WO2017221561A1 - Circuit à courant continu, corps mobile et système d'alimentation électrique - Google Patents

Circuit à courant continu, corps mobile et système d'alimentation électrique Download PDF

Info

Publication number
WO2017221561A1
WO2017221561A1 PCT/JP2017/017392 JP2017017392W WO2017221561A1 WO 2017221561 A1 WO2017221561 A1 WO 2017221561A1 JP 2017017392 W JP2017017392 W JP 2017017392W WO 2017221561 A1 WO2017221561 A1 WO 2017221561A1
Authority
WO
WIPO (PCT)
Prior art keywords
current
circuit
fuse
switch
current path
Prior art date
Application number
PCT/JP2017/017392
Other languages
English (en)
Japanese (ja)
Inventor
直 森田
Original Assignee
ソニー株式会社
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 ソニー株式会社 filed Critical ソニー株式会社
Priority to JP2018523572A priority Critical patent/JP6977721B2/ja
Publication of WO2017221561A1 publication Critical patent/WO2017221561A1/fr

Links

Images

Classifications

    • 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
    • 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
    • H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle

Definitions

  • the present disclosure relates to a DC circuit, a moving body, and a power supply system.
  • the generation of arc discharge is suppressed with a small-scale configuration when the DC power is cut off without reducing the power efficiency when supplying DC power, and the semiconductor switch is used when the semiconductor switch is used to suppress arc discharge.
  • a new and improved DC circuit, moving body and power supply system capable of ensuring safety even when a short circuit occurs due to deterioration of a switch are proposed.
  • the first current path and the second current path provided in parallel in the path through which direct current flows and the first switch provided on the first current path are used to generate the second current.
  • a first current path and a second current path provided in parallel in a path through which direct current flows, a first current fuse provided on the first current path, and the first current path On the current path, at least two thermal fuses provided in parallel with the first current fuse, and two diodes provided alternately in parallel downstream of the first current fuse and the at least two thermal fuses;
  • a resistor provided between the two thermal fuses and a circuit for passing a pulsed current for a predetermined period when a direct current is interrupted in the second current path; and a second current fuse provided in parallel with the resistor
  • the second current fuse has a rating that does not blow at the temperature of the resistor due to the flow of a rated energization current during the rated energization time of the circuit.
  • DC circuit is provided.
  • the first current path and the second current path provided in parallel in a path through which direct current flows and the second switch using the first switch provided on the first current path.
  • a moving object including the DC circuit is provided.
  • a power supply system is provided.
  • FIG. 5 is an explanatory diagram illustrating an operation of a DC circuit according to an embodiment of the present disclosure.
  • FIG. 3 is an explanatory diagram illustrating an example of a functional configuration of a moving body 40 including a DC circuit 100.
  • FIG. 3 is an explanatory diagram illustrating an example of a functional configuration of a moving body 40 including a DC circuit 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.
  • the inventors have devised a technique that can suppress the occurrence of arc discharge with a small-scale configuration when the DC power is cut without reducing the power efficiency when supplying DC power.
  • the present disclosure has intensively studied a technology capable of ensuring safety even when a short circuit occurs due to deterioration of the semiconductor switch when the semiconductor switch is used for suppressing arc discharge.
  • the present disclosure has devised a technique that can ensure safety even when a short circuit occurs due to deterioration of the semiconductor switch when the semiconductor switch is used to suppress arc discharge. It was.
  • FIG. 1 is an explanatory diagram illustrating a configuration example of a DC circuit according to an embodiment of the present disclosure.
  • FIG. 1 shows a configuration example of a DC circuit for the purpose of suppressing arc discharge when the DC power supplied from the DC power supply is cut off.
  • FIG. 1 shows a configuration example of a DC circuit for the purpose of suppressing arc discharge when the DC power supplied from the DC power supply is cut off.
  • the DC circuit 100 shown in FIG. 1 is provided on a path through which DC power is supplied from a DC power supply (not shown) to the load 10.
  • the DC power supply outputs DC power having a predetermined voltage Vs.
  • the DC circuit 100 shown in FIG. 1 is provided between the positive electrode side of the DC power source and the load 10.
  • the DC circuit 100 has a configuration that suppresses the occurrence of arc discharge when a DC current from a DC power supply is interrupted.
