WO2018016091A1 - Vehicle power supply apparatus, vehicle power supply system, and method for controlling vehicle power supply apparatus - Google Patents

Vehicle power supply apparatus, vehicle power supply system, and method for controlling vehicle power supply apparatus Download PDF

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Publication number
WO2018016091A1
WO2018016091A1 PCT/JP2016/076719 JP2016076719W WO2018016091A1 WO 2018016091 A1 WO2018016091 A1 WO 2018016091A1 JP 2016076719 W JP2016076719 W JP 2016076719W WO 2018016091 A1 WO2018016091 A1 WO 2018016091A1
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WO
WIPO (PCT)
Prior art keywords
power supply
terminal
battery
switch
ground terminal
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PCT/JP2016/076719
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French (fr)
Japanese (ja)
Inventor
一由希 目黒
光宏 木村
和徳 本木
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新電元工業株式会社
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Application filed by 新電元工業株式会社 filed Critical 新電元工業株式会社
Priority to JP2017545763A priority Critical patent/JP6396604B2/en
Publication of WO2018016091A1 publication Critical patent/WO2018016091A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to a vehicle power supply device, a vehicle power supply system, and a control method for the vehicle power supply device.
  • Patent Document 1 a vehicle power supply system is known that includes two batteries having different voltages as a power source.
  • lithium ion batteries are used for assisting internal combustion engines, while lead batteries are used for starting internal combustion engines and driving lights and ECUs (Engine Control Units).
  • the lithium ion battery is charged by supplying a generated voltage from an AC generator (ACG) via the ECU, and the lead battery is charged with a voltage stepped down by a DC-DC converter.
  • ACG AC generator
  • the ECU detects the voltage of the Li battery, and executes control to stop the engine when the lithium ion battery does not output a predetermined voltage due to a failure or the like.
  • the conventional vehicle power supply system has a problem that the drive of the AC generator (ACG) and the load cannot be continued when the lithium ion battery fails.
  • a vehicle power supply device a vehicle power supply system, and a control method for the vehicle power supply device that can continue to drive an AC generator and a load when a battery fails.
  • the purpose is to provide.
  • a vehicle power supply device includes: A first battery that can be charged by outputting a first power supply voltage between a first power supply terminal and a first ground terminal, and a second power supply voltage higher than the first power supply voltage A load connected between the first power terminal and the first ground terminal by controlling the power of the second battery that can be output and charged between the power terminal and the second ground terminal And the second power supply voltage output from the second battery is stepped down and supplied between the first power supply terminal and the first ground terminal.
  • a power supply device Based on the state of the second battery, it is turned on to conduct between the first power supply terminal and the third power supply terminal and between the first ground terminal and the third ground terminal.
  • a first switch that cuts off between the first power supply terminal and the third power supply terminal and cuts off between the first ground terminal and the third ground terminal by conducting and turning off. And turning on to conduct between the second power supply terminal and the third power supply terminal, and conducting between the second ground terminal and the third ground terminal, and turning off. To turn on / off the second switch that shuts off the second power terminal and the third power terminal and shuts off the second ground terminal and the third ground terminal.
  • Control and supply between the third power supply terminal and the third ground terminal A control unit that drives the alternator with a voltage to be controlled and controls the operation of the alternator,
  • the controller is If the state of the second battery is normal, turn on the second switch and turn off the first switch; On the other hand, when the state of the second battery is abnormal, the second switch is turned off and the first switch is turned on.
  • the controller is If the state of the second battery is normal, With the second switch turned on and the first switch turned off, a DC voltage obtained by rectifying the AC voltage generated by the AC generator is applied to the third power supply terminal and the third ground terminal. By supplying the second battery, the second battery is charged, and the down regulator steps down the DC voltage and outputs the stepped-down voltage between the first power supply terminal and the first ground terminal. The first battery is charged and the step-down voltage is supplied to the load.
  • the controller is If the state of the second battery is abnormal, With the second switch turned off and the first switch turned on, a DC voltage obtained by rectifying the AC voltage generated by the AC generator is applied to the third power supply terminal and the third ground terminal.
  • the first battery is charged with the DC voltage and supplied with the DC voltage to the load.
  • the controller is If the state of the second battery is normal, The AC generator is driven based on the second power supply voltage output from the second battery by turning on the second switch and turning off the first switch.
  • the controller is If the state of the second battery is abnormal, The AC generator is driven based on the first power supply voltage output from the first battery by turning off the second switch and turning on the first switch.
  • the first battery is a lead battery
  • the second battery is a lithium ion battery.
  • the vehicle power supply device includes: The AC generator is mounted on a hybrid motorcycle, the AC generator is connected to an internal combustion engine of the hybrid motorcycle, and the control unit starts the internal combustion engine by driving the AC generator and / or the internal combustion engine. It is characterized by driving.
  • the first power supply voltage is 14V
  • the second power supply voltage is 50V.
  • the first and second switches are mechanical switches.
  • a communication unit that transmits information on the state of the second battery to the control unit;
  • the controller is Whether the state of the second battery is normal or abnormal is determined based on the information.
  • a first fuse is connected between the first power supply terminal and a positive electrode of the first battery.
  • a second fuse is connected between the first power supply terminal and the load.
  • the load is any one of an ignition coil for controlling ignition of the internal combustion engine, a fuel pump for supplying fuel to the internal combustion engine, or an injector for injecting fuel supplied by the internal combustion engine.
  • a vehicle power supply system includes: A first battery that outputs and charges a first power supply voltage between a first power supply terminal and a first ground terminal; A second battery that outputs a second power supply voltage higher than the first power supply voltage between a second power supply terminal and a second ground terminal, and is rechargeable; A down regulator that steps down the second power supply voltage output from the second battery and outputs the second power supply voltage between the first power supply terminal and the first ground terminal; By turning on, the first power supply terminal and the third power supply terminal are brought into conduction, and between the first ground terminal and the third grounding terminal, and by turning off, the first power supply terminal and the third power supply terminal are conducted.
  • An alternator The on / off of the first switch and the second switch is controlled based on the state of the second battery, and is supplied between the third power supply terminal and the third ground terminal.
  • a controller that drives the alternator with voltage and controls the operation of the alternator The controller is If the state of the second battery is normal, turn on the second switch and turn off the first switch; On the other hand, when the state of the second battery is abnormal, the second switch is turned off and the first switch is turned on.
  • a control method for a vehicle power supply device includes: A first battery that can be charged by outputting a first power supply voltage between a first power supply terminal and a first ground terminal, and a second power supply voltage higher than the first power supply voltage A load connected between the first power terminal and the first ground terminal by controlling the power of the second battery that can be output and charged between the power terminal and the second ground terminal And the second power supply voltage output from the second battery is stepped down and supplied between the first power supply terminal and the first ground terminal.
  • a supply device that is turned on based on the state of the second battery to establish conduction between the first power supply terminal and the third power supply terminal, and the first ground terminal and the third ground Between the first power supply terminal and the third power supply terminal by conducting between the terminals and turning off. And a first switch that shuts off between the first ground terminal and the third ground terminal, and between the second power terminal and the third power terminal when turned on. And conducting between the second ground terminal and the third ground terminal and turning off, thereby blocking between the second power terminal and the third power terminal and the second power terminal.
  • the second switch that cuts off between the second ground terminal and the third ground terminal is controlled to be turned on / off and supplied between the third power supply terminal and the third ground terminal.
  • a vehicle drive device control method comprising a controller that controls the operation of the alternator by driving the alternator with a voltage,
  • the control unit turns on the second switch and turns off the first switch,
  • the control unit turns off the second switch and turns on the first switch.
  • a vehicular power supply system outputs a first power supply voltage between a first power supply terminal and a first ground terminal, and is capable of being charged.
  • a second power supply voltage higher than the power supply voltage is output between the second power supply terminal and the second ground terminal, the second battery that can be charged, and the second power supply voltage output from the second battery.
  • a down regulator that outputs the voltage between the first power supply terminal and the first ground terminal, and turns on to make the first power supply terminal and the third power supply terminal conductive, and the first regulator Conducting between the ground terminal and the third ground terminal, and turning off, blocks the first power terminal and the third power terminal, and connects the first ground terminal and the third ground terminal.
  • a first switch that cuts off the gap between the second power supply terminal and the third power supply terminal when turned on. And conducting between the second grounding terminal and the third grounding terminal and turning off, thereby blocking between the second powering terminal and the third powering terminal and the second grounding terminal.
  • a second switch that cuts off between the third ground terminal, a load connected between the first power supply terminal and the first ground terminal, an AC generator, and a second battery. Based on this, the on / off of the first switch and the second switch is controlled, and the alternating current generator is driven by the voltage supplied between the third power supply terminal and the third ground terminal.
  • the control unit turns on the second switch and turns off the first switch when the state of the second battery is normal, while the state of the second battery is abnormal. Turns off the second switch and turns on the first switch.
  • the control unit rectifies the AC voltage generated by the AC generator with the second switch off and the first switch on.
  • the first battery is charged with the DC voltage and the DC voltage is supplied to the load.
  • the vehicle power supply system can continue to drive the AC generator and the load when the battery fails.
  • the control unit can be driven by the electric power of the first battery (lead battery).
  • the control unit bypasses the down regulator in a circuit to charge / discharge the lead battery.
  • the hybrid motorcycle can continue running with the power of the lead battery.
  • FIG. 1 is a diagram illustrating a vehicle power supply system according to the present embodiment.
  • FIG. 2 is a diagram illustrating an example of an operation flow of the vehicle power supply system illustrated in FIG. 1.
  • FIG. 1 is a diagram showing a vehicle power supply system according to the present embodiment.
  • the vehicle power supply system 100 includes, for example, as shown in FIG. 1, a first battery (lead (Pb) battery) B1 and a second battery (lithium ion (Li) battery) B2.
  • Down regulator (DC-DC converter) DR first switch SW1, second switch SW2, load LOAD, AC generator ACG, first fuse H1, second fuse H2,
  • a control unit (vehicle power supply device) ECU and an internal combustion engine (engine) E are provided.
  • the vehicle power supply system 100 is mounted on, for example, a hybrid motorcycle.
  • the vehicle power supply system 100 controls charging / discharging of the first and second batteries B1 and B2 mounted on a vehicle (not shown) such as a two-wheeled vehicle using an AC voltage generated by the AC generator ACG.
  • the load LOAD is controlled.
  • the AC generator ACG is connected to the internal combustion engine E of the hybrid motorcycle. As described later, the control unit ECU drives and / or drives the internal combustion engine E by driving the AC generator ACG.
  • the AC generator ACG can function, for example, as an alternator driven by the internal combustion engine E of the hybrid motorcycle.
  • the AC generator ACG generates and outputs an AC voltage for charging the first and second batteries B1 and B2 and driving the load LOAD.
  • control unit ECU converts the AC voltage generated by the AC generator ACG into a DC voltage using a bridge circuit (not shown), and converts the DC voltage into the first and second switches.
  • the first and second batteries B1 and B2 are supplied via SW1 and SW2.
  • the AC generator ACG can also function as a motor for driving the internal combustion engine E of the hybrid motorcycle.
  • the AC generator ACG is connected to the internal combustion engine E of the hybrid motorcycle, and the control unit ECU drives the AC generator ACG with the electric power output from the first or second battery B1 or B2.
  • the internal combustion engine E is started and / or the internal combustion engine E is driven (rotation is assisted).
  • the first battery B1 outputs a first power supply voltage between the first power supply terminal TV1 and the first ground terminal TG1, and can be charged.
  • the positive electrode of the first battery B1 is connected to the first power supply terminal TV1, and the negative electrode of the first battery B1 is connected to the first ground terminal TG1.
  • the first battery B1 is, for example, a lead battery, and the first power supply voltage is, for example, 14V.
  • the electric power of the first battery B1 is used for starting the internal combustion engine E, driving the light and the control unit ECU when there is no abnormality in the second battery B2.
  • the second battery B2 outputs a second power supply voltage higher than the first power supply voltage between the second power supply terminal TV2 and the second ground terminal TG2, and can be charged.
  • the positive electrode of the second battery B2 is connected to the second power supply terminal TV2, and the negative electrode of the second battery B2 is connected to the second ground terminal TG2.
  • the second ground terminal TG2 is connected to the ground.
  • the second battery B2 is, for example, a lithium ion battery, and has a second power supply voltage (for example, 50V) higher than the first power supply voltage (for example, 14V) output from the lead battery. Is output.
  • a second power supply voltage for example, 50V
  • the first power supply voltage for example, 14V
  • the second battery B2 includes a communication unit X that transmits information related to the state of the second battery B2 to the control unit ECU.
