WO2020203465A1 - Dispositif source de puissance - Google Patents

Dispositif source de puissance Download PDF

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Publication number
WO2020203465A1
WO2020203465A1 PCT/JP2020/013008 JP2020013008W WO2020203465A1 WO 2020203465 A1 WO2020203465 A1 WO 2020203465A1 JP 2020013008 W JP2020013008 W JP 2020013008W WO 2020203465 A1 WO2020203465 A1 WO 2020203465A1
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WO
WIPO (PCT)
Prior art keywords
voltage
generation circuit
conductor portion
circuit
switch element
Prior art date
Application number
PCT/JP2020/013008
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English (en)
Japanese (ja)
Inventor
日出光 渡邉
Original Assignee
株式会社デンソー
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Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Priority to DE112020001745.1T priority Critical patent/DE112020001745T5/de
Publication of WO2020203465A1 publication Critical patent/WO2020203465A1/fr

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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
    • 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
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • 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

Definitions

  • This disclosure relates to a power supply device.
  • a power supply device having an electric path connecting a storage battery and an electric device
  • on / off control of the connection between the storage battery and the electric device is generally performed by a switch using a semiconductor switching element or the like.
  • semiconductor switching elements in each of the paths arranged in parallel as switches and control each semiconductor switching element on and off at the same time.
  • semiconductor switching elements are provided in each of the paths arranged in parallel. Then, by supplying drive power to each semiconductor switching element from an individual power supply path, stabilization as a power supply is aimed at.
  • the lengths of the conductors that form the paths arranged in parallel may differ from each other due to the wiring space and the like.
  • the path of the path from each semiconductor switching element to a connector for external connection may vary.
  • the path length may differ due to the difference between the distance between the first semiconductor switching element and the connector and the distance between the second semiconductor switching element and the connector.
  • the path resistances of the paths are also different, and when the semiconductor switching elements connected in parallel are energized, the currents flowing in the parallel paths are different. Therefore, it is necessary to increase the margin of the current flowing in the path as a whole in accordance with the path on the side where the flowing current becomes large, and the permissible current of the entire path arranged in parallel may be reduced.
  • the present disclosure has been made in view of the above problems, and its main purpose is to provide a power supply device capable of passing an appropriate current through parallel paths.
  • the first means is a first conductor portion and a first conductor portion, which are conductor portions provided in parallel between the first point and the second point in an electric path for electrically connecting the storage battery and the electric device.
  • a switch having a two-conductor portion, a first switch element and a second switch element composed of a semiconductor switching element and connected in parallel by the first conductor portion and the second conductor portion, and the first switch element and the second switch.
  • a power supply device including a generation circuit for generating a voltage applied to each control terminal of an element, and turning on / off the first switch element and the second switch element to control a current flowing in the electric path.
  • the resistance value of the first conductor portion is higher than the resistance value of the second conductor portion, and the first voltage generated by the generation circuit and applied to the control terminal of the first switch element is the generation circuit. It is higher than the second voltage generated in the above and applied to the control terminal of the second switch element.
  • the first switch element and the configuration is such that the second switch element is turned on at the same time.
  • the resistance value of the conductor portion may be different between the paths.
  • the path resistance of the entire path is determined according to the resistance of the switch element and the resistance value of the conductor, and if the resistance of the conductor becomes uneven between the paths, the path resistance of the entire path also becomes uneven. .. Therefore, when the switch is turned on, that is, when the switch elements of the parallel paths are turned on, the currents flowing in each path become uneven.
  • the resistance of the first switch element can be made smaller than the resistance of the second switch element.
  • the resistance value of the conductor portion is different due to the difference in the path length or the like, it is possible to suppress the path resistance of the entire path from becoming uneven, and the current flowing in the parallel paths is uneven. Can be suppressed. Therefore, it is not necessary to set a large current margin according to the path having a large current, so that the allowable current of the entire path can be increased.
  • the second means has, as the generation circuit, a first generation circuit that generates the first voltage and a second generation circuit that generates the second voltage.
  • the generation circuits that generate the voltage applied to the control terminals are different between the first switch element and the second switch element, the voltage is generated individually in each generation circuit, and the voltage applied to each control terminal is different. Can be. Further, by generating the applied voltage of each switch element with a different generation circuit to make it redundant, even if the voltage cannot be applied to the first switch element due to the failure of the first generation circuit, the second The voltage application at the switch element can be continued. As a result, it is possible to stabilize the power supply.
