CN201160226Y - Selective back-up power supply apparatus - Google Patents
Selective back-up power supply apparatus Download PDFInfo
- Publication number
- CN201160226Y CN201160226Y CNU2008200012121U CN200820001212U CN201160226Y CN 201160226 Y CN201160226 Y CN 201160226Y CN U2008200012121 U CNU2008200012121 U CN U2008200012121U CN 200820001212 U CN200820001212 U CN 200820001212U CN 201160226 Y CN201160226 Y CN 201160226Y
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- CN
- China
- Prior art keywords
- voltage
- power supply
- feeding mechanism
- output unit
- memory cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model relates to a selective backup power supply device, which is applicable for pocket PC and supplies electric power to a real-time clock and a storage unit for use. The selective backup power supply device comprises a backup battery, a first power supply output unit and a second power supply output unit, wherein the backup battery outputs the backup voltage. The first power supply output unit is connected at the backup battery and the real-time clock to receive the backup voltage and output the first supply voltage to the real-time clock. The second power supply output unit is connected at the backup battery and the storage unit to receive the backup voltage and output the second supply voltage to the storage unit or stop outputting the second supply voltage according to the selected signal. The selective backup power supply device is used to provide the selection between standard mode and high-grade mode power supply managements in the case that pocket PC is energized at low-voltage power supply.
Description
Technical field
The utility model relates to a kind of selecting type back-up source feeding mechanism, particularly a kind of being useful in the palmtop computer (Pocket PC), and, can be according to the selection of powering mode, with the power supply device that provides suitable electric power to use to load.
Background technology
General palmtop computer (Pocket PC) is under the situation of low power supply supply (Low Battery), its power management adopts mode standard (Standard Mode) or high-quality pattern (Premium Mode) usually, palmtop computer is carried out the management of power supply.Under mode standard (Standard Mode), when the main battery of (Pocket PC) exhausts or removes, the status data that palmtop computer produced is stored in the memory automatically, and backup battery can provide electric power to memory and real-time clock (Real Time Clock; RTC) at least 30 minutes, to reach the maintenance of data and time.In addition, under high-quality pattern (Premium Mode), backup battery only provided electric power to real-time clock (RTC), with about 168 hours of states such as date of keeping palmtop computer, time.
Please refer to Fig. 1, be the block schematic diagram of the power supply device of traditional palmtop computer.Power supply device 1 includes main battery 14, charhing unit 19, backup battery 18, reaches power supply output unit 16.Under palmtop computer normal power supply situation, main battery 14 provides voltage to use to real-time clock in the palmtop computer 2 and memory cell 3, simultaneously, also charges by 19 pairs of backup batteries 18 of charhing unit.Aforementioned memory cell 3 is generally Synchronous Dynamic Random Access Memory (SDRAM).
With reference to figure 1, the structure of power supply device 1 only can be used under the management means of mode standard (StandardMode) again, and wherein, when main battery 14 exhausts or removes, palmtop computer will change by backup battery 18 power supplies.At this moment, backup battery 18 is sent reserve voltage and is given power supply output unit 16, produced supply voltage by to be allowed power supply output unit 16 and uses for real-time clock 2 and memory cell 3.And, the document data that palmtop computer produced can be stored in the memory cell 3 automatically, then the electric power that provided of power backup pond 18 will keep the integrality of aforementioned document data, and aforementioned document data has comprised editor's data, the program in using and other set point etc.Simultaneously, real-time clock 2 also will keep the state such as date, time of palmtop computer.
Yet backup battery 18 needs power supply simultaneously to use for real-time clock 2 and memory cell 3, and therefore, its electric power only can be kept about 30 minutes to 90 minutes, and after power drain, the document data that leaves in the memory cell 3 promptly can disappear.
In sum, traditional power supply device 1 structure only can provide the palmtop computer electricity consumption that is in low power supply power supply with the management means of mode standard (Standard Mode).So this kind structure is subject to mode standard (Standard Mode), and long electric power can't be provided, to keep the operation of memory cell 3 and real-time clock 2.The power management means of flexible choice criteria pattern of user (Standard Mode) or high-quality pattern (Premium Mode) also can't be provided simultaneously.
The utility model content
In view of this, the utility model provides a kind of selecting type back-up source feeding mechanism, it is used in the palmtop computer (Pocket PC), and be in the situation of low power supply supply (LowBattery) in palmtop computer, the selection of mode standard (Standard Mode) or two kinds of power management means of high-quality pattern (PremiumMode) is provided.
Selecting type back-up source feeding mechanism of the present utility model is powered and is used to real-time clock and memory cell, and it includes backup battery, the first power supply output unit and second source output unit.Wherein, backup battery output reserve voltage.The first power supply output unit is connected in this backup battery and this real-time clock, receives this reserve voltage and exports the first supply voltage to this real-time clock.The second source output unit is connected in this backup battery and this memory cell, receives this reserve voltage, and according to selecting signal, gives this memory cell or stop to export this second supply voltage and export the second supply voltage.
