CN102200826B - Power adapter and portable computer - Google Patents
Power adapter and portable computer Download PDFInfo
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- CN102200826B CN102200826B CN201010134376.3A CN201010134376A CN102200826B CN 102200826 B CN102200826 B CN 102200826B CN 201010134376 A CN201010134376 A CN 201010134376A CN 102200826 B CN102200826 B CN 102200826B
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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 cognitive by global consumer, accept 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 is in low power supply supply status, and CPU closes, and other equipment are normally worked, and can wake computing machine up by mouse, keyboard etc.;
S2, power supply armed state, is that with the difference of S1 bus clock is also closed.
S3, operating system, current to exist all data in internal memory to preserve motionless, then enters " false shutdown " state, now except internal memory needs power supply, keeps data, and other unit is all stopped power supply.
S4, depositing in hard disk of the data integrity in operating system memory, all parts quit work.
S5, off-mode, all devices Close All.
The time that S1 wakes computing machine up to S5 increases successively.
In existing adapter, all comprise a pwm unit and an output Shaping unit, wherein, in this output Shaping unit, include the energy-storage travelling wave tubes such as electric capacity, inductance, 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 efficiency lower.
Summary of the invention
The object of this invention is to provide a kind of power supply adaptor and portable computer, improve the efficiency of adapter.
To achieve these goals, the embodiment of the present invention provides a kind of power supply adaptor, is used to portable computer power supply, comprises that original state is pwm unit and the output Shaping unit of duty, and described power supply adaptor also comprises:
The first acquisition module, for obtaining the state judgement parameter of described portable computer and the output voltage of output Shaping unit;
The first judge module, for judging that according to state parameter judges that whether described portable computer is in the first state, and when judging described portable computer in the 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; Described the first predeterminated voltage thresholding is more than or equal to described the second predeterminated voltage thresholding;
The first control module, for when described judged result shows that described output voltage is greater than described the first predeterminated voltage thresholding, control described pwm unit in closed condition, and when described judged result shows that described output voltage is less than described the second predeterminated voltage thresholding, control described pwm unit in running order.
Above-mentioned power supply adaptor, wherein, when described portable computer inside comprises rechargable power supplies, described power supply adaptor also comprises:
The second acquisition module, for mutual with described portable computer, obtains a battery status judgement parameter;
The second control module, for when judging rechargable power supplies in charged state according to described battery status judgement parameter, closes described the first control module, otherwise opens described the first control module.
Above-mentioned power supply adaptor, wherein, described state judgement 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, when described state judges the current power consumption that parameter is described portable computer, described the first judge module specifically comprises:
First module, for the magnitude relationship of more described current power consumption and the first thresholding;
Second unit, for when described current power consumption is less than the first thresholding, the current state that judges described portable computer is described the first state;
Described the first thresholding be the maximum power dissipation of described portable computer under the first state or maximum power dissipation and a fault-tolerant thresholding and.
Above-mentioned power supply adaptor, wherein, current power consumption and duration that described state judgement parameter is portable computer, described the first judge module specifically comprises:
First module, for the magnitude relationship of more described current power consumption and the first thresholding;
Unit the 3rd, for being less than the first thresholding in described current power consumption, and duration while surpassing the second default duration, the current state that judges described portable computer is described the first state;
Described the first thresholding be the maximum power dissipation of described portable computer under the first state or 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 in the output channel of described output Shaping unit;
Described the first acquisition module specifically comprises:
Current measuring element, for detection of the electric current of described resistive element;
Voltage detector component, for detection of the output voltage of described output Shaping unit;
The current power consumption of described portable computer is the product of the electric current of described resistive element and the output voltage of described output Shaping unit.
Above-mentioned power supply adaptor, wherein, be also provided with a switch that is initially in closure state on described power supply adaptor, described the first control module is connected with described switch, specifically for disconnecting or conducting by controlling described switch, make described pwm unit corresponding to closing or duty.
Above-mentioned power supply adaptor, wherein, described power supply adaptor also comprises:
Time detecting module, judges that according to state judgement parameter described portable computer when the first state, detects described portable computer in the duration of described the first state for described the first judge module;
The 3rd control module, at described portable computer when duration of described the first state surpasses default duration, control described the first control module and close, control described switch and disconnect.
