WO2016063866A1 - 電源制御装置および情報処理装置 - Google Patents
電源制御装置および情報処理装置 Download PDFInfo
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- WO2016063866A1 WO2016063866A1 PCT/JP2015/079549 JP2015079549W WO2016063866A1 WO 2016063866 A1 WO2016063866 A1 WO 2016063866A1 JP 2015079549 W JP2015079549 W JP 2015079549W WO 2016063866 A1 WO2016063866 A1 WO 2016063866A1
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- power supply
- battery
- voltage value
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- capacitor
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
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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
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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
- 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
- Embodiments described herein relate generally to a power supply control device and an information processing device.
- Information processing devices used in the industrial system field such as communication equipment, broadcasting equipment, and factory equipment are required to have high reliability. For this reason, by providing an auxiliary power supply device inside or outside the information processing device, even if a power failure or power supply trouble occurs during system operation, by backing up the power supply to the information processing device for a certain period of time, The system is continuously operated to prevent failures such as program and data destruction.
- Rechargeable secondary batteries are generally used for batteries used in auxiliary power supplies. Secondary batteries include lead storage batteries, nickel cadmium batteries, nickel metal hydride batteries, lithium ion batteries, and the like, and these secondary batteries have a problem that their lifetimes become shorter as the number of charge / discharge cycles increases.
- the problem to be solved by the present invention is to provide a power supply control device and an information processing device that can extend the battery life.
- a power supply control apparatus is a power supply control apparatus that receives power supply from an external power supply and supplies power to a system control unit of the information processing apparatus, and the power supply from the external power supply A capacitor that receives and stores electricity, a battery that is charged by receiving power from the external power supply, and an external power supply monitor that determines whether or not the voltage value of the external power supply is equal to or lower than a predetermined first reference voltage value And the external power supply monitoring unit determine that the power supply to the system control unit is changed from the power supply by the external power supply to the capacitor when the voltage value of the external power supply is determined to be equal to or lower than a predetermined first reference voltage value.
- the capacitor monitoring unit determines that the charge amount of the capacitor is equal to or less than a predetermined reference charge amount
- the power supply to the system control unit is changed from the power supply by the capacitor to the power supply by the battery.
- a power supply unit that supplies output power from the second switching unit to the system control unit.
- the information processing apparatus is an information processing apparatus including a system control unit and a power control device that receives power from an external power source and supplies power to the system control unit.
- a capacitor that is charged by receiving power from the external power source, a battery that is charged by receiving power from the external power source, and whether the voltage value of the external power source is equal to or lower than a predetermined first reference voltage value
- An external power supply monitoring unit for determining whether or not the external power supply monitoring unit determines that the voltage value of the external power supply is equal to or lower than a predetermined first reference voltage value.
- a first switching unit that switches from power supply by an external power supply to power supply by a capacitor, and a condenser that determines whether or not the charge amount of the capacitor is equal to or less than a predetermined reference charge amount
- the power supply to the system control unit is A second switching unit that switches from power supply to power supply by a battery; and a power supply unit that supplies output power from the second switching unit to the system control unit.
- FIG. 1 is a configuration diagram of an information processing apparatus including a power supply control apparatus according to the first embodiment.
- FIG. 2 is a flowchart of power backup by the power control apparatus according to the first embodiment.
- FIG. 3 is a configuration diagram of an information processing apparatus including the power supply control apparatus according to the second embodiment.
- FIG. 4 is a flowchart of power backup by the power control apparatus according to the second embodiment.
- FIG. 5 is a configuration diagram of an information processing apparatus including a power supply control device according to the third embodiment.
- FIG. 1 is a configuration diagram of an information processing apparatus including a power supply control device according to a first embodiment.
- the information processing apparatus 1 includes a power supply control device 19 and a system control unit 20.
- the power supply control device 19 is a power supply control device that converts an external AC power supply (commercial power supply, AC) into a DC power supply and supplies the DC power to the system control unit 20.