  • the third means is to make at least one of the first generation circuit and the second generation circuit of the first voltage and the second voltage so that the first voltage is higher than the second voltage.
  • An adjustment circuit is provided to adjust at least one of them.
  • the adjustment circuit is configured to adjust at least one of the first voltage and the second voltage. As a result, by generating a voltage so that the first voltage is higher than the second voltage and applying it to the control terminal, it is possible to suppress the unevenness of the current flowing in the path.
  • the fourth means is that the generating circuit has a boosting circuit that generates a voltage by boosting at a predetermined operating frequency in a predetermined boosting period, and the adjusting circuit is within the allowable error range of the operating frequency.
  • the generated voltage of the boost circuit can be adjusted, and by adjusting the voltage within the voltage adjustment range corresponding to the allowable error range of the operating frequency, the first Perform voltage adjustment for at least one of the voltage and the second voltage.
  • the booster circuit boosting is performed at a predetermined operating frequency during a predetermined boosting period to generate a voltage. Even after mounting the components, the generated voltage can be adjusted by changing the number of boosts within the boost period with the adjustment circuit. Therefore, the voltage generated by the booster circuit can be changed by changing the number of boosts according to the individual deviations of the components and the like after mounting the components and the like.
  • the booster circuit has a deviation between the generated voltage and the target voltage due to a deviation within the allowable error range of the operating frequency, and in order to eliminate this deviation, the adjustment circuit has a number of boosts within the allowable error range. To change. Then, the generated voltage can be intentionally increased or decreased by changing the number of times of boosting in the boosting period by the adjusting circuit. As a result, unevenness of the current flowing in the path can be further suppressed by adjusting the first voltage or the second voltage after mounting the component or the like.
  • the first generation circuit is not provided with the adjustment circuit, while the second generation circuit is provided with the adjustment circuit, and the adjustment circuit provides the second voltage. Is adjusted to a voltage lower than the first voltage.
  • the second voltage is higher than the first voltage by adjusting the voltage within the voltage adjustment range by the second generation circuit provided with the adjustment circuit.
  • the voltage can be adjusted to be low.
  • the desired voltage adjustment can be preferably performed.
  • the sixth means is that the adjustment circuit is provided in the first generation circuit and the second generation circuit, and the permissible error range in each of the adjustment circuits in the first generation circuit and the second generation circuit. At least one of the first voltage and the second voltage is adjusted by changing the operating frequency within.
  • Adjustment circuits are provided in the first generation circuit and the second generation circuit, respectively. Therefore, for example, in the first generation circuit, the operating frequency is raised within the allowable error range, and in the second generation circuit, the operating frequency is lowered within the allowable error range, thereby limiting the voltage adjustment range within the allowable error range of the operating frequency.
  • the possible range of voltage adjustment can be expanded.
  • the detection unit that detects the current flowing through the first conductor portion and the second conductor portion, respectively, and the current of each of the conductor portions match based on the detected current flowing through each of the conductor portions.
  • a voltage control unit that controls at least one of the first voltage and the second voltage is provided.
  • the first voltage and the second are so that the currents flowing through the first and second conductors match based on the currents flowing through the first and second conductors. Control at least one of the voltages.
  • the eighth means is a first conductor portion and a first conductor portion provided in parallel with each other as conductor portions between the first point and the second point in an electric path for electrically connecting the storage battery and the electric device.
  • a switch having two conductors, a first switch element and a second switch element composed of a semiconductor switching element and connected in parallel by the first conductor part and the second conductor part, and a control terminal of the first switch element.
  • a first generation circuit for generating a voltage to be generated and a second generation circuit for generating a voltage applied to a control terminal of the second switch element are provided, and the first switch element and the second switch element are turned on and off.
  • a power supply device that controls the current flowing in the electric path, the voltage generated by the first generation circuit is higher than the voltage generated by the second generation circuit, and the resistance value of the first conductor portion. Is adjusted to be larger than the resistance value of the second conductor portion.