Above-mentioned power supply adaptor, wherein, described power supply adaptor also comprises:
Notification module, at described portable computer when duration of described the first state surpasses default duration, to described portable computer, send out code, make described portable computer shutdown.
To achieve these goals, the embodiment of the present invention provides a kind of portable computer, comprising:
The 3rd acquisition module, for obtaining the output voltage of a state judgement parameter and power supply adaptor;
The second judge module, for judging that according to state parameter judges that whether described portable computer is in the first state, and when judging described portable computer in the 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; Described the first predeterminated voltage thresholding is more than or equal to described the second predeterminated voltage thresholding;
The 4th control module, for when described judged result shows that described output voltage is greater than described the first predeterminated voltage thresholding, to power supply adaptor, send the first steering order, make pwm unit in described power supply adaptor in closed condition, and when described judged result shows that described output voltage is less than described the second predeterminated voltage thresholding, to power supply adaptor, send the second steering order, make the pwm unit in described power supply adaptor in running order.
To achieve these goals, the embodiment of the present invention provides a kind of power supply adaptor, comprises pwm unit and output Shaping unit, and described power supply adaptor also comprises:
Command reception module, the first steering order or the second steering order that for receiving portable computer, send, described the first steering order is described portable computer in the first state, and the instruction that the output voltage of output Shaping unit sends while being greater than described the first predeterminated voltage thresholding, described the second steering order is described portable computer in the first state, and the instruction that sends while being less than described the second predeterminated voltage thresholding of the output voltage of power supply adaptor; Described the first predeterminated voltage thresholding is more than or equal to described the second predeterminated voltage thresholding;
The 5th control module, while being used for receiving described the first steering order in described command reception unit, control described pwm unit in closed condition, while receiving described the second steering order in described command reception unit, control described pwm unit in opening.
Above-mentioned power supply adaptor, wherein, be also provided with a switch that is initially in closure state in described power supply adaptor, described the first control module is connected with described switch, for disconnecting or conducting by controlling described switch, make described pwm unit corresponding to closing or duty.
The embodiment of the present invention has following beneficial effect:
In the power supply adaptor and portable computer of the embodiment of the present invention, at described portable computer during in the lower state of energy consumption, when if the output voltage of power supply adaptor is greater than the first predeterminated voltage thresholding, control described pwm unit in closed condition, the energy of the energy-storage travelling wave tube utilization storage in output Shaping unit is that portable computer is powered, and when output voltage is less than the second predeterminated voltage thresholding, control described pwm unit in running order, by adapter, be that portable computer is powered, and be energy-storage travelling wave tube power supply, so that the energy that next round is utilized energy-storage travelling wave tube utilization storage is powered for portable computer.Therefore, when system is used the excess energy work of energy-storage travelling wave tube storage, the switching device in the PWM module of adapter is all in off state, and the off state time is longer, and the energy of consumption is fewer.And the energy consumption of switching device accounts for the very most of of whole adapter energy consumption under underloading situation, therefore, the embodiment of the present invention can significantly reduce the loss of the switching device in the PWM module of adapter under underloading situation, has improved the efficiency of adapter.
Accompanying drawing explanation
Fig. 1 is the structural representation of the power supply adaptor of the embodiment of the present invention;
Fig. 2 is the detailed structure schematic diagram of the power supply adaptor of the embodiment of the present invention;
Fig. 3 is the power supply adaptor of the embodiment of the present invention detailed structure schematic diagram when adapter end is realized consumption detection.
Embodiment
In specific embodiments of the invention, utilize energy that the energy-storage travelling wave tube in output Shaping unit stores in course of normal operation to provide electric power support for portable computer, to improve the efficiency of adapter.
As shown in Figure 1, the power supply adaptor of the embodiment of the present invention, is used to portable computer power supply, comprises that original state is pwm unit and the output Shaping unit of duty, described pwm unit is connected with output Shaping unit by converting unit, and described power supply adaptor also comprises:
The first acquisition module, for obtaining the state judgement parameter of described portable computer and the output voltage of output Shaping unit;
The first judge module, for judging that according to state parameter judges that whether described portable computer is in the first state, and when judging described portable computer in the 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; Described the first predeterminated voltage thresholding is greater than described the second predeterminated voltage thresholding;
The first control module, for when described judged result shows that described output voltage is greater than described the first predeterminated voltage thresholding, control described pwm unit in closed condition, and when described judged result shows that described output voltage is less than described the second predeterminated voltage thresholding, control described pwm unit in running order.
