ELECTRICITY SUPPLY SYSTEM FOR ELECTRIC AUTOMOBILE, AND ELECTRIC AUTOMOBILE AND POWER SUPPLY DEVICE USED IN SAID SYSTEM

• US 20130181669A1
• Filed: 09/30/2011
• Published: 07/18/2013
• Est. Priority Date: 10/01/2010
• Status: Active Grant

• Current Assignee: PANASONIC AUTOMOTIVE SYSTEMS CO., LTD. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Kawasaki, Akihisa
• Granted Patent: US 9,385,558 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/52 characterised by DC-motors
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• 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 53/60 Monitoring or controlling charging stations
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• 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: B60M 7/003 for vehicles using stored power (e.g. charging stations)
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01M 2010/4278 Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• 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 7/00036 : Charger exchanging data with battery
• CPC Class Codes: H02J 7/00302 : Overcharge protection
• CPC Class Codes: H02J 7/00309 : Overheat or overtemperature protection
• CPC Class Codes: H02J 7/0049 : Detection of fully charged condition
• 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
• CPC Class Codes: Y02T 90/167 : Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

Provided are an electric automobile to which a power supply device supplies power, and an electricity supply system capable of accurately associating the power supply device and the electric automobile carrying out communication therewith. A power supply-side control unit (24) controls such that electricity that a power supply unit (21) supplies reaches a first electricity quantity Pa before a power supply-side communications unit (23) receives a request signal from a vehicle-side communications unit (43), and controls such that electricity that the power supply unit (21) supplies reaches a second electricity quantity Pb, which is greater than the first electricity quantity Pa, after the power supply-side communications unit (23) receives the request signal from the vehicle-side communications unit (43). The vehicle-side communications unit (43) activates on the basis of the first electricity quantity Pa received from the power supply unit (21) of a power supply device (2).

Claims

1. A power supply system for an electric vehicle that supplies power from a power supply apparatus to an electric vehicle in a non-contact manner,

wherein the electric vehicle includes

a vehicle-side communication section that wirelessly communicates with the power supply apparatus,

a power receiving section that is supplied with power from the power supply apparatus in a non-contact manner, and

a power storage section that stores power received by the power receiving section,

wherein the power supply apparatus includes

a vehicle detecting section that detects the entrance of the electric vehicle to a predetermined area,

a power supply-side communication section that wirelessly communicates with the vehicle-side communication section of the electric vehicle,

a power supply section that supplies power to the power receiving section of the electric vehicle in a non-contact manner, and

a power supply-side control section that controls the power supply section, and

wherein the power supply-side control section

performs a control for causing the power supply section to supply power of a first power value when the vehicle detecting section detects the entrance of the electric vehicle to the predetermined area, and

performs a control for causing the power supply section to supply power of a second power value greater than the first power value when it is determined that a communication is set up between the power supply-side communication section and the vehicle-side communication section in a state where the power supply section is supplying power of the first power value.

2. The power supply system for an electric vehicle according to claim 1, wherein the first power values are set to be different from each other depending on the respective power supply apparatuses,

wherein the vehicle-side communication section transmits a request signal including the power value received by the power receiving section and a vehicle identification number of the electric vehicle in a state where the power supply section is supplying power of the first power value,

wherein the power supply-side communication section transmits a response signal including the vehicle identification number when the power value included in the request signal is in a predetermined range including the first power value,

wherein the vehicle-side communication section transmits a power supply start signal when receiving the response signal within a predetermined time after transmitting the request signal, and

wherein the power supply-side control section determines that a communication is set up between the power supply-side communication section and the vehicle-side communication section when the power supply-side communication section receives the power supply start signal.

3. The power supply system for an electric vehicle according to claim 1, wherein the first power values are set to temporally vary in patterns different from each other depending on the power supply apparatuses,

wherein the vehicle-side communication section transmits a request signal including the pattern of the first power value received by the power receiving section and a vehicle identification number of the electric vehicle in a state where the power supply section is supplying power of the first power value,

wherein the power supply-side communication section transmits a response signal including the vehicle identification number when the pattern of the first power value included in the request signal is the pattern of the power supply apparatus,

wherein the vehicle-side communication section transmits a power supply start signal when receiving the response signal within a predetermined time after transmitting the request signal, and

wherein the power supply-side control section determines that a communication is set up between the power supply-side communication section and the vehicle-side communication section when the power supply-side communication section receives the power supply start signal.

4. The power supply system for an electric vehicle according to claim 1, wherein the vehicle-side communication section transmits a request signal when determining that the power supply section is supplying power of the first power value, and

wherein the power supply-side control section determines that a communication is set up between the power supply-side communication section and the vehicle-side communication section when the power supply-side communication section receives the request signal while the power supply section is supplying power of the first power value.

5. The power supply system for an electric vehicle according to claim 1, wherein the vehicle-side communication section is started up with power of the first power value supplied from the power supply section of the power supply apparatus to the power receiving section.

6. The power supply system for an electric vehicle according to claim 1, wherein the power storage section stores power of a second power value supplied from the power supply section to the power receiving section.

7. An electric vehicle that is supplied with power from a power supply apparatus in a non-contact manner, comprising:

a vehicle-side communication section that wirelessly communicates with the power supply apparatus;

a power receiving section that is supplied with power from the power supply apparatus in a non-contact manner; and

a power storage section that stores power received by the power receiving section,

wherein the vehicle-side communication section transmits a request signal to the power supply apparatus in a state where the power receiving section is being supplied with power of a first power value from the power supply apparatus, and

wherein the power storage section stores power of a second power value which is greater than the first power value and which is supplied from the power supply apparatus to the power receiving section after transmitting the request signal.

8. A power supply apparatus that supplies power to an electric vehicle in a non-contact manner, comprising:

a vehicle detecting section that detects the entrance of the electric vehicle to a predetermined area;

a power supply-side communication section that wirelessly communicates with the electric vehicle;

a power supply section that supplies power to the electric vehicle in a non-contact manner; and

a power supply-side control section that controls the power supply section, and

wherein the power supply-side control section

performs a control for causing the power supply section to supply power of a first power value when the vehicle detecting section detects the entrance of the electric vehicle to the predetermined area, and

performs a control for causing the power supply section to supply power of a second power value greater than the first power value when the power supply-side communication section receives a request signal from the electric vehicle in a state where the power supply section is supplying power of the first power value.