CN108988300A - A kind of laptop circuit Self-disconnecting circuit structure and control method - Google Patents
A kind of laptop circuit Self-disconnecting circuit structure and control method Download PDFInfo
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- CN108988300A CN108988300A CN201810592858.XA CN201810592858A CN108988300A CN 108988300 A CN108988300 A CN 108988300A CN 201810592858 A CN201810592858 A CN 201810592858A CN 108988300 A CN108988300 A CN 108988300A
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- Prior art keywords
- chip
- electric control
- pmos tube
- power supply
- tube
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
-
- 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
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Power Sources (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of laptop circuit Self-disconnecting circuit structure and control methods, including charging management chip, charging management chip connects power supply chip, power supply chip connects electric control chip, upper electric control chip coupling system mainboard and starting key set power-off control circuit between power supply chip and upper electric control chip；Power-off control circuit includes NMOS tube and PMOS tube, the LD0 feeder ear of the source electrode connection power supply chip of PMOS tube, the grid of PMOS tube connects the LD0 feeder ear of power supply chip by pull-up resistor, the drain electrode of the grid connection NMOS tube of PMOS tube, the source electrode of NMOS tube is grounded, the first end of the grid connection pull down resistor of NMOS tube, the second end of pull down resistor connect the DIS signal end of electric control chip；The drain electrode of PMOS tube connects the end EC of upper electric control chip；Diode is set between the source electrode and drain electrode of NMOS tube；Diode is set between the source electrode and drain electrode of PMOS tube.
Description
Technical field
The invention belongs to technical field of circuit design, it is related to a kind of Self-disconnecting circuit structure and control method, especially one
Kind laptop circuit Self-disconnecting circuit structure and control method.It, can using the Self-disconnecting circuit structure and control method
The quiescent dissipation of notebook is effectively reduced, extends battery life.
Background technique
Continuous pursuit with the continuous development and progress and people of electronics technology level to living standard, notebook
Computer is applied to butcher,baker,and the candlestick maker person as a kind of portable computer.
It is well known that since there are quiescent dissipations for notebook, and its battery capacity is very when notebook stores for a long time
It is limited, it is most likely that lead to Notebook Battery over-discharge and can not work normally.
In addition, battery over-discharge equally damages battery life.When therefore in order to use battery under notebook off-mode
Between extend, prevent over-discharge from causing the cell damage service life, the prior art have been devoted to reduce notebook quiescent dissipation.But
Not this technical problem of effective solution in the prior art.This is in place of the deficiencies in the prior art.
Therefore, in view of the above-mentioned drawbacks in the prior art, provide and design a kind of laptop circuit Self-disconnecting circuit knot
Structure and control method；To solve defect existing in the prior art, it is necessary.
Summary of the invention
It is an object of the present invention to be directed to above-mentioned defect existing in the prior art, provides and design a kind of laptop
Circuit Self-disconnecting circuit structure and control method, to solve the above technical problems.
To achieve the above object, the present invention provides following technical scheme:
A kind of laptop circuit Self-disconnecting circuit structure, it includes charging management chip, which is characterized in that Charge Management core
Piece is connected with power supply chip, and power supply chip is connected with electric control chip, and upper electric control chip is connected with system board and booting
Key is additionally provided with power-off control circuit between power supply chip and upper electric control chip；
The power-off control circuit includes NMOS tube and PMOS tube, and the source electrode of PMOS tube is connected to the LD0 power supply of power supply chip
End, the grid of PMOS tube are connected to the LD0 feeder ear of power supply chip by pull-up resistor, and the grid of PMOS tube is also connected to NMOS
The drain electrode of pipe, the source electrode ground connection of NMOS tube, the grid of NMOS tube are connected to the first end of pull down resistor, the second end of pull down resistor
It is connected to the DIS signal end of electric control chip；
The drain electrode of PMOS tube connects the end EC of upper electric control chip；
Diode is provided between the source electrode and drain electrode of NMOS tube, the anode of diode is connected to the source electrode of NMOS tube, diode
Cathode be connected to the drain electrode of NMOS tube；
Diode is provided between the source electrode and drain electrode of PMOS tube, the anode of diode is connected to the drain electrode of PMOS tube, diode
Cathode be connected to the source electrode of PMOS tube.
Preferably, the second end of pull down resistor is connected by first resistor when charging management chip connects adapter
To adapter feeder ear, it is grounded by second resistance；NMOS transistor conduction, PMOS tube grid drag down, and upper electric control is connected in PMOS tube
Chip obtains electric, and DIS signal is raised.
