WO2012038803A1 - Charging device - Google Patents

Charging device Download PDF

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Publication number
WO2012038803A1
WO2012038803A1 PCT/IB2011/002175 IB2011002175W WO2012038803A1 WO 2012038803 A1 WO2012038803 A1 WO 2012038803A1 IB 2011002175 W IB2011002175 W IB 2011002175W WO 2012038803 A1 WO2012038803 A1 WO 2012038803A1
Authority
WO
WIPO (PCT)
Prior art keywords
plug
charging
plug holder
power
holder
Prior art date
Application number
PCT/IB2011/002175
Other languages
French (fr)
Inventor
Satoru Ueno
Tatsuya Mukai
Shiro Mori
Naoki Fukuo
Hirokazu Shin
Original Assignee
Panasonic Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Publication of WO2012038803A1 publication Critical patent/WO2012038803A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/04—Cutting off the power supply under fault conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/11—DC charging controlled by the charging station, e.g. mode 4
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/14—Conductive energy transfer
    • B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B60L53/305—Communication interfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B60L53/31—Charging columns specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/549—Current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/30—Preventing theft during charging
    • B60L2270/32—Preventing theft during charging of electricity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/30—Preventing theft during charging
    • B60L2270/34—Preventing theft during charging of parts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • the present invention relates to a charging device.
  • an electric vehicle (EV) driven by electric power such as an electric vehicle with a storage battery and a plug-in hybrid vehicle (PHV)
  • PHS plug-in hybrid vehicle
  • Such electric vehicle includes a secondary battery serving as a driving source for driving an electric motor, and a charging circuit for charging the secondary battery. Further, the electric vehicle is provided with a power receiving socket.
  • the secondary battery is charged in such a manner that, to the power receiving socket, there is connected a charging plug that is connected to a power circuit for supplying alternating power, such as 100 Vac, via a power cable (see, e.g., Japanese Patent Application Publication No. 2010-166756) .
  • Fig. 10 is a schematic block diagram of a charging device 1.
  • the charging device 1 has a device body 20 with a box- like shape in which a power circuit (not shown) for supplying electric power is accommodated.
  • a charging plug 10 is attached to a tip end of a power cable CB2 extended from the device body 20.
  • the charging plug 10 in order to charge the battery, is connected to the power receiving socket 101 of an electric equipment 100 such as an electric vehicle.
  • the electric equipment 100 may be provided with a locking mechanism for locking the charging plug 10 to prevent the charging plug 10 from being separated from the power receiving socket in a charging mode Meanwhile, if an emergency situation happens in the charging mode, it will be required to separate the power circuit from the electric equipment 100.
  • the device body 20 of the charging device 1 is provided with a stop switch SI for stopping an operation of the power circuit.
  • the stop switch SI By pushing the stop switch SI, the power supply to the electric equipment 100 is turned off.
  • the stop switch SI is provided on a front surface of the device body 20, the charging operation is likely to be interrupted by mischievous or careless touching while the stop switch SI has good operability.
  • the present invention provides a charging device capable of reducing such possibility that an operation switch of a power circuit is actuated by mischievous touching or the like while improving its operability.
  • a charging device including: a power circuit for supplying electric power to electric equipment provided with a secondary battery; a charging plug connected to the power circuit via a power cable, the charging plug being adapted to be detachably connected to a power socket of the electric equipment; and a device body for holding the charging plug of which at least a portion is accommodated in a recess formed in a surface of the device body, wherein an operation part for causing the power circuit to perform predetermined operations is provided on an inner side of the device body.
  • the operation part is preferably provided on an upper side of the recess in a state where the charging device is installed.
  • the operation part is preferably a shutoff operation part for shutting off an output of the power circuit.
  • the power circuit has an electric leakage breaking function that shuts off the power supply to the electric equipment when detecting an electric leakage; and the operation part has an electric leakage testing function that generates a pseudo- electric leakage to test the electric leakage breaking function.
  • the operation part is provided on the inner side of the device body, whereby the operation part is not conspicuous and not likely to be operated by mischievous touching or the like.
  • the charging plug is detached from the recess to be connected to the power socket of the electric equipment in a charging mode, so that the operation part disposed at the upper side of the recess in the inner side of the device body can be operated with ease .
  • FIGs. 1A to 1C show a charging device in accordance with an embodiment of the invention, wherein Fig. 1A is a front view of a main part, Fig. IB is a side cross sectional view of the main part, and Fig. 1C is a cross sectional view of the main part taken along the line B-B in Fig. 1A;
  • FIGS. 2A to 2C show the charging device, wherein Fig.
  • FIG. 2A is an external perspective view
  • Fig. 2B is a front view
  • Fig. 2C is a right side view
  • Fig. 3 is a schematic circuit diagram of the charging device ;
  • Figs. 4A to 4C are cross sectional views of the main part explaining an operation for attaching and detaching a charging plug to and from the charging device;
  • FIGs. 5A and 5B show the charging device, in which Figs. 5A and 5B are cross sectional views of the main part explaining the operation for attaching and detaching the charging plug to and from the charging device;
  • Figs. 6A to 6C show the charging device, wherein Fig. 6A is a cross sectional view of the main part, and Figs. 6B and 6C are cross sectional views of the main part explaining the operation for attaching and detaching the charging plug to and from the charging device;
  • Figs. 7A to 7D show the charging device, in which Figs. 7A to 7D are cross sectional views of the main part explaining the operation for attaching and detaching the charging plug to and from the charging device;
  • FIGS. 8A to 8D show the charging device, in which Figs. 8A to 8D are cross sectional views of the main part explaining the operation for attaching and detaching the charging plug to and from the charging device;
  • Figs. 9A and 9B show the charging device, wherein Fig. 9A is a front view, and Fig. 9B is a side view; and
  • Fig. 10 is an explanatory drawing of a conventional charging device .
  • Fig. 3 is a schematic circuit diagram of the charging device 1.
  • the charging device 1 mainly includes a control circuit 2, a display unit 3, an input unit 4, a relay 5, a zero-phase current transformer (ZCT) 6, a power switch 7, and terminal blocks TBI and TB2, all of which are accommodated in a device body 20.
  • a power cable CB1 is connected to the terminal block TBI from an external power source. Further, one end of a power cable CB2 is connected to the terminal block TB2, and the other end is connected to a charging plug 10 (see Fig. 4) that is adapted to be detachably connected to a power socket 101 of the electric equipment 100.
  • the power cable CB1 includes two power wires LI and L2, and a ground wire L3.
  • the power cable CB2 includes the above power wires LI and L2, the above ground wire L3 , and an electric wire L4 for transmitting and receiving signals between the control circuit 2 and a charging circuit 102 of the electric equipment 100 (e.g., an in-vehicle charging device for electric vehicles) .
  • a charging circuit 102 of the electric equipment 100 e.g., an in-vehicle charging device for electric vehicles
  • the charging plug 10 is attached to the power socket 101 of the electric equipment 100 to supply electric power to the charging circuit 102 from the charging device 1, the charging circuit 102 charges a battery (a secondary battery) 103.
  • the power switch 7 is provided on the way of an internal conductive line connected to the power wire (e.g., the power wire L2) and turns on/off the power supply to the control circuit 2.
  • the power wire e.g., the power wire L2
  • the relay 5 has relay contacts provided in the internal conductive lines connected to the power wires LI and L2, and the control circuit 4 controls ON/OFF operations of the relay contact 2a.
  • the zero-phase current transformer 6 is used for detecting an unbalanced current that flows through the power wires LI and L2 when an electric leakage occurs .