  • the DC circuit 100 includes a MOSFET T1, a capacitor C1, a resistor R1, a diode D1, a switch SW1, and a switch circuit 110.
  • the switch circuit 110 includes a switch FS1 and a fuse F1.
  • the DC circuit 100 allows a current to flow through the main system and the sub system that are parallel in the path through which the DC flows.
  • a system in which the switch SW1 is provided is a main system, and a system in which the MOSFET T1 is provided is a sub system.
  • the MOSFET T1, the capacitor C1, the resistor R1, and the diode D1 function as a voltage integrating circuit.
  • the MOSFET T1 uses an n-type MOSFET (Metal Oxide Semiconductor Field Effect Transistor) in the present embodiment.
  • 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.
  • the capacitor C1 and the resistor R1 are connected in series.
  • the circuit composed of the MOSFET T1, the capacitor C1, the resistor R1, and the diode D1 is a circuit provided for suppressing a current flowing from the DC power source to the load 10 when the switch SW1 is switched from the on state to the off state.
  • the MOSFET T1 When the switch SW1 is in the off state, the MOSFET T1 is also in the off state, so that no current flows from the DC power source to the load 10. Thereafter, when the switch SW1 is operated and the state of the switch SW1 shifts to the ON state, a current flows from the DC power source to the load 10, but in this state, the MOSFET T1 is continuously in the OFF state, and the current is not supplied to the MOSFET T1. Does not flow.
  • the MOSFET T1 is turned on, and a current flows in a direction to decrease the voltage across the switch SW1 from the DC power source toward the load 10, whereby the voltage across the switch SW1 is reduced. By reducing the voltage across the switch SW1, the switch SW1 does not cause arc discharge even when the switch SW1 is turned off.
  • 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 switch SW1 is turned off and the capacitor C1 is charged by the voltage generated at both ends of the switch SW1
  • the gate voltage of the MOSFET T1 is lowered, and the MOSFET T1 is turned off so that a current flows through the MOSFET T1. Disappear.
  • the diode D1 connected in parallel with the resistor R1 of the DC circuit 100 is used for discharging the charge accumulated in the capacitor C1 in a short time without going through the resistor R1 when the switch SW1 shifts from the off state to the on state. Provided.
  • the diode D1 is provided in parallel with the resistor R1, so that the voltage integration function of the DC circuit 100 can be restored in a short time even if the connection of the switch SW1 causes chattering or the like.
  • 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 circuit 100 has a switch FS1 and a fuse F1 as shown in FIG.
  • the switch FS1 is in a state where the terminal a1 which is a common terminal and the terminal a2 which is a fixed contact are electrically connected by a movable contact when the switch FS1 is normal (which means that the fuse F1 is not blown). Yes.
  • the movable contact of the switch FS1 has an elastic force, and when the fuse F1 is blown as will be described later, the terminals a1 and a2 are not electrically connected.
  • the fuse F1 is blown when an excessive current flows in the sub system in which the MOSFET T1 is provided.
  • the switch FS1 loses the holding force by the fuse F1 and electrically opens the terminal a1 and the terminal a2.
  • FIG. 2 is an explanatory diagram showing the DC circuit 100 in a state where the fuse F1 is blown.
  • the switch FS1 loses the holding force by the fuse F1 as shown in FIG. 2, and the terminals a1 and a2 are electrically opened.
  • the rated energization time of the fuse F ⁇ b> 1 (time until fusing) after the switch SW ⁇ b> 1 is switched from the on state to the off state and the MOSFET T ⁇ b> 1 is turned on. If the MOSFET T1 is turned off in a shorter time, the fuse F1 is not blown.
  • the MOSFET T1 is turned off in a time shorter than the fusing time of the fuse F1 after the switch SW1 is switched from the on state to the off state due to an abnormal state, that is, the MOSFET T1 breaks down and the MOSFET T1 is turned on. If not, current continues to flow through the fuse F1, and the fuse F1 is blown.
  • FIG. 3 is an explanatory diagram showing the time change of the current flowing through the fuse F1 in a graph.
  • FIG. 3 shows the time change of the current I1 flowing through the fuse F1 when the DC circuit 100 is normal and the time change of the current I2 flowing through the fuse F1 when the DC circuit 100 is abnormal. .
  • the current I1 decreases in a time shorter than the rated energization time (time until the fuse F1 is blown). Therefore, when the DC circuit 100 is normal, the fuse F1 is not blown. However, when the DC circuit 100 is in an abnormal state, the MOSFET T1 is not turned off and the current continues to flow. When a current exceeding the rated current is exceeded and the current exceeding the rated current flows, the fuse F1 is finally blown and finally the current flows. I2 decreases.