  • the voltage applied to the control terminal of the switch element By generating the voltage applied to the control terminal of the switch element with a different generation circuit, redundancy may be achieved and stabilization as a power source may be achieved. On the other hand, if the generation source of the voltage applied to the control terminal is different, the voltage applied to the control terminal may be different and the resistance of the switch element may be different. Therefore, the path resistance of the entire path becomes uneven, and the current flowing in the parallel path becomes uneven.
  • the first switch element having a high voltage generated by the generation circuit is used by adding a resistor to the conductor portion such as the bus bar of the path so as to suppress the current flowing in each path from becoming uneven.
  • the structure is adjusted so that the resistance value of one conductor portion is increased.
  • FIG. 1 is a schematic configuration diagram of a power supply system.
  • FIG. 2 is a schematic configuration diagram of a switch and its peripheral circuit in the battery unit.
  • FIG. 3 is a diagram showing a first voltage and a second voltage applied to the gate terminal.
  • the power supply system S includes a lead storage battery 11 and a lithium ion storage battery 12.
  • the storage batteries 11 and 12 can supply power to the starter 13, the rotary electric machine 14, and various electric loads 15. Further, each of the storage batteries 11 and 12 can be charged by the rotary electric machine 14.
  • the lead storage battery 11 and the lithium ion storage battery 12 are connected in parallel to the rotary electric machine 14, and the lead storage battery 11 and the lithium ion storage battery 12 are connected in parallel to the electric load 15.
  • the lead storage battery 11 corresponds to the "storage battery” and the rotary electric machine 14 corresponds to the "electrical device".
  • the lead storage battery 11 is a well-known general-purpose storage battery.
  • the lithium ion storage battery 12 is a high-density storage battery having a smaller power loss during charging / discharging, a higher output density, and a higher energy density than the lead storage battery 11.
  • the lithium ion storage battery 12 is preferably a storage battery having higher energy efficiency during charging / discharging than the lead storage battery 11.
  • the lithium ion storage battery 12 is configured as an assembled battery each having a plurality of cell cells. The rated voltage of each of these storage batteries 11 and 12 is the same, for example, 12V.
  • the lithium ion storage battery 12 is housed in a storage case and is configured as a battery unit U integrated with a substrate.
  • the battery unit U is shown surrounded by a broken line.
  • the battery unit U has external terminals P0, P1 and P2, of which the lead-acid battery 11 and the starter 13 are connected to the external terminal P0 via wiring, and the rotary electric machine 14 is connected to the external terminal P1 via wiring. It is connected, and the electric load 15 is connected to the external terminal P2 via wiring.
  • the external terminal P0 is connected to the lead-acid battery 11 via the fuse 16, and the external terminal P2 is connected to the electric load 15 via the fuse 17.
  • the battery unit U corresponds to the "power supply device".
  • the rotary electric machine 14 is a generator with a motor function having a three-phase AC motor and an inverter as a power conversion device, and is configured as an ISG (Integrated Starter Generator) integrated with mechanical and electrical power.
  • the rotary electric machine 14 has a power generation function of generating power (regenerative power generation) by rotating the engine output shaft and the axle, and a power running function of applying a rotational force to the engine output shaft.
  • the power running function of the rotary electric machine 14 makes it possible to apply a rotational force to the engine when the engine that is automatically stopped is restarted during idling stop.
  • the rotary electric machine 14 supplies the generated electric power to the storage batteries 11 and 12 and the electric load 15.
  • the electric load 15 includes a constant voltage load in which the voltage of the supplied power is required to be constant or fluctuate within a predetermined range.
  • Specific examples of the electric load 15 which is a constant voltage required load include various ECUs such as a navigation device, an audio device, and an engine ECU. In this case, by suppressing the voltage fluctuation of the supplied power, unnecessary resets and the like are suppressed in each of the above devices, and stable operation can be realized.
  • the electric load 15 may include a traveling system actuator such as an electric steering device or a braking device.
  • an electric path in the battery unit U an electric path L1 connecting the external terminals P0 and P1 and an electric path L2 connecting the connection point N1 on the electric path L1 and the lithium ion storage battery 12 are provided.
  • the switch SW1 is provided in the electric path L1
  • the switch SW2 is provided in the electric path L2.
  • the electric paths L1 and L2 are large current paths assuming that an input / output current is passed through the rotary electric machine 14, and the mutual storage batteries 11 and 12 and the rotary electric machine 14 pass through the electric paths L1 and L2. Is energized.
