WO2024024034A1 - 車載用のバックアップ制御装置 - Google Patents

車載用のバックアップ制御装置 Download PDF

Info

Publication number
WO2024024034A1
WO2024024034A1 PCT/JP2022/029128 JP2022029128W WO2024024034A1 WO 2024024034 A1 WO2024024034 A1 WO 2024024034A1 JP 2022029128 W JP2022029128 W JP 2022029128W WO 2024024034 A1 WO2024024034 A1 WO 2024024034A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
storage unit
power storage
supply circuit
load
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/029128
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
剛史 長谷川
一輝 増田
佑樹 佐野
幸義 上野
良介 高橋
達則 森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Toyota Motor Corp
Original Assignee
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Wiring Systems Ltd, AutoNetworks Technologies Ltd, Sumitomo Electric Industries Ltd, Toyota Motor Corp filed Critical Sumitomo Wiring Systems Ltd
Priority to JP2024536688A priority Critical patent/JP7708978B2/ja
Priority to PCT/JP2022/029128 priority patent/WO2024024034A1/ja
Priority to US18/996,382 priority patent/US20260109360A1/en
Priority to CN202280098154.1A priority patent/CN119546489A/zh
Publication of WO2024024034A1 publication Critical patent/WO2024024034A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0225—Failure correction strategy
    • 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
    • B60R16/03—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 for supply of electrical power to vehicle subsystems or for
    • 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
    • B60R16/03—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 for supply of electrical power to vehicle subsystems or for
    • B60R16/033—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 for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for DC mains or DC distribution networks
    • H02J1/08—Three-wire DC power distribution systems; Systems having more than three wires
    • H02J1/084—Three-wire DC power distribution systems; Systems having more than three wires for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
    • H02J1/086—Three-wire DC power distribution systems; Systems having more than three wires for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load or loads and source or sources when the main path fails
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • H02J7/345—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering using capacitors as storage or buffering devices