Described the first predeterminated voltage thresholding and the second predeterminated voltage thresholding can arrange as required, guarantee that the first predeterminated voltage thresholding is more than or equal to the second predeterminated voltage thresholding.
Certainly, at the first predeterminated voltage thresholding and the second predeterminated voltage thresholding not etc. time, when described output voltage is between described the first predeterminated voltage thresholding and described the second predeterminated voltage thresholding, described the first control module is also constant for maintaining the state of described pwm unit.
Certainly, consider the situation of the energy-storage travelling wave tube in the power consumption ability of existing portable computer and the output Shaping unit of adapter, generally speaking, this first state should be selected the state that power consumption is less, as S3, S4 and S5 state, under these states, power consumption is few, can support its work certain hour by the energy-storage travelling wave tube in output Shaping unit.
Meanwhile, along with the continuous progress of device fabrication, the power consumption of portable computer is fewer and feweri, or the storage capacity of energy-storage travelling wave tube is increasing, and this state also can change, and as selected S1, S2 state, even S0 also can.
Certainly, in specific embodiments of the invention, consider that portable computer major part all used rechargeable battery, and rechargeable battery is in when charging, needing voltage that power supply adaptor provides is the voltage of portable computer while working in S0 pattern, in this case, even if portable computer works in low power consumpting state (as states such as S4, S5), also should, by adapter normal power supply, under the circumstances, in the power supply adaptor of the embodiment of the present invention, also comprise:
The second acquisition module, for mutual with described portable computer, obtains a battery status judgement parameter;
The second control module, for when judging rechargable power supplies in charged state according to described battery status judgement parameter, closes described the first control module, otherwise described the first control module of working.
From above-mentioned description, can find, power supply adaptor need to obtain two-part parameter:
State judgement parameter; With
The output voltage of output Shaping unit.
For the output voltage of output Shaping unit, this is fairly simple, directly by voltage detector component, can realize.
And for state judgement parameter, in specific embodiments of the invention, can realize in several ways, if state judgement 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 implementation one, the state parameter that this state judgement parameter is portable computer, this state judgement parameter is directly obtained from portable computer end.
In implementation one, owing to directly obtaining the state parameter of portable computer from portable computer end, therefore need to be when power supply adaptor and portable computer need to carry out the transmission of state parameter, therefore need to increase the corresponding PIN for data transmission arranging at power supply adaptor and portable computer end and carry out the transmission of state parameter.
Concrete which kind of communication mode that adopts does not limit in specific embodiments of the invention, anyly can between external equipment and portable computer, communicate the transmission that mode may be used to state parameter, and no further details to be given herein.
< implementation two >
While directly obtaining state parameter from portable computer, consider that the electromagnetic interference (EMI) of power supply adaptor itself is larger, data may be made mistakes in transmission receiving course, in implementation two, and the current power consumption that this state judgement parameter is portable computer.
In conjunction with the description in background technology can, in the S0-S5 state of portable computer, under every kind of state, the equipment of closing is different, as S0, equipment is all worked, S1, CPU closes, S3 only has internal memory work, S4 and S5, equipment Close All.
Because the equipment of work is different, maintain the needed energy consumption of these equipment work also inevitable different, therefore, in implementation two, directly obtain the current power consumption of portable computer, and judge its residing state according to its current power consumption, be elaborated below.
First state of take below comprises that S3, S4 and S5 state are described in detail the course of work of power supply adaptor as example.
Set in advance two following thresholdings:
A1, S3, S4 and S5 state, the maximal value of the power consumption of portable computer.
While being single state for the first state, A1 is the power consumption of portable computer under this single status.
Then from portable computer, obtain current power consumption A, and the magnitude relationship of judgement and A1, generally, no matter portable computer, in which kind of state, now comprises following several relations:
A is greater than A1; Or
A is less than A1.