  • the control circuit 2 opens or closes the relay 5 based on control signals inputted from the charging circuit so that the power supply to the in-vehicle charger is turned off or on. Besides, when detecting the unbalanced current flowing through the zero-phase current transformer 6, the control circuit 2 opens the relay 2 to interrupt the power supply to the electric equipment 100. Consequently, a power circuit for controlling the power supply to the electric equipment 100 is constituted by the control circuit 2, the relay 5, and the like.
  • a structure of the charging device 1 will be described with reference to Figs. 1, 2, and 4.
  • up-down and right- left directions are defined based on the directions shown in Fig. 2B (the state in which the charging device 1 is installed on the wall) .
  • the left-hand side and the right-hand side in Fig. 2C denote a front side and a rear side, respectively.
  • the device body 20 of the charging device 1 is made of a resin molded into an elongated rectangular parallelepiped shape, and is installed on a wall or the like for use.
  • a corner portion between a front surface and a lower surface thereof is cut to form an opening.
  • a recess 21 into which at least a portion of the charging plug 10 is inserted in a non-charging mode.
  • the charging plug 10 includes: a connection part 11 with a cylindrical shape, which is adapted to be inserted into and connected to the power socket 101, at a tip end side thereof; and a lock claw 12 (latch part) to be engaged with a recess provided in the power socket 101.
  • a handgrip 13 gripped by hand is provided in a rear portion of the charging plug 10.
  • the connection part 11 there is provided a connection terminal (not shown) to be electrically connected to a terminal (not shown) disposed in the power socket 101.
  • a plug holder 22 for holding the connection part 11 of the charging plug 10.
  • the plug holder 22 molded of synthetic resin, is formed to have a tubular body whose one end (upper side) is closed and into which the connection part 11 is to be inserted.
  • a protrusion 25 to which the lock claw 12 of the charging plug 10 is to be fitted is provided on its front side.
  • inclined portions 26 and 26 are formed to expand outwardly as they go to their tip ends, and are disposed on both of right and left sides of the opening so as to avoid a portion where the lock claw 12 is to be inserted.
  • a pivotal shaft 23 is provided on a bottom wall 22a, which closes the one end of the plug holder 22.
  • the plug holder 22 pivots together with the pivotal shaft 23.
  • the pivotal shaft 23 is pivotally supported by a bearing part (not shown) provided in the device body 20.
  • a spring 24 serving as an elastic member biases the pivotal shaft 23 (and the plug holder 22) to pivot clockwise, in Fig. IB. Accordingly, when the charging plug 10 is detached from the plug holder 22, the plug holder 22 is pivoted clockwise by the spring force of the spring 24 and then the opening of the plug holder 22 is protruded forwardly as shown in Fig. IB.
  • the plug holder 22 comes into contact with an upper stopper (not shown) provided in the device body 20, which inhibits the plug holder 22 from further pivoting clockwise.
  • the plug holder 22 is pivoted counterclockwise by the weight of the charging plug 10 and then the opening of the plug holder 22 (and the charging plug 10) is protruded obliquely and downwardly as shown in Fig. 4C.
  • the plug holder 22 comes into contact with a lower stopper (not shown) provided in the device body 20, which also inhibits the plug holder 22 from further pivoting counterclockwise.
  • the aforementioned power switch 7 is disposed near the recess 21 in which the plug holder 22 is provided.
  • the power switch 7 has an operating handle 7a pivotally disposed and, by pivoting the operating handle 7a clockwise or counterclockwise, the power switch 7 is turned on or off. Further, the power switch 7 is placed at the upper side of the recess 21 with the operating handle 7a directed downward (toward the recess 21) .
  • a plurality of light-emitting diodes LD1 to LD3 which constitutes the aforementioned display unit 3, is disposed on the front surface of the device body 20 above the recess 21. ON/OFF of the light-emitting diodes LD1 to LD3 are controlled by the control circuit 2, and the operating conditions of the charging device 1 are displayed by the states of the respective light-emitting diodes LD1 to LD3 (ON, OFF, blinking, or the like) .
  • the charging plug 10 is attached to the plug holder 22 when the charging device 1 is not used to charge the electric equipment 100.
  • the plug holder 22 is protruded forwardly (in a forward direction in the state where the device body 20 is installed) from the device body 20 as shown in Figs. 1A, IB, and 4A. Therefore, it becomes easier for a user to insert the connection part 11 of the charging plug 10 into the plug holder 22.
  • the plug holder 22 is configured to hold the charging plug 10 by the lock claw 12 of the charging plug 10 being engaged with the protrusion 25 and to be pivotable between one state in which the plug holder 22 is protruded forwardly from the device body 20 and the other state in which the plug holder 22 is protruded obliquely and downwardly.
  • the plug holder 22 protrudes forwardly from the device body 20, thereby making it easy to insert the charging plug 10 into the plug holder 22.
  • the plug holder 22 protrudes obliquely and downwardly, thereby reducing an amount of the protrusion of the charging plug 10 as compared with the state where the plug holder 22 is protruded forwardly. This prevents the charging plug 10 from being obstacle.
  • the charging plug 10 is held in the device body 20. Therefore, the charging plug 10 is avoided from being broken due to accidental stamping by a vehicle or the like.
  • the plug holder 22 is formed to have a tubular body into which the connection part 11 of the charging plug 10 is to be inserted.
  • the connection part 11 inserted into the tube body of the plug holder 22 is held by the plug holder 22 with the opening of the plug holder 22 directed downward. Therefore, the connection part 11 serving as a charging part becomes hard to be wet with drops of water.
  • the inclined portions 26 are formed around the opening of the plug holder 22.
  • the connection part 11 comes into contact with the inclined portions 26 and, by the inclined portions 26, is guided into the tube body of the plug holder 22. This makes it easier to attach the charging plug 10 to the plug holder 22.
  • an extending portion 20a is provided, which serves as a rain cover.
  • the extending portion 20a is protruded downwardly forwardly from an upper peripheral portion of the recess 21. Therefore, the charging plug 10 attached to the plug holder 22 is hard to be wet with drops of water.
  • the operating handle 7a (an operation part) of the power switch 7 is disposed on the upper side of the recess 21 in which the plug holder 22 is provided. A user can put his/her finger into the recess 21 to operate the operating handle 7a (see Figs. IB and 4A) .
  • the operating handle 7a Since the operating handle 7a is not provided on the front surface of the apparatus body 20, the operating handle 7a is hard to be operated by mischievous or careless touching. This reduces the possibility of unintended operations of the charging device 1. Further, in charging the electric equipment 100, the charging plug 10 is detached from the recess 21 and connected to the power receiving socket 101 of the electric equipment 100. This makes it easy for a user to put his/her finger into the recess 21, so that the operating handle 7a disposed near the recess 21 on the inner side of the device body 20 can be operated easily.
  • the power supply to the electric equipment 100 can be turned off easily by operating the operating handle 7a disposed near the recess 21 on the inner side of the device body 20.
  • the operating handle 7a is provided on the upper side of the recess 21 in the state where the charging device is installed.
  • the operating handle 7a is hidden by the device body 20 in the state where the charging device is installed, whereby the operating handle 7a is hard to be seen even when the charging plug 10 is detached from the plug holder 22. This further reduces the possibility that the operating handle 7a is operated by mischievous or careless touching. Besides, rain and dust are difficult to attach to the operating handle 7a, thereby preventing insulative deterioration and contamination of the power switch 7.
  • the operating handle 7a of the power switch 7 serving as a shutoff operation part for shutting off an output of the power circuit .
  • Another operation part other than the power switch 7, however, may be employed as long as it allows the power supply circuit to perform predetermined operation.
