WO2022244687A1 - Dispositif de commande de blocage et système de commande de blocage - Google Patents

Dispositif de commande de blocage et système de commande de blocage Download PDF

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Publication number
WO2022244687A1
WO2022244687A1 PCT/JP2022/020173 JP2022020173W WO2022244687A1 WO 2022244687 A1 WO2022244687 A1 WO 2022244687A1 JP 2022020173 W JP2022020173 W JP 2022020173W WO 2022244687 A1 WO2022244687 A1 WO 2022244687A1
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WIPO (PCT)
Prior art keywords
signal
unit
path
outputs
power supply
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PCT/JP2022/020173
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English (en)
Japanese (ja)
Inventor
宏樹 田中
佑樹 杉沢
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株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
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Publication of WO2022244687A1 publication Critical patent/WO2022244687A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Definitions

  • the present disclosure relates to a shutdown control device and a shutdown control system.
  • Patent Document 1 discloses a first power supply section, a second power supply section, and a conductive path that electrically connects these power supply sections.
  • the conductive path is provided with a switch that switches between a cutoff state for cutting off the energization of the first power supply unit and the second power supply unit and a permitting state for allowing the energization.
  • the switch is configured to switch to a cut-off state when an overcurrent flows.
  • the present disclosure has been completed based on the circumstances as described above, and includes an interruption control device and an interruption control that can favorably interrupt current flowing through a conductive path when a ground fault occurs in the conductive path.
  • the purpose is to provide a system.
  • the first disclosed cut-off control device includes: a power supply; a power path that has a first conductive path and a second conductive path and is a path for transmitting power from the power supply unit; When an on-signal is given, it switches to a permissive state in which current is allowed between the first conducting path and the second conducting path, and when an off-signal is given, the first conducting path and the second conducting path are switched to a permissive state.
  • a switching unit that switches to a cutoff state that cuts off the energization with the path; a determination device that outputs an anomaly signal when an anomaly occurs in a supply device that supplies power to the power path, and outputs a normal signal when no anomaly occurs; used in power supply systems with a control unit that outputs a permission signal and a cutoff signal, and a driving unit that provides the switching unit with the ON signal and the OFF signal;
  • the drive unit supplies the OFF signal to the switching unit when the abnormality signal is issued from the determination device, and the ON state according to the permission signal when the abnormality signal is not issued from the determination device.
  • a signal is output, and the OFF signal is output in response to the cutoff signal.
  • the shut-off control system of the second disclosure includes: a power supply; a power path that has a first conductive path and a second conductive path and is a path for transmitting power from the power supply unit; When an on-signal is given, it switches to a permissive state in which current is allowed between the first conducting path and the second conducting path, and when an off-signal is given, the first conducting path and the second conducting path are switched to a permissive state.
  • the shut-off control device has a drive unit,
  • the drive unit has a control unit that outputs a permission signal and a cutoff signal, and provides the switch unit with the on signal and the off signal,
  • the drive unit supplies the OFF signal to the switching unit when the abnormality signal is issued from the determination device, and the ON state according to the permission signal when the abnormality signal is not issued from the determination device.
  • a signal is output, and the OFF signal is output in response to the cutoff signal.
  • the current flowing through the conductive path can be cut off satisfactorily.
  • FIG. 1 is a schematic diagram showing the configuration of a power supply system provided with the shutdown control device of Embodiment 1.
  • FIG. FIG. 2 is a table of signals output from the logic section according to the input states of the abnormal signal, the enable signal, and the cutoff signal.
  • FIG. 3 is a flow chart showing an example of the operation of the cutoff control device of the first embodiment.
  • FIG. 4 is a timing chart showing transitions of an abnormal signal, an off signal, and an on signal according to changes in the output current from the alternator.
  • FIG. 5 is a schematic diagram showing the configuration of a power supply system provided with the shutdown control device of Embodiment 2. As shown in FIG. FIG. 6 is a timing chart showing transitions of an abnormal signal, an off signal, and an on signal according to changes in the output voltage from the alternator.
  • the interruption control device of the present disclosure is used in a power supply system having a power supply section, a power path, a switching section, and a determination device.
  • the power path has a first conductive path and a second conductive path, and is a path that transmits power from the power supply.
  • the switching unit switches to an allowable state that permits energization between the first conductive path and the second conductive path when the ON signal is given, and switches the first conductive path and the second conductive path when the OFF signal is given. Switches to a cutoff state that cuts off the current between the circuit and the circuit.
  • the determination device outputs an anomaly signal when an anomaly occurs in a supply device that supplies electric power to the power path, and outputs a normal signal when an anomaly does not occur.
  • This shut-off control device has a drive section.
  • the drive section has a control section that outputs a permission signal and a cutoff signal, and provides an on signal and an off signal to the switching section.