  • the down regulator DR steps down the second power supply voltage output by the second battery B2 between the power supply terminal TV2A and the ground terminal TG2A, and reduces the first power supply terminal TV1 and the first ground terminal TG1.
  • It is a DC-DC converter that outputs in between.
  • the power terminal TV2A is electrically connected to the second power terminal TV2
  • the ground terminal TG2A is electrically connected to the second ground terminal TG2.
  • the first switch SW1 is turned on to conduct between the first power supply terminal TV1 and the third power supply terminal TV3 and between the first ground terminal TG1 and the third ground terminal TG3. Is to be conducted.
  • the first switch SW1 is turned off to cut off between the first power supply terminal TV1 and the third power supply terminal TV3, and between the first ground terminal TG1 and the third ground terminal TG3. It is designed to block the gap.
  • the first switch SW1 is, for example, a mechanical switch.
  • the second switch SW2 is turned on to conduct between the second power supply terminal TV2 and the third power supply terminal TV3 and between the second ground terminal TG2 and the third ground terminal TG3. Is to be conducted.
  • the second switch SW2 is, for example, a mechanical switch.
  • the load LOAD is connected between the first power supply terminal TV2 and the first ground terminal TG1. That is, the high potential side terminal of the load LOAD is connected to the first power supply terminal TV1, and the low potential side terminal of the load LOAD is connected to the first ground terminal TG1.
  • the load LOAD is driven by a voltage supplied between the first power supply terminal TV1 and the first ground terminal TG1.
  • the load LOAD is, for example, an internal combustion engine such as an ignition coil for controlling the ignition of the internal combustion engine E, a fuel pump for supplying fuel to the internal combustion engine E, or an injector for injecting fuel supplied by the internal combustion engine E. This mechanism is necessary for starting (driving) E.
  • the first fuse H1 is connected between the first power supply terminal TV1 and the positive electrode of the first battery B1.
  • the first fuse H1 is blown when a current exceeding a first predetermined value set in advance flows between the first power supply terminal TV1 and the positive electrode of the first battery B1. It has become.
  • the first fuse H1 can prevent, for example, the first battery B1 from being charged with a current equal to or higher than the first specified value.
  • the second fuse H2 is connected between the first power supply terminal TV1 and the load LOAD (terminal on the high potential side of the load LOAD).
  • the second fuse H2 can prevent, for example, the load LOAD from being applied with a current equal to or greater than the second specified value and destroying the load LOAD.
  • control unit ECU controls, for example, the first and second switches SW1, SW2, the down regulator DR, the load LOAD, the AC generator ACG, and the internal combustion engine E.
  • control part ECU controls the electric power of 1st battery B1 and 2nd battery B2, and supplies it to load LOAD.
  • the control unit ECU operates with the electric power of the first battery (lead battery) B1.
  • the control unit ECU controls on / off of the first switch SW1 and the second switch SW2 based on the state of the second battery B2, and the third power supply terminal TV3 and the third ground terminal TG3.
  • the AC generator ACG is driven by the voltage supplied between the two and the operation of the AC generator ACG is controlled.
  • control unit ECU determines whether the state of the second battery B2 is normal or abnormal based on the information regarding the state of the second battery B2 output from the communication unit X of the second battery B2. It has become.
  • the case where the state of the second battery (lithium ion battery) B2 is abnormal is, for example, the case where the cell voltage and current of the lithium ion battery are outside the specified voltage / current range normally used for charging and discharging.
  • the lithium ion battery's SOC State Of Charge
  • the lithium ion battery cell temperature is outside the specified temperature range normally used for charging / discharging, or other failure This is a case where the lithium ion battery does not output a predetermined voltage.
  • control unit ECU can detect a failure (open failure, short failure) of the first and second switches SW1 and SW2.
  • control unit ECU turns on the second switch SW2 and turns off the first switch SW1.
  • the control unit ECU when driving the load LOAD, when the state of the second battery B2 is normal, the control unit ECU turns on the second switch SW2 and turns off the first switch SW1. In this state, a DC voltage obtained by rectifying the AC voltage generated by the AC generator ACG is supplied between the third power supply terminal TV3 and the third ground terminal TG3.
  • the second battery B2 is charged, and the first battery is reduced by the step-down voltage output by the down regulator DR between the first power supply terminal TV1 and the first ground terminal TG1 after stepping down the DC voltage.
  • B1 is charged and the step-down voltage is supplied to the load LOAD.
  • the control unit ECU turns on the second switch SW2 and turns off the first switch SW1 when the state of the second battery B2 is normal.
  • the AC generator ACG is driven based on the second power supply voltage output from the second battery B2.
  • control unit ECU turns off the second switch SW2 and turns on the first switch SW1.
  • the control unit ECU when driving the load LOAD, when the state of the second battery B2 is abnormal, the control unit ECU turns off the second switch SW2 and turns on the first switch SW1. In this state, a DC voltage obtained by rectifying the AC voltage generated by the AC generator ACG is supplied between the third power supply terminal TV3 and the third ground terminal TG3. Thus, the first battery B1 is charged with the DC voltage and the DC voltage is supplied to the load LOAD.
  • the control unit ECU turns off the second switch SW2 and turns on the first switch SW1.
  • the AC generator ACG is driven based on the first power supply voltage output from the first battery B1.
  • control unit ECU turns off the second switch SW2 and turns on the first switch SW1 regardless of the state of the second battery B2.
  • Battery The AC generator ACG is driven by the voltage output from B1, and the internal combustion engine E is started.
  • FIG. 2 is a diagram illustrating an example of an operation flow of the vehicle power supply system illustrated in FIG. 1.
  • the control unit ECU determines whether the state of the second battery B2 is normal or abnormal based on the information regarding the state of the second battery B2 output from the communication unit X of the second battery B2. To do. That is, the control unit ECU detects a failure of the second battery B2 based on the information regarding the state of the second battery B2 output from the communication unit X of the second battery B2 (step S1).
  • control unit ECU determines that there is an abnormality (failure) in the second battery B2 in step S1, it detects a failure (open failure, short failure) in the first and second switches SW1 and SW2. (Determine) (Step S2).
  • step S3 When the control unit ECU determines in step S2 that the first and second switches SW1 and SW2 have no failure, when the second battery (lithium ion battery) B2 is being charged, the control unit ECU The power generation for stopping the control and charging the second battery B2 is stopped (step S3).
  • step S2 when it is determined in step S2 that the first and second switches SW1 and SW2 have no failure, the second battery B2 is output when the internal combustion engine E is driven (the AC generator ACG is driven). The driving of the AC generator ACG with the electric power to be stopped is stopped, and the driving of the internal combustion engine E is stopped (step S3).
  • control unit ECU determines that the state of the second battery B2 is abnormal, it turns off the second switch SW2 (step S4).
  • control unit ECU turns on the first switch SW1 (step S5).
  • control unit ECU turns off the second switch SW2 and turns on the first switch SW1.
  • the control unit ECU when driving the load LOAD, when the state of the second battery B2 is abnormal, the control unit ECU turns off the second switch SW2 and turns off the first switch SW1. In the ON state, a DC voltage obtained by rectifying the AC voltage generated by the AC generator ACG is supplied between the third power supply terminal TV3 and the third ground terminal TG3. Thus, the first battery B1 is charged with the DC voltage and the DC voltage is supplied to the load LOAD.
  • the control unit ECU turns off the second switch SW2 and the first switch if the state of the second battery B2 is abnormal.
  • the switch SW1 By turning on the switch SW1, the AC generator ACG is driven based on the first power supply voltage output from the first battery B1.
  • the vehicle power supply system 100 continues to drive the AC generator ACG (rotation assist of the internal combustion engine E) and drive the load LOAD. be able to.
  • the control unit ECU can be driven by the power of the first battery (lead battery) B1.
  • the control unit ECU can bypass the down regulator DR in a circuit to charge / discharge the lead battery.
  • the hybrid motorcycle can continue to run with the power of the lead battery.
  • the control unit ECU determines the second battery B2 based on the information on the state of the second battery B2 output from the communication unit X of the second battery B2. When it is detected that the state has returned to normal, for example, a failure (open failure, short failure) of the first and second switches SW1 and SW2 is detected (determined). When determining that the first and second switches SW1 and SW2 have no failure, the control device ECU turns off the first switch SW1 and then turns on the second switch SW2.
  • the second battery (lithium ion battery) B2 is charged by the power generation of the AC generator ACG, or the AC generator ACG is driven by the electric power output from the second battery B2, thereby driving the internal combustion engine E. It will be possible to return to a possible state.
  • the vehicle power supply system outputs the first power supply voltage between the first power supply terminal TV1 and the first ground terminal TG1 and can be charged.
  • Battery B1 a second power supply voltage higher than the first power supply voltage is output between the second power supply terminal TV2 and the second ground terminal TG2, and the second battery B2 that can be charged,
  • the second power supply voltage output from the second battery B2 is stepped down and output between the first power supply terminal TV1 and the first ground terminal TG1, and the first power supply terminal TV1 is turned on by turning it on.
  • the third power supply terminal TV3 and the first ground terminal TG1 and the third ground terminal TG3 are turned on and turned off to turn off the first power supply terminal TV1 and the third power supply terminal TV3.
  • the first grounding terminal is disconnected from the TV 3
  • the first switch SW1 that cuts off between the G1 and the third ground terminal TG3, and the second switch 3 is turned on to make the second power terminal TV2 and the third power terminal TV3 conductive and the second ground terminal.
  • the TG2 and the third ground terminal TG3 are conducted and turned off to shut off the second power terminal and the third power terminal TV3, and the second ground terminal and the third ground terminal TG3.
  • the state of the second switch SW2 that cuts off the power supply, the load LOAD connected between the first power supply terminal TV1 and the first ground terminal TG1, the AC generator ACG, and the second battery B2 The first switch SW1 and the second switch SW2 are controlled to be turned on / off based on the voltage of the AC generator ACG by the voltage supplied between the third power supply terminal TV3 and the third ground terminal TG3. Drive and AC power generation And a control unit ECU which controls the operation of the ACG, the.
  • the control unit turns on the second switch SW2 and turns off the first switch SW1, while the state of the second battery B2 is abnormal. In the case, the second switch SW2 is turned off and the first switch SW1 is turned on.
  • the control unit turns off the second switch SW2 and turns on the first switch SW1.
  • the first battery B1 is charged by the DC voltage and the DC voltage is supplied to the load LOAD. .
  • the vehicle power supply system can continue to drive the AC generator ACG and the load LOAD when the battery fails.
  • the control unit can be driven by the power of the first battery B1 (lead battery). It is possible to execute switching such as assistance so that the hybrid motorcycle can continue running. Further, the control unit bypasses the down regulator DR in a circuit manner to charge and discharge the lead battery.
  • the hybrid motorcycle can continue running with the power of the lead battery.

Abstract

This vehicle power supply system is provided with a control unit that controls turning on/off of a first switch and a second switch on the basis of the state of a second battery, and controls the operation of an AC generator by driving the AC generator by a voltage supplied between a third power supply terminal and a third ground terminal. This control unit turns the second switch on and the first switch off when the state of the second battery is normal, and turns the second switch off and the first switch on when the state of the second battery is abnormal.

Description

車両用電力供給装置、車両用電力供給システム、および、車両用電力供給装置の制御方法VEHICLE POWER SUPPLY DEVICE, VEHICLE POWER SUPPLY SYSTEM, AND CONTROL METHOD FOR VEHICLE POWER SUPPLY DEVICE
　本発明は、車両用電力供給装置、車両用電力供給システム、および、車両用電力供給装置の制御方法に関する。 The present invention relates to a vehicle power supply device, a vehicle power supply system, and a control method for the vehicle power supply device.
　従来、車両用の電力供給システムには、電源として電圧が異なる２つのバッテリを備えたものが知られている（特許文献１）。 2. Description of the Related Art Conventionally, a vehicle power supply system is known that includes two batteries having different voltages as a power source (Patent Document 1).
　例えば、リチウムイオンバッテリは、内燃機関のアシストに用いられ、一方、鉛バッテリは、内燃機関の始動、ライトやＥＣＵ（Engine Control Unit）の駆動のために用いられる。そして、リチウムイオンバッテリは、交流発電機（ＡＣＧ）から、ＥＣＵを介して、発電電圧が供給されて充電され、鉛バッテリは、ＤＣ－ＤＣコンバータで降圧した電圧で充電される。 For example, lithium ion batteries are used for assisting internal combustion engines, while lead batteries are used for starting internal combustion engines and driving lights and ECUs (Engine Control Units). The lithium ion battery is charged by supplying a generated voltage from an AC generator (ACG) via the ECU, and the lead battery is charged with a voltage stepped down by a DC-DC converter.
