WO2013014866A1 - 車両用電源装置 - Google Patents
車両用電源装置 Download PDFInfo
- Publication number
- WO2013014866A1 WO2013014866A1 PCT/JP2012/004322 JP2012004322W WO2013014866A1 WO 2013014866 A1 WO2013014866 A1 WO 2013014866A1 JP 2012004322 W JP2012004322 W JP 2012004322W WO 2013014866 A1 WO2013014866 A1 WO 2013014866A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- switch
- capacitor
- battery
- voltage
- starter
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
-
- 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
- B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
-
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
-
- 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
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
- B60L7/12—Dynamic electric regenerative braking for vehicles propelled by dc motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/08—Three-wire systems; Systems having more than three wires
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/08—Three-wire systems; Systems having more than three wires
- H02J1/082—Plural DC voltage, e.g. DC supply voltage with at least two different DC voltage levels
-
- 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
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/80—Time limits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
-
- 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
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T10/72—Electric energy management in electromobility
Definitions
- the present invention relates to a vehicle power supply device in a vehicle having an idling stop function.
- FIG. 6 is a circuit diagram of the vehicle power supply device 501 described in Patent Document 1 for compensating for a decrease in the terminal voltage of the battery.
- a DC / DC converter 103 is connected to the battery 101.
- the DC / DC converter 103 includes a booster circuit 105 that boosts the terminal voltage of the battery 101, and a capacitor 107 that is connected between the terminal of the battery 101 and the output terminal of the booster circuit 105. Since the power supply voltage is generated by connecting the battery 101 and the capacitor 107 in series, the DC / DC converter 103 compensates for the decrease in the terminal voltage of the battery 101 by charging the capacitor 107.
- the capacitor 107 can compensate for the decrease in the terminal voltage of the battery 101, and the power supply voltage can be stabilized.
- the power supply voltage can be stabilized, but the current flowing from the battery 101 does not change when the starter is driven when the engine is restarted. The burden is heavy.
- the vehicle power supply device is configured to be provided in a vehicle equipped with an engine, a starter that starts the engine, and a battery that drives the starter.
- the vehicle power supply device includes first to fifth switches, first and second capacitors, a semiconductor switching element, and a control circuit.
- the first switch is configured to be connected to the positive electrode of the battery.
- the first capacitor has a positive electrode configured to be connected to the positive electrode of the battery via the first switch, and a negative electrode connected to the ground.
- the second switch is connected to the positive electrode of the first capacitor.
- the second capacitor has a positive electrode and a negative electrode connected to the positive electrode of the first capacitor via a second switch.
- the third switch is connected between a connection point where the second switch and the negative electrode of the second capacitor are connected to the ground.
- the fourth switch is connected to the positive electrode of the second capacitor.
- the fifth switch is configured to be connected between the positive electrode of the battery and the starter.
- the semiconductor switching element is connected to the positive electrode of the second capacitor, and is configured to intermittently connect between the positive electrode of the battery and the positive electrode of the second capacitor.
- the positive electrode of the second capacitor is configured to be connected to the starter via a fourth switch.
- the control circuit operates to control the first to fifth switches so as to charge the first capacitor and the second capacitor when the starter is not driven.
- the control circuit has a first capacitor voltage that is a voltage between the positive electrode and the negative electrode of the first capacitor and a voltage between the positive electrode and the negative electrode of the second capacitor.
- the first to fifth switches are operated so as to supply battery power to the starter.
- the control circuit configures a parallel circuit with the battery and the first capacitor when the vehicle starts to be used.
- the first to fifth switches are controlled to supply power to the starter so that the second capacitor is connected in series.
- the control circuit disconnects the battery from the starter when the vehicle is in use, and the first capacitor and the second capacitor are connected in series. The first to fifth switches are controlled to supply power to the starter so as to be connected.
- This vehicle power supply device can reduce the burden on the battery when the starter is driven and extend the life of the battery.
- FIG. 1 is a block circuit diagram of a vehicle power supply device according to an embodiment of the present invention.
- FIG. 2 is a flowchart showing the operation of the vehicle power supply device according to the embodiment.
- FIG. 3 is a flowchart showing the operation of the vehicle power supply device according to the embodiment.
- FIG. 4 is a flowchart showing the operation of the vehicle power supply device according to the embodiment.
- FIG. 5 is a flowchart showing the operation of the vehicle power supply device according to the embodiment.
- FIG. 6 is a detailed circuit diagram of a conventional vehicle power supply device.
- FIG. 1 is a block circuit diagram of a vehicle power supply device 10 according to an embodiment of the present invention.
- a thick line indicates a power system wiring
- a thin line indicates a signal system wiring.
- vehicle 10C in the embodiment has an idling stop function for stopping engine 10B when vehicle 10C stops.
- the vehicle 10C includes an engine 10B, a starter 25 that starts the engine 10B, and a battery 11 that drives the starter 25.
- the vehicle power supply device 10 is configured to be provided in the vehicle 10C.
- the vehicle power supply device 10 includes a capacitor 15 having a switch 13 connected to the positive electrode 11A of the battery 11, a positive electrode 15A connected to the battery 11 via the switch 13, and a negative electrode 15B connected to the ground 10A, A switch 17 connected to the positive electrode 15A of the capacitor 15, a capacitor 19 having a negative electrode 19B connected to the positive electrode 15A of the capacitor 15 via the switch 17, and a connection point 19C where the switch 17 and the negative electrode 19B of the capacitor 19 are connected.
- the switch 21 is electrically connected between the capacitor 10 and the ground 10A, the switch 23 is connected to the positive electrode 19A of the capacitor 19, and the positive electrode 11A of the battery 11 is connected to the starter 25.
- the switch 27 is connected to the positive electrode 11A of the battery 11 and the positive electrode 19A of the capacitor 19.
- a diode 35 is a semiconductor switching element, and a control circuit 29 connected to the switch 13,17,21,23,27 electrically.
- the positive electrode 19 ⁇ / b> A of the capacitor 19 is configured to be connected to the starter 25 via the switch 23.
- the anode 35B of the diode 35 is connected to the positive electrode 11A of the battery 11, and the cathode 35A is connected to the positive electrode 19A of the capacitor 19.
- the negative electrode 11B of the battery 11 is connected to the ground 10A.
- the control circuit 29 controls the switches 13, 17, 21, 23, and 27 to charge the capacitors 15 and 19 when the starter 25 is not operated.
- the voltage detection circuit 39 detects a capacitor voltage Vc2, which is a voltage between the positive electrode 19A and the negative electrode 19B of the capacitor 19.
- the control circuit 29 detects the capacitor voltage Vc1 that is the voltage between the positive electrode 15A and the negative electrode 15B of the capacitor 15, that is, the capacitor voltage Vc1 of the positive electrode 15A of the capacitor 15.
- the control circuit 29 switches the switches 13, 17, and 21 to supply the power of the battery 11 to the starter 25 if the total voltage (Vc 1 + Vc 2) of the capacitor voltages Vc 1 and Vc 2 is lower than the predetermined total voltage Vck. , 23 and 27 are controlled.
