Switching system, circuit breaking system, and power supply system

Abstract

The invention provides a switching system, a circuit breaking system and a power supply system. The control system (800) is a control system that controls the circuit breaker (910). The circuit breaker (910) is activated by a starting current flowing through the auxiliary circuit (920) and having a current value equal to or greater than a preset value, and cuts off the main circuit (930). A control system (800) is provided with a drive unit (2) and a driven unit (1). The drive unit (2) includes an intermediate circuit (210) connected to the main circuit (930). The driven unit (1) is connected to the auxiliary circuit (920). When an abnormal current having a current value equal to or greater than a predetermined value flows through the intermediate circuit (210), the drive unit (2) uses the abnormal current flowing through the intermediate circuit (210) as a drive source for driving the drive unit (2). The driven unit (1) is driven by the drive unit (2), thereby supplying a starting current to the auxiliary circuit (920).

Description

[0001] This application is a divisional application of the invention patent application with application number 201980047978.4, application date July 19, 2019, and invention name “Control system and circuit breaker system”. Technical Field

[0002] The present disclosure generally relates to a control system and a circuit breaker system, and more particularly to a control system for controlling a circuit breaker for interrupting a circuit and a circuit breaker system including the control system. Background Art

[0003] Patent document 1 discloses a conduction-cutting device. The conduction-cutting device of patent document 1 is applied to an electrical circuit. The electrical circuit includes a storage battery and an electrical device as devices constituting the electrical circuit. In the electrical circuit, the electrical device is operated by power supply from the storage battery. The conduction-cutting device of patent document 1 cuts off conduction between devices constituting the electrical circuit by cutting off the conductor.

[0004] The above-mentioned electrical circuit is mounted in a vehicle. The conduction-cutting device is used to cut off the conduction between the devices constituting the electrical circuit, such as the battery and the electrical device, when the vehicle collides. A collision sensor for detecting whether the collision occurs and an electronic control unit to which a signal from the collision sensor is input are installed in the vehicle. When the electronic control unit detects a collision of the vehicle based on the output signal of the collision sensor, the conduction-cutting device is activated. The conduction-cutting device is activated to cut off the power supply from the battery to the electrical device.

[0005] In the electric circuit of Patent Document 1, the electronic control unit detects the collision of the vehicle based on the output signal of the collision sensor and operates the conduction cutoff device. Therefore, in the electric circuit of Patent Document 1, time is required for the electronic control unit to determine the collision, and the operation of the conduction cutoff device may be delayed.

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent Document 1: Japanese Patent Application Publication No. 2017-54774 Summary of the invention

[0009] The present disclosure has been made in view of the above circumstances, and an object of the present disclosure is to provide a control system and a circuit breaker system that can shorten the time until the circuit breaker starts operating.

[0010] Solutions for solving problems

[0011] A control system involved in one embodiment of the present disclosure is a control system for controlling a circuit breaker. The circuit breaker is activated by a starting current having a current value greater than a preset value flowing through an auxiliary circuit, thereby cutting off the main circuit. The control system includes a driving unit and a driven unit. The driving unit includes an intermediate circuit connected to the main circuit. The driven unit is connected to the auxiliary circuit. When an abnormal current having a current value greater than a prescribed value flows through the intermediate circuit, the driving unit uses the abnormal current flowing through the intermediate circuit as a driving source for driving the driven unit. The driven unit is driven by the driving unit, thereby supplying the starting current to the auxiliary circuit.

[0012] A circuit breaker system according to one aspect of the present disclosure includes the control system and the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a configuration diagram of a circuit breaker system including the control system according to the first embodiment.

[0014] Figure 2 This is a structural diagram for explaining a power supply system and a vehicle including the above-mentioned circuit breaker system.

[0015] Figure 3 1 is a configuration diagram showing a state before the switch system in the above-mentioned control system is actuated.

[0016] Figure 4 1 is a structural diagram showing the state of the above-mentioned switch system after operation.

[0017] Figure 5 A is a configuration diagram showing a state before operation of a switch system in a control system according to a first modification example of the first embodiment. Figure 5 B is the switch system from the above and Figure 5 Structural diagram when viewed in a direction orthogonal to A.

[0018] Figure 6 A is a structural diagram showing a state after the above-mentioned switch system is operated. Figure 6 B is the switch system from the above and Figure 6 Structural diagram when viewed in a direction orthogonal to A.

[0019] Figure 7 This is a configuration diagram showing a state before operation of a switch system in a control system according to a second modified example of the first embodiment.

[0020] Figure 8 1 is a structural diagram showing the state of the above-mentioned switch system after operation.

[0021] Fig. 9This is a schematic cross-sectional view showing a state of an electromagnetic relay used in a switch system in a control system according to a third modified example of the first embodiment when an exciting coil is not energized.

[0022] Fig.10 This is a schematic cross-sectional view showing a state of the exciting coil of the above-mentioned electromagnetic relay when electricity is supplied to the exciting coil.

[0023] Fig.11 This is a schematic cross-sectional view showing a state when an abnormal current flows through a movable contact when the exciting coil is energized in the above-mentioned electromagnetic relay.

[0024] Fig.12 This is a configuration diagram of a circuit breaker system having a control system according to a fourth modified example of the first embodiment.

[0025] Fig.13 A is a diagram showing the flow of operations of the control system according to the first embodiment. Fig.13 B is a diagram showing the flow of operations of the control system of the fourth variant of implementation mode 1.

[0026] Fig.14 This is a configuration diagram showing a state before operation of an example of a drive unit and a contact device in the above-mentioned control system.

[0027] Fig.15 1 is a structural diagram showing the state of the above-mentioned drive unit and contact device after operation.

[0028] Fig.16 A is a configuration diagram showing a state before operation of another example of the drive unit and the contact device in the above-mentioned control system. Fig.16 B is the drive unit and contact device from the above Fig.16 Structural diagram when viewed in a direction orthogonal to A.

[0029] Fig.17 A is a structural diagram showing the state of the above-mentioned drive unit and contact device after operation. Fig.17 B is the drive unit and contact device from the above Fig.17 Structural diagram when viewed in a direction orthogonal to A.

[0030] Fig.18 This is a configuration diagram showing a state before operation of still another example of the drive unit and the contact device in the above-mentioned control system.

[0031] Fig.19 1 is a structural diagram showing the state of the above-mentioned drive unit and contact device after operation.

[0032] Fig. 20 This is a schematic cross-sectional view showing a state of an exciting coil of an electromagnetic relay used in the above-mentioned control system when energized.

[0033] Fig.21 This is a configuration diagram of a switch system in a control system according to a fifth variation of the first embodiment.

[0034] Fig. 22 This is a configuration diagram of a switch system in a control system according to a sixth variant of implementation example 1.

[0035] Fig.23 This is a structural diagram of a switch system in a control system according to the seventh variant of implementation mode 1.

[0036] Fig.24 This is a structural diagram of a switch system in a control system according to the eighth variant of implementation mode 1.

[0037] Fig.25 This is a configuration diagram of a switch system in a control system according to a ninth variant of the first embodiment.

[0038] Fig.26 It is a structural diagram of other states of the above-mentioned switching system.

[0039] Fig. 27 This is a structural diagram of yet another state of the above-mentioned switch system.

[0040] Fig.28 This is a structural diagram of a drive unit and a contact device used in another example of the above-mentioned control system.

[0041] Fig.29 This is a configuration diagram of a circuit breaker system according to a tenth variation of the first embodiment.

[0042] Fig.30 This is a configuration diagram of a circuit breaker system according to the 11th modified example of the first embodiment.

[0043] Fig.31 This is a structural diagram of a control system according to the 12th variant of implementation mode 1.

[0044] Fig.32 This is a configuration diagram of a circuit breaker system including a control system according to a second embodiment.

[0045] Fig.33 is a structural diagram of the above control system.

[0046] Fig.34 This is a configuration diagram of a control system according to a first variant of the second embodiment.

[0047] Fig.35 A. Fig.35 B is a structural diagram of the control system of the second variant of implementation mode 2.

[0048] Fig.36This is a configuration diagram of a control system according to a third variant of the second embodiment.

[0049] Fig.37 This is a configuration diagram of a circuit breaker system including a control system according to a third embodiment.

[0050] Fig.38 It is a structural diagram of a modified example of the above-mentioned circuit breaker system.

[0051] Fig.39 This is a schematic cross-sectional view of a circuit breaker used in a circuit breaker system including a control system according to a fourth embodiment.

[0052] Fig.40 This is a schematic cross-sectional view of a circuit breaker according to the above-mentioned modified example. DETAILED DESCRIPTION

[0053] The embodiments and modifications described below are merely examples of the present disclosure. The present disclosure is not limited to the embodiments and modifications, and various changes can be made according to design, etc., even in forms other than the embodiments and modifications, as long as they do not depart from the scope of the technical concept involved in the present disclosure.

[0054] (1) Implementation Method 1

[0055] (1.1) Summary

[0056] Reference Figure 1 to Figure 4 The control system 800 and the circuit breaker system 900 according to the present embodiment will be described.

[0057] like Figure 1 As shown, the circuit breaker system 900 of this embodiment includes a control system 800 and a circuit breaker 910. The circuit breaker 910 is activated by a starting current (current having a current value greater than a preset value) to cut off the main circuit 930. The starting current is a current having a current value greater than a preset value flowing through the auxiliary circuit 920.

[0058] The control system 800 controls the circuit breaker 910. The control system 800 includes a driven unit 1 and a driving unit 2. The driven unit 1 is connected to the auxiliary circuit 920. The driving unit 2 includes an intermediate circuit 210 connected to the main circuit 930. The intermediate circuit 210 constitutes a part of the main circuit 930. The driven unit 1 is driven by the driving unit 2. Figure 1 In the figure, the driven part 1 is shown as a normally open contact.

[0059] like Figure 1As shown, the control system 800 (specifically, the driven unit 1) is connected to the circuit breaker 910 via the auxiliary circuit 920. In addition, the control system 800 (specifically, the drive unit 2) is connected to the circuit breaker 910 via the main circuit 930. In the control system 800, when an abnormal current (a current having a current value greater than a specified value) flows in the main circuit 930, the abnormal current flows to the intermediate circuit 210 of the drive unit 2. In the control system 800, the drive unit 2 drives the driven unit 1 using the abnormal current flowing through the intermediate circuit 210 as a driving source. The driven unit 1 is driven by the drive unit 2, thereby supplying a starting current to the auxiliary circuit 920. As a result, the circuit breaker 910 is activated to cut off the main circuit 930. In addition, when the driven unit 2 is not driven, the driven unit 1 does not supply a starting current to the auxiliary circuit 920.

[0060] The abnormal current is, for example, an overcurrent or a short-circuit current that flows through the main circuit 930 due to a short circuit in a device constituting the main circuit 930 when an accident occurs in the vehicle 300 equipped with the circuit breaker system 900 .

[0061] In more detail, Figure 1 As shown, the control system 800 of the present embodiment includes a switch system 100 and a current supply source 150 .

[0062] The current supply source 150 is a power source for supplying a starting current to the auxiliary circuit 920, and is connected to the auxiliary circuit 920. In addition, the current supply source 150 may not be included in the components of the control system 800.

[0063] The switch system 100 includes the driven part 1 and the driving part 2 described above. The switch system 100 (specifically, the driven part 1) is connected to the auxiliary circuit 920. The switch system 100 (specifically, the driving part 2) is connected to the main circuit 930. The switch system 100 operates by using the abnormal current flowing through the intermediate circuit 210 of the driving part 2 (the abnormal current flowing through the main circuit 930) as a driving source. That is, in the switch system 100, the magnetic field or heat generated by the abnormal current flowing through the intermediate circuit 210 of the driving part 2 is converted into energy so that the driven part 1 is mechanically driven. As the driving part 2 operates, the control system 800 supplies a starting current from the current supply source 150 to the circuit breaker 910 via the auxiliary circuit 920. On the other hand, in the switch system 100, when an abnormal current does not flow in the main circuit 930 (no current flows, or the current value is less than the above-mentioned specified value), the driving unit 2 is not driven, and thus a starting current (a current value greater than a preset value) is not supplied to the auxiliary circuit 920. The specific structure of the switch system 100 will be described later.

[0064] As described above, the control system 800 of the present embodiment operates when an abnormal current flows through the main circuit 930 to supply a starting current to the auxiliary circuit 920 (supplying the starting current from the current supply source 150). When the starting current is supplied to the auxiliary circuit 920, the circuit breaker 910 cuts off the main circuit 930. That is, the control system 800 of the present embodiment does not require a collision determination process performed by a processor or the like as in the electronic control unit described in Patent Document 1. Therefore, compared with the electrical circuit of Patent Document 1, it is possible to shorten the time until the circuit breaker 910 is started (the circuit breaker 910 starts to operate).

[0065] (1.2) Details

[0066] (1.2.1) Power supply system

[0067] like Figure 2 As shown, the circuit breaker system 900 is used in the power supply system 200 , for example, and constitutes a part of the power supply system 200 .

[0068] The power supply system 200 is installed in a vehicle 300 such as an electric vehicle, and drives a motor 3002 connected via an inverter 3001 to drive the vehicle 300. Figure 2 As shown, a precharge capacitor 3003 is connected in parallel with the inverter 3001 .

[0069] During power operation, inverter 3001 converts DC power supplied from power supply system 200 into AC power and supplies it to motor 3002. During regeneration, inverter 3001 converts AC power supplied from motor 3002 into DC power and supplies it to power supply system 200. Motor 3002 is, for example, a three-phase AC synchronous motor.

[0070] The power supply system 200 includes a battery 201 , a first main relay 202 , a second main relay 203 , a pre-charge resistor 204 , a pre-charge relay 205 , a current sensor (shunt resistor) 206 , and a control circuit 207 in addition to the circuit breaker system 900 .

[0071] The battery 201 , the first main relay 202 , the second main relay 203 , the current sensor 206 , and the circuit breaker system 900 are connected in series with one another via a main circuit 930 .

[0072] The battery 201 includes a plurality of battery cells connected in series. For example, nickel-metal hydride battery cells, lithium-ion battery cells, etc. can be used as the battery cells.

[0073] The first main relay 202 has a first end connected to the positive electrode of the battery 201 , and a second end connected to a first input terminal (high potential side input terminal) of the inverter 3001 .

[0074] A first end of the second main relay 203 is connected to a first end 901 of the circuit breaker system 900. A second end of the second main relay 203 is connected to a second input terminal (low potential side input terminal) of the inverter 3001 via a current sensor 206. A second end 902 of the circuit breaker system 900 is connected to the negative electrode of the battery 201.

[0075] A series circuit of a pre-charging resistor 204 and a pre-charging relay 205 is connected in parallel with the first main relay 202 .

[0076] The control circuit 207 controls the operations of the first main relay 202, the second main relay 203, and the pre-charge relay 205. The control circuit 207 is, for example, an electronic control unit (ECU) of the vehicle 300.

[0077] When power starts to be supplied to the motor 3002, the control circuit 207 closes the pre-charge relay 205 and the second main relay 203 to charge the pre-charge capacitor 3003. As a result, the inrush current to the motor 3002 is suppressed. After charging the pre-charge capacitor 3003, the control circuit 207 opens the pre-charge relay 205 and closes the first main relay 202, so that power starts to be supplied from the power supply system 200 to the motor 3002.

[0078] In addition, the control circuit 207 detects the occurrence of an abnormality in the main circuit 930 based on the current detected by the current sensor 206. When an abnormality occurs in the main circuit 930, the control circuit 207 causes at least one of the first main relay 202 and the second main relay 203 to operate (disconnect) to disconnect the main circuit 930. For example, when the control circuit 207 detects that the magnitude of the current detected by the current sensor 206 exceeds the threshold value for a predetermined time, the control circuit 207 disconnects at least one of the first main relay 202 and the second main relay 203. Thus, the main circuit 930 is disconnected. In this case, for example, when the disconnected relays (the first main relay 202 and the second main relay 203) are closed again by the control circuit 207, the main circuit 930 is turned on again, and the power supply from the power supply system 200 to the motor 3002 begins again.

[0079] The circuit breaker system 900 operates independently of the control circuit 207. The circuit breaker system 900 is connected to the main circuit 930. The circuit breaker system 900 normally (in a normal state) turns on the main circuit 930. When an abnormal current (a current having a current value greater than a predetermined value) flows through the main circuit 930, the circuit breaker system 900 (independently of the control circuit 207) cuts off the main circuit 930.

[0080] (1.2.2) Circuit breaker system

[0081] Next, refer to Figure 1 The structure of the circuit breaker system 900 will be described.

[0082] As described above, the circuit breaker system 900 includes the control system 800 and the circuit breaker 910 .

[0083] The control system 800 includes a first terminal 801 and a second terminal 802 connected to the main circuit 930. The control system 800 includes a third terminal 803 and a fourth terminal 804 connected to the auxiliary circuit 920.

[0084] The circuit breaker 910 includes a first end 911 and a second end 912 connected to the main circuit 930 . The circuit breaker 910 includes a third end 913 and a fourth end 914 connected to the auxiliary circuit 920 .

[0085] like Figure 1 As shown, in the main circuit 930, the first end 801 of the control system 800 is connected to the first end 901 of the circuit breaker system 900. The second end 802 of the control system 800 is connected to the first end 911 of the circuit breaker 910. The second end 912 of the circuit breaker 910 is connected to the second end 902 of the circuit breaker system 900.

[0086] In the auxiliary circuit 920 , the third terminal 803 of the control system 800 is connected to the fourth terminal 914 of the circuit breaker 910 . The fourth terminal 804 of the control system 800 is connected to the third terminal 913 of the circuit breaker 910 .