  • the control circuit 2 for example, has an electric leakage breaking function that causes the relay 5 to open for shutting off the power supply to the electric equipment 100 when detecting the electric leakage based on the output of the zero-phase current transformer 6.
  • the control circuit 2 is provided with an input unit 4 having an electric leakage testing function that generates a pseudo- electric leakage to test the electric leakage breaking function.
  • the input unit 4 may be disposed near the recess 21 on the inner side of the device body 20. In this case, like the above mentioned case, it is difficult to operate the input unit 4 by mischievous or careless touching. This reduces the possibility that the power circuit is operated unintentionally .
  • the plug holder 22 is biased by the spring 24 provided at the pivotal shaft so as to protrude forwardly in the state where the charging device is installed, but the structure for pivoting the plug holder 22 is not limited to this.
  • a pivotal shaft 23 is provided at a lower end of the bottom wall 22a.
  • One end of a coil spring 28 may be connected to an upper end of the bottom wall 22a and the other end thereof may be connected to a supporting plate 20b provided in the device body 20.
  • the power switch 7 is omitted in Figs. 5A and 5B.
  • the charging plug 10 in the state where the charging plug 10 is attached to the plug holder 22, the charging plug 10 remains protruded obliquely and downwardly, thereby reducing an amount of the protrusion of the charging plug 10 as compared with the state where the plug holder 22 is protruded forwardly. This prevents the charging plug 10 from being obstacle.
  • the plug holder 22 When detaching the charging plug 10 held by the plug holder 22, the plug holder 22 is pivoted about the pivotal shaft 23 according to the movement of the user's hand that grips the handgrip 13 of the charging plug 10 from the state shown in Fig. 5B toward the state in which the opening of the plug holder 22 is directed forward as shown in Fig. 5A. As such, the plug holder 22 is pivoted upward according to the movement of the user's hand to the position where the charging plug 10 can be detached from the plug holder 22 with ease. Therefore, the charging plug 10 can be easily detached from the plug holder after the lock claw 12 is disengaged.
  • the plug holder 22 is pivoted clockwise in Figs. 5A and 5B by the recovery force of the coil spring 28 because no weight of the charging plug 10 is applied. At this time, the plug holder 22 is brought into contact with the upper stopper (not shown) and kept in the forwardly protruded state. This makes it easy to insert the charging plug 10 into the plug holder 22.
  • plug holder 22 is formed into a cylindrical shape in the charging device 1 described in Figs. 1A to 5B, a plate- like plug holder 27 may be employed as shown in Figs. 6A to 6C. Note that, to simplify the drawings shown in Figs. 6A to 6C, the power switch 7 is omitted.
  • the plug holder 27 is pivotally attached to the device body 20 via the pivotal shaft 23 and biased by a spring (not shown) so as to pivot clockwise.
  • the plug holder 27 is inserted into a gap between the connection part 11 and the lock claw 12, and a protrusion 25 to be engaged with the lock claw 12 is provided on a surface of the plug holder 27 on the side of the lock claw 12.
  • the plug holder 27 is biased by a spring (not shown) to pivot clockwise in Figs. 6A to 6C to a state where the plug holder 27 is protruded forwardly as shown in Fig. 6A. In this state, the plug holder 27 is not pivoted further clockwise by being brought into contact with the upper stopper (not shown) provided in the device body 20.
  • the plug holder 27 is pivoted counterclockwise in Figs. 6A to 6C by the weight of the charging plug 10.
  • the plug holder 27 is pivoted counterclockwise until coming into contact with the lower stopper (not shown) provided in the device body 20, so that the plug holder 27 (and the charging plug 10) is protruded obliquely and downwardly as shown in Fig. 6C.
  • the protrusion 25 of the plug holder 27 is engaged with the lock claw 12 of the charging plug 10 in the state where the charging plug 10 is attached to the plug holder 27, and the plug holder 27 is pivotable between the state where the plug holder 27 is protruded forwardly and the state where the plug holder 27 is protruded obliquely and downwardly while holding the charging plug 10.
  • the plug holder 27 is protruded forwardly from the device body 20, thereby making it easy to insert the charging plug 10 into the plug holder 27.
  • the plug holder 27 is protruded obliquely and downwardly.
  • the charging plug 10 remains protruded obliquely and downwardly, thereby reducing an amount of the protrusion of the charging plug 10 as compared with the state where the plug holder 22 is protruded forwardly. This prevents the charging plug 10 from being obstacle .
  • the plug holders 22 and 27 are biased by an elastic member to the state where the plug holders 22 and 27 are protruded forwardly in the charging device 1 described in Figs. 1A to 6C, the plug holder 22 may be biased by a weight 29 attached thereto as shown in Figs. 7A to 7D. Note that, to simplify the drawings shown in Figs 7A to 7D, the power switch 7 is omitted.
  • the plug holder 22 is formed into a substantially cylindrical shape whose one end is closed. Since the pivotal shaft 23 is provided at a lower end of the bottom wall 22a, the plug holder 22 is supported pivotally about the pivotal shaft 23. An arm 22b is protruded rearwardly from an upper end of the bottom wall 22a and the weight 29 is attached to a tip end of the arm 22b. The weight 29 is provided such that the center of gravity of the plug holder 22 locates on the right side of a vertical line L10 in the state where the plug holder 22 is protruded forwardly as shown in Fig. 7A. The plug holder 22 is biased by a weight of the weight 29 to pivot clockwise in Figs. 7A to 7D to a position at which the plug holder 22 is protruded forwardly. At that time, the plug holder 22 comes into contact with a stopper 30 provided in the device body 20, and the plug holder 22 is held at that position.
  • the plug holder 22 is kept in the position at which the plug holder 22 is protruded forwardly by the weight 29. This makes it easier to insert the connection part 11 of the charging plug 10 into the plug holder 22.
  • the plug holder 22 is pivoted counterclockwise about the pivotal shaft 23 because the charging plug 10 is heavier than the weight 29.
  • the plug holder 22 comes into contact with a stopper 31 provided in the device body 22 as shown in Fig. 7C, the plug holder 22 remains protruded obliquely and downwardly, thereby reducing an amount of the protrusion of the charging plug 10 as compared with the state where the plug holder 22 is protruded forwardly. This prevents the charging plug 10 from being obstacle.
  • the plug holder 22 when detaching the charging plug 10 held by the plug holder 22, the plug holder 22 is pivoted about the pivotal shaft 23 according to the movement of the user's hand that grips the handgrip 13 of the charging plug 10 upward from the position shown in Fig. 7C (see Fig. 7D) .
  • the plug holder 22 is pivoted upwardly according to the movement of the user's hand to the position where the charging plug 10 can be detached from the plug holder 22 with ease. Therefore, the charging plug 10 can be easily detached after the lock claw 12 is disengaged.
  • the plug holder 22 When the charging plug 10 is detached from the plug holder 22 after the lock claw 12 is disengaged from the protrusion 25, the plug holder 22 is kept in the state where the plug holder 22 is protruded forwardly by the weight 29 because the weight of the charging plug 10 is not applied to the plug holder 22. Accordingly, the plug holder 22 remains protruded forwardly after the charging plug 10 is removed therefrom, so that it becomes easier to attach the charging plug 10 to the plug holder 22.
  • the plug holder 22 is biased by the spring or the weight to the position where the plug holder 22 is protruded forwardly in the charging device 1 described in Figs. 1A to 7D
  • the spring and the weight may be omitted as shown in Figs. 8A to 8D.
  • the power switch 7 is omitted .
