WO2023277002A1 - 電源装置及び電動装置 - Google Patents
電源装置及び電動装置 Download PDFInfo
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- WO2023277002A1 WO2023277002A1 PCT/JP2022/025712 JP2022025712W WO2023277002A1 WO 2023277002 A1 WO2023277002 A1 WO 2023277002A1 JP 2022025712 W JP2022025712 W JP 2022025712W WO 2023277002 A1 WO2023277002 A1 WO 2023277002A1
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- voltage
- power supply
- power
- storage device
- control circuit
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- 230000002457 bidirectional effect Effects 0.000 claims abstract description 51
- 230000005856 abnormality Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 description 17
- 230000006870 function Effects 0.000 description 11
- 230000002265 prevention Effects 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009499 grossing Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Classifications
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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
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- 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
- H02J1/10—Parallel operation of dc sources
- H02J1/108—Parallel operation of dc sources using diodes blocking reverse current flow
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- 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
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- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
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- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/50—Charging of capacitors, supercapacitors, ultra-capacitors or double layer capacitors
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- 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
-
- 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
-
- 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
- H02J9/061—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 for DC powered loads
Definitions
- the present disclosure relates to power supply devices and electric devices.
- an electric latch system that uses an electric actuator to release the latch is beginning to be adopted.
- the voltage supplied to the electric actuator is normally supplied from the main power supply of the vehicle.
- vehicle doors are required to be unlockable even in an emergency such as an accident. Therefore, the electric latch system is often provided with a standby power supply so that the electric actuator can continue to operate for a certain period of time even if the power supply from the main power supply to the electric actuator is interrupted in an emergency such as an accident.
- the voltage supplied to the load device such as the electric actuator may fluctuate.
- the present disclosure provides a power supply device capable of suppressing fluctuations in voltage supplied to a load device, and an electric device including the power supply device.
- a power storage device When the voltage of the power storage device drops to a first threshold, charging of the power storage device is started based on the input power from the power system of the vehicle, and the voltage of the power storage device reaches a second threshold higher than the first threshold.
- a charging circuit that stops charging the power storage device when it rises; a booster circuit that boosts the voltage of the power storage device; a control circuit for boosting the booster circuit so that a boost voltage higher than the voltage of the power storage device is supplied to the load device at a constant voltage; and an electric device comprising the power supply device.
- FIG. 4 is a timing chart showing an operation example of the power supply device according to the first embodiment; It is a figure which shows the structural example of an electric device provided with the power supply device which concerns on 2nd Embodiment.
- 9 is a timing chart showing an operation example of the power supply device according to the second embodiment; It is a figure which shows the structural example of an electric device provided with the power supply device which concerns on 3rd Embodiment.
- 9 is a timing chart showing an operation example of the power supply device according to the third embodiment; It is a figure which shows the structural example of an electric device provided with the power supply device which concerns on 4th Embodiment. It is a timing chart which shows the operation example of the power supply device which concerns on 4th Embodiment. It is the table
- FIG. 1 is a diagram showing a configuration example of an electric device provided with a power supply device according to the first embodiment.
- the electric device 101 shown in FIG. 1 is mounted on a vehicle such as an automobile, and is a device that operates a load device 200 based on input power from a power system 90 of the vehicle.
- the electric power system 90 includes, for example, a main power supply mounted on the vehicle (for example, a 12-volt DC battery) and a power harness connecting between the main power supply and power terminals of the electric device 101 .
- the main power supply may be a converter.
- the electric device 101 includes a load device 200 and a power supply device 1 .
- the load device 200 is a device that controls the operation of a user-operated accessory (for example, an opening/closing member such as a door), and is operated by DC power supplied from the power supply device 1 .
- the load device 200 has a drive circuit 220 and a load 210 .
- the drive circuit 220 is a driver that operates with DC power supplied from the power supply device 1 and drives the load 210 .
- the load 210 is a device, such as a motor, that can control the operation of a user-operated accessory.
- a specific example of the drive circuit 220 is an H-bridge circuit.
- the electric device 101 is, for example, an electric latch device that uses an electric actuator to release a latch that is a mechanical lock mechanism for opening and closing bodies such as vehicle doors.