Aforesaid selecting type back-up source feeding mechanism further includes charhing unit and is connected in this backup battery, and this charhing unit output charging voltage is to charge to this backup battery.
Aforesaid selecting type back-up source feeding mechanism further includes main battery and is connected in this memory cell and this charhing unit, and this main battery is exported first principal voltage and given this memory cell and export second principal voltage to this charhing unit.
Aforesaid selecting type back-up source feeding mechanism, this charhing unit includes: reduction voltage circuit is connected in this main battery, in order to downgrade this second principal voltage to produce this charging voltage; And current limit circuit, be connected in this reduction voltage circuit, in order to the size of restriction charging current.
Aforesaid selecting type back-up source feeding mechanism further includes the voltage clamp element and is connected in this main battery and this first power supply output unit, this first supply voltage of this voltage clamp element strangulation.
Aforesaid selecting type back-up source feeding mechanism, this voltage clamp element is a Zener diode.
Aforesaid selecting type back-up source feeding mechanism, this first power supply output unit prevent this reserve voltage over-discharge can and produce this first supply voltage.
Aforesaid selecting type back-up source feeding mechanism, this second source output unit prevent reserve voltage over-discharge can and produce this second supply voltage.
Aforesaid selecting type back-up source feeding mechanism, this memory cell is a Synchronous Dynamic Random Access Memory.
According to aforementioned, the utility model is under the situation of low power supply supply (Low Battery) at palmtop computer, can be according to selecting the signal output second supply voltage to give memory cell, with the selection of mode standard (Standard Mode) as the power management means, perhaps, stop this second output of supplying voltage according to the selection signal, and with the selection of high-quality pattern (Premium Mode) as the power management means.Therefore, the utility model carries out the selection of mode standard (Standard Mode) and two kinds of power management means of high-quality pattern (Premium Mode) in order to provide palmtop computer under the situation of low power supply supply (Low Battery).
Description of drawings
Fig. 1 is the block schematic diagram of the power supply device of traditional palmtop computer; And
Fig. 2 is the circuit box schematic diagram of the utility model selecting type back-up source feeding mechanism.
And each description of reference numerals in the above-mentioned accompanying drawing is as follows:
Known:
1 power supply device
2 real-time clocks
3 memory cell
14 main batterys
16 power supply output units
18 backup batteries
19 charhing units
The utility model:
2 real-time clocks
3 memory cell
4 selecting type back-up source feeding mechanisms
40 main batterys
42 first power supply output units
44 second source output units
46 backup batteries
48 charhing units
480 current limit circuits
482 reduction voltage circuits
49 voltage clamp elements
Vb reserve voltage
The Vc charging voltage
The V1 first supply voltage
The V2 second supply voltage
V3 first principal voltage
V4 second principal voltage
S1 selects signal
Embodiment
Please refer to Fig. 2, be the circuit box schematic diagram of the utility model selecting type back-up source feeding mechanism.Selecting type back-up source feeding mechanism 4 is useful in the palmtop computer (Pocket PC), is connected in real-time clock 2 and memory cell 3, and is able to use for real-time clock 2 and memory cell 3 according to selecting signal S1 and supply electric power.Wherein, memory cell 3 can be Synchronous Dynamic Random Access Memory (SDRAM).
Selecting type back-up source feeding mechanism 4 of the present utility model mainly includes backup battery 46, the first power supply output unit 42 and second source output unit 44.Wherein, backup battery 46 is in order to output reserve voltage Vb.The first power supply output unit 42 is connected in backup battery 46 and real-time clock 2, and it receives reserve voltage Vb, and exports the first supply voltage V1 and use for real-time clock 2.And second source output unit 44 is connected in backup battery 46 and memory cell 3, and it receives reserve voltage Vb, and according to selecting signal S1, gives memory cell 3 or stop to export the second supply voltage V2 and export the second supply voltage V2.
In addition, the first power supply output unit 42 provides deep-discharge protection, preventing reserve voltage Vb to the first power supply output unit, 42 over-discharge can, and, also provide power supply and produce function, produce this first supply voltage V1 with foundation reserve voltage Vb.Similarly, second source output unit 44 also provides deep-discharge protection, preventing reserve voltage Vb to its over-discharge can, and, also provide power supply and produce function, produce this second supply voltage V2 with foundation reserve voltage Vb.
