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WO2018193976A1 - Système d'alimentation électrique et unité de circuit de secours d'alimentation électrique - Google Patents

Système d'alimentation électrique et unité de circuit de secours d'alimentation électrique Download PDF

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Publication number
WO2018193976A1
WO2018193976A1 PCT/JP2018/015476 JP2018015476W WO2018193976A1 WO 2018193976 A1 WO2018193976 A1 WO 2018193976A1 JP 2018015476 W JP2018015476 W JP 2018015476W WO 2018193976 A1 WO2018193976 A1 WO 2018193976A1
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WO
WIPO (PCT)
Prior art keywords
power
power supply
storage element
circuit
output
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/JP2018/015476
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English (en)
Japanese (ja)
Inventor
正好 高橋
山田　英司
秋葉　直樹
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.)
Nippon Chemi Con Corp
Imasen Electric Industrial Co Ltd
Original Assignee
Nippon Chemi Con Corp
Imasen Electric Industrial Co 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 Nippon Chemi Con Corp, Imasen Electric Industrial Co Ltd filed Critical Nippon Chemi Con Corp
Publication of WO2018193976A1 publication Critical patent/WO2018193976A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—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
    • 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
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
    • 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
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems

Definitions

  • the present invention relates to a power supply system having a backup function of a power supply including a storage battery, for example.
  • the power supply for vehicles is required to have power supply capability for various electric loads such as a door lock motor.
  • the door lock release module must have the ability to cover the voltage drop at restart after idle stop and the ability to supply power to devices that require dual system backup such as door lock emergency release. Is done.
  • a sub power supply is provided together with the main power supply, and the power supply of the main power supply is performed using the sub power supply. It is known to assist the ability (Patent Document 1).
  • a 12 [V] output lead-acid battery is used, and a DC-DC converter for stepping down the output of the lead-acid battery and a DC-DC converter output are charged.
  • a capacitor and a DC-DC converter that boosts the charging voltage of the capacitor are provided to supply power to the door lock motor. According to such a power supply mode, even if the output voltage of the lead storage battery decreases, the necessary power can be supplied using the charging voltage of the capacitor, so that the door lock can be released.
  • a DC-DC converter must be provided.
  • a power supply device that supplies power to a vehicle load such as a Naming system
  • a voltage sag at the time of restart.
  • the output of the lead storage battery is boosted by a DC-DC converter and the output is supplied to the load. If the voltage is boosted by the DC-DC converter, the output voltage drop of the lead storage battery at the time of restart can be suppressed.
  • a boosting DC-DC converter is necessary.
  • the use of a lead storage battery as a power storage means has a problem that the life of the lead storage battery is short and the maintenance cost such as replacement is high.
  • a power supply including at least a storage battery and supplying power to a single or a plurality of loads, a storage element installed separately from the storage battery, and the power supply Control means for controlling the load fed from the power supply, and charging the storage element by the power supply and connected to any or all of the loads, receiving a control signal from the control means, A power backup circuit that backs up the power supply to the load by the power storage element before the voltage drops or when the voltage is lost or dropped.
  • the power storage element may be a capacitor or a capacitor module including a plurality of capacitors.
  • the plurality of loads include a load to be supplied with the loss of the power supply and a load to be supplied with a voltage drop of the power supply.
  • the power backup circuit outputs power from the power storage element to a first circuit selected from a charging circuit that charges the power storage element by the power source and a plurality of loads that are fed by the power source.
  • the power supply system may further include a precharge circuit that precharges the power storage element with the power supply.
  • a first switch element provided in the charging circuit, a second switch element shared by the charging circuit and the first output circuit, and a third switch provided in the second output circuit The first switch element and the second switch element are controlled to be in a conductive state in a charging mode of the element and the power storage element, and the second switch element is controlled to be in a conductive state in the first output mode.
  • a control unit that controls the second switch element and the third switch to a conductive state may be provided.
  • the precharge circuit further includes a fourth switch element, and the control unit controls the fourth switch element to be in a conductive state when a charge voltage of the power storage element drops below a reference voltage.
  • the power storage element may be precharged.