  • the drive unit provides an OFF signal to the switching unit when an abnormality signal is issued from the determination device, outputs an ON signal in response to the permission signal when no abnormality signal is issued from the determination device, and outputs an ON signal in response to the cutoff signal. to output an off signal.
  • the drive unit gives an off signal to the switching unit.
  • the switching unit can be switched to the blocking state.
  • the power supply unit includes a first power supply unit electrically connected to the first conductive path and a second power supply unit electrically connected to the second conductive path.
  • the disconnection control device described in [2] above can supply power to each of the first conductive path and the second conductive path even when the switching unit is switched to the disconnection state by the control unit.
  • the drive section of the cut-off control device of [1] or [2] has an input path for inputting an abnormal signal, and can give an off signal to the switching section when an abnormal signal is input to the input path. .
  • the drive unit of the cutoff control device described in [3] above has an input path for inputting an abnormality signal, switching is performed based on an abnormality signal from various types of determination devices capable of outputting an abnormality signal. can be given an off signal to the
  • the drive section of the cut-off control device of [3] above has a logic section that gives a signal to the switching section. and cut-off signal is output, the OFF signal can be given to the switching unit.
  • the logic unit When no abnormal signal is input from the input path, the logic unit provides an ON signal to the switching unit when a permission signal is input from the control unit, and turns off the switching unit when a cutoff signal is input from the control unit. can give a signal.
  • the off signal can be given to the switching unit in a form that gives priority to the abnormal signal by the logic unit, so the control from the determination device has priority over the control from the control unit.
  • the control unit of the cutoff control device of [1] or [2] above is configured to receive normal and abnormal signals, and can output a cutoff signal when an abnormal signal is input.
  • the control unit when an abnormal signal is received from the determination device, the control unit can output a shut-off signal. Since it can output a signal, it is easy to make a simple configuration.
  • the shutdown control system of the present disclosure includes a power supply section, a power path, a switching section, a determination device, and a shutdown control device.
  • the power path has a first conductive path and a second conductive path, and is a path that transmits power from the power supply.
  • the switching unit switches to an allowable state that permits energization between the first conductive path and the second conductive path when the ON signal is given, and switches the first conductive path and the second conductive path when the OFF signal is given. Switches to a cutoff state that cuts off the current between the circuit and the circuit.
  • the determination device outputs an anomaly signal when an anomaly occurs in a supply device that supplies electric power to the power path, and outputs a normal signal when an anomaly does not occur.
  • the cut-off control device controls the switching unit.
  • the shut-off control device has a drive section.
  • the drive section has a control section that outputs a permission signal and a cutoff signal, and provides an on signal and an off signal to the switching section.
  • the drive unit provides an OFF signal to the switching unit when an abnormality signal is issued from the determination device, outputs an ON signal in response to the permission signal when no abnormality signal is issued from the determination device, and outputs an ON signal in response to the cutoff signal. to output an off signal.
  • the driving unit gives an off signal to the switching unit when an abnormal signal is issued from the determination device.
  • the switching unit can be switched to the blocking state.
  • FIG. 1 illustrates a power supply system 100 provided with a shutdown control device 70 according to the first embodiment.
  • the power supply system 100 is used as a power supply for operating the loads 92, 94, etc. of the vehicle on which it is mounted.
  • the power supply system 100 includes a power supply section 95, a power line 3, a relay 10 as a switching section, an alternator 96 as a supply device, and a determination section 97 as a determination device.
  • the shutdown control device 70 and the power supply system 100 constitute a shutdown control system 80 .
  • the power supply section 95 has a first power supply section 90 and a second power supply section 93 .
  • the first power supply section 90 and the second power supply section 93 are configured as DC power supplies such as lithium ion batteries and lead-acid batteries.
  • the output voltages of the first power supply section 90 and the second power supply section 93 are, for example, 12V.
  • the power path 3 has a first conductive path 1 and a second conductive path 2.
  • One end of the first conductive path 1 is electrically connected to the high-potential terminal of the first power supply section 90 .
  • a load 92 is electrically connected to one end of the first conducting path 1 in parallel with the first power supply section 90 .
  • the other end of first conductive path 1 is electrically connected to one end of relay 10 .
  • One end of the second conductive path 2 is electrically connected to the high-potential terminal of the second power supply section 93 .
  • a load 94 is electrically connected to one end of the second conductive path 2 in parallel with the second power supply section 93 .
  • the other end of the second conducting path 2 is electrically connected to the other end of the relay 10 .
  • the first conductive path 1 and the second conductive path 2 are paths that transmit power between the first power supply section 90 and the second power supply section 93 . That is, the power supply section 95 has a first power supply section 90 electrically connected to the first conductive path 1 and a second power supply section 93 electrically connected to the second conductive path 2. .