Definitions

  • the present disclosure relates to an on-vehicle backup control device.
  • Patent Document 1 discloses a power storage device that supplies power from a power storage unit to a load when the voltage of the main power source decreases.
  • the control circuit of this power storage device controls the charging circuit to charge the power storage unit when the main power supply is normal. Then, this control circuit turns on a switch placed between the power storage unit and the load when the main power supply voltage drops (for example, when starting the engine after idling stop ends) to supply power to the load.
  • Patent Document 1 describes that this power storage device can also be applied to a power backup system when a main power supply abnormality occurs.
  • the power storage device of Patent Document 1 is configured to supply power from one power storage unit to a load to be backed up.
  • An object of the present disclosure is to be able to simultaneously use an operation of supplying power from a first power storage unit and an operation of supplying power from a second power storage unit to a common load during a backup operation.
  • An in-vehicle backup control device which is one of the aspects of the present disclosure, includes: It is used in an on-vehicle power supply system that includes a power supply unit and a power storage unit, and when the power supply from the power supply unit to the load is cut off or reduced in a predetermined state, the load is supplied to the load based on the power from the power storage unit.
  • An in-vehicle backup control device that performs a backup operation to supply electric power
  • the power storage unit includes a first power storage unit and a second power storage unit
  • the load includes a predetermined common load, a supply circuit that supplies power from the first power storage unit and the second power storage unit to the common load; a control unit that controls an operation of supplying power from the first power storage unit to the common load and an operation of supplying power from the second power storage unit to the common load in the supply circuit; has.
  • the technology according to the present disclosure can use both the operation of supplying power from the first power storage unit and the operation of supplying power from the second power storage unit to the common load during the backup operation.
  • FIG. 1 is a block diagram schematically illustrating an on-vehicle power supply system including an on-vehicle backup control device according to a first embodiment.
  • FIG. 2 is a flowchart illustrating the flow of control performed by the in-vehicle backup control device of the first embodiment.
  • FIG. 3 is a block diagram schematically illustrating an in-vehicle power supply system including an in-vehicle backup control device according to a second embodiment.
  • FIG. 4 is a block diagram schematically illustrating an on-vehicle power supply system including an on-vehicle backup control device according to a third embodiment.
  • [1] Used in an in-vehicle power supply system comprising a power supply unit and a power storage unit, and based on the power from the power storage unit when the power supply from the power supply unit to the load is cut off or reduced in a predetermined state.
  • An in-vehicle backup control device that performs a backup operation to supply power to the load
  • the power storage unit includes a first power storage unit and a second power storage unit
  • the load includes a predetermined common load, a supply circuit that supplies power from the first power storage unit and the second power storage unit to the common load; a control unit that controls an operation of supplying power from the first power storage unit to the common load and an operation of supplying power from the second power storage unit to the common load in the supply circuit;
  • the in-vehicle backup control device in [1] above can perform a backup operation using the power storage unit in a predetermined state in which the supply of power from the power supply unit is cut off or reduced.
  • power can be supplied from the first power storage unit and the second power storage unit to a predetermined common load. Therefore, during the backup operation, the backup control device can perform both the operation of supplying power from the first power storage unit and the operation of supplying power from the second power storage unit to the common load.
  • the in-vehicle backup control device described in [1] has the following features.
  • the in-vehicle backup control device further includes the first power storage unit and the second power storage unit.
  • the in-vehicle backup control device in [2] above can complete the backup operation within the device by having the first power storage unit and the second power storage unit.
  • the in-vehicle backup control device described in [1] or [2] has the following features.
  • the supply circuit has a first supply circuit and a second supply circuit.
  • the first supply circuit outputs power based on the first power storage unit to the second supply circuit.
  • the second supply circuit switches between a state in which power based on the input from the first supply circuit is supplied to the common load and a state in which power based on the second power storage unit is supplied to the common load.
  • the in-vehicle backup control device in [3] above can switch between a state in which power is supplied from the first power storage unit and a state in which power is supplied from the second power storage unit, and the power supply source is switched from the first power storage unit to the state in which power is supplied from the second power storage unit. and the second power storage unit.
  • the second supply circuit has a function of supplying power from the second power storage unit to the common load, a state in which power is supplied from the first power storage unit, and a state in which power is supplied from the second power storage unit. It has a switching function.
  • the configuration of the in-vehicle backup control device is simplified compared to the case where a configuration having a function of switching between a state in which power is supplied from the first power storage unit and a state in which power is supplied from the second power storage unit is separately provided. be able to.
  • the in-vehicle backup control device described in [3] has the following features.
