JP2006136152A - Electronic equipment having backup power supply unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide electronic equipment having a backup power supply unit which conducts secondary battery drive in a power saving-mode control circuit in the electronic equipment using simple operation at a power failure to display an available residual time, rapidly charges the secondary battery after the recovery from the power failure and displays the time until the completion of charging. <P>SOLUTION: The electronic equipment having a backup power supply unit is constituted of a means of displaying residual time capable of being operated by a residual capacity excluding the battery capacity for end processing during a power failure and a residual time capable of conducting end processing even if the power failure occurs after a restart; a means of issuing a warning according to the residual time value; a means of displaying the extendable residual time when the action state of each circuit block is stopped; a means for a user to stop the circuit blocks that require no action for prolonging the residual time; a means of rapidly charging the backup secondary battery after the recovery from the power failure; and a means for displaying a time until the completion of charging. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electronic apparatus having a backup power supply device.

  Conventionally, in an electronic device having a backup power supply, when power is not supplied due to a power failure, etc., it operates with power supplied from the backup power supply and displays the remaining capacity ratio and remaining usable time of the backup secondary battery in operation. However, there are electronic devices that shut off the power supply when the remaining capacity is low.

For example, see Patent Document 1.
Japanese Patent Laid-Open No. 08-063404

  However, in the above conventional example, the remaining capacity of the secondary battery for backup can be used effectively to the extent that the guideline can be grasped even if there is a time display that can be operated by the backup power supply when power is not supplied due to a power failure or the like. It is difficult to know whether it is possible to safely terminate the electronic device when power is not supplied again due to a power failure or the like when the power failure is restored and the electronic device is operating.

  The present invention performs an operation by a backup power source in a power saving mode by controlling the operation of each circuit block in an electronic device automatically or by a simple operation when power is not supplied due to a power failure or the like. Backup power supply device that displays the remaining time that can be used, limits the functions that can be used after power failure recovery, quickly charges the secondary battery for backup, and displays the time until the battery can be terminated An object of the present invention is to provide an electronic device having

  In order to achieve the above object, the first invention according to the present application, when a power failure occurs, the remaining capacity excluding the battery capacity necessary for the system to be safely terminated from the total remaining capacity of the backup secondary battery, Calculated from the discharge current value of the secondary battery, the remaining time that can be operated by the backup power supply, and after the electronic device performs the termination process and shuts off the power supply, after the power failure returns and restarts, the power failure occurs again immediately However, either the remaining capacity excluding the battery capacity necessary for the system to exit safely and / or the remaining time that can be operated by the backup power source calculated from the discharge current value of the secondary battery, or either Is displayed on the display device, and a warning is issued when the remaining capacity is low.

  A second invention according to the present application includes means for lowering a display frame rate of the display device in order to lengthen a remaining operable time during the backup power supply operation in the first invention.

  According to a third aspect of the present application, in the first or second aspect, during operation of the backup power source, each operation circuit block name of the electronic device, an operation state of each circuit block, and an operation of each circuit block Means for displaying on the display device a list of remaining time that can be extended when the operation is stopped, and means for stopping the operation of the circuit block that requires no operation by the user in order to lengthen the remaining operable time.

  A fourth invention according to the present application is the first invention, the second invention, or the third invention, the quick charging means for charging the backup secondary battery in a short time after power failure recovery, and during charging And means for displaying the time until the completion of charging on the display device, and means for limiting to safe work even if a power failure occurs again until the charging is completed.

  As described above, according to the present invention, when power is not supplied due to a power failure or the like, the operation of each circuit block in the electronic device is controlled automatically or by a simple operation in the power saving mode. In addition to the operation with the backup power supply, the remaining usable time is displayed, and after the power failure is restored, the usable functions are limited and the secondary battery for backup is quickly charged, and until it reaches a chargeable state that can be terminated. It is possible to provide an electronic apparatus having a backup power supply device that displays the time.