- the power supply control device 19 includes a power supply unit 2, an EDLC (Electric Double Layer Capacitor) 7, an EDLC switching circuit 11 (first switching unit), an EDLC monitoring circuit 13, and a battery (secondary battery) 8.
- the battery switching circuit 12 (second switching unit) is provided.
- the system control unit 20 is a processing unit that performs system control by a CPU or LSI.
- the system control unit 20 includes a CPU board 3, a hard disk drive 4, an optical drive 5, and a cooling fan 6.
- the power supply unit 2 includes an AC / DC conversion circuit 9 and an AC power supply monitoring circuit 10.
- the AC / DC conversion circuit 9 is a circuit that rectifies AC power, which is commercial power input from the outside, and converts it into DC power.
- the output of the AC / DC conversion circuit 9 is connected to an EDLC switching circuit 11 described later.
- the AC power supply monitoring circuit 10 (external power supply monitoring unit) determines whether or not the AC power supply voltage of the AC power supply has dropped below a preset AC power supply determination reference voltage value (first reference voltage value). This is a circuit for monitoring whether or not the AC power supply has a voltage drop. When a voltage drop of the AC power supply is detected, the AC power supply monitoring circuit 10 outputs an AC power supply voltage drop detection signal as a detection signal to the EDLC switching circuit 11 described later.
- the EDLC switching circuit 11 is a circuit for switching whether the DC power supplied to the system control unit 20 is the DC power from the AC / DC conversion circuit 9 or the DC power by the EDLC 7, and the EDLC 7 and a battery switching circuit described later. 12.
- the AC power supply monitoring circuit 10 When the voltage drop of the AC power supply has not occurred, the AC power supply monitoring circuit 10 does not detect the voltage drop of the AC power supply, so the EDLC switching circuit 11 does not receive the AC power supply voltage drop detection signal from the AC power supply monitoring circuit 10.
- the EDLC switching circuit 11 supplies DC power to the system control unit 20 via the battery switching circuit 12 by DC power from the AC / DC conversion circuit 9 and also stores power in the EDLC 7. Thereby, EDLC7 has a function as an electrical storage circuit.
- the AC power supply monitoring circuit 10 detects the voltage drop of the AC power supply, so the EDLC switching circuit 11 receives the AC power supply voltage drop detection signal from the AC power supply monitoring circuit 10. At this time, the EDLC switching circuit 11 switches the DC power supply to the system control unit 20 via the battery switching circuit 12 to the DC power supply from the EDLC 7 instead of the DC power supply from the AC / DC conversion circuit 9.
- the EDLC monitoring circuit 13 (capacitor monitoring unit) is a circuit that monitors the remaining amount of charge stored in the EDLC 7.
- the EDLC monitoring circuit 13 supplies DC power from the EDLC 7 to the system control unit 20, when the remaining charge of the EDLC 7 falls below a predetermined reference charge amount (predetermined reference charge amount), An EDLC charge amount decrease detection signal indicating a decrease in the charge amount of the EDLC 7 is output to the battery switching circuit 12.
- the battery switching circuit 12 supplies DC power to the system control unit 20 as DC power from the AC / DC conversion circuit 9, DC power from the EDLC 7, or DC power supply from the battery 8. And is connected to the battery 8 and various circuits of the system control unit 20.
- the battery switching circuit 12 When the battery switching circuit 12 receives DC power from the AC / DC conversion circuit 9, the battery switching circuit 12 supplies DC power to the system control unit 20 and charges the battery 8.
- the battery switching circuit 12 when the voltage drop of the AC power supply occurs, the DC power supply is supplied from the EDLC 7 and the EDLC charge amount drop detection signal is received from the EDLC monitoring circuit 13, the battery switching circuit 12 causes the DC power supply to the system control unit 20.