  • the supply circuit has a first supply circuit and a second supply circuit.
  • the second supply circuit outputs power based on the second power storage unit to the first supply circuit.
  • the first supply circuit switches between a state in which power based on the input from the second supply circuit is supplied to the common load and a state in which power based on the first power storage unit is supplied to the common load.
  • the first supply circuit is also provided with a function of switching between a state in which power is supplied from the first power storage unit and a state in which power is supplied from the second power storage unit. Can be done.
  • the in-vehicle backup control device has the following features.
  • the supply circuit includes a first supply circuit, a second supply circuit, and a switching section.
  • the first supply circuit outputs power based on the first power storage unit.
  • the second supply circuit outputs power based on the second power storage unit.
  • the switching unit switches between a state in which power based on the output from the first supply circuit is supplied to the common load and a state in which power based on the output from the second supply circuit is supplied to the common load.
  • the in-vehicle backup control device in [5] above can switch between a state in which power is supplied from the first power storage unit and a state in which power is supplied from the second power storage unit, and the power supply source is switched from the first power storage unit to the state in which power is supplied from the second power storage unit. and the second power storage unit. Furthermore, by providing the switching section separately from the first supply circuit and the second supply circuit, the configurations of the first supply circuit and the second supply circuit can be simplified.
  • the in-vehicle power supply system 100 shown in FIG. 1 includes a power supply section 90, loads 91, 92, 93, 94, and 95, and an in-vehicle backup control device 1.
  • the vehicle-mounted backup control device 1 is also referred to as a backup control device 1.
  • the power supply unit 90 functions as a main power supply that continuously supplies power when the vehicle equipped with the on-vehicle power supply system 100 is started.
  • the power supply unit 90 is a DC power supply that generates a DC voltage.
  • the power supply section 90 is configured by a battery such as a lead battery, for example.
  • a high potential side terminal of the power supply section 90 is electrically connected to the power path 80, and a low potential side terminal of the power supply section 90 is electrically connected to ground.
  • the power supply section 90 applies a predetermined voltage to the power path 80. Note that in this specification, a voltage is a voltage with respect to ground, unless otherwise specified.
  • the power supply section 90 is electrically connected to loads 91, 92, 93, 94, and 95 via a power path 80. Power from the power supply section 90 is supplied to loads 91, 92, 93, 94, and 95 via the power path 80.
  • the power path 80 includes a power path 81A that is a conductive path directly connected to the power supply section 90, a power path 81B that is connected to the load 91, and a conductive path that is connected to the load 92.
  • the power path 80 is provided with a relay, a fuse, etc. (not shown), and these elements have a function of cutting off conduction of the power path 80.
  • the loads 91, 92, 93, 94, and 95 are on-vehicle electrical devices.
  • the loads 91, 92, 93, 94, and 95 are loads to which power is desired to be supplied when the power supply from the power supply section 90 is in an abnormal state (failure state).
  • the loads 91, 92, 93, 94, and 95 may be actuators such as motors, for example.
  • it may be an ECU or actuator in an electric parking brake system, an ECU or actuator in a shift-by-wire control system, or the like.
  • it may be an in-vehicle electrical device other than these.
  • the load 93 corresponds to an example of a "predetermined common load" of the present disclosure.
  • the load 93 can be supplied with power from the first power storage unit 71 via the first supply circuit 31 described later, and can be supplied with power from the second power storage unit 72 through the second supply circuit 32 described later.
  • the backup control device 1 includes a supply circuit 30, a first control section 41, a second control section 42, a first detection section 51, a second detection section 52, a first power storage section 71, and a second power storage section 72.
  • the supply circuit 30 includes a first supply circuit 31 and a second supply circuit 32.
  • the first control unit 41 and the second control unit 42 correspond to an example of a “control unit” in the present disclosure.
  • the first power storage unit 71 and the second power storage unit 72 correspond to an example of the “power storage unit” of the present disclosure.
  • the backup control device 1 controls the first power storage unit 71 and the second power storage unit when in a predetermined state (abnormal state) in which power supply from the power supply unit 90 to the loads 91, 92, 93, 94, and 95 is cut off or reduced.
  • This device is capable of performing a backup operation of supplying power to loads 91, 92, 93, 94, and 95 based on the power of section 72.
  • the backup control device 1 includes a first power storage unit 101 and a second power storage unit 102.
  • the first power storage unit 101 includes a first power storage section 71, a first control section 41 (described later), a first supply circuit 31, and a first detection section 51.
  • the second power storage unit 102 includes a second power storage section 72, a second control section 42 (described later), a second supply circuit 32, and a second detection section 52.
  • the first power storage unit 71 and the second power storage unit 72 function as auxiliary power sources.
  • the first power storage unit 71 and the second power storage unit 72 are DC power supplies that output DC voltage, and are, for example, electric double layer capacitors.
  • the first power storage unit 71 is electrically connected to a first supply circuit 31 (described later) via a conductive path 15, and is charged and discharged via the first supply circuit 31.
  • the charging voltage (output voltage) of first power storage unit 71 is the voltage applied to conductive path 15 .