[0087] The circuit breaker 910 is, for example, an opening and closing device that is activated by current and operates by an explosion occurring in the device. The circuit breaker 910 is activated by, for example, a starting current (current having a current value greater than a preset value) flowing in the auxiliary circuit 920, and uses the energy generated by the explosion (combustion) occurring in the device to cut off the main circuit 930.

[0088] The circuit breaker 910 of this embodiment is, for example, a circuit breaker using an initiator. The circuit breaker 910 includes a gas generator 915 and a conductor 916. The gas generator 915 includes a heating element connected between the third end 913 and the fourth end 914 of the circuit breaker 910 and a fuel (explosive powder) arranged around the heating element. The conductor 916 is connected between the first end 911 and the second end 912 of the circuit breaker 910. Figure 1In the figure, the conductor 916 is shown as a normally closed contact. In the circuit breaker 910, when the starting current flows through the heating element of the gas generator 915 via the auxiliary circuit 920, the heating element generates heat, and the temperature of the gunpowder rises. When the temperature of the gunpowder exceeds the ignition point, the gunpowder explodes (burns), and the conductor is broken (split) by the energy of the explosion (the pressure of the gas). As a result, the circuit between the first end 911 and the second end 912 of the circuit breaker 910 is cut off, and the main circuit 930 is cut off.

[0089] In addition, the circuit breaker 910 is not limited to the above-mentioned structure. The circuit breaker 910 can be any structure as long as it is activated by the starting current (current value is a current greater than a preset value) flowing through the auxiliary circuit 920 to cut off the main circuit 930. For example, the circuit breaker 910 can also be an electromagnetic relay having a contact device connected to the main circuit 930 and an electromagnet device connected to the auxiliary circuit 920.

[0090] The control system 800 operates using the abnormal current flowing through the intermediate circuit 210 of the drive unit 2 as a drive source to supply a starting current to the auxiliary circuit 920. As described above, the control system 800 of this embodiment includes the switch system 100 and the current supply source 150.

[0091] The current supply source 150 is connected to the auxiliary circuit 920. The current supply source 150 is connected between the third terminal 803 of the control system 800 and the third terminal 103 of the switch system 100. The current supply source 150 of this embodiment includes a constant voltage source 151 for supplying a preset voltage. The output voltage of the constant voltage source 151 is not particularly limited, for example, it is a DC 12V.

[0092] The switch system 100 includes a first end 101 and a second end 102 connected to the main circuit 930, and a third end 103 and a fourth end 104 connected to the auxiliary circuit 920. The first end 101 of the switch system 100 is connected to the first end 801 of the control system 800. The second end 102 of the switch system 100 is connected to the second end 802 of the control system 800. The third end 103 of the switch system 100 is connected to the third end 803 of the control system 800 via the current supply source 150. The fourth end 104 of the switch system 100 is connected to the fourth end 804 of the control system 800.

[0093] (1.2.3) Switching system

[0094] Next, refer to Figure 3 , Figure 4 A specific structure of the switch system 100 according to the present embodiment will be described.

[0095] like Figure 3As shown, the switch system 100 of the control system 800 includes a driven part 1 and a driving part 2. The driven part 1 is connected between the third end 103 and the fourth end 104 of the switch system 100. In other words, the driven part 1 is connected to the auxiliary circuit 920. The driven part 1 is connected in series with the current supply source 150. The driven part 1 is driven by the driving part 2 to change the auxiliary circuit 920 from an open state to a closed state. The driving part 2 is connected between the first end 101 and the second end 102 of the switch system 100. In other words, the intermediate circuit 210 of the driving part 2 is connected to the main circuit 930. The driving part 2 closes the driven part 1 by an abnormal current flowing through the intermediate circuit 210.

[0096] The driven part 1 of the present embodiment includes a contact device 11. The contact device 11 includes a pair of fixed contacts 111 (a pair of first contacts) and a pair of movable contacts 112 (a pair of second contacts).

[0097] Each fixed contact 111 is provided on a fixed terminal 113 formed of a conductive material, for example. One of the pair of fixed terminals 113 is connected to the third end 103 of the switch system 100 . The other of the pair of fixed terminals 113 is connected to the fourth end 104 of the switch system 100 .

[0098] The pair of movable contacts 112 is provided on, for example, a plate-shaped movable contact 114 formed of a conductive material. The pair of movable contacts 112 is provided on, for example, both ends of the movable contact 114 in the longitudinal direction.

[0099] The movable contact 114 can move relative to each fixed terminal 113 between a contact position and a separation position. Here, the contact position is a position of the movable contact 114 where a pair of movable contacts 112 are in contact with a pair of fixed contacts 111. The separation position is a position of the movable contact 114 where a pair of movable contacts 112 are separated from a pair of fixed contacts 111. In other words, the movable contact 112 can move between a closed position in contact with the fixed contacts 111 and a disconnected position in contact with the fixed contacts 111. Figure 3 As shown in FIG. 1 , a contact pressure spring 30B is disposed between the movable contact 114 and a portion of the frame (or a contact holder) 31. The movable contact 114 is held in the separated position by the contact pressure spring 30B.

[0100] The driving unit 2 uses the abnormal current flowing through the intermediate circuit 210 of the driving unit 2 as a driving source to move the movable contact 114 from the separated position to the contact position. In other words, the driving unit 2 uses the abnormal current flowing through the main circuit 930 as a driving source to move the movable contact 112 from the open position to the closed position.

[0101] The driving unit 2 of this embodiment drives the driven unit 1 by utilizing the electromagnetic effect generated by the magnetic field, and the magnetic field is generated by the abnormal current flowing through the intermediate circuit 210. Figure 3 As shown, the driving unit 2 of the present embodiment includes an exciting coil 211 , a movable element 212 , and a stator 213 .

[0102] The excitation coil 211 is connected between the first end 101 and the second end 102 of the switch system 100. In other words, the excitation coil 211 constitutes at least a part of the intermediate circuit 210 and is connected to the main circuit 930. The movable member 212 is formed of a magnetic material. The movable member 212 can be in a first position ( Figure 3 The position shown) and the second position ( Figure 4 The movable member 212 is held in the first position by the spring force of the contact pressure spring 30B received via the movable contact 114 and the shaft 30. The fixed member 213 is formed of a magnetic material. In addition, a contact pressure spring 30C is arranged between the fixed member 213 and the movable contact 114.

[0103] The fixed member 213 and the movable member 212 are arranged facing each other. At least a part of the magnetic flux (magnetic field) 214 generated by the exciting coil 211 is directed in one direction (in Figure 3 In the example, it is upward) through the fixed member 213, the movable member 212 and the gap between the fixed member 213 and the movable member 212.

[0104] In the driving unit 2, when an abnormal current flows through the exciting coil 211, the magnetic field generated by the exciting coil 211 attracts the movable member 212 toward the fixed member 213, so that the movable member 212 moves from the first position ( Figure 3 position shown) to a second position ( Figure 4 shown in the position).

[0105] The movable contact 114 of the contact device 11 is coupled to the movable element 212 via the rod-shaped shaft 30. Therefore, the movable contact 114 moves along with the movement of the movable element 212. In other words, the movable contact 112 moves along with the movement of the movable element 212.

[0106] Furthermore, when the movable member 212 is in the first position, the movable contact 114 is in the separated position. In other words, when the movable member 212 is in the first position, the movable contact 112 is in the disconnected position away from the fixed contact 111 (see Figure 3 ; The contact device 11 is in the disconnected (OFF) state). In addition, when the movable member 212 is in the second position, the movable contact 114 is in the contact position. In other words, when the movable member 212 is in the second position, the movable contact 112 is in the closed position in contact with the fixed contact 111 (refer to Figure 4; The contact device 11 is in the ON state).

[0107] (1.2.4) Action

[0108] With the above-described structure, in the switch system 100, when no abnormal current flows in the main circuit 930 (no current flows, or the current value is less than a specified value), the movable member 212 is maintained in the first position mainly by the spring force of the contact pressure spring 30B. As a result, the movable contact 112 is maintained in the disconnected position, and the auxiliary circuit 920 is disconnected.

[0109] On the other hand, when an abnormal current flows through the main circuit 930, the abnormal current flows through the exciting coil 211, so that the exciting coil 211 is excited, and the movable member 212 is attracted to the fixed member 213 and moves from the first position to the second position. The movable contact 112 moves from the open position to the closed position, thereby short-circuiting the third end 103 and the fourth end 104 of the switch system 100. As a result, a starting current is supplied from the current supply source 150 to the heating element of the circuit breaker 910, and the circuit breaker 910 operates to cut off the main circuit 930.

[0110] According to the control system 800 and the circuit breaker system 900 of the present embodiment, when an abnormal current flows through the main circuit 930, the abnormal current flows to the intermediate circuit 210 of the driver 2. The switch system 100 uses the abnormal current flowing through the intermediate circuit 210 as a driving source to move the movable member 212 to the second position, thereby closing the auxiliary circuit 920. As a result, a starting current is supplied from the current supply source 150 to the auxiliary circuit 920, and the circuit breaker 910 is operated to cut off the main circuit 930.

[0111] As described above, according to the present embodiment, collision determination processing by a processor or the like as in the electronic control unit described in Patent Document 1 is not required. Therefore, the time until the circuit breaker 910 is activated (the circuit breaker 910 starts to operate) can be shortened compared to the electrical circuit of Patent Document 1. In addition, even in the case of a failure of the electronic control unit, the circuit breaker 910 can be operated.

[0112] In addition, for example, in a configuration in which a processor such as the control circuit 207 detects an abnormal current via the current sensor 206 and the control circuit 207 sends a control signal to the circuit breaker 910 to operate the circuit breaker 910, the control circuit 207 needs to determine the occurrence of the abnormal current. In contrast, in the present embodiment, the determination process by the processor is not required, so that the time until the circuit breaker 910 is activated (the circuit breaker 910 starts to operate) can be shortened compared to this configuration.

[0113] In addition, the present embodiment can be realized by a simple structure including the driven part 1 and the driving part 2. In addition, in the present embodiment, the driven part 1 is opened and closed by moving the movable contact 112 in space (physical movement), so the driven part 1 can be opened and closed reliably, and the reliability is improved.

[0114] (1.3) Modification

[0115] Modifications of Embodiment 1 are listed below. In addition, the above-mentioned embodiment may be referred to as a "basic example" below.

[0116] (1.3.1) First Modification

[0117] As a first variation of this embodiment, it may also be as follows Figure 5 A. Figure 5 B. Figure 6 A. Figure 6 As shown in FIG. 8B , the driving unit 2 of the switch system 100 in the control system 800 includes a first yoke 221 and a second yoke 222 .

[0118] The first yoke 221 and the second yoke 222 are formed of a magnetic material.

[0119] The first yoke 221 is relatively fixed with respect to the wiring member 105 connected between the first end 101 and the second end 102 of the switch system 100. The wiring member 105 constitutes at least a part of the intermediate circuit 210 of the drive unit 2. That is, the wiring member 105 constitutes a part of the main circuit 930. The wiring member 105 is, for example, a plate-shaped member formed of a conductive material. In other words, the first yoke 221 is relatively fixed with respect to the wiring member 105 connected to the main circuit 930. In addition, the first yoke 221 only needs to be relatively fixed (positioned) with respect to the wiring member 105, and can be fixed to the frame, for example.

[0120] The second yoke 222 is disposed opposite to the first yoke 221 with the wiring member 105 interposed therebetween. Figure 5 A. Figure 5 The position shown in B) and the second position ( Figure 6 A. Figure 6 Move between the positions shown in B).

[0121] The second yoke 222 is held in the first position, for example, by the permanent magnet 30A and the contact pressure spring 30B. The permanent magnet 30A is relatively fixed relative to the wiring member 105. The permanent magnet 30A is relatively fixed relative to the wiring member 105 in such a way that the second yoke 222 is located between the permanent magnet 30A and the first yoke 221. For example, the wiring member 105 and the permanent magnet 30A are held by a holding member fixed to the frame. The permanent magnet 30A is held by a magnetic force (towards Figure 5 A. Figure 5 In other words, the second yoke 222 is attracted by the permanent magnet 30A in a direction away from the first yoke 221 ( Figure 5 A. Figure 5 The contact pressure spring 30B is arranged between the wiring member 105 and the second yoke 222. The second yoke 222 is subjected to a force from the contact pressure spring 30B in a direction away from the wiring member 105 ( Figure 5 A. Figure 5 In addition, a contact pressure spring 30C is arranged between the first magnetic yoke 221 and the movable contact 114. The contact pressure spring 30C is, for example, Figure 5 A. Figure 5 The state of B is the natural state (natural length).

[0122] When current flows through the wiring member 105, a magnetic flux (magnetic field) 214 (see Figure 5 At least a portion of B) passes through the first yoke 221 and the second yoke 222. As a result, an attractive force is generated between the first yoke 221 and the second yoke, and the second yoke 222 receives a force from the first yoke 221 in a direction close to the first yoke 221 ( Figure 5 A. Figure 5 However, when the current value of the current flowing through the wiring member 105 is less than the above-mentioned prescribed value, the force in the downward direction of B generated by the above-mentioned attraction is Figure 5 A. Figure 5 Compared with the downward force of B, the force generated by the permanent magnet 30A and the contact pressure spring 30B is Figure 5 A. Figure 5 The force in the upward direction of B is greater (the position of the permanent magnet 30A, the elastic force of the contact pressure spring 30B, etc. are set in a manner to satisfy this relationship). Therefore, the second magnetic yoke 222 is maintained in the first position ( Figure 5 A. Figure 5 The position shown in B).

[0123] When the current value of the current flowing through the wiring member 105 becomes greater than a specified value (in other words, when an abnormal current flows through the wiring member 105), the above-mentioned attraction exceeds the force from the permanent magnet 30A and the contact pressure spring 30B, and the second yoke 222 is pulled toward the first yoke 221 (towards Figure 5 A. Figure 5 Thus, the second yoke 222 moves to the second position. That is, the second yoke 222 is attracted to the first yoke 221 by the magnetic field generated by the abnormal current flowing through the wiring member 105, thereby moving from the first position ( Figure 5 A. Figure 5 B) to the second position ( Figure 6 A. Figure 6 The position shown in B).

[0124] The movable contact 114 of the contact device 11 is coupled to the second yoke 222 via the rod-shaped shaft 30. Therefore, the movable contact 114 moves with the movement of the second yoke 222. In other words, the movable contact 112 moves with the movement of the second yoke 222.

[0125] When the second yoke 222 is in the first position, the movable contact 114 is in the separated position. In other words, when the second yoke 222 is in the first position, the movable contact 112 is in the disconnected position away from the fixed contact 111 (see Figure 5 A. Figure 5 In addition, when the second yoke 222 is in the second position, the movable contact 114 is in the contact position. In other words, when the second yoke 222 is in the second position, the movable contact 112 is in the closed position in contact with the fixed contact 111 (refer to Figure 6 A. Figure 6 B).

[0126] In the switch system 100 of this modification, when an abnormal current flows through the main circuit 930, the abnormal current flows to the intermediate circuit 210 of the driver 2. The switch system 100 of this modification uses the abnormal current as a driving source to move the second yoke 222 to the second position, thereby closing the auxiliary circuit 920. Therefore, in the control system 800 and the circuit breaker system 900 including the switch system 100 of this modification, it is possible to shorten the time until the circuit breaker 910 starts to operate with a simple structure.

[0127] (1.3.2) Second Modification

[0128] As a second variation of this embodiment, the driving unit 2 of the switch system 100 in the control system 800 may drive the driven unit 1 using heat generated by the abnormal current flowing through the intermediate circuit 210. Figure 7 , Figure 8 As shown, the driving unit 2 includes a bimetal plate 231 .

[0129] The bimetal plate 231 is formed by bonding two metal plates having different thermal expansion coefficients together, and the bimetal plate 231 bends due to a change in temperature.

[0130] The bimetal plate 231 contacts the wiring member 105 connected between the first end 101 and the second end 102 of the switch system 100. The wiring member 105 constitutes at least a part of the intermediate circuit 210 of the drive unit 2, and is, for example, a plate-shaped member formed of a conductive material. The wiring member 105 is a member having a thermal expansion coefficient that is much smaller than the thermal expansion coefficient of the two metal plates of the bimetal plate 231 (a member that is less likely to deform due to temperature changes than the bimetal plate 231).

[0131] The bimetal plate 231 is heated and bent by the heat generated by the abnormal current flowing through the wiring member 105. In other words, the bimetal plate 231 is bent from the first shape (see Figure 7 ) is transformed into a second shape (refer to Figure 8 ). The first shape is, for example, a straight line when viewed from the side. The second shape is, for example, a V-shape when viewed from the side.

[0132] A contact pressure spring 30B is arranged between the movable contact 114 of the contact device 11 and a part of the frame 31. In addition, the movable contact 114 is connected to the central part of the bimetal plate 231 through the rod-shaped shaft 30. Therefore, as the bimetal plate 231 deforms, the movable contact 114 moves against the spring force of the contact pressure spring 30B. In other words, the movable contact 112 moves as the bimetal plate 231 deforms. In addition, a contact pressure spring 30C is arranged between the movable contact 114 and the wiring member 105.

[0133] When the bimetal plate 231 is in the first shape, the movable contact 114 is in the separated position. In other words, when the bimetal plate 231 is in the first shape, the movable contact 112 is in the disconnected position away from the fixed contact 111 (see Figure 7 ). In addition, when the bimetal plate 231 is in the second shape, the movable contact 114 is in the contact position. In other words, when the bimetal plate 231 is in the second shape, the movable contact 112 is in the closed position in contact with the fixed contact 111 (refer to Figure 8 ).