- the supply is switched from the EDLC 7 to the battery 8 and switched to power backup by the battery 8. That is, the battery switching circuit 12 also functions as a power supply unit that supplies output power (DC power) to the system control unit 20.
- the CPU board 3 of the system control unit 20 includes an internal control circuit 15, an expansion card 16, a DC power supply step-down circuit 17, a real time clock circuit (hereinafter referred to as RTC) / memory 18 (RTC and memory, RTC. Memory), and the like. . These circuits are supplied with DC power from the battery switching circuit 12.
- the internal control circuit 15 is a circuit that controls the system by a CPU or LSI.
- the expansion card 16 is a card with a built-in printed circuit board for expanding the function of the system control unit 20.
- the DC power supply step-down circuit 17 is a circuit for supplying DC power to an RTC / memory 18 to be described later, and drops the voltage to the operating voltage of the RTC / memory 18.
- the RTC / memory 18 is driven by a DC power source (not shown) such as a primary battery while DC power is not supplied to the system control unit 20 and the system of the information processing apparatus is stopped. A memory element holding data.
- the RTC / memory 18 is supplied with a DC power source whose power source is stepped down by the DC power source step-down circuit 17.
- a hard disk drive 4 an optical drive 5, and a cooling fan 6 are connected to the CPU board 3, and DC power is supplied from the battery switching circuit 12.
- the EDLC detachable connector 21a is a connector to which the EDLC 7 is attached, and the EDLC 7 can be detached from the power supply control device 19 (EDLC switching circuit 11 (first switching unit)).
- the battery detachable connector 21b is a connector for attaching the battery 8, and allows the battery 8 to be detached from the power supply control device 19 (battery switching circuit 12 (second switching unit)).
- the system control unit 20 since the system control unit 20 is supplied with DC power from the battery switching circuit 12, the system control unit 20 becomes a load part for the power supply control device 19.
- the EDLC 7 and the battery 8 can adjust the capacity of the DC power output from the EDLC 7 and the battery 8 according to the configuration (load) of the system control unit 20.
- the capacity of the DC power output from the EDLC 7 and the battery 8 can be increased by increasing or replacing the EDLC 7 and the battery 8 with one having a large capacity. It can be changed.
- a unit in which the EDLC 7 and the battery 8 are integrated may be configured so that the EDLC switching circuit 11 and the battery switching circuit 12 can be attached to and detached from the unit.
- FIG. 2 is a flowchart of power backup of the power control apparatus according to the first embodiment. The operation of this embodiment will be described with reference to a flowchart.
- the power supply control device converts AC power supplied from the outside into DC power.
- the power supply unit 2 starts supplying the DC power converted by the AC / DC conversion circuit 9 to the system control unit 20 via the EDLC switching circuit 11 and the battery switching circuit 12 (step S1).
- the system control unit 20 that has been supplied with the DC power supply starts an operating system (hereinafter referred to as OS) (step S2).
- OS operating system
- the AC power supply voltage is normal, and the DC power converted by the AC / DC conversion circuit 9 is supplied to the system control unit 20 and to the EDLC 7 via the EDLC switching circuit 11,
- the battery 8 is charged and supplied to the battery 8 via the battery switching circuit 12 to charge the battery 8 (step S3).
- the AC power supply monitoring circuit 10 monitors the state of the AC power supply, and determines whether or not the AC power supply voltage of the AC power supply has dropped below a preset AC power supply determination reference voltage value (first reference voltage value) (AC power supply). It is determined whether or not the voltage has dropped (step S4).
- first reference voltage value AC power supply determination reference voltage value
- the AC power supply Does not output the voltage drop detection signal. As a result, the supply of DC power from the AC / DC conversion circuit 9 to the EDLC 7, the battery 8, and the system control unit 20 is continued.
- the AC power supply monitoring circuit 10 determines that the AC power supply voltage has dropped below the AC power supply determination reference voltage value (AC power supply voltage drop) (YES in step S4), the AC power supply voltage drop is applied to the EDLC switching circuit 11. A detection signal is output.
