Vehicle and power transfer system

• US 10,658,865 B2
• Filed: 06/27/2018
• Issued: 05/19/2020
• Est. Priority Date: 07/03/2017
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Misawa, Takahiro
• Primary Examiner(s): Diao, M Baye
• Application Number:
  US16/020,442
• Publication Number:
  US 20190006878A1
• Time in Patent Office: 692 Days
• Field of Search: 320162
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 53/122 Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
• 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 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/66 Data transfer between charging stations and vehicles
• CPC Class Codes: H02J 50/12 of the resonant type
• 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 7/00714 in response to battery charging or discharging current
• 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 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 vehicle ECU executes a control process including: a step of determining whether or not contact charging is being performed; a step of executing a first slow change process for requested power if it is determined that contact charging is being performed; a step of determining whether or not wireless charging is being performed if it is determined that contact charging is not being performed; and a step of sending a power transmitting device an instruction for execution of a second slow change process for transmission power if it is determined that wireless charging is being performed.

Claims

1. A vehicle comprising:

a power receiving device configured to receive power wirelessly from an external power supply outside the vehicle;

a charging device configured to receive power from a connector of a charging cable to be connected to the external power supply;

a power storage device configured to be charged with power supplied from any one of the power receiving device and the charging device; and

a controller configured to control charging power to be supplied to the power storage device so as to satisfy requested power,

the controller being configured to, during charging with the charging device, execute a slow change process for correcting the requested power so as to prevent a magnitude of change per predetermined time in the charging power from exceeding an upper limit,

the controller being configured not to execute the slow change process during charging with the power receiving device.

2. The vehicle according to claim 1, further comprising a communication device configured to communicate with a power transmitting device configured to wirelessly supply power from the external power supply to the power receiving device, wherein

the controller is configured to, during charging with the power receiving device, send the power transmitting device an instruction for execution of a process for preventing a magnitude of change per predetermined time in transmission power transmitted from the power transmitting device to the power receiving device from exceeding an upper limit.

3. A power transfer system comprising:

a vehicle; and

a charging station,

the charging station comprising;

a first communication device; and

at least any one of a power transmitting device to be connected to an external power supply and a connector of a charging cable to be connected to the external power supply,

the vehicle comprising;

a second communication device configured to communicate with the first communication device;

a power receiving device configured to receive power wirelessly from the power transmitting device;

a charging device configured to receive power via the connector from the external power supply;

a power storage device configured to be charged with power supplied from any one of the power receiving device and the charging device; and

a controller configured to control charging power to be supplied to the power storage device so as to satisfy requested power,

the controller being configured to;

during charging with the charging device, execute a first slow change process for correcting the requested power so as to prevent a magnitude of change per predetermined time in the charging power from exceeding an upper limit, and

during charging with the power receiving device, send the charging station an instruction for execution of a second slow change process for preventing a magnitude of change per predetermined time in transmission power transmitted from the power transmitting device to the power receiving device from exceeding an upper limit,

in the power transmitting device, the second slow change process being executed in accordance with the instruction for execution.