WO2016129198A1 - 直流電力供給コネクタ及び直流電源装置 - Google Patents
直流電力供給コネクタ及び直流電源装置 Download PDFInfo
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- WO2016129198A1 WO2016129198A1 PCT/JP2015/086558 JP2015086558W WO2016129198A1 WO 2016129198 A1 WO2016129198 A1 WO 2016129198A1 JP 2015086558 W JP2015086558 W JP 2015086558W WO 2016129198 A1 WO2016129198 A1 WO 2016129198A1
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- 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
- H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
- H01H33/143—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc of different construction or type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/002—Monitoring or fail-safe circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
-
- 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
- H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
- H01R13/7036—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part the switch being in series with coupling part, e.g. dead coupling, explosion proof coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to undesired approach to, or touching of, live parts by living beings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
-
- 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
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
Definitions
- the present disclosure relates to a DC power supply connector and a DC power supply device.
- the power receiving side includes at least a positive electrode and a negative electrode for supplying DC power, and a DC current flows when at least one of the positive electrode side and the negative electrode side is supplied with the DC power.
- the first contact is brought into contact with the first contact, and when the terminal is not inserted, the movable contact piece is brought into contact with the second contact and the switching element.
- a current limiting circuit for reducing a current flowing through the movable contact to the terminal, and the current limiting circuit is configured such that the switching element is a current when the movable contact is in contact with the first contact. Current flows to the terminal through the movable contact until the movable contact leaves the first contact and is connected to the second contact, and the flowing current is gradually reduced. Power supply connector is provided.
- At least a DC power source that supplies DC power
- a positive electrode and a negative electrode that supply DC power from the DC power source, the positive electrode side or the negative electrode side
- At least one of the movable contacts is in contact with the first contact when the terminal on the power receiving side through which direct current flows when the DC power is supplied is inserted, and is in contact with the second contact when the terminal is not inserted.
- a current limiting circuit that includes a switching element and reduces a current that flows to the terminal through the movable contact when the terminal is removed, and the current limiting circuit includes the movable contact
- the switching element does not pass current, and the movable contact leaves the first contact and is connected to the second contact through the movable contact.
- Current flows to the serial terminal, reduces the current flowing slowly, the DC power supply device is provided.
- a new and improved DC power supply connector and DC power supply apparatus can be provided.
- FIG. 6 is an explanatory view showing a state where the plug 11 is inserted into the plug receiver 20.
- 3 is an explanatory diagram for explaining a function of a current limiting circuit 30.
- FIG. FIG. 5 is an explanatory diagram showing an equivalent circuit of the current limiting circuit 30 shown in FIG. 4.
- FIG. 5 is an explanatory diagram illustrating a transition example of current and voltage in the configuration example of the DC power supply device 100 illustrated in FIG. 4.
- 3 is an explanatory diagram showing power consumption of a current limiting circuit 30.
- FIG. 3 is an explanatory diagram illustrating a configuration example of a DC power supply device 100.
- FIG. 3 is an explanatory diagram illustrating a configuration example of a DC power supply device 100.
- FIG. 3 is an explanatory diagram illustrating a configuration example of a DC power supply device 100.
- Patent Documents 1 and 2 In the case of direct current power supply, there are other Patent Documents 1 and 2 as other techniques for suppressing the occurrence of arc discharge when power is cut off.
- Patent Document 1 discloses a technique for suppressing the occurrence of arc discharge by providing a switching element on a path through which a current flows during DC power supply and turning off the switching element when the plug is removed from the plug receptacle. Yes.
- Patent Document 2 also suppresses the occurrence of arc discharge by providing an arc absorption circuit including a switching element on a path through which a current flows during DC power supply, and turning off the switching element when the plug is removed from the plug receptacle.
- the technology is disclosed.
- the present disclosure has intensively studied a technology that can suppress the occurrence of arc discharge with a small-scale configuration when cutting off DC power without reducing the power efficiency when supplying DC power. went.
- the present disclosure provides two contacts on the positive electrode, and suppresses the voltage generated between the electrodes when the DC power is cut off when switching the contact with the power receiving electrode. Therefore, a technique is devised that can suppress the occurrence of arc discharge with a small-scale configuration when cutting off DC power without reducing power efficiency when supplying DC power, and can also suppress heat generation when cutting off DC power. It came to.
- FIG. 1 is an explanatory diagram illustrating a configuration example of a DC power supply system according to an embodiment of the present disclosure.
- FIG. 1 is an explanatory diagram illustrating a configuration example of a DC power supply system according to an embodiment of the present disclosure.
- FIG. 1 is an explanatory diagram illustrating a configuration example of a DC power supply system according to an embodiment of the present disclosure.