Preferably, operating starting key, and the operation signal is sent when charging management chip only connects lithium battery
Supreme electric control chip, upper electric control chip drag down DIS signal, and NMOS tube disconnects, and the grid of PMOS tube is drawn high, and PMOS tube is disconnected
It opens, upper electric control powering down chips.
Preferably, the concrete operations of operation starting key are that long-pressing starting key is no more than 1 second；To be different from switch
Machine operation.
A kind of laptop circuit is autotomyed electric control method, comprising the following steps:
S1: determining the power supply of charging management chip, if the power supply of charging management chip is powered containing adapter, turns
To step S2, if the power supply of charging management chip only has lithium battery, step S3 is gone to；
S2: power-off control circuit conducting, upper electric control chip power on；And go to step S1；
S3: power-off control circuit disconnects, upper electric control powering down chips；And go to step S1.
Preferably, charging management chip connects adapter in the step S2, the second end of pull down resistor passes through first
Resistance is connected to adapter feeder ear, is grounded by second resistance；NMOS transistor conduction, PMOS tube grid drag down, PMOS tube conducting
Upper electric control chip obtains electric, and DIS signal is raised.
Preferably, in the step S3, charging management chip only connects lithium battery, operates starting key, and by the behaviour
It is sent to upper electric control chip as signal, upper electric control chip drags down DIS signal, and NMOS tube disconnects, and the grid of PMOS tube is drawn
Height, PMOS tube disconnect, upper electric control powering down chips.
Preferably, the concrete operations of operation starting key are that long-pressing starting key is no more than 1 second；To be different from switch
Machine operation.
The beneficial effects of the present invention are, by using technical solution provided by the invention, when using adapter power supply,
Can through the invention in circuit control electric control chip obtain it is electric；And when only with lithium battery power supply, i.e. storage of upper time notes
This when, by operating starting key, upper electric control chip drags down DIS signal, so that upper electric control powering down chips；To reduce pen
Remember this quiescent dissipation, battery uses the time under extension ray machine state.
In addition, design principle of the present invention is reliable, structure is simple, has very extensive application prospect.
It can be seen that compared with prior art, the present invention have substantive distinguishing features outstanding and it is significant ground it is progressive, implementation
Beneficial effect be also obvious.
Detailed description of the invention
Fig. 1 is a kind of laptop circuit Self-disconnecting circuit structure diagram provided by the invention.
Fig. 2 is the circuit diagram of power-off control circuit when adapter is powered in Fig. 1.
Fig. 3 be Fig. 1 only lithium battery power supply when power-off control circuit circuit diagram.
Wherein, 1- charging management chip, 2- power supply chip, the upper electric control chip of 3-, 4- system board, 5- starting key,
6- power-off control circuit, 6.1-NMOS pipe, 6.2-PMOS pipe, 6.3- pull-up resistor, 6.4- pull down resistor, 6.5- diode,
6.6- first resistor, 6.7- second resistance, 6.8- adapter feeder ear, 7- adapter, 8- lithium battery.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawing and by specific embodiment, and following embodiment is to the present invention
Explanation, and the invention is not limited to following implementation.
Embodiment 1:
As shown in Figures 1 to 3, a kind of laptop circuit Self-disconnecting circuit structure provided by the invention, it includes Charge Management
Chip 1, charging management chip 1 are connected with power supply chip 2, and power supply chip 2 is connected with electric control chip 3, upper electric control chip 3
It is connected with system board 4 and starting key 5, is additionally provided with power-off control circuit 6 between power supply chip 2 and upper electric control chip 3；
The power-off control circuit 6 includes NMOS tube 6.1 and PMOS tube 6.2, is arranged between the source electrode and drain electrode of NMOS tube 6.1
There is diode 6.5, the anode of diode is connected to the source electrode of NMOS tube 6.1, and the cathode of diode is connected to the leakage of NMOS tube 6.1
Pole；Diode 6.5 is provided between the source electrode and drain electrode of PMOS tube 6.2, the anode of diode is connected to the leakage of PMOS tube 6.2
Pole, the cathode of diode are connected to the source electrode of PMOS tube 6.2；The source electrode of PMOS tube 6.2 is connected to the LD0 power supply of power supply chip 2
End, the grid of PMOS tube 6.2 are connected to the LD0 feeder ear of power supply chip by pull-up resistor 6.3, and the grid of PMOS tube 6.2 is also
It is connected to the drain electrode of NMOS tube 6.1, the source electrode ground connection of NMOS tube 6.1, the grid of NMOS tube 6.1 is connected to pull down resistor 6.4
First end, the second end of pull down resistor 6.4 are connected to the DIS signal end of electric control chip 3；
The drain electrode of PMOS tube 6.2 connects the end EC of upper electric control chip 3；
When charging management chip 1 connects adapter 7, the second end of pull down resistor 6.4 is connected to adaptation by first resistor 6.6
Device feeder ear is grounded by second resistance 6.7；NMOS tube 6.1 is connected, and 6.2 grid of PMOS tube drags down, in the conducting of PMOS tube 6.2
Electric control chip obtains electric, and DIS signal is raised.