  • the DC circuit 100 uses the fact that the fuse F1 is not blown if a current exceeding the rated current flows even if the current is shorter than the rated energization time, so that even if the switch SW1 is switched from the on state to the off state, The occurrence of arc discharge can be suppressed. Further, in the case where the DC circuit 100 is not in a normal state due to a failure of the MOSFET T1, the switch FS1 is opened due to the blow of the fuse F1, and re-energization in the main system and the sub system from the DC power supply is performed. Can be deterred.
  • FIG. 4 is an explanatory diagram showing the state of the switch FS1 and the fuse F1 in a normal state.
  • FIG. 5 is an explanatory diagram showing the state of the switch FS1 and the fuse F1 when the fuse F1 is blown.
  • the switch FS1 in a state in which the fuse F1 is not blown, the switch FS1 is electrically connected between the terminal a1 and the terminal a2 by the fuse F1. However, when the fuse F1 is blown, the switch FS1 loses the holding force by the fuse F1, and the terminals a1 and a2 are electrically opened.
  • the movable contact of the switch FS1 may have a structure bent near the middle as shown in FIG. By having such a bent structure, the switch FS1 can easily open the terminals a1 and a2 when the fuse F1 is blown.
  • FIG. 6 is an explanatory diagram showing the state of the switch FS1 and the fuse F1 in a normal state.
  • FIG. 7 is an explanatory diagram showing the state of the switch FS1 and the fuse F1 when the fuse F1 is blown.
  • the fuse F1 may be connected further to the movable contact of the switch FS1.
  • the fuse F1 is configured to be connected further before the movable contact of the switch FS1, so that the holding force applied to the fuse F1 can be weakened and a soft material can be used as the material of the fuse F1. .
  • Another fuse may be provided between the terminal a1 on the fixed contact side of the switch FS1 and one end of the fuse F1 so as to be in parallel with the fuse F1.
  • FIG. 8 is an explanatory diagram showing the state of the switch FS1, the switch FS1, and the fuses F1, F2 in a normal state.
  • FIG. 9 is an explanatory diagram showing the state of the switch FS1 and the fuses F1, F2 when the fuses F1, F2 are blown.
  • the resistance of the fuse varies depending on the metal used.
  • the holding force of the movable contact of the switch FS1 is strengthened, and the enlargement of the fuse F1 is avoided.
  • the fuse F2 may have the same rated energization time as the fuse F1, but may have a different rated energization time.
  • a capacitor may be provided between the terminal a1 on the fixed contact side of the switch FS1 and one end of the fuse F1 so as to be in parallel with the fuse F1.
  • FIG. 10 is an explanatory diagram showing the state of the switch FS1, the fuse F1, and the capacitor C11 in a normal state.
  • the capacitor C11 is provided in order to accumulate a charge by diverting a part of the pulsed current that flows when the switch SW1 is turned off. The electric charge accumulated in the capacitor C11 is gradually released through the fuse F1.
  • FIG. 11 is an explanatory diagram showing the time change of the current flowing through the fuse F1 and the capacitor C11 in a graph.
  • FIG. 11 shows the time change of the currents I11 and I13 flowing through the fuse F1 and the capacitor C11 when the DC circuit 100 is normal, and the time change of the current I12 flowing through the fuse F1 when the DC circuit 100 is abnormal. It is shown.
  • FIG. 12 is an explanatory diagram illustrating another configuration example of the DC circuit according to the embodiment of the present disclosure.
  • FIG. 12 shows a DC circuit 100 for combining a solid state relay (SSR, semiconductor relay) with a mechanical relay and switching between supply and interruption of DC power by turning on and off the mechanical relay. This is an example of the configuration.
  • SSR solid state relay
  • the DC circuit 100 shown in FIG. 12 includes an SSR 130, a mechanical relay RY1, diodes D21, D22, and D23, capacitors C21 and C22, and a resistor R21.
  • the DC circuit 100 allows a current to flow through the main system and the sub system that are parallel in the path through which the DC flows.
  • a system in which the SSR 130 is provided is a main system
  • a system in which the mechanical relay RY1 is provided is a sub system.
  • the mechanical relay RY1 operates so as to switch contacts using an electromagnetic force generated by a current flowing from the terminal V + to the terminal V ⁇ .
  • the mechanical relay RY1 is connected to the contact 1b when no current flows from the terminal V + to the terminal V-, and is connected to the contact 1a using electromagnetic force when the current flows from the terminal V + to the terminal V-.
  • a DC power supply for supplying DC power to the terminal V + may be provided.
  • the SSR 130 is provided on the power supply path from the terminal A to the terminal B.
  • the SSR 130 is configured to be turned on when a high voltage is applied to the control terminal, and to be turned off when a low voltage is applied to the control terminal.
  • the mechanical relay RY1 gradually generates an electromagnetic force.
  • the electromagnetic force generated by the mechanical relay RY1 reaches a certain level, the mechanical relay RY1 releases the connection with the contact 1b.
