CN102200826A - Power adapter and portable computer - Google Patents
Power adapter and portable computer Download PDFInfo
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- CN102200826A CN102200826A CN2010101343763A CN201010134376A CN102200826A CN 102200826 A CN102200826 A CN 102200826A CN 2010101343763 A CN2010101343763 A CN 2010101343763A CN 201010134376 A CN201010134376 A CN 201010134376A CN 102200826 A CN102200826 A CN 102200826A
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Abstract
The invention provides a power adapter and a portable computer. The power adapter comprises a pulse width modulation unit and an output shaping unit, and also comprises a first acquisition module, a first judgment module and a first control module, wherein the first acquisition module is used for acquiring a state judgment parameter of the portable computer and the output voltage of the output shaping unit; the first judgment module is used for judging whether the portable computer is in a first state according to the state judgment parameter, and judging the magnitude of the output voltage and a first preset voltage threshold and a second preset voltage threshold to acquire a judgment result when the portable computer is judged to be in the first state; the first preset voltage threshold is more than or equal to the second preset voltage threshold; and the first control module is used for controlling the pulse width modulation unit to be in an off state when the judgment result shows that the output voltage is greater than the first preset voltage threshold, and controlling the pulse width modulation unit to be in a working state when the output voltage is smaller than the second preset voltage threshold. The efficiency of the adapter is improved.
Description
Technical field
The present invention relates to the power supply technique of electronic equipment, particularly a kind of power supply adaptor and portable computer.
Background technology
In recent years along with energy-conservation standards such as " Energy Star " constantly occurs and upgrading, and the global Energy Star plan that has seven countries and regions to participate in Environmental Protection Agencies' promotion, be respectively the U.S., Canada, Japan, TaiWan, China, Australia, New Zealand, European Union.
And electronic equipment is energy-conservation by global consumer's cognition, accepts and as the necessary condition of selecting product.
Current, power supply status comprises several states of S0, S1, S2, S3, S4 and S5, is described as follows.
S0, common duty, all devices standard-sized sheet.
S1, expression system are in low power supply supply status, and CPU closes, and other equipment operate as normal can be waken computing machine up by mouse, keyboard etc.;
S2, the power supply armed state is that with the difference of S1 bus clock also is closed.
S3, current to exist all data in the internal memory to preserve motionless operating system, enters " false shutdown " state then, and keep data except internal memory needs power supply this moment, and other unit is all stopped power supply.
S4, depositing in the hard disk of the data integrity in the operating system memory, all parts quit work.
S5, off-mode, all devices Close All.
S1 increased successively to the time that S5 wakes computing machine up.
In the existing adapters, all comprise a pwm unit and an output Shaping unit, wherein, include energy-storage travelling wave tubes such as electric capacity, inductance in this output Shaping unit, in the adapter course of work, these energy-storage travelling wave tubes can store certain energy, and these energy are not fully utilized and supply, and cause adapter efficient lower.
Summary of the invention
The purpose of this invention is to provide a kind of power supply adaptor and portable computer, improve the efficient of adapter.
To achieve these goals, the embodiment of the invention provides a kind of power supply adaptor, is used to the portable computer power supply, comprises that original state is the pwm unit and the output Shaping unit of duty, and described power supply adaptor also comprises:
First acquisition module is used to obtain the state judgement parameter of described portable computer and the output voltage of output Shaping unit;
First judge module, be used for judging that according to state parameter judges whether described portable computer is in first state, and when judging described portable computer and be in first state, judge the size of described output voltage and the first predeterminated voltage thresholding and the second predeterminated voltage thresholding, obtain a judged result; The described first predeterminated voltage thresholding is more than or equal to the described second predeterminated voltage thresholding;
First control module, be used for when described judged result shows described output voltage greater than the described first predeterminated voltage thresholding, control described pwm unit and be in closed condition, and when described judged result showed described output voltage less than the described second predeterminated voltage thresholding, it was in running order to control described pwm unit.
Above-mentioned power supply adaptor, wherein, when described portable computer inside comprised rechargable power supplies, described power supply adaptor also comprised:
Second acquisition module is used for described portable computer alternately, obtains a battery status and judges parameter;
Second control module is used for closing described first control module, otherwise opening described first control module when judging that according to described battery status parameter is judged rechargable power supplies and is in charged state.
Above-mentioned power supply adaptor, wherein, described state judges that parameter is:
The state of portable computer; Or
The current power consumption of portable computer; Or
The current power consumption of portable computer and duration.