- the control circuit 29 forms a parallel circuit with the battery 11 and the capacitor 15 when the vehicle 10C is in use, and the parallel circuit and the capacitor 19
- the switches 13, 17, 21, 23, and 27 are controlled so as to be connected in series. Further, if the total voltage (Vc1 + Vc2) is equal to or higher than the predetermined total voltage Vck, the control circuit 29 disconnects the battery 11 from the capacitor 15 when the vehicle 10C is in use, and only the capacitor 15 and the capacitor 19 are connected in series. Thus, the switches 13, 17, 21, 23, 27 are controlled.
- the control circuit 29 supplies power to the starter 25 from only the battery 11, all the capacitors 15, 19, or the capacitors 15, 19 in each state.
- the control circuit 29 connects the capacitor 15 in parallel with the battery 11 to form a parallel circuit. Are connected in series. Therefore, at a cold start when the starter 25 needs to generate the largest torque, the power stored in the capacitors 15 and 19 having a low internal resistance is supplied to the starter 25 with priority over the power of the battery 11. Therefore, the current flowing from the battery 11 is reduced, and the burden on the battery 11 is reduced. Further, when the engine 10B is restarted when the vehicle 10C is being used and stopped, only the electric power stored in the capacitors 15 and 19 is supplied to the starter 25, and the electric power of the battery 11 is supplied to the starter 25. Not.
- the starter 25 is operated only by the battery 11 only when the total voltage (Vc1 + Vc2) is lower than the voltage Vb of the battery 11. For these reasons, the burden on the battery 11 can be reduced, and the life of the battery 11 can be extended.
- the generator 31 mounted on the vehicle 10C is driven by the engine 10B to generate electric power. Further, the generator 31 generates regenerative power during braking of the vehicle 10C.
- a load 10D made of various electrical components such as a car audio device and the battery 11 are electrically connected to the generator 31 by power system wiring.
- the battery 11 is a lead battery, and the open circuit voltage Vb0 between the positive electrode 11A and the negative electrode 11B of the battery 11 is 12V.
- the open circuit voltage Vb0 of the battery 11 is the battery voltage Vb between the positive electrode 11A and the negative electrode 11B when no load is connected to the battery 11.
- the positive electrode 11 A of the battery 15 is electrically connected to the positive electrode 11 A of the battery 11 via the switch 13.
- the switch 13 can perform on / off control that can be turned on / off from the outside, and current limit control that can limit the flowing current to a predetermined value.
- the predetermined value can be arbitrarily set. That is, the switch 13 is controlled by an external switch control signal SW1 to turn on and off, and can control the current that flows when the switch 13 is on.
- the switch 13 is not limited to an FET, and may be configured to be capable of on / off control and current limit control, for example, a combination of a relay and a resistor.
- the capacitor 15 includes five electric double layer capacitors having a rated voltage of 2.5 V connected in series.
- the rated voltage is defined as a charging voltage at which the life of the electric double layer capacitor is longer than the life of the vehicle 10C.
- the rated charging voltage of the entire capacitor 15 is 12.5V.
- a current sensor 33 is connected to the switch 13 in series.
- the current sensor 33 detects a current I1 flowing through the switch 13, and has a shunt resistor.
- the current sensor 33 outputs a voltage proportional to the current I1 from the voltage across the shunt resistor.
- the current sensor 33 is not limited to a shunt resistor, and may be a sensor that magnetically detects such as a Hall element.
- the negative electrode 19B of the capacitor 19 is electrically connected to the positive electrode 15A of the capacitor 15 via the switch 17.
- the switch 17 is composed of an FET as in the switch 13.
- the switch 17 is controlled by an external switch control signal SW 2 to turn on and off, and can control a current that flows when the switch 17 is on.
- the capacitor 19 is composed of an electric double layer capacitor like the capacitor 15, but is composed of two electric double layer capacitors connected in series. Since the rated voltage of the electric double layer capacitor is 2.5V, the rated charging voltage of the capacitor 19 is 5V.
- the capacitor voltage Vc1 is 12V. Further, as described above, the rated charging voltage of the capacitor 19 is 5V. Therefore, the total voltage (Vc1 + Vc2) is 17V which is the sum of the capacitor voltage Vc1 and the capacitor voltage Vc2 when the switch 17 is turned on.
- the switch 21 is electrically connected between the connection point 19C where the switch 17 and the negative electrode 19B of the capacitor 19 are connected and the ground 10A. Similarly to the switch 13, the switch 21 is controlled by an external switch control signal SW 3 to turn on and off, and can control the current that flows when the switch is turned on, and is configured by an FET.
- the positive electrode 19A of the capacitor 19 is electrically connected to the positive electrode 11A of the battery 11 through the diode 35.
- the cathode 35A of the diode 35 is connected to the positive electrode 19A of the capacitor 19, and the anode 35B is connected to the positive electrode 11A of the battery 11.
- the total voltage (Vc1 + Vc2) of the capacitor voltages Vc1 and Vc2 becomes 17V when the charging is completed up to the rated voltage, and thus is higher than the battery voltage Vb that is a voltage between the positive electrode 11A and the negative electrode 11B of the battery 11. Get higher. Therefore, the diode 35 prevents the current from flowing backward from the series circuit formed by connecting the capacitors 15 and 19 in series to the battery 11 side.
- a current sensor 37 is connected in series with the diode 35.
- the current sensor 37 has the same configuration as the current sensor 33.
- the end 25A of the starter 25 is electrically connected to the positive electrode 19A of the capacitor 19 via the switch 23.
- An end 25B of the starter 25 is connected to the ground 10A.
- the switch 23 is also formed of an FET as with the switch 13. However, since the switch 23 is not used to charge the capacitors 15 and 19, it is not necessary to limit the flowing current. Therefore, the switch 23 is not limited to a semiconductor switching element such as an FET, and may be a relay.
- the end 25A of the starter 25 is electrically connected to the positive electrode 11A of the battery 11 via the switch 27.
- This path is a power path for driving and operating the starter 25 with only the power of the battery 11 instead of the power stored in the capacitors 15 and 19.
- the switch 27 is also formed of an FET as with the switch 13. However, since the switch 27 is not used for charging the capacitors 15 and 19, it is not necessary to limit the flowing current and may be a relay like the switch 23.
- the switches 13, 17, 21, 23, 27 are electrically connected to the control circuit 29 by signal system wiring.
- the control circuit 29 includes a microcomputer and peripheral circuits such as a memory and controls the entire vehicle 10C.
- components other than the signal wiring necessary for describing the vehicle power supply device 10 in the embodiment are omitted.
- the control circuit 29 outputs switch control signals SW1, SW2, SW3, SW4, and SW5 to the switches 13, 17, 21, 23, and 27, and turns on and off the switches 13, 17, 21, 23, and 27 to perform on / off control. Is doing.
- the control circuit 29 includes an A / D converter and reads various voltages described below.
- the control circuit 29 reads the battery voltage Vb by connecting the positive electrode of the battery 11 and the control circuit 29 by signal system wiring.
- the control circuit 29 reads the current I1 by connecting the output of the current sensor 33 to the control circuit 29 through signal system wiring.
- the control circuit 29 reads the capacitor voltage Vc1 by connecting the positive electrode 15A of the capacitor 15 and the control circuit 29 by signal system wiring.
- the control circuit 29 reads the current I2 by connecting the output of the current sensor 37 to the control circuit 29 through signal system wiring.