[0134] In the switch system 100 of this modification, when an abnormal current flows through the main circuit 930, the abnormal current flows to the intermediate circuit 210 of the driver 2. The switch system 100 of this modification uses the abnormal current flowing through the intermediate circuit 210 as a driving source for deforming the bimetal 231 into the second shape to close the auxiliary circuit 920. Therefore, in the control system 800 and the circuit breaker system 900 including the switch system 100 of this modification, it is possible to shorten the time until the circuit breaker 910 starts to operate with a simple structure.

[0135] (1.3.3) Third Modification

[0136] As a third variation of this embodiment, the driving unit 2 of the switch system 100 in the control system 800 may drive the driven unit 1 by the electromagnetic repulsion force generated by the abnormal current flowing through the intermediate circuit 210. Figures 9 to 11 As shown, the switch system 100 is implemented by an electromagnetic relay 40 having a main contact device 41 and an auxiliary contact device 42. In this modification, the main contact device 41 is equivalent to the driving part 2, and the auxiliary contact device 42 is equivalent to the driven part 1 (contact device 11). The main contact device 41 of the electromagnetic relay 40 can be shared as either the first main relay 202 or the second main relay 203 of the power supply system 200.

[0137] like Figures 9 to 11 As shown, the electromagnetic relay 40 of the present modification example includes an electromagnet device 43 in addition to the main contact device 41 and the auxiliary contact device 42 .

[0138] The main contact device 41 includes a pair of main fixed contacts 411 and a pair of main movable contacts 412. Each main fixed contact 411 is provided at a main fixed terminal 413 formed of a conductive material, for example. One of the pair of main fixed terminals 413 is connected to the first end 101 of the switch system 100. The other of the pair of main fixed terminals 413 is connected to the second end 102 of the switch system 100. The pair of main movable contacts 412 is provided at, for example, the first surface 401 of the plate-shaped movable contact 400 formed of a conductive material. The pair of main movable contacts 412 is provided at both ends of the movable contact 400 in the long side direction so as to face the pair of main fixed contacts 411, for example. The movable contact 400 can move relative to each main fixed terminal 413 between a position where the pair of main movable contacts 412 are in contact with the pair of main fixed contacts 411 and a position where the pair of main movable contacts 412 are separated from the pair of main fixed contacts 411.

[0139] The auxiliary contact device 42 (contact device 11) includes a pair of auxiliary fixed contacts 421 (first contacts) and a pair of auxiliary movable contacts 422 (second contacts). The pair of auxiliary movable contacts 422 are, for example, provided on the second surface 402 of the movable contact 400. Here, the second surface 402 of the movable contact 400 is a surface on the opposite side of the first surface 401 in the thickness direction of the movable contact 400. The pair of auxiliary movable contacts 422 are, for example, provided at both ends in the long side direction of the movable contact 400. Each auxiliary fixed contact 421 is, for example, provided at an auxiliary fixed terminal 423 formed of a conductive material. One of the pair of auxiliary fixed terminals 423 is connected to the third end 103 of the switch system 100. The other of the pair of auxiliary fixed terminals 423 is connected to the fourth end 104 of the switch system 100.

[0140] In the electromagnetic relay 40, when the pair of main movable contacts 412 are in contact with the pair of main fixed contacts 411, the pair of auxiliary movable contacts 422 are separated from the pair of auxiliary fixed contacts 421 (see Fig.10 On the other hand, when the movable contact 400 is moved from this state (to Fig.10 When the pair of main movable contacts 412 moves more than a preset distance, the pair of main movable contacts 412 leave the pair of main fixed contacts 411 and the pair of auxiliary movable contacts 422 respectively contact the pair of auxiliary fixed contacts 421 (refer to Fig. 9 , Fig.11 That is, the auxiliary movable contact 422 (second contact) of the auxiliary contact device 42 (contact device 11) can move between a closed position in contact with the auxiliary fixed contact 421 (first contact) and an open position away from the auxiliary fixed contact 421 (first contact).

[0141] The electromagnet device 43 includes a stator 430 , a movable element 431 , an exciting coil 432 , a shaft 433 , a holder 434 , a contact pressure spring 435 , and a return spring 436 .

[0142] The fixed part 430 is a fixed iron core. The movable part 431 is a movable iron core that can move between a position close to the fixed part 430 and a position away from the fixed part 430. The fixed part 430 and the movable part 431 are arranged on the inner side of the excitation coil 432. In the electromagnet device 43, when the excitation coil 432 is energized, the movable part 431 is attracted by the magnetic flux generated by the excitation coil 432, thereby causing the movable part 431 to move in the direction toward the fixed part 430. On the other hand, when the excitation coil 432 is stopped from being energized, the movable part 431 moves downward by the spring force of the return spring 436. For example, the energization of the excitation coil 432 is controlled by the control circuit 207. The shaft 433 is used to transmit the driving force generated by the electromagnet device 43 to the movable contact 400. The upper end of the shaft 433 is fixed to the retaining member 434, and the lower end of the shaft 433 is fixed to the movable part 431. The holder 434 is formed in a rectangular frame shape, and the movable contact 400 passes through the through hole of the holder 434. The contact pressure spring 435 is arranged between the bottom plate of the holder 434 and the movable contact 400, and presses the movable contact 400 to move in the direction of the movable contact 400. Fig. 9 The return spring 436 is arranged on the inner side of the fixed part 430 to apply force to the movable part 431. Fig. 9 Apply force from below.

[0143] In the electromagnetic relay 40, when the exciting coil 432 is not energized (see Fig. 9 ), the movable member 431 and the retaining member 434 are pulled downward mainly by the spring force of the return spring 436. At this time, the movable contact 400 is also pushed downward by the retaining member 434, so that the main fixed contact 411 is separated from the main movable contact 412. That is, in this state, the pair of main fixed terminals 413 are cut off.

[0144] When the exciting coil 432 is energized (see Fig.10 ), the movable member 431 is attracted by the magnetic flux generated by the exciting coil 432 and is located at the top. At this time, the movable contact 400 is pushed upward by the bottom plate of the retaining member 434 via the contact pressure spring 435, so that the main movable contact 412 contacts the main fixed contact 411. That is, in this state, the pair of main fixed terminals 413 are connected.

[0145] Here, when the excitation coil 432 is energized (when the pair of main fixed terminals 413 are conducting), when an abnormal current flows through the movable contact 400 constituting the intermediate circuit 210, an electromagnetic repulsive force is generated at the movable contact 400 in a direction in which the main movable contact 412 is separated from the main fixed contact 411. When the movable contact 400 is subjected to the electromagnetic repulsive force, it moves in the direction of Fig.10 The pair of auxiliary movable contacts 422 are moved downward, so that the pair of auxiliary movable contacts 422 contact the pair of auxiliary fixed contacts 421 (refer to Fig.11). As a result, the pair of auxiliary fixed contacts 421 are electrically connected via the movable contact 400 , and a starting current is supplied from the current supply source 150 to the auxiliary circuit 920 .

[0146] In the switch system 100 of this modification, when an abnormal current flows through the main circuit 930, the abnormal current flows to the intermediate circuit 210 (movable contact 400) of the drive unit 2 (main contact device 41). In addition, the switch system 100 of this modification uses the abnormal current flowing through the intermediate circuit 210 as a driving source for moving the movable contact 400 to close the auxiliary circuit 920. Therefore, in the control system 800 and the circuit breaker system 900 having the switch system 100 of this modification, it is also possible to shorten the time until the circuit breaker 910 starts to operate by a simple structure.

[0147] In addition, the switch system 100 preferably includes a determination mechanism. The determination mechanism mentioned here is a mechanism that allows the supply of a starting current to the auxiliary circuit 920 only when the auxiliary contact device 42 is turned on when the excitation coil 432 is energized (that is, when the excitation coil 432 is not energized, even if the auxiliary fixed contacts 421 are turned on via the movable contact 400, the supply of a starting current to the auxiliary circuit 920 is prevented). The determination mechanism can be realized, for example, by the same mechanism as the second auxiliary contact device 63 and the second action control unit 64 of the ninth modified example described later.

[0148] (1.3.4) Fourth variant

[0149] In the switch system 100 of the control system 800 of the basic example and the first to third modified examples, the driven part 1 is realized by the contact device 11 (see Figure 1 ), the contact device 11 has a so-called a-contact (normally open contact) structure, which is as follows: the contact device 11 is normally in an off state in which the second contact (movable contact 112) is separated from the first contact (fixed contact 111), and is driven by the drive unit 2 to become an on state in which the second contact contacts the first contact. In contrast, in the switch system 100 of this variant, the driven unit 1 includes a contact device 51 and a signal inversion circuit 52 (see Fig.12), the contact device 51 has a so-called b-contact (normally closed contact) structure. The contact device 51 here is a device as follows: the contact device 51 is usually in an on state in which the second contact (movable contact 512) contacts the first contact (fixed contact 511), and is driven by the drive unit 2 to become an off state in which the second contact is separated from the first contact. In addition, the signal inversion circuit 52 here does not supply a starting current from the current supply source 150 to the auxiliary circuit 920 when the contact device 51 is not driven by the drive unit 2 and is in an on state. On the other hand, when the contact device 51 is driven by the drive unit 2 and becomes an off state, the signal inversion circuit 52 supplies a starting current from the current supply source 150 to the auxiliary circuit 920.

[0150] exist Fig.12 In the example of , the signal inversion circuit 52 includes a first resistor R1, a second resistor R2, and a photocoupler 520. The first resistor R1 is connected between the two ends of the current supply source 150 in series with the contact device 51. In addition, a series circuit of the second resistor R2 and the photodiode of the photocoupler 520 is connected between the two ends of the current supply source 150. In addition, the phototransistor of the photocoupler 520 is connected between the two ends of the current supply source 150 in series with the gas generator 915 of the circuit breaker 910. Here, the resistance value of the second resistor R2 is set to be very large compared to the resistance value of the first resistor R1. Therefore, when the contact device 51 is in the on state, almost no current flows in the second resistor R2, and the phototransistor of the photocoupler 520 is cut off.

[0151] Next, the operation of the switch system 100 of the present modification example will be compared with the operation of the switch system 100 of the basic example. Fig.13 A. Fig.13 The flowchart of B is used for explanation.

[0152] In the basic example of the switch system 100, as Fig.13 As shown in the flowchart of A, when no abnormal current flows in the main circuit 930 (S1: "No"), the contact device 11 is in the disconnected state (S2), and the auxiliary circuit 920 is cut off. In this state, the current value of the current flowing to the auxiliary circuit 920 is zero, the starting current is not supplied to the auxiliary circuit 920 (S3), and the circuit breaker 910 does not operate (S4).

[0153] Then, when the current value of the current flowing through the main circuit 930 becomes equal to or greater than the specified value (S1: "Yes") and an abnormal current flows through the main circuit 930, the contact device 11 becomes in the on state (S5), and the third terminal 103 and the fourth terminal 104 of the switch system 100 are short-circuited. As a result, a starting current is supplied from the current supply source 150 to the auxiliary circuit 920 (S6), and the starting current is supplied to the heating element of the circuit breaker 910, so that the circuit breaker 910 is actuated (S7), and the main circuit 930 is cut off.

[0154] In contrast, in the switch system 100 of this modification, Fig.13 As shown in the flowchart of B, when no abnormal current flows in the main circuit 930 (S11: "No"), the contact device 51 becomes the on state (S12). Here, the signal inversion circuit 52 of this modification reverses the state of the contact device 51 (on state / off state) and the state of the auxiliary circuit 920 (on state / off state) (S13). That is, in this modification, when the contact device 51 is in the on state, the current from the current supply source 150 flows to the first resistor R1 via the contact device 51, and almost no current flows in the second resistor R2 and the photodiode. Therefore, the phototransistor becomes the off state, and the auxiliary circuit 920 is cut off. Therefore, the starting current is not supplied from the current supply source 150 to the auxiliary circuit 920 (S14), and the circuit breaker 910 does not operate (S15). That is, when the current flowing through the contact device 51 is above the preset threshold, the signal inversion circuit 52 prevents the starting current from being supplied to the auxiliary circuit 920.

[0155] Then, when the current value of the current flowing through the main circuit 930 becomes greater than the specified value (S11: "Yes") and an abnormal current flows through the main circuit 930, the contact device 51 becomes an off state (S16). Here, the signal inversion circuit 52 inverts the state of the contact device 51 (on state / off state) and the state of the auxiliary circuit 920 (on state / off state) (S17). That is, when the contact device 51 becomes an off state, the current starts to flow from the current supply source 150 to the photodiode via the second resistor R2. When a current greater than a preset value flows through the photodiode, the phototransistor is turned on. Therefore, a starting current is supplied from the current supply source 150 to the auxiliary circuit 920 (S18), and the starting current is supplied to the heating element of the circuit breaker 910 so that the circuit breaker 910 is operated (S19), and the main circuit 930 is cut off. That is, when the current flowing through the contact device 51 is less than the preset threshold value, the signal inversion circuit 52 supplies the starting current to the auxiliary circuit 920.

[0156] As described above, in this modification, the driven part 1 includes the contact device 51 of the b-contact structure. That is, in this modification, when the driven part 1 is driven by the driving part 2, the second contact moves from the closed position in contact with the first contact to the open position away from the first contact, thereby supplying a starting current to the auxiliary circuit 920. Here, in the case where the driven part 1 includes the contact device 11 of the a-contact structure as in the basic example and the modifications 1 to 3, when the second contact contacts the first contact by the driving part 2, there is a possibility that the second contact and the first contact physically collide, so-called bounce (rebound) occurs. Therefore, there is a possibility that the timing of starting to supply current from the current supply source 150 to the auxiliary circuit 920 is deviated. In contrast, in this modification, when the driven part 1 (contact device 51) is driven by the driving part 2, only the second contact is away from the first contact, and no physical collision occurs. Therefore, according to this modification, the occurrence of bounce when driven by the driving part 2 can be suppressed.

[0157] Then, in Fig.14 and Fig.15 , Fig.16 A. Fig.16 B. Fig.17 A and Fig.17 B. Fig.18 and Fig.19 Specific examples of the driving unit 2 and the contact device 51 (driven unit 1) in this modification are shown in FIG.

[0158] exist Figures 14 to 19 In each example, the contact device 51 includes a pair of fixed contacts 511 (a pair of first contacts) and a pair of movable contacts 512 (a pair of second contacts). Each fixed contact 511 is provided on a fixed terminal 513, and the pair of movable contacts 512 is provided on a plate-shaped movable contact 514.

[0159] exist Fig.14 and Fig.15 In the example of the embodiment, the driving unit 2 includes an excitation coil 211, a movable member 212, and a fixed member 213 in the same manner as the driving unit 2 of the basic example. The excitation coil 211 constitutes at least a part of the intermediate circuit 210. The movable member 212 can be moved at a first position (a position close to the fixed member 213: see Fig.14 ) and the second position (a position away from the fixing member 213: refer to Fig.15 The movable member 212 is supported by the contact pressure spring 30B disposed between the movable member 212 and the fixed member 213. Fig.14In addition, a contact pressure spring 30C is arranged between a portion of the frame 31 and the movable contact 514. In the drive unit 2, when an abnormal current flows through the excitation coil 211, the magnetic field generated by the excitation coil 211 pulls the movable member 212 away from the fixed member 213, so that the movable member 212 moves from the first position ( Fig.14 shown position) to the second position ( Fig.15 As a result, the movable contact 514 moves from the contact position where the movable contact 512 contacts the fixed contact 511 to the separation position where the movable contact 512 leaves the fixed contact 511.

[0160] exist Fig.16 A. Fig.16 B. Fig.17 A. Fig.17 In the example of B, the drive unit 2 has a first yoke 221 and a second yoke 222 in the same manner as the drive unit 2 of the first variant. The first yoke 221 is relatively fixed relative to the wiring member 105 constituting at least a portion of the intermediate circuit 210. The second yoke 222 is coupled to the movable contact 514. The second yoke 222 is arranged opposite to the first yoke 221, and the second yoke 222 can be in the first position ( Fig.16 A. Fig.16 The position shown in B) and the second position ( Fig.17 A. Fig.17 The second yoke 222 is held in the first position by, for example, a permanent magnet 30A and a contact pressure spring 30B. The permanent magnet 30A uses magnetic force (toward Fig.16 A. Fig.16 The contact pressure spring 30B is arranged between the first magnetic yoke 221 and the second magnetic yoke 222, and acts on the second magnetic yoke 222 to move away from the first magnetic yoke 221 ( Fig.16 A. Fig.16 In addition, a contact pressure spring 30C is arranged between the second yoke 222 and the permanent magnet 30A. In the drive unit 2, when the current value of the current flowing through the wiring member 105 is less than a specified value, the second yoke 222 is maintained in the first position mainly by the attraction of the permanent magnet 30A and the downward force generated by the contact pressure spring 30B. On the other hand, when the current value of the current flowing through the wiring member 105 becomes greater than a specified value, the attraction between the first yoke 221 and the second yoke 222 increases, and the second yoke 222 moves from the first position ( Fig.16 A. Fig.16 B position) to the second position ( Fig.17 A. Fig.17Thus, the movable contact 514 moves from the contact position where the movable contact 512 contacts the fixed contact 511 to the separation position where the movable contact 512 leaves the fixed contact 511.

[0161] exist Fig.18 , Fig.19 In the example of the second modification, the driving unit 2 includes a bimetal plate 231 similarly to the driving unit 2 of the second modification.

[0162] The bimetal plate 231 is in contact with the wiring member 105 constituting at least a part of the intermediate circuit 210. A contact pressure spring 30B is arranged between the wiring member 105 and the movable contact 514, and a contact pressure spring 30C is arranged between the movable contact 514 and a part of the frame 31. The bimetal plate 231 is heated and bent by the heat generated by the abnormal current flowing through the wiring member 105, and changes from the first shape (see Fig.18 ) is transformed into a second shape (refer to Fig.19 ). The first shape is, for example, a straight line when viewed from the side. The second shape is, for example, an inverted V shape when viewed from the side. In the drive unit 2, when an abnormal current flows through the wiring member 105, the bimetallic plate 231 is deformed from the first shape to the second shape. As a result, the movable contact 514 coupled to the bimetallic plate 231 through the shaft 30 moves from a contact position where the movable contact 512 contacts the fixed contact 511 to a separation position where the movable contact 512 is separated from the fixed contact 511. In addition, the bimetallic plate 231 is maintained in the first shape by the contact pressure spring 30B even if it is slightly heated.