Above-mentioned power supply adaptor, wherein, described state judges that described first judge module specifically comprised when parameter was the current power consumption of described portable computer:
First module is used for the magnitude relationship of the more described current power consumption and first thresholding;
Unit second is used in described current power consumption during less than first thresholding, and the current state of judging described portable computer is described first state;
Described first thresholding be described portable computer under first state maximum power dissipation or a maximum power dissipation and a fault-tolerant thresholding and.
Above-mentioned power supply adaptor, wherein, described state judges that parameter is the current power consumption and the duration of portable computer, described first judge module specifically comprises:
First module is used for the magnitude relationship of the more described current power consumption and first thresholding;
Unit the 3rd is used in described current power consumption less than first thresholding, and duration when surpassing the second default duration, and the current state of judging described portable computer is described first state;
Described first thresholding be described portable computer under first state maximum power dissipation or a maximum power dissipation and a fault-tolerant thresholding and.
Above-mentioned power supply adaptor, wherein, described power supply adaptor also comprises:
Resistive element is arranged on the output channel of described output Shaping unit;
Described first acquisition module specifically comprises:
Current measuring element is used to detect the electric current of described resistive element;
Voltage detector component is used to detect the output voltage of described output Shaping unit;
The current power consumption of described portable computer is the product of the output voltage of the electric current of described resistive element and described output Shaping unit.
Above-mentioned power supply adaptor, wherein, also be provided with a switch that is initially in closure state on the described power supply adaptor, described first control module is connected with described switch, specifically be used for disconnecting or conducting, corresponding being in of described pwm unit closed or duty by controlling described switch.
Above-mentioned power supply adaptor, wherein, described power supply adaptor also comprises:
The time detecting module when being used for described first judge module and judging that according to state parameter judges that described portable computer is in first state, is detected the duration of described portable computer at described first state;
The 3rd control module is used at described portable computer controlling described first control module and closing when duration of described first state surpasses default duration, controls described switch and disconnects.
Above-mentioned power supply adaptor, wherein, described power supply adaptor also comprises:
Notification module is used at described portable computer sending out code to described portable computer when duration of described first state surpasses default duration, makes described portable computer shutdown.
To achieve these goals, the embodiment of the invention provides a kind of portable computer, comprising:
The 3rd acquisition module is used to the output voltage that the state that obtains is judged parameter and power supply adaptor;
Second judge module, be used for judging that according to state parameter judges whether described portable computer is in first state, and when judging described portable computer and be in first state, judge the size of described output voltage and the first predeterminated voltage thresholding and the second predeterminated voltage thresholding, obtain a judged result; The described first predeterminated voltage thresholding is more than or equal to the described second predeterminated voltage thresholding;
The 4th control module, be used for when described judged result shows described output voltage greater than the described first predeterminated voltage thresholding, send first steering order to power supply adaptor, make the pwm unit in the described power supply adaptor be in closed condition, and when described judged result shows described output voltage less than the described second predeterminated voltage thresholding, send second steering order to power supply adaptor, make the pwm unit in the described power supply adaptor in running order.
To achieve these goals, the embodiment of the invention provides a kind of power supply adaptor, comprises pwm unit and output Shaping unit, and described power supply adaptor also comprises:
The command reception module, be used to receive first steering order or second steering order that portable computer sends, described first steering order is that described portable computer is being in first state, and the instruction that the output voltage of output Shaping unit sends during greater than the described first predeterminated voltage thresholding, described second steering order is that described portable computer is being in first state, and the instruction that sends during less than the described second predeterminated voltage thresholding of the output voltage of power supply adaptor; The described first predeterminated voltage thresholding is more than or equal to the described second predeterminated voltage thresholding;
The 5th control module, control described pwm unit when being used for receiving described first steering order and be in closed condition, control described pwm unit when receiving described second steering order in described command reception unit and be in opening in described command reception unit.
Above-mentioned power supply adaptor, wherein, also be provided with a switch that is initially in closure state in the described power supply adaptor, described first control module is connected with described switch, be used for disconnecting or conducting, corresponding being in of described pwm unit closed or duty by controlling described switch.
