WO2017043311A1 - 車載用電源装置 - Google Patents

車載用電源装置 Download PDF

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Publication number
WO2017043311A1
WO2017043311A1 PCT/JP2016/074594 JP2016074594W WO2017043311A1 WO 2017043311 A1 WO2017043311 A1 WO 2017043311A1 JP 2016074594 W JP2016074594 W JP 2016074594W WO 2017043311 A1 WO2017043311 A1 WO 2017043311A1
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WO
WIPO (PCT)
Prior art keywords
power storage
storage device
voltage
converter
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/074594
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English (en)
French (fr)
Japanese (ja)
Inventor
裕通 安則
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Wiring Systems Ltd, AutoNetworks Technologies Ltd, Sumitomo Electric Industries Ltd filed Critical Sumitomo Wiring Systems Ltd
Priority to CN201680048645.XA priority Critical patent/CN107921916B/zh
Priority to US15/758,620 priority patent/US11066027B2/en
Publication of WO2017043311A1 publication Critical patent/WO2017043311A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1423—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1469—Regulation of the charging current or voltage otherwise than by variation of field
    • H02J7/1492—Regulation of the charging current or voltage otherwise than by variation of field by means of controlling devices between the generator output and the battery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • H02J2310/46—The network being an on-board power network, i.e. within a vehicle for ICE-powered road vehicles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • H02J7/345—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering using capacitors as storage or buffering devices
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using 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
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