- FIG. 1 is an explanatory diagram illustrating a configuration example of a DC power supply system according to an embodiment of the present disclosure.
- FIG. 1 is an explanatory diagram illustrating a configuration example of a DC power supply system according to an embodiment of the present disclosure.
- FIG. 1 shows a configuration example of a DC power supply system 1 that includes a DC power supply device 100 that supplies DC power and a load 10 that receives DC power from the DC power supply device 100.
- the DC power supply device 100 is a power supply device that supplies DC power.
- the DC power supply device 100 may include a storage battery inside and supply DC power to the load 10, such as sunlight, wind power, geothermal heat, biomass, and other natural energy.
- the power generated by the power supply may be fed to the load 10 as DC power.
- the plug 11 When the load 10 receives DC power from the DC power supply device 100, the plug 11 is inserted into the plug receiver 20. When the supply of DC power from the DC power supply device 100 is stopped, the plug 11 is removed from the plug receiver 20. If suppression of arc discharge is not taken into consideration when the plug 11 is removed from the plug receptacle 20, the plug 11 and the plug receptacle 20 are damaged as described above.
- the DC power supply device 100 has a load from the DC power supply device 100 when the plug 11 is removed from the plug receptacle 20 in order to suppress arc discharge when the plug 11 is removed from the plug receptacle 20.
- 10 is provided with a current limiting circuit for suppressing the current flowing into the circuit 10.
- the current limiting circuit provided in the DC power supply device 100 supplies current. It has a configuration that does not flow. Further, when the plug 11 is removed from the plug receptacle 20, the current limiting circuit reduces the current flowing from the DC power supply device 100 to the load 10 while flowing the current from the DC power supply device 100 to the load 10 through the current limiting circuit. It works in the direction of
- the DC power supply device 100 by providing the DC power supply device 100 with the current limiting circuit as described above, it is possible to suppress the occurrence of arc discharge when the DC power is cut without reducing the power efficiency when supplying DC power. Moreover, since the current limiting circuit according to the present embodiment can be a small-scale circuit as will be described later, it is possible to suppress the occurrence of arc discharge when the DC power is cut off without increasing the circuit scale.
- the DC power supply device 100 in a state where the plug 11 of the load 10 is completely inserted into the plug receiver 20, DC power is supplied to the load 10 without passing through the current limiting circuit, and the plug 11 of the load 10 is supplied. Is removed from the plug receptacle 20, the DC power supply device 100 is provided with a mechanism that can be switched to supply DC power to the load 10 via the current limiting circuit. By providing such a mechanism in the DC power supply device 100, it is possible to suppress the occurrence of arc discharge when the DC power is cut off.
- the plug 11 of the load 10 when the plug 11 of the load 10 is removed from the plug receptacle 20, it is possible to immediately switch to supplying DC power to the load 10 via the current limiting circuit.
- the mechanism is provided in the DC power supply device 100. By providing such a mechanism in the DC power supply device 100, it is possible to suppress heat generation in the current limiting circuit when the plug 11 of the load 10 is removed from the plug receptacle 20, particularly heat generation in the switching element.
- FIG. 2 is an explanatory diagram illustrating a configuration example of the DC power supply device 100 according to an embodiment of the present disclosure.
- a configuration example of the DC power supply device 100 according to an embodiment of the present disclosure will be described with reference to FIG.
- the DC power supply device 100 includes contacts 20a, 20b, 23, 24, and 25, a movable contact piece 20c, a spring 21, and a current limiting circuit 30. , Including.
- the contacts 20 a and 20 b are provided inside the plug receiver 20.
- FIG. 2 shows a positive electrode side terminal 11a and a negative electrode side terminal 11b, which are a pair of electrodes of the plug 11.
- the contacts 20a and 20b are conductors for flowing current from the DC power supply device 100 to the load 10.
- the contacts 20 a and 20 b are conductors that allow current to flow from the DC power supply device 100 to the load 10 by being connected to the positive electrode side terminal 11 a and the negative electrode side terminal 11 b that are a pair of electrodes of the plug 11.
- the spring 21 is connected to the movable contact piece 20c.
- the contact 23 provided on the movable contact piece 20c is separated from the contact 24 and connected to the contact 25.
- the contact 23 provided on the movable contact piece 20 c is provided to be separated from the contact 25 and connected to the contact 24 by elastic force. Therefore, the movable contact piece 20 c is configured in the DC power supply device 100 as a return type switch using the elastic force of the spring 21.
- the movable contact piece 20 c is formed of a material that electrically connects the contact 20 a and the contact 23, and is a movable contact configured to be rotatable around a fulcrum 22 within a predetermined range.