(First embodiment)
FIG. 1 is a diagram for explaining a first embodiment. In FIG. 1, reference numeral 1 denotes an electronic device a having a backup power supply device, to which a display device 3, a warning device 4, and a backup power supply device 5 are connected. The circuit 2 is configured. The backup power supply 5 includes a power supply circuit 5-2 to which the AC plug 6 and the power failure detection circuit 5-1 are connected, a charging circuit a5-3, and a secondary battery 5-5 to which the current detection circuit 5-4 is connected. And a control circuit 5-6.

  FIG. 2 is an example of a display screen used for explaining the operation of FIG. 1. A usable remaining time a display 8 and a usable remaining time b display 9 are displayed on the display screen 7.

  Next, in the electronic apparatus having the above-described backup power supply device, in the normal operation state, the main circuit 2 to which the display device 3 and the warning device 4 are connected is powered by the backup power supply device 5 that receives power supply from the AC plug 6. Supplied and working. In the backup power supply device 5, the power supply circuit 5-2 that receives power supply from the AC plug 6 converts the input AC primary power source into a necessary DC secondary power source and, if necessary, an AC secondary power source. The power is supplied to the circuit 2 and the secondary battery 5-5 is charged through the charging circuit a5-3. When power is not supplied to the AC plug 6 due to a power failure or the like, the backup power supply 5 detects a power failure by the power failure detection circuit 5-1, and performs a backup power operation by the secondary battery 5-5. In the backup power supply operation, the discharge current from the secondary battery 5-5 is supplied to the power supply circuit 5-2 after the current value is measured by the current detection circuit 5-4, and converted into a necessary power supply in the main circuit 2. It is supplied to the main circuit 2. The control circuit 5-6 manages the secondary battery total capacity of the secondary battery 5-5, the secondary battery terminal voltage information, and the secondary battery discharge current value detected by the current detection circuit 5-4. Data is transferred to the main circuit 2. The main circuit 2 calculates the difference between the total capacity of the secondary battery and the power capacity required for the termination of the electronic device a having the backup power supply device, and further detects the secondary detected by the current detection circuit 5-4. From the battery discharge current value and the secondary battery terminal voltage information, the remaining usable time a until the electronic device a having the backup power supply device performs the termination process is calculated. Further, the main circuit 2 calculates the difference between the total capacity of the secondary battery and the power supply capacity required for the termination of the electronic device a having the backup power supply device, and further detects it by the current detection circuit 5-4. From the secondary battery discharge current value and the secondary battery terminal voltage information, the remaining usable time b until the electronic device a having the backup power supply device performs the termination process is calculated. The calculated usable remaining time a and usable remaining time b are displayed on the display device 3. The usable remaining time a is displayed on the usable remaining time a display 8 on the display screen 7 shown in FIG. 2, and the usable remaining time b is displayed on the usable remaining time b display. When the remaining usable time “a” and the remaining usable time “b” are preset times, the warning device 4 issues a warning to the user.

  The remaining usable time a and the remaining usable time b may be displayed either or both.

  Even if the work is completed with almost no usable remaining time b remaining, the power failure is restored because the electronic device a having the backup power supply device can perform the termination process with two power supply capacities necessary for the termination process. When the power is turned on again, the end process can be safely performed even if power is not supplied again due to a power failure or the like without waiting for the completion of the next charging.

  As described above, since the remaining usable time is displayed, it is possible to provide an electronic apparatus having a backup power supply device that can be used up to the end of the time when it can be effectively operated.

(Second embodiment)
FIG. 3 is a diagram for explaining a second embodiment. In FIG. 3, reference numeral 10 denotes an electronic apparatus b having a backup power supply device, to which a display device 3, a warning device 4, and a backup power supply device 5 are connected. The main circuit 11 is used. The main circuit 11 includes a frame rate conversion circuit 12 that converts the frame rate of an image displayed on the display device. The backup power supply 5 includes a power supply circuit 5-2 to which the AC plug 6 and the power failure detection circuit 5-1 are connected, a charging circuit a5-3, and a secondary battery 5-5 to which the current detection circuit 5-4 is connected. And a control circuit 5-6.