  • the high potential side terminal of the first power storage unit 71 is electrically connected to the conductive path 15 and has the same potential as the conductive path 15 .
  • the low potential side terminal of the first power storage unit 71 is electrically connected to the ground and has the same potential as the ground.
  • the second power storage unit 72 is electrically connected to a second supply circuit 32 (described later) via a conductive path 25, and is charged and discharged via the second supply circuit 32.
  • the charging voltage (output voltage) of second power storage unit 72 is the voltage applied to conductive path 25 .
  • the high potential side terminal of second power storage unit 72 is electrically connected to conductive path 25 and has the same potential as conductive path 25 .
  • the low potential side terminal of the second power storage unit 72 is electrically connected to the ground and has the same potential as the ground.
  • the charging voltage (output voltage) of the first power storage unit 71 and the second power storage unit 72 is the standby voltage in a stopped state in which the start switch of the vehicle in which the vehicle-mounted power supply system 100 is installed is in the OFF state. Retained below. Then, the backup control device 1 charges the first power storage unit 71 and the second power storage unit 72 so that the charging voltage is equal to or higher than the target voltage, which is higher than the standby voltage, in response to the start switch of the vehicle being switched to the on state. I do. When the starting switch of the vehicle is in the on state, the charging voltage of the first power storage unit 71 and the second power storage unit 72 is maintained at the target voltage if no failure condition has occurred.
  • the backup control device 1 When the starting switch of the vehicle is switched from the on state to the off state, the backup control device 1 operates the first power storage unit 71 and the second power storage unit 72 until the charging voltage of the first power storage unit 71 and the second power storage unit 72 becomes equal to or lower than the standby voltage. The second power storage unit 72 is discharged.
  • the first supply circuit 31 functions to supply power from the first power storage unit 71 to the loads 91 and 92 and the second supply circuit 32.
  • the second supply circuit 32 functions to supply power to loads 94, 95.
  • the first supply circuit 31 outputs electric power based on the first power storage unit 71 to the second supply circuit 32.
  • the first supply circuit 31 operates under the control of a first control section 41, which will be described later.
  • the first supply circuit 31 is arranged between the conductive path 14 and the conductive paths 11, 12, and 13.
  • the first supply circuit 31 includes, for example, a voltage conversion circuit such as a DC/DC converter.
  • the voltage conversion circuit performs a charging operation and a discharging operation for the first power storage unit 71.
  • As a charging operation the voltage conversion circuit performs a voltage conversion operation of increasing or decreasing the voltage applied to the conductive path 14 and applying the voltage to the conductive path 15.
  • As a discharge operation the voltage conversion circuit performs a voltage conversion operation of boosting or lowering the voltage applied to the conductive path 15 and applying the voltage to the conductive path 11 and the like.
  • the second supply circuit 32 switches between a state of supplying power to the load 93 based on the input from the first supply circuit 31 and a state of supplying power to the load 93 based on the second power storage unit 72.
  • the second supply circuit 32 operates under the control of a second control section 42, which will be described later.
  • the second supply circuit 32 is arranged between the conductive path 24 and the conductive paths 21, 22, and 23.
  • the second supply circuit 32 includes, for example, a voltage conversion circuit such as a DC/DC converter.
  • the voltage conversion circuit performs a charging operation and a discharging operation for the second power storage unit 72.
  • the voltage conversion circuit performs a voltage conversion operation in which the voltage applied to the conductive path 24 is boosted or stepped down and applied to the conductive path 25 as a charging operation.
  • the voltage conversion circuit When supplying power based on the second power storage unit 72 to the load 93, the voltage conversion circuit performs a voltage conversion operation in which the voltage applied to the conductive path 25 is boosted or stepped down and applied to the conductive path 21 etc. as a discharging operation. I do.
  • the first control unit 41 controls the operation of supplying power from the first power storage unit 71 to the load 91, the load 92, and the second supply circuit 32.
  • the first control unit 41 is an information processing device having an information processing function, an arithmetic function, a control function, and the like.
  • the first control unit 41 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), and A/D conversion. It has utensils etc.
  • the first control section 41 has a function of controlling the first supply circuit 31.
  • the second control unit 42 controls the operation of supplying power from the second power storage unit 72 to the loads 93, 94, and 95.
  • the second control unit 42 is an information processing device having an information processing function, an arithmetic function, a control function, and the like.
  • the second control unit 42 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), and A/D conversion. It has utensils etc.
  • the second control section 42 has a function of controlling the second supply circuit 32.
  • the first detection section 51 is configured as, for example, a voltage detection circuit.
  • the first detection unit 51 detects the voltage of the conductive path 14 .
  • the conductive path 14 is electrically connected to the power path 80 and has the same potential as the power path 80 . Therefore, the first detection unit 51 can detect the voltage of the power path 80.
  • the conductive path 11 is a conductive path between the first supply circuit 31 and the load 91.
  • the conductive path 12 is a conductive path between the first supply circuit 31 and the load 92.
  • the conductive path 13 is a conductive path between the first supply circuit 31 and the second supply circuit 32.