  • the mechanical relay RY1 When the electromagnetic force further increases, the mechanical relay RY1 is connected to the contact 1a, but chattering occurs when connecting to the contact 1a.
  • a voltage is applied to the terminal V +, the voltage is applied to the control terminal of the SSR 130, and the SSR 130 is turned on.
  • a current flows from the terminal V + to the terminal V ⁇ , charge is accumulated in the capacitor C21 through the diode D21.
  • the mechanical relay RY1 gradually reduces the electromagnetic force.
  • the mechanical relay RY1 releases the connection with the contact 1a.
  • the mechanical relay RY1 is connected to the contact 1b, but chattering occurs at the time of connection with the contact 1b.
  • the capacitor C21 can store enough power to turn on the SSR 130 until the mechanical relay RY1 is connected to the contact 1b. At this time, the diode D22 is released from the reverse bias and becomes conductive, and the capacitor C22 operates through the coil of the mechanical relay RY1.
  • capacitor C22 absorbs chattering when the mechanical relay RY1 is connected to the contact 1b.
  • Capacitor C22 also forms a discharge circuit for capacitor C21 through diode D23 and absorbs the surge of mechanical relay RY1.
  • the DC circuit 100 shown in FIG. 12 no current flows from the terminal V + to the terminal V ⁇ , and even when the mechanical relay RY1 is disconnected from the contact 1a, the generation of arc is suppressed and the surge can be absorbed. I can do it.
  • the DC circuit 100 shown in FIG. 12 has four terminals and can be connected in the same way as a general relay, so that it can be used in place of an existing relay.
  • the DC circuit 100 shown in FIG. 12 includes a switch FS1 and a fuse F1.
  • the semiconductor switch of the SSR 130 fails and does not normally shift to the OFF state, the fuse F1 is eventually blown by the current flowing from the terminal A.
  • the switch FS1 on the path on the contact 1a side of the mechanical relay RY1 is turned off.
  • the DC circuit 100 shown in FIG. 12 can suppress re-energization by the mechanical relay RY1 even if the semiconductor switch of the SSR 130 fails and does not normally shift to the OFF state.
  • FIG. 13 is an explanatory diagram showing the change over time of the current flowing through the fuse F1 of the DC circuit 100 shown in FIG.
  • FIG. 13 shows the time change of the current I21 flowing through the fuse F1 when the DC circuit 100 is normal and the time change of the current I22 flowing through the fuse F1 when the DC circuit 100 is abnormal. .
  • the current I21 decreases in a time shorter than the rated energization time (time until fusing) of the fuse F1. Therefore, when the DC circuit 100 is normal, the fuse F1 is not blown. However, when the DC circuit 100 is in an abnormal state, the current continues to flow without the SSR 130 being turned off, and when the current exceeding the rated current exceeds the rated current, the fuse F1 is finally blown and the current I2 is finally reached. Decreases.
  • the DC circuit 100 uses the fact that the fuse F1 is not blown if a current exceeding the rated current flows even if the current is shorter than the rated energization time, so that even if the switch SW1 is switched from the on state to the off state, The occurrence of arc discharge can be suppressed. Further, in the DC circuit 100, when the SSR 130 is not in a normal state due to a failure or the like, the switch FS1 is opened due to the blow of the fuse F1, and re-energization in the main system and the sub system from the DC power supply is suppressed. can do.
  • FIG. 14 is an explanatory diagram showing a connection example of the switch FS1 and the fuses F1 and F2.
  • a fuse F2 may be provided in parallel with the switch FS1 between the terminal a1 on the common terminal side of the switch FS1 and the terminal a2 on the fixed contact side.
  • the fuse F1 is blown by temporarily passing an excessive current through the fuse F1.
  • the configuration shown in FIG. 14 is characterized in that the generation of an arc when the fuse F1 is blown and the switch FS1 is opened is suppressed by supplying power to the fuse F2.
  • FIG. 15 is an explanatory view showing a state where both the fuses F1 and F2 shown in FIG. 14 are blown.
  • an excessive current temporarily flows through the fuse F1
  • the fuse F1 is blown, and when the switch FS1 is opened, a current further flows through the fuse F2, and the fuse F2 is also blown.
  • FIG. 14 shows an example in which a fuse F2 is provided in parallel with the switch FS1.
  • the fuse F1 may be connected from the tip of the movable contact of the switch FS1 as shown in FIG.
  • FIG. 10 in addition to a configuration in which a capacitor is provided in parallel with the fuse F1 between the terminal a1 on the fixed contact side of the switch FS1 and one end of the fuse F1, in parallel with the switch FS1.
  • the fuse F2 may be provided.
  • FIG. 16 is an explanatory diagram illustrating another configuration example of the DC circuit according to an embodiment of the present disclosure.