  The basic operation is the same as that of the first embodiment, and power is not supplied to the AC plug 6 due to a power failure, the power failure is detected by the power failure detection circuit 5-1, and the backup power supply by the secondary battery 5-5. In operation, the display device 3 is driven at a lower frame rate by the frame rate conversion circuit 12 in order to reduce the power consumption and increase the usable time.

  The display device 3 may not be built in the electronic device b having the backup power supply device but may be a separate form.

  As described above, it is possible to provide an electronic apparatus having a backup power supply device that can reduce power consumption by reducing the frame rate displayed on the display device and can extend the usable time. .

(Third embodiment)
FIG. 4 is a diagram for explaining a third embodiment. In FIG. 4, reference numeral 13 denotes an electronic device c having a backup power supply device, which includes a USB circuit 14, a hard disk drive A15, a hard disk drive B16, a board A17, The main circuit 2 is connected to the board B18, the display device 3, the warning device 4, and the backup power supply device 5. The backup power supply 5 includes a power supply circuit 5-2 to which the AC plug 6 and the power failure detection circuit 5-1 are connected, a charging circuit a5-3, and a secondary battery 5-5 to which the current detection circuit 5-4 is connected. And a control circuit 5-6.

  FIG. 5 is an example of a display screen used for explaining the operation of FIG. 4. A circuit block name display 20, a use state display 21, an operation extension possible time display 22, and an operation / non-operation state check display 23 are displayed on the display screen 19. A usable remaining time display 24 is displayed.

  The basic operation is the same as that of the first embodiment, and power is not supplied to the AC plug 6 due to a power failure, the power failure is detected by the power failure detection circuit 5-1, and the backup power supply by the secondary battery 5-5. When in operation, a USB circuit is used as information for reducing the power consumption and extending the usable time by shutting off the power supply in the standby state of the unused circuit block in the electronic device c having the backup power supply device. 14, the hard disk drive A 15, the hard disk drive B 16, the board A 17, and the board B 18, the use state, the operation extension possible time, and the operation / non-operation state check are displayed. The circuit block name display 20 in the display screen 19 of FIG. 5 can display the circuit block name to be controlled in the power supply state, and the use state display 21 can extend the actual operation state of the target circuit block. The time display 22 indicates the usage time that can be extended when the target circuit block is in a standby state or power-off state, and the operation / non-operation state check display 23 indicates that the target circuit block is in a standby state, or Displays whether to set the power shutdown state.

  In a normal operation state in which power is stably supplied from the AC plug 6, a display screen 19 is displayed, and the operation / non-operation state check display 23 of the target circuit block is checked, so that a power failure, etc. When the power is not supplied and the backup power supply operation is started due to the cause, it is possible to automatically set the power saving state set in the operation / non-operation state check display 23.

  As described above, even if the user does not know the circuit block configuration that constitutes the electronic device, the current consumption of each block, the operation state, etc., the unused circuit block and its circuit block are deactivated. In this case, it is possible to provide an electronic device having a backup power supply device that can be recognized at a glance and can be efficiently operated by performing simple settings.

(Fourth embodiment)
FIG. 6 is a diagram for explaining a fourth embodiment. In FIG. 6, reference numeral 1 denotes an electronic device d having a backup power supply device, to which a display device 3, a warning device 4, and a backup power supply device 5 are connected. The main circuit 2 is used. The backup power supply 5 includes a power supply circuit 5-2 to which the AC plug 6 and the power failure detection circuit 5-1 are connected, a charging circuit a5-7, and a secondary battery 5-5 to which the current detection circuit 5-4 is connected. And a control circuit 5-6.

  FIG. 7 is an example of a display screen used for explaining the operation of FIG. 6, and a charging completion time 27 is displayed on the display screen 26.

  Next, in the electronic device having the above-described backup power supply device, the power is not supplied due to a power failure or the like, and it continues to be used by the backup power supply operation. When the possible remaining time a becomes zero and the power is turned off after the forcible termination process is performed, the state where the power supply is stopped due to a power failure or the like is restored and the power is turned on. The rechargeable battery 5-5 quickly charges the rechargeable battery 5-5 because the rechargeable battery capacity sufficient to perform the termination process cannot be secured when the power supply is stopped again due to a power failure or the like. When charging is completed until the battery capacity is sufficient for the termination process, charging is performed at a normal charging rate. In addition, during the charging time until the battery capacity is sufficient to complete the termination process, the time until the charging is completed is displayed on the display device 3.