  • the second detection section 52 is configured as, for example, a voltage detection circuit.
  • the second detection unit 52 detects the voltage of the conductive path 24.
  • the conductive path 24 is electrically connected to the power path 80 and has the same potential as the power path 80 . Therefore, the second detection unit 52 can detect the voltage of the power path 80.
  • the conductive path 21 is a conductive path between the second supply circuit 32 and the load 93.
  • Conductive path 22 is a conductive path between second supply circuit 32 and load 94 .
  • the conductive path 23 is a conductive path between the second supply circuit 32 and the load 95.
  • FIG. 2 shows an example of backup control performed by the backup control device 1 (specifically, the first control section 41 and the second control section 42).
  • the first control unit 41 and the second control unit 42 start the backup control shown in FIG. 2 when a predetermined start condition is satisfied.
  • the condition for starting the backup control in FIG. 2 may be, for example, that the starting switch of the vehicle in which the in-vehicle power supply system 100 is installed is switched from the off state to the on state, or may be other conditions. .
  • a starting signal indicating that the starting switch has been switched to the ON state is sent to an external device (for example, an external ECU (Electronic Control)). unit)) to the first control section 41 and the second control section 42.
  • the first control unit 41 and the second control unit 42 start the backup control shown in FIG. 2 when receiving such a start signal.
  • the first control unit 41 and the second control unit 42 When starting the backup control of FIG. 2, the first control unit 41 and the second control unit 42 set the charging voltage of the first power storage unit 71 and the second power storage unit 72 to a target voltage or higher, which is higher than the standby voltage, in step S11. Charge as shown. The first control unit 41 and the second control unit 42 maintain the charging voltage of the first power storage unit 71 and the second power storage unit 72 at the target voltage.
  • the first control unit 41 and the second control unit 42 determine whether the output voltage of the power supply unit 90 (main power supply) is decreasing (in a predetermined decreasing state) in step S12.
  • the first control unit 41 determines whether the voltage of the conductive path 14 is less than a threshold value (in a predetermined decreased state) based on the voltage detected by the first detection unit 51, for example.
  • This threshold value is a value significantly smaller than the output voltage applied to the power path 80 when the power supply section 90 is normal, and a value larger than zero.
  • the second control unit 42 may determine whether the voltage of the conductive path 24 is less than a threshold value (in a predetermined decreased state) based on the voltage detected by the second detection unit 52.
  • step S12 determines in step S12 that the voltage of the conductive path 14 is less than the threshold (Yes in step S12)
  • the process proceeds to step S13.
  • the case where the voltage of the conductive path 14 is less than the threshold value that is, the case where the voltage of the power path 80 is less than the threshold value corresponds to an example of the "predetermined state" of the present disclosure.
  • the first control unit 41 determines in step S12 that the voltage of the conductive path 14 is equal to or higher than the threshold value (No in step S12), the first control unit 41 performs the process of step S11 again.
  • the first control unit 41 and the second control unit 42 control the plurality of loads 91, 92, 93, A backup operation is performed to supply power to 94 and 95.
  • the second control unit 42 performs the processes from step S13 onwards for the loads 93, 94, and 95. Note that, below, a description of the backup operation for the loads 91 and 92 by the first control unit 41 will be omitted, and an example in which the second control unit 42 supplies power to the loads 93, 94, and 95 will be described.
  • step S12 If the second control unit 42 determines in step S12 that the voltage of the conductive path 14 is less than the threshold (Yes in step S12), it starts feeding power to the loads 93, 94, and 95 in step S13.
  • the second control unit 42 causes the second supply circuit 32 to perform an operation of supplying power to the conductive paths 21, 22, and 23.
  • the second control unit 42 performs power supply control to the load 93 in the subsequent step S14.
  • the second control unit 42 controls the second supply circuit 32 to supply power to the load 93 based on the input from the first supply circuit 31 and to supply power based on the second power storage unit 72 to the load 93. Switch between states.
  • the second control unit 42 supplies power based on the input from the first supply circuit 31 to the load 93
  • the second control unit 42 controls the voltage applied to the conductive path 13 (voltage of magnitude V1) to the second supply circuit 32.
  • the operation is performed so that the voltage is applied to the conductive path 21.
  • Voltage V1 is a voltage obtained by boosting or stepping down the output voltage from first power storage unit 71 by the voltage conversion circuit of first supply circuit 31.
  • the second control unit 42 controls such that a voltage based on the output voltage of the second power storage unit 72 (a voltage having a magnitude of V2) is applied to the conductive path 21. perform an action.
  • Voltage V2 is a voltage obtained by boosting or stepping down the output voltage from second power storage unit 72 by the voltage conversion circuit of second supply circuit 32.
  • the voltage V1 and the voltage V2 may have the same magnitude (slightly different values).
  • the first control unit 41 and the second control unit 42 determine whether the vehicle in which the on-vehicle power supply system 100 is mounted is in a stopped state.
  • the first control unit 41 and the second control unit 42 determine whether the starting switch of the vehicle in which the in-vehicle power supply system 100 is mounted has been switched from the on state to the off state. For example, when the starting switch of a vehicle changes from the on state to the off state, a starting signal indicating that the starting switch has been switched to the off state is sent from an external device (for example, an external ECU (Electronic Control Unit)) to the first control unit. 41 and the second control section 42.