- the movable contact piece 20c is connected to the spring 21 as described above, and is provided so that the contact 23 comes into contact with the contact 24 or the contact 25 by elastic force in accordance with the insertion and removal of the plug 11.
- FIG. 3 is an explanatory view showing a state in which the plug 11 is inserted into the plug receptacle 20.
- the spring 21 extends as shown in FIG. 3, and the contact 23 of the movable contact piece 20 c is separated from the contact 24 and is connected to the contact 25.
- the contact 23 is separated from the contact 24 and connected to the contact 25, a current flows from the DC power supply device 100 to the load 10.
- the current limiting circuit 30 does not pass a current when DC power is supplied from the DC power supply device 100 to the load 10, but when the contact 23 is separated from the contact 25 and is connected to the contact 24, a direct current is supplied. It is a circuit that functions to reduce the current flowing from the power supply apparatus 100 to the load 10.
- the current limiting circuit 30 In the current limiting circuit 30, no current flows when the plug 11 is completely inserted into the plug receiver 20 and the contact 23 is connected to the contact 25, and the positive terminal 11 a is connected to the contact 20 a. Current flows. Accordingly, since the current limiting circuit 30 does not pass a current when the plug 11 is completely inserted into the plug receiver 20, the DC power supply device 100 applies DC power to the load 10 without reducing the power efficiency when supplying DC power. Can be fed.
- the current limiting circuit 30 includes a MOSFET T1, a capacitor C1, a resistor R1, and a diode D1.
- the current limiting circuit 30 functions as a voltage integrating circuit by including the capacitor C1.
- the MOSFET T1 uses an n-type MOSFET (Metal Oxide Semiconductor Field Effect Transistor) in the present embodiment.
- the MOSFET T1 is provided on a path through which current flows from the DC power supply device 100 to the positive terminal 11a in a state where the contact 23 is in contact with the contact 24 (that is, in a state where the plug 11 is removed from the plug receiver 20). It is done.
- the capacitor C1 is provided between the drain terminal and the gate terminal of the MOSFET T1.
- the resistor R1 is provided between the gate terminal and the source terminal of the MOSFET T1. As shown in FIGS. 2 and 3, the capacitor C1 and the resistor R1 are connected in series.
- the current limiting circuit 30 is bypassed in a path through which current flows from the DC power supply device 100 to the positive terminal 11a. Therefore, when the plug 11 is completely inserted into the plug receiver 20, no current flows through the current limiting circuit 30. Therefore, in the state where the plug 11 is completely inserted into the plug receiver 20, power is not consumed by the current limiting circuit 30.
- the contact 23 is connected from the contact 25 to the contact 24 by the elastic force of the spring 21.
- current concentration occurs at a part of the contact point between the positive terminal 11a and the contact 20a.
- the gate voltage of the MOSFET T1 is induced through the capacitor C1 to turn on the MOSFET T1.
- the voltage between the drain terminal and the source terminal of MOSFET T1 falls within the voltage along the transfer function of the FET gate voltage.
- the contact 23 is switched to connect from the contact 25 to the contact 24 by the elastic force of the spring 21. Then, electric charges are accumulated in the capacitor C1.
- the gate voltage of the MOSFET T1 decreases and the MOSFET T1 shifts to the off state.
- the positive electrode side terminal 11a moves away from the contact 20a after the MOSFET T1 is turned off, no current flows through the MOSFET T1, so that no arc discharge occurs.
- the diode D1 connected in parallel to the resistor R1 of the current limiting circuit 30 has the charge accumulated in the capacitor C1 not via the resistor R1 when the contact 23 is switched to connect from the contact 25 to the contact 24. It is provided to discharge in a short time.
- the diode D1 is provided in parallel with the resistor R1, so that even if the connection between the contact 23 and the contact 24 or the contact 25 causes chattering or the like, the current limiting circuit 30 The voltage integration function can be restored in a short time.
- the resistor R1 supplies a voltage to the gate terminal of the MOSFET T1, and the voltage supply time is determined by the product relationship between the capacitance of the capacitor C1 and the resistance value of the resistor R1.
- the DC power supply device 100 includes the current limiting circuit 30 as shown in FIG. 2 and the movable contact piece 20c so as to come into contact with the contactor 24 or the contactor 25 in accordance with the insertion / extraction of the plug 11. The effect of will be described.
- FIG. 4 is an explanatory diagram illustrating a configuration example of the DC power supply device 100, and is an explanatory diagram illustrating a function of the current limiting circuit 30.
- FIG. 4 shows a single-pole double-throw switch when the load 10 is disconnected from the DC power supply device 100 instead of disconnecting the load 10 from the DC power supply device 100 by inserting and removing the plug 11 in order to simplify the explanation. It is a structural example of the DC power supply device 100 using SW.