　ここで、例えば、ＥＣＵは、Ｌｉバッテリの電圧を検出して、リチウムイオンバッテリが故障等により、所定の電圧を出力しない場合、エンジンを停止する制御を実行する。 Here, for example, the ECU detects the voltage of the Li battery, and executes control to stop the engine when the lithium ion battery does not output a predetermined voltage due to a failure or the like.
　このため、リチウムイオンバッテリが故障等により、所定の電圧を出力しない場合、交流発電機（ＡＣＧ）や負荷の駆動を継続することができず、ハイブリッド二輪車が走行を継続できないこととなる。 For this reason, when the lithium ion battery does not output a predetermined voltage due to a failure or the like, the drive of the AC generator (ACG) or the load cannot be continued, and the hybrid motorcycle cannot continue running.
　このように、従来の車両用の電力供給システムでは、リチウムイオンバッテリが故障した場合に、交流発電機（ＡＣＧ）や負荷の駆動を継続することができない問題があった。 As described above, the conventional vehicle power supply system has a problem that the drive of the AC generator (ACG) and the load cannot be continued when the lithium ion battery fails.
特表２０１４－５０６９７０号公報Special table 2014-506970 gazette
　 そこで、本発明では、バッテリが故障した場合に、交流発電機や負荷の駆動を継続することが可能な車両用電力供給装置、車両用電力供給システム、および、車両用電力供給装置の制御方法を提供することを目的とする。 Therefore, in the present invention, there is provided a vehicle power supply device, a vehicle power supply system, and a control method for the vehicle power supply device that can continue to drive an AC generator and a load when a battery fails. The purpose is to provide.
　本発明の一態様に係る実施形態に従った車両用電力供給装置は、
　第１の電源端子と第１の接地端子との間に第１の電源電圧を出力し充電可能な第１のバッテリ、及び、前記第１の電源電圧よりも高い第２の電源電圧を第２の電源端子と第２の接地端子との間に出力し充電可能な第２のバッテリの電力を制御して、前記第１の電源端子と前記第１の接地端子との間に接続された負荷に供給し、前記第２のバッテリが出力する前記第２の電源電圧が降圧されて前記第１の電源端子と前記第１の接地端子との間に供給されるようになっている、車両用電力供給装置であって、
　前記第２のバッテリの状態に基づいて、オンすることにより前記第１の電源端子と第３の電源端子との間を導通させ且つ前記第１の接地端子と第３の接地端子との間を導通し、オフすることにより前記第１の電源端子と前記第３の電源端子との間を遮断させ且つ前記第１の接地端子と前記第３の接地端子との間を遮断する第１のスイッチ、及び、オンすることにより前記第２の電源端子と前記第３の電源端子との間を導通させ且つ前記第２の接地端子と前記第３の接地端子との間を導通し、オフすることにより前記第２の電源端子と前記第３の電源端子との間を遮断させ且つ前記第２の接地端子と前記第３の接地端子との間を遮断する第２のスイッチの、オン/オフを制御するとともに、前記第３の電源端子と前記第３の接地端子との間に供給される電圧により交流発電機を駆動させ、前記交流発電機の動作を制御する制御部を備え、
　前記制御部は、
　前記第２のバッテリの状態が正常である場合には、前記第２のスイッチをオンし且つ前記第１のスイッチをオフし、
　一方、前記第２のバッテリの状態が異常である場合には、前記第２のスイッチをオフし且つ前記第１のスイッチをオンする
　ことを特徴とする。 A vehicle power supply device according to an embodiment of one aspect of the present invention includes:
A first battery that can be charged by outputting a first power supply voltage between a first power supply terminal and a first ground terminal, and a second power supply voltage higher than the first power supply voltage A load connected between the first power terminal and the first ground terminal by controlling the power of the second battery that can be output and charged between the power terminal and the second ground terminal And the second power supply voltage output from the second battery is stepped down and supplied between the first power supply terminal and the first ground terminal. A power supply device,
Based on the state of the second battery, it is turned on to conduct between the first power supply terminal and the third power supply terminal and between the first ground terminal and the third ground terminal. A first switch that cuts off between the first power supply terminal and the third power supply terminal and cuts off between the first ground terminal and the third ground terminal by conducting and turning off. And turning on to conduct between the second power supply terminal and the third power supply terminal, and conducting between the second ground terminal and the third ground terminal, and turning off. To turn on / off the second switch that shuts off the second power terminal and the third power terminal and shuts off the second ground terminal and the third ground terminal. Control and supply between the third power supply terminal and the third ground terminal A control unit that drives the alternator with a voltage to be controlled and controls the operation of the alternator,
The controller is
If the state of the second battery is normal, turn on the second switch and turn off the first switch;
On the other hand, when the state of the second battery is abnormal, the second switch is turned off and the first switch is turned on.
　前記車両用電力供給装置において、
　前記制御部は、
　前記第２のバッテリの状態が正常である場合には、
　前記第２のスイッチをオンし且つ前記第１のスイッチをオフした状態で、前記交流発電機が発電した交流電圧を整流した直流電圧を前記第３の電源端子と前記第３の接地端子との間に供給することで、前記第２のバッテリを充電するとともに、前記ダウンレギュレータが前記直流電圧を降圧して前記第１の電源端子と前記第１の接地端子との間に出力した降圧電圧により前記第１のバッテリを充電し且つ前記降圧電圧を前記負荷に供給する
　ことを特徴とする。 In the vehicle power supply device,
The controller is
If the state of the second battery is normal,
With the second switch turned on and the first switch turned off, a DC voltage obtained by rectifying the AC voltage generated by the AC generator is applied to the third power supply terminal and the third ground terminal. By supplying the second battery, the second battery is charged, and the down regulator steps down the DC voltage and outputs the stepped-down voltage between the first power supply terminal and the first ground terminal. The first battery is charged and the step-down voltage is supplied to the load.
　前記車両用電力供給装置において、
　前記制御部は、
　前記第２のバッテリの状態が異常である場合には、
　前記第２のスイッチをオフし且つ前記第１のスイッチをオンした状態で、前記交流発電機が発電した交流電圧を整流した直流電圧を前記第３の電源端子と前記第３の接地端子との間に供給することで、前記直流電圧により前記第１のバッテリを充電し且つ前記直流電圧を前記負荷に供給する
　ことを特徴とする。 In the vehicle power supply device,
The controller is
If the state of the second battery is abnormal,
With the second switch turned off and the first switch turned on, a DC voltage obtained by rectifying the AC voltage generated by the AC generator is applied to the third power supply terminal and the third ground terminal. The first battery is charged with the DC voltage and supplied with the DC voltage to the load.
　前記車両用電力供給装置において、
　前記制御部は、
　前記第２のバッテリの状態が正常である場合には、
　前記第２のスイッチをオンし且つ前記第１のスイッチをオフすることで、前記第２のバッテリが出力する前記第２の電源電圧に基づいて前記交流発電機を駆動させる
　ことを特徴とする。 In the vehicle power supply device,
The controller is
If the state of the second battery is normal,
The AC generator is driven based on the second power supply voltage output from the second battery by turning on the second switch and turning off the first switch.
　前記車両用電力供給装置において、
　前記制御部は、
　前記第２のバッテリの状態が異常である場合には、
　前記第２のスイッチをオフし且つ前記第１のスイッチをオンすることで、前記第１のバッテリが出力する前記第１の電源電圧に基づいて前記交流発電機を駆動させる
　ことを特徴とする。 In the vehicle power supply device,
The controller is
If the state of the second battery is abnormal,
The AC generator is driven based on the first power supply voltage output from the first battery by turning off the second switch and turning on the first switch.
　前記車両用電力供給装置において、
　前記第１のバッテリは、鉛バッテリであり、前記第２のバッテリは、リチウムイオンバッテリである
　ことを特徴とする。 In the vehicle power supply device,
The first battery is a lead battery, and the second battery is a lithium ion battery.
　前記車両用電力供給装置において、
　前記車両用電力供給装置は、
　ハイブリッド二輪車に積載され、前記交流発電機は前記ハイブリッド二輪車の内燃機関に接続され、前記制御部は、前記交流発電機を駆動することにより、前記内燃機関を起動し、及び／又は、前記内燃機関を駆動する
　ことを特徴とする。 In the vehicle power supply device,
The vehicle power supply device includes:
The AC generator is mounted on a hybrid motorcycle, the AC generator is connected to an internal combustion engine of the hybrid motorcycle, and the control unit starts the internal combustion engine by driving the AC generator and / or the internal combustion engine. It is characterized by driving.
　前記車両用電力供給装置において、
　前記第１の電源電圧は、１４Ｖであり、前記第２の電源電圧は、５０Ｖであることを特徴とする。 In the vehicle power supply device,
The first power supply voltage is 14V, and the second power supply voltage is 50V.
　前記車両用電力供給装置において、
　前記第１及び第２のスイッチは、機械式の開閉器であることを特徴とする。 In the vehicle power supply device,
The first and second switches are mechanical switches.
　前記車両用電力供給装置において、
　前記第２のバッテリの状態に関する情報を前記制御部に送信する通信部をさらに備え、
　前記制御部は、
　前記情報に基づいて、前記第２のバッテリの状態が正常又は異常であるかを判断することを特徴とする。 In the vehicle power supply device,
A communication unit that transmits information on the state of the second battery to the control unit;
The controller is
Whether the state of the second battery is normal or abnormal is determined based on the information.
　前記車両用電力供給装置において、
　前記第１の電源端子と前記第１のバッテリの正極との間に第１のヒューズが接続されている
　ことを特徴とする。 In the vehicle power supply device,
A first fuse is connected between the first power supply terminal and a positive electrode of the first battery.
　前記車両用電力供給装置において、
　前記第１の電源端子と前記負荷との間に第２のヒューズが接続されていることを特徴とする。 In the vehicle power supply device,
A second fuse is connected between the first power supply terminal and the load.
　前記車両用電力供給装置において、
　前記負荷は、前記内燃機関の点火を制御するためのイグニッションコイル、前記内燃機関に燃料を供給するためのフュエルポンプ、又は、前記内燃機関の供給する燃料を噴射するインジェクタの何れかである
　ことを特徴とする。 In the vehicle power supply device,
The load is any one of an ignition coil for controlling ignition of the internal combustion engine, a fuel pump for supplying fuel to the internal combustion engine, or an injector for injecting fuel supplied by the internal combustion engine. Features.
　本発明の一態様に係る実施形態に従った車両用電力供給システムは、
　第１の電源端子と第１の接地端子との間に第１の電源電圧を出力し、充電可能な第１のバッテリと、
　前記第１の電源電圧よりも高い第２の電源電圧を第２の電源端子と第２の接地端子との間に出力し、充電可能な第２のバッテリと、
　前記第２のバッテリが出力する前記第２の電源電圧を降圧して前記第１の電源端子と前記第１の接地端子との間に出力するダウンレギュレータと、
　オンすることにより前記第１の電源端子と第３の電源端子との間を導通させ且つ前記第１の接地端子と第３の接地端子との間を導通し、オフすることにより前記第１の電源端子と前記第３の電源端子との間を遮断させ且つ前記第１の接地端子と前記第３の接地端子との間を遮断する第１のスイッチと、
　オンすることにより前記第２の電源端子と前記第３の電源端子との間を導通させ且つ前記第２の接地端子と前記第３の接地端子との間を導通し、オフすることにより前記第２の電源端子と前記第３の電源端子との間を遮断させ且つ前記第２の接地端子と前記第３の接地端子との間を遮断する第２のスイッチと、　
　前記第１の電源端子と前記第１の接地端子との間に接続された負荷と、
　交流発電機と、
　前記第２のバッテリの状態に基づいて前記第１のスイッチ及び前記第２のスイッチのオン/オフを制御するとともに、前記第３の電源端子と前記第３の接地端子との間に供給される電圧により前記交流発電機を駆動させ、前記交流発電機の動作を制御する制御部と、を備え、
　前記制御部は、
　前記第２のバッテリの状態が正常である場合には、前記第２のスイッチをオンし且つ前記第１のスイッチをオフし、
　一方、前記第２のバッテリの状態が異常である場合には、前記第２のスイッチをオフし且つ前記第１のスイッチをオンする
　ことを特徴とする。 A vehicle power supply system according to an embodiment of one aspect of the present invention includes:
A first battery that outputs and charges a first power supply voltage between a first power supply terminal and a first ground terminal;
A second battery that outputs a second power supply voltage higher than the first power supply voltage between a second power supply terminal and a second ground terminal, and is rechargeable;
A down regulator that steps down the second power supply voltage output from the second battery and outputs the second power supply voltage between the first power supply terminal and the first ground terminal;
By turning on, the first power supply terminal and the third power supply terminal are brought into conduction, and between the first ground terminal and the third grounding terminal, and by turning off, the first power supply terminal and the third power supply terminal are conducted. A first switch that shuts off between the power terminal and the third power terminal and shuts off between the first ground terminal and the third ground terminal;
By turning on, the second power supply terminal and the third power supply terminal are brought into conduction, and between the second ground terminal and the third ground terminal, and by turning off, the second power supply terminal and the third power supply terminal are conducted. A second switch that cuts off between the second power terminal and the third power terminal and cuts off between the second ground terminal and the third ground terminal;
A load connected between the first power supply terminal and the first ground terminal;
An alternator,
The on / off of the first switch and the second switch is controlled based on the state of the second battery, and is supplied between the third power supply terminal and the third ground terminal. A controller that drives the alternator with voltage and controls the operation of the alternator,
The controller is
If the state of the second battery is normal, turn on the second switch and turn off the first switch;
On the other hand, when the state of the second battery is abnormal, the second switch is turned off and the first switch is turned on.