  • an external device for example, an external ECU (Electronic Control Unit)
  • the first control section 41 and the second control section 42 determine that the vehicle is in a stopped state.
  • the first control unit 41 and the second control unit 42 determine in step S15 that the vehicle is not in a stopped state (in a starting state) (No in step S15)
  • the first control unit 41 and the second control unit 42 determine that the vehicle is in a stopped state in step S15 (Yes in step S15)
  • the backup control device 1 can perform a backup operation using the first power storage unit 71 and the second power storage unit 72 in a predetermined state where the supply of power from the power supply unit 90 is cut off or reduced. In this backup control device 1, power can be supplied to the load 93 from the first power storage unit 71 and the second power storage unit 72. Therefore, backup control device 1 can perform both the operation of supplying power from first power storage unit 71 and the operation of supplying power from second power storage unit 72 to load 93 during the backup operation.
  • the backup control device 1 includes a first power storage unit 71 and a second power storage unit 72. Therefore, the backup control device 1 can complete the backup operation within the device by having the first power storage unit 71 and the second power storage unit 72.
  • the backup control device 1 can switch between a state in which power is supplied from the first power storage unit 71 and a state in which power is supplied from the second power storage unit 72, and the power supply source is switched between the first power storage unit 71 and the second power storage unit 72.
  • the power storage unit 72 can be selected from among the two power storage units 72.
  • the second supply circuit 32 has a function of supplying power from the second power storage unit 72 to the load 93, a state in which power is supplied from the first power storage unit 71, and a state in which power is supplied from the second power storage unit 72. It has a function to switch between the state and the state.
  • the configuration of the backup control device 1 is simplified compared to the case where a configuration having a function of switching between a state in which power is supplied from the first power storage unit 71 and a state in which power is supplied from the second power storage unit 72 is separately provided. be able to.
  • the in-vehicle power supply system 200 of the second embodiment differs from the first embodiment in that it includes a switching unit 33 and switches the power supplied to the load 93 by the switching unit 33, but is common in other respects. Note that the same components as in the first embodiment are given the same reference numerals, and detailed explanations will be omitted.
  • the in-vehicle power supply system 200 includes an in-vehicle backup control device 1 (also referred to as backup control device 1).
  • the supply circuit 230 of the backup control device 1 includes a first supply circuit 31 , a second supply circuit 32 , and a switching section 233 .
  • the first supply circuit 31 functions to supply power to the switching unit 233.
  • the first supply circuit 31 outputs electric power based on the first power storage unit 71 to the switching unit 233 via the conductive path 213.
  • the conductive path 213 is a conductive path between the first supply circuit 31 and the switching section 233.
  • the second supply circuit 32 functions to supply power to the switching unit 233.
  • Second supply circuit 32 outputs electric power based on second power storage unit 72 to switching unit 233 via conductive path 221 .
  • the conductive path 221 is a conductive path between the second supply circuit 32 and the switching section 233.
  • the conductive path 234 is a conductive path between the switching unit 233 and the load 93.
  • the switching unit 233 switches between a state in which power is supplied to the load 93 based on the output from the first supply circuit 31 and a state in which power is supplied to the load 93 based on the output from the second supply circuit 32.
  • the switching unit 233 includes, for example, a switch.
  • the switching unit 233 operates under the control of the first control unit 41 and the second control unit 42, for example.
  • the backup control performed by the backup control device 1 (specifically, the first control unit 41 and the second control unit 42) of the second embodiment differs from the first embodiment only in step S14.
  • the first control unit 41 and the second control unit 42 perform power supply control to the load 93 in step S14.
  • the first control unit 41 and the second control unit 42 control the switching unit 233 to determine a state in which power is supplied to the load 93 based on the input from the first supply circuit 31 and a state in which power is supplied to the load 93 based on the input from the second power storage unit 72. 93.
  • the switching unit 233 operates so that the voltage applied to the conductive path 213 (voltage of magnitude V21) is applied to the conductive path 234. have them do it.
  • Voltage V21 is a voltage obtained by boosting or stepping down the output voltage from first power storage unit 71 by the voltage conversion circuit of first supply circuit 31.
  • the first control unit 41 and the second control unit 42 control that the voltage based on the output voltage of the second power storage unit 72 (voltage of magnitude V22) is applied to the conductive path.
  • Voltage V22 is a voltage obtained by boosting or stepping down the output voltage from second power storage unit 72 by the voltage conversion circuit of second supply circuit 32.
  • the voltage V21 and the voltage V22 may have the same magnitude (slightly different values).
  • the supply circuit 230 includes a first supply circuit 31, a second supply circuit 32, and a switching section 233.
