Vehicle and control method for vehicle

• US 9,975,432 B2
• Filed: 04/14/2015
• Issued: 05/22/2018
• Est. Priority Date: 04/25/2014
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Hatanaka, Tatsuwo
• Primary Examiner(s): Brushaber, Frederick M
• Application Number:
  US15/301,167
• Publication Number:
  US 20170015200A1
• Time in Patent Office: 1,134 Days
• CPC Class Codes: B60L 3/00 Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/16 Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
• CPC Class Codes: B60L 58/25 by controlling the electric load
• 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 90/14 Plug-in electric vehicles

Abstract

A vehicle includes an electric power supply, an external terminal, a lid, a switch, and an electronic control unit. The lid is disposed in the external terminal. The switch is disposed at an electric circuit between the external terminal and the electric power supply. The electronic control unit is configured to close the switch while the output or the input of the electric power is performed through the external terminal. The electronic control unit is configured to open the switch during traveling. The electronic control unit is configured to execute welding diagnosis for the switch. The electronic control unit is configured to determine whether to permit the vehicle to travel based on a result of the welding diagnosis and an open-closed state of the lid.

Claims

1. A vehicle comprising:

an electric power supply;

an external terminal configured to be capable of outputting electric power of the electric power supply to an external load, the external terminal being configured to be capable of being input electric power for charging the electric power supply from an external electric power supply;

a lid disposed in the external terminal;

a switch disposed at an electric circuit between the external terminal and the electric power supply; and

an electronic control unit configured to control the switch, the electronic control unit being configured to close the switch while the output or the input of the electric power is performed through the external terminal, the electronic control unit being configured to open the switch during traveling, the electronic control unit being configured to execute welding diagnosis for the switch, and the electronic control unit being configured to determine whether to permit the vehicle to travel based on a result of the welding diagnosis and an open-closed state of the lid,

wherein the electronic control unit is configured to determine that the traveling can be permitted, on a condition that the lid is in a closed state and the result of the welding diagnosis shows a one pole welding abnormality of the switch.

2. The vehicle according to claim 1,

wherein the electronic control unit is configured to execute the welding diagnosis after the termination of the output or the input of the electric power through the external terminal, and

wherein the electronic control unit is configured to determine whether to permit the vehicle to travel based on the result of the welding diagnosis and the open-closed state of the lid, when the electronic control unit receives a start request for a traveling system of the vehicle.

3. The vehicle according to claim 2,

wherein the electronic control unit is configured to re-execute the welding diagnosis, on a condition that the result of the welding diagnosis shows diagnosis incomplete when the electronic control unit receives the start request, and

wherein the electronic control unit is configured to determine whether to permit the vehicle to travel based on a result of the re-execution of the welding diagnosis and the open-closed state of the lid.

4. The vehicle according to claim 3,

wherein the electronic control unit is configured to re-execute the welding diagnosis, on a condition that the lid is in a closed state, and the result of the welding diagnosis shows the diagnosis incomplete when the electronic control unit receives the stat request.

5. The vehicle according to claim 1,

wherein the electronic control unit is configured to determine that the traveling can be permitted, on a condition that the lid is in an open state or an indefinite state and the result of the welding diagnosis shows normal.

6. A control method for a vehicle, the vehicle including an electric power supply, an external terminal, a lid, a switch, and an electronic control unit, the external terminal being configured to be capable of outputting electric power of the electric power supply to an external load, the external terminal being configured to be capable of being input electric power for charging the electric power supply from an external electronic power supply, the lid being disposed in the external terminal, the switch being disposed at an electric circuit between the external terminal and the electric power supply, the switch being configured to be closed while the output or the input of the electric power is performed through the external terminal, and the switch being configured to be opened during traveling, the control method comprising:

executing, by the electronic control unit, welding diagnosis for the switch;

detecting, by the electronic control unit, an open-closed state of the lid; and

determining, by the electronic control unit, whether to permit the vehicle to travel based on the result of a welding diagnosis and the open-closed state of the lid,

wherein the electronic control unit is configured to determine that the traveling can be permitted, on a condition that the lid is in a closed state and the result of the welding diagnosis shows a one pole welding abnormality of the switch.

7. A vehicle comprising:

an electric power supply;

an external terminal configured to be capable of outputting electric power of the electric power supply to an external load, the external terminal being configured to be capable of being input electric power for charging the electric power supply from an external electric power supply;

a lid disposed in the external terminal;

a switch disposed at an electric circuit between the external terminal and the electric power supply; and

an electronic control unit configured to control the switch, the electronic control unit being configured to close the switch while the output or the input of the electric power is performed through the external terminal, the electronic control unit being configured to open the switch during traveling, the electronic control unit being configured to execute welding diagnosis for the switch, and the electronic control unit being configured to determine whether to permit the vehicle to travel based on a result of the welding diagnosis and an open-closed state of the lid;

wherein the electronic control unit is configured to determine that the traveling can be permitted, on a condition that the lid is in an open state or an indefinite state and the result of the welding diagnosis shows normal.