  • the plug holder 22 is formed into a substantially cylindrical shape whose one end is closed. In an inner periphery of the other end of the plug holder 22, an inclined surface 22c is formed so as to enlarge its opening diameter as it goes to a tip end of the plug holder 22.
  • the plug holder 22 which is pivotally supported about the pivotal shaft 23, comes into contact with a stopper 32 provided in the device body 20, so that a pivotal range of the plug holder 22 pivoting counterclockwise in Figs. 8A to 8D is restricted.
  • the plug holder 22 is not further pivoted counterclockwise. In other words, the plug holder 22 can pivot between the state in which the plug holder 22 is protruded forwardly and the state in which the plug holder 22 is protruded obliquely and downwardly.
  • the plug holder 22 In the state where the charging plug 10 is not attached to the plug holder 22, as shown in Fig. 8A, the plug holder 22 remains protruded obliquely and downwardly.
  • a tip end of the connection part 11 comes into contact with the inclined surface 22c (see Fig. 8B) .
  • the connection part 11 pushes the inclined surface 22c to pivot the plug holder 22 according to the movement of the charging plug 10, so that the connection part 11 is inserted into the plug holder 22 (see Fig. 8C) .
  • the inclined surface 22c is pushed by the charging plug 10 to pivot the plug holder 22 to a position where the charging plug 10 can be inserted into the plug holder 22 with ease. This makes it easier to attach the charging plug 10 to the plug holder 22 as compared with the case where the charging plug 10 is inserted from the below.
  • the plug holder 22 is pivoted counterclockwise in Figs. 8A to 8D about the pivotal shaft 23 by the weight of the charging plug 10.
  • the plug holder 22 comes into contact with the stopper 32 and then the plug holder 22 remains protruded obliquely and downwardly, thereby reducing an amount of the protrusion of the charging plug 10 as compared with the state where the plug holder 22 is protruded forwardly. This prevents the charging plug 10 from being obstacle.
  • the plug holder 22 when detaching the charging plug 10 held by the plug holder 22, the plug holder 22 is pivoted about the pivotal shaft 23 according to the movement of the user's hand that grips the handgrip 13 of the charging plug 10 upward from the position shown in Fig. 8D. As such, the plug holder 22 is pivoted upwardly according to the movement of the user's hand to a position where the charging plug 10 can be detached therefrom with ease. Therefore, the charging plug 10 can be easily detached after the lock claw 12 is disengaged.
  • the plug holder 22 When the charging plug 10 is detached, the plug holder 22 is pivoted counterclockwise in Figs. 8A to 8D about the pivotal shaft 23 by its own weight and comes into contact with the stopper 32, whereby the plug holder 22 remains protruded obliquely and downwardly (see Fig. 8A) .
  • the plug holders 22 and 27 are pivotable in the charging device 1 described in Figs. 1A to 8D, as shown in Fig. 9, the charging plug 10 may be pivotable with respect to a plug holder 33 without pivoting the plug holder 33.
  • Fig. 9A is a front view of the charging device 1, and
  • Fig. 9B is a side view of the charging device 1.
  • a plug holder 33 with a rod- like shape is bridged over the recess 21 so as to extend in the left-right direction.
  • the present embodiment has the same configuration as that of the charging device 1 described in Figs. 1A to 4D except for the structure for holding the charging plug 10, the same reference numerals are assigned to the same components, and redundant description thereof will be omitted.
  • the charging plug 10 In the state where the charging plug 10 is held in the charging device 1, the rod- like plug holder 33 is interposed between the connection part 11 and the lock claw 12, whereby the plug holder 33 is engaged with the lock claw 12. Under this engagement state, the charging plug 10 is pivotable between one state in which the charging plug 10 is protruded forwardly from the device body 20 and the other state in which the charging plug 10 is protruded obliquely and downwardly .
  • the charging plug 10 In cases where the charging plug 10 is held in the charging device 1, the charging plug 10 is inserted into the recess 21 from the front of the charging device 1 and the rod-shaped plug holder 33 is engaged between the connection part 11 and the lock claw 12 (a position PI shown in Fig. 9B) . After the charging plug 10 is held in the charging device 1, when the user releases his/her hand from the charging plug 10, the charging plug 10 is pivoted about the plug holder 33 by its own weight and then protruded obliquely and downwardly (a position P2 shown in Fig. 9B) .
  • the charging plug 10 when detaching the charging plug 10 from the charging device 1, the charging plug 10 is pivoted about the plug holder 33 according to the movement of when the user's hand that grips the handgrip 13 of the charging plug 10, so that the charging plug 10 is pivoted clockwise from the position P2 in Fig. 9B.
  • the charging plug 10 is pivoted about the plug holder 33 to a position where the charging plug 10 can be detached with ease, thereby making it easy to detach the charging plug 10 from the plug holder 33.
  • the charging plug 10 is inserted into the recess 21 from the front of the charging device 1 and then engaged with the rod-shaped plug holder 33. This makes it easy to attach the charging plug 10 to the plug holder 33. Further, the charging plug 10 is held in a state where it is protruded obliquely and downwardly, thereby reducing an amount of the protrusion of the charging plug 10 as compared with the state where the charging plug 10 is protruded forwardly. This prevents the charging plug 10 from being obstacle .

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Secondary Cells (AREA)

Abstract

A charging device (1) includes: a power circuit for supplying electric power to an electric equipment provided with a secondary battery, and a charging plug connected to the power circuit via a power line cable. The charging plug is adapted to be detachably connected to a power receiving socket of the electric equipment. At least a portion of the charging plug is accommodated and held in a recess (21) formed in a surface of a device body of the charging device in a non-charging mode of the electric equipment. In an inner side of the device body (20), an operating handle (7a) of a power switch (7) for turning on and off an output of the power circuit is disposed on an upper side of the recess (21). Accordingly, the power switch (7)is not likely to be operated by mischievous touching or the like.

Description

CHARGING DEVICE
Field of the Invention The present invention relates to a charging device.
Background of the Invention
In recent years, an electric vehicle (EV) driven by electric power, such as an electric vehicle with a storage battery and a plug-in hybrid vehicle (PHV) , has been practically used. Such electric vehicle includes a secondary battery serving as a driving source for driving an electric motor, and a charging circuit for charging the secondary battery. Further, the electric vehicle is provided with a power receiving socket. The secondary battery is charged in such a manner that, to the power receiving socket, there is connected a charging plug that is connected to a power circuit for supplying alternating power, such as 100 Vac, via a power cable (see, e.g., Japanese Patent Application Publication No. 2010-166756) .
Fig. 10 is a schematic block diagram of a charging device 1. The charging device 1 has a device body 20 with a box- like shape in which a power circuit (not shown) for supplying electric power is accommodated. A charging plug 10 is attached to a tip end of a power cable CB2 extended from the device body 20. In the charging device 1, in order to charge the battery, the charging plug 10 is connected to the power receiving socket 101 of an electric equipment 100 such as an electric vehicle. The electric equipment 100 may be provided with a locking mechanism for locking the charging plug 10 to prevent the charging plug 10 from being separated from the power receiving socket in a charging mode Meanwhile, if an emergency situation happens in the charging mode, it will be required to separate the power circuit from the electric equipment 100. In this case, however, since the charging plug 10 is directly connected to the power circuit and locked to the electric vehicle, it is difficult to immediately separate the power circuit from the electric equipment 100. So, the device body 20 of the charging device 1 is provided with a stop switch SI for stopping an operation of the power circuit. By pushing the stop switch SI, the power supply to the electric equipment 100 is turned off. However, since the stop switch SI is provided on a front surface of the device body 20, the charging operation is likely to be interrupted by mischievous or careless touching while the stop switch SI has good operability. That is, in cases where such an operational button, which causes the power circuit to perform predetermined operations, is provided on the outer surface of the device body 20, there is a possibility that the operational button is actuated by mischievous or careless touching, which results in unintended operations of the power supply.