  • the switching unit 233 switches between a state in which power based on the output from the first supply circuit 31 is supplied to the load 93 and a state in which power based on the output from the second supply circuit 32 is supplied to the load 93. Therefore, the backup control device 1 can switch between a state in which power is supplied from the first power storage unit 71 and a state in which power is supplied from the second power storage unit 72, and the power supply source can be switched between the first power storage unit 71 and the second power storage unit 72. It can be selected from among the second power storage units 72. Furthermore, by providing the switching unit 233 separately from the first supply circuit 31 and the second supply circuit 32, the configurations of the first supply circuit 31 and the second supply circuit 32 can be simplified.
  • the in-vehicle power supply system 300 of the third embodiment differs from the first embodiment in that the first power storage unit 101 has a function of switching the power source for the load 93, and is the same in other respects. Note that the same components as in the first embodiment are given the same reference numerals, and detailed explanations will be omitted.
  • the in-vehicle power supply system 300 has a conductive path 16, as shown in FIG.
  • the conductive path 16 is a conductive path between the first supply circuit 31 and the load 93.
  • the first supply circuit 31 switches between a state in which power is supplied to the load 93 based on the input from the second supply circuit 32 and a state in which power is supplied to the load 93 based on the first power storage unit 71.
  • the backup control by the backup control device 1 of the third embodiment is mainly the same as that of the first embodiment (see FIG. 2), and the control explained below is different.
  • the first supply circuit 31 has a function of switching the power source (the first power storage unit 71 and the second power storage unit 72).
  • step S14 of backup control the first supply circuit 31 performs power source switching control.
  • the second control unit 42 causes the second supply circuit 32 to be in a state of supplying power to the load 93 based on the input from the second supply circuit 32 and supplying power to the load 93 based on the first power storage unit 71. Switch between states.
  • the first control unit 41 controls the voltage applied to the conductive path 13 (voltage of magnitude V2) to the first supply circuit 31. The operation is performed so that the voltage is applied to the conductive path 16.
  • Voltage V2 is a voltage obtained by boosting or stepping down the output voltage from second power storage unit 72 by the voltage conversion circuit of second supply circuit 32.
  • the first control unit 41 controls such that a voltage based on the output voltage of the first power storage unit 71 (a voltage having a magnitude of V1) is applied to the conductive path 16. perform an action.
  • Voltage V1 is a voltage obtained by boosting or stepping down the output voltage from first power storage unit 71 by the voltage conversion circuit of first supply circuit 31.
  • the voltage V1 and the voltage V2 may have the same magnitude (slightly different values).
  • the first supply circuit 31 can be provided with a function of switching between a state in which power is supplied from the first power storage unit 71 and a state in which power is supplied from the second power storage unit 72. .
  • the predetermined state in step S12 is exemplified as a state in which the voltage of the conductive path 14 is less than the threshold value, but other states may be used.
  • the predetermined state is a state in which there is a request for backup operation from the load (specifically, a state in which at least one of the first control unit 41 and the second control unit 42 has received a signal requesting backup operation from the load). It may be.
  • the loads 91, 92, 93, 94, and 95 were configured to be able to be supplied with power from the power supply section 90 via the power paths 81B, 81C, 81D, 81E, and 81F, respectively.
  • the configuration may be such that the power paths 81B, 81C, 81D, 81E, and 81F are not provided.
  • normal power when power supply unit 90 is normal is supplied to loads 91, 92, 93, 94, and 95 by the direct backup power source (first power storage unit 71 and second power storage unit 72).
  • the first power storage unit 101 and the second power storage unit supply power to the common load (load 93) by backup operation, regardless of whether there is a power supply path to the common load (load 93). is possible.
  • the first power storage unit 101 and the second power storage unit can independently supply power to the common load (load 93) by backup operation even without input from the other unit. It is.
  • a conductive path connecting the second supply circuit 32 and the load 93 is provided, and in addition to the first supply circuit 31, the second supply circuit 32 is also connected to the power source (the first power storage unit 71 and the second power storage unit 71). It may also be configured to have a function of switching the power storage unit 72).
  • the starting switch may be an ignition switch.
  • the starting switch may be a power switch for controlling the EV system.
  • the power supply unit is a lead battery, but is not limited to a lead battery.
  • the power supply unit may be, for example, another type of battery such as a lithium ion battery, or may be a power supply such as an alternator or a converter.
  • the power storage unit is an electric double layer capacitor, but the power storage unit is not limited to an electric double layer capacitor.
  • the power storage unit may be another type of power storage unit such as a lithium ion capacitor or a lithium ion battery.
  • the backup control device performs the backup operation when the power supply from the power supply unit is interrupted, but the backup control device supplies power from the power storage unit in a predetermined state where the power supply is not completely interrupted.
  • a backup operation may be performed to perform the following.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Human Computer Interaction (AREA)
  • Transportation (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Stand-By Power Supply Arrangements (AREA)
PCT/JP2022/029128 2022-07-28 2022-07-28 車載用のバックアップ制御装置 Ceased WO2024024034A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2024536688A JP7708978B2 (ja) 2022-07-28 2022-07-28 車載用のバックアップ制御装置
PCT/JP2022/029128 WO2024024034A1 (ja) 2022-07-28 2022-07-28 車載用のバックアップ制御装置
US18/996,382 US20260109360A1 (en) 2022-07-28 2022-07-28 Onboard backup control device
CN202280098154.1A CN119546489A (zh) 2022-07-28 2022-07-28 车载用的备用控制装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/029128 WO2024024034A1 (ja) 2022-07-28 2022-07-28 車載用のバックアップ制御装置