  • conductor portions are provided in parallel with each other between the branch point N21 and the branch point N22.
  • Two MOSFETs 43 are provided as semiconductor switching elements connected in parallel by each conductor portion. Then, in each conductor portion, the parasitic diodes of two sets of MOSFETs are connected in series so as to be opposite to each other.
  • connection point N2 (the point between the external terminal P0 and the switch SW1) on the electric path L1 and the external terminal P2 are connected. It has an electrical path L3.
  • the electric path L3 forms a path that enables power to be supplied from the lead-acid battery 11 to the electric load 15.
  • a switch SW3 is provided in the electric path L3 (specifically, between the connection point N2-connection point N4).
  • connection point N3 of the electric path L2 (the point between the switch SW2 and the lithium ion storage battery 12) and the connection point N4 on the electric path L3 (the point between the switch SW3 and the external terminal P2) , Is provided with an electric path L4 for connecting.
  • the electric path L4 forms a path that enables power to be supplied from the lithium ion storage battery 12 to the electric load 15.
  • a switch SW4 is provided in the electric path L4 (specifically, between the connection points N3- and the connection points N4).
  • Each switch SW3 and SW4 is provided with a set of two semiconductor switching elements.
  • the semiconductor switching element is a MOSFET, and the parasitic diodes of the two sets of MOSFETs are connected in series so as to be opposite to each other.
  • the semiconductor switching element used for the switches SW3 and SW4 it is also possible to use an IGBT, a bipolar transistor, or the like instead of the MOSFET.
  • a diode instead of the parasitic diode may be connected in parallel.
  • the battery unit U includes a control unit 21 that controls each switch SW1 to SW4.
  • the control unit 21 is composed of a microcomputer including a CPU, a ROM, a RAM, an input / output interface, and the like.
  • the control unit 21 controls the switches SW1 to SW4 and the like based on the storage state and the like of the storage batteries 11 and 12. For example, the control unit 21 calculates the SOC (residual capacity: State Of Charge) of the lithium ion storage battery 12. Then, the control unit 21 controls each of the switches SW1 to SW4 so that the SOC is maintained within a predetermined range of use, outputs an open / close command signal, and charges the lead storage battery 11 and the lithium ion storage battery 12. Control the discharge. That is, the control unit 21 selectively uses the lead storage battery 11 and the lithium ion storage battery 12 to charge and discharge.
  • SOC residual capacity: State Of Charge
  • control unit 21 is connected to, for example, an ECU 22 including an engine ECU.
  • the ECU 22 is composed of a microcomputer including a CPU, ROM, RAM, an input / output interface, and the like, and controls the operation of the engine based on the engine operating state and the vehicle running state each time.
  • the control unit 21 and the ECU 22 are connected by a communication network such as CAN so that they can communicate with each other, and various data stored in the control unit 21 and the ECU 22 can be shared with each other.
  • FIG. 2 is a schematic configuration diagram showing the switch SW1 and its peripheral circuits in the battery unit U.
  • a first conductor portion 31 and a second conductor portion 32 provided in parallel with each other are provided as conductor portions between the branch point N11 and the branch point N12. Further, in the electric path L1, a common conductor portion 33 is provided as a conductor portion between the external terminal P0 and the branch point N11, and a common conductor portion is provided as a conductor portion between the external terminal P1 and the branch point N12. 34 is provided.
  • Each conductor portion 31 to 34 is composed of a bus bar or the like.
  • the branch point N11 corresponds to the "first point”
  • the branch point N12 corresponds to the "second point".
  • the switch SW1 has a first switch portion 41 and a second switch portion 42 connected in parallel by the first conductor portion 31 and the second conductor portion 32.
  • Each of the switch units 41 and 42 is provided with two MOSFETs 43 as semiconductor switching elements. Then, the parasitic diodes of the two sets of MOSFETs 43 are connected in series so as to be opposite to each other.
  • Each MOSFET 43 is a well-known n-type MOSFET for high power, is a normally open type semiconductor switching element, and includes a gate terminal 43a which is a control terminal.
  • the first switch unit 41 corresponds to the "first switch element”
  • the second switch unit 42 corresponds to the "second switch element".
  • each detection unit 45 detects the current flowing through the conductor units 31 and 32, respectively.