Summary of the Invention
In view of the above, the present invention provides a charging device capable of reducing such possibility that an operation switch of a power circuit is actuated by mischievous touching or the like while improving its operability.
In accordance with an aspect of the present invention, there is provided a charging device including: a power circuit for supplying electric power to electric equipment provided with a secondary battery; a charging plug connected to the power circuit via a power cable, the charging plug being adapted to be detachably connected to a power socket of the electric equipment; and a device body for holding the charging plug of which at least a portion is accommodated in a recess formed in a surface of the device body, wherein an operation part for causing the power circuit to perform predetermined operations is provided on an inner side of the device body.
In the charging device, the operation part is preferably provided on an upper side of the recess in a state where the charging device is installed.
In the charging device, the operation part is preferably a shutoff operation part for shutting off an output of the power circuit.
In the charging device, it is preferred that the power circuit has an electric leakage breaking function that shuts off the power supply to the electric equipment when detecting an electric leakage; and the operation part has an electric leakage testing function that generates a pseudo- electric leakage to test the electric leakage breaking function.
In accordance with the present invention, the operation part is provided on the inner side of the device body, whereby the operation part is not conspicuous and not likely to be operated by mischievous touching or the like. Moreover, the charging plug is detached from the recess to be connected to the power socket of the electric equipment in a charging mode, so that the operation part disposed at the upper side of the recess in the inner side of the device body can be operated with ease . Brief Description of the Drawings
The objects and features of the present invention will become apparent from the following description of embodiments, given in conjunction with the accompanying drawings, in which:
Figs. 1A to 1C show a charging device in accordance with an embodiment of the invention, wherein Fig. 1A is a front view of a main part, Fig. IB is a side cross sectional view of the main part, and Fig. 1C is a cross sectional view of the main part taken along the line B-B in Fig. 1A;
Figs. 2A to 2C show the charging device, wherein Fig.
2A is an external perspective view, Fig. 2B is a front view, and Fig. 2C is a right side view;
Fig. 3 is a schematic circuit diagram of the charging device ;
Figs. 4A to 4C are cross sectional views of the main part explaining an operation for attaching and detaching a charging plug to and from the charging device;
Figs. 5A and 5B show the charging device, in which Figs. 5A and 5B are cross sectional views of the main part explaining the operation for attaching and detaching the charging plug to and from the charging device;
Figs. 6A to 6C show the charging device, wherein Fig. 6A is a cross sectional view of the main part, and Figs. 6B and 6C are cross sectional views of the main part explaining the operation for attaching and detaching the charging plug to and from the charging device;
Figs. 7A to 7D show the charging device, in which Figs. 7A to 7D are cross sectional views of the main part explaining the operation for attaching and detaching the charging plug to and from the charging device;
Figs. 8A to 8D show the charging device, in which Figs. 8A to 8D are cross sectional views of the main part explaining the operation for attaching and detaching the charging plug to and from the charging device;
Figs. 9A and 9B show the charging device, wherein Fig. 9A is a front view, and Fig. 9B is a side view; and
Fig. 10 is an explanatory drawing of a conventional charging device .
Detailed Description of the Embodiment
A technical idea of the present invention will be described, with reference to drawings, about an embodiment applied to a wall-mounted charging device for controlling a power supply to a charging circuit of an electric equipment such as an electric vehicle or an emergency battery, for exam le .
Fig. 3 is a schematic circuit diagram of the charging device 1. The charging device 1 mainly includes a control circuit 2, a display unit 3, an input unit 4, a relay 5, a zero-phase current transformer (ZCT) 6, a power switch 7, and terminal blocks TBI and TB2, all of which are accommodated in a device body 20. A power cable CB1 is connected to the terminal block TBI from an external power source. Further, one end of a power cable CB2 is connected to the terminal block TB2, and the other end is connected to a charging plug 10 (see Fig. 4) that is adapted to be detachably connected to a power socket 101 of the electric equipment 100. The power cable CB1 includes two power wires LI and L2, and a ground wire L3. Further, the power cable CB2 includes the above power wires LI and L2, the above ground wire L3 , and an electric wire L4 for transmitting and receiving signals between the control circuit 2 and a charging circuit 102 of the electric equipment 100 (e.g., an in-vehicle charging device for electric vehicles) . Herein, when the charging plug 10 is attached to the power socket 101 of the electric equipment 100 to supply electric power to the charging circuit 102 from the charging device 1, the charging circuit 102 charges a battery (a secondary battery) 103.
The power switch 7 is provided on the way of an internal conductive line connected to the power wire (e.g., the power wire L2) and turns on/off the power supply to the control circuit 2.
The relay 5 has relay contacts provided in the internal conductive lines connected to the power wires LI and L2, and the control circuit 4 controls ON/OFF operations of the relay contact 2a.
The zero-phase current transformer 6 is used for detecting an unbalanced current that flows through the power wires LI and L2 when an electric leakage occurs .
The control circuit 2 opens or closes the relay 5 based on control signals inputted from the charging circuit so that the power supply to the in-vehicle charger is turned off or on. Besides, when detecting the unbalanced current flowing through the zero-phase current transformer 6, the control circuit 2 opens the relay 2 to interrupt the power supply to the electric equipment 100. Consequently, a power circuit for controlling the power supply to the electric equipment 100 is constituted by the control circuit 2, the relay 5, and the like.
Next, a structure of the charging device 1 will be described with reference to Figs. 1, 2, and 4. Hereinafter, unless otherwise noted, up-down and right- left directions are defined based on the directions shown in Fig. 2B (the state in which the charging device 1 is installed on the wall) . In this case, the left-hand side and the right-hand side in Fig. 2C denote a front side and a rear side, respectively.
The device body 20 of the charging device 1 is made of a resin molded into an elongated rectangular parallelepiped shape, and is installed on a wall or the like for use. In the device body 20, a corner portion between a front surface and a lower surface thereof is cut to form an opening. In the opening, there is provided a recess 21 into which at least a portion of the charging plug 10 is inserted in a non-charging mode.
As shown in Figs. 2 and 4, the charging plug 10 includes: a connection part 11 with a cylindrical shape, which is adapted to be inserted into and connected to the power socket 101, at a tip end side thereof; and a lock claw 12 (latch part) to be engaged with a recess provided in the power socket 101. A handgrip 13 gripped by hand is provided in a rear portion of the charging plug 10. Further, in the connection part 11, there is provided a connection terminal (not shown) to be electrically connected to a terminal (not shown) disposed in the power socket 101.
In the recess 21, as shown in Figs. 1, 2, and 4, there is provided a plug holder 22 for holding the connection part 11 of the charging plug 10. The plug holder 22, molded of synthetic resin, is formed to have a tubular body whose one end (upper side) is closed and into which the connection part 11 is to be inserted. On an outer peripheral surface of the plug holder 22, a protrusion 25 to which the lock claw 12 of the charging plug 10 is to be fitted is provided on its front side. Around the opening of the plug holder 22 opposite to the closed end, inclined portions 26 and 26 are formed to expand outwardly as they go to their tip ends, and are disposed on both of right and left sides of the opening so as to avoid a portion where the lock claw 12 is to be inserted.
