CN1200328C - Power supply management method for palm equipment - Google Patents
Power supply management method for palm equipment Download PDFInfo
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- CN1200328C CN1200328C CN 03137407 CN03137407A CN1200328C CN 1200328 C CN1200328 C CN 1200328C CN 03137407 CN03137407 CN 03137407 CN 03137407 A CN03137407 A CN 03137407A CN 1200328 C CN1200328 C CN 1200328C
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- hand
- held device
- power supply
- voltage
- dry cell
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Abstract
The present invention provides a power supply management method for palm devices. The palm devices are supplied with electricity by rechargeable batteries and can use dry batteries as emergency power supplies. The present invention manages power supplies according to the following method: a voltage critical value V0 is set and is lower than the normal working voltage V1 of the palm devices; firstly, rechargeable batteries are selected to supply electricity, and the voltage V of rechargeable batteries is detected; V and V0 are compared, if V is equal to or large than V0, rechargeable batteries are continuously used to supply electricity; otherwise, the electric supply of rechargeable batteries is cut off, and further, the voltage V of dry batteries is detected; V and V0 are compared, if V is equal to or large than V0, dry batteries are used to supply electricity to the palm devices; otherwise, the palm devices automatically turn off. The power supply managing method causes rechargeable batteries and dry batteries to be simultaneously used on the palm devices; when rechargeable batteries are undervoltage, dry batteries can be used as emergency power supplies.
Description
Technical field:
The invention belongs to the control and the administrative skill field of power supply, relate in particular to the method for managing power supply of the hand-held device that adopts the rechargeable battery power supply.
Background technology:
Current, hand-held device uses single rechargeable battery electric power system more, as adopting the palm PC of lithium battery power supply, e-commerce etc.Adopt the hand-held device of this single power supply mode, run into undertension and can't use power supply adaptor to use the problem of ac power supply instead through regular meeting during use.Especially when outdoor application, this situation especially more sees.If can bring great convenience to the user so this moment with dry cell as emergency power pack.
Summary of the invention:
The purpose of this invention is to provide a kind of method for managing power supply that is used for hand-held device, how in the hand-held device that uses the rechargeable battery power supply, to use dry cell to do the problem of emergency power pack simultaneously to solve.
Technical scheme of the present invention is as follows:
A kind of method for managing power supply that is used for hand-held device, described hand-held device use the rechargeable battery power supply, and described hand-held device also adopts dry cell as emergency power pack, and power supply is carried out following management (idiographic flow is referring to Fig. 1):
Set a predeterminated voltage critical value V
0, this critical value is lower than hand-held device normal working voltage V
1
At first select rechargeable battery to power, and detect the voltage V of rechargeable battery, with the magnitude of voltage V and the preset critical V of detected rechargeable battery
0Compare and take following measure respectively:
1. as V 〉=V
0The time, then continue to adopt the rechargeable battery power supply;
2. as V＜V
0The time, then cut off the power supply of rechargeable battery automatically to hand-held device;
Further detect the voltage V ' of dry cell, with the magnitude of voltage V ' and the preset critical V of detected dry cell
0Compare and take following measure respectively:
1. as V ' 〉=V
0The time, then adopt dry cell to the palm power devices;
2. as V '＜V
0The time, then hand-held device shuts down automatically.
Further, because the voltage of rechargeable battery such as lithium battery is mostly at 4.1V and 4.2V, and the capacity of No. 5 or No. 7 dry cells of two joints is respectively 3V and 2.4V, if the voltage of the system works of hand-held device is 3.3V, two kinds of batteries just can not provide normal operating voltage for hand-held device so.In order to address this problem, described hand-held device comprises a power management chip that can boost and can step-down, works as V
0≤ V≤V
1Perhaps V
0≤ V '≤V
1The time, then described power management chip boosts to V with V or V '
1As V＞V
1Perhaps V '＞V
1The time, then described power management chip is depressurized to V with V or V '
1
Described a kind of method for managing power supply that is used for hand-held device when hand-held device changes by dry cell power supply, produces a warning message, and notice rechargeable battery voltage is low, requires the rechargeable battery charging, and the prompting hand-held device changes by dry cell power supply; When dry cell voltage is lower than predeterminated voltage critical value V
0The time, producing a warning message, notice dry cell voltage is low, require to change battery, otherwise hand-held device will shutdown automatically behind certain hour.Described warning message can be notified by a display or loudspeaker.
Advantage of the present invention and good effect: adopt method for managing power supply of the present invention, can provide a rational electric power supply system for hand-held device, can only use single rechargeable battery powerup issue to change current hand-held device, make chargeable battery and dry cell on hand-held device, to use simultaneously, when the rechargeable battery undertension, can adopt dry cell as emergency power pack.
Description of drawings:
Fig. 1 is the process flow diagram of method for managing power supply of the present invention.
Fig. 2 is for adopting the system architecture synoptic diagram of method for managing power supply of the present invention.
Embodiment:
This part provides an example that adopts technical solution of the present invention, allows rechargeable battery and dry cell use an identical cover power management scheme, and making rechargeable battery and dry cell give a normal working voltage is V
1=3.3 volts hand-held device power supply.Rechargeable battery is a lithium battery, and the voltage when it charges fully is 4.1 volts.Dry cell is No. 5 brand-new batteries of two joints, and 3 volts of voltages can be provided.Predeterminated voltage critical value V
0=2.8 volts.
As shown in Figure 2, in hand-held device, lithium battery links to each other with power management chip by a change-over switch with dry cell, and this change-over switch is preferentially to select for use lithium battery to power.Power management chip adopts one can DC-DC to boost and IC chip that can the DC-DC step-down, and this chip can have been bought in market, the product of producing as TI company.Electric weight testing circuit detects the voltage of lithium battery and dry cell.A controller comes control its switch, power management chip, LCD display (perhaps loudspeaker) according to the testing result of electric weight testing circuit.