  • the detection result of the detection unit 45 is output to the control unit 21, and the control unit 21 monitors an overcurrent or the like based on the detection result.
  • the first voltage V1 is applied from the first drive circuit 50 to the gate terminal 43a of each MOSFET 43 of the first switch unit 41.
  • the first drive circuit 50 is provided with an application circuit 51 that applies a voltage to the gate terminal 43a of the MOSFET 43 in response to a command from the control unit 21.
  • a voltage applied to the gate terminal 43a from the first generation circuit 52 is supplied to the application circuit 51.
  • the first generation circuit 52 includes a booster circuit 53, which is a charge pump circuit, and a periodic circuit 54 that supplies a clock signal to the booster circuit 53.
  • the periodic circuit 54 is a circuit for generating a clock signal and supplying it to the booster circuit 53.
  • the clock signal generated by the periodic circuit 54 has a tolerance (tolerance).
  • the clock signal generated by the periodic circuit 54 becomes the operating frequency f1 of the booster circuit 53.
  • the booster circuit 53 is an electronic circuit for raising the voltage by combining a plurality of capacitors and switches, and the on / off timings of the plurality of switches are synchronized with the operating frequency f1. That is, the number of boosts in a predetermined boost period is determined based on the operating frequency f1. If the operating frequency f1 deviates from the target frequency due to the tolerance of the periodic circuit 54, the number of boosts in a predetermined boosting period deviates, and the generated voltage deviates.
  • a second voltage V2 is applied from the second drive circuit 60 to the gate terminal 43a of each MOSFET 43 of the second switch unit 42.
  • the second drive circuit 60 includes an application circuit 61 that applies a voltage to the gate terminal 43a of the MOSFET 43 and a voltage applied to the gate terminal 43a of the application circuit 61 by a command from the control unit 21.
  • a second generation circuit 62 is provided.
  • the second generation circuit 62 includes a booster circuit 63, which is a charge pump circuit, and a periodic circuit 64, which supplies a clock signal to the booster circuit 63.
  • a calibration circuit 65 for calibrating the clock signal generated by the periodic circuit 64 is provided.
  • the calibration circuit 65 corresponds to the “adjustment circuit”.
  • the calibration circuit 65 changes the operating frequency f2 based on the clock signal generated by the periodic circuit 64.
  • the clock signal generated by the periodic circuit 64 is calibrated by a well-known method based on the frequency from the outside.
  • the clock signal generated by the periodic circuit 64 has a tolerance (tolerance). Therefore, for example, the frequency from the outside is compared with the value based on the generated clock signal, and the number of cycles of the clock frequency generated by the cycle circuit 64 is set to the number of cycles of the operating frequency f2. Adjust with.
  • the operating frequency f2 is calibrated so as to approach the target frequency.
  • the operating frequency f2 is changed so as to reach the target frequency within the permissible error range. As a result, the number of boosts in the predetermined boost period is adjusted.
  • the function of changing the operating frequency f2 in the calibration circuit 65 is performed after mounting each component and before shipping in the factory. In this way, by calibrating the operating frequency f2 after mounting and adjusting the number of boosts, the number of boosts can be adjusted according to individual variations of parts, etc., and the generated voltage can be adjusted within the voltage adjustment range. Can be done. Further, it is desirable that the target frequency can be changed based on the command from the control unit 21. When calibrating and changing the operating frequency f2, it is preferable to lower the frequency generated by the periodic circuit 64 rather than raising it.
  • a configuration for directly adjusting the number of boosts may be provided as an adjustment circuit.
  • the generated clock frequency may be used as it is as the operating frequency f2
  • the number of boosts may be adjusted by thinning out so that the switch is not turned on and off at the operating frequency f2.
  • the applied voltage of each of the switch units 41 and 42 is generated by each of the generation circuits 52 and 62 to make it redundant, so that the voltage is applied to the first switch unit 41 due to the failure of the first generation circuit 52. Even if this becomes impossible, the voltage can be generated by the second generation circuit 62 and the voltage application by the second switch unit 42 can be continued. As a result, it is possible to stabilize the power supply.
  • the external terminal P0 and the external terminal P1 are provided, for example, in a connector fixed to the case of the battery unit U, and the positions of the first conductor portion 31 and the second conductor portion 32 in the case.
  • the path lengths of the first conductor portion 31 and the second conductor portion 32 that is, the path lengths between the branch point N11 and the branch point N12 are uneven.