- a capacitor voltage Vc2 that is a voltage between the positive electrode 19A and the negative electrode 19B of the capacitor 19 is detected by a voltage detection circuit 39. By connecting the voltage detection circuit 39 to the control circuit 29 via signal wiring, the control circuit 29 reads the capacitor voltage Vc2.
- the control circuit 29 is also electrically connected to the starter 25 by signal system wiring, and controls the drive of the starter 25 by outputting the starter drive signal ST. Specifically, when the control circuit 29 outputs the starter drive signal ST to the starter 25 in a state where a voltage is applied to the ends 25A and 25B of the starter 25, the starter 25 is driven to operate. Even when a voltage is applied to the ends 25A and 25B of the starter 25, if the control circuit 29 does not output the starter drive signal ST to the starter 25, the starter 25 is not driven and does not operate. If no voltage is applied to the ends 25A and 25B of the starter 25, the starter 25 is not driven and does not operate regardless of the starter drive signal ST.
- FIG. 2 is a flowchart showing the operation of the vehicle power supply device 10 for charging the capacitors 15 and 19 and is a subroutine executed when the control circuit 29 separates from the main routine and charges the capacitors 15 and 19.
- FIG. 3 is a flowchart showing the operation of the vehicle power supply device 10 for driving and operating the starter 25, and shows a subroutine for driving and operating the starter 25.
- the control circuit 29 controls the engine 10B according to control data such as the accelerator opening to control the traveling of the vehicle 10C.
- control circuit 29 is executing the main routine, all of the switches 13, 17, 21, 23, and 27 are turned off. That is, at the start in the flowcharts shown in FIGS.
- a specific case in which the subroutine shown in FIG. 2 is executed is when, for example, the vehicle 10C is unlocked and the door is opened at the start of use of the vehicle 10C. Further, the stage in use of the vehicle 10C is, for example, a case other than when the starter 25 is driven after the idling stop. In the embodiment, since it is not possible to predict when the idling stop will be started next, the control circuit 29 ensures that the starter 25 can be driven with only the electric power stored in the capacitors 15 and 19 instead of the electric power from the battery 11. Executes the subroutine shown in FIG. 2 immediately after the starter 25 is driven after the idling stop. Thereby, the capacitors 15 and 19 can be charged quickly.
- the control circuit 29 first turns off the starter flag (step S11).
- the starter flag is turned on when a starter driving request for requesting driving of the starter 25 is generated by the interrupt routine, and is configured using a part of the memory.
- the interruption routine is executed when the driver starts the engine 10B or when the idling stop is completed.
- the interrupt routine performs the operation of returning to the interrupt destination after turning on the starter flag.
- the control circuit 29 clears the starter flag turned on by the previous interrupt by turning off the starter flag in step S11.
- control circuit 29 reads the capacitor voltages Vc1 and Vc2 and the battery voltage Vb (step S13).
- the control circuit 29 connects the capacitors 15 and 19 in series and charges them with a predetermined current I2k in order to charge the capacitors 15 and 19 quickly.
- the difference between the total voltage (Vc1 + Vc2) of the capacitors 15 and 19 and the battery voltage Vb is reduced, so that the charging loss in the switch 17 can be reduced. Therefore, since the charging current can be increased accordingly, the charging period of the capacitors 15 and 19 can be shortened.
- step S15 when the total voltage (Vc1 + Vc2) is lower than the battery voltage Vb (Yes in step S15), the control circuit 29 next determines the state of the starter flag (step S17). Since the starter flag is turned on by an interrupt, it cannot be predicted when it is turned on during execution of the subroutine of FIG. Therefore, in the subroutine of FIG. 2, the control circuit 29 appropriately monitors the state of the starter flag.
- step S17 If the starter flag is on (Yes in step S17), the control circuit 29 jumps to step S41 shown in FIG. 3 to drive the starter 25 and start the engine 10B.
- step S17 if the starter flag is off (No in step S17), the control circuit 29 turns off the switches 13, 21, 23, and 27 (step S19). That is, the control circuit 29 prepares to connect the capacitors 15 and 19 in series by turning off the switches 13 and 21. Since the starter flag is off (No in step S17), the starter 25 is not driven. Therefore, the control circuit 29 turns off the switches 23 and 27.
- the control circuit 29 reads the current I2 by the current sensor 37, turns on the switch 17 so that the current I2 becomes the predetermined current I2k, and performs control in the active region of the FET constituting the switch 17 (step S21). That is, by changing the gate voltage of the FET constituting the switch 17, the series circuit of the capacitors 15 and 19 is charged with a constant current with the predetermined current I2k.
- the predetermined current I2k is determined in advance and stored in the memory as a current value that can charge the capacitors 15 and 19 as quickly as possible without causing a burden on the battery 11, that is, not significantly affecting the life of the battery 11. Yes.
- the vehicle power supply device 10 Since the predetermined current I2k varies depending on the combined capacity of the capacitors 15 and 19 in series, the upper limit value of the current that can be passed through the switch 17, the allowable charging time, and the like, in addition to the burden on the battery 11, the vehicle power supply device 10 It is determined appropriately according to the specifications.
- step S21 the control circuit 29 thereafter repeats the operations of steps S13, S15, S17, S19, and S21 until the total voltage (Vc1 + Vc2) of the capacitor voltages Vc1 and Vc2 reaches the battery voltage Vb. Charging of the capacitors 15 and 19 connected in series is continued.
- step S15 When the total voltage (Vc1 + Vc2) is equal to or higher than the battery voltage Vb in step S15 (No in step S15), the control circuit 29 turns off all the switches 13, 17, 21, 23, and 27 (step S23). Thereby, when the capacitors 15 and 19 are charged, the charging is temporarily stopped.
- step S25 determines the state of the starter flag. This operation is the same as step S17 described above. If the starter flag is on in step S25 (Yes in step S25), the process jumps to step S41 shown in FIG. On the other hand, if the starter flag is off in step S25 (No in step S25), the control circuit 29 is in the active region of the FET constituting the switch 13 so that the current I1 read by the current sensor 33 becomes the predetermined current I1k. At the same time, the current is limited by controlling the active region of the FET constituting the switch 21 so that the current I2 becomes the predetermined current I2k (step S29).
- the control circuit 29 connects the capacitor 15 and the capacitor 19 in parallel in step S29, and charges the capacitors 15 and 19 with the predetermined currents I1k and I2k, respectively.
- the switches 13 and 21 are controlled.
- the predetermined current I1k is determined in the same manner as the predetermined current I2k in step S21. Accordingly, in step S29, the predetermined currents I1k and I2k have the same value.
- step S29 the switch 21 is controlled so that the current I2 becomes the predetermined current I2k in step S21.
- the capacitor 19 is turned on by the predetermined current I2k.
- a predetermined current I3k smaller than the predetermined current I2k may be defined. That is, when the difference between the battery voltage Vb and the capacitor voltage Vc2 is larger than a predetermined value, the current I2 becomes the predetermined current I3k, and when the difference between the battery voltage Vb and the capacitor voltage Vc2 is less than the predetermined value, the current I2 is
- the control circuit 29 may control the switch 21 so that the predetermined current I2k is obtained.