- An opening/closing member such as a vehicle door is an example of equipment operated by a user, and is opened/closed by a user's operation using a door handle, a remote control, a contact sensor, a non-contact sensor, or the like.
- the load 210 is, for example, a motor in an electric actuator that performs a latch release operation.
- the electric device 101 is not limited to the electric latch device.
- the electric device 101 may be an electric brake device that performs the braking operation of the brake mechanism of the vehicle by an electric actuator.
- a brake mechanism is an example of equipment operated by a user, and is operated by a user's operation using a brake pedal or the like.
- the electric device 101 may be an electric retractor device that uses an electric motor to retract the seat belt of the vehicle.
- a seat belt is an example of a user-operated accessory, and is put in and taken out by the user's operation.
- the power supply device 1 generates power to be supplied to the load device 200 based on the power supplied from the power system 90 .
- the power supply device 1 includes a power storage device 10 that stores power supplied from the power system 90 so that power can be continuously supplied to the load device 200 for a certain period of time even if the power supply from the power system 90 is interrupted. .
- the power supply device 1 includes a power storage device 10 , an equalization circuit 40 , a power supply path 80 , a bidirectional buck-boost converter 60 , a regulator 51 , a diode 52 and a control circuit 50 .
- the power storage device 10 is a device that stores electricity.
- the power storage device 10 has at least one cell (two cells 11 and 12 connected in series in this example).
- the cells 11 and 12 are elements that store electricity, and are, for example, electric double layer capacitors (so-called supercapacitors).
- the power storage device 10 may be a secondary battery such as a nickel-metal hydride battery.
- the equalization circuit 40 performs equalization processing of the electricity storage device 10 (processing to equalize the voltages applied to each of the cells 11 and 12).
- the equalization circuit 40 has a plurality of resistors 41, 42 connected in series in this example. Resistors 41 and 42 have the same resistance value.
- a resistor 41 is an element connected in parallel with the cell 11 and a resistor 42 is an element connected in parallel with the cell 12 .
- the power supply path 80 is wiring having one end connected to the power system 90 and the other end connected to the output node 65 side of the bidirectional buck-boost converter 60 .
- a backflow prevention circuit 81 prevents a current from flowing back from output node 65 to power system 90 due to reverse connection of the main power supply or the like.
- Overcurrent protection circuit 82 prevents overcurrent from power system 90 to output node 65 .
- Bidirectional buck-boost converter 60 has a boosting function of boosting voltage Vc of power storage device 10 and outputting to output node 65 a voltage Vb higher than voltage Vc, and a boosting function of stepping down voltage Vb of output node 65 to be higher than voltage Vb. and a step-down function of outputting a low voltage Vc to the storage device 10 .
- the boosting function causes discharge from the storage device 10 , and Vb (also referred to as “boost voltage”) higher than the voltage Vc of the storage device 10 can be supplied as the power supply voltage of the load device 200 . Due to the step-down function, the power storage device 10 can be charged with a voltage lower than the voltage Vb of the output node 65 .
- bidirectional buck-boost converter 60 is a bidirectional DC/DC converter in which a booster circuit that boosts voltage Vc of power storage device 10 and a charging circuit that charges power storage device 10 are integrated.
- the bidirectional buck-boost converter 60 may have a known circuit configuration, and in this example has an inductor 61 , switching elements 62 and 63 and a smoothing capacitor 64 .
- the switching elements 62 and 63 are, for example, semiconductor elements, and a specific example is a MOSFET (Metal Oxide Semiconductor Field Effect Transistor) having a parasitic diode.
- the regulator 51 is a circuit that generates a power supply voltage Vd for the control circuit 50 based on power supplied from either the power system 90 or the power storage device 10 . Thereby, even if the power supply from the power system 90 is interrupted, the regulator 51 can generate the power supply voltage Vd of the control circuit 50 based on the power supply from the power storage device 10 . Further, by providing the regulator 51, even if the voltage Va input from the power system 90 or the voltage Vc of the storage device 10 fluctuates, the power supply voltage Vd of the control circuit 50 can be kept constant.
- the regulator 51 controls the control circuit 50 based on the higher one of the voltage Va input from the electric power system 90 and the voltage Vc of the power storage device 10 (strictly speaking, considering the forward voltage of the diode 52). of power supply voltage Vd.
