NON-CONTACT POWER RECEPTION SYSTEM AND NON-CONTACT POWER TRANSMISSION SYSTEM

• US 20130057082A1
• Filed: 05/12/2011
• Published: 03/07/2013
• Est. Priority Date: 05/14/2010
• Status: Abandoned Application

• Current Assignee: Kabushiki Kaisha Toyota Jidoshokki, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Kabushiki Kaisha Toyota Jidoshokki, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Takada, Kazuyoshi, Suzuki, Sadanori, Sakoda, Shimpei, Yamamoto, Yukihiro, Ichikawa, Shinji, Nakamura, Toru
• Application Number:
  US13/697,662
• Publication Number:
  US 20130057082A1
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2270/40 related to technical updates when adding new parts or software
• CPC Class Codes: B60L 3/003 relating to inverters
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• 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 53/122 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 53/305 Communication interfaces
• CPC Class Codes: B60L 53/36 by positioning the vehicle
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: B60L 58/15 Preventing overcharging
• CPC Class Codes: B60L 58/16 responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• 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 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00302 Overcharge protection
• CPC Class Codes: H02J 7/005 Detection of state of health [SOH]
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries
• 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

Abstract

A non-contact power reception system comprising movable body equipment including a secondary-side coil for receiving, in a non-contact manner, electric power from a primary-side coil, which receives electric power from an AC power source, a rectifier, which rectifies electric power received by the secondary-side coil, and an electrical storage device, which is connected to rectifier, wherein the movable body equipment includes a matching unit located between the secondary-side coil and the rectifier, and the non-contact power reception system is configured to bring the matching unit into a mismatch state when electric power is being received from the primary-side coil in a state in which the movable body equipment should refuse power reception.

Claims

1. A non-contact power reception system comprising:

movable body equipment including;

a secondary-side coil for receiving, in a non-contact manner, electric power from a primary-side coil, which receives electric power from an AC power source,

a rectifier, which rectifies electric power received by the secondary-side resonance coil, and

an electrical storage device, to which electric power rectified by the rectifier is supplied, wherein

the movable body equipment includes;

a matching unit located between the secondary-side coil and the rectifier, and

the non-contact power reception system is configured to bring the matching unit into a mismatch state when electric power is being received from the primary-side coil in a state in which the movable body equipment should refuse power reception.

2. The non-contact power reception system according to claim 1, wherein the reception system is configured to bring the matching unit into the mismatch state when a charging operation to the electrical storage device cannot be canceled even though cancellation of the charging operation is desired.

3. The non-contact power reception system according to claim 1, wherein the case where electric power is being received from the primary-side coil in a state in which the movable body equipment should refuse power reception is a case where the charging operation of the electrical storage device is not stopped even though a charging stopping command input.

4. The non-contact power reception system according to claim 1, wherein the case where electric power is being received from the primary-side coil in a state in which the movable body equipment should refuse power reception is a case where the charging operation of the electrical storage device is not completed even though a charging-completion signal associated with the full charge state of the electrical storage device has been output.

5. The non-contact power reception system according to claim 1, wherein

the movable body equipment is mounted and used in an electric vehicle.

6. The non-contact power reception system according to claim 1, wherein the matching unit is adjusted on the basis of data indicative of a relationship between a state of charge of the electrical storage device when the charging operation is carried out in a state in which the electrical storage device is normally charged and a suitable impedance of the matching unit corresponding to the state of charge.

7. A non-contact power transmission system comprising:

power supply equipment including an AC power source and a primary-side coil, and

a non-contact power reception system including movable body equipment,

wherein the movable body equipment includes;

a secondary-side coil for receiving, in a non-contact manner, electric power from the primary-side coil, which receives electric power from the AC power source,

a rectifier, which rectifies electric power received by the secondary-side resonance coil, and

an electrical storage device, to which electric power rectified by the rectifier is supplied,

wherein the movable body equipment includes a matching unit located between the secondary-side coil and the rectifier, and

the non-contact power reception system is configured to bring the matching unit into a mismatch state when electric power is being received from the primary-side coil in a state in which the movable body equipment should refuse power reception.

8. The non-contact power transmission system according to claim 7, wherein the non-contact power transmission system is configured such that power supply is stopped if a state in which reflected electric power from the movable body equipment to the AC power source is not less than a preset value continues for a set period of time or longer.