, and the power transmission circuit may start power transmission when the switch turns on, whereas the electronic device may further have a starting mechanism provided in a position opposing the switch, when the power source device is attached to a predetermined position, and configured to turn on the switch.

Claims

1. A non-contact power feeding system comprising:

a power source device; and

an electronic device configured to operate using power transmitted in a non-contact manner from the power source device, wherein

the power source device comprises;

a battery;

a power reception circuit configured to receive power transmitted in a non-contact manner and to charge the battery with the power;

a power transmission circuit configured to transmit power stored in the battery to the electronic device in a non-contact manner; and

a switch connected between the battery and the power transmission circuit;

the power transmission circuit starts power transmission in response to the switch turning on;

the electronic device further comprises;

a starting mechanism provided in a position opposing the switch and configured to turn on the switch in response to the power source being attached to a predetermined position of the electronic device; and

a transmitting circuit configured to transmit a wireless signal at a predetermined period in response to power being transmitted from the power source device;

the power source device further comprises a receiving circuit configured to receive the wireless signal; and

the power transmission circuit of the power source device stops power transmission to the electronic device in response to being unable to receive the wireless signal from the transmitting circuit for a given time period after starting power transmission to the electronic device.

2. The non-contact power feeding system according to claim 1, wherein:

the wireless signal comprises identification information of the electronic device; and

the power transmission circuit of the power source device determines that the wireless signal from the transmitting circuit has not been received in response to the identification information included in the wireless signal received by the receiving circuit not matching identification information stored in advance.

3. The non-contact power feeding system according to claim 1,

wherein the electronic device further comprises a casing configured to removably support the power source device.

4. The non-contact power feeding system according to claim 2,

wherein the electronic device further comprises a casing configured to removably support the power source device.