- the current limiting circuit 30 can suppress the occurrence of arc discharge and spark (thermal arc).
- FIG. 5 is an explanatory diagram showing an equivalent circuit of the current limiting circuit 30 shown in FIG.
- Rx is the resistance of the DC power supply device 100
- RI is the resistance of the load 10
- i is the current
- the voltage V is (Rx + RI) ⁇ i.
- FIG. 6 is an explanatory diagram showing a transition example of current and voltage in the configuration example of the DC power supply device 100 shown in FIG.
- the conduction plate of the single-pole double-throw switch SW and the b contact are connected at time t3 in FIG. 6, the gate voltage Vg of the MOSFET T1 becomes 0 V, and the DC power supply The current i2 flowing from the device 100 to the load 10 is interrupted.
- the voltage integration ends when the conductive plate returns to the b contact.
- the DC power supply device 100 shown in FIG. 4 prevents the current limiting circuit 30 from operating when the voltage V0 of the DC power supply device 100 is applied to the load 10 as an initial state.
- the DC power supply device 100 shown in FIG. 4 can secure a distance where the conductive plate is sufficiently separated from the contact a during the OFF operation of the single-pole double-throw switch SW, and no arc discharge occurs even when the contact plate is separated to the contact b.
- the operation of the current limiting circuit 30 is stopped to suppress unnecessary power consumption and to suppress the heat generation of the MOSFET T1 that is a switching element.
- FIG. 7 is an explanatory diagram showing the power consumption of the current limiting circuit 30.
- the power consumption of the current limiting circuit 30 becomes maximum at the center of voltage integration. Therefore, the current is cut off before the center of the voltage integration, that is, when the ultimate voltage is less than 50% (at the time of about 20% in the example of FIG. 7), thereby suppressing the power consumption in the current limiting circuit 30. It is done.
- FIG. 8 is an explanatory diagram illustrating an example of changes in voltage and current when the plug 11 is removed from the DC power supply device 100.
- the voltage change of the voltage V1 across the current limiting circuit 30 and the voltage V2 applied to the load 10 are illustrated.
- FIG. 5 is an explanatory diagram showing a change in voltage and a temporal change in currents i1 and i2 in FIG.
- FIG. 8 shows an example of changes in voltage and current when the plug 11 is removed from the DC power supply device 100 without using the single-pole double-throw switch SW as shown in FIG.
- the both-end voltage V1 of the current limiting circuit 30 maintains a constant voltage, but when the plug 11 is removed, the both-end voltage V1 gradually increases and the voltage V2 applied to the load 10 gradually decreases.
- the current i1 flowing to the contact 20a side rapidly decreases to 0A
- the current i2 flowing to the contact 20b side rapidly increases from 0A.
- the current i1 rapidly decreases to 0A and the current i2 rapidly increases from 0A, so that the current limiting circuit 30 suppresses the generation of a potential difference between the positive terminal 11a and the contact 20a.
- the voltage V2 and current i2 applied to the load 10 are decreasing, and the condition for current concentration between the positive terminal 11a and the contact 20b is eliminated. Therefore, even if the positive electrode side terminal 11a is separated from the contact 20a, arc discharge does not occur.
- the voltage integration ends when the conductive plate returns to the b contact.
- the current limiting circuit 30 continues integration until the voltage value becomes equal to the supply voltage of the DC power supply device 100.
- the voltage integration is finished when the conductive plate returns to the b contact. Since the voltage integration ends when the conductive plate returns to the b contact, in the circuit using two contacts as shown in FIG. 4, the current limiting circuit 30 is used when the plug 11 is removed from the DC power supply device 100. It becomes possible to suppress the heat generation.
- an n-type MOSFET is used as the MOSFET T1
- the current limiting circuit 30 having a voltage integration function is disposed on the positive electrode side.
- a current limiting circuit 30 having a voltage integration function may be arranged on the negative electrode using a p-type MOSFET.
- the movable contact piece 20c is provided in the DC power supply device 100 as a return type switch using the elastic force of the spring 21, but the present disclosure is not limited to such an example.
- a button is provided on the DC power supply device 100, and when the plug 11 is inserted and removed, the button 11 is operated by the plug 11 so that the contact point of the movable contact piece 20c is switched between the contact 24 and the contact 25. Also good.
- FIG. 9 is an explanatory diagram illustrating a configuration example of the DC power supply device 100 according to an embodiment of the present disclosure.
- the DC power supply device 100 shown in FIG. 9 includes a contact 20a and a movable contact piece 20c as snap switches, and the contact 20a can be rotated within a predetermined range in accordance with the insertion of the plug 11. Has been.