  • the path length of the first conductor portion 31 is longer than the path length of the second conductor portion 32.
  • the resistance value R1 of the first conductor portion 31 is higher than the resistance value R2 of the second conductor portion 32.
  • the path resistance of the entire path is determined according to the resistance of each switch section 41, 42 and the resistance values R1 and R2 of each conductor section 31, 32, and the path resistance of each conductor section 31, 32 is determined between the paths.
  • the resistance values R1 and R2 become non-uniform
  • the path resistance of the entire path also becomes non-uniform. Therefore, when the switch SW1 is turned on, that is, when the MOSFETs 43 of the switch units 41 and 42 of the parallel paths are turned on, the currents flowing in the paths become uneven.
  • the first voltage V1 applied to the gate terminal 43a of each MOSFET 43 of the first switch section 41 connected to the first conductor section 31 is connected to the second conductor section 32 in the second switch section 42.
  • the configuration is higher than the second voltage V2 applied to the gate terminal 43a of each MOSFET 43.
  • FIG. 3 is a diagram showing a first voltage V1 and a second voltage V2 applied to the gate terminal 43a by the first drive circuit 50 and the second drive circuit 60.
  • the voltage generated by the first generation circuit 52 in which the calibration circuit is not provided deviates from the target voltage Tg1 based on the tolerance of the operating frequency f1. May have.
  • the first voltage V1 has a value within the range indicated by the arrow in the figure with respect to the target voltage Tg1 due to individual differences in the components used in the periodic circuit 54.
  • the first generation circuit 52 which is not provided with the calibration circuit and has the target voltage Tg1 set higher than the target voltage Tg2 of the second generation circuit 62, is mounted on the first conductor portion 31 side having a high resistance value R1. It is desirable to use it for the first switch unit 41.
  • the operating frequency f2 can be changed within the allowable error range.
  • the operating frequency f2 can be changed by the calibration circuit 65 even after the components are mounted. Therefore, the second voltage V2 is adjusted so that the difference between the first voltage V1 and the second voltage V2 corresponds to the difference between the resistance values R1 and R2. That is, the second voltage V2 is adjusted according to the individual variations of the resistance values R1 and R2 of the conductor portions 31 and 32 after mounting, the variations of the first voltage V1, and the like.
  • the second voltage is adjusted according to the individual variations of the resistance values R1 and R2 of the conductor portions 31 and 32, the variations of the first voltage V1, and the like. Adjust V2.
  • the path lengths of the first conductor portion 31 and the second conductor portion 32 are different and the resistance values R1 and R2 are different, it is possible to prevent the path resistance of the entire path from becoming uneven, and the path can be set. The unevenness of the flowing current can be suppressed.
  • the second generation circuit 62 includes a calibration circuit 65, and the first generation circuit 52 does not have a calibration circuit. Even if the first generation circuit 52 is not provided with a calibration circuit, the second voltage V2 can be adjusted by adjusting the voltage generated by the second generation circuit 62 based on the voltage generated by the first generation circuit 52. The voltage can be adjusted so that is lower than the first voltage V1. Therefore, it is possible to secure the voltage difference between the first voltage V1 and the second voltage V2 according to the respective resistance values R1 and R2 while suppressing the increase in cost.
  • the MOSFET 43 of each of the switch units 41 and 42 that controls the current flowing through the conductor units 31 and 32 has a lower resistance when the current flows through the MOSFET 43 as the voltage applied to the gate terminal 43a increases. Therefore, in the present embodiment, the first voltage V1 applied to the gate terminal 43a of the MOSFET 43 of the first switch unit 41 connected to the first conductor portion 31 having a high resistance value R1 is connected to the second conductor portion 32. The configuration is higher than the second voltage V2 applied to the gate terminal 43a of the MOSFET 43 of the second switch unit 42.
  • the resistance in the first switch section 41 can be made smaller than the resistance in the second switch section 42.
  • the resistance values R1 and R2 of the conductor portions 31 and 32 are different due to the difference in the path length or the like, it is possible to suppress the path resistance of the entire path from becoming uneven, and the conductors are arranged in parallel. The unevenness of the current flowing in the path can be suppressed. Therefore, it is not necessary to set a large current margin according to the path having a large current, so that the allowable current of the entire path can be increased.