　本発明の一態様に係る実施形態に従った車両用電力供給装置の制御方法は、
　第１の電源端子と第１の接地端子との間に第１の電源電圧を出力し充電可能な第１のバッテリ、及び、前記第１の電源電圧よりも高い第２の電源電圧を第２の電源端子と第２の接地端子との間に出力し充電可能な第２のバッテリの電力を制御して、前記第１の電源端子と前記第１の接地端子との間に接続された負荷に供給し、前記第２のバッテリが出力する前記第２の電源電圧が降圧されて前記第１の電源端子と前記第１の接地端子との間に供給されるようになっている車両用電力供給装置あって、前記第２のバッテリの状態に基づいて、オンすることにより前記第１の電源端子と第３の電源端子との間を導通させ且つ前記第１の接地端子と第３の接地端子との間を導通し、オフすることにより前記第１の電源端子と前記第３の電源端子との間を遮断させ且つ前記第１の接地端子と前記第３の接地端子との間を遮断する第１のスイッチ、及び、オンすることにより前記第２の電源端子と前記第３の電源端子との間を導通させ且つ前記第２の接地端子と前記第３の接地端子との間を導通し、オフすることにより前記第２の電源端子と前記第３の電源端子との間を遮断させ且つ前記第２の接地端子と前記第３の接地端子との間を遮断する第２のスイッチの、オン/オフを制御するとともに、前記第３の電源端子と前記第３の接地端子との間に供給される電圧により交流発電機を駆動させ、前記交流発電機の動作を制御する制御部を備えた車両用駆動装置の制御方法であって、
　前記第２のバッテリの状態が正常である場合には、前記制御部により、前記第２のスイッチをオンし且つ前記第１のスイッチをオフし、
　一方、前記第２のバッテリの状態が異常である場合には、前記制御部により、前記第２のスイッチをオフし且つ前記第１のスイッチをオンする
　ことを特徴とする。 A control method for a vehicle power supply device according to an embodiment of one aspect of the present invention includes:
A first battery that can be charged by outputting a first power supply voltage between a first power supply terminal and a first ground terminal, and a second power supply voltage higher than the first power supply voltage A load connected between the first power terminal and the first ground terminal by controlling the power of the second battery that can be output and charged between the power terminal and the second ground terminal And the second power supply voltage output from the second battery is stepped down and supplied between the first power supply terminal and the first ground terminal. A supply device that is turned on based on the state of the second battery to establish conduction between the first power supply terminal and the third power supply terminal, and the first ground terminal and the third ground Between the first power supply terminal and the third power supply terminal by conducting between the terminals and turning off. And a first switch that shuts off between the first ground terminal and the third ground terminal, and between the second power terminal and the third power terminal when turned on. And conducting between the second ground terminal and the third ground terminal and turning off, thereby blocking between the second power terminal and the third power terminal and the second power terminal. The second switch that cuts off between the second ground terminal and the third ground terminal is controlled to be turned on / off and supplied between the third power supply terminal and the third ground terminal. A vehicle drive device control method comprising a controller that controls the operation of the alternator by driving the alternator with a voltage,
When the state of the second battery is normal, the control unit turns on the second switch and turns off the first switch,
On the other hand, when the state of the second battery is abnormal, the control unit turns off the second switch and turns on the first switch.
　本発明の一態様に係る車両用電力供給システムは、第１の電源端子と第１の接地端子との間に第１の電源電圧を出力し、充電可能な第１のバッテリと、第１の電源電圧よりも高い第２の電源電圧を第２の電源端子と第２の接地端子との間に出力し、充電可能な第２のバッテリと、第２のバッテリが出力する第２の電源電圧を降圧して第１の電源端子と第１の接地端子との間に出力するダウンレギュレータと、オンすることにより第１の電源端子と第３の電源端子との間を導通させ且つ第１の接地端子と第３の接地端子との間を導通し、オフすることにより第１の電源端子と第３の電源端子との間を遮断させ且つ第１の接地端子と第３の接地端子との間を遮断する第１のスイッチと、オンすることにより第２の電源端子と第３の電源端子との間を導通させ且つ第２の接地端子と第３の接地端子との間を導通し、オフすることにより第２の電源端子と第３の電源端子との間を遮断させ且つ第２の接地端子と第３の接地端子との間を遮断する第２のスイッチと、第１の電源端子と第１の接地端子との間に接続された負荷と、交流発電機と、第２のバッテリの状態に基づいて第１のスイッチ及び第２のスイッチのオン/オフを制御するとともに、第３の電源端子と第３の接地端子との間に供給される電圧により交流発電機を駆動させ、交流発電機の動作を制御する制御部と、を備える。 A vehicular power supply system according to one aspect of the present invention outputs a first power supply voltage between a first power supply terminal and a first ground terminal, and is capable of being charged. A second power supply voltage higher than the power supply voltage is output between the second power supply terminal and the second ground terminal, the second battery that can be charged, and the second power supply voltage output from the second battery. And a down regulator that outputs the voltage between the first power supply terminal and the first ground terminal, and turns on to make the first power supply terminal and the third power supply terminal conductive, and the first regulator Conducting between the ground terminal and the third ground terminal, and turning off, blocks the first power terminal and the third power terminal, and connects the first ground terminal and the third ground terminal. A first switch that cuts off the gap between the second power supply terminal and the third power supply terminal when turned on. And conducting between the second grounding terminal and the third grounding terminal and turning off, thereby blocking between the second powering terminal and the third powering terminal and the second grounding terminal. A second switch that cuts off between the third ground terminal, a load connected between the first power supply terminal and the first ground terminal, an AC generator, and a second battery. Based on this, the on / off of the first switch and the second switch is controlled, and the alternating current generator is driven by the voltage supplied between the third power supply terminal and the third ground terminal. A control unit for controlling the operation of
　そして、制御部は、第２のバッテリの状態が正常である場合には、第２のスイッチをオンし且つ第１のスイッチをオフし、一方、第２のバッテリの状態が異常である場合には、第２のスイッチをオフし且つ第１のスイッチをオンする。 The control unit turns on the second switch and turns off the first switch when the state of the second battery is normal, while the state of the second battery is abnormal. Turns off the second switch and turns on the first switch.
　これにより、制御部は、第２のバッテリの状態が異常である場合には、第２のスイッチをオフし且つ第１のスイッチをオンした状態で、交流発電機が発電した交流電圧を整流した直流電圧を第３の電源端子と第３の接地端子との間に供給することで、当該直流電圧により第１のバッテリを充電し且つ直流電圧を前記負荷に供給する。 As a result, when the state of the second battery is abnormal, the control unit rectifies the AC voltage generated by the AC generator with the second switch off and the first switch on. By supplying a DC voltage between the third power supply terminal and the third ground terminal, the first battery is charged with the DC voltage and the DC voltage is supplied to the load.
　これにより、本発明の一態様に係る車両用電力供給システムは、バッテリが故障した場合に、交流発電機や負荷の駆動を継続することができる。 Thus, the vehicle power supply system according to one aspect of the present invention can continue to drive the AC generator and the load when the battery fails.
　特に、制御部は、リチウムイオンバッテリが故障等により、所定の電圧を出力しない場合、制御部は第１のバッテリ（鉛バッテリ）の電力で駆動できるので、当該鉛バッテリの電力で、エンジンのアシスト等、ハイブリッド二輪車が走行を継続するための切換を実行することできる。さらに、制御部は、ダウンレギュレータを回路的に迂回して、鉛バッテリを充放電させるようにする。 In particular, when the lithium ion battery does not output a predetermined voltage due to a failure or the like, the control unit can be driven by the electric power of the first battery (lead battery). Thus, it is possible to execute switching for the hybrid motorcycle to continue traveling. Further, the control unit bypasses the down regulator in a circuit to charge / discharge the lead battery.
　すなわち、リチウムイオンバッテリが故障等により、所定の電圧を出力しない場合に、鉛バッテリの電力で、ハイブリッド二輪車が走行を継続させることができる。 That is, when the lithium ion battery does not output a predetermined voltage due to a failure or the like, the hybrid motorcycle can continue running with the power of the lead battery.
図１は、本実施形態に係る車両用電力供給システムを示す図である。FIG. 1 is a diagram illustrating a vehicle power supply system according to the present embodiment. 図２は、図１に示す車両用電力供給システムの動作フローの一例を示す図である。FIG. 2 is a diagram illustrating an example of an operation flow of the vehicle power supply system illustrated in FIG. 1.
 以下、本発明に係る実施形態について図面に基づいて説明する。 Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
第１の実施形態First embodiment
　図１は、本実施形態に係る車両用電力供給システムを示す図である。 FIG. 1 is a diagram showing a vehicle power supply system according to the present embodiment.
　本実施形態に係る車両用電力供給システム１００は、例えば、図１に示すように、第１のバッテリ（鉛（Ｐｂ）バッテリ）Ｂ１と、第２のバッテリ（リチウムイオン（Ｌｉ）バッテリ）Ｂ２と、ダウンレギュレータ（ＤＣ－ＤＣコンバータ）ＤＲと、第１のスイッチＳＷ１と、第２のスイッチＳＷ２と、負荷ＬＯＡＤと、交流発電機ＡＣＧと、第１のヒューズＨ１と、第２のヒューズＨ２と、制御部（車両用電力供給装置）ＥＣＵと、内燃機関（エンジン）Ｅと、を備える。 The vehicle power supply system 100 according to the present embodiment includes, for example, as shown in FIG. 1, a first battery (lead (Pb) battery) B1 and a second battery (lithium ion (Li) battery) B2. Down regulator (DC-DC converter) DR, first switch SW1, second switch SW2, load LOAD, AC generator ACG, first fuse H1, second fuse H2, A control unit (vehicle power supply device) ECU and an internal combustion engine (engine) E are provided.
　この車両用電力供給システム１００は、例えば、ハイブリッド二輪車に積載されるようになっている。 The vehicle power supply system 100 is mounted on, for example, a hybrid motorcycle.
　この車両用電力供給システム１００は、交流発電機ＡＣＧで発電した交流電圧を用いて、二輪車等の車両（図示せず）に積載される第１、第２のバッテリＢ１、Ｂ２の充放電を制御するとともに、負荷ＬＯＡＤを制御するようになっている。 The vehicle power supply system 100 controls charging / discharging of the first and second batteries B1 and B2 mounted on a vehicle (not shown) such as a two-wheeled vehicle using an AC voltage generated by the AC generator ACG. In addition, the load LOAD is controlled.
　上記交流発電機ＡＣＧは、該ハイブリッド二輪車の内燃機関Ｅに接続されている。そして、後述のように、制御部ＥＣＵは、交流発電機ＡＣＧを駆動することにより、内燃機関Ｅの起動及び／又は駆動するようになっている。 The AC generator ACG is connected to the internal combustion engine E of the hybrid motorcycle. As described later, the control unit ECU drives and / or drives the internal combustion engine E by driving the AC generator ACG.
　この交流発電機ＡＣＧは、例えば、該ハイブリッド二輪車の内燃機関Ｅにより駆動されるオルタネータとして機能することが可能になっている。この場合、この交流発電機ＡＣＧは、第１、第２のバッテリＢ１、Ｂ２を充電するとともに負荷ＬＯＡＤを駆動するための交流電圧を発生して出力するようになっている。 The AC generator ACG can function, for example, as an alternator driven by the internal combustion engine E of the hybrid motorcycle. In this case, the AC generator ACG generates and outputs an AC voltage for charging the first and second batteries B1 and B2 and driving the load LOAD.
　なお、後述のように、制御部ＥＣＵは、ブリッジ回路（図示せず）により、交流発電機ＡＣＧが発電した当該交流電圧を直流電圧に変換し、この直流電圧を、第１、第２のスイッチＳＷ１、ＳＷ２を介して、第１、第２のバッテリＢ１、Ｂ２に供給するようになっている。 As will be described later, the control unit ECU converts the AC voltage generated by the AC generator ACG into a DC voltage using a bridge circuit (not shown), and converts the DC voltage into the first and second switches. The first and second batteries B1 and B2 are supplied via SW1 and SW2.