- the contact 20 a is positioned on the near side (position indicated by the solid line in FIG. 9) by the elastic force of the spring 21.
- the movable contact piece 20c is in contact with the contact 24 because the contact 20a is positioned on the near side. Since the movable contact piece 20 c is in contact with the contact 24, the DC power supply device 100 is in a state where the current flowing to the load 10 is limited by the current limiting circuit 30.
- the movable contact piece 20c comes into contact with the contact 25.
- the DC power supply device 100 can flow the current to the load 10 by bypassing the current limiting circuit 30.
- the gate-source of the MOSFET T1 is short-circuited, and the capacitor C1 Current flows only through.
- the contact 20a When the plug 11 is removed from the plug receptacle 20 of the DC power supply device 100, the contact 20a is returned to the near side by the elastic force of the spring 21. When the contact 20a returns to the near side, the movable contact piece 20c comes into contact with the contact 24 again. When the movable contact piece 20c comes into contact with the contactor 24, the DC power supply device 100 passes a current to the load 10 through the current limiting circuit 30, and the current decreases with time as shown in FIG.
- the current limiting circuit 30 is used by using the elastic force of the spring 21.
- the contact point of the movable contact piece 20c can be switched from the contact 25 to the contact 24 without waiting for the current interruption time in FIG.
- the DC power supply device 100 uses the elastic force of the spring 21 to change the contact point of the movable contact piece 20 c from the contact 25 to the contact 24 without waiting for the current interruption time in the current limiting circuit 30.
- heat generation in the current limiting circuit 30 when the plug 11 is removed from the plug receptacle 20 of the DC power supply device 100 particularly heat generation in the MOSFET T1 of the switching element can be suppressed.
- FIG. 9 shows an example in which the contact 20a and the movable contact piece 20c are configured as a snap switch using the elastic force of the spring 21, the present disclosure is not limited to such an example.
- the contactor 20a and the movable contact piece 20c may be configured as a seesaw type toggle switch, and the contactor 20a and the movable contact piece 20c may be configured as a spring reversal type toggle switch.
- FIG. 10 is an explanatory diagram illustrating a configuration example of the DC power supply device 100 according to an embodiment of the present disclosure.
- the DC power supply device 100 shown in FIG. 10 includes a contact 20a and a movable contact 20c as microswitches, and is configured so that the contact 20a is pressed within a predetermined range in accordance with insertion of the plug 11. Yes.
- the operation of the DC power supply device 100 shown in FIG. 10 will be described.
- the contact 20 a is not pushed down by the elastic force of the spring 21, and the movable contact piece 20 c comes into contact with the contact 24. Yes. Since the movable contact piece 20 c is in contact with the contact 24, the DC power supply device 100 is in a state where the current flowing to the load 10 is limited by the current limiting circuit 30.
- the movable contact piece 20c comes into contact with the contact 25.
- the DC power supply device 100 can flow the current to the load 10 by bypassing the current limiting circuit 30.
- the gate-source of the MOSFET T1 is short-circuited, and the capacitor C1 Current flows only through.
- the contact 20a When the plug 11 is removed from the plug receptacle 20 of the DC power supply device 100, the contact 20a is returned to the near side by the elastic force of the spring 21. When the contact 20a returns to the near side, the movable contact piece 20c comes into contact with the contact 24 again. When the movable contact piece 20c comes into contact with the contactor 24, the DC power supply device 100 passes a current to the load 10 through the current limiting circuit 30, and the current decreases with time as shown in FIG.
- the contact 20 a and the movable contact piece 20 c of the DC power supply device 100 are configured as microswitches, so that when the plug 11 is removed from the plug receiver 20 of the DC power supply device 100, Using the elastic force of the spring 21, the contact point of the movable contact piece 20 c can be switched from the contact 25 to the contact 24 without waiting for the current interruption time in the current limiting circuit 30.
- the DC power supply device 100 shown in FIG. 10 switches the contact point of the movable contact piece 20c from the contact 25 to the contact 24 without waiting for the current cut-off time in the current limiting circuit 30, so that the plug 11 is connected to the DC power supply. It is possible to suppress heat generation in the current limiting circuit 30 when it is removed from the plug receiver 20 of the device 100, particularly heat generation in the MOSFET T1 of the switching element.
- FIG. 10 shows an example in which the contact 20a and the movable contact piece 20c are configured as micro switches using the elastic force of the spring 21, the present disclosure is not limited to such an example.
- the contact 20a and the movable contact 20c may be configured as a coil spring type microswitch, and the contact 20a and the movable contact 20c may be configured as a reversing spring type microswitch.