During the hand-held device start, change-over switch is selected lithium battery power supply, and the electric weight testing circuit detects the voltage V=4.1 volt of lithium battery, because the V=4.1 volt is greater than V
0, then continue to adopt lithium battery power supply at=2.8 o'clock; Simultaneously, since V=4.1 greater than V
1=3.3 volts, controller control power management chip is operated in the step-down state, and voltage step-down to 3.3 is lied prostrate.Along with the electric weight of lithium battery constantly is consumed, its voltage that provides constantly reduces, and works as V
0≤ V≤V
1The time, then controller control power management chip is operated in pressure-increasning state, and boost in voltage to 3.3 is lied prostrate.Along with the electric weight of lithium battery continues to be consumed, its voltage that provides continues to reduce, as V＜V
0In the time of=2.8 volts, controller cuts off lithium battery power supply by control its switch, changes by dry cell power supply, and controller is by the display screen display alarm information simultaneously: lithium battery forces down, and please to lithium cell charging, hand-held device changes by dry cell power supply.
No. 5 brand-new dry cells of two joints that 3 volts of voltages can be provided this moment are as emergency power pack, and the electric weight testing circuit detects the voltage V=3 volt of dry cell, less than hand-held device normal working voltage V
1=3.3 volts, controller control power management chip is operated in pressure-increasning state, and boost in voltage to 3.3 is lied prostrate.Along with the electric weight of dry cell constantly is consumed, its voltage that provides constantly reduces, and when V＜2.8 volt, controller is by the display screen display alarm information: dry cell voltage is low, please change battery, otherwise system will shutdown automatically after 10 seconds.
Claims (4)
1. method for managing power supply that is used for hand-held device, described hand-held device use the rechargeable battery power supply, it is characterized in that described hand-held device also adopts dry cell as emergency power pack, and power supply is carried out following management:
Set a charge threshold level V
0, this critical value is lower than hand-held device normal working voltage V
1
At first select rechargeable battery to power, and detect the voltage V of rechargeable battery, relatively V and V
0And take following measure respectively: if V 〉=V
0, then continue to adopt the rechargeable battery power supply; If V＜V
0, then cut off the power supply of rechargeable battery to hand-held device;
Further detect the voltage V ' of dry cell, relatively V ' and V
0And take following measure respectively: if V ' 〉=V
0, then adopt dry cell to the palm power devices; If V '＜V
0, then hand-held device shuts down automatically.
2. a kind of method for managing power supply that is used for hand-held device as claimed in claim 1 is characterized in that, described hand-held device also comprises a power management chip that can boost and can step-down, works as V
0≤ V≤V
1Or V
0≤ V '≤V
1The time, then described power management chip boosts to V with V or V '
1As V＞V
1Perhaps V '＞V
1The time, then described power management chip is depressurized to V with V or V '
1
3. a kind of method for managing power supply that is used for hand-held device as claimed in claim 1 or 2 is characterized in that, when hand-held device changes by dry cell power supply, produce a warning message, notice rechargeable battery voltage is low, requires the rechargeable battery charging, and the prompting hand-held device changes by dry cell power supply; Be lower than the charge threshold level V of setting when dry cell voltage
0The time, producing a warning message, notice dry cell voltage is low, require to change battery, otherwise hand-held device will shutdown automatically behind certain hour.
4. a kind of method for managing power supply that is used for hand-held device as claimed in claim 3 is characterized in that, notifies described warning message by a display or loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03137407 CN1200328C (en) | 2003-06-19 | 2003-06-19 | Power supply management method for palm equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03137407 CN1200328C (en) | 2003-06-19 | 2003-06-19 | Power supply management method for palm equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1462923A CN1462923A (en) | 2003-12-24 |
| CN1200328C true CN1200328C (en) | 2005-05-04 |
Family
ID=29748541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03137407 Expired - Fee Related CN1200328C (en) | 2003-06-19 | 2003-06-19 | Power supply management method for palm equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1200328C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101202458B (en) * | 2006-12-13 | 2012-03-21 | 英业达股份有限公司 | Power supply circuit |
| WO2008133336A1 (en) | 2007-04-23 | 2008-11-06 | Sony Corporation | Electronic device, control method and program |
| CN101907913B (en) * | 2009-06-05 | 2011-12-21 | 英业达股份有限公司 | Server |
| CN102467214A (en) * | 2010-11-05 | 2012-05-23 | 英业达股份有限公司 | Power management method |
-
2003
- 2003-06-19 CN CN 03137407 patent/CN1200328C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1462923A (en) | 2003-12-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ACER COMPUTER (CHINA) CO., LTD. Free format text: FORMER OWNER: BEIDA FANGZHENG SCIENCE + TECHNOLOGY COMPUTER SYSTEM CO., LTD., SHANGHAI Effective date: 20101029 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100085 ROOM 204, SECONDARY BUILDING, FANGZHENG BUILDING, NO.9, SHANGDI STREET 5, HAIDIAN DISTRICT, BEIJING TO: 200001 3/F, NO.168, XIZANG MIDDLE ROAD, HUANGPU DISTRICT, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101029 Address after: 3, No. 168 middle Tibet Road, No. 200001, Shanghai, Huangpu District Patentee after: Acer Computer (Shanghai) Co., Ltd. Address before: 100085, Room 204, building nine, fangzheng building, five street, Haidian District, Beijing Patentee before: Beida Fangzheng Science & Technology Computer System Co., Ltd., Shanghai |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050504 Termination date: 20190619 |