The embodiment of the invention has following beneficial effect:
In the power supply adaptor and portable computer of the embodiment of the invention, when described portable computer is in the lower state of energy consumption, if the output voltage of power supply adaptor is during greater than the first predeterminated voltage thresholding, control described pwm unit and be in closed condition, energy by the storage of the energy-storage travelling wave tube utilization in the output Shaping unit is the portable computer power supply, and at output voltage during less than the second predeterminated voltage thresholding, it is in running order to control described pwm unit, by adapter is the portable computer power supply, and be the energy-storage travelling wave tube power supply, so that next round utilizes the energy of energy-storage travelling wave tube utilization storage to power for portable computer.Therefore, when system used the excess energy work of energy-storage travelling wave tube storage, the switching device in the PWM module of adapter all was in off state, and the off state time is long more, and the energy of consumption is few more.And the energy consumption of switching device accounts for the very most of of whole adapter energy consumption under the underloading situation, and therefore, the embodiment of the invention can significantly reduce the loss of the switching device in the PWM module of adapter under the underloading situation, has improved the efficient of adapter.
Description of drawings
Fig. 1 is the structural representation of the power supply adaptor of the embodiment of the invention;
Fig. 2 is the detailed structure synoptic diagram of the power supply adaptor of the embodiment of the invention;
Fig. 3 is the detailed structure synoptic diagram of power supply adaptor when adapter end is realized consumption detection of the embodiment of the invention.
Embodiment
In specific embodiments of the invention, the energy that utilizes the energy-storage travelling wave tube in the output Shaping unit to store in course of normal operation provides the electric power support for portable computer, to improve the efficient of adapter.
As shown in Figure 1, the power supply adaptor of the embodiment of the invention is used to the portable computer power supply, comprises that original state is the pwm unit and the output Shaping unit of duty, described pwm unit is connected with the output Shaping unit by converting unit, and described power supply adaptor also comprises:
First acquisition module is used to obtain the state judgement parameter of described portable computer and the output voltage of output Shaping unit;
First judge module, be used for judging that according to state parameter judges whether described portable computer is in first state, and when judging described portable computer and be in first state, judge the size of described output voltage and the first predeterminated voltage thresholding and the second predeterminated voltage thresholding, obtain a judged result; The described first predeterminated voltage thresholding is greater than the described second predeterminated voltage thresholding;
First control module, be used for when described judged result shows described output voltage greater than the described first predeterminated voltage thresholding, control described pwm unit and be in closed condition, and when described judged result showed described output voltage less than the described second predeterminated voltage thresholding, it was in running order to control described pwm unit.
The described first predeterminated voltage thresholding and the second predeterminated voltage thresholding can be provided with as required, guarantee that the first predeterminated voltage thresholding gets final product more than or equal to the second predeterminated voltage thresholding.
Certainly, when the first predeterminated voltage thresholding and the second predeterminated voltage thresholding do not wait, when described output voltage was between described first predeterminated voltage thresholding and the described second predeterminated voltage thresholding, the state that described first control module also is used to keep described pwm unit was constant.
Certainly, consider the situation of the energy-storage travelling wave tube in the output Shaping unit of the power consumption ability of existing portable computer and adapter, generally speaking, this first state should be selected the less state of power consumption, as S3, S4 and S5 state, under these states, power consumption is few, can be supported its work certain hour by the energy-storage travelling wave tube in the output Shaping unit.
Simultaneously, along with the continuous progress of device fabrication, the power consumption of portable computer is fewer and feweri, and perhaps the storage capacity of energy-storage travelling wave tube is increasing, and this state also can change, and as selection S1, S2 state, even S0 also can.
Certainly, in specific embodiments of the invention, consider that the portable computer major part all uses rechargeable battery, and rechargeable battery is in when charging, and the voltage that needs power supply adaptor to provide is the voltage of portable computer when working in the S0 pattern, in this case, even portable computer works in low power consumpting state (as states such as S4, S5), also should under the circumstances, also comprise in the power supply adaptor of the embodiment of the invention by the adapter normal power supply:
Second acquisition module is used for described portable computer alternately, obtains a battery status and judges parameter;
Second control module is used for closing described first control module when judging that according to described battery status parameter is judged rechargable power supplies and is in charged state, otherwise described first control module of working.
Can find that from above-mentioned description power supply adaptor need obtain two-part parameter:
State is judged parameter; With
The output voltage of output Shaping unit.
For the output voltage of output Shaping unit, this is fairly simple, directly can realize by voltage detector component.
And for state judgement parameter, in specific embodiments of the invention, can realize in several ways, judge that as state parameter can be following parameter:
The state parameter of portable computer; Or
The current power consumption of portable computer; Or
The current power consumption of portable computer and duration.
Be described in detail respectively below.