- the predetermined currents I1k and I2k have the same value, but may be different values as long as the burden on the battery 11 does not increase.
- the predetermined currents I1k, I2k, and I3k are appropriately determined according to the specifications of the vehicle power supply device 10.
- the control circuit 29 charges the capacitors 15 and 19 as follows. That is, when charging the capacitors 15 and 19, if the total voltage (Vc1 + Vc2) is lower than the battery voltage Vb, the control circuit 29 connects the capacitors 15 and 19 in series until the total voltage (Vc1 + Vc2) reaches the battery voltage Vb.
- the switches 13, 17, 21, 23, and 27 are controlled as described above. Specifically, at this time, the control circuit 29 turns off the switches 13, 21, 23, and 27 and turns on the switch 17 to control the current flowing through the switch 17.
- the control circuit 29 controls the switches 13, 17, 21, 23, and 27. Specifically, at this time, the control circuit 29 controls the current flowing through the switches 13 and 21 by turning off the switches 17, 23, and 27 and turning on the switches 13 and 21.
- the difference between the total voltage (Vc1 + Vc2) and the battery voltage Vb is reduced by charging the capacitors 15 and 19 connected in series. Therefore, the charging current can be increased, the period until the total voltage (Vc1 + Vc2) reaches the battery voltage Vb can be shortened, and the charging period as a whole can be shortened.
- step S29 the capacitor 15 is charged with the predetermined current I1k, and the capacitor 19 is charged with the predetermined current I2k, whereby the capacitors 15 and 19 are charged to the rated charging voltage. Since the starter flag may be turned on while the capacitors 15 and 19 are being charged, the control circuit 29 determines the state of the starter flag even after step S29 (step S31). If the starter flag is on in step S31, the process jumps to step S41 shown in FIG. On the other hand, if the starter flag is off in step S31 (No in step S31), the control circuit 29 first reads the capacitor voltage Vc2 to determine the completion of charging (step S33), and sets the capacitor voltage Vc2 and the predetermined voltage Vc2k. Are compared (step S35).
- Step S35 if the capacitor voltage Vc2 becomes higher than the predetermined voltage Vc2k in Step S35 (Yes in Step S35), the charging of the capacitor 19 is completed, and the control circuit 29 turns off the switches 13 and 21 (Step S37). Thereby, charging of the capacitors 15 and 19 is stopped.
- control circuit 29 determines the state of the starter flag (step S39). If the starter flag is not on (No in step S39), the subroutine shown in FIG. 2 is terminated and the process returns to the main routine. Since the control circuit 29 monitors the state of the starter flag in the main routine as well as step S39, if the starter flag is turned on even after the charging is completed and the subroutine shown in FIG. The control circuit 29 executes the subroutine shown in FIG.
- step S39 if the starter flag is on in step S39 (Yes in step S39), the control circuit 29 jumps to step S41 shown in FIG.
- step S35 shown in FIG. 2 the charging of the capacitor 19 is completed, and the charging of the capacitor 15 is also completed for the following reason.
- step S15 when the total voltage (Vc1 + Vc2) is lower than the battery voltage Vb, the control circuit 29 charges the capacitors 15 and 19 connected in series.
- Q1 0.7 ⁇ C.
- the charge amount Q2 of the capacitor 19 is larger than the charge amount Q1 of the capacitor 15.
- the capacitor 19 has a longer period until the charging is completed than the capacitor 15. Therefore, in the vehicle power supply device 10 according to the embodiment, the charging of the capacitor 15 is already completed when the charging of the capacitor 19 is completed.
- the control circuit 29 can determine that both of the capacitor voltages Vc1 and Vc2 of the capacitors 15 and 19 have reached the rated charging voltage by determining only the completion of charging of the capacitor 19.
- the completion of the charging of the capacitors 15 and 19 can be determined by the above-described operation of the embodiment.
- the capacitor 15 may take longer to complete the charge than the capacitor 19. In this case, it is necessary to monitor the capacitor voltage Vc1 of the capacitor 15 to determine the completion of charging, and to monitor the capacitor voltage Vc2 so that the capacitor 19 is not overvoltaged.
- the control circuit 29 monitors both of the capacitor voltages Vc1 and Vc2 to determine the completion of charging of the capacitors 15 and 19. Then, when charging of one of the capacitors 15 and 19 is completed, the control circuit 29 stops charging the capacitor and continues charging only the other capacitor.
- control circuit 29 executes the flowchart of FIG. 3 by calling from the main routine or jumping from the subroutine of FIG.
- control circuit 29 reads capacitor voltages Vc1 and Vc2 (step S41).
- the control circuit 29 compares the total voltage (Vc1 + Vc2) with the predetermined total voltage Vck (step S43).
- step S43 When the total voltage (Vc1 + Vc2) is lower than the predetermined total voltage Vck (Yes in step S43), since the charging of the capacitors 15 and 19 is not completed, the power accumulated in the capacitors 15 and 19 is sufficiently driven. It may not be possible. If the total voltage (Vc1 + Vc2) is lower than the predetermined total voltage Vck in step S43 (Yes in step S43), the control circuit 29 first turns off all the switches 13, 17, 21, and 23 (step S45), and then switches 27 Only ON is set (step S47). Thereby, power is not supplied from the capacitors 15 and 19 to the starter 25, but only the power of the battery 11 is supplied to drive the starter 25 (step S59).
- step S49 the control circuit 29 drives the starter 25 this time at the start of use of the vehicle 10C, that is, at the cold start. It is determined whether or not there is (step S49). If the vehicle 10C is not cold-started in step S49 (No in step S49), the vehicle 10C is in use, and has already stopped by idling stop after the engine 10B has been started. Therefore, the engine 10B and the accessories (various hydraulic pumps, air conditioner compressors, etc.) attached to the engine 10B are warmed up, and the torque of the starter 25 necessary for restarting the engine 10B is from the cold start. Is small. Accordingly, the starter 25 can be driven by a series circuit configured by connecting the capacitors 15 and 19 in series.
- step S49 the control circuit 29 turns off the switches 13, 21, 27 (step S51), and then turns on the switches 17, 23 ( Step S53).
- the capacitors 15 and 19 are connected to the starter 25 in a state of being connected in series.
- the switches 13 and 27 are off.
- step S59 the starter 25 by the electric power stored in the series circuit composed of the capacitors 15 and 19 connected in series is driven to operate.
- step S49 if the vehicle 10C is cold-started in step S49 (Yes in step S49), the engine 10B and the auxiliary machinery are cooled, and the torque of the starter 25 for driving them is compared with the case where it is warmed up. growing.
- step S49 In order to drive the starter 25 that needs to output a large torque, if the vehicle 10C is cold started in step S49 (Yes in step S49), the control circuit 29 turns off the switches 21 and 27 (step S55). Thereafter, the switches 13, 17, and 23 are turned on (step S57). Thus, the battery 11 and the capacitor 15 are connected to each other in parallel by the switch 13 to form a parallel circuit. Since the switch 17 is on and the switch 21 is off, the capacitor 19 is connected in series to a parallel circuit composed of the battery 11 and the capacitor 15 connected in parallel. Since the switch 23 is on and the switch 27 is off, the parallel circuit of the battery 11 and the capacitor 15 is connected to the starter 25 via the capacitor 19.