Again with reference to figure 2, selecting type back-up source feeding mechanism 4 of the present utility model also comprises charhing unit 48 and main battery 40, and charhing unit 48 is connected in backup battery 46 and main battery 40, receives the second principal voltage V4 from main battery 40, and output charging voltage Vc, so that backup battery 46 is charged.In addition, main battery 40 also is connected in memory cell 3, exports the first principal voltage V3 and uses for memory cell 3.Charhing unit 48 has reduction voltage circuit 482 and current limit circuit 480, and wherein, reduction voltage circuit 482 is connected in main battery 40, in order to downgrade the second principal voltage V4 to produce charging voltage Vc.And current limit circuit is connected in reduction voltage circuit 482, in order to the size of restriction charging current.
With reference to figure 2, selecting type back-up source feeding mechanism 4 also comprises voltage clamp element 49 again, and voltage clamp element 49 is connected in the main battery 40 and the first power supply output unit 42, in order to the output of the strangulation first supply voltage V 1.Wherein, voltage clamp element 49 can be Zener diode.When the palmtop computer normal boot-strap, main battery 40 will be powered and be used to memory cell 3, and use for real-time clock 2 by 49 power supplies of voltage clamp element, and simultaneously, main battery 40 can be by 46 chargings of 48 pairs of backup batteries of charhing unit.When main battery 40 is in low power supply status, real-time clock 2 will be obtained the first supply voltage V1 to keep work from the first power supply output unit 42, at this moment, voltage clamp element 49 will be supplied to real-time clock 2 to use so that stable power to be provided in order to the strangulation first supply voltage V1.
With reference to figure 2, second source output unit 44 can be according to selecting signal S1 again, and output the second supply voltage V2 give memory cell 3, and with the selection of mode standard (Standard Mode) as power management.Perhaps, second source output unit 44 stops to export this second supply voltage V2 and gives memory cell 3 according to selecting signal S1, and with the selection of high-quality pattern (Premium Mode) as power management.
With reference to figure 2, the user can will select signal S 1 to be made as high potential again " HIGH ", at this moment, selecting type back-up source feeding mechanism 4 of the present utility model will be operated under the management of mode standard (StandardMode).When selecting type back-up source feeding mechanism 4 of the present utility model is operated in following time of management of mode standard (Standard Mode), if the main battery of palmtop computer exhausts, then backup battery 46 will start.Backup battery 46 after the startup is promptly sent reserve voltage Vb and is given the first power supply output unit 42 and second source output unit 44, and then power supply simultaneously uses for real-time clock 2 and memory cell 3.
In addition, to detect the capacity of main battery 40 low during to preset value when system, the caution that can send low power supply (Low Battery) immediately, and system can force to enter standby mode (suspend).At this moment, main battery 40 can be reserved certain capacitance, keeps about 72 hours to supply with memory cell 3.Simultaneously, the user can be after system enters holding state within 72 hours, change the action of main battery 40 or main battery 40 is charged, (replacing time will at backup battery 46 within depleted about 30 minutes).
After changing main battery 40 backs or main battery 40 and finishing charging, the user restarts power button, just can be returned to enter originally to force identical situation before the holding state, and this is because of there being continued power to give the achievement of memory cell 3.
Under the management of mode standard (Standard Mode), backup battery 46 needs supply electric power to use for real-time clock 2, and cooperate main battery 40 together to supply electric power and use for memory cell 3, therefore, the electric power of supply only can allow real-time clock 2 and memory cell 3 keep about 30 to 90 minutes.In this holds time, the document data that palmtop computer produced can be stored in the memory cell 3, aforementioned document data has comprised editor's data, the program in using and other set point etc., and simultaneously, real-time clock 2 also will keep states such as the date, time of palmtop computer.In aforementioned, because memory cell 3 is Synchronous Dynamic Random Access Memory (SDRAM), so after the power drain of main battery 40 and backup battery 46, the document data that leaves in the memory cell 3 will disappear.
With reference to figure 2, the user can will select signal S1 to be made as electronegative potential " LOW " again, and at this moment, selecting type back-up source feeding mechanism 4 of the present utility model will be operated under the management of high-quality pattern (PremiumMode).When selecting type back-up source feeding mechanism 4 of the present utility model is operated in following time of management of high-quality pattern (Premium Mode), if the main battery of palmtop computer exhausts, then backup battery 46 will start.
Backup battery 46 after the startup is promptly sent reserve voltage Vb and is given the first power supply output unit 42, and then power supply uses for real-time clock 2.Under high-quality pattern (Premium Mode), second source output unit 44 can stop to export the second supply voltage V2 and use for memory cell 3.Therefore, under high-quality pattern (Premium Mode), backup battery 46 only need provide electric power to use to real-time clock 2, so states such as the date of palmtop computer, time can keep about 168 hours, reaches long preservation.