  • electrically connected desirably refers to a configuration in which the objects to be connected are electrically connected to each other (a state in which current can flow) so that the potentials of both objects are equal.
  • electrically connected may be a configuration in which both connection objects are connected in a state in which an electric component is interposed between them and both connection objects are electrically connected.
  • the load 92 has a configuration in which electrical components operate upon receiving power supply from the first power supply section 90 .
  • the load 94 has the same configuration and functions as the load 92 .
  • the power supply system 100 operates the load 94 instead of the load 92 when an abnormality occurs in the load 92, thereby maintaining the function of the load 92 by the load 94 even when the load 92 is abnormal. is configured as
  • the relay 10 is arranged between the first power supply section 90 and the second power supply section 93 .
  • the relay 10 switches to a permissive state in which current is allowed between the first conducting path 1 and the second conducting path 2 when the on signal Son is given, and switches to the first conducting path when the off signal Soff is given. 1 and the second conductive path 2 to cut off the current.
  • the ON signal Son is configured as a high level signal (hereinafter simply referred to as Hi signal) having a predetermined voltage value.
  • the off signal Soff is configured as a low level signal (hereinafter simply referred to as Lo signal) having a voltage value lower than that of the Hi signal.
  • the relay 10 is composed of two switch elements 10A and 10B.
  • the relay 10 is composed of two N-channel MOSFETs (Metal-Oxide-Semiconductor Field Effect Transistors) will be described as a representative example.
  • MOSFETs Metal-Oxide-Semiconductor Field Effect Transistors
  • the sources of these switch elements 10A and 10B are electrically connected via the intermediate conductive path 4.
  • FIG. The drain of the switch element 10A is connected to the end of the first conductive path 1, and the drain of the switch element 10B is connected to the second conductive path 2.
  • the relay 10 can have a configuration in which two MOSFETs are provided in series in a so-called butted state (a state in which the body diodes are arranged in opposite directions).
  • the relay 10 When an ON signal Son is applied to each gate of the switch elements 10A and 10B, the relay 10 (switch elements 10A and 10B) is turned on to allow conduction between the first conductive path 1 and the second conductive path 2. is allowed.
  • the off signal Soff is applied to each gate of the switch elements 10A and 10B, the relay 10 (the switch elements 10A and 10B) is turned off to be in a cutoff state.
  • the relay 10 does not pass current in either direction (that is, the direction toward the first conductive path 1 and the direction toward the second conductive path 2) when in the cutoff state. Electricity to the second conductive path 2 is completely cut off.
  • the alternator 96 is electrically connected to the first conductive path 1 so as to be in parallel with the first power supply section 90 and the load 92 .
  • the alternator 96 supplies power to the first conductive path 1 which is the power path 3 by operating.
  • Alternator 96 functions as a so-called generator.
  • the determination unit 97 is provided in the alternator 96, for example.
  • the determination unit 97 detects the magnitude of the current value output by the alternator 96, and determines whether the alternator 96 is in an abnormal state in which an abnormality has occurred or in a normal state in which no abnormality has occurred based on the detected current value. is configured to be able to determine
  • the determination unit 97 determines that the alternator 96 is in an abnormal state when the magnitude of the current value output by the alternator 96 is greater than or equal to a predetermined current threshold value Th1 (that is, when an abnormality occurs in the alternator 96). In this case, the determination unit 97 outputs an abnormal signal A to the outside (see FIG. 4). Further, the determination unit 97 determines that the alternator 96 is in a normal state when the magnitude of the current value output by the alternator 96 is less than a predetermined current threshold value Th1 (that is, no abnormality has occurred in the alternator 96). do. In this case, the determination unit 97 does not output the abnormal signal A to the outside, but outputs the normal signal N to the outside.
  • a predetermined current threshold value Th1 that is, when an abnormality occurs in the alternator 96.
  • the determination unit 97 of the alternator 96 determines that the alternator 96 is in an abnormal state when an abnormality occurs in the alternator 96 and outputs an abnormality signal A, and outputs a normal signal when an abnormality does not occur in the alternator 96. Output N.
  • the abnormality signal A output from the determination unit 97 is configured as a Hi signal having a voltage value of a predetermined magnitude.
  • the normal signal N output from the determination unit 97 is configured as a Lo signal having a voltage value lower than that of the Hi signal.
  • the interruption control device 70 has a first current detection section 50 , a second current detection section 51 and a drive section 45 .
  • the cut-off control device 70 controls the operation of the relay 10 .
  • the first current detection section 50 is provided on the first conducting path 1 which is the power path 3 located closer to the first power supply section 90 than the relay 10 is.
  • the first current detection unit 50 detects a first current C1 at a predetermined position (a position closer to the first power supply unit 90 than the relay 10) in the first conductive path 1, and controls the detection value according to the first current C1.
  • the control unit 30 can identify the current value flowing through the predetermined position of the first conductive path 1 based on the detection value input from the first current detection unit 50 .