- the EDLC switching circuit 11 When receiving the AC power supply voltage drop detection signal from the AC power supply monitoring circuit 10, the EDLC switching circuit 11 replaces the supply of DC power from the AC / DC conversion circuit 9 with the DC power supply of the EDLC 7 of the storage circuit from the system control unit 20. Power supply backup by the EDLC 7 is performed (step S5).
- the EDLC monitoring circuit 13 monitors the charge capacity (remaining amount) of the EDLC 7 of the power storage circuit during power backup, and determines whether or not the capacity has fallen to a predetermined reference reference charge capacity or less (step S6). ).
- the AC power supply monitoring circuit 10 determines that the capacity of the EDLC 7 exceeds the determination reference charge capacity (NO in step S6), and the AC power supply monitoring circuit 10 continues to determine that the AC power supply voltage has decreased. If yes (YES in step S7), the power backup from the EDLC 7 is continued. On the other hand, when the AC power supply monitoring circuit 10 detects a return of the AC power supply voltage, that is, the AC power supply monitoring circuit 10 has a value that the AC power supply voltage exceeds the AC power supply determination reference voltage value (first reference voltage value). When it is determined that the power has returned (NO in step S7), the AC power supply monitoring circuit 10 stops outputting the AC power supply voltage drop detection signal to the EDLC switching circuit 11.
- the EDLC switching circuit 11 supplies the DC power to the system control unit 20 from the EDLC 7 of the power storage circuit to the AC / DC of the power supply unit 2.
- the conversion circuit 9 is switched to return.
- step S6 when the EDLC monitoring circuit 13 determines that the capacity of the EDLC 7 has fallen below the determination reference charge capacity (EDLC capacity reduction) (YES in step S6), the EDLC monitoring circuit 13 detects the battery switching circuit 12. An EDLC charge amount decrease detection signal is output as a signal.
- the battery switching circuit 12 that has received the EDLC charge amount detection signal switches to supply DC power from the battery 8 instead of the EDLC 7, that is, switches to backup by the battery 8 (step S8).
- DC power is supplied to the controller 20 (step S9). That is, steps S3 to S9 are a flow showing normal operation of the system.
- the voltage drop of the AC power supply includes a power failure of less than 1 second (hereinafter referred to as an instantaneous power failure) and a power failure of 1 second or more in addition to the voltage drop.
- an instantaneous power failure a power failure of less than 1 second
- a power failure of 1 second or more in addition to the voltage drop.
- the system controller 20 when the system controller 20 can be backed up only by power supply from the EDLC 7 such as a momentary power failure, the power can be backed up without supplying power from the battery 8.
- instantaneous interruptions occur more frequently than power outages of 1 second or more, so that there are many opportunities for power supply using only the EDLC 7. From this, compared with the power supply of only the battery 8, the number of times of charging / discharging of the battery is reduced, so that the battery 8 has an effect of extending the life.
- FIG. 3 shows the configuration of the second embodiment.
- a battery monitoring circuit 14 battery monitoring unit
- the battery monitoring circuit 14 monitors the voltage of the battery 8 when supplying DC power from the battery 8, and the voltage of the battery 8 is equal to or lower than a preset battery determination reference voltage value (second reference voltage value).
- a battery voltage drop detection signal indicating a voltage drop of the battery 8 is output to the internal control circuit 15 of the CPU board 3. That is, the battery monitoring circuit 14 also functions as a notification unit.
- the internal control circuit 15 is supplied with DC power from the battery 8 via the battery switching circuit 12 and controls the hard disk drive 4 and the optical drive 5.
- the internal control circuit 15 receives the AC power supply voltage drop detection signal from the AC power supply monitor circuit 10 in the power supply unit 2 and receives the battery voltage drop detection signal from the battery monitor circuit 14, the internal control circuit 15 shuts down the OS, After the shutdown is completed, a DC power supply output control signal is output to the AC / DC conversion circuit 9 and the battery switching circuit 12 in the power supply unit 2 so as to stop the output of the DC power supply.