In addition, to detect the capacity of main battery 40 low during to preset value when system, and the caution that can send low power supply (Low Battery) immediately still, can't force to enter standby mode (suspend).At this moment, the user still can continue to use palmtop computer, therefore, main battery 40 does not need to reserve capacitance, so use the time of palmtop computer to elongate, but whole system comprises that memory cell 3 will not have electric power to go to keep, and will wholely shut down after the power drain.After shutdown, change main battery 40 or main battery 40 is charged, and allow voltage height to a degree, restart power key again, will become start again.
In sum, the utility model is under the situation of low power supply supply (Low Battery) at palmtop computer, the second source output unit can be according to selecting the signal output second supply voltage to give memory cell, with the selection of mode standard (Standard Mode) as the power management means, perhaps, stop this second output of supplying voltage according to the selection signal, and with the selection of high-quality pattern (PremiumMode) as the power management means.Therefore, the utility model carries out the selection of mode standard (Standard Mode) and two kinds of power management means of high-quality pattern (Premium Mode) in order to provide palmtop computer under the situation of low power supply supply (Low Battery).
But the above only is the detailed description and the accompanying drawing of the specific embodiment of one of the utility model the best, and variation that any those skilled in the art can expect in field of the present utility model easily or modification all can be encompassed in the following claim scope of the present utility model.
Claims (9)
1. a selecting type back-up source feeding mechanism is characterized in that, power supply uses for real-time clock and memory cell, includes:
Backup battery, output reserve voltage;
The first power supply output unit is connected in this backup battery and this real-time clock, and this first power supply output unit receives this reserve voltage, and exports the first supply voltage and give this real-time clock; And
The second source output unit is connected in this backup battery and this memory cell, and this second source output unit receives this reserve voltage, and according to selecting signal, the output second supply voltage is given this memory cell or stopped to export this second supply voltage.
2. selecting type back-up source feeding mechanism as claimed in claim 1 is characterized in that, further includes: charhing unit, be connected in this backup battery, and this charhing unit output charging voltage is to charge to this backup battery.
3. selecting type back-up source feeding mechanism as claimed in claim 2, it is characterized in that, further include: main battery, be connected in this memory cell and this charhing unit, this main battery is exported first principal voltage and is given this memory cell and export second principal voltage to this charhing unit.
4. selecting type back-up source feeding mechanism as claimed in claim 3 is characterized in that this charhing unit includes:
Reduction voltage circuit is connected in this main battery, in order to downgrade this second principal voltage to produce this charging voltage; And
Current limit circuit is connected in this reduction voltage circuit, in order to the size of restriction charging current.
5. selecting type back-up source feeding mechanism as claimed in claim 3 is characterized in that, further includes: the voltage clamp element is connected in this main battery and this first power supply output unit, this first supply voltage of this voltage clamp element strangulation.
6. selecting type back-up source feeding mechanism as claimed in claim 5 is characterized in that this voltage clamp element is a Zener diode.
7. selecting type back-up source feeding mechanism as claimed in claim 1 is characterized in that, this first power supply output unit prevents this reserve voltage over-discharge can and produces this first supply voltage.
8. selecting type back-up source feeding mechanism as claimed in claim 1 is characterized in that, this second source output unit prevents reserve voltage over-discharge can and produces this second supply voltage.
9. selecting type back-up source feeding mechanism as claimed in claim 1 is characterized in that this memory cell is a Synchronous Dynamic Random Access Memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200012121U CN201160226Y (en) | 2008-01-09 | 2008-01-09 | Selective back-up power supply apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200012121U CN201160226Y (en) | 2008-01-09 | 2008-01-09 | Selective back-up power supply apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201160226Y true CN201160226Y (en) | 2008-12-03 |
Family
ID=40110807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200012121U Expired - Lifetime CN201160226Y (en) | 2008-01-09 | 2008-01-09 | Selective back-up power supply apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201160226Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167807A (en) * | 2014-08-01 | 2014-11-26 | 科立讯通信股份有限公司 | RTC power source circuit of digital wireless terminal |
-
2008
- 2008-01-09 CN CNU2008200012121U patent/CN201160226Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167807A (en) * | 2014-08-01 | 2014-11-26 | 科立讯通信股份有限公司 | RTC power source circuit of digital wireless terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUANXU ELECTRONICS CO., LTD. Free format text: FORMER OWNER: HUANLONG ELECTRIC CO LTD Effective date: 20110216 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: NANTOU COUNTY, TAIWAN PROVINCE, CHINA TO: 201203 NO. 1558, ZHANGDONG ROAD, ZHANGJIANG HIGH-TECH. PARK, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110216 Address after: 201203 Shanghai Zhangjiang hi tech park, Zhang Road No. 1558 Patentee after: Huanxu Electronics Co., Ltd. Address before: Taiwan Nantou County Chinese Patentee before: Huanlong Electric Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081203 |