US 10,833,534 B2Granted

Power transmitting device and power receiving device

AssigneeToyota Jidosha Kabushiki Kaisha

InventorTakahiro Misawa

Life of this patent

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Abstract

A power transmitting device is configured to perform a “power transmission frequency adjustment control” applied to adjust a power transmission frequency representing a frequency of power to be transmitted. A power receiving device is configured to perform a “resonance frequency adjustment control” applied to adjust a resonance frequency of a power receiving unit contactlessly receiving the power transmitted from the power transmitting device. The power transmitting device uses control information received from the power receiving device to determine whether the power receiving device has a function of performing the resonance frequency adjustment control applied to adjust the resonance frequency of the power receiving unit. When the power receiving device has the function of performing the resonance frequency adjustment control, the power transmitting device selects one of the power transmission frequency adjustment control and the resonance frequency adjustment control that has a higher resolution.

Claims3

Dependent claims

A power transmitting device comprising:

a power transmitting unit configured to contactlessly transmit alternating-current power to be transmitted to a power receiving unit of a power receiving device;
and
an electronic control unit configured to adjust a power transmission frequency representing a frequency of the power to be transmitted,
the electronic control unit being configured to use information received from the power receiving device to determine whether the power receiving device has a function of adjusting a resonance frequency of the power receiving unit, and use a result of the determination to determine whether to perform the control applied to adjust the power transmission frequency,
the electronic control unit being configured to, when the power receiving device does not have the function of adjusting the resonance frequency, adjust the frequency of the power to be transmitted, and
the electronic control unit being configured to, when the power receiving device has the function of adjusting the resonance frequency, compare a controllability of the resonance frequency with a controllability of the power transmission frequency, and when the controllability of the power transmission frequency is higher than the controllability of the resonance frequency, adjust the power transmission frequency.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/001,474Filed 6 Jun 2018
Priority: JP 2017-1135778 Jun 2017
Published: US 2018/0358843 A113 Dec 2018
Granted: 10 Nov 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

H02J 50/12
Using inductive coupling: of the resonant type
B60L 53/122
Inductive energy transfer: circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
B60L 53/126
Inductive energy transfer: methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power…
B60L 53/65
Monitoring or controlling charging stations: involving identification of vehicles or their battery types