＜implementation one 〉
In the implementation one, this state judges that parameter is the state parameter of portable computer, and this state judgement parameter is directly obtained from the portable computer end and got final product.
In implementation one, owing to directly obtain the state parameter of portable computer from the portable computer end, therefore need be when power supply adaptor and portable computer need carry out the transmission of state parameter, therefore need increase the corresponding PIN that is used for data transmission that is provided with and carry out the transmission of state parameter at power supply adaptor and portable computer end.
Concrete which kind of communication mode that adopts does not limit in specific embodiments of the invention, anyly can communicate the transmission that mode may be used to state parameter between external equipment and portable computer, is not described in detail at this.
＜implementation two 〉
Directly when portable computer obtains state parameter, consider that the electromagnetic interference (EMI) of power supply adaptor itself is bigger, data may be made mistakes in the transmission receiving course, and in implementation two, this state judges that parameter is the current power consumption of portable computer.
In conjunction with the description in the background technology can, in the S0-S5 state of portable computer, under every kind of state, the equipment difference of closing, as S0, equipment is all worked, S1, CPU closes, S3 has only internal memory work, S4 and S5, equipment Close All.
Because the equipment difference of work, it is also inevitable different then to keep the needed energy consumption of these equipment works, therefore, in implementation two, directly obtain the current power consumption of portable computer, and judge its residing state, be elaborated below according to its current power consumption.
Comprise that with first state S3, S4 and S5 state are example the course of work of power supply adaptor is described in detail below.
Set in advance two following thresholdings:
A1, S3, S4 and S5 state, the maximal value of the power consumption of portable computer.
When being single state for first state, A1 is the power consumption of portable computer under this single status.
Obtain current power consumption A from portable computer then, and the magnitude relationship of judgement and A1, generally,, comprise following several relations this moment no matter which kind of state portable computer is in:
A is greater than A1; Perhaps
A is less than A1.
Because A1 is S3, S4 and S5 state, the maximal value of the power consumption of portable computer is not S3 or S4 or S5 state if A, then shows the current state of portable computer greater than A1, is S3, S4 or S5 state otherwise show that portable computer is current.
Certainly, consider that portable computer used after a period of time, because device aging, power consumption can increase, and therefore, can also adopt following judgment mode.
Judge and the magnitude relationship of A1+ Δ, generally,, comprise following several relations this moment no matter which kind of state portable computer is in:
A is greater than the A1+ Δ; Perhaps
A is less than the A1+ Δ.
Because A1 is S3, S4 and S5 state, the maximal value of the power consumption of portable computer is not S3 or S4 or S5 state if A, then shows the current state of portable computer greater than the A1+ Δ; Otherwise show that portable computer is current for S3, S4 or S5 state.
In specific embodiments of the invention, can obtain the current power consumption of portable computer in the following way, be described as follows.
Also comprise a resistive element in this power supply adaptor, be arranged on the output channel of described output Shaping unit;
Described first acquisition module specifically comprises:
Current measuring element is used to detect the electric current of described resistive element;
Voltage detector component is used to detect the output voltage of described output Shaping unit;
The current power consumption of described portable computer is the product of the output voltage of the electric current of described resistive element and described output Shaping unit.
Certainly, because the direct-flow input end of portable computer all is in series with resistance, also can carry out the detection of electric current and voltage by this resistance, and utilize detected electric current and voltage to calculate the current power consumption of portable computer, by data channel, pass to power supply adaptor by portable computer and get final product then.
＜implementation three 〉
In implementation one, directly obtain state parameter from portable computer, but the electromagnetic interference (EMI) of considering power supply adaptor itself is bigger, data may be made mistakes in the transmission receiving course, in implementation two, judge with the current power consumption of portable computer, the power consumption saltus step problem that extraneous factor produces but it does not consider portable computer, therefore, in implementation three, this state judges that parameter is the current power consumption and the duration of portable computer.
In conjunction with the description in the background technology can, in the S0-S5 state of portable computer, under every kind of state, the equipment difference of closing, as S0, equipment is all worked, S1, CPU closes, S3 has only internal memory work, S4 and S5, equipment Close All.
Because the equipment difference of work, it is also inevitable different then to keep the needed energy consumption of these equipment works, therefore, in implementation three, directly obtain its current power consumption, and judge its residing state, be elaborated below according to its current power consumption and duration from portable computer.
Set in advance two following thresholdings:
A1, S3, S4 and S5 state, the maximal value of the power consumption of portable computer.