  • FIG. 16 shows an example of the DC circuit 100 configured to suppress the occurrence of arcs even when the MOSFET T1 constituting the voltage integrating circuit is in a short state or in an open state. It is.
  • FIG. 16 shows a DC circuit 100 in which a resistor-equipped thermoprotector THP1 using a thermal fuse F1 is connected to one contact, for example, a fixed contact, of a switch SW1 that cuts off DC current.
  • the MOSFET T1 When the switch SW1 is in the OFF state, the MOSFET T1 is also in the OFF state, so that no current flows from the DC power supply side (IN) to the load side (OUT). Thereafter, when the switch SW1 is operated and the switch SW1 is turned on, a current flows from the DC power supply side (IN) to the load side (OUT). In this state, the MOSFET T1 is continuously turned off. Therefore, no current flows through the MOSFET T1.
  • the MOSFET T1 is turned on, and the current flows in the direction of decreasing the voltage at both ends of the switch SW1 from the DC power supply side (IN) to the load side (OUT), thereby reducing the voltage at both ends of the switch SW1.
  • 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 switch SW1 is turned off and the capacitor C1 is charged by the voltage generated at both ends of the switch SW1
  • the gate voltage of the MOSFET T1 is lowered, and the MOSFET T1 is turned off so that a current flows through the MOSFET T1. Disappear.
  • the diode DZ1 connected in parallel to the resistor R2 of the DC circuit 100 is for discharging the charge accumulated in the capacitor C1 in a short time without going through the resistor R2 when the switch SW1 is shifted from the off state to the on state. Provided.
  • the MOSFET T1 fails in a short state, the current continues to flow through the resistor R3 of the thermoprotector THP1 with a resistor, and the resistor R3 generates heat.
  • the temperature of the resistor R3 becomes equal to or higher than a predetermined fusing temperature, the thermal fuse F1 is blown.
  • the voltage applied to the switch SW1 is suppressed.
  • the switch SW1 is turned off while the MOSFET T1 is in an open state and has failed, no current flows through the MOSFET T1.
  • the thermal fuse F1 is provided, the thermal fuse F1 is melted by arc heat generated when the switch SW1 is turned off. Therefore, the DC circuit 100 shown in FIG. 16 can safely cut off the DC current even if the switch SW1 is turned off while the MOSFET T1 is in an open state and has failed.
  • FIG. 17 is an explanatory diagram illustrating another configuration example of the DC circuit according to an embodiment of the present disclosure.
  • FIG. 17 shows a configuration example of the DC circuit 100 in which the fuse F2 is provided in parallel with the resistor R3 in the DC circuit 100 shown in FIG.
  • the fuse F2 is first blown.
  • the voltage applied to the switch SW1 is suppressed by blowing the fuse F2.
  • FIG. 18 is an explanatory diagram showing another configuration example of the switch circuit 110.
  • FIG. 18 shows a switch including a current fuse Fc1 provided between terminals a and b, a thermoprotector Ftp1 provided between terminals a and b and c, and diodes D31 and D32. Circuit.
  • the thermoprotector Ftp1 is provided between the temperature fuses Ft1 and Ft2 connected in series, between the temperature fuses Ft1 and Ft2, and the terminal c, and includes a resistor R1.
  • the resistor R1 is provided to heat the thermal fuses Ft1 and Ft2.
  • the terminal c is connected to a circuit through which a current flows for a short period of time when it is normal, such as the voltage integration circuit described above.
  • the current fuse Fc1 and the current fuse Fc2 connected in parallel with the resistor R1 are direct current fuses, and an arc at the time of fusing occurs only inside the fuse housing, and is digested by an arc extinguishing agent after the arc is generated. Use what has a structure.
  • the internal resistance of a general temperature fuse is about 1.5 m ⁇ to 15 m ⁇ , and the internal resistance of the current fuse is 120 m ⁇ in the case of 1 A rating and 16 m ⁇ in the case of 5 A rating. Therefore, depending on the combination of fuses, half may flow through the current fuse.
  • two diodes D31 and D32 are provided.
  • the two diodes D31 and D32 differ in the direction in which current flows as shown in FIG. Note that the two diodes D31 and D32 may be replaced with bidirectional diodes.
  • the current fuse Fc1 is only generated when a voltage higher than the forward voltage (for example, approximately 0.65 V) of the two diodes D31 and D32 is generated by the resistors of the thermal fuses Ft1 and Ft2. Current begins to flow. Therefore, when the internal resistance of the thermal fuses Ft1 and Ft2 is 15 m ⁇ , for example, a current of 40 A or more needs to flow, and in normal use, the current fuse Fc1 does not flow, and the thermal fuses Ft1 and Ft2 are blown.
  • the current fuse Fc1 can be prevented from deteriorating by being shunted to the current fuse Fc1 only when the internal resistance values of the thermal fuses Ft1 and Ft2 change.
  • FIG. 19 is an explanatory diagram showing an example of a current flowing between terminals a and b and a current flowing in terminal c of the circuit shown in FIG.