- the control circuit 29 drives and controls the starter 25 by outputting the starter drive signal ST to the starter 25 (step S59).
- the starter 25 can be driven by supplying power from an optimal power source in accordance with the state of charge of the capacitors 15 and 19 and whether or not the vehicle 10C is cold-started.
- the starter 25 is driven only by the power of the battery 11 only when the total voltage (Vc1 + Vc2) is smaller than the predetermined total voltage Vck (Yes in step S43). In other cases, that is, the total voltage (Vc1 + Vc2) is the predetermined total voltage.
- the starter 25 When the voltage is Vck or higher (No in step S43), the starter 25 is driven together with the power of the capacitors 11 and 19 together with the power of the battery 11, so that the burden on the battery 11 is reduced.
- the starter 25 when the starter 25 is driven only by the power of the capacitors 15 and 19 instead of the power of the battery 11, the power of the battery 11 is hardly used, so that the effect of reducing the burden on the battery 11 is great.
- the capacitor 19 is connected in series to a parallel circuit composed of the battery 11 and the capacitor 15 connected in parallel with each other, the power from the capacitor 15 having an internal resistance smaller than that of the battery 11 is supplied with priority over the battery 11. Thus, the current flowing from the battery 11 is reduced. From this point of view as well, the burden on the battery 11 can be reduced, and therefore the life of the battery 11 can be extended.
- control circuit 29 turns off the switches 13, 17, 21, 23, and 27 (step S61), and FIG. The subroutine is finished and the process returns to the main routine.
- the main routine again executes the subroutine of FIG. 2 to charge the capacitors 15 and 19 immediately after finishing the subroutine of FIG. By repeating such an operation, the burden on the battery 11 can be reduced even when idling is stopped.
- the subroutine of FIG. 2 when the subroutine of FIG. 3 is completed, the subroutine of FIG. 2 is immediately executed to charge the capacitors 15 and 19.
- the present invention is not limited to this operation, and the starter 25 is used.
- the capacitors 15 and 19 may be charged.
- the control circuit 29 may control the switches 13, 17, 21, 23, and 27 to charge the capacitors 15 and 19 with regenerative power generated by the generator 31 when the vehicle 10 ⁇ / b> C is decelerated.
- the control circuit 29 detects the generation of regenerative power due to the deceleration of the vehicle 10C, the subroutine of FIG. 2 is executed.
- the regenerative power can be effectively used, and the fuel efficiency of the vehicle 10C can be improved together with the idling stop.
- the generator 31 when regenerative power is generated, the generator 31 generates a voltage higher than 12V, which is 14.5V. Therefore, when the capacitors 15 and 19 are connected in series, the electric double layer capacitor does not reach an overvoltage. However, when the capacitors 15 and 19 are connected in parallel with each other to be charged, the capacitor 15 The control circuit 29 needs to monitor the capacitor voltage Vc1 so as not to reach an overvoltage. Not only when regenerative power is generated, it is necessary to monitor overvoltage when charging the power of the generator 31 to the capacitors 15 and 19.
- FIG. 4 is a flowchart showing the operation of the vehicle power supply device 10 when the use of the vehicle 10C is finished.
- the control circuit 29 executes the flowchart shown in FIG. In the flowchart shown in FIG. 4, all the switches 13, 17, 21, 23, and 27 are off at the start.
- the control circuit 29 reads the capacitor voltages Vc1, Vc2 and the battery voltage Vb (step S91), and compares the total voltage (Vc1 + Vc2) with the battery voltage Vb (step S92). If the total voltage (Vc1 + Vc2) is higher than the battery voltage Vb in step S92 (Yes in step S92), the control circuit 29 switches the switches 13, 17, 21, and so on to charge the battery 11 with the electric power stored in the capacitors 15 and 19. 23 and 27 are controlled.
- Step S92 the control circuit 29 turns off the switches 13 and 21 (Step S93), and then switches 17, 23, 27 is turned on (step S94).
- the switches 17, 23, 27 are turned on, a voltage is applied between the ends 25A, 25B of the starter 25.
- the control circuit 29 does not output the starter drive signal ST, so the starter 25 is driven. Does not work.
- the electric power stored in the capacitors 15 and 19 is supplied to the battery 11 via the switches 23 and 27, and the battery 11 can be charged.
- the control circuit 29 reads the capacitor voltages Vc1, Vc2 and the battery voltage Vb in step S91, and compares the total voltage (Vc1 + Vc2) with the battery voltage Vb in step S92. In this way, the battery 11 is charged by repeating the steps S91 to S94, and the total voltage (Vc1 + Vc2) decreases.
- the control circuit 29 turns off all the switches 13, 17, 21, 23, and 27 (step S95), and the power supply from the capacitors 15 and 19 to the battery 11 is stopped. Thereafter, the process returns to the main routine, and the control of the vehicle 10C is finished.
- the control circuit 29 reads the capacitor voltages Vc1, Vc2 and the battery voltage Vb in step S91. If the total voltage (Vc1 + Vc2) is equal to or lower than the battery voltage Vb in step S92 (No in step S92), the control circuit 29 turns off all the switches 13, 17, 21, 23, 27 (step S95), and enters the main routine. Return to complete the control of the vehicle 10C.
- the vehicle power supply device 10 can store the power stored in the capacitors 15 and 19 in the battery 11 without consuming wastefully by self-discharge. Furthermore, since the capacitor voltages Vc1 and Vc2 of the capacitors 15 and 19 can be lowered, the lifetime of both can be extended. At the same time, since the total voltage (Vc1 + Vc2) of the capacitors 15 and 19 is applied to the battery 11, the battery voltage Vb can be kept high, and the life of the battery 11 can be extended.
- the vehicle power supply device 10 can suppress the frequency of driving the starter 25 with only the battery 11 and reduce the current flowing from the battery 11 by the capacitors 15 and 19. Therefore, the vehicle power supply device 10 capable of extending the life of the battery 11 can be realized.
- the control circuit 29 charges the capacitors 15 and 19, if the total voltage (Vc1 + Vc2) is lower than the battery voltage Vb, the capacitors 15 and 19 are connected in series and charged, and the total voltage (Vc1 + Vc2) is charged. ) Becomes equal to or higher than the battery voltage Vb, the capacitors 15 and 19 are electrically connected in parallel to be charged. This is not limited to such control. If the total voltage (Vc1 + Vc2) is lower than the battery voltage Vb, the capacitors 15 and 19 may be electrically connected in parallel from the beginning and charged. However, in this case, the control circuit 29 needs to monitor so that both the capacitor voltages Vc1 and Vc2 of the capacitors 15 and 19 do not become overvoltage.
- the turn-on and turn-off of the switches 13, 17, 21, 23, and 27 are as shown in the flowcharts of FIGS. 2 and 3 in order to avoid short circuit of the battery 11 and the capacitor 15. There is a need.
- the control circuit 29 charges the battery 11 with the electric power stored in the capacitors 15 and 19. This is not limited to such an operation.
- the vehicular power supply apparatus 10 uses the capacitor 15 to extend the life of the capacitors 15 and 19. , 19 may be provided.
- FIG. 5 is a flowchart showing an operation during idling stop of the vehicle power supply device 10 according to the embodiment.