- the DC power supply device 100 when the plug 11 is removed from the DC power supply device 100 while the DC power supply is being performed from the DC power supply device 100 to the load 10, the DC power supply device 100 There is provided a DC power supply device 100 including a current limiting circuit 30 that functions to gradually reduce the current flowing to the load 10 and can suppress the occurrence of arc discharge when the plug 11 is removed from the DC power supply device 100. .
- the current limiting circuit 30 does not flow current when the plug 11 is completely inserted into the DC power supply device 100.
- the current limiting circuit 30 consumes power when DC power is supplied from the DC power supply device 100 to the load 10 by not allowing current to flow when the plug 11 is completely inserted into the DC power supply device 100. Therefore, the power supply efficiency is not reduced.
- the current limiting circuit 30 accumulates charges in the capacitor C1 due to a current generated by a potential difference generated between the drain and source of the MOSFET T1 when the plug 11 is removed from the DC power supply device 100, and accumulates the charge in the capacitor C1. As a result, the gate voltage of the MOSFET T1 is increased to turn on the MOSFET T1.
- the current limiting circuit 30 allows the current from the DC power supply 100 to the load 10 to flow through the MOSFET T1 when the MOSFET T1 is turned on by the accumulation of electric charge in the capacitor C1, so that the electrode of the plug 11 is in contact with the current limit circuit 30 until then. It is possible to suppress the occurrence of a potential difference between the contactor and the arc discharge when the plug 11 is removed from the DC power supply device 100.
- the DC power supply device 100 supplies DC power to the load 10 without passing through the current limiting circuit 30 in a state where the plug 11 of the load 10 is completely inserted into the plug receiver 20.
- the movable contact piece 20 c that can be switched to supply DC power to the load 10 via the current limiting circuit 30 is provided.
- the movable contact piece 20c is provided in the DC power supply device 100 as a return-type switch using the elastic force of the spring 21.
- the direct-current power supply device 100 includes the movable contact piece 20c that operates as described above according to the insertion / extraction of the plug 11 without waiting for a current interruption time in the current limiting circuit 30.
- the contact point of the movable contact piece 20c can be switched from the contact 25 to the contact 24.
- the DC power supply device 100 uses the elastic force of the spring 21 to contact the contact point of the movable contact piece 20c from the contact 25 without waiting for the current interruption time in the current limiting circuit 30.
- the positive electrode or the negative electrode has the movable contact piece in contact with the first contact with the terminal inserted, and the movable contact piece with the second contact without the terminal inserted.
- the direct-current power supply connector according to any one of (1) to (4), which is brought into contact with (6)
- the current limiting circuit reduces a potential difference between a positive electrode and a negative electrode of a device that receives the DC power by gradually increasing a potential difference between the first contact and the second contact
- the DC power supply connector according to any one of (1) to (5), wherein a current flowing between the movable contact piece and the terminal is reduced.
- the switching element is turned on when the movable contact is not connected to the first contact, and the terminal is connected to the terminal through the movable contact in a state where the movable contact is connected to the second contact.
- the direct current power supply connector according to (6) wherein the current flowing to the power source is reduced.
- the current limiting circuit starts charging when the movable contact is not connected to the first contact, and the gate voltage of the switching element is connected to the second contact when the movable contact is connected to the second contact.
- the direct-current power supply connector according to (7) further including a capacitive element that raises the voltage.
- a DC power supply device in which a current flows to the terminal through the movable contact piece until the connection is established, and the flowing current is gradually reduced.