  • the second current detection section 51 is provided on the second conducting path 2 which is the power path 3 located on the second power supply section 93 side of the relay 10 .
  • the second current detection unit 51 detects the second current C2 at a predetermined position (the position closer to the second power supply unit 93 than the relay 10) in the second conducting path 2, and controls the detection value according to the second current C2.
  • the control unit 30 can identify the current value flowing through the predetermined position of the second conductive path 2 based on the detection value input from the second current detection unit 51 .
  • the driving section 45 has a control section 30 , a logic section 40 and an input path 33 .
  • the drive unit 45 has a function of giving the relay 10 an ON signal Son and an OFF signal Soff.
  • the control unit 30 is mainly composed of, for example, a microcomputer, and includes an arithmetic unit such as a CPU (Central Processing Unit), a memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory), an A/D converter, and the like. have.
  • the control unit 30 is configured to receive the first current C1 in the first conductive path 1 and the second current C2 in the second conductive path 2 from the first current detection unit 50 and the second current detection unit 51, respectively. there is The control unit 30 detects an abnormality such as a ground fault occurring in each of the first conducting path 1 and the second conducting path 2 based on the first current C1 and the second current C2.
  • the control unit 30 determines that the power line 3 is in an abnormal state. Further, when the magnitude of the first current C1 input from the first current detection section 50 is less than the predetermined threshold value, the control section 30 determines that the power path 3 is in a normal state.
  • the control unit 30 determines that the power line 3 is in an abnormal state. Further, when the magnitude of the second current C2 input from the second current detection section 51 is less than the predetermined threshold value, the control section 30 determines that the power path 3 is in a normal state.
  • the control unit 30 outputs to the transmission unit 32 a permission signal P that puts the relay 10 in the allowable state and a cutoff signal B1 that puts the relay 10 in the cutoff state. Specifically, control unit 30 outputs permission signal P when determining that power path 3 is in a normal state. When the control unit 30 determines that the power line 3 is in an abnormal state, it outputs a cutoff signal B1.
  • the permission signal P is configured as a Hi signal having a predetermined voltage value.
  • the blocking signal B1 is configured as a Lo signal having a voltage value lower than that of the Hi signal.
  • the logic unit 40 has a forced cutoff unit 31 and a transmission unit 32.
  • the forced cutoff section 31 is configured to output a cutoff signal B2 toward the transmission section 32 when the abnormality signal A is issued from the determination section 97 of the alternator 96 .
  • the blocking signal B2 is configured as a Lo signal having a voltage equivalent to that of the blocking signal B1.
  • the transmission section 32 is electrically connected to the control section 30 via the first transmission line 32A.
  • the transmission unit 32 is electrically connected to the forced cutoff unit 31 via the second transmission line 32B.
  • the permission signal P and the cutoff signal B1 from the control unit 30 and the cutoff signal B2 from the forced cutoff unit 31 are input to the transmission unit 32 .
  • the transmission unit 32 is configured to transmit a signal based on these signals to each gate of the switch elements 10A and 10B of the relay 10 via the third transmission line 32C. That is, the transmission unit 32 transmits a signal to the relay 10 based on the cutoff signal B2 (abnormal signal A) when the abnormal signal A is input.
  • the input path 33 electrically connects the forced cutoff section 31 and the determination section 97 of the alternator 96 .
  • the input path 33 has a function of inputting the abnormal signal A and the normal signal N generated from the determination section 97 to the forced cutoff section 31 of the driving section 45 .
  • the permission signal P and the cutoff signal B1 from the control unit 30 and the abnormality signal A from the determination unit 97 of the alternator 96 are input to the logic unit 40 through the input path 33 (see FIG. 1).
  • the logic unit 40 receives the normal signal N from the determination unit 97 through the input path 33 (Lo signal is input) and the cutoff signal B1 is input (Lo signal is input). , output an off signal Soff.
  • the logic unit 40 outputs the ON signal Son when the normal signal N from the determination unit 97 is input from the input path 33 (Lo signal is input) and the permission signal P is input (Hi signal is input).
  • the logic unit 40 outputs an off signal Soff when the abnormality signal A from the determination unit 97 is input from the input path 33 (Hi signal is input) and the cutoff signal B1 is input (Lo signal is input).
  • the logic unit 40 outputs an off signal Soff when the abnormality signal A from the determination unit 97 is input from the input path 33 (Hi signal is input) and the permission signal P is input (Hi signal is input). In this way, the logic unit 40 gives the ON signal Son and the OFF signal Soff to the relay 10 based on the enable signal P and the cutoff signals B1 and B2.