- at least the OS shutdown process is included in the OS control process.
- the RTC / memory 18 receives DC power from the battery switching circuit 12 and receives DC power that is stepped down by the DC power step-down circuit 17.
- the EDLC 7 and the battery 8 can be detached from the power supply control device of the present embodiment, and the EDLC 7 and the battery 8 can be removed depending on the configuration (load) of the system control unit 20.
- the capacity of the DC power output from the battery 8 may be adjusted.
- the EDLC 7 and the battery 8 can be independently detached, and the capacity of the DC power output from the EDLC 7 and the battery 8 can be adjusted.
- a unit in which the EDLC 7 and the battery 8 are integrated may be configured so as to be detachable in units.
- FIG. 4 is a flowchart of power backup of the power control device of the second embodiment. The operation of this embodiment will be described with reference to a flowchart.
- the flowchart of this embodiment is the same as that of the first embodiment from step S1 to step S9 until the power is supplied to the system control unit 20 by backup switching from the battery 8 of the first embodiment. Is omitted.
- step S9 When the battery switching circuit 12 switches to backup by the battery 8 (step S8) and the DC power of the battery 8 is supplied to the system control unit 20 (step S9), the battery monitoring circuit 14 is in power backup. The voltage of the DC power supply of the battery 8 is monitored, and it is determined whether or not the voltage of the DC power supply of the battery 8 has dropped below the battery determination reference voltage value (second reference voltage value) (step S10).
- the battery monitoring circuit 14 determines that the voltage of the battery 8 is higher than the battery determination reference voltage value (second reference voltage value) (NO in step S10), and the AC power supply monitoring circuit 10 determines that the AC power supply voltage is a voltage. When it is continuously determined that the voltage has decreased, that is, the AC power supply monitoring circuit 10 continues to determine that the AC power supply voltage is equal to or lower than the AC power supply determination reference voltage value (first reference voltage value). If yes (YES in step S11), the power backup for supplying DC power from the battery 8 is continued.
- the AC power supply monitoring circuit 10 detects a return of the AC power supply voltage, that is, the AC power supply monitoring circuit 10 is a value at which the AC power supply voltage exceeds the AC power supply determination reference voltage value (first reference voltage value).
- the AC power supply monitoring circuit 10 stops outputting the AC power supply voltage drop detection signal to the EDLC switching circuit 11 and the battery switching circuit 12.
- the battery switching circuit 12 changes the DC power supply to the system control unit 20 from the DC power supply from the battery 8 to the power supply unit 2. Switching is made so that the DC power supply from the AC / DC conversion circuit 9 is restored.
- step S10 when the battery monitoring circuit 14 determines that the voltage of the battery 8 is lower than the battery determination reference voltage value (second reference voltage value) (battery capacity reduction) (YES in step S10).
- the battery monitoring circuit 14 outputs a battery voltage drop detection signal to the internal control circuit 15 in the CPU board 3.
- the internal control circuit 15 that has received the battery voltage drop detection signal forcibly starts the OS shutdown process (step S12) and completes the OS shutdown process (step S13).
- step S13 After completing the OS shutdown process (step S13), the AC power supply monitoring circuit 10 in the power supply unit 2 determines whether or not the voltage drop of the AC power supply continues (step S14).
- the AC power supply monitoring circuit 10 determines that the AC power supply voltage is the AC power supply determination reference voltage value (first reference voltage value). This is a case where it is determined that the following is true (YES in step S14). In this case, the AC power supply monitoring circuit 10 outputs an AC power supply voltage drop detection signal to the internal control circuit 15.
- the internal control circuit 15 that has received the AC power supply voltage drop detection signal from the AC power supply monitoring circuit 10 sets 1 to the address of the circuit connected to the CPU board 3, and then the DC power supply to the battery switching circuit 12 is stopped. Output control signal is output. Thereby, the supply of DC power to the system controller 20 by the battery 8 is stopped (step S16).