Publications (1)

Publication Number Publication Date
WO2024024034A1 true WO2024024034A1 (ja) 2024-02-01

Family

ID=89705770

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/029128 Ceased WO2024024034A1 (ja) 2022-07-28 2022-07-28 車載用のバックアップ制御装置

Country Status (4)

Country Link
US (1) US20260109360A1 (https=)
JP (1) JP7708978B2 (https=)
CN (1) CN119546489A (https=)
WO (1) WO2024024034A1 (https=)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016181179A (ja) * 2015-03-24 2016-10-13 日本電気株式会社 電源切替装置、電源システム、電源切替方法、及び電源切替プログラム
JP2018191440A (ja) * 2017-05-08 2018-11-29 株式会社オートネットワーク技術研究所 車両用電源制御装置、車両用電源装置、及び車両用電源制御装置の制御回路
US20200021120A1 (en) * 2017-03-21 2020-01-16 HELLA GmbH & Co. KGaA Two-voltage battery
WO2021060220A1 (ja) * 2019-09-27 2021-04-01 パナソニックＩｐマネジメント株式会社 バックアップ電源システム、電源バックアップ方法及びプログラム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016181179A (ja) * 2015-03-24 2016-10-13 日本電気株式会社 電源切替装置、電源システム、電源切替方法、及び電源切替プログラム
US20200021120A1 (en) * 2017-03-21 2020-01-16 HELLA GmbH & Co. KGaA Two-voltage battery
JP2018191440A (ja) * 2017-05-08 2018-11-29 株式会社オートネットワーク技術研究所 車両用電源制御装置、車両用電源装置、及び車両用電源制御装置の制御回路
WO2021060220A1 (ja) * 2019-09-27 2021-04-01 パナソニックＩｐマネジメント株式会社 バックアップ電源システム、電源バックアップ方法及びプログラム

Also Published As

Publication number Publication date
JPWO2024024034A1 (https=) 2024-02-01
JP7708978B2 (ja) 2025-07-15
CN119546489A (zh) 2025-02-28
US20260109360A1 (en) 2026-04-23

Similar Documents

Publication Publication Date Title
CN109792160B (zh) 车载用的备用装置
JP2022084124A (ja) 車載用のバックアップ制御装置及び車載用のバックアップ装置
CN110365098B (zh) 供电装置
JP6969505B2 (ja) 車載用の電源制御装置および車載用電源システム
JP2022093883A (ja) 車載用のバックアップ制御装置及び車載用のバックアップ装置
CN115051423A (zh) 充放电控制装置
CN116345659A (zh) 电源控制设备和控制方法
JP7677253B2 (ja) 電源制御装置、制御方法、及び制御プログラム
US11588346B2 (en) Power supply control device and power supply control method
JP7107159B2 (ja) 車両用バックアップ電源装置
CN115133642A (zh) 电源设备和确定方法
JP4124729B2 (ja) 短時間使用可能なエネルギーを形成することによって搭載電源回路網を安定化する方法
JP7708978B2 (ja) 車載用のバックアップ制御装置
JP7021661B2 (ja) 電源装置の制御装置
US11299115B2 (en) Power storage unit control device
JP7819312B2 (ja) 車載用のバックアップ制御装置
JP7788079B2 (ja) 車載用のバックアップ制御装置
JP7769894B2 (ja) 車載用のバックアップ制御装置
JP7809260B2 (ja) 車両用バックアップ装置
JP7234907B2 (ja) 車載用電源制御装置、及び車載用電源装置
JP2025002214A (ja) 電源システム
JP2025169526A (ja) 電源制御装置および電源制御プログラム
WO2024024093A1 (ja) 車載用制御装置

Legal Events

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

Ref document number: 22952152

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2024536688

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 202280098154.1

Country of ref document: CN

WWP Wipo information: published in national office

Ref document number: 202280098154.1

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22952152

Country of ref document: EP

Kind code of ref document: A1