Obtain current power consumption A from portable computer then, and the magnitude relationship of judgement and A1, generally,, comprise following several relations this moment no matter which kind of state portable computer is in:
A is greater than A1, and the duration is above T1; Perhaps
A is less than A1, and the duration is above T2.
Because A1 is S3, S4 and S5 state, the maximal value of the power consumption of portable computer is not S3 or S4 or S5 state if A, then shows the current state of portable computer greater than A1, is S3, S4 or S5 state otherwise show that portable computer is current.
For implementation two, added the factor of duration, the power consumption saltus step that can avoid portable computer to produce owing to extraneous factor causes the problem of error in judgement.
Certainly, based on same reason, consider that portable computer used after a period of time, because device aging, power consumption can increase, and therefore, can also adopt following judgment mode.
Judge and the magnitude relationship of A1+ Δ (fault-tolerant thresholding), generally,, comprise following several relations this moment no matter which kind of state portable computer is in:
A is greater than the A1+ Δ, and the duration is above T1; Perhaps
A is less than the A1+ Δ, and the duration is above T2.
Certainly, this T1 can be provided with identical time value with T2, also can be different.
In specific embodiments of the invention, can obtain the current power consumption of portable computer in the following way, be described as follows.
Also comprise a resistive element in this power supply adaptor, be arranged on the output channel of described output Shaping unit;
Described first acquisition module specifically comprises:
Current measuring element is used to detect the electric current of described resistive element;
Voltage detector component is used to detect the output voltage of described output Shaping unit;
The current power consumption of described portable computer is the product of the output voltage of the electric current of described resistive element and described output Shaping unit.
In specific embodiments of the invention, first control module need be controlled described pwm unit and be in closed condition or duty, and it can be accomplished in several ways, and is respectively described below.
＜mode one 〉
Direct control mode.
In implementation one, the work that this first control module is directly controlled pwm unit whether.
＜mode two 〉
The path control mode.
In implementation two, whether the work of controlling pwm unit indirectly by the electric loop of control pwm unit be described as follows.
One switch that is initially in closure state is set, and described first control module is connected with described switch, and described first control module is used for disconnecting or conducting by controlling described switch, and corresponding being in of described pwm unit closed or duty.
Generally, power supply adaptor comprises:
The city's plug that is linked in sequence, anti-electromagnetic interference (EMI) filter unit, input shaper unit, converting unit and output Shaping unit, simultaneously, the input shaper unit also is connected to converting unit by start-up circuit and pwm unit, and pwm unit is connected with the output terminal and the reference voltage control module of output Shaping unit by light lotus root unit.
As shown in Figure 2, be possible position of the switch synoptic diagram, this switch can be arranged at the optional position shown in the frame of broken lines of Fig. 2, certainly, can also be other positions, does not illustrate one by one among the figure.
Can find by Fig. 2, no matter switch is in which position among Fig. 2, as long as switch disconnects, pwm unit or can't obtain correct input signal then perhaps can't output signal, therefore can't operate as normal, the corresponding closed condition that is in, in case and switch conduction, then the adapter with common is identical, pwm unit is in opening.
Can find from Fig. 2, wherein be provided with light lotus root unit, its effect is to isolate primary side and out secondary, breaks off potential safety hazard.
As shown in Figure 3, a kind of concrete structure synoptic diagram for the adapter of the embodiment of the invention, wherein adapter passes through in the output terminal resistance in series, and first acquisition module is by detecting the current output voltage of electric current and output Shaping unit of resistance, and the two multiplies each other and obtains the current power consumption of portable computer;
And simultaneously, first judge module is by relatively a current power consumption and a power consumption thresholding are judged notebook present located state, when finding that portable computer is in first state, further judge the size of described output voltage and the first predeterminated voltage thresholding and the second predeterminated voltage thresholding, obtain a judged result; The described first predeterminated voltage thresholding is greater than the described second predeterminated voltage thresholding;
And by first control module when described judged result shows described output voltage greater than the described first predeterminated voltage thresholding, control described switch and be in off-state, and when described judged result shows described output voltage less than the described second predeterminated voltage thresholding, control described switch and be in conducting state.
If portable computer is kept a very long time in this state, show the user a very long time do not use portable computer, at this moment, for conservation of power, should close portable computer and close adapter, therefore, described power supply adaptor can also comprise:
The time detecting module when being used for described first judge module and judging that according to state parameter judges that described portable computer is in first state, is detected the duration of described portable computer at described first state;
The 3rd control module is used at described portable computer controlling described first control module and closing when duration of described first state surpasses default duration, and controls described switch and disconnect.