Definitions

  • the present invention relates to an in-vehicle power supply device.
  • Patent Document 1 describes an in-vehicle power supply device having a main battery and a sub battery. The main battery and the sub battery are charged by an alternator.
  • an object of the present application is to provide an in-vehicle power supply device that can charge a plurality of power storage devices with voltages suitable for each of them and can reduce manufacturing costs.
  • the in-vehicle power supply device selects a converter that outputs DC power, a first power storage device and a second power storage device that are charged via the converter, and ON / OFF between the converter and the first power storage device
  • a first switch that performs switching
  • a second switch that selects on / off between the converter and the second power storage device, and on the converter side of the first switch and the second switch, on the output side of the converter
  • ⁇ Charging can be performed at a voltage suitable for each of a plurality of power storage devices, and manufacturing costs can be reduced.
  • FIG. 1 is a diagram schematically illustrating an example of a configuration of an in-vehicle power supply device mounted on a vehicle.
  • a generator 1 is provided.
  • the generator 1 is an alternator, for example, and generates electric power based on a driving force that drives the vehicle and outputs a DC voltage.
  • a main power storage device 31 is connected to the generator 1.
  • the main power storage device 31 is charged by the generator 1.
  • a lead storage battery is employed for the main power storage device 31.
  • auxiliary power storage devices 32 to 34 are connected to the generator 1 via a converter 4 (denoted as “DCDC converter” in FIG. 1).
  • a converter 4 denoted as “DCDC converter” in FIG. 1.
  • the auxiliary power storage device 32 is, for example, a lithium ion battery
  • the auxiliary power storage devices 33, 34 are, for example, capacitors.
  • the characteristics of the auxiliary power storage devices 32 to 34 may be different from each other.
  • the rated voltage of auxiliary power storage device 32 is larger than the rated voltage of auxiliary power storage device 33, and the rated voltage of auxiliary power storage device 33 is higher than the rated voltage of auxiliary power storage device 34.
  • the auxiliary power storage device 32 is charged to 12V and fully charged, the auxiliary power storage device 33 is charged to 7V and fully charged, and the auxiliary power storage device 34 is charged to 5V and fully charged.
  • a power storage device with a higher rated voltage has a higher voltage when fully charged.
  • a switch (for example, a relay) 52 is connected between the converter 4 and the auxiliary power storage device 32.
  • Switch 52 selects on / off between converter 4 and auxiliary power storage device 32.
  • a switch (for example, a relay) 53 is connected between the converter 4 and the auxiliary power storage device 33, and a switch (for example, a relay) 54 is connected between the converter 4 and the auxiliary power storage device 34.
  • one ends of the switches 52 to 54 are commonly connected to the output end of the converter 4, and the other ends of the switches 52 to 54 are connected to the auxiliary power storage devices 32 to 34, respectively. On / off of the switches 52 to 54 is controlled by the control unit 41.
  • the converter 4 is, for example, a DC-DC converter, and is a H-bridge type step-up / down circuit as a more specific example.
  • Converter 4 is controlled by control unit 41 to step up or step down the DC voltage from generator 1 or main power storage device 31 and output it.
  • Converter 4 controls charging of auxiliary power storage devices 32 to 34, as will be described in detail later.
  • the auxiliary power storage devices 32 to 34 are charged with, for example, different voltages or different currents.
  • the control unit 41 includes a microcomputer and a storage device.
  • the microcomputer executes each processing step (in other words, a procedure) described in the program.
  • the storage device is composed of one or more of various storage devices such as a ROM (Read Only Memory), a RAM (Random Access Memory), a rewritable nonvolatile memory (EPROM (Erasable Programmable ROM), etc.), and a hard disk device, for example. Is possible.
  • the storage device stores various information, data, and the like, stores a program executed by the microcomputer, and provides a work area for executing the program. It can be understood that the microcomputer functions as various means corresponding to each processing step described in the program, or can realize that various functions corresponding to each processing step are realized.
  • the control unit 41 is not limited to this, and various procedures executed by the control unit 41 or various means or various functions to be realized may be realized by hardware.
  • the control unit 41 outputs a control signal to the converter 4 in order to control the output voltage or output current of the converter 4.
  • the control unit 41 also outputs a control signal to the switches 52 to 54 in order to control on / off of the switches 52 to 54.
  • the DC voltage V on the output side (switches 52 to 54 side) of the converter 4 is monitored by the voltage monitoring circuit 42.
  • the voltage monitoring circuit 42 detects the DC voltage V on the converter 4 side of the switches 52 to 54. For example, when switch 52 is turned on and switches 53 and 54 are turned off, the output terminal of converter 4 is connected to auxiliary power storage device 32. At this time, if converter 4 has stopped operating, DC voltage V substantially matches the charging voltage of auxiliary power storage device 32. That is, at this time, the voltage monitoring circuit 42 can detect the charging voltage of the auxiliary power storage device 32.