　一方、交流発電機ＡＣＧは、該ハイブリッド二輪車の内燃機関Ｅを駆動するモータとしても機能することが可能になっている。この場合、この交流発電機ＡＣＧは、該ハイブリッド二輪車の内燃機関Ｅに接続され、制御部ＥＣＵは、第１又は第２のバッテリＢ１、Ｂ２が出力する電力で、交流発電機ＡＣＧを駆動することにより、内燃機関Ｅを起動し、及び／又は、内燃機関Ｅを駆動する（回転をアシストする）ようになっている。 On the other hand, the AC generator ACG can also function as a motor for driving the internal combustion engine E of the hybrid motorcycle. In this case, the AC generator ACG is connected to the internal combustion engine E of the hybrid motorcycle, and the control unit ECU drives the AC generator ACG with the electric power output from the first or second battery B1 or B2. Thus, the internal combustion engine E is started and / or the internal combustion engine E is driven (rotation is assisted).
　また、第１のバッテリＢ１は、第１の電源端子ＴＶ１と第１の接地端子ＴＧ１との間に第１の電源電圧を出力し、充電可能になっている。この第１のバッテリＢ１の正極が第１の電源端子ＴＶ１に接続され、第１のバッテリＢ１の負極が第１の接地端子ＴＧ１に接続されている。 Also, the first battery B1 outputs a first power supply voltage between the first power supply terminal TV1 and the first ground terminal TG1, and can be charged. The positive electrode of the first battery B1 is connected to the first power supply terminal TV1, and the negative electrode of the first battery B1 is connected to the first ground terminal TG1.
　この第１のバッテリＢ１は、既述のように、例えば、鉛バッテリであり、第１の電源電圧は、例えば、１４Ｖである。第１のバッテリＢ１の電力は、第２のバッテリＢ２に異常が無い場合、内燃機関Ｅの始動、ライトや制御部ＥＣＵの駆動のために用いられる。 As described above, the first battery B1 is, for example, a lead battery, and the first power supply voltage is, for example, 14V. The electric power of the first battery B1 is used for starting the internal combustion engine E, driving the light and the control unit ECU when there is no abnormality in the second battery B2.
　また、第２のバッテリＢ２は、第１の電源電圧よりも高い第２の電源電圧を第２の電源端子ＴＶ２と第２の接地端子ＴＧ２との間に出力し、充電可能になっている。 In addition, the second battery B2 outputs a second power supply voltage higher than the first power supply voltage between the second power supply terminal TV2 and the second ground terminal TG2, and can be charged.
　この第２のバッテリＢ２の正極が第２の電源端子ＴＶ２に接続され、第２のバッテリＢ２の負極が第２の接地端子ＴＧ２に接続されている。また、第２の接地端子ＴＧ２は、接地に接続されている。 The positive electrode of the second battery B2 is connected to the second power supply terminal TV2, and the negative electrode of the second battery B2 is connected to the second ground terminal TG2. The second ground terminal TG2 is connected to the ground.
　この第２のバッテリＢ２は、既述のように、例えば、リチウムイオンバッテリであり、鉛バッテリが出力する第１の電源電圧（例えば、１４Ｖ）よりも高い第２の電源電圧（例えば、５０Ｖ）を出力するようになっている。 As described above, the second battery B2 is, for example, a lithium ion battery, and has a second power supply voltage (for example, 50V) higher than the first power supply voltage (for example, 14V) output from the lead battery. Is output.
　特に、この第２のバッテリＢ２は、第２のバッテリＢ２の状態に関する情報を制御部ＥＣＵに送信する通信部Ｘが備えられている。 In particular, the second battery B2 includes a communication unit X that transmits information related to the state of the second battery B2 to the control unit ECU.
　また、ダウンレギュレータＤＲは、第２のバッテリＢ２が電源端子ＴＶ２Ａと接地端子ＴＧ２Ａとの間に出力する第２の電源電圧を降圧して第１の電源端子ＴＶ１と第１の接地端子ＴＧ１との間に出力するＤＣ－ＤＣコンバータである。なお、例えば、電源端子ＴＶ２Ａは、第２の電源端子ＴＶ２に電気的に接続され、接地端子ＴＧ２Ａは、第２の接地端子ＴＧ２に電気的に接続されている。 Further, the down regulator DR steps down the second power supply voltage output by the second battery B2 between the power supply terminal TV2A and the ground terminal TG2A, and reduces the first power supply terminal TV1 and the first ground terminal TG1. It is a DC-DC converter that outputs in between. For example, the power terminal TV2A is electrically connected to the second power terminal TV2, and the ground terminal TG2A is electrically connected to the second ground terminal TG2.
　また、第１のスイッチＳＷ１は、オンすることにより、第１の電源端子ＴＶ１と第３の電源端子ＴＶ３との間を導通させ且つ第１の接地端子ＴＧ１と第３の接地端子ＴＧ３との間を導通するようになっている。 In addition, the first switch SW1 is turned on to conduct between the first power supply terminal TV1 and the third power supply terminal TV3 and between the first ground terminal TG1 and the third ground terminal TG3. Is to be conducted.
　一方、この第１のスイッチＳＷ１は、オフすることにより、第１の電源端子ＴＶ１と第３の電源端子ＴＶ３との間を遮断させ且つ第１の接地端子ＴＧ１と第３の接地端子ＴＧ３との間を遮断するようになっている。 On the other hand, the first switch SW1 is turned off to cut off between the first power supply terminal TV1 and the third power supply terminal TV3, and between the first ground terminal TG1 and the third ground terminal TG3. It is designed to block the gap.
　この第１のスイッチＳＷ１は、例えば、機械式の開閉器である。 The first switch SW1 is, for example, a mechanical switch.
　また、第２のスイッチＳＷ２は、オンすることにより、第２の電源端子ＴＶ２と第３の電源端子ＴＶ３との間を導通させ且つ第２の接地端子ＴＧ２と第３の接地端子ＴＧ３との間を導通するようになっている。 In addition, the second switch SW2 is turned on to conduct between the second power supply terminal TV2 and the third power supply terminal TV3 and between the second ground terminal TG2 and the third ground terminal TG3. Is to be conducted.
　一方、このスイッチＳＷ２は、オフすることにより、第２の電源端子ＴＶ２と第３の電源端子ＴＶ３との間を遮断させ且つ第２の接地端子ＴＧ２と第３の接地端子ＴＧ３との間を遮断するようになっている。 On the other hand, when the switch SW2 is turned off, the switch between the second power supply terminal TV2 and the third power supply terminal TV3 is cut off and the switch between the second ground terminal TG2 and the third ground terminal TG3 is cut off. It is supposed to be.
　この第２のスイッチＳＷ２は、例えば、機械式の開閉器である。 The second switch SW2 is, for example, a mechanical switch.
　また、負荷ＬＯＡＤは、第１の電源端子ＴＶ２と第１の接地端子ＴＧ１との間に接続されている。すなわち、負荷ＬＯＡＤの高電位側の端子は、第１の電源端子ＴＶ１に接続され、負荷ＬＯＡＤの低電位側の端子は、第１の接地端子ＴＧ１に接続されている。 The load LOAD is connected between the first power supply terminal TV2 and the first ground terminal TG1. That is, the high potential side terminal of the load LOAD is connected to the first power supply terminal TV1, and the low potential side terminal of the load LOAD is connected to the first ground terminal TG1.
　この負荷ＬＯＡＤは、第１の電源端子ＴＶ１と第１の接地端子ＴＧ１との間に供給される電圧により駆動するようになっている。 The load LOAD is driven by a voltage supplied between the first power supply terminal TV1 and the first ground terminal TG1.
　この負荷ＬＯＡＤは、例えば、内燃機関Ｅの点火を制御するためのイグニッションコイル、内燃機関Ｅに燃料を供給するためのフュエルポンプ、又は、内燃機関Ｅの供給する燃料を噴射するインジェクタ等、内燃機関Ｅの始動（駆動）のために必要な機構である。 The load LOAD is, for example, an internal combustion engine such as an ignition coil for controlling the ignition of the internal combustion engine E, a fuel pump for supplying fuel to the internal combustion engine E, or an injector for injecting fuel supplied by the internal combustion engine E. This mechanism is necessary for starting (driving) E.
　また、第１のヒューズＨ１は、第１の電源端子ＴＶ１と第１のバッテリＢ１の正極との間に接続されている。 The first fuse H1 is connected between the first power supply terminal TV1 and the positive electrode of the first battery B1.
　この第１のヒューズＨ１は、第１の電源端子ＴＶ１と第１のバッテリＢ１の正極との間に、予め設定した第１の規定値以上の電流が流れた場合には、溶断されるようになっている。 The first fuse H1 is blown when a current exceeding a first predetermined value set in advance flows between the first power supply terminal TV1 and the positive electrode of the first battery B1. It has become.
　この第１のヒューズＨ１により、例えば、第１のバッテリＢ１が該第１の規定値以上の電流で充電されることを防止することができる。 The first fuse H1 can prevent, for example, the first battery B1 from being charged with a current equal to or higher than the first specified value.
　また、第２のヒューズＨ２は、第１の電源端子ＴＶ１と負荷ＬＯＡＤ（負荷ＬＯＡＤの高電位側の端子）との間に接続されている。 The second fuse H2 is connected between the first power supply terminal TV1 and the load LOAD (terminal on the high potential side of the load LOAD).
　この第２のヒューズＨ２は、第１の電源端子ＴＶ１と負荷ＬＯＡＤ（負荷ＬＯＡＤの高電位側の端子）との間に、予め設定した第２の規定値以上の電流が流れた場合には、溶断されるようになっている。 In the second fuse H2, when a current equal to or higher than a preset second specified value flows between the first power supply terminal TV1 and the load LOAD (terminal on the high potential side of the load LOAD), It is supposed to be blown out.
　この第２のヒューズＨ２により、例えば、負荷ＬＯＡＤに該第２の規定値以上の電流が印加され、負荷ＬＯＡＤが破壊等されることを防止することができる。 The second fuse H2 can prevent, for example, the load LOAD from being applied with a current equal to or greater than the second specified value and destroying the load LOAD.
　また、制御部ＥＣＵは、例えば、第１、第２のスイッチＳＷ１、ＳＷ２、ダウンレギュレータＤＲ、負荷ＬＯＡＤ、交流発電機ＡＣＧ、及び、内燃機関Ｅを制御するようになっている。 Further, the control unit ECU controls, for example, the first and second switches SW1, SW2, the down regulator DR, the load LOAD, the AC generator ACG, and the internal combustion engine E.
　そして、制御部ＥＣＵは、第１のバッテリＢ１、及び、第２のバッテリＢ２の電力を制御して、負荷ＬＯＡＤに供給するようになっている。 And control part ECU controls the electric power of 1st battery B1 and 2nd battery B2, and supplies it to load LOAD.
　この制御部ＥＣＵは、第１のバッテリ（鉛バッテリ）Ｂ１の電力で動作するようになっている。 The control unit ECU operates with the electric power of the first battery (lead battery) B1.
　この制御部ＥＣＵは、第２のバッテリＢ２の状態に基づいて第１のスイッチＳＷ１及び第２のスイッチＳＷ２のオン/オフを制御するとともに、第３の電源端子ＴＶ３と第３の接地端子ＴＧ３との間に供給される電圧により交流発電機ＡＣＧを駆動させ、この交流発電機ＡＣＧの動作を制御するようになっている。 The control unit ECU controls on / off of the first switch SW1 and the second switch SW2 based on the state of the second battery B2, and the third power supply terminal TV3 and the third ground terminal TG3. The AC generator ACG is driven by the voltage supplied between the two and the operation of the AC generator ACG is controlled.
　なお、制御部ＥＣＵは、第２のバッテリＢ２の通信部Ｘが出力した第２のバッテリＢ２の状態に関する情報に基づいて、第２のバッテリＢ２の状態が正常又は異常であるかを判断するようになっている。 Note that the control unit ECU determines whether the state of the second battery B2 is normal or abnormal based on the information regarding the state of the second battery B2 output from the communication unit X of the second battery B2. It has become.