- DC power supply system 10 Load 11: Plug 11a: Positive terminal 11b: Negative terminal 20: Plug receptacle 20a, 20b: Contact 20c: Movable contact piece 21: Spring 22: Support points 23, 24, 25: Contact Child 30: Current limiting circuit 100: DC power supply device
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Abstract
Description
1.本開示の一実施形態
1.1.背景
1.2.構成例
2.まとめ
[1.1.背景]
本開示の一実施形態について詳細に説明する前に、まず本開示の一実施形態の背景について説明する。
まず、本開示の一実施形態に係る直流電力供給システムの構成例について説明する。図1は、本開示の一実施形態に係る直流電力供給システムの構成例を示す説明図である。以下、図1を用いて、本開示の一実施形態に係る直流電力供給システムの構成例について説明する。
以上説明したように本開示の一実施形態によれば、直流電源装置100から負荷10へ直流給電が行われている際に直流電源装置100からプラグ11が抜去されると、直流電源装置100から負荷10へ流れる電流を徐々に低下させる方向に機能し、直流電源装置100からプラグ11が抜去された際のアーク放電の発生を抑制できる電流制限回路30を備えた直流電源装置100が提供される。
(1)
直流電力を供給する正極側電極及び負極側電極を少なくとも備え、
前記正極側電極側または負極側電極側の少なくともいずれかに、
前記直流電力の供給時に直流電流が流れる受電側の端子が挿入された状態では第1の接点に接触し、前記端子が挿入されていない状態では第2の接点に接触する可動接片と、
スイッチング素子を含み、前記端子が抜去される際に前記可動接片を通じて前記端子へ流れる電流を減少させる電流制限回路と、
が備えられ、
前記電流制限回路は、前記可動接片が前記第1の接点に接触している場合は前記スイッチング素子が電流を流さず、前記可動接片が前記第1の接点を離れ前記第2の接点に繋がるまでの間に前記可動接片を通じて前記端子へ電流が流れ、流れる電流を徐々に減少させる、直流電力供給コネクタ。
(2)
前記可動接片は弾性体の弾性力によって前記端子が挿入されていない状態では前記第2の接点に接触する、前記(1)に記載の直流電力供給コネクタ。
(3)
前記可動接片は、前記が弾性体の弾性力を用いたスナップスイッチとして構成される、前記(2)に記載の直流電力供給コネクタ。
(4)
前記可動接片は、前記が弾性体の弾性力を用いたマイクロスイッチとして構成される、前記(2)に記載の直流電力供給コネクタ。
(5)
前記正極側電極または前記負極側電極は、前記端子が挿入された状態で前記可動接片を第1の接点に接触させ、前記端子が挿入されていない状態で前記可動接片を第2の接点に接触させる、前記(1)~(4)のいずれかに記載の直流電力供給コネクタ。
(6)
前記電流制限回路は、前記第1の接点と前記第2の接点との間の電位差を徐々に上昇させることで前記直流電力を受電する機器の正極と負極との間の電位差を減少させ、前記可動接片と前記端子との間に流れる電流を減少させる、前記(1)~(5)のいずれかに記載の直流電力供給コネクタ。
(7)
前記スイッチング素子は、前記可動接片が前記第1の接点に接続されなくなった時点でオン状態になり、前記可動接片が前記第2の接点に接続された状態で前記可動接片を通じて前記端子へ流れる電流を減少させる、前記(6)に記載の直流電力供給コネクタ。
(8)
前記電流制限回路は、前記可動接片が前記第1の接点に接続されなくなった時点で充電が開始され、前記可動接片が前記第2の接点に接続された状態で前記スイッチング素子のゲート電圧を上昇させる容量素子を備える、前記(7)に記載の直流電力供給コネクタ。
(9)
直流電力を供給する直流電源と、
前記直流電源からの直流電力を供給する正極側電極及び負極側電極と、
を少なくとも備え、
前記正極側電極側または負極側電極側の少なくともいずれかに、
前記直流電力の供給時に直流電流が流れる受電側の端子が挿入された状態では第1の接点に接触し、前記端子が挿入されていない状態では第2の接点に接触する可動接片と、
スイッチング素子を含み、前記端子が抜去される際に前記可動接片を通じて前記端子へ流れる電流を減少させる電流制限回路と、
が備えられ、
前記電流制限回路は、前記可動接片が前記第1の接点に接触している場合は前記スイッチング素子が電流を流さず、前記可動接片が前記第1の接点を離れ前記第2の接点に繋がるまでの間に前記可動接片を通じて前記端子へ電流が流れ、流れる電流を徐々に減少させる、直流電源装置。
10 :負荷
11 :プラグ
11a :正極側端子
11b :負極側端子
20 :プラグ受け
20a、20b :接触子
20c :可動接片
21 :バネ
22 :支点
23、24、25 :接触子
30 :電流制限回路
100 :直流電源装置
Claims (9)
- 直流電力を供給する正極側電極及び負極側電極を少なくとも備え、
前記正極側電極側または負極側電極側の少なくともいずれかに、
前記直流電力の供給時に直流電流が流れる受電側の端子が挿入された状態では第1の接点に接触し、前記端子が挿入されていない状態では第2の接点に接触する可動接片と、
スイッチング素子を含み、前記端子が抜去される際に前記可動接片を通じて前記端子へ流れる電流を減少させる電流制限回路と、
が備えられ、
前記電流制限回路は、前記可動接片が前記第1の接点に接触している場合は前記スイッチング素子が電流を流さず、前記可動接片が前記第1の接点を離れ前記第2の接点に繋がるまでの間に前記可動接片を通じて前記端子へ電流が流れ、流れる電流を徐々に減少させる、直流電力供給コネクタ。 - 前記可動接片は弾性体の弾性力によって前記端子が挿入されていない状態では前記第2の接点に接触する、請求項1に記載の直流電力供給コネクタ。
- 前記可動接片は、前記が弾性体の弾性力を用いたスナップスイッチとして構成される、請求項2に記載の直流電力供給コネクタ。