At this moment, first control module can not had an effect again, and because switch disconnects, power supply adaptor no longer is the portable computer power supply to make the user when not using computer for a long time, no longer unnecessary consumption electric power.
Certainly, consider data security, described power supply adaptor can also comprise:
Notification module is used at described portable computer sending out code to described portable computer when duration of described first state surpasses default duration, makes described portable computer shutdown.
Certainly, this notification module can not be provided with yet, and is made an appointment by adapter and computer end, as portable computer as described in duration of first state when surpassing default duration, both sides' synchronous working, portable computer shuts down after preserving data, and the adapter cut-off switch.
As previously mentioned, behind the adapter cut-off switch, the energy of storing in the output Shaping unit can also support the of short duration time of working with notebook computer, is enough to support portable computer to finish shutdown process.
The course of work to adapter shown in Figure 3 is described in detail below.
Portable computer is in running order down, first acquisition module is according to the electric current and the voltage that obtain, first judge module obtains the current power consumption of portable computer, judge and find that portable computer is not to be in the S3 state, therefore can further not judge the magnitude relationship of current output voltage and predeterminated voltage thresholding, also just can not trigger first control module, switch is in closure state simultaneously, at this moment, adapter is with adapter is identical usually.
Suppose that the user leaves computer a period of time, notebook computer enters holding state, first acquisition module is according to the electric current and the voltage that obtain, after first judge module obtains the current power consumption of portable computer, discovery is lower than a power consumption thresholding, then judge and find that portable computer is not to be in the S3 state, then further judge the size of output voltage and the first predeterminated voltage thresholding and the second predeterminated voltage thresholding of shaping output unit, obtain a judged result;
Because before, the shaping output unit is in common duty, so output voltage is higher, and therefore, judged result can indicate output voltage greater than the first predeterminated voltage thresholding, and at this moment, first control module can gauge tap disconnect.
After switch disconnects, energy-storage travelling wave tube in the shaping output unit is the portable computer power supply by the energy that discharges storage, continuous consumption along with energy, output voltage constantly reduces, be reduced to after the second predeterminated voltage thresholding, then first judge module can be judged output voltage less than the second predeterminated voltage thresholding, and at this moment, first control module can the gauge tap conducting.
Behind the switch conduction, the power supply of adapter normal mode, in very short time, output voltage can be brought up to or surpass the first predeterminated voltage thresholding, and the while energy-storage travelling wave tube has also been finished the storage of energy, because output voltage is brought up to or surpass the first predeterminated voltage thresholding, judged result can indicate output voltage greater than the first predeterminated voltage thresholding, at this moment, first control module can gauge tap disconnect.
After switch disconnects, be again that energy-storage travelling wave tube is the portable computer power supply by the energy that discharges storage, voltage descends, and after voltage dropped to a certain degree, first control module can the gauge tap conducting.
So move in circles, realized effective utilization of the energy in the energy-storage travelling wave tube, improved the efficient of adapter.
After portable computer enters duty from the S3 state, first acquisition module is according to the electric current and the voltage that obtain, first judge module obtains the current power consumption of portable computer, judge and find that portable computer is not when being in the S3 state, conducting that then can maintained switch, and can not trigger first control module.
Certainly, above-mentioned is to be the explanation that example is carried out with duty and S3 state, suitable equally for other states, in this explanation for example that differs.
Above-mentioned is the explanation of carrying out with judge at adapter end, control etc., but should be understood that the embodiment of the invention also can be brought in realization at portable computer.
The portable computer of the embodiment of the invention comprises:
The 3rd acquisition module is used to obtain the state judgement parameter of described portable computer and the output voltage of power supply adaptor;
Second judge module, be used for judging that according to state parameter judges whether described portable computer is in first state, and when judging described portable computer and be in first state, judge the size of described output voltage and the first predeterminated voltage thresholding and the second predeterminated voltage thresholding, obtain a judged result; The described first predeterminated voltage thresholding is more than or equal to the described second predeterminated voltage thresholding;
The 4th control module, be used for when described judged result shows described output voltage greater than the described first predeterminated voltage thresholding, send first steering order to power supply adaptor, make the pwm unit in the described power supply adaptor be in closed condition, and when described judged result shows described output voltage less than the described second predeterminated voltage thresholding, send second steering order to power supply adaptor, make the pwm unit in the described power supply adaptor in running order.
The input voltage that the output voltage of this power supply adaptor can directly be measured the adaptor interface of portable computer can obtain.
The another kind of power supply adaptor of the embodiment of the invention is used to the portable computer power supply, comprises that original state is the pwm unit and the output Shaping unit of duty, and described power supply adaptor also comprises:
The command reception module, be used to receive first steering order or second steering order that portable computer sends, described first steering order is that described portable computer is being in first state, and the instruction that the output voltage of output Shaping unit sends during greater than the described first predeterminated voltage thresholding, described second steering order is that described portable computer is being in first state, and the instruction that sends during less than the described second predeterminated voltage thresholding of the output voltage of power supply adaptor; The described first predeterminated voltage thresholding is more than or equal to the described second predeterminated voltage thresholding;
The 5th control module, control described pwm unit when being used for receiving described first steering order and be in closed condition, control described pwm unit when receiving described second steering order in described command reception unit and be in opening in described command reception unit.
One switch that is initially in closure state can be set in this adapter, described first control module is connected with described switch, described first control module is used for disconnecting or conducting by controlling described switch, and corresponding being in of described pwm unit closed or duty.
Have been described in detail before the setting of this switch, do not repeat them here.
During adapter work, switching device wherein (mainly being the switching device in the PWM module) will be in catabiotic state, when computer is in light condition, the shared proportion of the energy that switching device consumed in the energy of portable computer consumption and the little this moment adapter is very big, and in the power supply adaptor and portable computer of the embodiment of the invention, when described portable computer is in the lower state of energy consumption, if the output voltage of power supply adaptor is during greater than the first predeterminated voltage thresholding, control described pwm unit and be in closed condition, energy by the storage of the energy-storage travelling wave tube utilization in the output Shaping unit is the portable computer power supply, and at output voltage during less than the second predeterminated voltage thresholding, it is in running order to control described pwm unit, by adapter is the portable computer power supply, and be the energy-storage travelling wave tube power supply, so that next round utilizes the energy of energy-storage travelling wave tube utilization storage to power for portable computer.Therefore, when system used the excess energy work of energy-storage travelling wave tube storage, the switching device in the PWM module of adapter all was in off state, and the off state time is long more, and the energy of consumption is few more.And the energy consumption of switching device accounts for the very most of of whole adapter energy consumption under the underloading situation, and therefore, the embodiment of the invention can significantly reduce the loss of the switching device in the PWM module of adapter under the underloading situation, has improved the efficient of adapter.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (12)
1. a power supply adaptor is used to the portable computer power supply, comprises that original state is the pwm unit and the output Shaping unit of duty, is characterized in that described power supply adaptor also comprises:
First acquisition module is used to obtain the state judgement parameter of described portable computer and the output voltage of output Shaping unit;
First judge module, be used for judging that according to state parameter judges whether described portable computer is in first state, and when judging described portable computer and be in first state, judge the size of described output voltage and the first predeterminated voltage thresholding and the second predeterminated voltage thresholding, obtain a judged result; The described first predeterminated voltage thresholding is more than or equal to the described second predeterminated voltage thresholding;
First control module, be used for when described judged result shows described output voltage greater than the described first predeterminated voltage thresholding, control described pwm unit and be in closed condition, and when described judged result showed described output voltage less than the described second predeterminated voltage thresholding, it was in running order to control described pwm unit.
2. power supply adaptor according to claim 1 is characterized in that, when described portable computer inside comprised rechargable power supplies, described power supply adaptor also comprised:
Second acquisition module is used for described portable computer alternately, obtains a battery status and judges parameter;
Second control module is used for closing described first control module, otherwise opening described first control module when judging that according to described battery status parameter is judged rechargable power supplies and is in charged state.
3. power supply adaptor according to claim 1 is characterized in that, described state judges that parameter is:
The state of portable computer; Or
The current power consumption of portable computer; Or
The current power consumption of portable computer and duration.
4. power supply adaptor according to claim 3 is characterized in that, described state judges that described first judge module specifically comprised when parameter was the current power consumption of described portable computer:
First module is used for the magnitude relationship of the more described current power consumption and first thresholding;
Unit second is used in described current power consumption during less than first thresholding, and the current state of judging described portable computer is described first state;
Described first thresholding be described portable computer under first state maximum power dissipation or a maximum power dissipation and a fault-tolerant thresholding and.