  • the first switch element, the second switch element, the third switch element, or the fourth switch element may be a relay, a semiconductor element, or a switch circuit.
  • the power supply backup circuit unit is connected to a power supply that supplies power to a single or a plurality of loads including at least a storage battery, and backs up the power supply.
  • a power storage element installed separately from the storage battery, a charging circuit that charges the power storage element with the power source, and a power that is supplied from the power storage element to a first load selected from a plurality of loads that are powered by the power source.
  • a first output circuit that outputs power
  • a second output circuit that outputs power from the power storage element to a second load selected from a plurality of loads fed by the power source, and charging the power storage element
  • the storage element is connected to a charging circuit, the storage element is connected to the first output circuit in a first output mode, and the storage element is connected to the second output in a second output mode.
  • a connection switching unit that connects to the road.
  • the DC-DC converter that has been required before can be eliminated, and the circuit configuration of the power supply system can be simplified.
  • the storage element can be charged to the same or equivalent voltage as the storage battery on the power supply side, can supply power to one system load at the time when the power supply voltage loss or voltage drop is expected, and the storage element to other system load The power can be supplied from the power supply, and the power supply to each load can be backed up by the storage element, so that the power supply can be stabilized.
  • the load of one system is, for example, a vehicle load, the instantaneous voltage drop of the power supply at the time of restart can be supplemented by the storage element, and operation compensation can be realized.
  • the power supply side power supply can be backed up and the door lock release function can be supplemented by a storage battery.
  • an electric double layer capacitor is used for the power storage element, it is possible to simplify the maintenance and extend the life compared to the conventional lead storage battery.
  • FIG. 4A is a diagram showing precharging of a power storage element
  • B is a diagram showing charging of the power storage element.
  • A is a diagram showing a first output mode of the power backup circuit
  • B is a diagram showing a second output mode of the power backup circuit.
  • 1 is a diagram illustrating a power supply system according to a first embodiment. It is a figure which shows an operation
  • FIG. 6 is a diagram illustrating a power backup circuit unit according to a second embodiment.
  • FIG. 1 shows a power supply system 2 according to an embodiment.
  • the configuration according to FIG. 1 is an example and does not limit the present invention.
  • the power supply system 2 includes a power supply 4 and a power supply backup circuit 6.
  • the power source 4 is, for example, a vehicle power source.
  • the power source 4 is provided with a battery 8 and an alternator 10, and is connected to, for example, a load 14-1 as a first system load and a load 14-2 as a second system load among a plurality of vehicle loads.
  • the battery 8 uses, for example, a lead storage battery with an output of 12 [V], and can be charged with the DC output of the alternator 10.
  • the load 14-1 is a load that requires power backup, such as a door lock release system. It is a load that should compensate for a voltage against an instantaneous voltage drop, such as a car navigation system.
  • the battery 14 is connected to the load 14-1 via a diode (hereinafter referred to as "D") 18-1, and the output of the power backup circuit 6 is connected to the load 14-1 via D18-2.
  • D18-1 is an insulating means for preventing current from flowing from the power backup circuit 6 to the battery 8 side
  • D18-2 is an insulating means for preventing current from flowing from the battery 8 into the storage element 20.
  • the load 14-2 is, for example, a load that should compensate for a voltage against an instantaneous voltage drop, such as a car navigation system when a stop-and-go engine is restarted.
  • the battery 14 is connected to the load 14-2 via D18-3, and the output of the power backup circuit 6 is connected.
  • D18-3 is an insulating means for preventing the current of the power backup circuit 6 from flowing to the battery 8 side.
  • the power supply backup circuit 6 includes a storage element 20, a charging circuit 22, a first output circuit 24-1, a second output circuit 24-2, a precharge circuit 26, a connection switching unit 28, and a control unit 30. 4 is supplied with the input voltage V_in.
  • the storage element 20 is a backup element of the power supply 4 and may be, for example, an electric double layer capacitor (hereinafter referred to as “EDLC”) or a battery such as a lead storage battery.
  • the charging circuit 22 includes a first switch element (hereinafter referred to as “SW”) 28-1 and a second SW 28-2.