  • the voltage monitoring circuit 42 can detect the charging voltage of the auxiliary power storage device 33 and the switch 54 is turned on.
  • the voltage monitoring circuit 42 can detect the charging voltage of the auxiliary power storage device 34.
  • the voltage monitoring circuit 42 determines whether it is necessary to start each charging based on the charging voltage of each of the auxiliary power storage devices 32 to 34.
  • the charging rate may be calculated based on the detected charging voltage, and it may be determined whether or not the charging rate is greater than a charging reference value. More specifically, when it is determined that the charging rate is smaller than the charging reference value, it may be determined that the start of charging is necessary. Alternatively, when the detected charging voltage is smaller than a predetermined reference value, it may be determined that charging needs to be started.
  • the voltage monitoring circuit 42 determines that charging needs to be started, the voltage monitoring circuit 42 notifies the control unit 41 accordingly.
  • the voltage monitoring circuit 42 may be configured by software, or all or a part thereof may be configured by hardware.
  • the control unit 41 may determine whether or not to start charging. In this case, the control unit 41 functions as a part of the voltage monitoring circuit.
  • one of the voltage monitoring circuits 42 is connected to the auxiliary power storage devices 32 to 34 by exclusively turning on the switches 52 to 54 while the operation of the converter 4 is stopped.
  • the charging voltage can be monitored. Therefore, the manufacturing cost can be reduced as compared with the case where the voltage monitoring circuit is provided for each of the auxiliary power storage devices 32 to.
  • the converter 4 can output voltages to the plurality of auxiliary power storage devices 32 to 34 individually or in parallel. Therefore, the manufacturing cost can be reduced as compared with the case where a converter is provided for each of auxiliary power storage devices 32 to.
  • the power storage device can be easily added.
  • the main power storage device 31 supplies power to the rescue loads 22 to 24, and the auxiliary power storage devices 32 to 34 also supply power to the rescue loads 22 to 24, respectively. It is desired that the relief loads 22 to 24 maintain the power supply even if the power supply from the main power storage device 31 is lost (including the loss due to malfunction of the main power storage device 31) (relieved from the power shortage due to the loss).
  • by-wire electronics eg shift levers
  • by-wire actuators eg steering, brakes
  • parking brakes e.g electronically controlled braking force distribution systems
  • the main power storage device 31 is connected to the relief loads 22 to 24 without going through the converter 4, and feeds power to these without going up and down.
  • the auxiliary power storage device 32 is connected to the relief load 22 without passing through the booster circuit, and the auxiliary power storage devices 33 and 34 are connected to the relief loads 23 and 24 via the booster circuits 63 and 64, respectively. It is connected to the.
  • the booster circuit 63 boosts the voltage of the auxiliary power storage device 33 and outputs the boosted voltage to the relief load 23.
  • the booster circuit 64 boosts the voltage of the auxiliary power storage device 34 and outputs the boosted voltage to the relief load 24.
  • auxiliary power storage devices 32 to 34 can supply power to the rescue loads 22 to 24, respectively, even if the power supply of the main power storage device 31 is lost, power supply to the rescue loads 22 to 24 is maintained. Therefore, the auxiliary power storage devices 32 to 34 can function as so-called backup power storage devices.
  • auxiliary power storage devices 32 to 34 are provided, the influence of the voltage drop generated in the main power storage device 31 can be suppressed or avoided as described below. For example, even if the main power storage device 31 outputs a large current and a voltage drop occurs in the main power storage device 31, an appropriate voltage can be applied to the relief loads 22 to 24 by the auxiliary power storage devices 32 to 34, respectively. it can.
  • FIG. 2 is a diagram for explaining an example of the charging operation.
  • the output voltage output by the converter 4 and the charging voltages of the auxiliary power storage devices 32 to 34 are shown. Also shown are the on / off states of the switches 52-54.
  • the control unit 41 Upon receiving this notification, the control unit 41 causes the converter 4 to output DC power with a voltage or current suitable for the auxiliary power storage device 32 at time t2. For example, the control unit 41 causes the converter 4 to output a voltage suitable for the auxiliary power storage device 32, for example, a voltage of 12 [V]. Thereby, auxiliary power storage device 32 is charged, and its charging voltage increases with the passage of time.
  • the control unit 41 stops the operation of the converter 4 and turns off the switch 52.
  • the fact that the charging rate has reached the full charge reference value may be determined, for example, by the fact that the current flowing to the auxiliary power storage device 32 has become the reference value or less. This current can be detected by providing a current detector on the output side of the converter 4, for example. Alternatively, it may be determined that the charging rate has reached the full charge reference value due to the elapse of a predetermined period from the start of charging. In the illustration of FIG. 2, the charging voltage of the auxiliary power storage device 32 is 12 [V] at time t3.