When charging management chip 1 only connects lithium battery 8, starting key is operated, the concrete operations for operating starting key are,
Long-pressing starting key is no more than 1 second；To be different from switching on and shutting down operation；And the operation signal is sent to upper electric control chip, on
Electric control chip drags down DIS signal, and NMOS tube disconnects, and the grid of PMOS tube is drawn high, and PMOS tube disconnects, and upper electric control chip is disconnected
Electricity.
Embodiment 2:
The present embodiment provides a kind of laptop circuit and autotomys electric control method, comprising the following steps:
S1: determining the power supply of charging management chip, if the power supply of charging management chip is powered containing adapter, turns
To step S2, if the power supply of charging management chip only has lithium battery, step S3 is gone to；
S2: power-off control circuit conducting, upper electric control chip power on；And go to step S1；Charging management chip connects adapter,
The second end of pull down resistor is connected to adapter feeder ear by first resistor, is grounded by second resistance；NMOS transistor conduction,
PMOS tube grid drags down, and electric control chip obtains electric in PMOS tube conducting, and DIS signal is raised.
S3: power-off control circuit disconnects, upper electric control powering down chips；And go to step S1；Charging management chip only connects
Lithium battery operates starting key, and the concrete operations for operating starting key are that long-pressing starting key is no more than 1 second；To be different from out
Power-off operation；And the operation signal is sent to upper electric control chip, upper electric control chip drags down DIS signal, and NMOS tube is disconnected
It opens, the grid of PMOS tube is drawn high, and PMOS tube disconnects, upper electric control powering down chips.
Disclosed above is only the preferred embodiment of the present invention, but the present invention is not limited to this, any this field
What technical staff can think does not have creative variation, and without departing from the principles of the present invention made by several improvement and
Retouching, should all be within the scope of the present invention.
Claims (8)
1. a kind of laptop circuit Self-disconnecting circuit structure, it includes charging management chip, which is characterized in that Charge Management
Chip is connected with power supply chip, and power supply chip is connected with electric control chip, and upper electric control chip is connected with system board and opens
Machine key is additionally provided with power-off control circuit between power supply chip and upper electric control chip；
The power-off control circuit includes NMOS tube and PMOS tube, and the source electrode of PMOS tube is connected to the LD0 power supply of power supply chip
End, the grid of PMOS tube are connected to the LD0 feeder ear of power supply chip by pull-up resistor, and the grid of PMOS tube is also connected to NMOS
The drain electrode of pipe, the source electrode ground connection of NMOS tube, the grid of NMOS tube are connected to the first end of pull down resistor, the second end of pull down resistor
It is connected to the DIS signal end of electric control chip；
The drain electrode of PMOS tube connects the end EC of upper electric control chip；
Diode is provided between the source electrode and drain electrode of NMOS tube, the anode of diode is connected to the source electrode of NMOS tube, diode
Cathode be connected to the drain electrode of NMOS tube；
Diode is provided between the source electrode and drain electrode of PMOS tube, the anode of diode is connected to the drain electrode of PMOS tube, diode
Cathode be connected to the source electrode of PMOS tube.
2. a kind of laptop circuit Self-disconnecting circuit structure according to claim 1, which is characterized in that work as charging valve
When managing chip connection adapter, the second end of pull down resistor is connected to adapter feeder ear by first resistor, passes through the second electricity
Resistance ground connection；NMOS transistor conduction, PMOS tube grid drag down, and electric control chip obtains electric in PMOS tube conducting, and DIS signal is raised.
3. a kind of laptop circuit Self-disconnecting circuit structure according to claim 1 or 2, which is characterized in that when filling
When electric managing chip only connects lithium battery, starting key is operated, and the operation signal is sent to upper electric control chip, it is upper automatically controlled
Coremaking piece drags down DIS signal, and NMOS tube disconnects, and the grid of PMOS tube is drawn high, and PMOS tube disconnects, upper electric control powering down chips.