  • the current fuse Fc2 has a capacity that does not blow, and the heat generation of the resistor R1 due to the shunt causes the temperature fuses Ft1 and Ft2 to have a heat capacity that does not blow.
  • the current fuse Fc2 is blown at time t2.
  • the temperature fuses Ft1 and Ft2 are blown at a time t3 due to heat generated by the current diverted to the resistor R1.
  • the thermal fuses Ft1 and Ft2 are blown, the current between the terminals ab is cut off, and the current is shunted to the current fuse Fc1.
  • the current fuse Fc1 is blown at time t4 by the current between the terminals a and b.
  • the current fuse Fc1 has a resistance value larger than the sum of the resistance values of the thermal fuses Ft1 and Ft2 due to its characteristics.
  • the circuit shown in FIG. 18 normally utilizes the fact that the current flowing through the current fuse Fc1 is very small and therefore does not blow. For example, as the current fuse Fc1, a fuse that is blown at 1A is selected.
  • FIG. 20 is an explanatory diagram illustrating a functional configuration example of the moving body 40 including the DC circuit 100.
  • the moving body 40 may be, for example, a moving body that uses gasoline as a power source, such as a gasoline car, and uses a chargeable / dischargeable battery as a main power source, such as an electric vehicle, a hybrid vehicle, and an electric motorcycle. It may be a body.
  • FIG. 20 illustrates an example in which the moving body 40 includes a battery 210 and a driving unit 220 that is driven by electric power supplied from the battery.
  • the drive unit 220 may include, for example, equipment provided in the vehicle such as a wiper, a power window, a light, a car navigation system, and an air conditioner, and a device that drives the moving body 40 such as a motor.
  • 20 is provided with a DC circuit 100 in the middle of a path through which DC power is supplied from the battery 210 to the drive unit 220.
  • 20 is provided with a DC circuit 100 on a path through which DC power is supplied from the battery 210 to the drive unit 220. For example, when the battery 210 is temporarily attached or detached, arc discharge occurs. Can be suppressed.
  • FIG. 20 illustrates an example of the moving body 40 provided with only one DC circuit 100, but the present disclosure is not limited to such an example. That is, a plurality of DC circuits 100 may be provided in the middle of a path through which DC power is supplied. Further, the DC circuit 100 may be provided not only in the middle of a path in which DC power is supplied from the battery 210 to the drive unit 220 but also in another place, for example, in the middle of a path when charging the battery 210 with DC power. . The moving body 40 can safely charge the battery 210 with DC power by providing the DC circuit 100 in the middle of the path when charging the battery 210 with DC power.
  • the switch FS1 is opened due to the fuse F1 being blown, and the main system and the sub-system from the DC power supply are opened. Re-energization in the system can be suppressed.
  • the fuse is a DC circuit having a rating that does not blow at the temperature of the resistor due to the flow of a rated energization current during the rated energization time of the circuit.
  • the circuit is A switching element that is provided on the first current path and that is turned on when direct current is no longer supplied in the second current path and reduces a current flowing to the source side; Capacitance element that starts charging when DC is no longer supplied through the first current path and increases the gate voltage of the switching element after DC is no longer supplied through the second current path; A resistive element for setting a time for applying a voltage to the gate terminal of the switching element together with the capacitive element;
  • the circuit is A switching element that is provided on the first current path and that is turned on when direct current is no longer supplied in the second current path and reduces a current flowing to the source side; Capacitance element that starts charging when DC is no longer supplied through the first current path and increases the gate voltage of the switching element after DC is no longer supplied through the second current path; A resistive element for setting a time for applying a voltage to the gate terminal of the switching element together with the capacitive element;
  • the DC circuit according to (6) comprising: (8)
  • the circuit is A semiconductor relay which is provided on the first current path and which switches between supply and interruption of a direct current from a direct current power supply; A mechanical relay provided on the second current path and connected in parallel with the semiconductor relay to switch supply and interruption of a direct current from the direct current power source; With The DC circuit according to (6), which is a circuit that suppresses chattering of the mechanical relay when DC is cut off by the mechanical relay.
  • a moving body comprising the DC circuit according to any one of (1) to (15).
  • a power supply system comprising:

