Charging apparatus for vehicle

• US 10,005,370 B2
• Filed: 04/16/2015
• Issued: 06/26/2018
• Est. Priority Date: 04/22/2014
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Murasato, Kenji, Kitano, Eiji, Suzuki, Yasuo
• Primary Examiner(s): Johnson, Ryan
• Application Number:
  US15/300,849
• Publication Number:
  US 20170036559A1
• Time in Patent Office: 1,167 Days
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/20 characterised by converters located in the vehicle
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: B60L 58/20 having different nominal voltages
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• 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 10/72 Electric energy management in electromobility
• 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
• CPC Class Codes: Y04S 10/126 the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]

Abstract

A charging apparatus is for a vehicle and the charging apparatus includes a charging port, an AC-DC converter, a capacitor, a DC-DC conversion unit and an electronic control unit. The electronic control unit is configured to reduce an output current from the DC-DC conversion unit to at least one of the electric power storage device or the auxiliary load in response to a deterioration from a predetermined state of a state of the electric power supplied from the outside of the vehicle to the charging port.

Claims

1. A charging apparatus for a vehicle, the charging apparatus comprising:

a charging port;

an AC-DC converter configured to convert AC electric power received from the charging port into DC electric power;

a capacitor configured to smooth the DC electric power converted by the AC-DC converter;

a DC-DC conversion unit including;

a first DC-DC converter configured to convert a voltage of the capacitor and supply the converted voltage to an electric power storage device; and

a second DC-DC converter configured to convert the voltage of the capacitor and supply the converted voltage to an auxiliary load; and

an electronic control unit configured to control the DC-DC conversion unit, the electronic control unit being configured to reduce an output current from the DC-DC conversion unit to at least one of the electric power storage device or the auxiliary load in response to a deterioration from a predetermined state of a state of the electric power supplied from an outside of the vehicle to the charging port, the electronic control unit being configured to;

reduce the output current from the DC-DC conversion unit to the auxiliary load by stopping the second DC-DC converter during a start of the second DC-DC converter; and

reduce the output current from the DC-DC conversion unit to the electric power storage device by reducing an output current of the first DC-DC converter when the second DC-DC converter is stopped.

2. The charging apparatus according to claim 1, further comprising:

a sensor configured to detect a frequency of the AC electric power supplied from the outside of the vehicle to the charging port,

wherein the electronic control unit is configured to reduce the output current from the DC-DC conversion unit to at least one of the electric power storage device or the auxiliary load in a case where the frequency detected by the sensor is less than a predetermined threshold.

3. The charging apparatus according to claim 1, further comprising:

a sensor configured to detect a voltage of the AC electric power supplied from the outside of the vehicle to the charging port,

wherein the electronic control unit is configured to reduce the output current from the DC-DC conversion unit to at least one of the electric power storage device or the auxiliary load in a case where the voltage detected by the sensor is less than a predetermined threshold.

4. The charging apparatus according to claim 1, further comprising:

a sensor configured to detect a voltage of the capacitor,

wherein the electronic control unit is configured to reduce the output current from the DC-DC conversion unit to at least one of the electric power storage device or the auxiliary load in a case where the voltage detected by the sensor is less than a predetermined threshold.