4. a kind of laptop circuit Self-disconnecting circuit structure according to claim 3, which is characterized in that operation booting
The concrete operations of key are that long-pressing starting key is no more than 1 second.
The electric control method 5. a kind of laptop circuit is autotomyed, comprising the following steps:
S1: determining the power supply of charging management chip, if the power supply of charging management chip is powered containing adapter, turns
To step S2, if the power supply of charging management chip only has lithium battery, step S3 is gone to；
S2: power-off control circuit conducting, upper electric control chip power on；And go to step S1；
S3: power-off control circuit disconnects, upper electric control powering down chips；And go to step S1.
The electric control method 6. a kind of laptop circuit according to claim 5 is autotomyed, which is characterized in that the step
In S2, charging management chip connects adapter, and the second end of pull down resistor is connected to adapter feeder ear by first resistor, leads to
Cross second resistance ground connection；NMOS transistor conduction, PMOS tube grid drag down, and PMOS tube is connected upper electric control chip and obtains electric, DIS signal quilt
It draws high.
The electric control method 7. a kind of laptop circuit according to claim 5 or 6 is autotomyed, which is characterized in that described
In step S3, charging management chip only connects lithium battery, operates starting key, and the operation signal is sent to upper electric control core
Piece, upper electric control chip drag down DIS signal, and NMOS tube disconnects, and the grid of PMOS tube is drawn high, and PMOS tube disconnects, upper electric control
Powering down chips.
The electric control method 8. a kind of laptop circuit according to claim 7 is autotomyed, which is characterized in that operation booting
The concrete operations of key are that long-pressing starting key is no more than 1 second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810592858.XA CN108988300B (en) | 2018-06-11 | 2018-06-11 | Self-power-off circuit structure of notebook power circuit and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810592858.XA CN108988300B (en) | 2018-06-11 | 2018-06-11 | Self-power-off circuit structure of notebook power circuit and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108988300A true CN108988300A (en) | 2018-12-11 |
| CN108988300B CN108988300B (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810592858.XA Active CN108988300B (en) | 2018-06-11 | 2018-06-11 | Self-power-off circuit structure of notebook power circuit and control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112527133A (en) * | 2020-12-02 | 2021-03-19 | 维沃移动通信有限公司 | Touch control pen |
| CN112925386A (en) * | 2021-03-01 | 2021-06-08 | 西安超越申泰信息科技有限公司 | Equipment power supply system, power supply method and notebook computer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103105921A (en) * | 2013-01-30 | 2013-05-15 | 山东超越数控电子有限公司 | Method for reducing lithium battery static power consumption under laptop shutdown state |
| CN104702258A (en) * | 2015-03-23 | 2015-06-10 | 曲保章 | Power-up starting power switch with controllable function |
| CN105811502A (en) * | 2016-03-22 | 2016-07-27 | 深圳天邦达科技有限公司 | OZ8952 chip based improved type lithium battery pack management circuit |
| CN106505720A (en) * | 2016-11-15 | 2017-03-15 | 深圳天珑无线科技有限公司 | A kind of on-off circuit and terminal unit for solving shutdown electric leakage |
-
2018
- 2018-06-11 CN CN201810592858.XA patent/CN108988300B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105921A (en) * | 2013-01-30 | 2013-05-15 | 山东超越数控电子有限公司 | Method for reducing lithium battery static power consumption under laptop shutdown state |
| CN104702258A (en) * | 2015-03-23 | 2015-06-10 | 曲保章 | Power-up starting power switch with controllable function |
| CN105811502A (en) * | 2016-03-22 | 2016-07-27 | 深圳天邦达科技有限公司 | OZ8952 chip based improved type lithium battery pack management circuit |
| CN106505720A (en) * | 2016-11-15 | 2017-03-15 | 深圳天珑无线科技有限公司 | A kind of on-off circuit and terminal unit for solving shutdown electric leakage |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112527133A (en) * | 2020-12-02 | 2021-03-19 | 维沃移动通信有限公司 | Touch control pen |
| CN112925386A (en) * | 2021-03-01 | 2021-06-08 | 西安超越申泰信息科技有限公司 | Equipment power supply system, power supply method and notebook computer |
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| Publication number | Publication date |
|---|---|
| CN108988300B (en) | 2020-04-03 |
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