  • the control unit 41 turns on the switch 53. Thereby, DC voltage V on the output side of converter 4 substantially matches the charging voltage of auxiliary power storage device 33.
  • voltage monitoring circuit 42 determines whether or not it is necessary to start charging of auxiliary power storage device 33 based on DC voltage V. Here, the voltage monitoring circuit 42 notifies the control unit 41 that charging is necessary.
  • the control unit 41 Upon receiving this notification, the control unit 41 causes the converter 4 to output DC power with a voltage or current suitable for the auxiliary power storage device 33 at time t5. For example, the control unit 41 causes the converter 4 to output a voltage suitable for the auxiliary power storage device 33, for example, a voltage of 7 [V]. Thereby, auxiliary power storage device 33 is charged, and its voltage increases with the passage of time.
  • the control unit 41 stops the operation of the converter 4 and turns off the switch 53. Thereby, the charging of the auxiliary power storage device 33 is completed.
  • the charging voltage of the auxiliary power storage device 33 at time t6 is 7 [V].
  • the control unit 41 turns on the switch 54. Thereby, DC voltage V on the output side of converter 4 substantially matches the charging voltage of auxiliary power storage device 34.
  • voltage monitoring circuit 42 determines whether or not it is necessary to start charging of auxiliary power storage device 34 based on DC voltage V. In the illustration of FIG. 2, since the charging voltage of the auxiliary power storage device 34 is 5 V, the voltage monitoring circuit 42 notifies the control unit 41 that charging is unnecessary.
  • Control unit 41 receives this notification and turns off switch 54 at time t8.
  • converter 4 can output DC power to each auxiliary power storage device at a voltage or current suitable for each auxiliary power storage device at each timing.
  • the converter 4 outputs a voltage of 12 [V] to charge the auxiliary power storage device 32, outputs a voltage of 7 [V] to charge the auxiliary power storage device 32, and outputs a voltage of 5 [V].
  • the auxiliary power storage device 32 can be charged.
  • Auxiliary power storage devices with a higher rated voltage can be charged more quickly by charging with a higher voltage.
  • the voltage output by converter 4 to auxiliary power storage devices 32 and 33 is the rated voltage of auxiliary power storage devices 32 and 33, respectively.
  • the output current of the converter 4 may be controlled.
  • the rated current of the auxiliary power storage device 33 is smaller than the rated current of the auxiliary power storage device 32 is considered.
  • a power storage device with a larger rated current can be charged with a larger current.
  • control unit 41 When it is determined that charging of the auxiliary power storage device 32 is necessary, the control unit 41 causes the converter 4 to output DC power with the first DC current while only the switch 52 is turned on among the switches 52 to 54. Thereby, auxiliary power storage device 32 is charged. On the other hand, when it is determined that it is necessary to start charging of auxiliary power storage device 33, control unit 41 performs a second DC current smaller than the first DC current with only switch 53 turned on among switches 52 to 54. Thus, the converter 4 is caused to output DC power. Thereby, the auxiliary power storage device 33 is charged.
  • an auxiliary power storage device with a larger rated current can be charged quickly by charging with a larger current.
  • the current output by converter 4 to auxiliary power storage devices 32 and 33 is 1/10 of the rated current of auxiliary power storage devices 32 and 33, respectively.
  • the converter 4 may control both the output voltage and the output current. For example, DC power may be output to the converter 4 at a constant current at the beginning of charging, and DC power may be output to the converter 4 at a constant voltage after the charging voltage reaches the rated voltage.
  • FIG. 3 is a diagram for explaining an example of the charging operation. Initially, the operation of the converter 4 is stopped and the switches 52 to 54 are off. At time t11, the control unit 41 turns on the switch 52. Thereby, DC voltage V on the output side of converter 4 matches the charging voltage of auxiliary power storage device 32. The voltage monitoring circuit 42 determines whether or not the auxiliary power storage device 32 needs to be charged based on the DC voltage V, and notifies the control unit 41 of the determination result. Here, for example, it is determined that the auxiliary power storage device 32 needs to be charged.
  • the control unit 41 turns off the switch 52 and turns on the switch 53. Thereby, DC voltage V on the output side of converter 4 matches the charging voltage of auxiliary power storage device 33.
  • the voltage monitoring circuit 42 determines whether it is necessary to start charging the auxiliary power storage device 33 based on the DC voltage V, and notifies the control unit 41 of the determination result. Here, for example, it is determined that the auxiliary power storage device 33 also needs to be charged.
  • the control unit 41 turns on the switch connected to the auxiliary power storage device that requires charging, and keeps the other switches off.
  • the control unit 41 determines that charging of auxiliary power storage devices 32 and 33 is necessary, and it is determined that charging of auxiliary power storage device 34 is unnecessary. Therefore, as shown in FIG. 3, switches 52 and 53 are turned on at time t14. Then, the switch 54 is turned off.