  • SWs 28-1 and 28-2 may be constituted by switching elements such as relays and semiconductor elements.
  • the SWs 28-1 and 28-2 are connected in series between the power source 4 and the power storage element 20. When both the SWs 28-1 and 28-2 are turned on, the input voltage V_in is applied to the power storage element 20, and the power storage element 20 Charged.
  • the output circuit 24-1 outputs the output voltage V_out1 as the first backup output of the power supply 4 by the charging voltage of the storage element 20.
  • the output circuit 24-1 is provided with a SW 28-2 that is shared with the charging circuit 22. The conduction of the SW 28-2 supplies the output voltage V_out1 to the load 14-1 with the charging voltage of the storage element 20.
  • the output circuit 24-2 outputs the output voltage V_out2 as the second backup output of the power supply 4 by the charging voltage of the storage element 20.
  • the output circuit 24-2 includes a third SW 28-3. When the SW 28-3 is turned on, the output voltage V_out2 is supplied to the load 14-2 with the charging voltage of the power storage element 20.
  • SW28-3 may be formed of a switching element such as a relay or a semiconductor element.
  • the precharge circuit 26 precharges the power storage element 20 according to the value of the voltage V_cap of the power storage element 20.
  • the precharge circuit 26 includes a charging resistor 32 and a fourth SW 28-4. When the SW 28-4 is turned on, a precharge current is supplied from the power supply 4 to the power storage element 20.
  • SW28-4 may be formed of a switching element such as a relay or a semiconductor element.
  • the power backup circuit 6 is provided with a control unit 30 as a control means for performing opening / closing control of the SWs 28-1, 28-2, 28-3, 28-4.
  • the control unit 30 is supplied with the input voltage V_in from the power source 4 and the voltage V_cap of the storage element 20.
  • the control unit 30 monitors the input voltage V_in and the voltage V_cap of the storage element 20, and outputs a conduction control signal and an interruption control signal for opening and closing the SWs 28-1, 28-2, 28-3, 28-4 according to the transition. To do.
  • the operation of the power backup circuit 6 includes a precharge mode, a charge mode, a first output mode and a second output mode of the power backup circuit 6.
  • a) Precharge of the storage element 20 As shown in FIG. 2A, when the voltage V_cap of the storage element 20 falls below the reference voltage Vref1 to start the precharge, the precharge start signal output by the control unit 30 SW28-4 becomes conductive. As a result, a precharge current flows from the battery 8 to the storage element 20 through the precharge circuit 26, and the storage element 20 is precharged.
  • the control unit 30 When the input voltage V_in rises above the reference voltage Vref2, the control unit 30 outputs a cutoff (conduction release) control signal for SW28-2 and SW28-3, and the SW28-2 and 28-3 shift to the cutoff state. . If the voltage V_cap of the power storage element 20 is reduced by this backup operation, the charging circuit 22 performs the above-described charging.
  • the control unit 30 when the voltage of the power supply 4 drops, such as when the input voltage V_in disappears, the control unit 30 outputs a conduction control signal to the SW 28-2, and makes the SW 28-2 conductive.
  • the output V_out1 is supplied from the power backup circuit 6 to the load 14-1. That is, the power supply to the load 14-1 is backed up by the output V_out1 of the power supply backup circuit 6.
  • the control unit 30 outputs a cutoff control signal to the conducting SW 28-2, and releases the conduction of the SW 28-2. If the voltage V_cap of the power storage element 20 is reduced by this backup operation, the charging circuit 22 performs the above-described charging.
  • the power storage device 20 of the power backup circuit 6 that backs up the power supply 4 including the battery 8 such as a storage battery is charged in two stages of precharging and charging, and when the voltage of the power supply 4 is lowered, step by step according to the state.
  • the power supply to the first load 14-1 and the second load 14-2 can be backed up.
  • the power supply can be backed up against the voltage drop of the power supply 4. For example, in the case of an instantaneous voltage drop, the power supply of the load 14-1 and the load 14-2 is backed up, and when the normal state is restored, the backup power supply is started. At the time of voltage loss or voltage drop, the power of the power storage element 20 can be supplied to the load 14-1 in place of the power supply 4, and the operation of the load 14-1 can be ensured.