- Regulator 51 is, for example, a low dropout regulator.
- the diode 52 is an element whose anode is connected to the output side of the electricity storage device 10 and whose cathode is connected to the input side of the regulator 51 . Diode 52 can prevent reverse current flow from power supply path 80 to power storage device 10 .
- the control circuit 50 causes the bidirectional buck-boost converter 60 to perform a step-up operation so that the voltage Vb higher than the voltage Vc of the power storage device 10 is supplied to the load device 200 at a constant voltage.
- the control circuit 50 performs feedback control to switch the switching element 62 so that the voltage Vb of the output node 65 is maintained at a predetermined constant voltage, thereby supplying the constant voltage Vb to the drive circuit 220 of the load device 200. can be supplied to
- control circuit 50 Based on the power input from the output node 65 via the power supply path 80, the control circuit 50 causes the bidirectional buck-boost converter 60 to charge so that the power storage device 10 is charged.
- the control circuit 50 switches the switching element 63 to charge the bidirectional buck-boost converter 60 .
- control circuit 50 charges bidirectional buck-boost converter 60 when voltage Vc of power storage device 10 drops to first threshold Vth1, and bidirectional buck-boost converter 60 charges when voltage Vc rises to second threshold Vth2. to stop the charging operation.
- the fluctuation range of the voltage Vc of the power storage device 10 can be suppressed to the first threshold value Vth1 or more and the second threshold value Vth2 or less.
- the second threshold Vth2 is set to a value larger than the first threshold Vth1 and smaller than the normal voltage Va from the power system 90 .
- the second threshold Vth2 is set to about 5 volts
- the first threshold Vth1 is set to about 3 volts.
- the control circuit 50 acquires an operation detection signal S that represents the operation state of the equipment by the user.
- the operation detection signal S indicates the presence or absence of user's operation by a door handle, a remote controller, a contact sensor, a non-contact sensor, or the like.
- the control circuit 50 is, for example, a microcomputer having a processor such as a memory and a CPU (Central Processing Unit).
- the functions of the control circuit 50 are implemented by the processor operating according to the programs stored in the memory.
- the functions of the control circuit 50 may be realized by FPGA (Field Programmable Gate Array) or ASIC (Application Specific Integrated Circuit).
- FIG. 2 is a timing chart showing an operation example of the power supply device according to the first embodiment.
- the abnormal state is a state in which power supply from the power system 90 to the electric device 101 is cut off due to a failure of the power system 90 or the like, or a state in which an emergency signal such as vehicle collision detection is issued in an emergency such as an accident. show.
- the abnormal state corresponds to the high level period in FIG. 2 (the same applies to other timing charts described later).
- Timings a, b, c, d, and e are normal.
- Timings f, g, h, i, j, k, l, and m are abnormal.
- the control circuit 50 causes the bidirectional step-up/step-down converter 60 to perform step-up operation when an accessory such as a door is being operated.
- the control circuit 50 stops the step-up operation of the bidirectional step-up/step-down converter 60 when the equipment such as the door is not operated. For example, regardless of whether the control circuit 50 is normal or abnormal (without monitoring an emergency signal), when an operation detection signal S indicating that an accessory such as a door is being operated is input, The bidirectional buck-boost converter 60 is operated to boost.
- the control circuit 50 may start the step-up operation of the bidirectional step-up/step-down converter 60 when the operation of the equipment is detected by the operation detection signal S.
- the control circuit 50 may stop the step-up operation of the bidirectional step-up/step-down converter 60 when a predetermined stop condition is satisfied after the operation of the accessory is detected.
- Predetermined stop conditions include, for example, when a state in which the operation of the equipment has stopped or is deemed to have stopped is detected, or when a predetermined time has elapsed since the operation of the equipment was detected.
- the predetermined stop condition may be when the operation of the accessory is no longer detected by the operation detection signal S.
- control circuit 50 steps down the voltage of the bidirectional buck-boost converter 60 according to the magnitude of the voltage Vc of the power storage device 10 while the engine is ON (in operation), regardless of whether or not the equipment is operated. Switches whether to operate (charging operation) or not. Control circuit 50 starts the charging operation of bidirectional buck-boost converter 60 when voltage Vc of power storage device 10 drops to first threshold Vth1, and bidirectional buck-boost converter 60 starts charging when voltage Vc rises to second threshold Vth2. to stop the charging operation.