Further, as shown in Figs. 1 and 4, a pivotal shaft 23 is provided on a bottom wall 22a, which closes the one end of the plug holder 22. The plug holder 22 pivots together with the pivotal shaft 23. The pivotal shaft 23 is pivotally supported by a bearing part (not shown) provided in the device body 20. A spring 24 serving as an elastic member biases the pivotal shaft 23 (and the plug holder 22) to pivot clockwise, in Fig. IB. Accordingly, when the charging plug 10 is detached from the plug holder 22, the plug holder 22 is pivoted clockwise by the spring force of the spring 24 and then the opening of the plug holder 22 is protruded forwardly as shown in Fig. IB. Note that, in this state, the plug holder 22 comes into contact with an upper stopper (not shown) provided in the device body 20, which inhibits the plug holder 22 from further pivoting clockwise. On the other hand, when the charging plug 10 is attached to the plug holder 22 as shown in Fig. 4B, the plug holder 22 is pivoted counterclockwise by the weight of the charging plug 10 and then the opening of the plug holder 22 (and the charging plug 10) is protruded obliquely and downwardly as shown in Fig. 4C. Note that, in this state, the plug holder 22 comes into contact with a lower stopper (not shown) provided in the device body 20, which also inhibits the plug holder 22 from further pivoting counterclockwise.
On the inner side of the device body 20, the aforementioned power switch 7 is disposed near the recess 21 in which the plug holder 22 is provided. The power switch 7 has an operating handle 7a pivotally disposed and, by pivoting the operating handle 7a clockwise or counterclockwise, the power switch 7 is turned on or off. Further, the power switch 7 is placed at the upper side of the recess 21 with the operating handle 7a directed downward (toward the recess 21) .
A plurality of light-emitting diodes LD1 to LD3 , which constitutes the aforementioned display unit 3, is disposed on the front surface of the device body 20 above the recess 21. ON/OFF of the light-emitting diodes LD1 to LD3 are controlled by the control circuit 2, and the operating conditions of the charging device 1 are displayed by the states of the respective light-emitting diodes LD1 to LD3 (ON, OFF, blinking, or the like) .
In the charging device 1 with such configuration, the charging plug 10 is attached to the plug holder 22 when the charging device 1 is not used to charge the electric equipment 100. As described above, when the charging plug 10 is detached from the plug holder 22, the plug holder 22 is protruded forwardly (in a forward direction in the state where the device body 20 is installed) from the device body 20 as shown in Figs. 1A, IB, and 4A. Therefore, it becomes easier for a user to insert the connection part 11 of the charging plug 10 into the plug holder 22. When the user grips the handgrip 13 of the charging plug 10 and inserts the connection part 11 of the charging plug 10 into the plug holder 22, the lock claw 12 is engaged with the protrusion 25 to hold the charging plug 10 in the plug holder 22 (see Fig. 4B) . In this state, when the user releases his/her hand from the handgrip 13 , the weight of the charging plug 10 is applied to the plug holder 22 and then the plug holder 22 is pivoted counterclockwise, whereby the plug holder 22 remains protruded obliquely and downwardly (see Fig. 4C) .
As described above, the plug holder 22 is configured to hold the charging plug 10 by the lock claw 12 of the charging plug 10 being engaged with the protrusion 25 and to be pivotable between one state in which the plug holder 22 is protruded forwardly from the device body 20 and the other state in which the plug holder 22 is protruded obliquely and downwardly. When no charging plug 10 is attached, the plug holder 22 protrudes forwardly from the device body 20, thereby making it easy to insert the charging plug 10 into the plug holder 22. When the charging plug 10 is attached, the plug holder 22 protrudes obliquely and downwardly, thereby reducing an amount of the protrusion of the charging plug 10 as compared with the state where the plug holder 22 is protruded forwardly. This prevents the charging plug 10 from being obstacle. Further, in a non-charging mode, the charging plug 10 is held in the device body 20. Therefore, the charging plug 10 is avoided from being broken due to accidental stamping by a vehicle or the like.
The plug holder 22 is formed to have a tubular body into which the connection part 11 of the charging plug 10 is to be inserted. The connection part 11 inserted into the tube body of the plug holder 22 is held by the plug holder 22 with the opening of the plug holder 22 directed downward. Therefore, the connection part 11 serving as a charging part becomes hard to be wet with drops of water.
Further, the inclined portions 26 are formed around the opening of the plug holder 22. When being inserted into the plug holder 22, the connection part 11 comes into contact with the inclined portions 26 and, by the inclined portions 26, is guided into the tube body of the plug holder 22. This makes it easier to attach the charging plug 10 to the plug holder 22.
Furthermore, on the front surface of the device body 20, an extending portion 20a is provided, which serves as a rain cover. The extending portion 20a is protruded downwardly forwardly from an upper peripheral portion of the recess 21. Therefore, the charging plug 10 attached to the plug holder 22 is hard to be wet with drops of water.
According to the present embodiment, on the inner side of the device body 20, the operating handle 7a (an operation part) of the power switch 7 is disposed on the upper side of the recess 21 in which the plug holder 22 is provided. A user can put his/her finger into the recess 21 to operate the operating handle 7a (see Figs. IB and 4A) .
Since the operating handle 7a is not provided on the front surface of the apparatus body 20, the operating handle 7a is hard to be operated by mischievous or careless touching. This reduces the possibility of unintended operations of the charging device 1. Further, in charging the electric equipment 100, the charging plug 10 is detached from the recess 21 and connected to the power receiving socket 101 of the electric equipment 100. This makes it easy for a user to put his/her finger into the recess 21, so that the operating handle 7a disposed near the recess 21 on the inner side of the device body 20 can be operated easily. Accordingly, if an emergency situation happens in a charging mode and the power circuit is necessary to be separated from the electric equipment 100, the power supply to the electric equipment 100 can be turned off easily by operating the operating handle 7a disposed near the recess 21 on the inner side of the device body 20.
Further, in the present embodiment, the operating handle 7a is provided on the upper side of the recess 21 in the state where the charging device is installed.
Thus, the operating handle 7a is hidden by the device body 20 in the state where the charging device is installed, whereby the operating handle 7a is hard to be seen even when the charging plug 10 is detached from the plug holder 22. This further reduces the possibility that the operating handle 7a is operated by mischievous or careless touching. Besides, rain and dust are difficult to attach to the operating handle 7a, thereby preventing insulative deterioration and contamination of the power switch 7. According to the present embodiment, near the recess 21 on the inner side of the device body 20, there is provided the operating handle 7a of the power switch 7 serving as a shutoff operation part for shutting off an output of the power circuit . Another operation part other than the power switch 7, however, may be employed as long as it allows the power supply circuit to perform predetermined operation. The control circuit 2, for example, has an electric leakage breaking function that causes the relay 5 to open for shutting off the power supply to the electric equipment 100 when detecting the electric leakage based on the output of the zero-phase current transformer 6. Besides, in order to check whether or not the electric leakage breaking function operates normally, the control circuit 2 is provided with an input unit 4 having an electric leakage testing function that generates a pseudo- electric leakage to test the electric leakage breaking function. The input unit 4 may be disposed near the recess 21 on the inner side of the device body 20. In this case, like the above mentioned case, it is difficult to operate the input unit 4 by mischievous or careless touching. This reduces the possibility that the power circuit is operated unintentionally .
Meanwhile, in the above embodiment, the plug holder 22 is biased by the spring 24 provided at the pivotal shaft so as to protrude forwardly in the state where the charging device is installed, but the structure for pivoting the plug holder 22 is not limited to this. For instance, as shown in Figs. 5A and 5B, a pivotal shaft 23 is provided at a lower end of the bottom wall 22a. One end of a coil spring 28 may be connected to an upper end of the bottom wall 22a and the other end thereof may be connected to a supporting plate 20b provided in the device body 20. Note that, to simplify the drawings, the power switch 7 is omitted in Figs. 5A and 5B.