  • each of the generation circuits 52 and 62 that generate the voltage applied to the gate terminal 43a are different between the first switch unit 41 and the second switch unit 42, each of the generation circuits 52 and 62 individually generates a voltage.
  • the voltage applied to the gate terminal 43a can be different.
  • the voltage application to the first switch unit 41 is not possible due to the failure of the first generation circuit 52.
  • the voltage application in the second switch unit 42 can be continued. As a result, it is possible to stabilize the power supply.
  • the calibration circuit 65 is configured to adjust the second voltage V2. As a result, a voltage is generated so that the first voltage V1 is higher than the second voltage V2 and applied to the gate terminal 43a, so that unevenness of the current flowing in the path can be suppressed.
  • the booster circuit 63 which is a charge pump circuit
  • boosting is performed at the operating frequency f2 in a predetermined boosting period to generate a voltage.
  • the generated voltage can be adjusted by changing the number of boosts within the boost period by the calibration circuit 65. Therefore, the voltage generated by the booster circuit 63 can be changed by changing the number of boosts according to the individual deviations of the components and the like after mounting the components and the like.
  • the calibration circuit 65 the number of boosts in the boost period is changed within the allowable error range of the operating frequency f2.
  • the booster circuit 63 has a deviation of the generated voltage due to the allowable error range of the operating frequency f2 (clock signal generated by the periodic circuit 64), and in order to eliminate this deviation, the calibration circuit 65 keeps the deviation within the allowable error range.
  • the operating frequency f2 is changed.
  • the calibration circuit 65 makes it possible to intentionally lower the generated voltage by changing the number of boosts in the boost period. As a result, unevenness of the current flowing in the path can be further suppressed by adjusting the second voltage V2 after mounting the component or the like.
  • the second voltage V2 can be obtained by adjusting the voltage within the voltage adjustment range by the second generation circuit 62 in which the calibration circuit 65 is provided.
  • the voltage can be adjusted to be lower than the first voltage V1.
  • the desired voltage adjustment can be suitably performed.
  • it is preferable to provide a calibration circuit on the second generation circuit 62 side because it is easier to stabilize by lowering the voltage by the calibration circuit 65.
  • the voltage generated in each of the generation circuits 52 and 62 can be suitably adjusted while suppressing the increase in cost, and the unevenness of the current flowing in the path can be suppressed.
  • a calibration circuit 65 may be provided in the first generation circuit 52 and the second generation circuit 62, respectively.
  • the first generation circuit 52 raises the operating frequency f1 within the permissible error range
  • the second generation circuit 62 raises the permissible error.
  • the voltage adjustment range can be expanded while limiting the voltage adjustment range within the allowable error range of the operating frequencies f1 and f2.
  • the calibration circuit 65 may be provided in the first generation circuit 52, and the calibration circuit may not be provided in the second generation circuit 62. Also in this case, it is desirable that the operating frequency f1 is adjusted by the calibration circuit 65 so that the second voltage V2 is lower than the first voltage V1 based on the second voltage V2.
  • the voltage generated by each of the generation circuits 52 and 62 can be changed, and feedback control is performed based on the current flowing through the first conductor portion 31 and the second conductor portion 32. May be good.
  • Each of the detection units 45 detects the current flowing through the first conductor unit 31 and the second conductor unit 32, and the control unit 21 flows through the first conductor unit 31 and the second conductor unit 32, respectively, based on the detected current.
  • the voltage generated by each of the generation circuits 52 and 62 is feedback-controlled so that the currents are the same.
  • control the voltage applied by the respective generation circuits 52 and 62 so that the difference between the voltages applied to the gate terminal 43a based on the detected current becomes a predetermined value.
  • the control unit 21 corresponds to the “voltage control unit”.
  • the voltage generated by at least one of the first generation circuit 52 and the second generation circuit 62 may be controlled.
  • the resistance values R1 and R2 of the first conductor portion 31 and the second conductor portion 32 are different due to the difference in the path length, but due to the difference in the material and the difference in the cross-sectional area of each conductor portion, etc. This configuration can be applied even when the resistance values R1 and R2 of the conductor portions 31 and 32 are different.
  • -A pair of MOSFETs 43 and paths may be provided in parallel in each of the switch units 41 and 42.