  • the precharge by the precharge circuit 26 and the charge by the charging circuit 22 can be used together to charge the power storage element 20 to the required power.
  • the storage element 20 can be charged by selectively switching the precharge circuit 26 or the charge circuit 22 in accordance with the charging voltage V_cap, and the storage element 20 can be charged stepwise or systematically.
  • the power supply backup circuit 6 includes a power storage element 20 as power holding means, a charging circuit 22 for the power storage element 20, output circuits 24-1 and 24-2 that output power stored in the power storage element 20, and the power storage element 20
  • the precharge circuit 26 is provided, and these are switched by the connection switching unit 28 including SW28-1, SW28-2, SW28-3, and SW28-4, so that backup output is selected for precharge, charge, and different loads. Power can be supplied.
  • An EDLC or a lead storage battery can be used for the storage element 20.
  • FIG. 4 illustrates a power supply system according to the first embodiment.
  • the power supply system 2 of the first embodiment constitutes a vehicle power supply system.
  • the power source 4 includes, for example, a 12 [V] battery 8, an alternator 10, and an engine starter 12.
  • the alternator 10 and the starter 12 may be replaced with a starter function generator (ISG).
  • loads 14-11 and 14-12 as first system loads
  • a load 14-2 as a second system load
  • a load 14-3 as a third system load.
  • the load 14-11 is, for example, a single or multiple vehicle loads such as a door unlocking module, and the load 14-12 is, for example, a single or multiple vehicle loads that require backup, such as an E boost electric brake.
  • the load 14-2 is a single or a plurality of vehicle loads that should avoid a voltage drop when starting i-stop (registered trademark), such as preventing microcomputer ( ⁇ CON) resetting and preventing audio (AUDIO) sound interruption.
  • the load 14-3 is a vehicle load of 12 [V], such as a wiper and a headlight, for example, which does not require backup and does not cause a voltage drop.
  • a single or a plurality of EDLCs (electric double layer capacitors) 34 are used for the storage element 20.
  • an EDLC module 36 including a series circuit or a parallel circuit of a plurality of EDLCs 34 is used.
  • the EDLC module 36 may be provided with a balance circuit such as a charge balance during charging and a bypass circuit for preventing overcharge.
  • the control unit 30 is connected to a power management unit (hereinafter referred to as “ECU”) 38 as an example of a power control unit on the host side, and is controlled by the ECU 38.
  • the control unit 30 may be installed outside the power supply backup circuit 6 similarly to the ECU 38.
  • SWs 28-1, 28-2, 28-3, and 28-4 of the connection switching unit 28 may be any of a relay such as a photo MOS relay and a mechanical relay, a semiconductor switch such as a transistor, and a switch circuit including these.
  • Scene II is IG (ignition) ON ⁇ Eng (engine) start (charging mode).
  • Scene III is an i-stop or restart (output mode M1 or M2).
  • Scene IV is a door lock release necessary state (output mode M1).
  • Scene V is when the voltage drops or voltage is lost (output mode M1).
  • SW28-1 OFF
  • SW28-2 Scene VI
  • SW28-3 OFF
  • SW28-4 OFF.
  • FIG. 6 shows an operation procedure of the power supply system 2 at the time of restart.
  • this restart operation all of SWs 28-1, 28-2, and 28-3 are turned OFF.
  • the precharge circuit 26 is turned on (S102).
  • V_in> 10 [V] is determined by starting backup (S111)
  • V_in> 10 [V] is not satisfied (NO in S111)
  • backup power supply is continued until V_in> 10 [V].
  • V_in> 10 [V] is reached (YES in S111)
  • the discharge of the EDLC module 36 is stopped (S112), and the process returns to S105.
  • the backup power supply by the power backup circuit 6 is released.
  • FIG. 7 shows an operation procedure of the door lock releasing operation.
  • V_cap ⁇ 6 [V] S203. If V_cap ⁇ 6 [V] is not satisfied (NO in S203), discharging is continued until V_cap ⁇ 6 [V] is reached. To do.