- the control circuit 29 controls the switch 13 to discharge the capacitor 15 if the capacitor voltage Vc1 is higher than the battery voltage Vb while the vehicle 10C is idling stopped, and discharges the capacitor 15 to discharge the capacitor.
- the switch 13 is turned on.
- the switch 13 is controlled to discharge the capacitor 15 or is on. Inrush current flows from both the battery 11 and the capacitor 15. Accordingly, since the current flowing from the battery 11 can be suppressed, the burden on the battery 11 is reduced correspondingly, and the life can be extended.
- FIGS. 5 is a subroutine executed when idling is stopped from the main routine of the microcomputer built in the control circuit 29.
- the control circuit 29 shifts from the main routine to the subroutine of FIG. 5 and executes the subroutine of FIG. At this time, since the idling stop is started, the starter 25 is not operated. Accordingly, all the switches 13, 17, 21, 23, and 27 are in the OFF state by steps S23 and S37 shown in FIG.
- control circuit 29 first reads the capacitor voltage Vc1 and the battery voltage Vb (step S71).
- the control circuit 29 compares the capacitor voltage Vc1 with the battery voltage Vb (step S73). If the capacitor voltage Vc1 is higher than the battery voltage Vb in step S73 (Yes in step S73), when the switch 13 is turned on to discharge the capacitor 15 in this state, the difference is caused by the difference between the capacitor voltage Vc1 and the battery voltage Vb. Inrush current flows from the capacitor 15 to the battery 11. As a result, an overcurrent flows through the switch 13 and the temperature rises excessively, which may increase the load on the switch 13. In vehicle power supply device 10 according to the embodiment, if capacitor voltage Vc1 is higher than battery voltage Vb in step S73 (Yes in step S73), control circuit 29 discharges capacitor 15.
- the control circuit 29 controls the switch 13 so that the current I1 flowing through the current sensor 33 becomes the predetermined current I1k (Ste S75). As a result, a predetermined current I1k flows from the capacitor 15 and the capacitor 15 is discharged. That is, the control circuit 29 controls the switch 13 so that the capacitor 15 is discharged at a constant current. As a result, the capacitor 15 can be discharged without imposing a burden on the switch 13.
- the current discharged from the capacitor 15 is supplied to the battery 11 and the load 10D.
- the capacitor voltage Vc1 is higher than the battery voltage Vb during idling stop, power is supplied from the capacitor 15 to the load 10D.
- the discharge current from the capacitor 15 in step S75 is discharged at a constant current as the predetermined current I1k in the embodiment.
- the discharge current in step S75 may be determined with a current value larger or smaller than the predetermined current I1k as the default value.
- the discharge current is set to a current value larger than the predetermined current I1k, the capacitor 15 can be discharged quickly.
- the current I1 flowing through the switch 13 increases, it is necessary to select the switch 13 corresponding to the current.
- the discharge current may be determined in advance based on the required discharge period and the characteristics of the switch 13.
- the discharge current from the capacitor 15 is a constant current, it is not limited to this. That is, since the current flowing through the switch 13 is constant in constant current discharge, the burden can be suppressed. However, if the difference between the capacitor voltage Vc1 and the battery voltage Vb is large, the discharge period becomes longer, and the difference is reduced. If it is smaller, the discharge period becomes shorter. If the difference in the discharge period is negligibly small compared to the average period of idling stop, the capacitor 15 may be discharged at a constant current regardless of the difference between the capacitor voltage Vc1 and the battery voltage Vb. However, when the capacitance of the capacitor 15 is large and a large difference occurs in the discharge period, there is a possibility that the operation after the completion of discharge described later cannot be performed. Therefore, when it is desired to make the discharge period constant, the control circuit 29 may control the discharge current to change according to the difference between the capacitor voltage Vc1 and the battery voltage Vb, for example.
- control circuit 29 determines the state of the starter flag (step S77). If the starter flag is not on in step S77 (No in step S77), the control circuit 29 performs steps S71, S73, S75, and S77 until the capacitor voltage Vc1 becomes equal to or lower than the battery voltage Vb in step S73. Repeat the operation.
- step S77 if the starter flag is on in step S77 (Yes in step S77), the control circuit 29 jumps to the subroutine shown in FIG. 3 in order to operate the starter 25. If the starter flag is turned on at this time, the starter 25 is operated while the capacitor 15 is being discharged. Since the operation at the time of driving the starter 25 after idling stop is after step S45 in FIG. 3 or after step S51, the switch 13 is turned off in any case. Therefore, when the starter 25 is driven, the discharge from the capacitor 15 to the battery 11 is stopped by executing the subroutine of FIG.
- Step S73 if the capacitor voltage Vc1 is equal to or lower than the battery voltage Vb in Step S73 shown in FIG. 5 (No in Step S73), the capacitor voltage Vc1 has reached the battery voltage Vb due to the discharge of the capacitor 15. Accordingly, since there is almost no difference between the capacitor voltage Vc1 and the battery voltage Vb, the inrush current hardly flows even when the switch 13 is turned on. Therefore, the control circuit 29 turns on the switch 13 (step S79). Thereby, the battery 11 and the capacitor 15 are connected in parallel after the start of the idling stop.
- the parallel circuit of the battery 11 and the capacitor 15 is connected to the load 10D during idling stop.
- an instantaneous inrush current flows to the load 10D.
- the battery voltage Vb and the capacitor voltage Vc1 temporarily cause a voltage drop according to the internal resistance of the battery 11 and the capacitor 15.
- the width of the voltage drop due to the inrush current is reduced as compared with the case where power is supplied only from the battery 11 to the load 10D. Therefore, the current taken out from the battery 11 is suppressed. As a result, the load on the battery 11 is reduced, and the life can be extended.
- control circuit 29 determines the state of the starter flag (step S81). If the starter flag is off (No in step S81), the control circuit 29 waits until the starter flag is turned on in step S81. When the starter flag is turned on in step S81 (Yes in step S81), the process jumps to step S41 of the subroutine of FIG. 3 to drive the starter 25. Also in this case, the switch 13 is turned off in step S45 or step S51 shown in FIG. 3 as in the case of Yes in step S77, so that the parallel connection between the battery 11 and the capacitor 15 is released when the starter 25 is driven. The
- step S81 the process waits until the starter flag is turned on. However, when the driver turns off the ignition switch in this state, the control circuit 29 forcibly ends the operation of FIG. .
- the present invention is not limited to this, and other large-capacity capacitors such as electrochemical capacitors may be used.