Also in this charging device 1, when no charging . plug 10 is attached to the plug holder 22, an upper part of the plug holder 22 is pulled backwardly by a tensile force of the spring 28, whereby the plug holder 22 is pivoted clockwise in Fig. 5 about the pivotal shaft 23. When coming into contact with the upper stopper (not shown) provided in the device body 20, the plug holder 22 is kept protruded forwardly in the state where the charging device is installed (see Fig. 5A) . Thus, the plug holder 22 remains protruded forwardly when no charging plug 10 is attached thereto. This makes it easier to insert the connection part 11 of the charging plug 10 into the plug holder 22.
The user grips the handgrip 13 of the charging plug 10 to attach the connection part 11 to the plug holder 22. After that, when the user releases his/her hand from the handgrip 13 , the plug holder 22 is pivoted counterclockwise in Fig. 5 about the pivotal shaft 23 due to the weight of the charging plug 10 greater than a recovery force of the coil spring 28. When coming into contact with the lower stopper (not shown) provided in the device body 20, the plug holder 22 is kept protruded obliquely and downwardly as shown in Fig. 5B. Thus, in the state where the charging plug 10 is attached to the plug holder 22, the charging plug 10 remains protruded obliquely and downwardly, thereby reducing an amount of the protrusion of the charging plug 10 as compared with the state where the plug holder 22 is protruded forwardly. This prevents the charging plug 10 from being obstacle.
When detaching the charging plug 10 held by the plug holder 22, the plug holder 22 is pivoted about the pivotal shaft 23 according to the movement of the user's hand that grips the handgrip 13 of the charging plug 10 from the state shown in Fig. 5B toward the state in which the opening of the plug holder 22 is directed forward as shown in Fig. 5A. As such, the plug holder 22 is pivoted upward according to the movement of the user's hand to the position where the charging plug 10 can be detached from the plug holder 22 with ease. Therefore, the charging plug 10 can be easily detached from the plug holder after the lock claw 12 is disengaged.
After the charging plug 10 is detached from the plug holder 22, the plug holder 22 is pivoted clockwise in Figs. 5A and 5B by the recovery force of the coil spring 28 because no weight of the charging plug 10 is applied. At this time, the plug holder 22 is brought into contact with the upper stopper (not shown) and kept in the forwardly protruded state. This makes it easy to insert the charging plug 10 into the plug holder 22.
Meanwhile, although the plug holder 22 is formed into a cylindrical shape in the charging device 1 described in Figs. 1A to 5B, a plate- like plug holder 27 may be employed as shown in Figs. 6A to 6C. Note that, to simplify the drawings shown in Figs. 6A to 6C, the power switch 7 is omitted.
The plug holder 27 is pivotally attached to the device body 20 via the pivotal shaft 23 and biased by a spring (not shown) so as to pivot clockwise. The plug holder 27 is inserted into a gap between the connection part 11 and the lock claw 12, and a protrusion 25 to be engaged with the lock claw 12 is provided on a surface of the plug holder 27 on the side of the lock claw 12.
Now, when the charging plug 10 is not attached to the plug holder 27, the plug holder 27 is biased by a spring (not shown) to pivot clockwise in Figs. 6A to 6C to a state where the plug holder 27 is protruded forwardly as shown in Fig. 6A. In this state, the plug holder 27 is not pivoted further clockwise by being brought into contact with the upper stopper (not shown) provided in the device body 20. On the other hand, as shown in Fig. 6B, when the user releases his/her hand from the charging plug 10 in the state where the charging plug 10 is held by the plug holder 27, the plug holder 27 is pivoted counterclockwise in Figs. 6A to 6C by the weight of the charging plug 10. And then, the plug holder 27 is pivoted counterclockwise until coming into contact with the lower stopper (not shown) provided in the device body 20, so that the plug holder 27 (and the charging plug 10) is protruded obliquely and downwardly as shown in Fig. 6C.
As described above, the protrusion 25 of the plug holder 27 is engaged with the lock claw 12 of the charging plug 10 in the state where the charging plug 10 is attached to the plug holder 27, and the plug holder 27 is pivotable between the state where the plug holder 27 is protruded forwardly and the state where the plug holder 27 is protruded obliquely and downwardly while holding the charging plug 10. When the charging plug 10 is not attached to the plug holder 27, the plug holder 27 is protruded forwardly from the device body 20, thereby making it easy to insert the charging plug 10 into the plug holder 27. Further, when the charging plug 10 is attached to the plug holder 27, the plug holder 27 is protruded obliquely and downwardly. In other words, the charging plug 10 remains protruded obliquely and downwardly, thereby reducing an amount of the protrusion of the charging plug 10 as compared with the state where the plug holder 22 is protruded forwardly. This prevents the charging plug 10 from being obstacle .
Further, although the plug holders 22 and 27 are biased by an elastic member to the state where the plug holders 22 and 27 are protruded forwardly in the charging device 1 described in Figs. 1A to 6C, the plug holder 22 may be biased by a weight 29 attached thereto as shown in Figs. 7A to 7D. Note that, to simplify the drawings shown in Figs 7A to 7D, the power switch 7 is omitted.
The plug holder 22 is formed into a substantially cylindrical shape whose one end is closed. Since the pivotal shaft 23 is provided at a lower end of the bottom wall 22a, the plug holder 22 is supported pivotally about the pivotal shaft 23. An arm 22b is protruded rearwardly from an upper end of the bottom wall 22a and the weight 29 is attached to a tip end of the arm 22b. The weight 29 is provided such that the center of gravity of the plug holder 22 locates on the right side of a vertical line L10 in the state where the plug holder 22 is protruded forwardly as shown in Fig. 7A. The plug holder 22 is biased by a weight of the weight 29 to pivot clockwise in Figs. 7A to 7D to a position at which the plug holder 22 is protruded forwardly. At that time, the plug holder 22 comes into contact with a stopper 30 provided in the device body 20, and the plug holder 22 is held at that position.
As described above, when the charging plug 10 is not attached to the plug holder 22, the plug holder 22 is kept in the position at which the plug holder 22 is protruded forwardly by the weight 29. This makes it easier to insert the connection part 11 of the charging plug 10 into the plug holder 22.
The user grips the handgrip 13 of the charging plug 10 to attach the connection part 11 to the plug holder 22 (see Fig. 7B) . After that, when the user releases his/her hand from the handgrip 13, the plug holder 22 is pivoted counterclockwise about the pivotal shaft 23 because the charging plug 10 is heavier than the weight 29. At this time, since the plug holder 22 comes into contact with a stopper 31 provided in the device body 22 as shown in Fig. 7C, the plug holder 22 remains protruded obliquely and downwardly, thereby reducing an amount of the protrusion of the charging plug 10 as compared with the state where the plug holder 22 is protruded forwardly. This prevents the charging plug 10 from being obstacle.
On the other hand, when detaching the charging plug 10 held by the plug holder 22, the plug holder 22 is pivoted about the pivotal shaft 23 according to the movement of the user's hand that grips the handgrip 13 of the charging plug 10 upward from the position shown in Fig. 7C (see Fig. 7D) . As such, the plug holder 22 is pivoted upwardly according to the movement of the user's hand to the position where the charging plug 10 can be detached from the plug holder 22 with ease. Therefore, the charging plug 10 can be easily detached after the lock claw 12 is disengaged.