  • a drive unit 45 having a logic unit 40 that provides an ON signal Son and an OFF signal Soff to the relay 10 turns off the relay 10 when an abnormality signal A is issued from the determination unit 97 and the abnormality signal A is input to the input path 33 . gives the signal Soff. Then, the drive section 45 outputs an ON signal Son in response to the permission signal P when the abnormality signal A is not issued from the determination section 96A, and outputs an OFF signal Soff in response to the cutoff signal B1.
  • the logic unit 40 controls the relay 10 even if either the permission signal P or the cutoff signal B1 is output from the control unit 30. is given an off signal Soff.
  • the logic unit 40 switches the relay 10 when the permission signal P is input from the control unit 30 . is supplied with an on-signal Son, and when a cut-off signal B1 is input from the control section 30, an off-signal Soff is supplied to the relay 10 .
  • the logic unit 40 controls the relay 10 by prioritizing the signal from the determination unit 97 over the signal from the control unit 30 .
  • the start switch eg, ignition switch
  • the determination unit 97 outputs the normal signal N and the control unit 30 outputs the cutoff signal B1.
  • the first current detection unit 50 performs the operation of detecting the first current C ⁇ b>1 on the first power supply unit 90 side of the first conductive path 1 rather than the relay 10 .
  • the first current detection unit 50 detects the first current C1 flowing through a predetermined position (the position closer to the first power supply unit 90 than the relay 10) in the first conducting path 1, and detects the first current C1.
  • a corresponding detection value is given to the control unit 30 . That is, the control unit 30 acquires a detection value corresponding to the first current C1 from the first current detection unit 50.
  • the second current detection section 51 performs an operation of detecting the second current C2 on the second power supply section 93 side of the second conductive path 2 rather than the relay 10. Specifically, the second current detection unit 51 detects the second current C2 flowing in a predetermined position (the position closer to the second power supply unit 93 than the relay 10) in the second conducting path 2, and detects the second current C2. A corresponding detection value is given to the control unit 30 . That is, the control unit 30 acquires a detection value corresponding to the second current C2 from the second current detection unit 51. FIG. If the starting switch is not turned on in step S1 (No in step S1), the process shown in FIG. 3 is terminated.
  • step S4 the control unit 30 performs an operation of detecting an abnormality in the power path 3 based on the first current C1 and the second current C2. Specifically, the controller 30 determines whether either the magnitude of the first current C1 or the magnitude of the second current C2 is equal to or greater than the first threshold. In step S4, the control unit 30 determines that either the magnitude of the first current C1 or the magnitude of the second current C2 is greater than or equal to the first threshold value (Yes in step S4) (that is, the power line 3 is abnormal). state), the process proceeds to step S6.
  • step S6 After moving to step S6, the control unit 30 continues to output the cutoff signal B1 to the transmission unit 32. Then, the process proceeds to step S11.
  • step S11 when the transmission unit 32 receives the cutoff signal B1, it outputs an off signal Soff to the gates of the switch elements 10A and 10B of the relay 10. FIG. As a result, the relay 10 is put into a cut-off state. Then, the processing in FIG. 3 ends.
  • step S4 the control unit 30 determines that the magnitude of the first current C1 and the magnitude of the second current C2 are less than the first threshold value (No in step S4) (that is, the power path 3 is in a normal state). is determined), the process proceeds to step S5.
  • the control unit 30 stops outputting the cutoff signal B1 and outputs the permission signal P to the transmission unit 32 (that is, the logic unit 40).
  • step S7 the transmission section 32 (that is, the logic section 40) that has received the permission signal P outputs the ON signal Son to the gates of the switch elements 10A and 10B. In this way, the relay 10 is brought into the allowable state, and the conduction between the first conductive path 1 and the second conductive path 2 is permitted.
  • step S8 the determination unit 97 determines whether or not the alternator 96 is in an abnormal state. Specifically, the determination unit 97 determines whether the magnitude of the current value output by the alternator 96 is equal to or greater than a predetermined current threshold value Th1.
  • step S8 when the determination unit 97 determines that the magnitude of the current value output by the alternator 96 is equal to or greater than the predetermined current threshold value Th1 (Yes in step S8), the process proceeds to step S9.
  • the determination unit 97 stops outputting the normal signal N and outputs an abnormal signal A indicating that the alternator 96 is in an abnormal state to the forced cutoff unit 31 (that is, the logic unit 40). .
  • step S8 when the determination unit 97 determines that the magnitude of the current value output by the alternator 96 is less than the predetermined current threshold value Th1 (No in step S8), step S8 is executed again. In this case, the determination unit 97 continues to output the normal signal N.
  • step S10 the forced cutoff section 31 that has received the abnormal signal A from the input path 33 outputs the cutoff signal B ⁇ b>2 toward the transmission section 32 .
  • step S11 the transmission section 32 (that is, the logic section 40) that has received the cutoff signal B2 outputs an off signal Soff to the gates of the switch elements 10A and 10B of the relay 10.