- the control circuit 50 controls the bidirectional buck-boost converter even if the operation of the equipment is detected by the operation detection signal S. 60 charging operation may be forced to start.
- the control circuit 50 causes the bidirectional buck-boost converter 60 to operate as a buck converter (charging circuit), and charges the power storage device 10 until the voltage Vc rises to the second threshold Vth2. do. Due to the charging operation, voltage Vc of power storage device 10 gradually increases.
- the control circuit 50 converts the bidirectional buck-boost converter 60 into a boost converter (boost circuit) using the power storage device 10 as a power source.
- Control circuit 50 boosts voltage Vb supplied to load device 200 by operating bidirectional buck-boost converter 60 so that voltage Vb higher than voltage Vc of power storage device 10 is supplied to load device 200 at a constant voltage. fluctuation can be suppressed. Due to the boosting operation, the voltage Vc of the electric storage device 10 gradually decreases.
- the control circuit 50 stops the step-up operation of the bidirectional step-up/step-down converter 60 .
- the control circuit 50 causes the bidirectional buck-boost converter 60 to operate as a buck converter so that the power storage device 10 is charged.
- Control circuit 50 stops the charging operation of bidirectional buck-boost converter 60 when voltage Vc rises to second threshold value Vth2.
- Timings f, g, h, and i are abnormal. During this period, the voltage Vc is higher than the first threshold Vth1 (not lowered to the first threshold Vth1), and the operation of the equipment such as the door is not detected by the operation detection signal S. Therefore, the control circuit 50 The charging operation and boosting operation of the bidirectional buck-boost converter 60 are stopped.
- the control circuit 50 converts the bidirectional buck-boost converter 60 into a boost converter (boost circuit) using the power storage device 10 as a power source.
- Control circuit 50 boosts voltage Vb supplied to load device 200 by operating bidirectional buck-boost converter 60 so that voltage Vb higher than voltage Vc of power storage device 10 is supplied to load device 200 at a constant voltage. fluctuation can be suppressed. Due to the boosting operation, the voltage Vc of the electric storage device 10 gradually decreases.
- control circuit 50 stops the step-up operation of the bidirectional step-up/step-down converter 60 . If voltage Vc has not decreased to first threshold value Vth, control circuit 50 does not operate bidirectional buck-boost converter 60 as a buck converter, and maintains the boost operation stopped state. Thereby, the voltage Vc of the electric storage device 10 is kept constant.
- the control circuit 50 supplies the constant boost voltage higher than the voltage Vc of the power storage device 10 to the load device 200 regardless of whether the power system 90 fails or is in an emergency.
- the bidirectional buck-boost converter 60 is operated to boost as follows. Thereby, a constant voltage can be supplied to the load device 200 even if the voltage of the power system 90 or the power storage device 10 fluctuates.
- FIG. 3 is a diagram showing a configuration example of an electric device provided with a power supply device according to the second embodiment.
- descriptions of the same configurations, actions, and effects as in the first embodiment are omitted or simplified by citing the above descriptions.
- the electric device 102 shown in FIG. 3 includes a power supply device 2 and a load device 200.
- the power supply device 2 differs from the first embodiment in that it includes diodes 71 and 72, a charging circuit 20, and a booster circuit 30.
- FIG. In other words, the power supply device 2 according to the second embodiment is not a buck-boost converter in which the charging circuit (step-down circuit) and the step-up circuit are integrated, but has the charging circuit (step-down circuit) and the step-up circuit separately.
- each configuration (backflow prevention circuit 81, overcurrent prevention circuit 82, resistor 83, equalization circuit 40, regulator 51, diode 52) shown in FIG. 1 is not shown in FIG.
- the power supply device 2 according to the second embodiment may include some or all of these configurations (the same applies to other embodiments described later).
- diode 71 is inserted in power supply path 80 to prevent backflow from output node 65 to power system 90 .
- Diode 72 prevents reverse current from output node 65 to booster circuit 30 .
- Diodes 71 and 72 form a diode OR circuit.