　そして、この第２のバッテリ（リチウムイオンバッテリ）Ｂ２の状態が異常である場合とは、例えば、当該リチウムイオンバッテリのセル電圧、電流が充放電で通常使用する規定電圧・電流範囲外である場合、当該リチウムイオンバッテリのＳＯＣ（Ｓｔａｔｅ　Ｏｆ　Ｃｈａｒｇｅ）が通常使用する規定ＳＣＯ範囲外である場合、当該リチウムイオンバッテリのセル温度が充放電で通常使用する規定温度範囲外である場合や、その他の故障等により、当該リチウムイオンバッテリが所定の電圧を出力しない場合である。 The case where the state of the second battery (lithium ion battery) B2 is abnormal is, for example, the case where the cell voltage and current of the lithium ion battery are outside the specified voltage / current range normally used for charging and discharging. When the lithium ion battery's SOC (State Of Charge) is outside the specified SCO range normally used, the lithium ion battery cell temperature is outside the specified temperature range normally used for charging / discharging, or other failure This is a case where the lithium ion battery does not output a predetermined voltage.
　また、制御部ＥＣＵは、第１、第２のスイッチＳＷ１、ＳＷ２の故障（オープン故障、ショート故障）を検出可能になっている。 Further, the control unit ECU can detect a failure (open failure, short failure) of the first and second switches SW1 and SW2.
　ここで、例えば、制御部ＥＣＵは、第２のバッテリＢ２の状態が正常である場合には、第２のスイッチＳＷ２をオンし且つ第１のスイッチＳＷ１をオフするようになっている。 Here, for example, when the state of the second battery B2 is normal, the control unit ECU turns on the second switch SW2 and turns off the first switch SW1.
　より具体的には、負荷ＬＯＡＤを駆動させる時に、制御部ＥＣＵは、第２のバッテリＢ２の状態が正常である場合には、第２のスイッチＳＷ２をオンし且つ第１のスイッチＳＷ１をオフした状態で、交流発電機ＡＣＧが発電した交流電圧を整流した直流電圧を第３の電源端子ＴＶ３と第３の接地端子ＴＧ３との間に供給するようになっている。 More specifically, when driving the load LOAD, when the state of the second battery B2 is normal, the control unit ECU turns on the second switch SW2 and turns off the first switch SW1. In this state, a DC voltage obtained by rectifying the AC voltage generated by the AC generator ACG is supplied between the third power supply terminal TV3 and the third ground terminal TG3.
　これによって、第２のバッテリＢ２を充電するとともに、ダウンレギュレータＤＲが当該直流電圧を降圧して第１の電源端子ＴＶ１と第１の接地端子ＴＧ１との間に出力した降圧電圧により第１のバッテリＢ１を充電し且つ当該降圧電圧を負荷ＬＯＡＤに供給するようになっている。 Thus, the second battery B2 is charged, and the first battery is reduced by the step-down voltage output by the down regulator DR between the first power supply terminal TV1 and the first ground terminal TG1 after stepping down the DC voltage. B1 is charged and the step-down voltage is supplied to the load LOAD.
　また、交流発電機ＡＣＧを駆動させる時に、制御部ＥＣＵは、第２のバッテリＢ２の状態が正常である場合には、第２のスイッチＳＷ２をオンし且つ第１のスイッチＳＷ１をオフすることで、第２のバッテリＢ２が出力する第２の電源電圧に基づいて交流発電機ＡＣＧを駆動させるようになっている。 Further, when the AC generator ACG is driven, the control unit ECU turns on the second switch SW2 and turns off the first switch SW1 when the state of the second battery B2 is normal. The AC generator ACG is driven based on the second power supply voltage output from the second battery B2.
　一方、制御部ＥＣＵは、第２のバッテリＢ２の状態が異常である場合には、第２のスイッチＳＷ２をオフし且つ第１のスイッチＳＷ１をオンするようになっている。 On the other hand, when the state of the second battery B2 is abnormal, the control unit ECU turns off the second switch SW2 and turns on the first switch SW1.
　より具体的には、負荷ＬＯＡＤを駆動させる時に、制御部ＥＣＵは、第２のバッテリＢ２の状態が異常である場合には、第２のスイッチＳＷ２をオフし且つ第１のスイッチＳＷ１をオンした状態で、交流発電機ＡＣＧが発電した交流電圧を整流した直流電圧を第３の電源端子ＴＶ３と第３の接地端子ＴＧ３との間に供給するようになっている。これによって、当該直流電圧により第１のバッテリＢ１を充電し且つ当該直流電圧を負荷ＬＯＡＤに供給するようになっている。 More specifically, when driving the load LOAD, when the state of the second battery B2 is abnormal, the control unit ECU turns off the second switch SW2 and turns on the first switch SW1. In this state, a DC voltage obtained by rectifying the AC voltage generated by the AC generator ACG is supplied between the third power supply terminal TV3 and the third ground terminal TG3. Thus, the first battery B1 is charged with the DC voltage and the DC voltage is supplied to the load LOAD.
　また、交流発電機ＡＣＧを駆動させる時に、制御部ＥＣＵは、第２のバッテリＢ２の状態が異常である場合には、第２のスイッチＳＷ２をオフし且つ第１のスイッチＳＷ１をオンすることで、第１のバッテリＢ１が出力する第１の電源電圧に基づいて交流発電機ＡＣＧを駆動させるようになっている。 Further, when the AC generator ACG is driven, if the state of the second battery B2 is abnormal, the control unit ECU turns off the second switch SW2 and turns on the first switch SW1. The AC generator ACG is driven based on the first power supply voltage output from the first battery B1.
　なお、制御部ＥＣＵは、内燃機関Ｅの起動時には、第２のバッテリＢ２の状態に拘わらず、第２のスイッチＳＷ２をオフし且つ第１のスイッチＳＷ１をオンして、第１のバッテリ（鉛バッテリ）Ｂ１が出力する電圧で、交流発電機ＡＣＧを駆動して、内燃機関Ｅを起動するようになっている。 Note that, when the internal combustion engine E is started, the control unit ECU turns off the second switch SW2 and turns on the first switch SW1 regardless of the state of the second battery B2. Battery) The AC generator ACG is driven by the voltage output from B1, and the internal combustion engine E is started.
　次に、以上のような構成を有する車両用電力供給システム１００の制御方法の動作フローの一例について説明する。ここで、図２は、図１に示す車両用電力供給システムの動作フローの一例を示す図である。 Next, an example of the operation flow of the control method of the vehicle power supply system 100 having the above configuration will be described. Here, FIG. 2 is a diagram illustrating an example of an operation flow of the vehicle power supply system illustrated in FIG. 1.
　先ず、例えば、制御部ＥＣＵは、第２のバッテリＢ２の通信部Ｘが出力した第２のバッテリＢ２の状態に関する情報に基づいて、第２のバッテリＢ２の状態が正常又は異常であるかを判断する。すなわち、制御部ＥＣＵは、第２のバッテリＢ２の通信部Ｘが出力した第２のバッテリＢ２の状態に関する情報に基づいて、第２のバッテリＢ２の故障を検出する（ステップＳ１）。 First, for example, the control unit ECU determines whether the state of the second battery B2 is normal or abnormal based on the information regarding the state of the second battery B2 output from the communication unit X of the second battery B2. To do. That is, the control unit ECU detects a failure of the second battery B2 based on the information regarding the state of the second battery B2 output from the communication unit X of the second battery B2 (step S1).
　そして、制御部ＥＣＵは、ステップＳ１において第２のバッテリＢ２に異常（故障）があると判断した場合には、第１、第２のスイッチＳＷ１、ＳＷ２の故障（オープン故障、ショート故障）を検出（判定）する（ステップＳ２）。 If the control unit ECU determines that there is an abnormality (failure) in the second battery B2 in step S1, it detects a failure (open failure, short failure) in the first and second switches SW1 and SW2. (Determine) (Step S2).
　そして、制御部ＥＣＵは、ステップＳ２において第１、第２のスイッチＳＷ１、ＳＷ２に故障が無いと判定した場合、第２のバッテリ（リチウムイオンバッテリ）Ｂ２を充電しているときには交流発電機ＡＣＧの制御を停止して第２のバッテリＢ２を充電するための発電を停止する（ステップＳ３）。 When the control unit ECU determines in step S2 that the first and second switches SW1 and SW2 have no failure, when the second battery (lithium ion battery) B2 is being charged, the control unit ECU The power generation for stopping the control and charging the second battery B2 is stopped (step S3).
　同様に、ステップＳ２において第１、第２のスイッチＳＷ１、ＳＷ２に故障が無いと判定した場合、内燃機関Ｅを駆動している（交流発電機ＡＣＧを駆動させる）ときには第２のバッテリＢ２が出力する電力による交流発電機ＡＣＧの駆動を停止して、内燃機関Ｅの駆動を停止する（ステップＳ３）。 Similarly, when it is determined in step S2 that the first and second switches SW1 and SW2 have no failure, the second battery B2 is output when the internal combustion engine E is driven (the AC generator ACG is driven). The driving of the AC generator ACG with the electric power to be stopped is stopped, and the driving of the internal combustion engine E is stopped (step S3).
　次に、制御部ＥＣＵは、第２のバッテリＢ２の状態が異常であると判断しているので、第２のスイッチＳＷ２をオフする（ステップＳ４）。 Next, since the control unit ECU determines that the state of the second battery B2 is abnormal, it turns off the second switch SW2 (step S4).
　次に、制御部ＥＣＵは、第１のスイッチＳＷ１をオンする（ステップＳ５）。 Next, the control unit ECU turns on the first switch SW1 (step S5).
　このように、制御部ＥＣＵは、第２のバッテリＢ２の状態が異常である場合には、第２のスイッチＳＷ２をオフし且つ第１のスイッチＳＷ１をオンする。 Thus, when the state of the second battery B2 is abnormal, the control unit ECU turns off the second switch SW2 and turns on the first switch SW1.
　既述のように、例えば、負荷ＬＯＡＤを駆動させる時に、制御部ＥＣＵは、第２のバッテリＢ２の状態が異常である場合には、第２のスイッチＳＷ２をオフし且つ第１のスイッチＳＷ１をオンした状態で、交流発電機ＡＣＧが発電した交流電圧を整流した直流電圧を第３の電源端子ＴＶ３と第３の接地端子ＴＧ３との間に供給する。これによって、当該直流電圧により第１のバッテリＢ１を充電し且つ当該直流電圧を負荷ＬＯＡＤに供給する。 As described above, for example, when driving the load LOAD, when the state of the second battery B2 is abnormal, the control unit ECU turns off the second switch SW2 and turns off the first switch SW1. In the ON state, a DC voltage obtained by rectifying the AC voltage generated by the AC generator ACG is supplied between the third power supply terminal TV3 and the third ground terminal TG3. Thus, the first battery B1 is charged with the DC voltage and the DC voltage is supplied to the load LOAD.
　また、既述のように、例えば、交流発電機ＡＣＧを駆動させる時に、制御部ＥＣＵは、第２のバッテリＢ２の状態が異常である場合には、第２のスイッチＳＷ２をオフし且つ第１のスイッチＳＷ１をオンすることで、第１のバッテリＢ１が出力する第１の電源電圧に基づいて交流発電機ＡＣＧを駆動させる。 Further, as described above, for example, when the AC generator ACG is driven, the control unit ECU turns off the second switch SW2 and the first switch if the state of the second battery B2 is abnormal. By turning on the switch SW1, the AC generator ACG is driven based on the first power supply voltage output from the first battery B1.
　これにより、車両用電力供給システム１００は、第２のバッテリ（リチウムイオンバッテリ）Ｂ２が故障した場合に、交流発電機ＡＣＧの駆動（内燃機関Ｅの回転のアシスト）や負荷ＬＯＡＤの駆動を継続することができる。 As a result, when the second battery (lithium ion battery) B2 fails, the vehicle power supply system 100 continues to drive the AC generator ACG (rotation assist of the internal combustion engine E) and drive the load LOAD. be able to.
　特に、制御部ＥＣＵは、第２のバッテリＢ２が故障等により、所定の電圧を出力しない場合、制御部ＥＣＵは第１のバッテリ（鉛バッテリ）Ｂ１の電力で駆動できるので、当該鉛バッテリの電力で、内燃機関Ｅのアシスト等、ハイブリッド二輪車が走行を継続するための切換を実行することできる。さらに、制御部ＥＣＵは、ダウンレギュレータＤＲを回路的に迂回して、鉛バッテリを充放電させるようにできる。 In particular, when the second battery B2 does not output a predetermined voltage due to a failure or the like, the control unit ECU can be driven by the power of the first battery (lead battery) B1. Thus, it is possible to execute switching for continuing the traveling of the hybrid motorcycle, such as assisting of the internal combustion engine E. Further, the control unit ECU can bypass the down regulator DR in a circuit to charge / discharge the lead battery.
　すなわち、Ｌｉバッテリが故障等により、所定の電圧を出力しない場合に、鉛バッテリの電力で、ハイブリッド二輪車の走行を継続させることができる。 That is, when the Li battery does not output a predetermined voltage due to a failure or the like, the hybrid motorcycle can continue to run with the power of the lead battery.