  • step S11 the transmission section 32 (that is, the logic section 40) that has received the cutoff signal B2 outputs an off signal Soff to the gates of the switch elements 10A and 10B of the relay 10.
  • FIG. As a result, the relay 10 is put into a cut-off state. Then, the processing in FIG. 3 ends.
  • the control unit 30 determines that the power line 3 is in a normal state (No in step S4), gives the permission signal P to the transmission unit 32 (step S5), and receives the permission signal P. This corresponds to after the unit 32 gives the ON signal Son to the relay 10 (step S7).
  • the determination unit 97 does not output the abnormal signal A, but outputs the normal signal N.
  • the transmission unit 32 outputs an ON signal Son (Hi signal).
  • a ground fault occurs in the load 94.
  • a larger current flows from the second power supply unit 93 to the load 94 than when the power line 3 is in a normal state.
  • the control unit 30 cannot output the cutoff signal B1.
  • the alternator 96 starts operating to start supplying current to the first conductive path 1 in order to prevent the voltage in the power path 3 from dropping.
  • the current supplied from the alternator 96 to the first conducting path 1 flows through the first conducting path 1, the relay 10, and the second conducting path 2 to the load 94 in which the ground fault has occurred.
  • the determination unit 97 determines that the alternator 96 is in an abnormal state (Yes in step S8), stops outputting the normal signal N at time T12, and outputs an abnormal signal A (step S9).
  • the forced cutoff unit 31 outputs the cutoff signal B2 to the transmission unit 32 at time T12 (step S10).
  • the transmission unit 32 When the transmission unit 32 receives the cutoff signal B2, the transmission unit 32 stops outputting the off signal Soff at time T12, and outputs the off signal Soff to the gates of the switch elements 10A and 10B of the relay 10 (step S11). In this way, the relay 10 is put into an interrupted state.
  • the cutoff control device 70 is used in a power supply system 100 having a power supply section 95 , a power line 3 , a relay 10 and a determination section 97 .
  • the power path 3 has a first conductive path 1 and a second conductive path 2, and is a path for transmitting power from the power supply section 95.
  • the relay 10 switches to a permissive state that permits conduction between the first conductive path 1 and the second conductive path 2 when the ON signal Son is given, and switches to the first conductive path when the OFF signal Soff is given. 1 and the second conductive path 2 to cut off the current.
  • the determination unit 97 outputs an abnormality signal A when an abnormality occurs in the alternator 96 that supplies electric power to the power line 3, and outputs a normal signal N when an abnormality does not occur.
  • This shut-off control device 70 has a driving section 45 .
  • the drive unit 45 has a control unit 30 that outputs the permission signal P and the cutoff signal B1, and gives the relay 10 an ON signal Son and an OFF signal Soff.
  • the drive unit 45 provides an off signal Soff to the relay 10 when the abnormality signal A is issued from the determination unit 97, and an on signal Son in response to the permission signal P when the abnormality signal A is not issued from the determination unit 97. , and outputs an off signal Soff according to the cutoff signal B1.
  • the shut-off control device 70 cannot output the shut-off signal B1 from the control unit 30 because the drive unit 45 gives the off signal Soff to the relay 10 when the abnormality signal A is issued from the determination unit 97. , the relay 10 can be switched to the cut-off state.
  • the power supply unit 95 includes a first power supply unit 90 electrically connected to the first conductive path 1 and a second power supply unit 93 electrically connected to the second conductive path 2. have.
  • the disconnection control device 70 can supply power to each of the first conductive path 1 and the second conductive path 2 even when the control unit 30 switches the relay 10 to the disconnected state. can.
  • the drive unit 45 of the cutoff control device 70 has an input path 33 for inputting the abnormality signal A, and gives the off signal Soff to the relay 10 when the abnormality signal A is input to the input path 33 .
  • the relay 10 since the driving section 45 has the input path 33 for inputting the abnormality signal A, the relay 10 is controlled based on the abnormality signal A from various types of determination devices capable of outputting the abnormality signal A. can be given an off signal Soff.
  • the drive unit 45 of the cut-off control device 70 has a logic unit 40 that gives a signal to the relay 10 , and the logic unit 40 receives the permission signal P from the control unit 30 when the abnormal signal A is input from the input path 33 . and the cut-off signal B1, the relay 10 is supplied with the off signal Soff.
  • the logic unit 40 gives the ON signal Son to the relay 10 when the permission signal P is input from the control unit 30, and the cutoff signal B1 is output from the control unit 30.
  • the off signal Soff is given to the relay 10 .
  • the disconnection control device 70 can give the off signal Soff to the relay 10 in a form in which the abnormality signal A is given priority by the logic unit 40 , so that the control unit 97 does not control the control unit 30 . control can be given priority.