- the diode 72 may be omitted because the diode 33 in the booster circuit 30 is present.
- the existence of the diode 72 can protect the smoothing capacitor 34 in the booster circuit 30 from overvoltage. Even without the diode 72 , when the power input from the power system 90 is cut off, the power supply path to the load device 200 automatically switches from the power supply path 80 to the booster circuit 30 .
- the charging circuit 20 has a step-down function (charging function) of stepping down the voltage Va input from the power system 90 and charging the power storage device 10 with a voltage Vc lower than the voltage Va.
- the charging circuit 20 starts charging the power storage device 10 based on the input power from the power system 90 when the voltage Vc of the power storage device 10 drops to the first threshold value Vth1.
- the charging circuit 20 stops charging the power storage device 10 when the voltage Vc of the power storage device 10 rises to a second threshold Vth2 higher than the first threshold Vth1.
- the charging circuit 20 may monitor the voltage Vc by itself and perform the charging operation independently without receiving a command from the control circuit 50 , or may perform the charging operation according to the command from the control circuit 50 .
- the charging circuit 20 may have a known circuit configuration.
- the booster circuit 30 has a boosting function of boosting the voltage Vc of the power storage device 10 and outputting a voltage Vb higher than the voltage Vc to the output node 65 .
- the booster circuit 30 may have a known circuit configuration, and has an inductor 31, a switching element 32, a diode 33 and a smoothing capacitor 34 in this example.
- the switching element 32 is, for example, a semiconductor element, and a specific example thereof is a MOSFET having a parasitic diode.
- the control circuit 50 always operates the booster circuit 30 so that the voltage Vb is lower than the voltage Va of the power supply path 80 . As a result, power can be supplied from the power system 90 to the load device 200 via the power supply path 80 in a normal state.
- control circuit 50 acquires (monitors) an emergency signal E such as vehicle collision detection.
- the control circuit 50 may acquire (monitor) an operation detection signal S representing the operation state of the equipment by the user.
- FIG. 4 is a timing chart showing an operation example of the power supply device according to the second embodiment.
- the control circuit 50 always operates the booster circuit 30 so that the voltage Vb is lower than the voltage Va of the power supply path 80 .
- power can be supplied from the power system 90 to the load device 200 via the power supply path 80 in a normal state. Therefore, the operating power generated in the load device 200 as the equipment is operated in the normal state (timings c and d) is covered by the power supplied from the power system 90 via the power supply path 80 . Voltage Vc of power storage device 10 is maintained.
- the control circuit 50 when the vehicle abnormality is detected by the emergency signal E at the timing f, the control circuit 50 starts the boosting operation of the booster circuit 30 so that current is supplied from the booster circuit 30 to the load device 200.
- the control circuit 50 causes the booster circuit 30 to start operating in intermittent operation or PFM operation, and when the operation of the equipment is detected by the operation detection signal S at the timing j. , the step-up circuit 30 is switched to PWM operation.
- the control circuit 50 may switch the operation of the booster circuit 30 from the PWM operation to the intermittent operation or the PFM operation when a predetermined stop condition is satisfied at timing l after the operation of the equipment such as the door is detected.
- the control circuit 50 may continue the operation of the booster circuit 30 by intermittent operation or PFM operation even after the timing m when the engine is turned off.
- PFM Pulse Frequency Modulation
- PWM Pulse Wide Modulation
- PWM Pulse Wide Modulation
- the booster circuit 30 has already started at the timing f before the equipment operation is detected at the timing j.
- the waiting time from operation of the equipment to movement of the load device 200 (for example, from operation of the door to release of the latch) can be reduced.
- FIG. 5 is a diagram showing a configuration example of an electric device provided with a power supply device according to the third embodiment.
- the third embodiment descriptions of the same configurations, actions, and effects as in the first and second embodiments are omitted or simplified by citing the above descriptions.
- the electric device 103 shown in FIG. 5 includes a power supply device 3 and a load device 200.
- the power supply device 3 differs from the first embodiment in that it includes a charging circuit 20 and a booster circuit 30 and does not include a power supply path 80 .
- FIG. 6 is a timing chart showing an operation example of the power supply device according to the third embodiment.