[0163] Of course, the driving unit 2 may also be configured to drive the driven unit 1 by the electromagnetic repulsion force generated by the abnormal current flowing through the intermediate circuit 210, similarly to the driving unit 2 of the third modified example. Fig. 20 As shown, the auxiliary movable contact 422 of the auxiliary contact device 42 (contact device 11) is configured to contact the auxiliary fixed contact 421 simultaneously when the main movable contact 412 of the main contact device 41 contacts the main fixed contact 411. Fig. 20 In the embodiment, the movable contact 400 preferably includes a first conductive portion connecting the pair of main movable contacts 412 , a second conductive portion connecting the pair of auxiliary movable contacts 422 , and an insulating portion electrically insulating the first conductive portion from the second conductive portion.

[0164] In addition, if Fig.12 As shown, in this modification, when the contact device 51 is in the on state, a current is supplied from one current supply source 150 to both the photodiode and the circuit breaker 910 (gas generator 915), but the present invention is not limited thereto. A second current supply source that supplies current to the photodiode may be provided separately from the first current supply source that supplies current to the circuit breaker 910.

[0165] In addition, the driven part 1 may include a relay device, an IPD (Intelligent Power Device), or the like instead of the photocoupler 520 .

[0166] (1.3.5) Fifth variant

[0167] As a fifth variation of this embodiment, it may also be as follows Fig.21 As shown, in the switch system 100 of the control system 800 , the driven unit 1 includes a semiconductor relay (solid-state relay; SSR) 12 , and the driving unit 2 includes a first winding 241 and a second winding 242 .

[0168] The first winding 241 is connected between the first end 101 and the second end 102 of the switch system 100. The first winding 241 constitutes at least a part of the intermediate circuit 210 of the drive unit 2. In other words, the first winding 241 is connected to the main circuit 930. The second winding 242 is electromagnetically coupled to the first winding 241. For example, the first winding 241 and the second winding 242 are wound around the same iron core and are electromagnetically coupled. The first winding 241 and the second winding 242 constitute a transformer.

[0169] The semiconductor relay 12 includes a pair of input terminals 121 and a pair of output terminals 122. The pair of input terminals 121 are respectively connected to both ends of the second winding 242. One of the pair of output terminals 122 is connected to the third end 103 of the switch system 100, and the other of the pair of output terminals 122 is connected to the fourth end 104 of the switch system 100. Fig.21 As shown, the semiconductor relay 12 of the present embodiment is a transformer-coupled solid-state relay (transformer-coupled SSR) including a DC / AC converter, a transformer, a trigger circuit, and a thyristor.

[0170] When current flows through the first winding 241, an induced current flows through the second winding 242. Here, when the current value of the current flowing through the second winding 242 is below a preset threshold value, the semiconductor relay 12 is turned off. On the other hand, when an abnormal current flows through the first winding 241, the semiconductor relay 12 is turned on by the induced current (a current with a current value above the above threshold value) flowing through the second winding 242 due to the abnormal current. When the semiconductor relay 12 is turned on, the third terminal 103 and the fourth terminal 104 of the switch system 100 are short-circuited. As a result, a starting current is supplied from the current supply source 150 to the heating element of the circuit breaker 910, and the circuit breaker 910 operates to cut off the main circuit 930.

[0171] In other words, the semiconductor relay 12 is driven by the induced current generated in the second winding 242 due to the abnormal current flowing through the first winding 241 , and the auxiliary circuit 920 is closed.

[0172] In the switch system 100 of this modification, when an abnormal current flows through the main circuit 930, the abnormal current flows to the intermediate circuit 210 of the driver 2. The switch system 100 of this modification uses the abnormal current flowing through the intermediate circuit 210 as a driving source for turning on the semiconductor relay 12 to close the auxiliary circuit 920. Therefore, in the control system 800 and the circuit breaker system 900 including the switch system 100 of this modification, it is possible to shorten the time until the circuit breaker 910 starts to operate with a simple structure.

[0173] In addition, the semiconductor relay 12 is not limited to a transformer-coupled solid-state relay (transformer-coupled SSR), but can also be a reed-relay coupled solid-state relay (reed-relay coupled SSR), a photocoupler solid-state relay (photo-coupled SSR) or other semiconductor relays.

[0174] (1.3.6) Sixth variant

[0175] As a sixth variation of this embodiment, it may also be as follows Fig. 22 As shown, the driven part 1 of the switch system 100 in the control system 800 includes a contact device (first contact device) 11 and a second contact device 13 .

[0176] The first contact device 11 includes a pair of first contacts (a pair of first fixed contacts) 111 and a pair of second contacts (a pair of first movable contacts) 112 .

[0177] Each first fixed contact 111 is provided at a fixed terminal (first fixed terminal) 113 formed of a conductive material, for example. One of the pair of first fixed terminals 113 is connected to the fourth end 104 of the switch system 100. The other of the pair of first fixed terminals 113 is connected to one of the pair of second fixed terminals 133 of the second contact device 13.

[0178] The pair of first movable contacts 112 is provided on, for example, a plate-shaped movable contact (first movable contact) 114 formed of a conductive material. The pair of first movable contacts 112 is provided on, for example, both ends of the first movable contact 114 in the longitudinal direction.

[0179] The first movable contact 114 can move relative to each first fixed terminal 113 between a contact position and a separation position. Here, the contact position is a position of the first movable contact 114 where a pair of first movable contacts 112 are in contact with a pair of first fixed contacts 111, respectively. The separation position is a position of the first movable contact 114 where a pair of first movable contacts 112 are separated from a pair of first fixed contacts 111. In other words, the first movable contact 112 can move between a closed position where it is in contact with the first fixed contacts 111 and a disconnected position where it is separated from the first fixed contacts 111.

[0180] The second contact device 13 includes a pair of second fixed contacts 131 and a pair of second movable contacts 132 .

[0181] Each second fixed contact 131 is provided at a second fixed terminal 133 formed of a conductive material, for example. One of the second fixed terminals 133 is connected to the other of the first fixed terminals 113 of the first contact device 11. The other of the second fixed terminals 133 is connected to the third end 103 of the switch system 100.

[0182] The pair of second movable contacts 132 is provided on, for example, a plate-shaped second movable contact 134 formed of a conductive material. The pair of second movable contacts 132 is provided on, for example, both ends of the second movable contact 134 in the longitudinal direction.

[0183] The second movable contact 134 can move relative to each second fixed terminal 133 between a contact position and a separation position. Here, the contact position is a position of the second movable contact 134 where a pair of second movable contacts 132 are in contact with a pair of second fixed contacts 131, respectively. The separation position is a position of the second movable contact 134 where a pair of second movable contacts 132 are separated from a pair of second fixed contacts 131. In other words, the second movable contact 132 can move between a closed position where it is in contact with the second fixed contacts 131 and a disconnected position where it is separated from the second fixed contacts 131.

[0184] The drive unit 2 of this modification example includes an excitation coil (first excitation coil) 211 for driving the first contact device 11, a movable member (first movable member) 212, and a fixed member (first fixed member) 213. In addition, the drive unit 2 of this modification example further includes a second excitation coil 216 for driving the second contact device 13, a second movable member 217, and a second fixed member 218. The first end of the first excitation coil 211 is connected to the second end 102 of the switch system 100, the second end of the first excitation coil 211 is connected to the first end of the second excitation coil 216, and the second end of the second excitation coil 216 is connected to the first end 101 of the switch system 100. The first excitation coil 211 and the second excitation coil 216 constitute at least a part of the intermediate circuit 210 of the drive unit 2. Therefore, the same current as the current flowing through the first excitation coil 211 flows through the second excitation coil 216.

[0185] The first movable member 212 is formed of a magnetic material. The first movable member 212 can be in the first position ( Fig. 22 The first movable member 212 is held in the first position by a contact pressure spring (not shown). The first fixed member 213 is formed of a magnetic material.

[0186] In the drive unit 2 of this modified example, when an abnormal current flows through the first exciting coil 211, the magnetic field generated by the first exciting coil 211 attracts the first movable member 212 toward the first fixed member 213, so that the first movable member 212 moves from the first position (see Fig. 22 ) moves to the second position.

[0187] The second movable member 217 is formed of a magnetic material. The second movable member 217 can be in the third position ( Fig. 22 The second movable member 217 is held in the third position by a second contact pressure spring (not shown). The second fixed member 218 is formed of a magnetic material.

[0188] In the drive unit 2 of this modified example, when an abnormal current flows through the second exciting coil 216, the magnetic field generated by the second exciting coil 216 attracts the second movable member 217 toward the second fixed member 218, so that the second movable member 217 moves from the third position (see Fig. 22 ) moves to the fourth position.

[0189] That is, in this modification, when no abnormal current flows in the main circuit 930 (intermediate circuit 210), the first movable member 212 is maintained in the first position by the spring force of the first contact pressure spring, and the second movable member 217 is maintained in the third position by the spring force of the second contact pressure spring. As a result, the first movable contact 112 is maintained in the disconnected position, and the second movable contact 132 is maintained in the disconnected position, so that the auxiliary circuit 920 is disconnected.

[0190] On the other hand, when an abnormal current flows through the main circuit 930, an abnormal current flows through the first excitation coil 211, so that the first excitation coil 211 is excited, and the first movable part 212 is attracted to the first fixed part 213 and moves from the first position to the second position. The first movable contact 112 moves from the open position to the closed position. In addition, when an abnormal current flows through the main circuit 930, an abnormal current flows through the second excitation coil 216, so that the second excitation coil 216 is excited, and the second movable part 217 is attracted to the second fixed part 218 and moves from the third position to the fourth position. The second movable contact 132 moves from the open position to the closed position. As a result, the third end 103 and the fourth end 104 of the switch system 100 are short-circuited.

[0191] Here, if Fig. 22 As shown, the first movable contact 114 of this modification moves along the first direction D1. On the other hand, the second movable contact 134 moves along the second direction D2 which is orthogonal to the first direction D1. In summary, in the switch system 100 of this modification, the direction in which the first movable contact 112 moves (the first direction D1) is different from the direction in which the second movable contact 132 moves (the second direction D2).

[0192] As described above, in this modification, the direction in which the first movable contact 112 moves (the direction in which the first movable contact 114 moves) and the direction in which the second movable contact 132 moves (the direction in which the second movable contact 134 moves) are different.

[0193] For example, in the control system 800, when the housing of the system is subjected to an impact in the direction along the first direction D1, the first movable contact 114 moves in the direction along the first direction D1, and the first movable contact 112 may contact the first fixed contact 111. However, even in this case, the possibility that the second movable contact 134 moves in the direction along the second direction D2 due to the impact is low, and thus the possibility that the second movable contact 132 contacts the second fixed contact 131 is low. Therefore, according to this modification, the possibility that the auxiliary circuit 920 is closed unnecessarily due to an impact or the like can be reduced, and the possibility that the starting current flows to the auxiliary circuit 920 unnecessarily can be reduced.

[0194] In addition, in order to drive the second contact device 13, the driving unit 2 may also include a third yoke and a fourth yoke, and may also include a second bimetal plate, instead of the second exciting coil 216, the second movable member 217, and the second fixed member 218. The relationship between the third yoke and the fourth yoke and the second contact device 13 is the same as the relationship between the first yoke 221 and the second yoke 222 and the contact device 11, so the description is omitted. Similarly, the relationship between the second bimetal plate and the second contact device 13 is the same as the relationship between the bimetal plate 231 and the contact device 11, so the description is omitted.

[0195] (1.3.7) Seventh variant

[0196] As a seventh variation of this embodiment, it may also be as follows Fig.23 As shown, the switch system 100 of the control system 800 includes a driven part (first opening and closing part) 1, a driving part 2, a second opening and closing part 3, and a third opening and closing part 4. The structures of the driven part 1 and the driving part 2 are the same as those in the basic example, and thus description thereof is omitted.

[0197] The second opening and closing part 3 is connected in series with the first opening and closing part 1 in the auxiliary circuit 920. Specifically, in the switch system 100, the series circuit of the first opening and closing part 1 and the second opening and closing part 3 is connected between the third end 103 and the fourth end 104. The second opening and closing part 3 is used to open and close the auxiliary circuit 920. Since the auxiliary circuit 920 is connected with the first opening and closing part 1 and the second opening and closing part 3, the starting current flows to the auxiliary circuit 920 only when the first opening and closing part 1 is closed and the second opening and closing part 3 is closed.

[0198] The third opening and closing part 4 is connected to the main circuit 930. Specifically, in the switch system 100, a series circuit of the third opening and closing part 4 and the driving part 2 is connected between the first end 101 and the second end 102.

[0199] The second opening and closing part 3 opens and closes the auxiliary circuit 920 in a manner linked to the opening and closing of the main circuit 930 by the third opening and closing part 4. In detail, when the third opening and closing part 4 closes the main circuit 930, the second opening and closing part 3 closes the auxiliary circuit 920, and when the third opening and closing part 4 opens the main circuit 930, the second opening and closing part 3 opens the auxiliary circuit 920.

[0200] In a specific example, the third opening and closing part 4 connected to the main circuit 930 and the second opening and closing part 3 connected to the auxiliary circuit 920 are composed of a main contact device and an auxiliary contact device of an electromagnetic relay. For example, when the coil in the electromagnet device of the electromagnetic relay is energized, the third opening and closing part (main contact device) 4 is closed, and at the same time, the second opening and closing part (auxiliary contact device) 3 is also closed. When the coil is not energized, the third opening and closing part 4 and the second opening and closing part 3 are each opened. That is, the second opening and closing part 3 is opened and closed according to the opening and closing of the third opening and closing part 4. For example, the opening and closing of the third opening and closing part 4 and the second opening and closing part 3 (whether the coil is energized) are controlled by the control circuit 207.

[0201] In this modification, in the normal state where the circuit breaker 910 is not started, the control circuit 207 controls the conduction and non-conduction of the main circuit 930 by opening and closing the third opening and closing part 4. When the third opening and closing part (main contact device) 4 is closed by the control circuit 207, the second opening and closing part (auxiliary contact device) 3 is also closed. In this state, when an abnormal current flows through the main circuit 930, the driving part 2 uses the abnormal current flowing through the intermediate circuit 210 of the driving part 2 as a driving source to close the first opening and closing part 1. As a result, the starting current flows to the auxiliary circuit 920, and the circuit breaker 910 can cut off the main circuit 930.

[0202] On the other hand, in the normal state, when the third opening and closing unit 4 is opened by the control circuit 207 and no current flows in the main circuit 930, the first opening and closing unit 1 may be closed due to some factors such as impact not caused by the drive unit 2. In this case, in the present modification, the second opening and closing unit 3 is opened by the control circuit 207, so that the starting current does not flow to the auxiliary circuit 920. That is, in the present modification, when no current flows in the main circuit 930 in the normal state (when no power is supplied from the power supply system 200 to the load such as the motor 3002), the starting current does not flow to the auxiliary circuit 920. Therefore, according to the present modification, the possibility of the malfunction of the circuit breaker 910 caused by the unnecessary flow of the starting current to the auxiliary circuit 920 can be reduced.

[0203] In addition, the third opening and closing part 4 (main contact device) may also be shared as either the first main relay 202 or the second main relay 203 of the power supply system 200. That is, the power supply system 200 may only include the first main relay 202 and the second main relay 203 as relays connected to the main circuit 930. Furthermore, it may be that one of the first main relay 202 and the second main relay 203 includes the third opening and closing part 4 as the main contact device and the second opening and closing part 3 as the auxiliary contact device.

[0204] The third opening and closing part 4 and the second opening and closing part 3 are not limited to the main contact device and the auxiliary contact device of the electromagnetic relay. The second opening and closing part 3 may be any structure as long as it opens and closes according to the opening and closing of the third opening and closing part 4.

[0205] (1.3.8) Variant 8

[0206] As an eighth variation of this embodiment, it may also be as follows Fig.24 As shown, the switch system 100 of the control system 800 includes a driven part (first opening and closing part) 1, a driving part (first driving part) 2, a driven part (second opening and closing part) 3, and a second driving part 5. In addition, the structures of the first opening and closing part 1 and the first driving part 2 are the same as the structures of the driven part 1 and the driving part 2 in the first embodiment, and therefore the description thereof is omitted.

[0207] The second opening and closing part 3 is connected in series with the first opening and closing part 1 in the auxiliary circuit 920. Specifically, in the switch system 100, the series circuit of the first opening and closing part 1 and the second opening and closing part 3 is connected between the third end 103 and the fourth end 104. The second opening and closing part 3 opens and closes the auxiliary circuit 920. Since the auxiliary circuit 920 is connected with the first opening and closing part 1 and the second opening and closing part 3, the starting current flows to the auxiliary circuit 920 only when the first opening and closing part 1 is closed and the second opening and closing part 3 is closed.

[0208] The second drive unit 5 uses the abnormal current flowing through the intermediate circuit of the second drive unit 5 as a driving source to close the second opening and closing unit 3. When the magnitude of the abnormal current flowing through the intermediate circuit of the second drive unit 5 is less than the second specified value, the second drive unit 5 closes the second opening and closing unit 3. Here, the second specified value is greater than the first specified value as a specified value for specifying the abnormal current. That is, the first specified value is different from the second specified value.