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Keying Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

Le problème décrit par la présente invention est de fournir un circuit à courant continu pouvant assurer, lorsqu'un semi-conducteur est utilisé de manière à supprimer une décharge en arc, la sécurité même si un court-circuit se produit lorsque le semi-conducteur s'est détérioré. La solution selon l'invention porte sur un circuit à courant continu comprenant : des premier et second chemins de courant agencés en parallèle sur un chemin où circule un courant continu ; un circuit utilisant un premier commutateur agencé sur le premier chemin de courant de façon à permettre à un courant pulsé d'une durée prédéterminée de circuler lorsque le courant continu dans le second chemin de courant est fermé ; et un second commutateur agencé à un étage précédant le premier commutateur, et dont la connexion est maintenue par une force de traction provenant d'un fusible. Lorsque le fusible fond, le second commutateur adopte un état ouvert. Le fusible possède une valeur nominale telle qu'il ne peut pas fondre à un courant d'excitation nominal pendant l'excitation nominale du circuit.
PCT/JP2017/017392 2016-06-20 2017-05-08 Circuit à courant continu, corps mobile et système d'alimentation électrique WO2017221561A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018523572A JP6977721B2 (ja) 2016-06-20 2017-05-08 直流回路

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2016-121739 2016-06-20
JP2016121739 2016-06-20
JP2016-163474 2016-08-24
JP2016163474 2016-08-24
JP2016-165146 2016-08-25
JP2016165146 2016-08-25

Publications (1)

Publication Number Publication Date
WO2017221561A1 true WO2017221561A1 (fr) 2017-12-28

Family

ID=60784614

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/017392 WO2017221561A1 (fr) 2016-06-20 2017-05-08 Circuit à courant continu, corps mobile et système d'alimentation électrique

Country Status (2)