- current is always supplied from the booster circuit 30 to the load device 200 in both normal and abnormal conditions.
- the control circuit 50 activates the booster circuit 30 immediately after the power input from the power system 90 is started, and continuously operates the booster circuit 30 so that current is always supplied from the booster circuit 30 to the load device 200 .
- Boost operation is performed during operation.
- the control circuit 50 causes the booster circuit 30 to perform the boosting operation so that the current is supplied from the booster circuit 30 to the load device 200, the vehicle abnormality is detected by the emergency signal E at the timing f, the booster circuit 30 is switched to intermittent operation or PFM operation.
- the control circuit 50 switches the booster circuit 30 to PWM operation.
- FIG. 7 is a diagram showing a configuration example of an electric device provided with a power supply device according to the fourth embodiment.
- the fourth embodiment descriptions of configurations, functions and effects similar to those of the first, second and third embodiments will be omitted or simplified by citing the above descriptions.
- the electric device 104 shown in FIG. 7 includes the power supply device 4 and the load device 200 .
- the power supply device 4 differs from the first embodiment in that it includes a diode 71 .
- FIG. 8 is a timing chart showing an operation example of the power supply device according to the fourth embodiment.
- the control circuit 50 activates the bidirectional buck-boost converter 60 in the charge mode immediately after the start of power input from the power system 90, and operates the bidirectional buck-boost converter 60 as a buck converter (charging circuit). Let If voltage Vc is lower than first threshold Vth1, control circuit 50 charges power storage device 10 until voltage Vc rises to second threshold Vth2. Due to the charging operation, voltage Vc of power storage device 10 gradually increases. Control circuit 50 stops the charging operation of bidirectional buck-boost converter 60 when voltage Vc rises to second threshold value Vth2.
- the control circuit 50 switches the bidirectional buck-boost converter 60 from the charge mode to the boost mode, and boosts the bidirectional buck-boost converter 60. Operate as a converter (booster circuit).
- the control circuit 50 switches the bidirectional buck-boost converter 60 from the charge mode to the boost mode, and operates the bidirectional buck-boost converter 60 as a boost converter (booster circuit).
- control circuit 50 normally operates the bidirectional buck-boost converter 60 in the charging mode.
- the power input via the power supply path 80 can be supplied to both the bidirectional buck-boost converter 60 and the load device 200 in the normal state.