  • two or more first conductor portions 31 may be arranged in parallel, and a pair of MOSFETs 43 may be provided for each.
  • the switch SW2 may also be the target of this configuration when the resistance value of the conductor portion between the branch points N21 and N22 is different. Further, the switches SW3 and SW4 may also be the target of this configuration when the MOSFETs are connected in parallel with each other and the resistances of the parallel conductors are different. In that case, the "electrical device" includes an electrical load 15.
  • the MOSFET 43 is used as the "semiconductor switching element" used for the switch SW1, but another semiconductor switching element such as an IGBT may be used. Further, although two MOSFETs 43 are used for each of the switch units 41 and 42, one MOSFET may be used. In that case, it is desirable to provide a diode in the opposite direction to the parasitic diode for preventing dark current.
  • the booster circuits 53 and 63 and the periodic circuits 54 and 64 are provided in the respective switch units 41 and 42, respectively, but the booster circuit and the periodic circuit may be combined into one.
  • a resistor or the like is provided on the path and the resistance value is adjusted so that the first voltage V1 becomes higher than the second voltage V2. Is desirable to generate.
  • the voltage applied to the gate terminal 43a may be generated by a circuit other than the charge pump circuit, such as a chopper circuit, as the booster circuit.
  • a voltage dividing circuit may be provided between the generation circuit and the gate terminal 43a, and the applied voltage value may be changed to adjust the voltage applied to the gate terminal 43a.
  • a charge pump circuit is used as the booster circuit, a voltage dividing circuit is provided between the generation circuit and the gate terminal 43a, and the applied voltage value is changed to change the voltage applied to the gate terminal 43a. You may adjust.
  • variable resistors may be provided in the first conductor portion 31 and the second conductor portion 32, and the resistance values thereof may be adjusted.
  • the dual power supply device includes two storage batteries, but it may be equipped with only one of the storage batteries.
  • the lithium ion storage battery 12 is used in the above embodiment, another high-density storage battery may be used.
  • a nickel-metal hydride battery may be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Dc-Dc Converters (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne une unité source d'alimentation (U) pourvue d'une première partie de conducteur (31) et d'une deuxième partie de conducteur (32) disposées en parallèle sur un chemin électrique (L1) raccordant électriquement une batterie d'accumulateurs de plomb (11) et une machine électrique rotative (14), un commutateur (SW1) pourvu d'une première partie commutation (41) et d'une deuxième partie commutation (41) comprenant des éléments de commutation semi-conducteurs et raccordées en parallèle au moyen de la première partie de conducteur (31) et de la deuxième partie de conducteur (32), et des circuits de génération (52, 62) destinés à générer des tensions à appliquer sur des bornes de grille (43a) de la première partie commutation (41) et de la deuxième partie commutation (42), une valeur de résistance (R1) de la première partie de conducteur (31) étant supérieure à une valeur de résistance (R2) de la deuxième partie de conducteur (32), et une première tension (V1) appliquée sur la borne de grille (43a) de la première partie commutation (41) étant supérieure à une deuxième tension (V2) appliquée sur la borne de grille (43a) de la deuxième partie commutation (42).
PCT/JP2020/013008 2019-04-05 2020-03-24 Dispositif source de puissance WO2020203465A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112020001745.1T DE112020001745T5 (de) 2019-04-05 2020-03-24 Stromversorgungsvorrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-072928 2019-04-05
JP2019072928A JP7010266B2 (ja) 2019-04-05 2019-04-05 電源装置

Publications (1)

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WO2020203465A1 true WO2020203465A1 (fr) 2020-10-08

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Country Link
JP (1) JP7010266B2 (fr)
DE (1) DE112020001745T5 (fr)
WO (1) WO2020203465A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016203792A (ja) * 2015-04-22 2016-12-08 株式会社デンソー 電源装置
JP2018007478A (ja) * 2016-07-06 2018-01-11 株式会社デンソー 電源制御装置、及び電源システム

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6696401B2 (ja) 2016-10-21 2020-05-20 株式会社デンソー 電源装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016203792A (ja) * 2015-04-22 2016-12-08 株式会社デンソー 電源装置
JP2018007478A (ja) * 2016-07-06 2018-01-11 株式会社デンソー 電源制御装置、及び電源システム

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JP7010266B2 (ja) 2022-01-26
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