- the vehicular power supply apparatus according to the present invention is useful as a vehicular power supply apparatus in a vehicle with an idling stop function, since the burden on the battery is reduced and the life of the vehicular power supply apparatus can be extended.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
11 バッテリ
13 スイッチ(第1のスイッチ)
15 キャパシタ(第1のキャパシタ)
17 スイッチ(第2のスイッチ)
19 キャパシタ(第2のキャパシタ)
19C 接続点
21 スイッチ(第3のスイッチ)
23 スイッチ(第4のスイッチ)
25 スタータ
27 スイッチ(第5のスイッチ)
29 制御回路
35 ダイオード(半導体スイッチング素子)
Claims (7)
- エンジンと、前記エンジンを起動するスタータと、前記スタータを駆動するバッテリとを搭載する車両に設けられるように構成された車両用電源装置であって、
前記バッテリの正極に接続されるように構成された第1のスイッチと、
前記バッテリの前記正極と前記第1のスイッチを介して接続されるように構成された正極と、グランドに接続された負極とを有する第1のキャパシタと、
前記第1のキャパシタの前記正極に接続された第2のスイッチと、
正極と、前記第1のキャパシタの前記正極と前記第2のスイッチを介して接続されて前記第2のスイッチと接続点で接続された負極とを有する第2のキャパシタと、
前記第2のスイッチと前記第2のキャパシタの前記負極とが接続された前記接続点と前記グランドとの間に接続された第3のスイッチと、
前記第2のキャパシタの前記正極に接続された第4のスイッチと、
前記バッテリの前記正極と前記スタータとの間に接続されるように構成された第5のスイッチと、
前記第2のキャパシタの前記正極に接続され、前記バッテリの前記正極と前記第2のキャパシタの前記正極との間を断続するように構成された半導体スイッチング素子と、
前記第1のスイッチと前記第2のスイッチと前記第3のスイッチと前記第4のスイッチと前記第5のスイッチとを制御する制御回路と、
を備え、
前記第2のキャパシタの前記正極は前記第4のスイッチを介して前記スタータに接続されるように構成されており、
前記制御回路は、
前記スタータを駆動しないときに前記第1のキャパシタと前記第2のキャパシタを充電するように、前記第1のスイッチと前記第2のスイッチと前記第3のスイッチと前記第4のスイッチと前記第5のスイッチを制御し、
前記スタータを駆動する際に、前記第1のキャパシタの前記正極と前記負極との間の電圧である第1のキャパシタ電圧と前記第2のキャパシタの前記正極と前記負極との間の電圧である第2のキャパシタ電圧との合計電圧が、既定合計電圧より小さければ、前記バッテリの電力を前記スタータに供給するように、前記第1のスイッチと前記第2のスイッチと前記第3のスイッチと前記第4のスイッチと前記第5のスイッチを制御し、
前記スタータを駆動する際に、前記合計電圧が前記既定合計電圧以上であれば、前記車両が使用開始時の場合は、前記バッテリと前記第1のキャパシタとで並列回路を構成し、前記並列回路と前記第2のキャパシタが直列に接続されるように、前記第1のスイッチと前記第2のスイッチと前記第3のスイッチと前記第4のスイッチと前記第5のスイッチを制御して前記スタータに電力を供給し、
前記スタータを駆動する際に、前記合計電圧が前記既定合計電圧以上であれば、前記車両が使用中の場合は、前記スタータから前記バッテリを切り離し、前記第1のキャパシタと前記第2のキャパシタが直列に接続されるように、前記第1のスイッチと前記第2のスイッチと前記第3のスイッチと前記第4のスイッチと前記第5のスイッチを制御して前記スタータに電力を供給する、
ように動作する、車両用電源装置。 - 前記制御回路は、前記車両の減速時に発生する回生電力を前記第1のキャパシタと前記第2のキャパシタに充電するように、前記第1のスイッチと前記第2のスイッチと前記第3のスイッチと前記第4のスイッチと前記第5のスイッチを制御するように動作する、請求項1に記載の車両用電源装置。
- 前記制御回路は、
前記第1のキャパシタと前記第2のキャパシタを充電する際に、前記合計電圧が前記バッテリの電圧であるバッテリ電圧より低ければ、前記合計電圧が前記バッテリ電圧に至るまで前記第1とキャパシタと前記第2のキャパシタが直列に接続されるように、前記第1のスイッチと前記第2のスイッチ、第3のスイッチと前記第4のスイッチと前記第5のスイッチを制御し、
前記第1のキャパシタと前記第2のキャパシタを充電する際に、前記合計電圧が前記バッテリ電圧以上であれば、前記第1のキャパシタと前記第2のキャパシタが並列に接続されるように、前記第1のスイッチと前記第2のスイッチと前記第3のスイッチと前記第4のスイッチと前記第5のスイッチを制御する、
ように動作する、請求項1に記載の車両用電源装置。 - 前記制御回路は、前記車両の使用終了時に、前記合計電圧がバッテリ電圧より高ければ、前記第1のキャパシタと前記第2のキャパシタの電力を前記バッテリに充電するように、前記第1のスイッチと前記第2のスイッチと前記第3のスイッチと前記第4のスイッチと前記第5のスイッチを制御するように動作する、請求項1に記載の車両用電源装置。
- 前記半導体スイッチング素子は、前記バッテリの前記正極に接続されるように構成されたアノードと、前記第2のキャパシタの前記正極に接続されたカソードとを有するダイオードである、請求項1に記載の車両用電源装置。
- 前記制御回路は、
前記車両のアイドリングストップ中に、前記第1のキャパシタ電圧が前記バッテリ電圧より高ければ、前記第1のキャパシタを放電するように前記第1のスイッチを制御し、
前記車両のアイドリングストップ中に、前記第1のキャパシタ電圧が前記バッテリ電圧であれば、前記第1のスイッチをオンにする、
ように動作する、請求項1に記載の車両用電源装置。 - 前記制御回路は、前記車両のアイドリングストップ中に、前記第1のキャパシタ電圧が前記バッテリ電圧より高ければ、前記第1のキャパシタを定電流放電するように前記第1のスイッチを制御するように動作する、請求項6に記載の車両用電源装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/128,410 US9415732B2 (en) | 2011-07-22 | 2012-07-04 | Vehicle power unit |
CN201280036299.5A CN103718419B (zh) | 2011-07-22 | 2012-07-04 | 车辆用电源装置 |
EP12817970.2A EP2736146A1 (en) | 2011-07-22 | 2012-07-04 | Vehicle power unit |
JP2013525560A JP6060391B2 (ja) | 2011-07-22 | 2012-07-04 | 車両用電源装置 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011160584 | 2011-07-22 | ||
JP2011-160584 | 2011-07-22 | ||
JP2011-182385 | 2011-08-24 | ||
JP2011182385 | 2011-08-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013014866A1 true WO2013014866A1 (ja) | 2013-01-31 |
Family
ID=47600744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/004322 WO2013014866A1 (ja) | 2011-07-22 | 2012-07-04 | 車両用電源装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9415732B2 (ja) |
EP (1) | EP2736146A1 (ja) |
JP (1) | JP6060391B2 (ja) |
CN (1) | CN103718419B (ja) |
WO (1) | WO2013014866A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016091523A (ja) * | 2014-11-11 | 2016-05-23 | レノボ・シンガポール・プライベート・リミテッド | バックアップ・モジュールの容量を拡大する方法、nvdimmシステムおよび情報処理装置 |
JP2017512698A (ja) * | 2014-03-27 | 2017-05-25 | サフラン ヘリコプター エンジンズ | タービンエンジンの急速再活性化の方法及びシステム |
JP2019180155A (ja) * | 2018-03-30 | 2019-10-17 | スズキ株式会社 | 車両用電源装置 |
WO2021117738A1 (ja) * | 2019-12-13 | 2021-06-17 | ヤマハ発動機株式会社 | ストラドルドビークル |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101397023B1 (ko) * | 2012-03-23 | 2014-05-20 | 삼성에스디아이 주식회사 | 배터리 팩 및 배터리 팩의 제어 방법 |
EP3006290B1 (en) * | 2013-05-29 | 2017-07-19 | Nissan Motor Co., Ltd | Control device for plug-in hybrid vehicle |
JP6384412B2 (ja) * | 2014-07-10 | 2018-09-05 | 株式会社デンソー | 電源装置 |
JP6304500B2 (ja) * | 2015-07-31 | 2018-04-04 | 本田技研工業株式会社 | 車両用電源装置 |
AT517714B1 (de) * | 2015-12-17 | 2017-04-15 | Avl List Gmbh | Schaltungsanordnung zur Signaleinprägung eines elektrischen Signals in eine elektrochemische Energieliefervorrichtung |
