CN2424487Y - Emergency power supply of notebook computer - Google Patents
Emergency power supply of notebook computer Download PDFInfo
- Publication number
- CN2424487Y CN2424487Y CN 00205365 CN00205365U CN2424487Y CN 2424487 Y CN2424487 Y CN 2424487Y CN 00205365 CN00205365 CN 00205365 CN 00205365 U CN00205365 U CN 00205365U CN 2424487 Y CN2424487 Y CN 2424487Y
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- China
- Prior art keywords
- notebook computer
- power supply
- battery
- standby power
- supply device
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- Expired - Lifetime
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Abstract
The utility model relates to an emergency power supply of a notebook computer, which comprises a standby battery group used for supplying spare power source, a power sensing unit used for detecting internal battery power supply condition of a notebook computer and used for generating an opposite logic signal, a logical operation unit which carries out logical operation according to the logical signal and generates a starting signal, and a brake control unit used for supplying electric power to the notebook computer and for starting the spare power supply according to the starting signal. The utility model can provide temporary power supply when the power of an internal battery of a notebook computer is low to cause the user to have sufficient time to replace the battery under the condition of uninterrupted computer operation system.
Description
The utility model relates to a kind of supply unit, especially relates to a kind of standby power supply device that is applied to notebook computer.
In the informatization epoch, using computer comes back work to become main trend, in order to satisfy various business people's demand, then produced and carried the type computer, it is the volume-diminished with the every lens in the PC, thereby becomes the about and much the same notebook computer of notebook of volume size, thus, computer is also become a kind of carry-along data processor, makes the user can carry out Data Processing anywhere or anytime, has also correspondingly extended the workplace simultaneously.
Unquestionable, the running of computer must need the supply of power supply, therefore, in order to reach portable effect, notebook computer generally is to adopt battery to be used as the source of its power supply supply, but when battery electric power uses, just must be to battery charge, notebook computer could obtain the power supply supply and continue running like this.
The employed battery of notebook computer now, no matter be lithium battery or Ni-MH battery, on average between two to three hours, therefore for the user that need often use notebook computer, all must prepare two batteries usually for the possible period of want or need its service time.So, in the time of first battery electric power deficiency, the user can supply with required electric power with another reserve battery, so that work is carried out and unlikely interruption.In addition, in order to reduce the inconvenience of changing battery, also can design the source of two batteries as power supply in the inside of notebook computer, its inner also design simultaneously has electricity exchange (HOT SWAP) circuit, when first battery electric power is not enough, electricity exchange (HOT SWAP) circuit can switch to the power supply supply second battery automatically, allows the user can continue to use notebook computer, and makes work be unlikely interruption.
Yet when two batteries of notebook computer did not all have electricity or have only a battery can't carry out electricity exchange (HOT SWAP), the problem of power supply supply occurred again once again.
As from the foregoing, the powered battery ability of notebook computer is the principal element that influences the notebook computer running time, not only the power supply supply time of notebook computer is all expected to increase by each tame notebook computer manufacturer, the user also there's no one who doesn't or isn't wishes to prolong the running time of notebook computer, all do not wish power shortage, and make operation disruption influence the carrying out of work because of battery.
The purpose of this utility model is to provide a kind of standby power supply device of notebook computer, when two batteries of notebook computer all do not have electricity or have only a battery can't carry out the electricity exchange, the user that can guarantee notebook computer is under the unbroken situation of system, have adequate time to change battery, producer need not change too many design yet simultaneously.
For achieving the above object, the standby power supply device of notebook computer of the present utility model is characterized in that: include:
One provides the battery backup of standby power supply;
One electric power that detects the internal battery power supply condition of this notebook computer and produce a relative logic signal detects the unit;
One carries out logical operation and produces an arithmetic logic unit that starts signal according to this logic signal; And
One starts the lock control unit of this standby power supply for electric power that should notebook computer according to this startup signal.
The standby power supply device of described notebook computer is characterized in that: this arithmetic logic unit is made up of several logic locks.
The standby power supply device of described notebook computer is characterized in that: this arithmetic logic unit is to be made of a plurality of OR logic locks, NAND logic lock, AND logic lock, phase inverter; This lock control unit comprises a transistor and a diode, one end of this lock control unit is connected with this arithmetic logic unit, the other end of this lock control unit links to each other with this battery backup, and the two ends again of this lock control unit connect the internal cell and the load of this notebook computer respectively.
The standby power supply device of described notebook computer is characterized in that: this battery backup is a dry cell.
The standby power supply device of described notebook computer is characterized in that: this battery backup is the alkali battery.
The standby power supply device of described notebook computer is characterized in that: this battery backup is a Ni-MH battery.
The standby power supply device of described notebook computer is characterized in that: this battery backup is arranged in the groove of offering on this notebook computer housing.
The standby power supply device of described notebook computer is characterized in that: this battery backup is arranged on the handle of this notebook computer.
The standby power supply device of described notebook computer is characterized in that: offer an opening on this handle, this battery backup is placed in this opening, and this opening is provided with a loam cake.
After having adopted said structure, the standby power supply device of notebook computer of the present utility model, detect the electric power supply state of unit by electric power according to notebook computer, produce a relative logic signal, and produce one by arithmetic logic unit according to this logic signal and start signal, start signal by lock control unit according to this again and start standby power supply with interim power supply as this notebook computer, thereby continued the running time of notebook computer, make the user under the not interrupted situation of work, have adequate time to change battery.
Below, with specific embodiment the utility model is done further detailed description in conjunction with the accompanying drawings.
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2 is a detailed circuit diagram of the present utility model.
Fig. 3 A is the installation position synoptic diagram of battery backup in the utility model.
Fig. 3 B is another installation position synoptic diagram of battery backup in the utility model.
As shown in Figures 1 and 2, notebook computer under the normal situation of supply of electric power, be by One internal cell 4 is supplied with the required electric power of load 6 of notebook computers, and at internal cell 4 Power drain or this circuit generation effect can't carry out electricity exchange (HOT SWAP) time. Notebook computer stand-by power supply of the present utility model mainly comprises: a battery backup 5, in order to Stand-by power supply is provided; One electric power inspection unit 2, the electric power that is used for this notebook computer of detecting supplies The state of giving, and produce a corresponding logic signal; One ALU 1 is according to being somebody's turn to do Logic signal carries out logical operation, and produces a startup signal; And a lock control unit 3, root Start signal according to this, start this stand-by power supply, for electric power that should notebook computer.
Wherein, the corresponding signal that electric power inspection unit 2 produces is the logic signal of AC power supplies and battery power status, have five states, represent with symbol AC, BATT1PRE, BATT1LOW, BATT2PRE, BATT2LOW respectively, the truth table of its logic signal as shown in Table 1:
Table one: input signal truth table
| State | AC | BATT1PRE | BATT1LOW | BATT2PRE | BATT2LOW |
| Logical value | 0 | 0 | 0 | 1 | 1 |
| Logical value | 0 | 0 | 0 | 0 | X |
Annotate: never mind in the X representative (DON ' T CARE)
Wherein the meaning of representative is as follows: AC represents the supply status of AC power supplies, the AC=0 representative Do not have the AC power supplies supply, the AC=1 representative has the supply of AVC power supply; BATT1 represents first battery, BATT2 represents second battery, and whether enough PRE represents battery (ON LINE), and LOW represents electricity Whether pond electric power is not enough, and therefore, BATT1PRE=0 and BATT2PRE=0 represent first and second Battery is sufficient (ON LINE) not yet, and BATT1PRE=1 and BATT2PRE=1 represent first and second Battery is foot (ON LINE), and BATT1LOW=1 and BATT2LOW=1 represent first and second The battery electric power deficiency.
This ALU 1 is by OR logic lock 10,11,13, NAN The electronic components such as D logic lock 12, AND logic lock 14, phase inverter 15 consist of; This lock control unit 3 comprises a transistor 31 and diode 32, and transistor 31 can be NP N or field-effect transistor (being field-effect transistor in the present embodiment); This battery backup 5 is one As the expendable dry cell, better for Ni-MH battery or alkali battery, but need often to safeguard Or upgrade.
As follows, be first embodiment of the present utility model, wherein notebook computer has two batteries.
Supply electric power if be equiped with two batteries in user's the notebook computer, then when first battery electric power is not enough, electricity exchange (HOT SWAP) circuit in the notebook computer can switch to the power supply supply second battery, is supplied the electric power of notebook computer by second battery; And when second battery was also not enough, the power supply of notebook computer will be supplied by standby power supply.By battery powered in the notebook computer time, because P point is a noble potential, the amplification of N point and transistor 31 is electronegative potential very, so transistor 31 and diode 32 can conductings, so can guarantee power source use internal cell but not battery backup 5.