- the AC power supply monitoring circuit 10 determines that the AC power supply has returned, that is, the AC power supply monitoring circuit 10 returns to a value where the AC power supply voltage exceeds the AC power supply determination reference voltage value (first reference voltage value). If it is determined that the AC power supply voltage is restored (NO in step S14), the AC power supply monitoring circuit 10 stops outputting the AC power supply voltage drop detection signal to the internal control circuit 15. When the output of the AC power supply voltage drop detection signal from the AC power supply monitoring circuit 10 is stopped, the internal control circuit 15 inputs 0 to the address of the circuit connected to the CPU board 3 and resets it (step S15).
- step S1 the power supply unit 2 starts supplying the DC power to the system control unit 20 via the EDLC switching circuit 11 and the battery switching circuit 12 (step S1).
- the internal control circuit 15 restarts the supply of DC power from the power supply unit 2 and restarts the OS (step S2). That is, steps S12 to S16 are a flow showing the system stop process.
- the internal control circuit 15 determines that the voltage below the first reference voltage value and the voltage below the second reference voltage value are in the system.
- a DC power supply output control signal for stopping power supply is output to the AC / DC conversion circuit 9 and the battery switching circuit 12 so as not to be applied to the control unit 20, and the supply of DC power to the system control unit 20 is temporarily stopped. May be.
- the internal control circuit 15 stops outputting the DC power supply output control signal, restarts the supply of DC power from the power supply unit 2 (step S1), and can restart the OS (step S2).
- the OS shutdown process is started (step S12).
- a power saving state such as a mode or a hibernation state may be entered, the AC power supply may be waited for recovery, and if it does not recover, a shutdown process may be performed.
- These OS control processes include at least an OS shutdown process.
- the present embodiment has an effect of monitoring the voltage of the external power supply after the OS shutdown and automatically restarting the DC power output from the power supply unit 2 when it is determined that the power is restored. is there.
- the present embodiment has an effect of avoiding a situation in which the power failure continues for a long time, a voltage drop due to insufficient power supply capacity of the battery 8 occurs, and the OS is not normally terminated. In addition, it is possible to avoid a reduction in the service life due to the battery 8 being completely discharged.
- the system control unit 20 when the system control unit 20 can be backed up only by power supply from the EDLC 7 such as an instantaneous power failure, the power supply from the battery 8 is not supplied. You can make a backup. Therefore, the number of times of charging / discharging of the battery is reduced as compared with the power supply of only the battery 8, so that there is an effect of extending the life of the battery.
- FIG. 5 shows the configuration of the third embodiment.
- the present embodiment further includes a DC power supply switching circuit 22 (DC power supply switching unit) that directly supplies power to the RTC / memory 18 from the battery 8.
- the DC power supply switching circuit 22 is for supplying DC power directly from the battery 8 to the RTC / memory 18 when a voltage drop below the first reference voltage value is detected in the AC power supply. Therefore, the same components as those of the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.
- the DC power supplied to the RTC / memory 18 is supplied via the battery switching circuit 12.
- the AC power supply monitoring circuit 10 determines that the voltage drop of the AC power supply is lower than the AC power supply determination reference voltage value (first reference voltage value)
- the AC power supply voltage drop detection signal is output from the AC power supply monitoring circuit 10. Is output to the DC power supply switching circuit 22.
- the DC power supply switching circuit 22 receives the AC power supply voltage drop detection signal from the AC power supply monitoring circuit 10
- the DC power supply switching circuit 22 directly connects the DC power supply of the battery 8 to the DC power supply step-down circuit without passing through the battery switching circuit 12. Switch to supply to 17.
- the DC power source switching circuit 22 sends the DC power source to the RTC / memory 18 via the battery switching circuit 12. Switch to receive the supply.
- the DC power source When the voltage of the AC power source continues to drop, the voltage of the battery 8 falls below the battery determination reference voltage value (second reference voltage value), and the internal control circuit 15 completes the OS shutdown process, the DC power source The switching circuit 22 performs switching so as to supply the DC power of the battery 8 directly to the DC power supply step-down circuit 17 from the battery 8. Since the RTC / memory 18 consumes less power than the internal control circuit 15 and the expansion card 16, the voltage of the battery 8 is set to the battery determination reference voltage value (second reference voltage value) while the information processing apparatus 1 is stopped. Even if the voltage is lower than the above, the data can be sufficiently retained even with the voltage due to the remaining capacity of the battery 8.
- the power supply to the RTC / memory 18 is the power supply from the AC power supply, and the power supply from the battery switching circuit 12 is switched again.
- the EDLC 7 and the battery 8 can be detached from the power supply control device of the present embodiment, depending on the configuration (load) of the system control unit 20.
- the capacity of the DC power output from the EDLC 7 or the battery 8 may be adjusted.
- the EDLC 7 and the battery 8 can be independently detached, and the capacity of the DC power output from the EDLC 7 and the battery 8 can be adjusted.
- a unit in which the EDLC 7 and the battery 8 are integrated may be configured so as to be detachable in units.
- the power supply control device exists in the same housing as the system control unit 20, but as a separate housing as an uninterruptible power supply connected from the outside. Also good.
- the EDLC has been described.
- the capacitor is not limited to the EDLC as long as it is a capacitor.
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Abstract
Description
図1は第1の実施形態である電源制御装置を備えた情報処理装置の構成図である。
図3は第2の実施形態の構成を示したものである。本実施形態は第1の実施形態の電源制御装置にバッテリ監視回路14(バッテリ監視部)を付加した構成である。したがって、第1の実施形態と同様の構成には同様の符号を付し、その説明は省略する。バッテリ監視回路14は、バッテリ8からのDC電源を供給しているとき、バッテリ8の電圧を監視し、バッテリ8の電圧が予め設定したバッテリ判定基準電圧値(第2の基準電圧値)以下に低下した場合、CPU基板3の内部制御回路15にバッテリ8の電圧低下を示すバッテリ電圧低下検出信号を出力する。すなわち、バッテリ監視回路14は、通知部としても機能する。
図5は第3の実施形態の構成を示したものである。本実施形態は第2の実施形態にさらに、RTC/メモリ18への電源供給をバッテリ8から直接供給する、DC電源切替回路22(DC電源切替部)を備えている。DC電源切替回路22は、AC電源に第1の基準電圧値を下回る、電圧低下が検出された場合に、バッテリ8からRTC/メモリ18へ直接DC電源を供給するためのものである。したがって、第2の実施形態と同様の構成には同様の符号を付し、その説明は省略する。