[0209] In more detail, in the switch system 100, a series circuit of the first drive unit 2 and the second drive unit 5 is connected between the first end 101 and the second end 102. When the current value of the current flowing through the intermediate circuit 210 of the first drive unit 2 is greater than the first specified value (when an abnormal current flows in the main circuit 930), the first drive unit 2 operates to close the first opening and closing unit 1. On the other hand, when the current value of the current flowing through the intermediate circuit of the second drive unit 5 is greater than the first specified value (when an abnormal current flows in the main circuit 930) and the current value of the current is less than the second specified value, the second drive unit 5 operates to close the second opening and closing unit 3.

[0210] The second driving unit 5 includes, for example, a voltage dividing circuit for dividing the voltage applied to the main circuit 930. The second driving unit 5 compares the divided voltage obtained by the voltage dividing circuit with a preset reference voltage. The second driving unit 5 closes the second opening / closing unit 3 only when the divided voltage is less than the reference voltage.

[0211] In this modification, when the current flowing through the intermediate circuit 210 of the first drive unit 2 is greater than a specified value (first specified value), the first drive unit 2 closes the first opening and closing unit 1. On the other hand, when the current flowing through the intermediate circuit of the second drive unit 5 is less than a second specified value (> first specified value), the second drive unit 5 closes the second opening and closing unit 3. That is, in this modification, the starting current flows to the auxiliary circuit 920 only when the current flowing through the main circuit 930 is within a preset range between a lower limit (first specified value) and an upper limit (second specified value). According to this modification, various controls can be achieved.

[0212] (1.3.9) Ninth variant

[0213] Reference Figure 25 to Figure 27 In this modification, the switch system 100 of the control system 800 includes a contact device (first auxiliary contact device) 11, a main contact device 61, a first motion control unit 62, a second auxiliary contact device 63, and a second motion control unit 64.

[0214] The first auxiliary contact device 11 includes a pair of fixed contacts (a pair of first auxiliary fixed contacts) 111 and a pair of movable contacts (a pair of first auxiliary movable contacts) 112 .

[0215] Each first auxiliary fixed contact 111 is provided at a fixed terminal (first auxiliary fixed terminal) 113 formed of a conductive material, for example. One of the pair of first auxiliary fixed terminals 113 is connected to the fourth end 104 of the switch system 100. The other of the pair of first auxiliary fixed terminals 113 is connected to one of the pair of second auxiliary fixed terminals 633 of the second auxiliary contact device 63.

[0216] The pair of first auxiliary movable contacts 112 is provided on, for example, a plate-shaped movable contact (first auxiliary movable contact) 114 formed of a conductive material. The pair of first auxiliary movable contacts 112 is provided on, for example, both ends of the first auxiliary movable contact 114 in the longitudinal direction.

[0217] The first auxiliary movable contact 114 can move relative to each first auxiliary fixed terminal 113 between a contact position and a separation position. Here, the contact position is a position of the first auxiliary movable contact 114 where a pair of first auxiliary movable contacts 112 are in contact with a pair of first auxiliary fixed contacts 111, respectively. The separation position is a position of the first auxiliary movable contact 114 where a pair of first auxiliary movable contacts 112 are separated from a pair of first auxiliary fixed contacts 111. In other words, the first auxiliary movable contact 112 can move between a closed position where it is in contact with the first auxiliary fixed contacts 111 and an open position where it is separated from the first auxiliary fixed contacts 111.

[0218] The main contact device 61 includes a pair of main fixed contacts 611 and a pair of main movable contacts 612. The intermediate circuit 210 of the main contact device 61 includes a pair of main fixed contacts 611 and a pair of main movable contacts 612.

[0219] Each main fixed contact 611 is provided at a main fixed terminal 613 formed of a conductive material, for example. One of the pair of main fixed terminals 613 is connected to the first end 101 of the switch system 100 . The other of the pair of main fixed terminals 613 is connected to the second end 102 of the switch system 100 .

[0220] The pair of main movable contacts 612 is provided on, for example, a plate-shaped main movable contact 614 formed of a conductive material. The pair of main movable contacts 612 is provided on, for example, both ends of the main movable contact 614 in the longitudinal direction.

[0221] The main movable contact 614 can move relative to each main fixed terminal 613 between a contact position and a separation position. Here, the contact position is a position of the main movable contact 614 where a pair of main movable contacts 612 are in contact with a pair of main fixed contacts 611. The separation position is a position of the main movable contact 614 where a pair of main movable contacts 612 are separated from a pair of main fixed contacts 611. In other words, the main movable contact 612 can move between a closed position in contact with the main fixed contacts 611 and an open position in which it is separated from the main fixed contacts 611.

[0222] The first motion control unit 62 includes a first exciting coil 621 , a first movable element 622 , a first stator 623 , and a shaft 624 .

[0223] The first exciting coil 621 is connected to the control circuit 207. The first exciting coil 621 is energized by the control circuit 207 and excited.

[0224] The first movable member 622 is formed of a magnetic material. The first movable member 622 is combined with the first auxiliary movable contact 114 of the first auxiliary contact device 11. The first movable member 622 can be in the first position ( Fig.25 The position shown) and the second position ( Fig.26 The first movable member 622 is held in the first position by a first contact pressure spring (not shown). The first fixed member 623 is formed of a magnetic material.

[0225] In the first motion control unit 62, when the first exciting coil 621 is energized by the control circuit 207, the first movable member 622 is attracted to the first fixed member 623 by the magnetic field generated by the first exciting coil 621. As a result, the first movable member 622 is moved from the first position ( Fig.25 position shown) to a second position ( Fig.26 shown).

[0226] The shaft 624 couples the main movable contact 614 with the first movable member 622. Thus, as the first movable member 622 moves, the main movable contact 614 moves and the first auxiliary movable contact 114 moves. In other words, as the first movable member 622 moves, the main movable contact 612 moves and the first auxiliary movable contact 112 moves.

[0227] Furthermore, when the first movable member 622 is in the first position, the main movable contact 614 is in the separated position, and the first auxiliary movable contact 114 is in the contact position (refer to Fig.25 ). In addition, when the first movable member 622 is in the second position, the main movable contact 614 is in the contact position, and the first auxiliary movable contact 114 is in the separation position (refer to Fig.26 ).

[0228] The second auxiliary contact device 63 is connected to the auxiliary circuit 920 in series with the first auxiliary contact device 11. The second auxiliary contact device 63 includes a pair of second auxiliary fixed contacts 631 and a pair of second auxiliary movable contacts 632.

[0229] Each second auxiliary fixed contact 631 is provided at a second auxiliary fixed terminal 633 formed of a conductive material, for example. One of the pair of second auxiliary fixed terminals 633 is connected to the other of the pair of first auxiliary fixed terminals 113 of the first auxiliary contact device 11. The other of the pair of second auxiliary fixed terminals 633 is connected to the third end 103 of the switch system 100.

[0230] The pair of second auxiliary movable contacts 632 is provided, for example, on a plate-shaped second auxiliary movable contact 634 formed of a conductive material. The pair of second auxiliary movable contacts 632 is provided, for example, at both ends of the second auxiliary movable contact 634 in the longitudinal direction.

[0231] The second auxiliary movable contact 634 can move relative to each second auxiliary fixed terminal 633 between a contact position and a separation position. Here, the contact position is a position where a pair of second auxiliary movable contacts 632 of the second auxiliary movable contact 634 are in contact with a pair of second auxiliary fixed contacts 631, respectively. The separation position is a position where a pair of second auxiliary movable contacts 632 of the second auxiliary movable contact 634 are separated from a pair of second auxiliary fixed contacts 631. In other words, the second auxiliary movable contact 632 can be in a closed position (refer to Fig.26 ) and leaves the disconnected position of the second auxiliary fixed contact 631 (refer to Fig.25 )

[0232] The second motion control unit 64 includes a second exciting coil 641 , a second movable element 642 , and a second stator 643 .

[0233] The second excitation coil 641 is connected to the control circuit 207. The second excitation coil 641 is connected in series with the first excitation coil 621. The second excitation coil 641 is energized by the control circuit 207 together with the first excitation coil 621, and is excited.

[0234] The second movable member 642 is formed of a magnetic material. The second movable member 642 can be in the third position ( Fig.25 The position shown) and the fourth position ( Fig.26 The second movable member 642 is held in the third position ( Fig.25 The second fixing member 643 is formed of a magnetic material.

[0235] In the second motion control unit 64, when the second exciting coil 641 is energized by the control circuit 207, the second movable member 642 is attracted to the second fixed member 643 by the magnetic field generated by the second exciting coil 641. As a result, the second movable member 642 is moved from the third position ( Fig.25 position shown) moves to the fourth position ( Fig.26 shown in the position).

[0236] The second auxiliary movable contact 634 of the second auxiliary contact device 63 is coupled to the second movable member 642 via a rod-shaped shaft 644. Therefore, the second auxiliary movable contact 634 moves with the movement of the second movable member 642. In other words, the second auxiliary movable contact 632 moves with the movement of the second movable member 642.

[0237] Furthermore, when the second movable member 642 is in the third position, the second auxiliary movable contact 634 is in the separated position (refer to Fig.25In addition, when the second movable member 642 is in the fourth position, the second auxiliary movable contact 634 is in the contact position (refer to Fig.26 ).

[0238] In this modification, when the control circuit 207 does not energize the first excitation coil 621 and the second excitation coil 641, the main contact device 61 and the second auxiliary contact device 63 are opened, and the first auxiliary contact device 11 is closed (see Fig.25 At this time, since the main contact device 61 is opened, no current flows in the main circuit 930. In addition, since the second auxiliary contact device 63 is opened, no current flows in the auxiliary circuit 920.

[0239] On the other hand, when the control circuit 207 energizes the first excitation coil 621 and the second excitation coil 641, the main contact device 61 and the second auxiliary contact device 63 are closed, and the first auxiliary contact device 11 is opened (refer to Fig.26 At this time, since the main contact device 61 is closed, current flows through the main circuit 930. On the other hand, since the first auxiliary contact device 11 is opened, current does not flow through the auxiliary circuit 920.

[0240] When the control circuit 207 energizes the first excitation coil 621 and the second excitation coil 641, when an abnormal current flows in the main circuit, an electromagnetic repulsive force is generated between the main fixed contact 611 and the main movable contact 612 of the main contact device 61. That is, the main fixed contact 611 is separated from the main movable contact 612. The electromagnetic repulsive force provides a force to the main movable contact 614 in the direction away from the main fixed terminal 613. Through this electromagnetic repulsive force, the main movable contact 614 moves from the contact position to the separation position. At this time, the first auxiliary movable contact 114 is also subjected to a force in the same direction as the main movable contact 614 via the first movable part 622, so as to move from the separation position to the contact position (refer to Fig. 27 ). As a result, both the first auxiliary contact device 11 and the second auxiliary contact device 63 are closed, and a starting current is supplied from the current supply source 150 to the auxiliary circuit 920 .

[0241] In this modification, the main fixed contact 611 and the main movable contact 612 of the main contact device 61 constitute at least a part of the intermediate circuit 210 of the drive unit 2. The drive unit 2 includes the main contact device 61 (the main fixed contact 611 and the main movable contact 612) and the first movable member 622 and the shaft 624 of the first motion control unit 62.

[0242] In the switch system 100 of this modification, when an abnormal current flows through the main circuit 930, the abnormal current flows to the intermediate circuit 210 of the driver 2. The switch system 100 uses the abnormal current flowing through the intermediate circuit 210 as a driving source for separating the main fixed contact 611 from the main movable contact 612 (a driving source for moving the first movable member 622 to the first position), thereby closing the auxiliary circuit 920. Therefore, by including the control system 800 and the circuit breaker system 900 of the switch system 100 of this modification, it is also possible to shorten the time until the circuit breaker 910 starts to operate.

[0243] In addition, the main contact device 61 may be shared as either the first main relay 202 or the second main relay 203 of the power supply system 200. That is, the power supply system 200 may only include the first main relay 202 and the second main relay 203 as relays connected to the main circuit 930. Furthermore, either the first main relay 202 or the second main relay 203 may include the main contact device 61, the first auxiliary contact device 11, and the first motion control unit 62.

[0244] In this modification, particularly when the main contact device 61 is used in common as the first main relay 202 or the second main relay 203 , it is necessary to make a significant change to the structure of the main circuit 930 (power supply system 200 ).

[0245] In addition, the structure of this modification can also be used in the switch system 100 of the fourth modification. Fig.28 As shown, the structure of the first auxiliary contact device 11 (a contact) of this modification is replaced with the structure of the contact device 51 (b contact) of the fourth modification. Furthermore, the output of the second auxiliary contact device 63 and the output of the contact device 51 are input to the OR circuit, and the output of the OR circuit is inverted by the signal inversion circuit 52. In this way, when the first excitation coil 621 and the second excitation coil 641 are not energized, the contact device 51 is disconnected and the second auxiliary contact device 63 is closed, so the output of the OR circuit is on. In addition, when the first excitation coil 621 and the second excitation coil 641 are energized (refer to Fig.28 ), the contact device 51 is closed, and the second auxiliary contact device 63 is disconnected, so the output of the OR circuit is turned on. Moreover, when the first excitation coil 621 and the second excitation coil 641 are energized, when an abnormal current flows in the intermediate circuit 210, the contact device 51 and the second auxiliary contact device 63 are both disconnected, so the output of the OR circuit becomes turned off. Moreover, the closed output of the OR circuit is inverted by the signal inversion circuit 52, so that the starting current is supplied to the auxiliary circuit 920.

[0246] (1.3.10) Variant 10

[0247] As a tenth variation of this embodiment, it may also be as follows Fig.29 As shown, the current supply source 150 includes a capacitor 152 instead of the constant voltage source 151. Thus, the system can be miniaturized by omitting the constant voltage source 151 and omitting the wiring between the constant voltage source 151 and the control system 800. In addition, for example, even if a power supply of the vehicle 300 constituting the constant voltage source 151 fails, the circuit breaker system 900 can be operated.

[0248] Furthermore, since the third terminal 103 and the fourth terminal 104 of the switch system 100 are disconnected in normal times (when no abnormal current flows in the main circuit 930), the auxiliary circuit 920 is cut off. Therefore, in normal times (ignoring natural discharge), the charge accumulated in the capacitor 152 is hardly consumed.

[0249] (1.3.11) Eleventh Modification

[0250] As an eleventh variation of this embodiment, it may also be as follows Fig.30 As shown, the current supply source 150 includes a capacitor 152 instead of the constant voltage source 151 .

[0251] exist Fig.30 In the circuit breaker system 900, the relay 153 is connected in series with the constant voltage source 151. The capacitor 152 is connected in parallel with the series circuit of the constant voltage source 151 and the relay 153. The relay 153 is controlled by the control circuit 207, for example.

[0252] In this case, by periodically closing the relay 153 , the charge consumed by the natural discharge can be replenished to the capacitor 152 .

[0253] Alternatively, the current supply source 150 may be formed by connecting the constant voltage source 151 and the capacitor 152 in parallel without using the relay 153 .

[0254] (1.3.12) Modification 12

[0255] As a twelfth variation of this embodiment, it may also be as follows Fig.31 As shown, the current supply source 150 includes a transformer 154. The transformer 154 includes a primary winding 1541 and a secondary winding 1542.

[0256] The primary winding 1541 is connected between the second end 102 of the switch system 100 and the second end 802 of the control system 800. In other words, the primary winding 1541 is connected to the main circuit 930. The secondary winding 1542 is connected between the fourth end 104 of the switch system 100 and the fourth end 804 of the control system 800. In other words, the secondary winding 1542 is connected to the auxiliary circuit 920. The secondary winding 1542 is electromagnetically coupled with the primary winding 1541. For example, the primary winding 1541 and the secondary winding 1542 are wound around the same iron core and are electromagnetically coupled.

[0257] When current flows through the primary winding 1541, the secondary winding 1542 is excited. Here, the transformer 154 of this embodiment is configured such that when an abnormal current (current having a current value greater than a specified value) flows through the primary winding 1541, a voltage is generated at both ends of the secondary winding 1542 so that the secondary winding 1542 can output a starting current (current having a current value greater than a preset value).

[0258] When an abnormal current flows through the main circuit 930, the switch system 100 operates using the abnormal current as a driving source to close the auxiliary circuit 920. When no abnormal current flows through the main circuit 930, the switch system 100 opens the auxiliary circuit 920.

[0259] In this modification, when an abnormal current flows through the main circuit 930, the switch system 100 closes the auxiliary circuit 920 and allows the starting current (induced current) to flow from the secondary winding 1542 of the transformer 154 to the auxiliary circuit 920. Thus, when an abnormal current flows through the main circuit 930, the circuit breaker 910 can be started to cut off the main circuit 930.

[0260] In addition, in this modification, when the current value of the current flowing through the intermediate circuit 210 of the driving unit 2 of the switch system 100 is less than the above-mentioned predetermined value, the driven unit 1 is not driven, and the auxiliary circuit 920 is disconnected. Therefore, even if the secondary winding 1542 of the transformer 154 is excited by the current flowing through the main circuit 930 (primary winding 1541), the induced current is not output from the secondary winding 1542, and the current does not flow through the auxiliary circuit 920. Therefore, it is possible to prevent the current from flowing from the auxiliary circuit 920 to the circuit breaker 910 in a state where no abnormal current flows through the main circuit 930.

[0261] (2) Implementation Method 2

[0262] Reference Fig.32 , Fig.33 A control system 800A and a circuit breaker system 900A according to Embodiment 2 will be described. Note that the same components as those of Embodiment 1 (and its modified examples) are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

[0263] The control system 800A of this embodiment includes a driven part 1 and a driving part 2. The driven part 1 is connected to an auxiliary circuit 920. The driving part 2 includes an intermediate circuit 210 connected to a main circuit 930. The intermediate circuit 210 constitutes a part of the main circuit 930. The driven part 1 is driven by the driving part 2.