  • the shutdown control system 80 has a power supply unit 95 , a power line 3 , a relay 10 , a determination unit 97 , and a shutdown control device 70 .
  • the power path 3 has a first conductive path 1 and a second conductive path 2, and is a path for transmitting power from the power supply section 95.
  • the relay 10 switches to a permissive state that permits conduction between the first conductive path 1 and the second conductive path 2 when the ON signal Son is given, and switches to the first conductive path when the OFF signal Soff is given. 1 and the second conductive path 2 to cut off the current.
  • the determination unit 97 outputs an abnormality signal A when an abnormality occurs in the alternator 96 that supplies electric power to the power line 3, and outputs a normal signal N when an abnormality does not occur.
  • the cut-off control device 70 controls the relay 10 .
  • the cut-off control device 70 has a drive section 45 .
  • the drive unit 45 has a control unit 30 that outputs the permission signal P and the cutoff signal B1, and gives the relay 10 an ON signal Son and an OFF signal Soff.
  • the drive unit 45 provides an off signal Soff to the relay 10 when the abnormality signal A is issued from the determination unit 97, and an on signal Son in response to the permission signal P when the abnormality signal A is not issued from the determination unit 97. , and outputs an off signal Soff according to the cutoff signal B1.
  • the shut-off control system 80 cannot output the shut-off signal B1 from the control unit 30 because the driving unit 45 gives the off signal Soff to the relay 10 when the abnormality signal A is issued from the determination unit 97. , the relay 10 can be switched to the cut-off state.
  • a power supply system 200 provided with a cutoff control device 170 according to Embodiment 2 of the present disclosure will be described with reference to FIG. 5 and the like.
  • a shut-off control device 170 according to the second embodiment differs from the first embodiment in that the control section 130 of the driving section 145 includes a forced shut-off section 131 .
  • the same reference numerals are given to the same configurations as in the first embodiment, and the description of the same structures as in the first embodiment and the same actions and effects as in the first embodiment will be omitted.
  • the shutdown control system 180 is composed of the shutdown control device 170 and the power supply system 200 .
  • Control unit 130 includes forced cutoff unit 131 .
  • the driver 145 has an input path 133 .
  • Control unit 130 is electrically connected to determination unit 97 via input path 133 .
  • the control unit 130 including the forced cutoff unit 131 is configured to receive the abnormal signal A and the normal signal N from the determination unit 97 through an input path 133 .
  • the control unit 130 outputs a cutoff signal B2 to the transmission unit 132 when the abnormal signal A is input. Further, when the control unit 130 determines that the power line 3 is in an abnormal state, the control unit 130 outputs a cutoff signal B1 toward the transmission unit 132 . Further, when determining that the power line 3 is in a normal state, the control unit 130 outputs a permission signal P toward the transmission unit 132 .
  • step S9 the control unit 130 that has received the abnormal signal A outputs the cutoff signal B2 to the transmission unit 132, which is different from the first embodiment. Since the operation in other steps is the same as that of the first embodiment, the explanation is omitted.
  • the control unit 130 of the cutoff control device 170 is configured to receive the normal signal N and the abnormal signal A, and outputs the cutoff signal B2 when the abnormal signal A is input.
  • the shut-off control device 170 allows the control unit 30 to output the shut-off signal B2 when receiving the abnormal signal A from the determination unit 97. Since the cut-off signals B1 and B2 can be collectively output from the above, it is easy to make a simple configuration.
  • a DCDC converter may be used as the supply device.
  • the determination unit may determine whether the alternator is in an abnormal state based on the magnitude of the voltage value output by the alternator. For example, at time T20 in FIG. 6, the control unit determines that the power path is in a normal state, outputs the permission signal P to the transmission unit, and the transmission unit that receives the permission signal P sends the signal to each gate of the switch element. This corresponds to after outputting an on signal. At time T20, the determination unit does not output the abnormal signal A, but outputs the normal signal N. FIG. Then, the transmission unit outputs an ON signal Son (Hi signal).
  • a ground fault occurs in the load on the second conducting path side. Then, first, a current larger than that when the power path is in a normal state flows from the second power supply section toward this load. At this time, if the detection values given to the control unit from the first current detection unit and the second current detection unit are less than the first threshold value, the control unit cannot output the cutoff signal. The alternator then begins to operate and supply current to the first conductive path to prevent the voltage in the power path from dropping. Current supplied from the alternator to the first conductive path flows through the first conductive path, the relay, and the second conductive path to the ground faulted load.
  • the determination unit determines that the alternator is in an abnormal state, stops outputting the normal signal N at time T22, and outputs an abnormal signal A (Hi signal). Then, upon receiving the abnormal signal A, the forced cutoff unit outputs a cutoff signal to the transmission unit at time T22. Upon receiving the cutoff signal, the transmission unit stops outputting the ON signal Son (Hi signal) at time T22 and outputs an OFF signal Soff (Lo signal) to each gate of the switching elements of the relay. Thus, the relay is switched to the cut-off state.