Country Link
JP (1) JP6977721B2 (fr)
WO (1) WO2017221561A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2021054338A1 (fr) * 2019-09-17 2021-03-25

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4927633U (fr) * 1972-06-15 1974-03-09
JPS6028434U (ja) * 1983-07-29 1985-02-26 株式会社東海理化電機製作所 車両用電源回路
JPH08106839A (ja) * 1994-10-05 1996-04-23 Alps Electric Co Ltd 機械式スイッチの接点間アークの消去装置
US5536980A (en) * 1992-11-19 1996-07-16 Texas Instruments Incorporated High voltage, high current switching apparatus
WO2011034140A1 (fr) * 2009-09-16 2011-03-24 株式会社ワイ・ワイ・エル Commutateur

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005019105A (ja) * 2003-06-24 2005-01-20 Sumitomo Electric Ind Ltd 直流リレー

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4927633U (fr) * 1972-06-15 1974-03-09
JPS6028434U (ja) * 1983-07-29 1985-02-26 株式会社東海理化電機製作所 車両用電源回路
US5536980A (en) * 1992-11-19 1996-07-16 Texas Instruments Incorporated High voltage, high current switching apparatus
JPH08106839A (ja) * 1994-10-05 1996-04-23 Alps Electric Co Ltd 機械式スイッチの接点間アークの消去装置
WO2011034140A1 (fr) * 2009-09-16 2011-03-24 株式会社ワイ・ワイ・エル Commutateur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2021054338A1 (fr) * 2019-09-17 2021-03-25
JP7117744B2 (ja) 2019-09-17 2022-08-15 国立大学法人埼玉大学 電流遮断装置及び電流遮断方法

Also Published As

Publication number Publication date
JP6977721B2 (ja) 2021-12-08
JPWO2017221561A1 (ja) 2019-04-18

Similar Documents

Publication Publication Date Title
WO2016194584A1 (fr) Circuit à courant continu (cc), dispositif d'alimentation cc, corps mobile et système d'alimentation électrique
US8063506B2 (en) Car power source apparatus
JP6641862B2 (ja) 電流制限回路、直流電力供給コネクタ及び直流電源装置
JP6973391B2 (ja) スイッチング装置、移動体及び電力供給システム
JP2017506492A (ja) 高電圧ネットワークに電力供給するためのバッテリ、並びに、バッテリ及びバッテリの高電圧端子を介して流れるエラー電流を制限し及び／又はバッテリによってバッテリの高電圧端子を介して高電圧ネットワークへと印加されるエラー電圧を制限するための少なくとも１つの切り替えユニットを備えたバッテリシステム
KR102035033B1 (ko) 전기 자동차용 파워 릴레이 어셈블리 및 파워 릴레이 어셈블리가 구비된 전기자동차용 에너지 시스템의 작동 방법
JP2017114373A (ja) ジャンクションボックス
JP6708136B2 (ja) 直流開閉器のアーク消去装置
WO2017018147A1 (fr) Dispositif de commutation, corps mobile électrique, et système d'alimentation électrique
WO2017221561A1 (fr) Circuit à courant continu, corps mobile et système d'alimentation électrique
JP6011707B1 (ja) スイッチング装置
JP2018113223A (ja) 直流開閉器のアーク消去装置
JP7010245B2 (ja) アーク抑制装置
JPH08205411A (ja) バッテリの逆接続保護回路
JP7226307B2 (ja) アーク抑制装置、移動体及び電力供給システム
JP2006260925A (ja) 直流高速真空遮断装置
WO2022064850A1 (fr) Appareillage de commutation à circuit en courant continu
JP2002359921A (ja) 過電圧保護回路およびこれを搭載したモータ制御装置
WO2023162200A1 (fr) Dispositif d'alimentation en courant de coupure embarqué
JP2002110006A (ja) 直流遮断器
JP6164788B1 (ja) 車両用電源供給システム、及び車両用電源供給システムの制御方法
WO2018131250A1 (fr) Dispositif d'extinction d'arc pour interrupteur à courant continu
JP2023548835A (ja) 消弧プリチャージ回路
JP2018148631A (ja) 電池の制御装置
JP2005032525A (ja) 電気回路のスイッチ装置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 2018523572

Country of ref document: JP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17815031

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17815031

Country of ref document: EP

Kind code of ref document: A1