  During the charging period until the battery capacity is sufficient for the termination process, the functions that can be used are limited to prevent problems.

  For example, during the charging period until the battery capacity is sufficient for the termination process, operations that can be performed to prevent accidents such as data loss even if power is not supplied due to a power failure or the termination process cannot be completed completely. The function is limited to reading the file, and the operation such as overwriting the file automatically deletes the old file after the new file is completely recorded.

  Even electronic devices that use the quick charging method as the normal charging method, charge the battery at a higher current for a shorter time than the normal quick charging until the battery capacity is sufficient for the termination process. Furthermore, normal charging can be performed in a short time by performing charging by normal quick charging.

  As explained above, even if a power failure occurs again after a power failure recovery, it is possible to display the time until the termination process can be performed normally in a short time until the termination process can be performed normally. An electronic device having a backup power supply device can be provided.

1 is a diagram illustrating an electronic apparatus having a backup power supply device according to a first embodiment of the present invention. It is an example of a display screen explaining the 1st example of the present invention. It is drawing explaining the electronic device which has the backup power supply device based on 2nd Example of this invention. It is drawing explaining the electronic device which has the backup power supply device based on the 3rd Example of this invention. It is an example of a display screen explaining the 3rd example of the present invention. It is drawing explaining the electronic device which has the backup power supply device based on the 4th Example of this invention. It is an example of a display screen explaining the 4th example of the present invention.

Explanation of symbols

1 Electronic equipment having a backup power supply device a
2 Main circuit 3 Display device 4 Warning device 5 Backup power supply device 5-1 Power failure detection circuit 5-2 Power supply circuit 5-3 Charging circuit a
5-4 Current detection circuit 5-5 Secondary battery 5-6 Control circuit 5-7 Charging circuit b
6 AC plug 7 Display screen 8 Usable remaining time a display 9 Usable remaining time b display 10 Electronic device b having backup power supply
11 Main Circuit 12 Frame Rate Conversion Circuit 13 Electronic Device c Having Backup Power Supply Device c
14 USB circuit 15 Hard disk drive A
16 Hard disk drive B
17 Board A
18 Board B
DESCRIPTION OF SYMBOLS 19 Display screen 20 Circuit block name display 21 Usage status display 22 Operation extension possible time display 23 Operation / non-operation status check display 24 Usable remaining time display 25 Electronic device d having backup power supply device d
26 Display screen 27 Charging completion time display

Claims (4)

In the event of a power failure, it can operate with a backup power source calculated from the remaining capacity of the backup secondary battery minus the battery capacity required for the system to be safely terminated and the discharge current value of the secondary battery. Remaining time,
After the electronic device performs termination processing and shuts off the power supply, after the power failure is restored and restarted, the remaining capacity excluding the battery capacity necessary for the system to be safely terminated even if a power failure occurs again, Means for displaying on the display device either or both of the remaining time operable by the backup power source calculated from the discharge current value of the secondary battery;
An electronic device having a backup power supply device, characterized by comprising means for issuing a warning when the remaining capacity is low.   2. The electronic apparatus having a backup power supply device according to claim 1, further comprising means for lowering a display frame rate of the display device in order to lengthen a remaining operable time during the backup power supply operation.   At the time of backup power supply operation, each operation circuit block name of the electronic device, the operation state of each circuit block, means for displaying a list of remaining time that can be extended when the operation of each circuit block is stopped on the display device, 3. The electronic apparatus having a backup power supply device according to claim 1, further comprising means for stopping operation of a circuit block that requires no operation by a user in order to lengthen the remaining operable time.   Quick recovery means to charge the backup secondary battery in a short time after power failure recovery, means to display the time until completion of charging on the display device during charging, and even if power failure occurs again until charging is completed 4. An electronic apparatus having the backup power supply device according to claim 1, wherein the electronic device comprises means for limiting to safe work.

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