  • control unit 41 causes the converter 4 to output the minimum voltage or current suitable for the plurality of auxiliary power storage devices to be charged.
  • the control unit 41 causes the converter 4 to output a voltage having a value (here, 7 [V]) suitable for the smaller rated voltage of the auxiliary power storage devices 32 and 33.
  • a voltage having a value here, 7 [V]
  • the voltage of the auxiliary power storage devices 32 and 33 appropriately increases with the passage of time.
  • the control unit 41 turns off the switch 53. That is, since charging of the auxiliary power storage device 33 is unnecessary, the switch 53 is turned off.
  • the switch 53 is turned off at a time t15 after a predetermined time has elapsed from the time when the voltage of the auxiliary power storage device 33 reaches 7 [V], but the voltage of the auxiliary power storage device 33 is 7 [V].
  • the switch 53 may be turned off immediately after the time when V] is reached, in other words, immediately after the charging rate of the auxiliary power storage device 33 reaches the full charge reference value.
  • the control unit 41 causes the converter 4 to output a voltage (here, 12 [V]) larger than the voltage (7 [V]) that the converter 4 has output so far.
  • the voltage of the auxiliary power storage device 32 further increases with the passage of time.
  • the control unit 41 turns off the switch 52 and stops the operation of the converter 4. In the example of FIG.
  • the switch 52 is turned off after a lapse of a predetermined time from the time when the voltage of the auxiliary power storage device 32 reaches 12 [V], but the voltage of the auxiliary power storage device 32 reaches 12 [V].
  • the switch 52 may be turned off immediately after the time point, in other words, immediately after the charging rate of the auxiliary power storage device 32 reaches the full charge reference value.
  • converter 4 when it is determined that charging of both auxiliary power storage device 32 and auxiliary power storage device 33 is necessary, converter 4 first outputs a small first DC voltage, and then switch 53 is turned off. The converter 4 outputs a second DC voltage that is greater than the first DC voltage.
  • the first DC voltage and the second DC voltage are set to the rated voltage of the auxiliary power storage device 33 and the rated voltage of the auxiliary power storage device 32, respectively.
  • control unit 41 outputs the first DC current to converter 4 with switches 52 and 53 turned on among switches 52 to 54. Let Thereby, auxiliary power storage devices 32 and 33 are charged. Thereafter, with switch 53 turned off, control unit 41 causes converter 4 to output a second DC current larger than the first DC current.
  • the auxiliary power storage device 32 can be charged with a current suitable for the auxiliary power storage device 32.
  • the current output by converter 4 to auxiliary power storage devices 32 and 33 is 1/10 of the rated current of auxiliary power storage devices 32 and 33, respectively.
  • auxiliary power storage device 32 is charged in parallel during the period of charging auxiliary power storage device 33. Can be charged quickly.
  • the auxiliary power storage device 33 does not start charging until the auxiliary power storage device 32 is fully charged. Therefore, there is a possibility that the auxiliary power storage device 33 cannot execute sufficient power supply to the relief load 23 during that period.
  • the auxiliary power storage devices 32 and 33 are charged in parallel, so that sufficient power can be quickly supplied to the rescue load 23.
  • the voltage confirmation period is shown to be relatively long, but actually it is sufficiently shorter than the charging period. According to the charging method of FIG. 3, although the timing of starting charging of the auxiliary power storage device 32 is later than that of FIG. 2, the voltage check period is sufficiently shorter than the charging period, and the delay is actually small.
  • the switch 53 is turned off and the converter 4 outputs a voltage suitable for the auxiliary power storage device 32.
  • the converter 4 may output a voltage suitable for the auxiliary power storage device 32 after turning off the switch 53 during the charging of the auxiliary power storage device 33. This also makes it possible to increase the charging rate of the auxiliary power storage device 33 to some extent early.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
PCT/JP2016/074594 2015-09-11 2016-08-24 車載用電源装置 Ceased WO2017043311A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201680048645.XA CN107921916B (zh) 2015-09-11 2016-08-24 车载用电源装置
US15/758,620 US11066027B2 (en) 2015-09-11 2016-08-24 In-vehicle power supply apparatus configured to charge a plurality of batteries

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-179319 2015-09-11
JP2015179319A JP6551089B2 (ja) 2015-09-11 2015-09-11 車載用電源装置

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WO2017043311A1 true WO2017043311A1 (ja) 2017-03-16

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US (1) US11066027B2 (enExample)
JP (1) JP6551089B2 (enExample)
CN (1) CN107921916B (enExample)
WO (1) WO2017043311A1 (enExample)

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JP2018182935A (ja) * 2017-04-17 2018-11-15 株式会社今仙電機製作所 電源システムおよび電源バックアップ回路ユニット
CN107745689A (zh) * 2017-10-26 2018-03-02 成都西加云杉科技有限公司 车载备用供电系统及机动车
US11135934B2 (en) * 2019-09-06 2021-10-05 Nio Usa, Inc. Vehicle power devices, systems, and methods for sleep mode
US11345253B2 (en) * 2019-09-19 2022-05-31 Nio Usa, Inc. Vehicle power devices, systems, and methods for fail operational electronic control unit power management

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