[0264] like Fig.32 As shown, the control system 800A includes a first end 801A and a second end 802A connected to the main circuit 930. In addition, the control system 800A includes a third end 803A and a fourth end 804A connected to the auxiliary circuit 920. In other words, the driven part 1 is connected between the third end 803A and the fourth end 804A. The intermediate circuit 210 of the driving part 2 is connected between the first end 801A and the second end 802A. When an abnormal current flows through the main circuit 930, the control system 800A uses the abnormal current flowing through the intermediate circuit 210 as a driving source for driving the driven part 1. That is, in the control system 800A, the magnetic field generated by the abnormal current flowing through the intermediate circuit 210 of the driving part 2 is converted into an electromotive force of the current for driving the driven part 1 by energy conversion. As a result, the control system 800A supplies the starting current to the circuit breaker 910 via the auxiliary circuit 920.

[0265] The connection relationship of the control system 800A in the circuit breaker system 900A is the same as the connection relationship of the control system 800 in the circuit breaker system 900 of the first embodiment, and therefore the description thereof is omitted.

[0266] In more detail, Fig.33 As shown, the control system 800A includes a transformer 154. The transformer 154 includes a primary winding 1541 and a secondary winding 1542. The driven unit 1 includes the secondary winding 1542, and the driving unit 2 includes the primary winding 1541.

[0267] The primary winding 1541 is connected between the first end 801A and the second end 802A of the control system 800A. In other words, the primary winding 1541 is connected to the main circuit 930. The primary winding 1541 constitutes at least a part of the intermediate circuit 210 of the drive unit 2. The secondary winding 1542 is connected between the third end 803A and the fourth end 804A of the control system 800A. In other words, the secondary winding 1542 is connected to the auxiliary circuit 920. The secondary winding 1542 is electromagnetically coupled with the primary winding 1541. For example, the primary winding 1541 and the secondary winding 1542 are wound around the same iron core and are electromagnetically coupled.

[0268] When current flows through the primary winding 1541, an induced current flows through the secondary winding 1542. As a result, an induced current flows through the auxiliary circuit 920. Here, when an abnormal current (a current having a current value greater than a specified value) flows through the primary winding 1541, the transformer 154 of this embodiment outputs a starting current (a current having a current value greater than a preset value) from the secondary winding 1542.

[0269] According to the control system 800A of the present embodiment, when an abnormal current flows through the main circuit 930, the control system 800A drives the current flowing through the secondary winding 1542 by the abnormal current flowing through the primary winding 1541. That is, an induced current is generated in the secondary winding 1542. The control system 800A outputs the induced current flowing through the secondary winding 1542 as a starting current to supply the starting current to the auxiliary circuit 920. That is, the control system 800A uses the abnormal current flowing through the primary winding 1541 as a driving source for driving the current of the secondary winding 1542 to supply the starting current to the auxiliary circuit 920. As a result, the circuit breaker 910 is operated, and the main circuit 930 is cut off. In the present embodiment, it is also possible to shorten the time until the circuit breaker 910 is started (the circuit breaker 910 starts to operate) compared with the electrical circuit of Patent Document 1.

[0270] (2.1) First Modification

[0271] As a first variation of this embodiment, it may also be as follows Fig.34 As shown, the control system 800A includes a semiconductor relay 72 .

[0272] The semiconductor relay 72 has a pair of input terminals 721 and a pair of output terminals 722. One of the pair of input terminals 721 of the semiconductor relay 72 is connected to the first terminal 801A of the control system 800A. A primary winding 1541 is connected between the other of the pair of input terminals 721 and the second terminal 802A of the control system 800A. One of the pair of output terminals 722 of the semiconductor relay 72 is connected to the third terminal 803A of the control system 800A. A secondary winding 1542 is connected between the other of the pair of output terminals 722 and the fourth terminal 804A of the control system 800A. Fig.34 As shown, the semiconductor relay 72 of the present embodiment is a transformer-coupled solid-state relay (transformer-coupled SSR).

[0273] The semiconductor relay 72 is turned on by the abnormal current flowing through the main circuit 930 (intermediate circuit 210). When the semiconductor relay 72 is turned on, the auxiliary circuit 920 is closed, and the induced current flows through the secondary winding 1542 by the current flowing through the primary winding 1541 of the transformer 154. As a result, the induced current (starting current) flows through the auxiliary circuit 920.

[0274] As a result, a starting current is supplied from the current supply source 150 to the heating element of the circuit breaker 910 , and the circuit breaker 910 is actuated to cut off the main circuit 930 .

[0275] In the present modification, the semiconductor relay 72 can prevent the current from flowing from the auxiliary circuit 920 to the circuit breaker 910 when no abnormal current flows in the main circuit 930 .

[0276] (2.2) Second Modification

[0277] As a second variation of this embodiment, it may also be as follows Fig.35 As shown in A, the control system 800A includes a current control element (bidirectional Zener diode 73).

[0278] A first end of the bidirectional Zener diode 73 is connected to the fourth end 804A of the control system 800A, and a secondary winding 1542 of the transformer 154 is connected between a second end of the bidirectional Zener diode 73 and the third end 803A of the control system 800A. In other words, the bidirectional Zener diode 73 is connected to the auxiliary circuit 920.

[0279] The breakdown voltage of the bidirectional Zener diode 73 is set to a voltage substantially the same as a voltage generated by the secondary winding 1542 when an abnormal current flows through the primary winding 1541 .

[0280] According to this modification, when the current flowing through the primary winding 1541 (intermediate circuit 210) is less than a specified value, the voltage generated by the secondary winding 1542 is less than the breakdown voltage of the bidirectional Zener diode 73, so that no current flows through the auxiliary circuit 920. In other words, the bidirectional Zener diode 73 prevents a current having a current value less than a preset value from flowing into the auxiliary circuit 920.

[0281] On the other hand, when an abnormal current greater than a specified value flows through the primary winding 1541, the voltage generated by the secondary winding 1542 is greater than the breakdown voltage of the bidirectional Zener diode 73, and a current (a starting current having a current value greater than a preset value) flows through the auxiliary circuit 920. As a result, a starting current is supplied from the current supply source 150 to the heating element of the circuit breaker 910, and the circuit breaker 910 is actuated to cut off the main circuit 930.

[0282] In the present modification, the bidirectional Zener diode 73 can also prevent the current from flowing from the auxiliary circuit 920 to the circuit breaker 910 when no abnormal current flows in the main circuit 930 .

[0283] In addition, the current control element is not limited to the Zener diode 73, and may be, for example, a thyristor.

[0284] Or, if Fig.35 As shown in FIG. 1B , the control system 800A may also include a current control circuit 74, which is used to prevent a current having a current value smaller than a preset value (a current having a current value smaller than the starting current) from flowing to the auxiliary circuit 920. The current control circuit 74 includes a switch 741, voltage-dividing resistors 742 and 743, a comparator 744, a constant voltage source 745, and a diode 746. The switch 741 is an enhanced n-channel MOSFET, the drain of the switch 741 is connected to the third terminal 803A of the control system 800A, the source is connected to one end of the secondary winding 1542, and the gate is connected to the output terminal of the comparator 744. The voltage-dividing resistors 742 and 743 are connected in series between the fourth terminal 804A of the control system 800A and the ground. The non-inverting input terminal of the comparator 744 is connected to the connection point of the voltage-dividing resistors 742 and 743, and the inverting input terminal is connected to the ground via the constant voltage source 745. The anode of the diode 746 is connected to the other end of the secondary winding 1542, and the cathode is connected to the fourth end 804A of the control system 800A. In addition, the connection point between the source of the switch 741 and the secondary winding 1542 is connected to the ground.

[0285] In the current control circuit 74, when the voltage generated at both ends of the secondary winding 1542 is less than the preset threshold voltage, specifically, when the voltage generated at both ends of the secondary winding 1542 is divided by the voltage-dividing resistors 742 and 743 and the voltage obtained is less than the voltage of the constant voltage source 745, the switch 741 is turned off, and no current flows through the auxiliary circuit 920. On the other hand, when the voltage generated at both ends of the secondary winding 1542 is greater than the preset threshold voltage, the switch 741 is turned on, and a current (start-up current) flows through the auxiliary circuit 920.

[0286] In this example, the current control circuit 74 can also prevent the current from flowing from the auxiliary circuit 920 to the circuit breaker 910 when no abnormal current flows in the main circuit 930 .

[0287] (2.3) Third Modification

[0288] As a third modification of the present embodiment, the control system 800A may supply a starting current to the auxiliary circuit 920 in response to a sudden change in the current flowing in the main circuit 930 .

[0289] In one example, Fig.36 As shown, the driving unit 2 of the control system 800A includes: an iron core 700, through which the intermediate circuit 210 constituting a part of the main circuit 930 passes; a primary winding 701 wound on the iron core 700; and a current supply source 702 for supplying a stable current to the primary winding 701. The driven unit 1 includes a secondary winding 703 wound on the iron core 700.

[0290] In this modification, the iron core 700 reaches magnetic saturation due to the magnetic flux generated by the stable current supplied from the current supply source 702 to the primary winding 701. In this state, when an abnormal current flows through the intermediate circuit 210, the current flowing through the intermediate circuit 210 changes sharply. As a result, the magnetic flux passing through the iron core 700 (the magnetic flux passing through the secondary winding 703) changes, and current flows through the secondary winding 703, thereby supplying a starting current to the auxiliary circuit 920.

[0291] In addition, the control system 800A of this modification can also be used as the driving unit 2 of the switch system 100 in the first embodiment and its modification. Figure 3 , Figure 4 ), the two ends of the secondary winding 703 may be respectively connected to the first end 101 and the second end 102. Furthermore, when current flows through the secondary winding 703, the driving unit 2 is actuated to drive the driven unit 1 (to turn on the contact device 11).

[0292] (3) Implementation Method 3

[0293] Reference Fig.37 A control system 800B and a circuit breaker system 900B according to Embodiment 3 will be described. Note that the same components as those of Embodiment 1 and Embodiment 2 (and their modifications) are denoted by the same reference numerals and description thereof will be omitted as appropriate.

[0294] The control system 800B of this embodiment includes a first control system 810 and a second control system 820. The first control system 810 includes a first driving unit 2A and a first driven unit 1A. The second control system 820 includes a second driving unit 2B and a second driven unit 1B. The first driving unit 2A and the first driven unit 1A, and the second driving unit 2B and the second driven unit 1B correspond to the driving unit 2 and the driven unit 1 described in Embodiments 1 and 2 and their modified examples, respectively.

[0295] like Fig.37As shown, the first control system 810 has a first end 811 and a second end 812 connected to the main circuit 930. The first control system 810 has a third end 813 and a fourth end 814 connected to the auxiliary circuit 920. The second control system 820 has a first end 821 and a second end 822 connected to the main circuit 930. The second control system 820 has a third end 823 and a fourth end 824 connected to the auxiliary circuit 920.

[0296] The first end 821 of the second control system 820 is connected to the first end 901 of the circuit breaker system 900B, the second end 822 of the second control system 820 is connected to the first end 811 of the first control system 810, and the second end 812 of the first control system 810 is connected to the first end 911 of the circuit breaker 910. In other words, the first control system 810 and the second control system 820 (specifically, the first drive unit 2A and the second drive unit 2B) are connected in series to the main circuit 930 (the conductor 916 of the circuit breaker 910).

[0297] The third terminal 813 of the first control system 810 and the third terminal 823 of the second control system 820 are connected to the fourth terminal 914 of the circuit breaker 910. The fourth terminal 814 of the first control system 810 and the fourth terminal 824 of the second control system 820 are connected to the third terminal 913 of the circuit breaker 910.

[0298] The driven part 1 (first driven part 1A) of the first control system 810 is connected between the third end 813 and the fourth end 814. The intermediate circuit 210 (first intermediate circuit) of the driving part 2 (first driving part 2A) of the first control system 810 is connected between the first end 811 and the second end 812. When an abnormal current flows through the main circuit 930, the first control system 810 uses the abnormal current flowing through the first intermediate circuit 210 as a driving source for driving the first driven part 1A. Thus, the first control system 810 supplies a starting current to the circuit breaker 910 via the auxiliary circuit 920.

[0299] The driven part 1 (second driven part 1B) of the second control system 820 is connected between the third end 823 and the fourth end 824. The intermediate circuit (second intermediate circuit 210B) of the driving part 2 (second driving part 2B) of the second control system 820 is connected between the first end 821 and the second end 822. When an abnormal current flows through the main circuit 930, the second control system 820 uses the abnormal current flowing through the second intermediate circuit 210B as a driving source for driving the second driven part 1B. Thus, the second control system 820 supplies a starting current to the circuit breaker 910 via the auxiliary circuit 920.

[0300] According to the control system 800B of the present embodiment, as long as the driving unit 2 of any one of the first control system 810 and the second control system 820 drives the corresponding driven unit 1, the starting current is supplied to the circuit breaker 910 via the auxiliary circuit 920. Therefore, for example, even if one of the first control system 810 and the second control system 820 cannot operate due to a fault or the like, the starting current can be supplied to the auxiliary circuit 920 by the other of the first control system 810 and the second control system 820. Therefore, it is possible to more reliably avoid a situation in which the starting current is not supplied to the auxiliary circuit 920 when an abnormal current flows in the main circuit 930.

[0301] In addition, it is assumed here that the first control system 810 is the control system 800 of the fourth modification of the first embodiment (a control system in which the driven part 1 includes a contact device 51 and a signal inversion circuit 52). In addition, it is assumed that the second control system 820 is the control system 800A of the second embodiment (a control system in which the driving part 2 includes a primary winding 1541 and the driven part 1 includes a secondary winding 1542). In this way, if the first control system 810 and the second control system 820 include driven parts 1 of different structures (mechanisms), the characteristics of each other can be complemented. For example, the control system 800 of the fourth modification of the first embodiment has the following characteristics: if the current value of the current is greater than the specified value, it is highly reliable to operate, but the operation takes a little time. On the other hand, the control system 800A of the second embodiment has the following characteristics: if the current value of the abnormal current is not large, it is not easy to operate (the specified value for determining that it is an abnormal current is large), but the operation time is short. In this embodiment, by combining these two systems, the circuit breaker 910 can be driven with a short operation time for abnormal currents with a wide range of current values.

[0302] In addition, in the control system 800B of this embodiment, it may also be that Fig.38 As shown, the first end 821 and the second end 822 of the second control system 820 are connected to the bypass circuit 940 connected in parallel with the main circuit 930. In this case, when an abnormal current flows through the second intermediate circuit 210B constituting a part of the bypass circuit 940 connected to the main circuit 930, the second driving unit 2B of the second control system 820 drives the second driven unit 1B. Fig.38 In the example, the bypass circuit 940 is connected in parallel with the series circuit of the circuit breaker 910 (between the first end 911 and the second end 912) and the first control system 810 (between the first end 811 and the second end 812), but the present invention is not limited thereto. The bypass circuit 940 may also be connected in parallel only with the circuit breaker 910, or may be connected in parallel only with the first control system 810.

[0303] In addition, the control system 800B may include a control system including the driving unit 2 and the driven unit 1 in addition to the first control system 810 and the second control system 820 .

[0304] That is, in the control system 800B of the present embodiment, the driving unit 2 has a plurality of driving units 2 (a first driving unit 2A, a second driving unit 2B). The plurality of driving units 2 each have an intermediate circuit (210, 210B) connected to the main circuit 930. In addition, the driven unit 1 has a plurality of driven units 1 (a first driven unit 1A, a second driven unit 1B) corresponding one to one to the plurality of driving units 2 (a first driving unit 2A, a second driving unit 2B). When an abnormal current flows through the corresponding intermediate circuit 210 of each of the plurality of driving units 2, the abnormal current is used as a driving source for driving the corresponding driven unit 1. The driven unit 1 is driven by the corresponding driving unit 2, thereby supplying a starting current to the auxiliary circuit 920.

[0305] (4) Implementation Method 4

[0306] Reference Fig.39 A control system 800C and a circuit breaker system 900C according to the fourth embodiment will be described.

[0307] The circuit breaker 910 in the circuit breaker system 900C of this embodiment is a pyro-fuse. Fig.39 As shown, the circuit breaker 910 has a pyro-actuator 95 including a gas generator 915, a first fixed terminal 961 including a fixed contact F1, a second fixed terminal 962 including a fixed contact F2, and a movable contact 963 including two movable contacts M1 and M2. The circuit breaker 910 also has a retaining portion 964, a housing 965, and a yoke 966.

[0308] Part of the first fixed terminal 961, part of the second fixed terminal 962, the movable contact 963, and the holding portion 964 are arranged inside the housing 965. The high temperature actuator 95 is held by passing through a through hole formed on the upper surface of the housing 965.

[0309] The first fixed terminal 961 and the second fixed terminal 962 are each conductive and are formed integrally with the housing 965 by, for example, injection molding. A portion of each of the first fixed terminal 961 and the second fixed terminal 962 is exposed to the outside of the housing 965, and the other portion is arranged inside the housing 965. Parts of the first fixed terminal 961 and the second fixed terminal 962 arranged inside the housing 965 function as fixed contacts F1 and F2, respectively. The portion of the first fixed terminal 961 arranged outside the housing 965 is connected to the first end 901 of the circuit breaker system 900C. The portion of the second fixed terminal 962 arranged outside the housing 965 is connected to the second end 902 of the circuit breaker system 900C.

[0310] The movable contact 963 is a conductive plate-shaped member. The movable contact 963 has movable contacts M1 and M2 that are in contact with the fixed contacts F1 and F2, respectively. The movable contact 963 is held by a holding portion 964 (here, a coil spring) in a state where the movable contacts M1 and M2 are connected to the fixed contacts F1 and F2, respectively. The first fixed terminal 961 and the second fixed terminal 962 are short-circuited via the movable contact 963.