When the charging plug 10 is detached from the plug holder 22 after the lock claw 12 is disengaged from the protrusion 25, the plug holder 22 is kept in the state where the plug holder 22 is protruded forwardly by the weight 29 because the weight of the charging plug 10 is not applied to the plug holder 22. Accordingly, the plug holder 22 remains protruded forwardly after the charging plug 10 is removed therefrom, so that it becomes easier to attach the charging plug 10 to the plug holder 22.
Further, although the plug holder 22 is biased by the spring or the weight to the position where the plug holder 22 is protruded forwardly in the charging device 1 described in Figs. 1A to 7D, the spring and the weight may be omitted as shown in Figs. 8A to 8D. Note that, to simplify the drawings shown in Figs. 8A to 8D, the power switch 7 is omitted .
The plug holder 22 is formed into a substantially cylindrical shape whose one end is closed. In an inner periphery of the other end of the plug holder 22, an inclined surface 22c is formed so as to enlarge its opening diameter as it goes to a tip end of the plug holder 22.
The plug holder 22, which is pivotally supported about the pivotal shaft 23, comes into contact with a stopper 32 provided in the device body 20, so that a pivotal range of the plug holder 22 pivoting counterclockwise in Figs. 8A to 8D is restricted. When coming into contact with the stopper 32, the plug holder 22 is not further pivoted counterclockwise. In other words, the plug holder 22 can pivot between the state in which the plug holder 22 is protruded forwardly and the state in which the plug holder 22 is protruded obliquely and downwardly.
In the state where the charging plug 10 is not attached to the plug holder 22, as shown in Fig. 8A, the plug holder 22 remains protruded obliquely and downwardly. When the user grips the handgrip 13 of the charging plug 10 and brings the connection part 11 closer to the plug holder 22 from its front side for the purpose of attaching the charging plug 10 to the plug holder 22, a tip end of the connection part 11 comes into contact with the inclined surface 22c (see Fig. 8B) . At this time, the connection part 11 pushes the inclined surface 22c to pivot the plug holder 22 according to the movement of the charging plug 10, so that the connection part 11 is inserted into the plug holder 22 (see Fig. 8C) . As described above, the inclined surface 22c is pushed by the charging plug 10 to pivot the plug holder 22 to a position where the charging plug 10 can be inserted into the plug holder 22 with ease. This makes it easier to attach the charging plug 10 to the plug holder 22 as compared with the case where the charging plug 10 is inserted from the below.
Subsequently, when the user releases his/her hand from the handgrip 13 of the charging plug 10, the plug holder 22 is pivoted counterclockwise in Figs. 8A to 8D about the pivotal shaft 23 by the weight of the charging plug 10. At this time, as shown in Fig. 8D, the plug holder 22 comes into contact with the stopper 32 and then the plug holder 22 remains protruded obliquely and downwardly, thereby reducing an amount of the protrusion of the charging plug 10 as compared with the state where the plug holder 22 is protruded forwardly. This prevents the charging plug 10 from being obstacle.
On the other hand, when detaching the charging plug 10 held by the plug holder 22, the plug holder 22 is pivoted about the pivotal shaft 23 according to the movement of the user's hand that grips the handgrip 13 of the charging plug 10 upward from the position shown in Fig. 8D. As such, the plug holder 22 is pivoted upwardly according to the movement of the user's hand to a position where the charging plug 10 can be detached therefrom with ease. Therefore, the charging plug 10 can be easily detached after the lock claw 12 is disengaged.
When the charging plug 10 is detached, the plug holder 22 is pivoted counterclockwise in Figs. 8A to 8D about the pivotal shaft 23 by its own weight and comes into contact with the stopper 32, whereby the plug holder 22 remains protruded obliquely and downwardly (see Fig. 8A) .
Further, although the plug holders 22 and 27 are pivotable in the charging device 1 described in Figs. 1A to 8D, as shown in Fig. 9, the charging plug 10 may be pivotable with respect to a plug holder 33 without pivoting the plug holder 33.
Fig. 9A is a front view of the charging device 1, and
Fig. 9B is a side view of the charging device 1. A plug holder 33 with a rod- like shape is bridged over the recess 21 so as to extend in the left-right direction. The present embodiment has the same configuration as that of the charging device 1 described in Figs. 1A to 4D except for the structure for holding the charging plug 10, the same reference numerals are assigned to the same components, and redundant description thereof will be omitted.
In the state where the charging plug 10 is held in the charging device 1, the rod- like plug holder 33 is interposed between the connection part 11 and the lock claw 12, whereby the plug holder 33 is engaged with the lock claw 12. Under this engagement state, the charging plug 10 is pivotable between one state in which the charging plug 10 is protruded forwardly from the device body 20 and the other state in which the charging plug 10 is protruded obliquely and downwardly .
In cases where the charging plug 10 is held in the charging device 1, the charging plug 10 is inserted into the recess 21 from the front of the charging device 1 and the rod-shaped plug holder 33 is engaged between the connection part 11 and the lock claw 12 (a position PI shown in Fig. 9B) . After the charging plug 10 is held in the charging device 1, when the user releases his/her hand from the charging plug 10, the charging plug 10 is pivoted about the plug holder 33 by its own weight and then protruded obliquely and downwardly (a position P2 shown in Fig. 9B) .
On the other hand, when detaching the charging plug 10 from the charging device 1, the charging plug 10 is pivoted about the plug holder 33 according to the movement of when the user's hand that grips the handgrip 13 of the charging plug 10, so that the charging plug 10 is pivoted clockwise from the position P2 in Fig. 9B. Thus, according to the movement of the user's hand, the charging plug 10 is pivoted about the plug holder 33 to a position where the charging plug 10 can be detached with ease, thereby making it easy to detach the charging plug 10 from the plug holder 33.
In this way, the charging plug 10 is inserted into the recess 21 from the front of the charging device 1 and then engaged with the rod-shaped plug holder 33. This makes it easy to attach the charging plug 10 to the plug holder 33. Further, the charging plug 10 is held in a state where it is protruded obliquely and downwardly, thereby reducing an amount of the protrusion of the charging plug 10 as compared with the state where the charging plug 10 is protruded forwardly. This prevents the charging plug 10 from being obstacle .

Claims

What is claimed is:
1. A charging device, comprising:
a power supply circuit for supplying electric power to an electric equipment provided with a secondary battery;
a charging plug connected to the power circuit via a power cable, the charging plug being adapted to be detachably connected to a power receiving socket of the electric equipment; and
a device body for holding the charging plug of which at least a portion is accommodated in a recess formed in a surface of the device body,
wherein an operation part for operating the power circuit to perform predetermined operations is disposed on an inner side of the device body.
2. The charging device as set forth in Claim 1, wherein the operation part is disposed on the upper side of the recess in a state where the charging device is installed.
3. The charging device as set forth in Claim 1 or 2, wherein the operation part is a shutoff operation part for shutting off an output of the power circuit.
4. The charging device as set forth in Claim 1 or 2, wherein the power circuit has an electric leakage breaking function that shuts off the power supply to the electric equipment when detecting an electric leakage; and the operation part has an electric leakage testing function that generates a pseudo-electric leakage to test the electric leakage breaking function.
PCT/IB2011/002175 2010-09-21 2011-09-20 Charging device WO2012038803A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010211318A JP5600534B2 (en) 2010-09-21 2010-09-21 Charger
JP2010-211318 2010-09-21

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Publication Number Publication Date
WO2012038803A1 true WO2012038803A1 (en) 2012-03-29

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TW201225442A (en) 2012-06-16
JP2012070493A (en) 2012-04-05
TWI419423B (en) 2013-12-11

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