  • the determination unit may determine whether the alternator is in an abnormal state based on the temperature value of the alternator.
  • the determination unit is configured to be able to detect the temperature of the alternator, and when the temperature value of the alternator is equal to or higher than the temperature threshold, it determines that it is in an abnormal state, stops outputting the normal signal (Lo signal), and outputs the abnormal signal.
  • Hi signal A configuration for outputting (Hi signal) is conceivable.
  • a configuration may be used in which a plurality of relays are connected in parallel according to the magnitude of the current flowing through the power path.
  • a plurality of logic units corresponding to each relay may be provided, or a single logic unit may output a signal to each relay.
  • two P-channel MOSFETs may be used for the relay.
  • the logic unit outputs an ON signal configured as a Lo signal having a predetermined voltage, and outputs a Hi signal configured with a voltage higher than the Lo signal as an OFF signal.
  • control unit 30 is mainly composed of a microcomputer in the first embodiment, it may be realized by a plurality of hardware circuits other than the microcomputer. Further, at least one of the failure detection device and the detection section may be provided separately from the control section.
  • Embodiment 1 it is disclosed that the output voltage of the first power supply section 90 and the second power supply section 93 is 12V, but the output voltage of the first power supply section and the second power supply section is not limited to this voltage. Also, the output voltages in the first power supply section and the second power supply section may not be the same.
  • a configuration may be employed in which one power supply section is electrically connected only to either the first conducting path or the second conducting path.
  • this breaking control device and breaking control system operate in the same way as when a ground fault occurs in the load on the second conducting path side.
  • an ECU or the like provided outside the alternator may be used as a determination unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Ce dispositif de commande de blocage (70) est utilisé dans un système d'alimentation électrique (100) ayant une unité d'alimentation électrique (95), un trajet d'énergie électrique (3) pour transmettre de l'énergie électrique à partir de l'unité d'alimentation électrique (95), un relais (10) qui permet une mise sous tension entre un premier trajet conducteur (1) et un second trajet conducteur (2) du trajet d'énergie électrique (3) lorsqu'un signal d'activation (Son) lui est transmis et qui bloque la mise sous tension lorsqu'un signal d'arrêt (Soff) lui est transmis, et une unité d'évaluation (97) qui délivre en sortie un signal d'anomalie (A) lorsqu'une anomalie se produit dans un alternateur (96), le dispositif de commande de blocage (70) comprenant une unité de commande (30) qui délivre en sortie un signal d'autorisation (P) et un signal de blocage (B1) et comportant une unité d'entraînement (45) qui transmet le signal d'activation (Son) et le signal d'arrêt (Soff) au relais (10), l'unité d'entraînement (45) transmettant le signal d'arrêt (Soff) au relais (10) lorsque le signal d'anomalie (A) est délivré en sortie à partir de l'unité d'évaluation (97), et délivrant en sortie le signal d'activation (Son) et le signal d'arrêt (Soff) en fonction du signal d'autorisation (P) et du signal de blocage (B1) lorsqu'aucun signal d'anomalie (A) n'est délivré en sortie par l'unité d'évaluation (97).
PCT/JP2022/020173 2021-05-21 2022-05-13 Dispositif de commande de blocage et système de commande de blocage WO2022244687A1 (fr)

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JP2021085817A JP2022178780A (ja) 2021-05-21 2021-05-21 遮断制御装置、及び遮断制御システム

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004336887A (ja) * 2003-05-07 2004-11-25 Taiheiyo Seiko Kk 回路保護装置
JP2017216790A (ja) * 2016-05-31 2017-12-07 株式会社オートネットワーク技術研究所 リレー装置及び電源装置
JP2018181517A (ja) * 2017-04-07 2018-11-15 矢崎総業株式会社 電流遮断装置およびワイヤハーネス
JP2019195249A (ja) * 2018-04-27 2019-11-07 株式会社豊田自動織機 車両用電源システム
JP2021027701A (ja) * 2019-08-05 2021-02-22 株式会社デンソーテン 電力制御装置および電力制御方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004336887A (ja) * 2003-05-07 2004-11-25 Taiheiyo Seiko Kk 回路保護装置
JP2017216790A (ja) * 2016-05-31 2017-12-07 株式会社オートネットワーク技術研究所 リレー装置及び電源装置
JP2018181517A (ja) * 2017-04-07 2018-11-15 矢崎総業株式会社 電流遮断装置およびワイヤハーネス
JP2019195249A (ja) * 2018-04-27 2019-11-07 株式会社豊田自動織機 車両用電源システム
JP2021027701A (ja) * 2019-08-05 2021-02-22 株式会社デンソーテン 電力制御装置および電力制御方法

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