Claims (10)
- 外部電源から電源供給を受けて、情報処理装置のシステム制御部へ電源を供給する電源制御装置であって、
前記外部電源から電源供給を受けて蓄電されるコンデンサと、
前記外部電源から電源供給を受けて充電されるバッテリと、
前記外部電源の電圧値が所定の第1の基準電圧値以下になったか否かを判定する外部電源監視部と、
前記外部電源監視部により前記外部電源の電圧値が所定の第1の基準電圧値以下と判定されたときに、前記システム制御部に対する電源供給を、前記外部電源による電源供給から前記コンデンサによる電源供給に切り替える第1の切替部と、
前記コンデンサからの電源供給時において、前記コンデンサの電荷量が所定の基準電荷量以下になったか否かを判定するコンデンサ監視部と、
前記コンデンサ監視部が前記コンデンサの電荷量が前記所定の基準電荷量以下になったと判定したときに、前記システム制御部に対する電源供給を、前記コンデンサによる電源供給から前記バッテリによる電源供給に切り替える第2の切替部と、
前記第2の切替部による出力電源を前記システム制御部に供給する電源供給部と、を備えた電源制御装置。 - 前記コンデンサは、前記第1の切替部と脱着可能である請求項1に記載の電源制御装置。
- 前記バッテリは、前記第2の切替部と脱着可能である請求項1又は請求項2に記載の電源制御装置。
- 前記第1の切替部に接続される前記コンデンサと、前記第2の切替部に接続される前記バッテリとが一体となったユニットを構成し、前記ユニットが前記第1の切替部および第2の切替部と脱着可能である、請求項1に記載の電源制御装置。
- 前記バッテリからの電源供給時において、前記バッテリの電圧値が所定の第2の基準電圧値以下になったか否かを判定するバッテリ監視部と前記バッテリ監視部が前記バッテリの電圧値が所定の第2の基準電圧値以下になったと判定したとき、判定結果をシステム制御部に出力する通知部と、をさらに備えた、請求項1乃至請求項4のいずれか1項に記載の電源制御装置。
- システム制御部と、外部電源から電源供給を受けて前記システム制御部へ電源を供給する電源制御装置とを備える情報処理装置であって、
前記電源制御装置は、前記外部電源から電源供給を受けて蓄電されるコンデンサと、前記外部電源から電源供給を受けて充電されるバッテリと、
前記外部電源の電圧値が所定の第1の基準電圧値以下になったか否かを判定する外部電源監視部と、
前記外部電源監視部により前記外部電源の電圧値が所定の第1の基準電圧値以下と判定されたときに、前記システム制御部に対する電源供給を、前記外部電源による電源供給からコンデンサによる電源供給に切り替える第1の切替部と、
前記コンデンサからの電源供給時において、前記コンデンサの電荷量が所定の基準電荷量以下になったか否かを判定するコンデンサ監視部と、
前記コンデンサ監視部がコンデンサの電荷量が所定の基準電荷量以下になったと判定したときに、前記システム制御部に対する電源供給を、前記コンデンサによる電源供給からバッテリによる電源供給に切り替える第2の切替部と、前記第2の切替部による出力電源を前記システム制御部に供給する電源供給部と、を備えている情報処理装置。 - 前記電源制御装置は、前記バッテリからの電源供給時において、前記バッテリの電圧値が所定の第2の基準電圧値以下になったか否かを判定するバッテリ監視部と、
前記バッテリ監視部が前記バッテリの電圧値が所定の第2の基準電圧値以下になったと判定したとき、判定結果をシステム制御部に出力する通知部と、
をさらに備えた、請求項6に記載の情報処理装置。 - 前記システム制御部は、
前記電源制御装置から、前記バッテリの電圧値が所定の第2の基準電圧値以下になったと通知されたときに、オペレーティングシステムの制御処理をするシステム制御部を備えた請求項7に記載の情報処理装置。 - 前記システム制御部は、前記オペレーティングシステムの制御処理を完了した後、前記外部電源監視部により前記外部電源の電圧値が所定の第1の基準電圧値を上回ったと判定されたときに、前記オペレーティングシステムの起動を行う請求項8に記載の情報処理装置。
- 請求項7乃至請求項9のいずれか1項に記載の情報処理装置において、
前記システム制御部は、前記外部電源の電圧値が所定の第1の基準電圧値以下になったときの当該情報処理装置のデータを保持する記憶素子を備え、
前記電源制御装置は、前記外部電源監視部により前記外部電源の電圧値が前記第1の基準電圧値以下になったと判定されたとき、前記バッテリによる電源供給を前記記憶素子に直接供給するDC電源切替部を更に備える情報処理装置。
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JP7018095B2 (ja) * | 2020-07-07 | 2022-02-09 | 華邦電子股▲ふん▼有限公司 | 電源制御回路 |
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US11652358B2 (en) | 2018-12-17 | 2023-05-16 | Abb Schweiz Ag | UPS device for electric power distribution installations |
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