WO2017180478A1 (en) * | 2016-04-15 | 2017-10-19 | Maxwell Technologies, Inc. | Parallel string voltage support |
JP6802382B2 (ja) * | 2017-08-10 | 2020-12-16 | 本田技研工業株式会社 | 制御システム、制御方法、およびプログラム |
CN107380102A (zh) * | 2017-08-30 | 2017-11-24 | 重庆小金人电子商务有限公司 | 一种移动维修车自动充电供电系统 |
CN108482130A (zh) * | 2018-03-27 | 2018-09-04 | 吉利汽车研究院(宁波)有限公司 | 能量回收控制装置、车辆能量回收系统及汽车 |
US11506167B1 (en) * | 2021-08-09 | 2022-11-22 | GM Global Technology Operations LLC | Ultracapacitor to augment starter system during starting of vehicle engine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05300660A (ja) * | 1992-04-16 | 1993-11-12 | Mitsubishi Motors Corp | 自動車用電源装置 |
JP2006029142A (ja) * | 2004-07-13 | 2006-02-02 | Toyota Motor Corp | 車両のエンジン始動制御装置 |
JP2006526379A (ja) * | 2003-05-12 | 2006-11-16 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 自動車内の電圧供給装置 |
JP2010279148A (ja) * | 2009-05-28 | 2010-12-09 | Nissan Motor Co Ltd | キャパシタ充電制御装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0437873U (ja) * | 1990-07-24 | 1992-03-31 | ||
JP2004282800A (ja) | 2003-03-12 | 2004-10-07 | Nissan Motor Co Ltd | 車両用電源制御装置 |
JP3885771B2 (ja) | 2003-06-24 | 2007-02-28 | 株式会社デンソー | 電源システム |
JP4387391B2 (ja) | 2006-09-08 | 2009-12-16 | パナソニック株式会社 | 蓄電装置 |
JP2008289270A (ja) * | 2007-05-17 | 2008-11-27 | Panasonic Corp | 蓄電装置 |
JP2008312293A (ja) * | 2007-06-12 | 2008-12-25 | Toyota Motor Corp | 車両用電源装置 |
DE102009024374A1 (de) * | 2009-06-09 | 2010-12-16 | Audi Ag | Bordnetz für ein Kraftfahrzeug und Verfahren zum Betreiben eines elektrischen Verbrauchers |
JP5521962B2 (ja) * | 2010-10-05 | 2014-06-18 | 株式会社オートネットワーク技術研究所 | 車両用電源装置 |
-
2012
- 2012-07-04 CN CN201280036299.5A patent/CN103718419B/zh active Active
- 2012-07-04 US US14/128,410 patent/US9415732B2/en active Active
- 2012-07-04 JP JP2013525560A patent/JP6060391B2/ja active Active
- 2012-07-04 WO PCT/JP2012/004322 patent/WO2013014866A1/ja active Application Filing
- 2012-07-04 EP EP12817970.2A patent/EP2736146A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05300660A (ja) * | 1992-04-16 | 1993-11-12 | Mitsubishi Motors Corp | 自動車用電源装置 |
JP2006526379A (ja) * | 2003-05-12 | 2006-11-16 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 自動車内の電圧供給装置 |
JP2006029142A (ja) * | 2004-07-13 | 2006-02-02 | Toyota Motor Corp | 車両のエンジン始動制御装置 |
JP2010279148A (ja) * | 2009-05-28 | 2010-12-09 | Nissan Motor Co Ltd | キャパシタ充電制御装置 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017512698A (ja) * | 2014-03-27 | 2017-05-25 | サフラン ヘリコプター エンジンズ | タービンエンジンの急速再活性化の方法及びシステム |
JP2016091523A (ja) * | 2014-11-11 | 2016-05-23 | レノボ・シンガポール・プライベート・リミテッド | バックアップ・モジュールの容量を拡大する方法、nvdimmシステムおよび情報処理装置 |
JP2019180155A (ja) * | 2018-03-30 | 2019-10-17 | スズキ株式会社 | 車両用電源装置 |
JP7020247B2 (ja) | 2018-03-30 | 2022-02-16 | スズキ株式会社 | 車両用電源装置 |
WO2021117738A1 (ja) * | 2019-12-13 | 2021-06-17 | ヤマハ発動機株式会社 | ストラドルドビークル |
TWI764426B (zh) * | 2019-12-13 | 2022-05-11 | 日商山葉發動機股份有限公司 | 跨坐型車輛 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2013014866A1 (ja) | 2015-02-23 |
EP2736146A1 (en) | 2014-05-28 |
CN103718419B (zh) | 2016-08-17 |
US20140132063A1 (en) | 2014-05-15 |
CN103718419A (zh) | 2014-04-09 |
JP6060391B2 (ja) | 2017-01-18 |
US9415732B2 (en) | 2016-08-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6060391B2 (ja) | 車両用電源装置 | |
US10710469B2 (en) | Automotive dual voltage battery charging system | |
JP4840359B2 (ja) | エンジン始動装置 | |
JP4893368B2 (ja) | 電源装置 | |
US20190334375A1 (en) | Power redundancy system | |
US20080036419A1 (en) | Battery isolator | |
US20090179613A1 (en) | Charging device | |
JP2003189401A (ja) | ハイブリット車両及びその制御方法 | |
JP7178892B2 (ja) | 車両のバッテリ充電制御装置 | |
JP2010110192A (ja) | 車両用電源装置 | |
JP2015532574A (ja) | 自走車両のための電子回路網 | |
CN111746308B (zh) | 电力系统及其控制方法 | |
JP2016103907A (ja) | 車両用電源装置 | |
JP2014150593A (ja) | 車両用電源システム | |
JP3796353B2 (ja) | Dc/dcコンバータ給電システム | |
JP4054776B2 (ja) | ハイブリッドシステム | |
CN110365098B (zh) | 供电装置 | |
JP2009213223A (ja) | 電圧コンバータ | |
US20050151508A1 (en) | Battery isolator | |
US20180244221A1 (en) | In-vehicle power supply apparatus | |
JP4710547B2 (ja) | 車両用電源装置 | |
KR20090054915A (ko) | 전원장치 | |
JPH074207U (ja) | 車両用電源装置 | |
US20230307725A1 (en) | Battery module including a circuit to control the state of the battery module | |
US20230318336A1 (en) | Battery module including a multi-function relay driver |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12817970 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2013525560 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012817970 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14128410 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |