WO2017141654A1 - Dispositif d'alimentation électrique - Google Patents

Dispositif d'alimentation électrique Download PDF

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Publication number
WO2017141654A1
WO2017141654A1 PCT/JP2017/002634 JP2017002634W WO2017141654A1 WO 2017141654 A1 WO2017141654 A1 WO 2017141654A1 JP 2017002634 W JP2017002634 W JP 2017002634W WO 2017141654 A1 WO2017141654 A1 WO 2017141654A1
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WO
WIPO (PCT)
Prior art keywords
power
power supply
external device
circuit
external
Prior art date
Application number
PCT/JP2017/002634
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English (en)
Japanese (ja)
Inventor
一磨 大橋
畠山　武士
Original Assignee
パナソニックＩｐマネジメント株式会社
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Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2017141654A1 publication Critical patent/WO2017141654A1/fr

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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
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • 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

  • This disclosure relates to a power supply device that selectively supplies power according to the priority of a device during a power failure.
  • Patent Document 1 discloses a power supply system that supplies power to each device connected by a backup power source in the event of a power failure.
  • This power supply system can determine the priority of each device in advance. Thereby, it is possible to selectively supply power to the device during a power failure.
  • This disclosure provides a power supply device that realizes more reliable power supply to high-priority external devices.
  • the power supply device includes a conversion circuit that converts power from an external power source, and a power storage unit that can temporarily store power and discharge the stored power.
  • the power supply device includes a power supply circuit, a power supply circuit, a communication circuit, and a controller.
  • the power supply circuit outputs predetermined power from the conversion circuit. When the power supply from the conversion circuit is insufficient with respect to the predetermined power, the power supply circuit supplements the shortage with the power from the power storage unit and outputs it as the predetermined power.
  • the power supply circuit supplies power from the power supply circuit to the connected external device.
  • the communication circuit acquires external device information related to the power supply of the external device.
  • the controller acquires external device information from the external device via the communication circuit.
  • the controller determines the priority corresponding to each external device based on the acquired external device information.
  • the controller controls power supply from the power supply circuit to each of the power supply circuits in accordance with the priority in a state where power supply from the external power supply is stopped.
  • the power supply device can realize more reliable power supply to high-priority external devices.
  • FIG. 1 is a block diagram illustrating a configuration of a power supply device according to the first embodiment.
  • FIG. 2 is a flowchart showing power control processing according to the first embodiment.
  • FIG. 1 is a block diagram illustrating a configuration of the power supply apparatus 100.
  • the power supply apparatus 100 includes a power conversion circuit 101, a capacitor 102, a power supply circuit 110, a power failure detection circuit 103, a communication circuit 120, and a controller 104.
  • the power supply device 100 is connected to an external power source 130.
  • the power supply device 100 can be connected to an external device 140.
  • External power supply 130 is connected to power conversion circuit 101 and power failure detection circuit 103.
  • the external power supply 130 supplies power to the power conversion circuit 101.
  • the power failure detection circuit 103 detects a decrease in power input from the external power supply 130 and transmits a power failure detection signal to the controller 104.
  • the external device 140 is an electronic device such as a mobile PC, a smartphone, or a portable music player.
  • the external device 140 is detachable from the power supply device 100.
  • the external device 140 can be supplied with power from the power supply device 100 by being connected to the power supply device 100.
  • the power conversion circuit 101 is a power conversion circuit that converts the power input from the external power supply 130 into a desired voltage and outputs the voltage.
  • the power conversion circuit 101 supplies a predetermined voltage to the capacitor 102 and the power supply circuit 110.
  • the power conversion circuit 101 and the capacitor 102 constitute a power supply circuit 105.
  • the power supply circuit 105 supplies predetermined power to the power supply circuit 110.
  • the power supply circuit 105 compensates for the insufficient power by supplying power from the capacitor 102. That is, when the power conversion circuit 101 supplies predetermined power, the power that cannot be supplied from the power supply circuit 105 is supplied from the capacitor 102, whereby the predetermined power can be supplied as a whole.
  • the capacitor 102 stores the electric power converted by the power conversion circuit 101.
  • the capacitor 102 compensates for temporarily insufficient power when the power supply to the power conversion circuit 101 is unstable (such as during a power failure). As a result, the capacitor 102 stabilizes the power supplied from the power conversion circuit 101 to the external device 140 via the power supply circuit 110.
  • the capacitor 102 is an example of a power storage unit.
  • the power supply circuit 110 is connected between the power supply circuit 105 and the external device 140.
  • the power supply device 100 can be connected to a maximum of three external devices 140 to supply power.
  • the power supply device 100 includes three power supply circuits 110 for supplying power to each of the external devices 140.
  • Each of the power supply circuits 110 supplies power to the connected external device 140.
  • the power supply apparatus 100 supplies power required by the external device 140.
  • the controller 104 transmits a stop command to the power supply circuit 110 to which the low-priority external device 140 is connected, and stops the power supply from the power supply circuit 110.
  • the communication circuit 120 is connected to the external device 140.
  • the power supply apparatus 100 includes three communication circuits 120 for communicating with each of the external devices 140.
  • Each of the communication circuits 120 acquires external device information from the connected external device 140.
  • the external device information includes drive information indicating whether or not the external device 140 can be driven by a battery, battery remaining information indicating the battery remaining amount of the external device 140, and power information indicating power consumption of the external device 140.
  • the communication circuit 120 transmits each acquired information to the controller 104.
  • the controller 104 is connected to the power failure detection circuit 103, the power supply circuit 110, and the communication circuit 120.
  • the controller 104 acquires external device information regarding the corresponding external device 140 from each communication circuit 120.
  • the controller 104 determines the priority for each external device 140 based on the acquired external device information.
  • the controller 104 compares the amount of power that can be supplied from the capacitor 102 with the power information indicating the power consumption of each external device 140. When the power conversion circuit 101 cannot supply sufficient power, the controller 104 preferentially supplies power from the capacitor 102 to the external device 140 with high priority.
  • the controller 104 transmits information indicating whether to supply power to each external device 140 to the power supply circuit 110 corresponding to each external device 140, and controls power supply.
  • FIG. 2 is a flowchart showing the power control process of the power supply apparatus 100.
  • the controller 104 When the power supply apparatus 100 is activated, the controller 104 first acquires external device information from each connected external device 140 via the communication circuit 120 (S01). Next, the controller 104 determines the priority of each external device 140 based on the external device information acquired by the communication circuit 120 (S02).
  • the controller 104 refers to the drive information included in the external device information.
  • the controller 104 sets the priority of the corresponding external device 140 to be lower than that of the external device 140 that is not battery-driven.
  • the controller 104 sets the priority of the corresponding external device 140 higher than that of the external device 140 that can be driven by a battery.
  • the controller 104 can determine the priority according to the remaining battery information included in the external device information. More specifically, the controller 104 refers to each battery remaining amount information of the external device 140, and sets a higher priority for the external device 140 with a small remaining battery amount.
  • the controller 104 determines whether or not the necessary power is not supplied from the external power source 130 (hereinafter, this state is referred to as a power failure state) (S03).
  • a power failure state When trouble such as a failure occurs in the external power supply 130 and a power failure occurs, the voltage of the power input from the external power supply 130 decreases.
  • the power failure detection circuit 103 monitors the voltage input to the power conversion circuit 101 and compares it with a preset threshold value. When the voltage input to the power conversion circuit 101 is less than the threshold value, the power failure detection circuit 103 detects this as a power failure state. When the power failure state is detected, the power failure detection circuit 103 transmits a power failure detection signal indicating the power failure state to the controller 104.
  • the power failure detection circuit 103 does not output a power failure detection signal.
  • the controller 104 determines that it is not in a power failure state, and externally supplies power to all the power supply circuits 110 to which the external device 140 is connected. Power is supplied to the device 140 (S07). Thereafter, the controller 104 returns to step S01 and repeats the process.
  • the controller 104 determines that it is in a power failure state, and first stores power stored in the capacitor 102 and can be supplied to the external device 140 (hereinafter referred to as supplyable power). Is called (S04). Specifically, the controller 104 detects the voltage across the capacitor 102 and estimates the amount of power stored in the capacitor 102 based on this voltage. Furthermore, the controller 104 calculates suppliable power based on the amount of power stored in the capacitor 102. The voltage across the capacitor 102 may be measured by the power conversion circuit 101 and notified to the controller 104.
  • the controller 104 performs control so that the power supplied from the capacitor 102 does not exceed the power that can be supplied.
  • the controller 104 compares the total power consumption of the connected external device 140 with the suppliable power (S05). Specifically, the controller 104 extracts information indicating the power consumption of each external device 140 from the power information included in the external device information received from the connected external device 140, and totals these. Then, the controller 104 compares the total power consumption with the power that can be supplied from the capacitor 102.
  • the controller 104 can supply the necessary power to all the external devices 140 when the suppliable power is greater than or equal to the total power consumption of the external device 140 (“Yes” in step S05), that is, the suppliable power of the capacitor 102. If so, the process proceeds to step S07. In step S07, the controller 104 causes all the power supply circuits 110 connected to the external device 140 to supply power to the external device 140. Thereafter, the controller 104 returns to step S01 and repeats the process.
  • the controller 104 when the suppliable power is smaller than the total power consumption of the external device 140 (“No” in step S05), that is, when the suppliable power of the capacitor 102 is insufficient, the controller 104 has a relative priority.
  • the power supply circuit 110 is controlled so as to supply power only to the external device 140 that is relatively high (S06). That is, the controller 104 causes the power supply circuit 110 to which the external device 140 having a relatively high priority is connected to supply power to the external device 140.
  • the controller 104 causes the power supply circuit 110 to which the external device 140 having a relatively low priority is connected to stop power supply to the external device 140.
  • the controller 104 adds the power consumption in order from the external device 140 with the highest priority within a range that does not exceed the suppliable power of the capacitor 102.
  • the external device 140 that is the target of addition until the added power consumption exceeds the suppliable power is identified as the external device 140 that can supply power.
  • the external device 140 that is not the target of addition until the added power consumption exceeds the suppliable power is identified as the external device 140 that stops the power supply.
  • the controller 104 transmits a stop signal to the power supply circuit 110 to which the external device 140 that stops power supply is connected.
  • the power supply circuit 110 that has received the stop signal stops power supply to the connected external device 140 having a low priority. Thereafter, the controller 104 returns to step S01 and repeats the process.
  • a new external device 140 may be connected or the connected external device 140 may be removed.
  • the controller 104 grasps this change by acquiring external device information in step S01.
  • the controller 104 can continuously obtain the external device information of each connected external device 140, thereby updating the priority for the external device 140 to the latest state in step S02.
  • the controller 104 can be switched to supply power only to the external device 140 having a high priority based on the power that can be supplied at that time. Thereafter, when the power that can be supplied further decreases, the power supply is continued while narrowing down the external device 140 that supplies power. This makes it possible to achieve both the stability of power supply to the external device 140 with a low priority and the stability of power supply to the external device 140 with a high priority.
  • the power supply device 100 includes the power conversion circuit 101 and the capacitor 102 as the power supply circuit 105.
  • the power conversion circuit 101 converts power from the external power supply 130.
  • Capacitor 102 can temporarily store the power from power conversion circuit 101 and can discharge the stored power.
  • the power supply device 100 includes a power supply circuit 105, a power supply circuit 110, a communication circuit 120, and a controller 104.
  • the power supply circuit 105 outputs predetermined power from the power conversion circuit 101. When the power output from the power conversion circuit 101 is insufficient with respect to the predetermined power, the power supply circuit 105 outputs the predetermined power as a whole by making up for the insufficient power by outputting from the capacitor 102. .
  • the power supply circuit 110 is supplied with power from the power supply circuit 105 and supplies power to the connected external device 140.
  • the communication circuit 120 acquires external device information regarding the power supply of the external device 140.
  • the controller 104 acquires external device information from the external device 140 via the communication circuit 120.
  • the controller 104 determines the priority corresponding to each of the external devices 140 based on the acquired external device information.
  • the controller 104 controls the power supply from the power supply circuit 105 to each of the power supply circuits 110 in accordance with the priority of the corresponding external device 140 in a stopped state where the power supply from the external power supply 130 is stopped.
  • the power supply apparatus 100 can realize reliable power supply to the external device 140 having a high priority even in a power failure state. That is, the power supply apparatus 100 according to the present embodiment can realize reliable power supply to the external device 140 having a high priority.
  • the first embodiment has been described as an example of the technique disclosed in the present application.
  • the technology in the present disclosure is not limited to this, and can also be applied to embodiments in which changes, replacements, additions, omissions, and the like are performed.
  • the capacitor 102 is described as an example of the power storage unit.
  • the power storage unit only needs to be able to temporarily store power.
  • a secondary battery may be used as the power storage unit.
  • Embodiment 1 the description has been given assuming that there are three external devices 140 that can be connected. That is, the power supply device 100 of the first embodiment has been described as including three sets of the power supply circuit 110 and the communication circuit 120, but these may not be three sets, and may be two or more.
  • the external device 140 has been described as being detachable from the power supply apparatus 100.
  • the external device may include an external device (first device) that is always connected to the power supply apparatus 100 and a removable external device (second device).
  • the controller 104 may determine the priority of the first device higher than the priority of the second device.
  • a display may be provided as the first device.
  • preset values may be given to the power consumption and priority of the first device.
  • the communication circuit 120 corresponding to the power supply circuit 110 that supplies power to the first device can be omitted.
  • the same number of communication circuits 120 corresponding to each of the power supply circuit 110 and the external device 140 are provided. However, if there are connection terminals to each of the external devices 140, the communication circuit is One may be sufficient. That is, one communication circuit may be connected to and communicate with a plurality of external devices 140.
  • the communication circuit 120 acquires information indicating the power consumption of the external device 140 by communicating with the external device 140, but is not limited thereto.
  • the power consumption of the external device 140 may be estimated by measuring the power supplied from the power supply circuit 110 to the external device 140.
  • the communication circuit 120 may further include a power detection circuit, and the power detection circuit may detect a current flowing from the power supply circuit 110 to the external device 140. Thereby, the power consumption of the external device 140 can be estimated based on the power actually consumed, not the power required by the external device 140. Thereby, the controller 104 can determine more appropriately in step S05.
  • Embodiment 1 when the total power consumption of the external device 140 exceeds the power that can be supplied, the power supply from some of the power supply circuits 110 is stopped. However, when the total power consumption of the external device 140 exceeds the suppliable power, the external device 140 may be controlled to reduce the power consumption of the external device 140 before stopping the power supply. For example, the power that can be supplied may be notified to the external device 140. As a result, the frequency at which the power supply to the external device 140 is completely stopped can be suppressed.
  • the present disclosure can be applied to a power supply device that needs to reliably supply power to an external device with high priority.
  • the present disclosure is applicable to power supplies for personal computers, trains, ships, aircraft, and the like.

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

L'invention porte sur un dispositif d'alimentation électrique (100) qui est pourvu d'un circuit source d'alimentation (105), de circuits d'alimentation électrique (110), de circuits de communication (120) et d'une unité de commande (104). Le circuit source d'alimentation (105) délivre une énergie électrique prédéterminée par un circuit de conversion d'énergie électrique (101) et un condensateur (102) permettant d'accumuler temporairement de l'énergie. Les circuits d'alimentation électrique (110) fournissent, à des appareils externes (140) qui leur sont respectivement connectés, l'énergie électrique fournie par le circuit source d'alimentation (105). Les circuits de communication (120) acquièrent des informations d'appareil externe. L'unité de commande (104) détermine une priorité correspondant aux appareils externes (140) sur la base des informations d'appareil externe. L'unité de commande (104) commande la fourniture d'énergie du circuit source d'alimentation (105) aux circuits d'alimentation électrique (110) en fonction de la priorité.
PCT/JP2017/002634 2016-02-17 2017-01-26 Dispositif d'alimentation électrique WO2017141654A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-027502 2016-02-17
JP2016027502 2016-02-17

Publications (1)

Publication Number Publication Date
WO2017141654A1 true WO2017141654A1 (fr) 2017-08-24

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PCT/JP2017/002634 WO2017141654A1 (fr) 2016-02-17 2017-01-26 Dispositif d'alimentation électrique

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110032261A (zh) * 2018-01-12 2019-07-19 克洛纳测量技术有限公司 具有经确保的和未确保的功能装置的电设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010259201A (ja) * 2009-04-23 2010-11-11 Panasonic Electric Works Co Ltd 電力供給システム
JP2011010471A (ja) * 2009-06-26 2011-01-13 Tamura Seisakusho Co Ltd 停電時における電力制御システム
JP2011205871A (ja) * 2010-03-26 2011-10-13 Panasonic Electric Works Co Ltd 電力供給システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010259201A (ja) * 2009-04-23 2010-11-11 Panasonic Electric Works Co Ltd 電力供給システム
JP2011010471A (ja) * 2009-06-26 2011-01-13 Tamura Seisakusho Co Ltd 停電時における電力制御システム
JP2011205871A (ja) * 2010-03-26 2011-10-13 Panasonic Electric Works Co Ltd 電力供給システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110032261A (zh) * 2018-01-12 2019-07-19 克洛纳测量技术有限公司 具有经确保的和未确保的功能装置的电设备

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