  • V_cap ⁇ 6 [V] YES in S203
  • the discharge of the EDLC module 36 is terminated.
  • SW28-1, SW28-2 and SW28-3 OFF.
  • the backup of the power backup circuit 6 is completed.
  • FIG. 8 shows an operation procedure when the power supply voltage drops or voltage is lost.
  • V_in 10 [V] or less or V_out2 is shorted to GND (S301)
  • the EDLC module 36 is cut off from V_in and V_out2 (S302).
  • SW28-1, SW28-2 and SW28-3 OFF.
  • V_in disappears due to an accident.
  • the control unit 30 receives the door lock emergency release signal from the ECU 38 at time t10, the SW 28-2 is turned on, and the power supply to the loads 14-11 and 14-12 is backed up. .
  • V_cap 6 [V] at time t11, the backup is stopped. As a result, V_cap tends to recover from time t11.
  • ⁇ Precharge of EDLC module 36> As shown in FIG. 10A, the EDLC module 36 is precharged by a precharge current flowing from the power supply 4 when the SW 28-4 is conductive. ⁇ Charging the EDLC module 36> As shown in FIG. 10B, the EDLC module 36 is charged by the charging current flowing from the power supply 4 when the SW 28-1 and SW 28-2 are in conduction.
  • ⁇ Output V_out1, V_out2 of EDLC module 36> The outputs V_out1 and V_out2 of the EDLC module 36 are taken out by the conduction of SW28-2 and SW28-3 as shown in A of FIG.
  • the output V_out1 is output to the loads 14-11 and 14-12, and the output V_out2 is output to the load 14-2.
  • ⁇ Output V_out1 of EDLC module 36> As shown in FIG. 11B, the output V_out1 of the EDLC module 36 is output from the EDLC module 36 to the loads 14-11 and 14-12 when the SW 28-2 is conductive.
  • a lead storage battery is used for the battery 8 of the power supply 4 and the power backup circuit 6 uses an EDLC module 36 including a series circuit or a parallel circuit of a plurality of EDLCs 34
  • the power supply backup function of the system 2 can be realized.
  • the EDLC 34 is used instead of the conventional lead battery, the holding power can be quickly charged with respect to the input voltage V_in, and efficient and reliable backup power supply control can be realized.
  • the EDLC 34 Since the EDLC 34 is used, the potential of the EDLC 34 can be easily adjusted to the input voltage V_in from the battery 8 by making the SW 28-4 of the precharge circuit 26 conductive. As a result, when the SWs 28-1 and 28-2 and the like are turned on, generation of a large current due to a potential difference can be prevented and damage to the SWs 28-1 and 28-2 can be prevented.
  • the EDLC 34 used for the power storage device 20 has a long service life, and maintenance costs such as replacement can be greatly reduced, and equipment costs can be reduced.
  • the power backup circuit 6 includes an EDLC module 36 that functions as a secondary battery, and includes a connection switching unit 28 for switching between precharge, charging, and first and second outputs, and the connection switching unit 28 is relayed.
  • the minimum number of SWs 28-1, 28-2, 28-3, and 28-4 can be used, and the control unit 30 can be electrically switched.
  • (6) When mounted on a vehicle, when idling is stopped, for example, power is supplied from the EDLC module 36 to a plurality of loads, and power is supplied from a 12 [V] lead battery only to restart the engine. Can be realized.
  • the power backup circuit 6 can be used as the power source for the door lock release module, and the power of the EDLC module 36 is used to supply power to the door lock motor in the event of an unexpected situation such as voltage drop or loss of the battery 8. It can be used, door locking and the like can be avoided, and vehicle safety can be ensured.
  • a decrease in starting current at the time of engine start can be prevented by switching operation of the SW 28-1, 28-2, 28-4 of the power backup circuit 6.
  • the battery 8 and the EDLC module 36 can be parallelized.
  • electric power can be supplied from both the battery 8 and the EDLC module 36 to the starter 12 and a starting current can flow.
  • the fuel is difficult to vaporize, the current supplied from the battery 8 tends to decrease, and the engine starts harder due to hardening of the engine oil.