　なお、制御部ＥＣＵは、既述のステップＳ１～Ｓ５の処理の後、第２のバッテリＢ２の通信部Ｘが出力した第２のバッテリＢ２の状態に関する情報に基づいて、第２のバッテリＢ２の状態が正常に復帰したことを検知すると、例えば、第１、第２のスイッチＳＷ１、ＳＷ２の故障（オープン故障、ショート故障）を検出（判定）する。そして、制御装置ＥＣＵは、第１、第２のスイッチＳＷ１、ＳＷ２に故障が無いと判定した場合には、第１のスイッチＳＷ１をオフした後、第２のスイッチＳＷ２をオンする。 The control unit ECU, after the processes of steps S1 to S5 described above, determines the second battery B2 based on the information on the state of the second battery B2 output from the communication unit X of the second battery B2. When it is detected that the state has returned to normal, for example, a failure (open failure, short failure) of the first and second switches SW1 and SW2 is detected (determined). When determining that the first and second switches SW1 and SW2 have no failure, the control device ECU turns off the first switch SW1 and then turns on the second switch SW2.
　これにより、交流発電機ＡＣＧの発電により第２のバッテリ（リチウムイオンバッテリ）Ｂ２を充電し、又は、第２のバッテリＢ２が出力する電力により交流発電機ＡＣＧを駆動して、内燃機関Ｅを駆動可能な状態に復帰させることが可能な状態になる。 Thereby, the second battery (lithium ion battery) B2 is charged by the power generation of the AC generator ACG, or the AC generator ACG is driven by the electric power output from the second battery B2, thereby driving the internal combustion engine E. It will be possible to return to a possible state.
　以上のように、本発明の一態様に係る車両用電力供給システムは、第１の電源端子ＴＶ１と第１の接地端子ＴＧ１との間に第１の電源電圧を出力し、充電可能な第１のバッテリＢ１と、第１の電源電圧よりも高い第２の電源電圧を第２の電源端子ＴＶ２と第２の接地端子ＴＧ２との間に出力し、充電可能な第２のバッテリＢ２と、第２のバッテリＢ２が出力する第２の電源電圧を降圧して第１の電源端子ＴＶ１と第１の接地端子ＴＧ１との間に出力するダウンレギュレータＤＲと、オンすることにより第１の電源端子ＴＶ１と第３の電源端子ＴＶ３との間を導通させ且つ第１の接地端子ＴＧ１と第３の接地端子ＴＧ３との間を導通し、オフすることにより第１の電源端子ＴＶ１と第３の電源端子ＴＶ３との間を遮断させ且つ第１の接地端子ＴＧ１と第３の接地端子ＴＧ３との間を遮断する第１のスイッチＳＷ１と、オンすることにより第２の電源端子ＴＶ２と第３の電源端子ＴＶ３との間を導通させ且つ第２の接地端子ＴＧ２と第３の接地端子ＴＧ３との間を導通し、オフすることにより第２の電源端子と第３の電源端子ＴＶ３との間を遮断させ且つ第２の接地端子と第３の接地端子ＴＧ３との間を遮断する第２のスイッチＳＷ２と、第１の電源端子ＴＶ１と第１の接地端子ＴＧ１との間に接続された負荷ＬＯＡＤと、交流発電機ＡＣＧと、第２のバッテリＢ２の状態に基づいて第１のスイッチＳＷ１及び第２のスイッチＳＷ２のオン/オフを制御するとともに、第３の電源端子ＴＶ３と第３の接地端子ＴＧ３との間に供給される電圧により交流発電機ＡＣＧを駆動させ、交流発電機ＡＣＧの動作を制御する制御部ＥＣＵと、を備える。 As described above, the vehicle power supply system according to one aspect of the present invention outputs the first power supply voltage between the first power supply terminal TV1 and the first ground terminal TG1 and can be charged. Battery B1, a second power supply voltage higher than the first power supply voltage is output between the second power supply terminal TV2 and the second ground terminal TG2, and the second battery B2 that can be charged, The second power supply voltage output from the second battery B2 is stepped down and output between the first power supply terminal TV1 and the first ground terminal TG1, and the first power supply terminal TV1 is turned on by turning it on. And the third power supply terminal TV3 and the first ground terminal TG1 and the third ground terminal TG3 are turned on and turned off to turn off the first power supply terminal TV1 and the third power supply terminal TV3. The first grounding terminal is disconnected from the TV 3 The first switch SW1 that cuts off between the G1 and the third ground terminal TG3, and the second switch 3 is turned on to make the second power terminal TV2 and the third power terminal TV3 conductive and the second ground terminal. The TG2 and the third ground terminal TG3 are conducted and turned off to shut off the second power terminal and the third power terminal TV3, and the second ground terminal and the third ground terminal TG3. The state of the second switch SW2 that cuts off the power supply, the load LOAD connected between the first power supply terminal TV1 and the first ground terminal TG1, the AC generator ACG, and the second battery B2 The first switch SW1 and the second switch SW2 are controlled to be turned on / off based on the voltage of the AC generator ACG by the voltage supplied between the third power supply terminal TV3 and the third ground terminal TG3. Drive and AC power generation And a control unit ECU which controls the operation of the ACG, the.
　そして、制御部は、第２のバッテリＢ２の状態が正常である場合には、第２のスイッチＳＷ２をオンし且つ第１のスイッチＳＷ１をオフし、一方、第２のバッテリＢ２の状態が異常である場合には、第２のスイッチＳＷ２をオフし且つ第１のスイッチＳＷ１をオンする。 When the state of the second battery B2 is normal, the control unit turns on the second switch SW2 and turns off the first switch SW1, while the state of the second battery B2 is abnormal. In the case, the second switch SW2 is turned off and the first switch SW1 is turned on.
　これにより、制御部は、第２のバッテリＢ２の状態が異常である場合には、第２のスイッチＳＷ２をオフし且つ第１のスイッチＳＷ１をオンした状態で、交流発電機ＡＣＧが発電した交流電圧を整流した直流電圧を第３の電源端子ＴＶ３と第３の接地端子ＴＧ３との間に供給することで、当該直流電圧により第１のバッテリＢ１を充電し且つ直流電圧を負荷ＬＯＡＤに供給する。 As a result, when the state of the second battery B2 is abnormal, the control unit turns off the second switch SW2 and turns on the first switch SW1. By supplying a DC voltage obtained by rectifying the voltage between the third power supply terminal TV3 and the third ground terminal TG3, the first battery B1 is charged by the DC voltage and the DC voltage is supplied to the load LOAD. .
　これにより、本発明の一態様に係る車両用電力供給システムは、バッテリが故障した場合に、交流発電機ＡＣＧや負荷ＬＯＡＤの駆動を継続することができる。 Thereby, the vehicle power supply system according to one aspect of the present invention can continue to drive the AC generator ACG and the load LOAD when the battery fails.
　特に、制御部は、リチウムイオンバッテリが故障等により、所定の電圧を出力しない場合、制御部は第１のバッテリＢ１（鉛バッテリ）の電力で駆動できるので、当該鉛バッテリの電力で、エンジンのアシスト等、ハイブリッド二輪車が走行を継続するための切換を実行することできる。さらに、制御部は、ダウンレギュレータＤＲを回路的に迂回して、鉛バッテリを充放電させるようにする。 In particular, when the lithium ion battery does not output a predetermined voltage due to a failure or the like, the control unit can be driven by the power of the first battery B1 (lead battery). It is possible to execute switching such as assistance so that the hybrid motorcycle can continue running. Further, the control unit bypasses the down regulator DR in a circuit manner to charge and discharge the lead battery.
　すなわち、リチウムイオンバッテリが故障等により、所定の電圧を出力しない場合に、鉛バッテリの電力で、ハイブリッド二輪車が走行を継続させることができる。 That is, when the lithium ion battery does not output a predetermined voltage due to a failure or the like, the hybrid motorcycle can continue running with the power of the lead battery.
　本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれると同様に、特許請求の範囲に記載された発明とその均等の範囲に含まれるものである。 Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.
１００　車両用電力供給システム
Ｂ１　第１のバッテリ（鉛バッテリ）
Ｂ２　第２のバッテリ（リチウムイオンバッテリ）
ＤＲ　ダウンレギュレータ（ＤＣ－ＤＣコンバータ）
ＳＷ１　第１のスイッチ
ＳＷ２　第２のスイッチ
ＬＯＡＤ　負荷
ＡＣＧ　交流発電機
Ｈ１　第１のヒューズ
Ｈ２　第２のヒューズ
ＥＣＵ　制御部（車両用電力供給装置）
Ｅ　内燃機関（エンジン）
Ｘ　通信部
ＴＶ１　第１の電源端子
ＴＧ１　第１の接地端子
ＴＶ２　第２の電源端子
ＴＧ２　第２の接地端子
ＴＶ３　第３の電源端子
ＴＧ３　第３の接地端子 100 vehicle power supply system B1 first battery (lead battery)
B2 Second battery (lithium ion battery)
DR down regulator (DC-DC converter)
SW1 1st switch SW2 2nd switch LOAD Load ACG AC generator H1 1st fuse H2 2nd fuse ECU Control part (electric power supply device for vehicles)
E Internal combustion engine
X communication unit TV1 first power terminal TG1 first ground terminal TV2 second power terminal TG2 second ground terminal TV3 third power terminal TG3 third ground terminal

Claims (15)

  1. 　第１の電源端子と第１の接地端子との間に第１の電源電圧を出力し充電可能な第１のバッテリ、及び、前記第１の電源電圧よりも高い第２の電源電圧を第２の電源端子と第２の接地端子との間に出力し充電可能な第２のバッテリの電力を制御して、前記第１の電源端子と前記第１の接地端子との間に接続された負荷に供給し、前記第２のバッテリが出力する前記第２の電源電圧が降圧されて前記第１の電源端子と前記第１の接地端子との間に供給されるようになっている、車両用電力供給装置であって、
    　前記第２のバッテリの状態に基づいて、オンすることにより前記第１の電源端子と第３の電源端子との間を導通させ且つ前記第１の接地端子と第３の接地端子との間を導通し、オフすることにより前記第１の電源端子と前記第３の電源端子との間を遮断させ且つ前記第１の接地端子と前記第３の接地端子との間を遮断する第１のスイッチ、及び、オンすることにより前記第２の電源端子と前記第３の電源端子との間を導通させ且つ前記第２の接地端子と前記第３の接地端子との間を導通し、オフすることにより前記第２の電源端子と前記第３の電源端子との間を遮断させ且つ前記第２の接地端子と前記第３の接地端子との間を遮断する第２のスイッチの、オン/オフを制御するとともに、前記第３の電源端子と前記第３の接地端子との間に供給される電圧により交流発電機を駆動させ、前記交流発電機の動作を制御する制御部を備え、
    　前記制御部は、
    　前記第２のバッテリの状態が正常である場合には、前記第２のスイッチをオンし且つ前記第１のスイッチをオフし、
    　一方、前記第２のバッテリの状態が異常である場合には、前記第２のスイッチをオフし且つ前記第１のスイッチをオンする
    　ことを特徴とする車両用電力供給装置。     A first battery that can be charged by outputting a first power supply voltage between a first power supply terminal and a first ground terminal, and a second power supply voltage higher than the first power supply voltage A load connected between the first power terminal and the first ground terminal by controlling the power of the second battery that can be output and charged between the power terminal and the second ground terminal And the second power supply voltage output from the second battery is stepped down and supplied between the first power supply terminal and the first ground terminal. A power supply device,
    Based on the state of the second battery, it is turned on to conduct between the first power supply terminal and the third power supply terminal and between the first ground terminal and the third ground terminal. A first switch that cuts off between the first power supply terminal and the third power supply terminal and cuts off between the first ground terminal and the third ground terminal by conducting and turning off. And turning on to conduct between the second power supply terminal and the third power supply terminal, and conducting between the second ground terminal and the third ground terminal, and turning off. To turn on / off the second switch that shuts off the second power terminal and the third power terminal and shuts off the second ground terminal and the third ground terminal. Control and supply between the third power supply terminal and the third ground terminal A control unit that drives the alternator with a voltage to be controlled and controls the operation of the alternator,
    The controller is
    If the state of the second battery is normal, turn on the second switch and turn off the first switch;
    On the other hand, when the state of the second battery is abnormal, the second switch is turned off and the first switch is turned on.