[0311] The high temperature actuator 95 includes a gas generator 915, a pressurizing chamber 951, and a piston (actuating pin) 952. The gas generator 915 includes two pin electrodes 9151, a heating element 9152, and a fuel (gunpowder) such as nitrocellulose. The heating element 9152 is, for example, a nickel-chromium alloy wire. The heating element 9152 generates heat when current flows. The heating element 9152 is connected to one end of each of the two pin electrodes 9151. The two pin electrodes 9151 are connected to terminals 923 and 924, respectively.

[0312] When current flows between the terminals 923 and 924, the current flows through the heating element 9152, and the heating element 9152 generates heat. The heat generated by the heating element 9152 ignites the fuel of the gas generator 915, and the fuel burns, thereby generating gas from the gas generator 915. The gas generated by the gas generator 915 is introduced into the pressurized chamber 951, and the pressure in the pressurized chamber 951 increases.

[0313] The first end of the piston 952 ( Fig.39 The area near the upper end of the piston 951 constitutes a part of the outer wall of the pressurized chamber 951. The pressure of the gas in the pressurized chamber 951 presses the first end of the piston 952 to move the piston 952. Fig.39 The piston 952 thus applies a force to the movable contact 963 in a direction that causes the movable contact 963 to separate from the two fixed contacts F1 and F2 (towards the movable contact 963). Fig.39 The movable contact 963 is moved by the force from below.

[0314] The movable contact 963 is pressed and moved by the piston 952, thereby compressing the holding portion 964, and the movable contact M1 separates from the fixed contact F1 and the movable contact M2 separates from the fixed contact F2. As a result, the first fixed terminal 961 and the second fixed terminal 962 are disconnected from each other, and the main circuit 930 is disconnected.

[0315] like Fig.39 As shown, the circuit breaker 910 further includes an auxiliary fixed contact 971 (first contact) and an auxiliary movable contact 981 (second contact). The auxiliary movable contact 981 is provided on a surface ( Fig.39 The yoke 966 (the lower surface of the yoke 966) moves together with the movable contact 963. The pair of auxiliary movable contacts 981 are electrically connected via the conductor provided in the yoke 966.

[0316] Each auxiliary fixed contact 971 is arranged to face the corresponding auxiliary movable contact 981. One auxiliary fixed contact 971 is connected to the terminal 921, and the other auxiliary fixed contact 971 is connected to the terminal 922. Here, the terminal 921 is connected to the terminal 923 via the current supply source 150 and the auxiliary circuit 920, and the terminal 922 is directly connected to the terminal 924.

[0317] In the circuit breaker system 900C of this embodiment, when an abnormal current flows through the movable contact 963 connected to the main circuit 930, an electromagnetic repulsive force is generated between the fixed contact F1 and the movable contact M1. Fig.39 , so that the pair of auxiliary movable contacts 981 respectively contact the auxiliary fixed contacts 971. As a result, the pair of auxiliary fixed contacts 971 are connected via the conductor in the yoke 966, and the starting current is supplied from the current supply source 150 to the gas generator 915 via the auxiliary circuit 920.

[0318] That is, in the circuit breaker system 900C of the present embodiment, the movable contact 963 constitutes the intermediate circuit 210 of the driver 2 , and the contact device including the auxiliary movable contact 981 and the auxiliary fixed contact 971 constitutes the driven part 1 .

[0319] In the circuit breaker system 900C of the present embodiment, it is also possible to shorten the time until the circuit breaker 910 starts operating with a simple configuration.

[0320] In addition, if Fig.40 As shown, the auxiliary fixed contact 971 and the auxiliary movable contact 981 may be configured as b-contacts.

[0321] (5) Other Modifications

[0322] The use of the circuit breaker systems 900, 900A, 900B, and 900C is not limited to the use in the vehicle 300. The circuit breaker systems 900 and 900A can be used to cut off any electric circuit in which a large current such as a short-circuit current may flow.

[0323] The structures of Embodiment 1 (including modified examples), Embodiment 2 (including modified examples), Embodiment 3, and Embodiment 4 can be applied in combination as appropriate.

[0324] (6) Method

[0325] As is clear from the embodiments and variations described above, the control system (800, 800A, 800B, 800C) of the first embodiment is a control system for controlling a circuit breaker (910). The circuit breaker (910) is activated by a starting current flowing through an auxiliary circuit (920) with a current value greater than a preset value, thereby cutting off the main circuit (930). The control system (800, 800A, 800B, 800C) comprises a driving unit (2) and a driven unit (1). The driving unit (2) includes an intermediate circuit (210) connected to the main circuit (930). The driven unit (1) is connected to the auxiliary circuit (920). When an abnormal current with a current value greater than a prescribed value flows through the intermediate circuit (210), the driving unit (2) uses the abnormal current flowing through the intermediate circuit (210) as a driving source for driving the driven unit (1). The driven part (1) is driven by the driving part (2), thereby supplying a starting current to the auxiliary circuit (920).

[0326] The control system (800, 800A, 800B, 800C) of the first embodiment operates when an abnormal current flows through the main circuit (930) to supply a starting current to the auxiliary circuit (920). When the starting current is supplied to the auxiliary circuit (920), the circuit breaker (910) cuts off the main circuit (930). Thus, it is possible to shorten the time from when an abnormal current flows through the main circuit (930) to when the circuit breaker (910) starts to operate.

[0327] Regarding the control system (800, 800B, 800C) of the second embodiment, in the first embodiment, the auxiliary circuit (920) is connected to a current supply source (150) that supplies a starting current. The driven part (1) is connected to the auxiliary circuit (920) in series with the current supply source (150), and the driven part (1) is driven by the driving part (2), thereby closing the auxiliary circuit (920).

[0328] According to the second aspect, the time until the circuit breaker (910) starts to operate can be shortened with a simple structure. In addition, when no abnormal current flows in the main circuit (930), current can be prevented from flowing to the auxiliary circuit (920).

[0329] Regarding the control system (800, 800B) of the third embodiment, in the second embodiment, the driven part (1) has a contact device (11). The contact device (11) has a first contact (fixed contact 111, auxiliary fixed contact 421, fixed contact 511) and a second contact (movable contact 112, auxiliary movable contact 422, movable contact 512) connected to the auxiliary circuit (920). The second contact can move between a closed position and an open position, the closed position being a position where the second contact contacts the first contact, and the open position being a position where the second contact is separated from the first contact. The driving part (2) moves the second contact from the open position to the closed position by an abnormal current flowing through the intermediate circuit (210).

[0330] According to the third embodiment, the driven part (1) is opened and closed by moving the second contact (movable contact 112) spatially (physically), so the reliability is improved. In addition, it is possible to prevent the current from flowing to the auxiliary circuit (920) when no abnormal current flows in the intermediate circuit (210). In addition, the first contact may not necessarily be fixed in position on a frame or the like. In other words, the first contact may not be a fixed contact.

[0331] Regarding the control system (800, 800B) of the fourth embodiment, in the third embodiment, the drive unit (2) includes an excitation coil (211) and a movable part (212). The excitation coil (211) constitutes at least a part of the intermediate circuit (210). The movable part (212) moves from a first position to a second position due to an abnormal current flowing through the excitation coil (211). The second contact (movable contact 112) of the contact device (11) moves along with the movement of the movable part (212). When the movable part (212) is in the first position, the second contact (movable contact 112) of the contact device (11) is in an open position, and when the movable part (212) is in the second position, the second contact (movable contact 112) of the contact device (11) is in a closed position.

[0332] According to the fourth aspect, the time until the circuit breaker (910) starts to operate can be shortened with a simple structure. In addition, when no abnormal current flows in the main circuit (930), current can be prevented from flowing to the auxiliary circuit (920).

[0333] Regarding the control system (800, 800B) of the fifth embodiment, in the third embodiment, the drive unit (2) includes a first yoke (221) and a second yoke (222). The first yoke (221) is relatively fixed relative to a wiring member (105) constituting at least a portion of the intermediate circuit (210). The second yoke (222) is arranged to face the first yoke (221). When an abnormal current flows through the wiring member (105), the second yoke (222) is attracted by the first yoke (221) and moves from the first position to the second position. The second contact (movable contact 112) of the contact device (11) moves with the movement of the second yoke (222). When the second yoke (222) is in the first position, the second contact (movable contact 112) of the contact device (11) is in the open position, and when the second yoke (222) is in the second position, the second contact (movable contact 112) of the contact device (11) is in the closed position.

[0334] According to the fifth aspect, the time until the circuit breaker (910) starts to operate can be shortened with a simple structure. In addition, when no abnormal current flows in the main circuit (930), current can be prevented from flowing to the auxiliary circuit (920).

[0335] Regarding the control system (800, 800B) of the sixth embodiment, in the third embodiment, the drive unit (2) includes a bimetallic plate (231). The bimetallic plate (231) is deformed from a first shape to a second shape by an abnormal current flowing through the intermediate circuit (210). The second contact (movable contact 112) of the contact device (11) moves as the bimetallic plate (231) is deformed. When the bimetallic plate (231) is in the first shape, the second contact (movable contact 112) of the contact device (11) is in an open position, and when the bimetallic plate (231) is in the second shape, the second contact (movable contact 112) of the contact device (11) is in a closed position.

[0336] According to the sixth aspect, the time until the circuit breaker (910) starts to operate can be shortened with a simple structure. In addition, when no abnormal current flows in the main circuit (930), current can be prevented from flowing to the auxiliary circuit (920).

[0337] Regarding the control system (800, 800B) of the seventh embodiment, in the third embodiment, the drive unit (2) includes a main contact device (41). The main contact device (41) includes a main fixed contact (411) and a movable contact (400). The movable contact (400) constitutes an intermediate circuit (210). A main movable contact (412) that contacts and separates from the main fixed contact (411) is provided in the movable contact (400). The main contact device (41) moves the second contact (auxiliary movable contact 422) of the contact device (11) from the open position to the closed position by the electromagnetic repulsion force generated by the abnormal current flowing through the movable contact (400).

[0338] According to the seventh aspect, the time until the circuit breaker (910) starts to operate can be shortened with a simple structure. In addition, when no abnormal current flows in the main circuit (930), current can be prevented from flowing to the auxiliary circuit (920).

[0339] Regarding the control system (800, 800B) of the eighth embodiment, in the third embodiment, the drive unit (2) includes a main contact device (61) and a movable member (first movable member 622). The main contact device (61) includes a main fixed contact (611) and a main movable contact (612) that contacts and separates from the main fixed contact (611). The main contact device (61) constitutes at least a part of the intermediate circuit (210). The movable member (first movable member 622) moves with the movement of the main movable contact (612). The movable member (first movable member 622) moves from a first position to a second position due to an abnormal current flowing through the main contact device (61). The second contact (movable contact 112) of the contact device (11) moves with the movement of the movable member (first movable member 622). When the movable part (first movable part 622) is in the first position, the second contact (movable contact 112) of the contact device (11) is in the open position, and when the movable part (first movable part 622) is in the second position, the second contact (movable contact 112) of the contact device (11) is in the closed position.

[0340] According to the eighth aspect, the time until the circuit breaker (910) starts to operate can be shortened with a simple structure. In addition, when no abnormal current flows in the main circuit (930), current can be prevented from flowing to the auxiliary circuit (920).

[0341] Regarding the control system (800, 800B) of the ninth embodiment, in the second embodiment, the driven part (1) includes a contact device (51) and a signal inversion circuit (52). The contact device (51) includes a first contact (fixed contact 511) and a second contact (movable contact 512) connected to the auxiliary circuit (920). The second contact can move between a closed position and an open position, wherein the closed position is a position where the second contact contacts the first contact, and the open position is a position where the second contact is separated from the first contact. The driving part (2) moves the second contact from the closed position to the open position by an abnormal current flowing through the intermediate circuit (210). When the second contact is in the closed position, the signal inversion circuit (52) prevents the auxiliary circuit (920) from being supplied with a starting current. When the second contact is in the open position, the signal inversion circuit (52) supplies the auxiliary circuit (920) with a starting current.

[0342] According to the ninth aspect, the time until the circuit breaker (910) starts to operate can be shortened by a simple structure. In addition, when no abnormal current flows in the main circuit (930), it is possible to prevent the current from flowing to the auxiliary circuit (920). In addition, even if an abnormal current flows in the intermediate circuit (210) and the driven part 1 (contact device 51) is driven by the driving part (2), it is possible to suppress the occurrence of a pop-up at the driven part (1) (contact device 51).

[0343] Regarding the control system (800, 800B) of the tenth embodiment, in the ninth embodiment, the drive unit (2) includes an excitation coil (211) and a movable part (212). The excitation coil (211) constitutes at least a part of the intermediate circuit (210). The movable part (212) moves from a first position to a second position due to an abnormal current flowing through the excitation coil (211). The second contact (movable contact 512) of the contact device (51) moves along with the movement of the movable part (212). When the movable part (212) is in the first position, the second contact (movable contact 512) of the contact device (51) is in a closed position, and when the movable part (212) is in the second position, the second contact (movable contact 512) of the contact device (51) is in an open position.

[0344] According to the tenth aspect, the time until the circuit breaker (910) starts to operate can be shortened by a simple structure. In addition, when no abnormal current flows in the main circuit (930), current can be prevented from flowing to the auxiliary circuit (920). In addition, the occurrence of a bounce at the driven part (1) (contact device 51) can be suppressed.

[0345] Regarding the control system (800, 800B) of the eleventh embodiment, in the ninth embodiment, the drive unit (2) includes a first yoke (221) and a second yoke (222). The first yoke (221) is relatively fixed relative to a wiring member (105) constituting at least a portion of the intermediate circuit (210). The second yoke (222) is arranged to face the first yoke (221). When an abnormal current flows through the wiring member (105), the second yoke (222) is attracted by the first yoke (221) and moves from the first position to the second position. The second contact (movable contact 512) of the contact device (51) moves with the movement of the second yoke (222). When the second magnetic yoke (222) is in the first position, the second contact (movable contact 512) of the contact device (51) is in the closed position, and when the second magnetic yoke (222) is in the second position, the second contact (movable contact 512) of the contact device (51) is in the open position.

[0346] According to the eleventh aspect, the time until the circuit breaker (910) starts to operate can be shortened by a simple structure. In addition, when no abnormal current flows in the main circuit (930), current can be prevented from flowing to the auxiliary circuit (920). In addition, the occurrence of a bounce at the driven part (1) (contact device 51) can be suppressed.

[0347] Regarding the control system (800, 800B) of the twelfth embodiment, in the ninth embodiment, the drive unit (2) includes a bimetallic plate (231). The bimetallic plate (231) is deformed from a first shape to a second shape by an abnormal current flowing through the intermediate circuit (210). The second contact (movable contact 512) of the contact device (51) moves as the bimetallic plate (231) is deformed. When the bimetallic plate (231) is in the first shape, the second contact (movable contact 512) of the contact device (51) is in a closed position, and when the bimetallic plate (231) is in the second shape, the second contact (movable contact 512) of the contact device (51) is in an open position.

[0348] According to the twelfth aspect, the time until the circuit breaker (910) starts to operate can be shortened by a simple structure. In addition, when no abnormal current flows in the main circuit (930), current can be prevented from flowing to the auxiliary circuit (920). In addition, the occurrence of a bounce at the driven part (1) (contact device 51) can be suppressed.

[0349] Regarding the control system (800, 800B) of the 13th embodiment, in the 9th embodiment, the drive unit (2) includes a main contact device (41). The main contact device (41) includes a main fixed contact (411) and a movable contact (400). The movable contact (400) constitutes an intermediate circuit (210). The movable contact (400) is provided with a main movable contact (412) that contacts and separates from the main fixed contact (411). The main contact device (41) moves the second contact (auxiliary movable contact 422) of the contact device (11) from the closed position to the open position by the electromagnetic repulsion force generated by the abnormal current flowing through the movable contact (400).

[0350] According to the thirteenth aspect, the time until the circuit breaker (910) starts to operate can be shortened by a simple structure. In addition, when no abnormal current flows in the main circuit (930), current can be prevented from flowing to the auxiliary circuit (920). In addition, the occurrence of a bounce at the driven part (1) (contact device 51) can be suppressed.

[0351] Regarding the control system (800, 800B) of the 14th embodiment, in the 9th embodiment, the drive unit (2) includes a main contact device (61) and a movable member (first movable member 622). The main contact device (61) includes a main fixed contact (611) and a main movable contact (612) that contacts and separates from the main fixed contact (611). The main contact device (61) constitutes at least a part of the intermediate circuit (210). The movable member (first movable member 622) moves with the movement of the main movable contact (612). The movable member (first movable member 622) moves from a first position to a second position due to an abnormal current flowing through the main contact device (61). The second contact (movable contact 112) of the contact device (51) moves with the movement of the movable member (first movable member 622). When the movable part (first movable part 622) is in the first position, the second contact (movable contact 512) of the contact device (51) is in the closed position, and when the movable part (first movable part 622) is in the second position, the second contact (movable contact 512) of the contact device (51) is in the open position.

[0352] According to the fourteenth aspect, the time until the circuit breaker (910) starts to operate can be shortened by a simple structure. In addition, when no abnormal current flows in the main circuit (930), current can be prevented from flowing to the auxiliary circuit (920). In addition, the occurrence of a bounce at the driven part (1) (contact device 51) can be suppressed.

[0353] Regarding the control system (800, 800B) of the fifteenth aspect, in any one of the third to fourteenth aspects, the driven part (1) has a second contact device (13) in addition to the first contact device (11, 51) as the contact device (11, 51). The first contact device (11, 51) has a first fixed contact (111, 511) as the first contact (fixed contact 111, 511) and a first movable contact (112, 512) as the second contact (movable contact 112, 512). The second contact device (13) has a second fixed contact (131) and a second movable contact (132). The second fixed contact (131) and the second movable contact (132) are connected to the auxiliary circuit (920). The second movable contact (132) can move between a closed position and an open position, wherein the closed position is a position where the second movable contact (132) contacts the second fixed contact (131), and the open position is a position where the second movable contact (132) leaves the second fixed contact (131). The direction in which the first movable contact (112, 512) moves is different from the direction in which the second movable contact (132) moves.

[0354] According to the fifteenth aspect, the possibility of a starting current flowing unnecessarily in the auxiliary circuit (920) due to a shock or the like can be reduced.

[0355] Regarding the control system (800, 800B) of the sixteenth embodiment, in the second embodiment, the driven part (1) includes a semiconductor relay (12) connected to the auxiliary circuit (920). The driving part (2) includes a first winding (241) constituting at least a part of the intermediate circuit (210) and a second winding (242) electromagnetically coupled to the first winding (241). The semiconductor relay (12) is driven by an induced current to close the auxiliary circuit (920), wherein the induced current is a current generated in the second winding (242) due to an abnormal current flowing through the first winding (241).

[0356] According to the sixteenth aspect, it is possible to shorten the time until the circuit breaker (910) starts operating with a simple structure.

[0357] Regarding the control system (800, 800B) of the seventeenth aspect, in any one of the second to sixteenth aspects, in addition to the first opening and closing part (1) as the driven part (1), a second opening and closing part (3) and a third opening and closing part (4) are further provided. The second opening and closing part (3) is connected in series with the first opening and closing part (1) in the auxiliary circuit (920) and is used to open and close the auxiliary circuit (920). The third opening and closing part (4) is connected to the main circuit (930) and is used to open and close the main circuit (930). The second opening and closing part (3) opens and closes the auxiliary circuit (920) in a manner linked to the opening and closing of the main circuit (930) by the third opening and closing part (4). When the third opening and closing part (4) closes the main circuit (930), the second opening and closing part (3) closes the auxiliary circuit (920), and when the third opening and closing part (4) opens the main circuit (930), the second opening and closing part (3) opens the auxiliary circuit (920).

[0358] According to the seventeenth aspect, the possibility of the starting current flowing unnecessarily in the auxiliary circuit (920) can be reduced.

[0359] The control system (800, 800B) of the eighteenth aspect is, in any one of the second to seventeenth aspects, further comprising a current supply source (150).

[0360] According to the eighteenth aspect, it is possible to shorten the time until the circuit breaker (910) starts operating with a simple structure.

[0361] Regarding the control system (800, 800B) of the nineteenth aspect, in any one of the second to eighteenth aspects, the current supply source (150) includes a constant voltage source (151) that outputs a preset voltage.

[0362] According to the nineteenth aspect, when the auxiliary circuit (920) is closed, a starting current can be stably supplied from the constant voltage source (151) to the auxiliary circuit (920).

[0363] Regarding the control system (800, 800B) of the 20th aspect, in any one of the 2nd to 19th aspects, the current supply source (150) includes a transformer (154). The transformer (154) includes a primary winding (1541) and a secondary winding (1542). The primary winding (1541) is connected to the main circuit (930). The secondary winding (1542) is electromagnetically coupled to the primary winding (1541). The secondary winding (1542) is connected to the auxiliary circuit (920). The current supply source (150) supplies a starting current from the secondary winding (1542) in response to an abnormal current flowing through the primary winding (1541).

[0364] According to the twentieth aspect, it is possible to shorten the time until the circuit breaker (910) starts to operate with a simple structure.

[0365] Regarding the control system (800, 800B) of a 21st aspect, in any one of the second to 20th aspects, the current supply source (150) includes a capacitor (152).

[0366] According to the 21st aspect, it is possible to shorten the time until the circuit breaker (910) starts to operate with a simple structure.

[0367] Regarding the control system (800A, 800B) of the 22nd embodiment, in the first embodiment, the driving unit (2) has a primary winding (1541). The primary winding (1541) constitutes at least a part of the intermediate circuit (210). The driven unit (1) has a secondary winding (1542). The secondary winding (1542) is electromagnetically coupled to the primary winding (1541). The secondary winding (1542) is connected to the auxiliary circuit (920). The control system (800A) supplies a starting current from the secondary winding (1542) by an abnormal current flowing through the primary winding (1541).

[0368] According to the 22nd aspect, it is possible to shorten the time until the circuit breaker (910) starts to operate with a simple structure.

[0369] Regarding the control system (800, 800A, 800B) of the 23rd embodiment, in the first embodiment, the driving unit (2) includes an iron core (700), a primary winding (701), and a current supply source (702). The intermediate circuit (210) passes through the iron core (700). The primary winding (701) is wound around the iron core (700). The current supply source (702) supplies current to the primary winding (701). The driven unit (1) includes a secondary winding (703) wound around the iron core (700).

[0370] According to the 23rd aspect, it is possible to shorten the time until the circuit breaker (910) starts to operate with a simple structure.

[0371] Regarding the control system (800A, 800B) of the 24th aspect, in the 22nd or 23rd aspect, a semiconductor relay (72) is further provided. The semiconductor relay (72) is connected to the auxiliary circuit (920) and is used to open and close the auxiliary circuit (920). The semiconductor relay (72) uses the abnormal current flowing through the intermediate circuit (210) as a driving source to close the auxiliary circuit (920).

[0372] According to the 24th aspect, it is possible to prevent current (induced current from the secondary winding 1542) from flowing into the auxiliary circuit (920) when no abnormal current is flowing in the main circuit (930).

[0373] Regarding the control system (800A, 800B) of the 25th aspect, in any one of the 22nd to 24th aspects, it further comprises a current control element (Zener diode 73) or a current control circuit (74) connected to the auxiliary circuit (920). The current control element (Zener diode 73) or the current control circuit (74) prevents a current having a current value smaller than the preset value from flowing to the auxiliary circuit (920).

[0374] According to the twenty-fifth embodiment, it is possible to prevent current (induced current from the secondary winding 1542) from flowing into the auxiliary circuit (920) when no abnormal current is flowing in the main circuit (930).

[0375] Regarding the control system (800B) of the 26th embodiment, in any one of the 1st to 25th embodiments, in addition to the first driving unit (2A) as the driving unit (2), there is also a second driving unit (2B), and in addition to the first driven unit (1A) as the driven unit (1), there is also a second driven unit (1B). The second driving unit (2B) includes a second intermediate circuit (210B) connected to the main circuit (930). The second driven unit (1B) is connected to the auxiliary circuit (920). When an abnormal current flows through the second intermediate circuit (210B), the second driving unit (2B) uses the abnormal current as a driving source for driving the second driven unit (1B). The second driven unit (1B) is driven by the second driving unit (2B), thereby supplying a starting current to the auxiliary circuit (920).

[0376] According to the 26th embodiment, compared with a case where only one of the first driven part and the second driven part is provided, when an abnormal current flows in the main circuit (930), the circuit breaker (910) can be operated more reliably.

[0377] Regarding the control system (800B) of the 27th embodiment, in the 26th embodiment, the first driven part (1A) has a contact device (51) and a signal inversion circuit (52). The contact device (51) has a first contact (fixed contact 511) and a second contact (movable contact 512) connected to the auxiliary circuit (920). The second contact can move between a closed position and an open position, the closed position is a position where the second contact contacts the first contact, and the open position is a position where the second contact is separated from the first contact. The first drive part (2A) moves the second contact from the closed position to the open position by an abnormal current flowing through the intermediate circuit (210). When the second contact is in the closed position, the signal inversion circuit (52) prevents the auxiliary circuit (920) from being supplied with a starting current. When the second contact is in the open position, the signal inversion circuit (52) supplies the auxiliary circuit (920) with a starting current. The second drive part (2B) has a primary winding (1541). The primary winding (1541) constitutes at least a part of the second intermediate circuit (210B). The second driven part (1B) has a secondary winding (1542). The secondary winding (1542) is electromagnetically coupled with the primary winding (1541). The secondary winding (1542) is connected to the auxiliary circuit (920). A startup current is supplied from the secondary winding (1542) to the auxiliary circuit (920) by an abnormal current flowing through the primary winding (1541).

[0378] According to the control system (800B) of the twenty-seventh aspect, when an abnormal current flows in the main circuit (930), the circuit breaker (910) can be operated more reliably.

[0379] Regarding the control system (800C) of the 28th embodiment, in the first or second embodiment, the circuit breaker (910) includes a movable contact (963), a fixed terminal (961), a holding portion (964), an auxiliary movable contact (971), and an auxiliary fixed contact (981). The movable contact (963) constitutes an intermediate circuit (210) of the drive portion (2). The fixed terminal (961) is in contact with the movable contact (963). The holding portion (964) provides a holding force to the movable contact (963) for keeping the movable contact (963) in contact with the fixed terminal (961). The auxiliary movable contact (981) moves in response to the movement of the movable contact (963). The auxiliary fixed contact (971) and the auxiliary movable contact (981) face each other. The movable contact (963) moves from a first position to a second position against a holding force by an electromagnetic repulsion force generated by an abnormal current flowing through the movable contact (963). One of the first position and the second position is a position where the auxiliary movable contact (981) is separated from the auxiliary fixed contact (971), and the other of the first position and the second position is a position where the auxiliary movable contact (981) contacts the auxiliary fixed contact (971).

[0380] According to the control system (800C) of the twenty-eighth embodiment, it is possible to shorten the time until the circuit breaker (910) starts to operate with a simple structure.

[0381] A circuit breaker system (900, 900A, 900B, 900C) according to a 29th aspect includes the control system (800, 800A, 800B, 800C) according to any one of the first to 28th aspects and a circuit breaker (910).

[0382] According to the 29th aspect, it is possible to shorten the time until the circuit breaker (910) starts to operate when an abnormal current flows in the main circuit (930).

[0383] The structures of the second to twenty-eighth aspects are not essential structures of the control system (800, 800A, 800B, 800C) and can be omitted as appropriate.

[0384] Description of Reference Numerals

[0385] 105: wiring member; 1: driven part, first opening and closing part; 11: contact device, first contact device; 111: fixed contact, first fixed contact (first contact); 112: movable contact, first movable contact (second contact); 12: semiconductor relay; 13: second contact device; 131: second fixed contact; 132: second movable contact; 1A: first driven part; 1B: second driven part; 2: driving part; 210: intermediate circuit; 21 1: excitation coil; 212: movable part; 221: first yoke; 222: second yoke; 231: bimetallic plate; 241: first winding; 242: second winding; 3: second opening and closing part; 4: third opening and closing part; 2A: first driving part; 2B: second driving part; 210B: intermediate circuit; 150: current supply source; 151: constant voltage source; 152: capacitor; 154: transformer; 1541: primary winding; 1542: secondary winding; 400: movable contact; 41: main contact device; 411: main fixed contact; 412: main movable contact; 421: auxiliary fixed contact; 422: auxiliary movable contact; 51: contact device; 511: fixed contact; 512: movable contact; 52: signal inversion circuit; 61: main contact device; 611: main fixed contact; 612: main movable contact; 622: first movable part (movable part); 700: iron core; 701: primary winding; 702: current Supply source; 703: secondary winding; 72: semiconductor relay; 73: bidirectional Zener diode (current control element); 800, 800A, 800B, 800C: control system; 900, 900A, 900B, 900C: circuit breaking system; 910: circuit breaker; 920: auxiliary circuit; 930: main circuit; 961: fixed terminal; 963: movable contact; 964: holding part; 971: auxiliary movable contact; 981: auxiliary fixed contact.

Claims

1. A switch system electrically connected to a gas generator of a circuit breaker for controlling the supply of a starting current, the circuit breaker comprising: First terminal; an electrical conductor electrically connected to the first terminal; a second terminal electrically connected to the first terminal via the conductor; and The gas generator is provided in the circuit breaker so as to be electrically insulated from the first terminal and the second terminal, and generates gas when the starting current is supplied. When an abnormal current flows, the circuit breaker cuts off the conduction between the first terminal and the second terminal by using the pressure of the gas. in, The switch system comprises a switch, The switch has: First contact point; as well as a second contact, wherein when the abnormal current does not flow, the second contact is separated from the first contact, In the switch, when the abnormal current flows, the first contact and the second contact are brought into contact with each other by a magnetic field generated by the abnormal current.

2. A switch system electrically connected to a gas generator of a circuit breaker for controlling the supply of a starting current, the circuit breaker comprising: First terminal; an electrical conductor electrically connected to the first terminal; a second terminal electrically connected to the first terminal via the conductor; and The gas generator is provided in the circuit breaker so as to be electrically insulated from the first terminal and the second terminal, and generates gas when the starting current is supplied. When an abnormal current flows, the circuit breaker cuts off the conduction between the first terminal and the second terminal by using the pressure of the gas. in, The switch system comprises: a winding that is electromagnetically coupled to the abnormal current and generates an induced current through a magnetic field generated by the abnormal current when the abnormal current flows; as well as The switch is electrically connected to the winding, is opened when the induction current is not input, and is closed when the induction current is input.

3. The switch system according to claim 2, wherein: The switch has: an input terminal electrically connected to the winding; and The output terminal is provided insulated from the input terminal and can be electrically connected to the gas generator.

4. The switch system according to claim 3, wherein: The switch is a semiconductor relay.

5. A switch system, used in a circuit breaker system in a manner electrically connected to a gas generator of a circuit breaker, for controlling the supply of a starting current to the gas generator, wherein: The circuit breaker system has: A circuit breaker having a first terminal; a conductor electrically connected to the first terminal; a second terminal electrically connected to the first terminal via the conductor; and a gas generator provided in the circuit breaker to be electrically insulated from the first terminal and the second terminal, and generating gas when the starting current is supplied, wherein the circuit breaker cuts off conduction between the first terminal and the second terminal by using the pressure of the gas when an abnormal current flows; a main circuit comprising the first terminal, the electrical conductor, and the second terminal; as well as an auxiliary circuit comprising said gas generator, Wherein, the switch system comprises: A voltage dividing circuit that divides a voltage applied to the main circuit; and The opening and closing portion is turned on when the divided voltage obtained by the voltage dividing circuit is smaller than a reference voltage, and is turned off when the divided voltage obtained by the voltage dividing circuit is larger than the reference voltage.

6. A circuit breaker system comprising: Circuit breakers; and a switch system having a switch electrically connected to the circuit breaker, in, The circuit breaker has: First terminal; an electrical conductor electrically connected to the first terminal; a second terminal electrically connected to the first terminal via the conductor; as well as a gas generator, which is provided in the circuit breaker so as to be electrically insulated from the first terminal and the second terminal and generates gas when a starting current is supplied thereto, The switch has: a first contact electrically connected to the gas generator; as well as The second contact is separated from the first contact when no abnormal current flows. In the switch, when the abnormal current flows, the first contact and the second contact are brought into contact with each other by a magnetic field generated by the abnormal current. The gas generator is supplied with the starting current via the first contact and the second contact, The conductor is broken or moved by the pressure of the gas generated by the gas generator, thereby cutting off the conduction between the first terminal and the second terminal.

7. A circuit breaker system comprising: A circuit breaker having a first terminal; an electrical conductor electrically connected to the first terminal; a second terminal electrically connected to the first terminal via the electrical conductor; and a gas generator provided in the circuit breaker to be electrically insulated from the first terminal and the second terminal and to generate gas when a starting current is supplied thereto; a switch system electrically connected to the circuit breaker; a main circuit comprising the first terminal, the electrical conductor, and the second terminal; as well as an auxiliary circuit comprising said gas generator, Wherein, the switch system comprises: a winding that is electromagnetically coupled to the main circuit and generates an induced current through a magnetic field generated by an abnormal current when an abnormal current flows through the main circuit; as well as a switch, which is electrically connected to the winding and the gas generator, is disconnected when the induction current is not input, and is connected when the induction current is input, The gas generator is supplied with the starting current via the switch to which the induced current is input, The conductor is broken or moved by the pressure of the gas generated by the gas generator, thereby cutting off the conduction between the first terminal and the second terminal.

8. The circuit breaker system according to claim 7, wherein: The switch has: an input terminal electrically connected to the winding; and an output terminal, which is insulated from the input terminal and electrically connected to the gas generator, The gas generator is supplied with the starting current through the output terminal of the switch to which the induced current is input via the input terminal.

9. A circuit breaker system comprising: A circuit breaker having a first terminal; an electrical conductor electrically connected to the first terminal; a second terminal electrically connected to the first terminal via the electrical conductor; and a gas generator provided in the circuit breaker to be electrically insulated from the first terminal and the second terminal and to generate gas when a starting current is supplied thereto; a switch system electrically connected to the gas generator of the circuit breaker; a main circuit comprising the first terminal, the electrical conductor, and the second terminal; as well as an auxiliary circuit comprising said gas generator, Wherein, the switch system comprises: A voltage dividing circuit that divides a voltage applied to the main circuit; and an opening and closing portion, which is turned on when the divided voltage obtained by the voltage dividing circuit is less than the reference voltage, and is turned off when the divided voltage obtained by the voltage dividing circuit is greater than the reference voltage, The gas generator is supplied with the starting current via the opening and closing portion that is turned on, and the conductor is broken or moved by the pressure of the gas generated by the gas generator, thereby cutting off the conduction between the first terminal and the second terminal.

10. A power supply system comprising: The circuit breaker system according to any one of claims 6 to 9, comprising the first terminal and the second terminal electrically connected to the first terminal; a battery electrically connected to the second terminal of the circuit breaker system; a main relay electrically connected to the battery; and A control circuit controls the opening and closing of the main relay. in, When an abnormal current is generated, the circuit breaker system operates independently of the control circuit to cut off the conduction between the first terminal and the second terminal, thereby stopping the power supply from the battery.

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