Electric power detects the 2 pairs of internal cells in unit and detects, and produce the power state signal to power supply state signal group, when battery electric power was not enough, the logic input state of power supply state signal group was AC=0, BATT1PRE=0, BATT1LOW=0, BATT2PRE=1, BATT2LOW=1, it represents no AC power supplies, first battery be foot (ON LINE) not, and second battery be (ONLINE) and power shortage enough.And the input signal of corresponding logic lock is in the arithmetic logic unit 1: OR logic lock 10 is (0001), OR logic lock 11 is (000), NAND logic lock 12 is (11), its pairing output signal is respectively 1,0,0, and the output signal (00) of logic lock 11 and logic lock 12, signal after handling via OR logic lock 13 again is 0, be output as 1 after the processing via logic lock 14 and 15 jointly with the output signal 1 of logic lock 10, the base stage of transistor 31 is a noble potential at the same time, launch very electronegative potential, make transistor 31 conductings, and the N point is a noble potential, the P point is an electronegative potential, and diode 32 also can conducting, and so the power supply supply of load 6 switches to battery backup 5 by the internal cell in the notebook computer 4.When the power supply supply switched to battery backup 5, the user can change battery in during this period of time, and notebook computer need not be shut down, and makes work be continued.
The following is second embodiment of the present utility model, wherein, notebook computer has only a battery.
When having only a battery in the notebook computer, when not having electricity, must do electricity exchange (HOT SWAP), though if any civil power when using, can be with battery charge, if but the user be can't find operational civil power outside the time, the utility model just can help the user to change battery.
In such cases, power supply state signal group is (0000X), and similar first embodiment is described for the processing procedure of its signal, is not described in detail in this.Input signal (0000X) is respectively after the processing via the logic lock, make that the current potential of amplifying stage of transistor 31 is a noble potential, and because base stage also is a noble potential, make transistor 31 conductings, and the N point is a noble potential, the P point is an electronegative potential, also conducting of diode 32, the power supply supply is switched to battery backup 5 by internal cell 4, and so, the user can also utilize and change battery during this period of time.
The above is that circuit of the present utility model describes in detail, and in addition, the installation position of battery backup 5 can be for the groove 71 of battery backup 5 placements, with installing battery backup 5 (as shown in Figure 3A) for be provided with one on the housing of notebook computer 7; In addition, shown in Fig. 3 B, also battery backup 5 can be arranged in the carrying handle 72 of notebook computer 7, and on handle 72, offer an opening and a loam cake 73, to change this battery backup 5.
Claims (9)
1. the standby power supply device of a notebook computer is characterized in that: include:
One provides the battery backup of standby power supply;
One electric power that detects the internal battery power supply condition of this notebook computer and produce a relative logic signal detects the unit;
One carries out logical operation and produces an arithmetic logic unit that starts signal according to this logic signal; And
One starts the lock control unit of this standby power supply for electric power that should notebook computer according to this startup signal.
2. the standby power supply device of notebook computer as claimed in claim 1, it is characterized in that: this arithmetic logic unit is made up of several logic locks.
3. the standby power supply device of notebook computer as claimed in claim 1, it is characterized in that: this arithmetic logic unit is to be made of a plurality of OR logic locks, NAND logic lock, AND logic lock, phase inverter; This lock control unit comprises a transistor and a diode, one end of this lock control unit is connected with this arithmetic logic unit, the other end of this lock control unit links to each other with this battery backup, and the two ends again of this lock control unit connect the internal cell and the load of this notebook computer respectively.
4. as the standby power supply device of claim 1 or 2 or 3 described notebook computers, it is characterized in that: this battery backup is a dry cell.
5. the standby power supply device of notebook computer as claimed in claim 4, it is characterized in that: this battery backup is the alkali battery.
6. the standby power supply device of notebook computer as claimed in claim 4, it is characterized in that: this battery backup is a Ni-MH battery.
7. as the standby power supply device of claim 1 or 2 or 3 described notebook computers, it is characterized in that: this battery backup is arranged in the groove of offering on this notebook computer housing.
8. as the standby power supply device of claim 1 or 2 or 3 described notebook computers, it is characterized in that: this battery backup is arranged on the handle of this notebook computer.
9. the standby power supply device of notebook computer as claimed in claim 8, it is characterized in that: offer an opening on this handle, this battery backup is placed in this opening, and this opening is provided with a loam cake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00205365 CN2424487Y (en) | 2000-03-13 | 2000-03-13 | Emergency power supply of notebook computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00205365 CN2424487Y (en) | 2000-03-13 | 2000-03-13 | Emergency power supply of notebook computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2424487Y true CN2424487Y (en) | 2001-03-21 |
Family
ID=33573547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00205365 Expired - Lifetime CN2424487Y (en) | 2000-03-13 | 2000-03-13 | Emergency power supply of notebook computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2424487Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8294424B2 (en) | 2006-07-17 | 2012-10-23 | O2Micro International Limited | Monitoring battery cell voltage |
-
2000
- 2000-03-13 CN CN 00205365 patent/CN2424487Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8294424B2 (en) | 2006-07-17 | 2012-10-23 | O2Micro International Limited | Monitoring battery cell voltage |
| US8310206B2 (en) | 2006-07-17 | 2012-11-13 | O2Micro International Limited | Monitoring battery cell voltage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010321 |