  2. 　前記制御部は、
    　前記第２のバッテリの状態が正常である場合には、
    　前記第２のスイッチをオンし且つ前記第１のスイッチをオフした状態で、前記交流発電機が発電した交流電圧を整流した直流電圧を前記第３の電源端子と前記第３の接地端子との間に供給することで、前記第２のバッテリを充電するとともに、ダウンレギュレータが前記直流電圧を降圧して前記第１の電源端子と前記第１の接地端子との間に出力した降圧電圧により前記第１のバッテリを充電し且つ前記降圧電圧を前記負荷に供給する
    　ことを特徴とする請求項１に記載の車両用電力供給装置。     The controller is
    If the state of the second battery is normal,
    With the second switch turned on and the first switch turned off, a DC voltage obtained by rectifying the AC voltage generated by the AC generator is applied to the third power supply terminal and the third ground terminal. The second battery is charged, and a down regulator steps down the DC voltage and outputs the voltage by the step-down voltage output between the first power supply terminal and the first ground terminal. The vehicle power supply device according to claim 1, wherein the first battery is charged and the step-down voltage is supplied to the load.
  3. 　前記制御部は、
    　前記第２のバッテリの状態が異常である場合には、
    　前記第２のスイッチをオフし且つ前記第１のスイッチをオンした状態で、前記交流発電機が発電した交流電圧を整流した直流電圧を前記第３の電源端子と前記第３の接地端子との間に供給することで、前記直流電圧により前記第１のバッテリを充電し且つ前記直流電圧を前記負荷に供給する
    　ことを特徴とする請求項２に記載の車両用電力供給装置。     The controller is
    If the state of the second battery is abnormal,
    With the second switch turned off and the first switch turned on, a DC voltage obtained by rectifying the AC voltage generated by the AC generator is applied to the third power supply terminal and the third ground terminal. The vehicle power supply device according to claim 2, wherein the first battery is charged by the DC voltage and the DC voltage is supplied to the load by being supplied in between.
  4. 　前記制御部は、
    　前記第２のバッテリの状態が正常である場合には、
    　前記第２のスイッチをオンし且つ前記第１のスイッチをオフすることで、前記第２のバッテリが出力する前記第２の電源電圧に基づいて前記交流発電機を駆動させる
    　ことを特徴とする請求項３に記載の車両用電力供給装置。     The controller is
    If the state of the second battery is normal,
    The AC generator is driven based on the second power supply voltage output from the second battery by turning on the second switch and turning off the first switch. Item 4. The vehicle power supply device according to Item 3.
  5. 　前記制御部は、
    　前記第２のバッテリの状態が異常である場合には、
    　前記第２のスイッチをオフし且つ前記第１のスイッチをオンすることで、前記第１のバッテリが出力する前記第１の電源電圧に基づいて前記交流発電機を駆動させる
    　ことを特徴とする請求項４に記載の車両用電力供給装置。     The controller is
    If the state of the second battery is abnormal,
    The AC generator is driven based on the first power supply voltage output from the first battery by turning off the second switch and turning on the first switch. Item 5. The vehicle power supply device according to Item 4.
  6. 　前記第１のバッテリは、鉛バッテリであり、前記第２のバッテリは、リチウムイオンバッテリである
    　ことを特徴とする請求項５に記載の車両用電力供給装置。     The vehicular power supply device according to claim 5, wherein the first battery is a lead battery, and the second battery is a lithium ion battery.
  7. 　前記車両用電力供給装置は、
    　ハイブリッド二輪車に積載され、前記交流発電機は前記ハイブリッド二輪車の内燃機関に接続され、前記制御部は、前記交流発電機を駆動することにより、前記内燃機関を起動し、及び／又は、前記内燃機関を駆動する
    　ことを特徴とする請求項６に記載の車両用電力供給装置。     The vehicle power supply device includes:
    The AC generator is mounted on a hybrid motorcycle, the AC generator is connected to an internal combustion engine of the hybrid motorcycle, and the control unit starts the internal combustion engine by driving the AC generator and / or the internal combustion engine. The vehicle power supply device according to claim 6, wherein the vehicle power supply device is driven.
  8. 　前記第１の電源電圧は、１４Ｖであり、前記第２の電源電圧は、５０Ｖであることを特徴とする請求項６に記載の車両用電力供給装置。 The vehicle power supply device according to claim 6, wherein the first power supply voltage is 14V and the second power supply voltage is 50V.
  9. 　前記第１及び第２のスイッチは、機械式の開閉器であることを特徴とする請求項７に記載の車両用電力供給装置。 The vehicle power supply device according to claim 7, wherein the first and second switches are mechanical switches.
  10. 　前記第２のバッテリの状態に関する情報を前記制御部に送信する通信部をさらに備え、
    　前記制御部は、
    　前記情報に基づいて、前記第２のバッテリの状態が正常又は異常であるかを判断することを特徴とする請求項７に記載の車両用電力供給装置。     A communication unit that transmits information on the state of the second battery to the control unit;
    The controller is
    The vehicle power supply device according to claim 7, wherein whether the state of the second battery is normal or abnormal is determined based on the information.
  11. 　前記第１の電源端子と前記第１のバッテリの正極との間に第１のヒューズが接続されている
    　ことを特徴とする請求項７に記載の車両用電力供給装置。     The vehicle power supply device according to claim 7, wherein a first fuse is connected between the first power supply terminal and a positive electrode of the first battery.
  12. 　前記第１の電源端子と前記負荷との間に第２のヒューズが接続されていることを特徴とする請求項１０に記載の車両用電力供給装置。 The vehicle power supply apparatus according to claim 10, wherein a second fuse is connected between the first power supply terminal and the load.
  13. 　前記負荷は、前記内燃機関の点火を制御するためのイグニッションコイル、前記内燃機関に燃料を供給するためのフュエルポンプ、又は、前記内燃機関の供給する燃料を噴射するインジェクタの何れかである
    　ことを特徴とする請求項７に記載の車両用電力供給装置。     The load is any one of an ignition coil for controlling ignition of the internal combustion engine, a fuel pump for supplying fuel to the internal combustion engine, or an injector for injecting fuel supplied by the internal combustion engine. The vehicle power supply device according to claim 7, wherein the vehicle power supply device is a vehicle power supply device.
  14. 　第１の電源端子と第１の接地端子との間に第１の電源電圧を出力し、充電可能な第１のバッテリと、
    　前記第１の電源電圧よりも高い第２の電源電圧を第２の電源端子と第２の接地端子との間に出力し、充電可能な第２のバッテリと、
    　前記第２のバッテリが出力する前記第２の電源電圧を降圧して前記第１の電源端子と前記第１の接地端子との間に出力するダウンレギュレータと、
    　オンすることにより前記第１の電源端子と第３の電源端子との間を導通させ且つ前記第１の接地端子と第３の接地端子との間を導通し、オフすることにより前記第１の電源端子と前記第３の電源端子との間を遮断させ且つ前記第１の接地端子と前記第３の接地端子との間を遮断する第１のスイッチと、
    　オンすることにより前記第２の電源端子と前記第３の電源端子との間を導通させ且つ前記第２の接地端子と前記第３の接地端子との間を導通し、オフすることにより前記第２の電源端子と前記第３の電源端子との間を遮断させ且つ前記第２の接地端子と前記第３の接地端子との間を遮断する第２のスイッチと、　
    　前記第１の電源端子と前記第１の接地端子との間に接続された負荷と、
    　交流発電機と、
    　前記第２のバッテリの状態に基づいて前記第１のスイッチ及び前記第２のスイッチのオン/オフを制御するとともに、前記第３の電源端子と前記第３の接地端子との間に供給される電圧により前記交流発電機を駆動させ、前記交流発電機の動作を制御する制御部と、を備え、
    　前記制御部は、
    　前記第２のバッテリの状態が正常である場合には、前記第２のスイッチをオンし且つ前記第１のスイッチをオフし、
    　一方、前記第２のバッテリの状態が異常である場合には、前記第２のスイッチをオフし且つ前記第１のスイッチをオンする
    　ことを特徴とする車両用電力供給システム。     A first battery that outputs and charges a first power supply voltage between a first power supply terminal and a first ground terminal;
    A second battery that outputs a second power supply voltage higher than the first power supply voltage between a second power supply terminal and a second ground terminal, and is rechargeable;
    A down regulator that steps down the second power supply voltage output from the second battery and outputs the second power supply voltage between the first power supply terminal and the first ground terminal;
    By turning on, the first power supply terminal and the third power supply terminal are brought into conduction, and between the first ground terminal and the third grounding terminal, and by turning off, the first power supply terminal and the third power supply terminal are conducted. A first switch that shuts off between the power terminal and the third power terminal and shuts off between the first ground terminal and the third ground terminal;
    By turning on, the second power supply terminal and the third power supply terminal are brought into conduction, and between the second ground terminal and the third ground terminal, and by turning off, the second power supply terminal and the third power supply terminal are conducted. A second switch that cuts off between the second power terminal and the third power terminal and cuts off between the second ground terminal and the third ground terminal;
    A load connected between the first power supply terminal and the first ground terminal;
    An alternator,
    The on / off of the first switch and the second switch is controlled based on the state of the second battery, and is supplied between the third power supply terminal and the third ground terminal. A controller that drives the alternator with voltage and controls the operation of the alternator,
    The controller is
    If the state of the second battery is normal, turn on the second switch and turn off the first switch;
    On the other hand, if the state of the second battery is abnormal, the vehicle power supply system is characterized in that the second switch is turned off and the first switch is turned on.
  15. 　第１の電源端子と第１の接地端子との間に第１の電源電圧を出力し充電可能な第１のバッテリ、及び、前記第１の電源電圧よりも高い第２の電源電圧を第２の電源端子と第２の接地端子との間に出力し充電可能な第２のバッテリの電力を制御して、前記第１の電源端子と前記第１の接地端子との間に接続された負荷に供給し、前記第２のバッテリが出力する前記第２の電源電圧が降圧されて前記第１の電源端子と前記第１の接地端子との間に供給されるようになっている車両用電力供給装置あって、前記第２のバッテリの状態に基づいて、オンすることにより前記第１の電源端子と第３の電源端子との間を導通させ且つ前記第１の接地端子と第３の接地端子との間を導通し、オフすることにより前記第１の電源端子と前記第３の電源端子との間を遮断させ且つ前記第１の接地端子と前記第３の接地端子との間を遮断する第１のスイッチ、及び、オンすることにより前記第２の電源端子と前記第３の電源端子との間を導通させ且つ前記第２の接地端子と前記第３の接地端子との間を導通し、オフすることにより前記第２の電源端子と前記第３の電源端子との間を遮断させ且つ前記第２の接地端子と前記第３の接地端子との間を遮断する第２のスイッチの、オン/オフを制御するとともに、前記第３の電源端子と前記第３の接地端子との間に供給される電圧により交流発電機を駆動させ、前記交流発電機の動作を制御する制御部を備えた車両用駆動装置の制御方法であって、
    　前記第２のバッテリの状態が正常である場合には、前記制御部により、前記第２のスイッチをオンし且つ前記第１のスイッチをオフし、
    　一方、前記第２のバッテリの状態が異常である場合には、前記制御部により、前記第２のスイッチをオフし且つ前記第１のスイッチをオンする
    　ことを特徴とする車両用電力供給装置の制御方法。     A first battery that can be charged by outputting a first power supply voltage between a first power supply terminal and a first ground terminal, and a second power supply voltage higher than the first power supply voltage A load connected between the first power terminal and the first ground terminal by controlling the power of the second battery that can be output and charged between the power terminal and the second ground terminal And the second power supply voltage output from the second battery is stepped down and supplied between the first power supply terminal and the first ground terminal. A supply device that is turned on based on the state of the second battery to establish conduction between the first power supply terminal and the third power supply terminal, and the first ground terminal and the third ground Between the first power supply terminal and the third power supply terminal by conducting between the terminals and turning off. And a first switch that shuts off between the first ground terminal and the third ground terminal, and between the second power terminal and the third power terminal when turned on. And conducting between the second ground terminal and the third ground terminal and turning off, thereby blocking between the second power terminal and the third power terminal and the second power terminal. The second switch that cuts off between the second ground terminal and the third ground terminal is controlled to be turned on / off and supplied between the third power supply terminal and the third ground terminal. A vehicle drive device control method comprising a controller that controls the operation of the alternator by driving the alternator with a voltage,
    When the state of the second battery is normal, the control unit turns on the second switch and turns off the first switch,
    On the other hand, when the state of the second battery is abnormal, the control unit turns off the second switch and turns on the first switch. Control method.
PCT/JP2016/076719 2016-07-22 2016-09-09 Vehicle power supply apparatus, vehicle power supply system, and method for controlling vehicle power supply apparatus WO2018016091A1 (en)

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JP2020092552A (en) * 2018-12-07 2020-06-11 矢崎総業株式会社 Power supply system
CN113386692A (en) * 2020-03-11 2021-09-14 本田技研工业株式会社 Power supply device for vehicle

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CN113386692A (en) * 2020-03-11 2021-09-14 本田技研工业株式会社 Power supply device for vehicle

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