5. power supply adaptor according to claim 3 is characterized in that, described state judges that parameter is the current power consumption and the duration of portable computer, and described first judge module specifically comprises:
First module is used for the magnitude relationship of the more described current power consumption and first thresholding;
Unit the 3rd is used in described current power consumption less than first thresholding, and duration when surpassing the second default duration, and the current state of judging described portable computer is described first state;
Described first thresholding be described portable computer under first state maximum power dissipation or a maximum power dissipation and a fault-tolerant thresholding and.
6. according to claim 4 or 5 described power supply adaptors, it is characterized in that described power supply adaptor also comprises:
Resistive element is arranged on the output channel of described output Shaping unit;
Described first acquisition module specifically comprises:
Current measuring element is used to detect the electric current of described resistive element;
Voltage detector component is used to detect the output voltage of described output Shaping unit;
The current power consumption of described portable computer is the product of the output voltage of the electric current of described resistive element and described output Shaping unit.
7. power supply adaptor according to claim 1, it is characterized in that, also be provided with a switch that is initially in closure state on the described power supply adaptor, described first control module is connected with described switch, specifically be used for disconnecting or conducting, corresponding being in of described pwm unit closed or duty by controlling described switch.
8. power supply adaptor according to claim 7 is characterized in that, described power supply adaptor also comprises:
The time detecting module when being used for described first judge module and judging that according to state parameter judges that described portable computer is in first state, is detected the duration of described portable computer at described first state;
The 3rd control module is used at described portable computer controlling described first control module and closing when duration of described first state surpasses default duration, controls described switch and disconnects.
9. power supply adaptor according to claim 8 is characterized in that, described power supply adaptor also comprises:
Notification module is used at described portable computer sending out code to described portable computer when duration of described first state surpasses default duration, makes described portable computer shutdown.
10. a portable computer is characterized in that, comprising:
The 3rd acquisition module is used to the output voltage that the state that obtains is judged parameter and power supply adaptor;
Second judge module, be used for judging that according to state parameter judges whether described portable computer is in first state, and when judging described portable computer and be in first state, judge the size of described output voltage and the first predeterminated voltage thresholding and the second predeterminated voltage thresholding, obtain a judged result; The described first predeterminated voltage thresholding is more than or equal to the described second predeterminated voltage thresholding;
The 4th control module, be used for when described judged result shows described output voltage greater than the described first predeterminated voltage thresholding, send first steering order to power supply adaptor, make the pwm unit in the described power supply adaptor be in closed condition, and when described judged result shows described output voltage less than the described second predeterminated voltage thresholding, send second steering order to power supply adaptor, make the pwm unit in the described power supply adaptor in running order.
11. a power supply adaptor comprises pwm unit and output Shaping unit, it is characterized in that described power supply adaptor also comprises:
The command reception module, be used to receive first steering order or second steering order that portable computer sends, described first steering order is that described portable computer is being in first state, and the instruction that the output voltage of output Shaping unit sends during greater than the described first predeterminated voltage thresholding, described second steering order is that described portable computer is being in first state, and the instruction that sends during less than the described second predeterminated voltage thresholding of the output voltage of power supply adaptor; The described first predeterminated voltage thresholding is more than or equal to the described second predeterminated voltage thresholding;
The 5th control module, control described pwm unit when being used for receiving described first steering order and be in closed condition, control described pwm unit when receiving described second steering order in described command reception unit and be in opening in described command reception unit.
12. power supply adaptor according to claim 11, it is characterized in that, also be provided with a switch that is initially in closure state in the described power supply adaptor, described first control module is connected with described switch, be used for disconnecting or conducting, corresponding being in of described pwm unit closed or duty by controlling described switch.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010134376.3A CN102200826B (en) | 2010-03-25 | 2010-03-25 | Power adapter and portable computer |
| US13/578,649 US9236766B2 (en) | 2010-02-11 | 2011-01-28 | Control of a power adapter with energy storage elements based on output voltage thresholds |
| PCT/CN2011/070757 WO2011098000A1 (en) | 2010-02-11 | 2011-01-28 | Power adapter and portable computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010134376.3A CN102200826B (en) | 2010-03-25 | 2010-03-25 | Power adapter and portable computer |
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| Publication Number | Publication Date |
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| CN102200826A true CN102200826A (en) | 2011-09-28 |
| CN102200826B CN102200826B (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010134376.3A Active CN102200826B (en) | 2010-02-11 | 2010-03-25 | Power adapter and portable computer |
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| CN110456147A (en) * | 2019-08-29 | 2019-11-15 | 无锡睿勤科技有限公司 | A kind of wattage information acquisition method, device and the electronic equipment of power supply adaptor |
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