- 前記可動接片は、前記が弾性体の弾性力を用いたマイクロスイッチとして構成される、請求項2に記載の直流電力供給コネクタ。
- 前記正極側電極または前記負極側電極は、前記端子が挿入された状態で前記可動接片を第1の接点に接触させ、前記端子が挿入されていない状態で前記可動接片を第2の接点に接触させる、請求項1に記載の直流電力供給コネクタ。
- 前記電流制限回路は、前記第1の接点と前記第2の接点との間の電位差を徐々に上昇させることで前記直流電力を受電する機器の正極と負極との間の電位差を減少させ、前記可動接片と前記端子との間に流れる電流を減少させる、請求項1に記載の直流電力供給コネクタ。
- 前記スイッチング素子は、前記可動接片が前記第1の接点に接続されなくなった時点でオン状態になり、前記可動接片が前記第2の接点に接続された状態で前記可動接片を通じて前記端子へ流れる電流を減少させる、請求項6に記載の直流電力供給コネクタ。
- 前記電流制限回路は、前記可動接片が前記第1の接点に接続されなくなった時点で充電が開始され、前記可動接片が前記第2の接点に接続された状態で前記スイッチング素子のゲート電圧を上昇させる容量素子を備える、請求項7に記載の直流電力供給コネクタ。
- 直流電力を供給する直流電源と、
前記直流電源からの直流電力を供給する正極側電極及び負極側電極と、
を少なくとも備え、
前記正極側電極側または負極側電極側の少なくともいずれかに、
前記直流電力の供給時に直流電流が流れる受電側の端子が挿入された状態では第1の接点に接触し、前記端子が挿入されていない状態では第2の接点に接触する可動接片と、
スイッチング素子を含み、前記端子が抜去される際に前記可動接片を通じて前記端子へ流れる電流を減少させる電流制限回路と、
が備えられ、
前記電流制限回路は、前記可動接片が前記第1の接点に接触している場合は前記スイッチング素子が電流を流さず、前記可動接片が前記第1の接点を離れ前記第2の接点に繋がるまでの間に前記可動接片を通じて前記端子へ電流が流れ、流れる電流を徐々に減少させる、直流電源装置。
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JP2016574641A JP6662308B2 (ja) | 2015-02-13 | 2015-12-28 | 直流電力供給コネクタ及び直流電源装置 |
US15/548,547 US10454224B2 (en) | 2015-02-13 | 2015-12-28 | DC power supply connector and DC power source device |
EP15882071.2A EP3258548B1 (en) | 2015-02-13 | 2015-12-28 | Direct current power supply connector |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005294080A (ja) * | 2004-03-31 | 2005-10-20 | Shindengen Electric Mfg Co Ltd | 直流コンセント |
JP2011003409A (ja) * | 2009-06-18 | 2011-01-06 | Panasonic Electric Works Co Ltd | 直流コンセント |
JP2011034687A (ja) * | 2009-07-29 | 2011-02-17 | Panasonic Electric Works Co Ltd | 配線装置、スイッチ、プラグおよびコンセント |
Family Cites Families (6)
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US4686478A (en) * | 1985-06-05 | 1987-08-11 | Westinghouse Electric Corp. | Testing device for detecting contact chatter in electrical components with movable contacts, such as relays |
JP3819300B2 (ja) | 2002-01-08 | 2006-09-06 | 日本電信電話株式会社 | 直流コンセント |
JP5622235B2 (ja) * | 2010-11-30 | 2014-11-12 | 松尾博文 | 直流プラグ |
DE102011109920B4 (de) | 2011-08-10 | 2021-10-07 | Ellenberger & Poensgen Gmbh | Mechatronisches Mehrfachstecksystem |
US9859665B2 (en) * | 2013-03-29 | 2018-01-02 | Schneider Electric It Corporation | High voltage and high current power outlet |
JP5862818B1 (ja) * | 2015-01-30 | 2016-02-16 | ソニー株式会社 | 電流制限回路、直流電力供給コネクタ及び直流電源装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2005294080A (ja) * | 2004-03-31 | 2005-10-20 | Shindengen Electric Mfg Co Ltd | 直流コンセント |
JP2011003409A (ja) * | 2009-06-18 | 2011-01-06 | Panasonic Electric Works Co Ltd | 直流コンセント |
JP2011034687A (ja) * | 2009-07-29 | 2011-02-17 | Panasonic Electric Works Co Ltd | 配線装置、スイッチ、プラグおよびコンセント |
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