  • the EDLC of the power backup circuit 6 supplies power to the starter 12. By using the power supply from the module 36 in combination, the starting current can be prevented from decreasing. A favorable engine start can be performed by the backup power supply to the starter 12 at the start.
  • FIG. 13 shows an example of a power backup circuit unit according to the second embodiment.
  • the power backup circuit unit 60 is configured by configuring the power backup circuit 6 of the power system 2 (FIG. 4) according to the first embodiment as an independent circuit unit.
  • the power supply backup circuit unit 60 has a circuit configuration similar to that of the power supply backup circuit 6 described above, and connection terminals 62-1, 62-2, 62-3, 62-4, 62 used for connection to an external power supply or load. -5, 62-6. Since the circuit configuration is the same as that of the power supply backup circuit 6 described above, a common reference numeral is given and its description is omitted.
  • Example 2 ⁇ Effect of Example 2> According to the power backup circuit unit 60, the following effects can be obtained. (1) By connecting to an arbitrary power supply or load, power supply to the load can be backed up against unexpected situations such as momentary voltage drop or power supply voltage loss. (2) The power backup circuit unit 60 can be incorporated into, for example, a single circuit board or chassis, and maintenance such as replacement at the time of deterioration can be easily performed.
  • the storage element 20 may be a secondary battery in addition to a lead battery.
  • another generator may be used.
  • the most preferred embodiments and examples of the present invention have been described.
  • the present invention is not limited to the above description, and various modifications and changes can be made by those skilled in the art based on the gist of the invention described in the claims or disclosed in the embodiments for carrying out the invention. It is. It goes without saying that such modifications and changes are included in the scope of the present invention.
  • the present invention can back up a power source that uses a battery such as a storage battery with a power source backup circuit equipped with an EDLC, simplifies the circuit configuration except for the DC-DC converter, stabilizes the power supply to the load, and operates. It can maintain reliability and is useful.
  • Power supply system 4 Power supply 6 Power backup circuit 8 Battery 10 Alternator 12 Starter 14-1, 14-2 Load 18-1, 18-2, 18-3, 18-4 Diode 20 Storage element 22 Charging circuit 24-1 First Output circuit 24-2 second output circuit 26 precharge circuit 28 connection switching unit 28-1 first switch element 28-2 second switch element 28-3 third switch element 28-4 fourth switch Element 30 Control unit 32 Charging resistor 34 EDLC 36 EDLC module 38 Power management unit 60 Power backup circuit unit 62-1, 62-2, 62-3, 62-4, 62-5, 62-6 Connection terminal

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Un système d'alimentation électrique comprend : une alimentation électrique (4) comprenant au moins une batterie rechargeable (batterie 8) et fournissant de l'énergie à une pluralité de charges (14-1, 14-2, 14-3) ; un élément de stockage d'électricité (20) installé séparément de la batterie rechargeable ; un moyen de commande (unité de commande 30, bloc de commande électronique 38) pour commander une charge unique ou une pluralité de charges auxquelles la puissance est fournie à partir de l'alimentation électrique ; et un circuit de secours d'alimentation électrique (6) qui charge l'élément de stockage d'électricité à l'aide de l'alimentation électrique, est connecté à l'une quelconque ou à l'ensemble des charges, et reçoit un signal de commande en provenance du moyen de commande, ce qui permet de sauvegarder l'alimentation électrique des charges à l'aide de l'élément de stockage d'électricité avant ou lorsque la tension de l'alimentation électrique est perdue ou chute. Ceci élimine un convertisseur continu-continu et permet de sauvegarder l'alimentation électrique.
PCT/JP2018/015476 2017-04-17 2018-04-13 Système d'alimentation électrique et unité de circuit de secours d'alimentation électrique Ceased WO2018193976A1 (fr)

Applications Claiming Priority (2)

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JP2017-081113 2017-04-17
JP2017081113A JP2018182935A (ja) 2017-04-17 2017-04-17 電源システムおよび電源バックアップ回路ユニット

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WO2018193976A1 true WO2018193976A1 (fr) 2018-10-25

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