- FIG. 9 shows a table summarizing the above operation examples of each embodiment.
- Voltage step-down ON or charge ON represents execution of voltage step-down operation (charge operation)
- voltage step-down OFF or charge OFF represents stop of voltage step-down operation (charge operation).
- Boosting ON indicates execution of the boosting operation
- Boosting OFF indicates stopping the boosting operation.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
Description
蓄電デバイスと、
前記蓄電デバイスの電圧が第1閾値まで低下すると、車両の電力系統からの入力電力に基づいて前記蓄電デバイスの充電を開始し、前記蓄電デバイスの電圧が前記第1閾値よりも高い第2閾値まで上昇すると、前記蓄電デバイスの充電を停止する充電回路と、
前記蓄電デバイスの電圧を昇圧する昇圧回路と、
前記蓄電デバイスの電圧よりも高いブースト電圧が一定電圧で負荷装置に供給されるように前記昇圧回路を昇圧動作させる制御回路と、を備える、電源装置、及び当該電源装置を備える電動装置が提供される。
10 蓄電デバイス
11,12 セル
20 充電回路
30 昇圧回路
40 等化回路
41,42 抵抗
50 制御回路
51 レギュレータ
52 ダイオード
60 双方向昇降圧コンバータ
65 出力ノード
71,72 ダイオード
80 電源経路
81 逆流防止回路
82 過電流防止回路
83 抵抗
90 電力系統
101,102,103,104 電動装置
200 負荷装置
210 負荷
220 駆動回路
Claims (19)
- 蓄電デバイスと、
前記蓄電デバイスの電圧が第1閾値まで低下すると、車両の電力系統からの入力電力に基づいて前記蓄電デバイスの充電を開始し、前記蓄電デバイスの電圧が前記第1閾値よりも高い第2閾値まで上昇すると、前記蓄電デバイスの充電を停止する充電回路と、
前記蓄電デバイスの電圧を昇圧する昇圧回路と、
前記蓄電デバイスの電圧よりも高いブースト電圧が一定電圧で負荷装置に供給されるように前記昇圧回路を昇圧動作させる制御回路と、を備える、電源装置。 - 前記電力系統に一端が接続され前記ブースト電圧の出力ノード側に他端が接続された電源経路を備える、請求項1に記載の電源装置。
- 前記昇圧回路は、前記充電回路を備える双方向昇降圧コンバータである、請求項2に記載の電源装置。
- 前記制御回路は、前記電源経路を経由して前記出力ノードから入力される電力に基づいて、前記蓄電デバイスが充電されるように前記双方向昇降圧コンバータを充電動作させる、請求項3に記載の電源装置。
- 前記制御回路は、前記蓄電デバイスの電圧が前記第1閾値まで低下すると、前記双方向昇降圧コンバータを充電動作させ、前記蓄電デバイスの電圧が前記第2閾値まで上昇すると、前記双方向昇降圧コンバータの充電動作を停止させる、請求項4に記載の電源装置。
- 前記負荷装置は、ユーザによって操作される装備品の作動を制御する装置であり、
前記制御回路は、前記装備品が操作されているとき、前記双方向昇降圧コンバータを昇圧動作させる、請求項3に記載の電源装置。 - 前記制御回路は、前記装備品が操作されていないとき、前記双方向昇降圧コンバータの昇圧動作を停止させる、請求項6に記載の電源装置。
- 前記制御回路は、前記車両の異常が検出されると、前記双方向昇降圧コンバータを充電モードから昇圧モードに切り替える、請求項3に記載の電源装置。
- 前記負荷装置は、ユーザによって操作される装備品の作動を制御する装置であり、
前記制御回路は、前記装備品の操作が検出されると、前記双方向昇降圧コンバータを充電モードから昇圧モードに切り替える、請求項3に記載の電源装置。 - 前記制御回路は、前記ブースト電圧が前記電源経路の電圧よりも低くなるように前記昇圧回路を運転する、請求項2に記載の電源装置。
- 前記制御回路は、前記車両の異常が検出されると、前記昇圧回路から前記負荷装置に電流が供給されるように前記昇圧回路の昇圧動作を開始させる、請求項10に記載の電源装置。
- 前記負荷装置は、ユーザによって操作される装備品の作動を制御する装置であり、
前記制御回路は、前記車両の異常が検出されると、前記昇圧回路を間欠動作又はPFM動作で運転を開始させ、前記装備品の操作が検出されると、前記昇圧回路をPWM動作での運転に切り替える、請求項11に記載の電源装置。 - 前記負荷装置は、ユーザによって操作される装備品の作動を制御する装置であり、
前記制御回路は、前記昇圧回路から前記負荷装置に電流が供給されるように前記昇圧回路を昇圧動作させているとき、前記車両の異常が検出されると、前記昇圧回路の昇圧動作を間欠動作又はPFM動作に切り替え、その後、前記装備品の操作が検出されると、前記昇圧回路の昇圧動作をPWM動作に切り替える、請求項1に記載の電源装置。 - 前記電力系統か前記蓄電デバイスかのどちらかから供給される電力に基づいて、前記制御回路の電源電圧を生成するレギュレータを備える、請求項1に記載の電源装置。
- 前記蓄電デバイスの出力側にアノードが接続され前記レギュレータの入力側にカソードが接続されたダイオードを備える、請求項14に記載の電源装置。
- 蓄電デバイスと、
車両の電力系統からの入力電力に基づいて前記蓄電デバイスを充電する充電回路と、
前記蓄電デバイスの電圧を昇圧する昇圧回路と、
前記電力系統の故障又は緊急時の如何によらず、前記蓄電デバイスの電圧よりも高いブースト電圧が一定電圧で負荷装置に供給されるように前記昇圧回路を昇圧動作させる制御回路と、を備える、電源装置。 - 請求項1に記載の電源装置と、前記負荷装置と、を備える、電動装置。
- 前記負荷装置は、ユーザによって操作される装備品の作動を制御する装置である、請求項17に記載の電動装置。
- 前記装備品は、開閉体である、請求項18に記載の電動装置。
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