Because A1 is S3, S4 and S5 state, the maximal value of the power consumption of portable computer, if A is greater than A1, the current state that shows portable computer is not S3 or S4 or S5 state, otherwise shows that portable computer is current for S3, S4 or S5 state.
Certainly, after considering that portable computer is used a period of time, due to device aging, power consumption can increase, and therefore, can also adopt following judgment mode.
The magnitude relationship of judgement and A1+ Δ, generally, no matter portable computer, in which kind of state, now comprises following several relations:
A is greater than A1+ Δ; Or
A is less than A1+ Δ.
Because A1 is S3, S4 and S5 state, the maximal value of the power consumption of portable computer, if A is greater than A1+ Δ, the current state that shows portable computer is not S3 or S4 or S5 state; Otherwise show that portable computer is current for S3, S4 or S5 state.
In specific embodiments of the invention, can obtain in the following way the current power consumption of portable computer, be described as follows.
In this power supply adaptor, also comprise a resistive element, be arranged in the output channel of described output Shaping unit;
Described the first acquisition module specifically comprises:
Current measuring element, for detection of the electric current of described resistive element;
Voltage detector component, for detection of the output voltage of described output Shaping unit;
The current power consumption of described portable computer is the product of the electric current of described resistive element and the output voltage of described output Shaping unit.
Certainly, because the direct-flow input end of portable computer is all in series with resistance, also can carry out the detection of electric current and voltage by this resistance, and the current power consumption of utilizing the electric current detect and voltage to calculate portable computer, then by data channel, by portable computer, pass to power supply adaptor.
< implementation three >
In implementation one, directly from portable computer, obtain state parameter, but the electromagnetic interference (EMI) of considering power supply adaptor itself is larger, data may be made mistakes in receiving course in transmission, in implementation two, with the current power consumption of portable computer, judge, but it does not consider the power consumption saltus step problem that portable computer produces due to extraneous factor, therefore, in implementation three, current power consumption and duration that this state judgement parameter is portable computer.
In conjunction with the description in background technology can, in the S0-S5 state of portable computer, under every kind of state, the equipment of closing is different, as S0, equipment is all worked, S1, CPU closes, S3 only has internal memory work, S4 and S5, equipment Close All.
Because the equipment of work is different, maintain the needed energy consumption of these equipment work also inevitable different, therefore, in implementation three, directly from portable computer, obtain its current power consumption, and judge its residing state according to its current power consumption and duration, be elaborated below.
Set in advance two following thresholdings:
A1, S3, S4 and S5 state, the maximal value of the power consumption of portable computer.
Then from portable computer, obtain current power consumption A, and the magnitude relationship of judgement and A1, generally, no matter portable computer, in which kind of state, now comprises following several relations:
A is greater than A1, and the duration surpasses T1; Or
A is less than A1, and the duration surpasses T2.
Because A1 is S3, S4 and S5 state, the maximal value of the power consumption of portable computer, if A is greater than A1, the current state that shows portable computer is not S3 or S4 or S5 state, otherwise shows that portable computer is current for S3, S4 or S5 state.
For implementation two, added the factor of duration, the power consumption saltus step that can avoid portable computer to produce due to extraneous factor causes the problem of error in judgement.
Certainly, the reason based on same, after considering that portable computer is used a period of time, due to device aging, power consumption can increase, and therefore, can also adopt following judgment mode.
The magnitude relationship of judgement and A1+ Δ (fault-tolerant thresholding), generally, no matter portable computer, in which kind of state, now comprises following several relations:
A is greater than A1+ Δ, and the duration surpasses T1; Or
A is less than A1+ Δ, and the duration surpasses T2.
Certainly, this T1 and T2 can arrange identical time value, also can be different.
In specific embodiments of the invention, can obtain in the following way the current power consumption of portable computer, be described as follows.
In this power supply adaptor, also comprise a resistive element, be arranged in the output channel of described output Shaping unit;
Described the first acquisition module specifically comprises:
Current measuring element, for detection of the electric current of described resistive element;
Voltage detector component, for detection of the output voltage of described output Shaping unit;
The current power consumption of described portable computer is the product of the electric current of described resistive element and the output voltage of described output Shaping unit.
In specific embodiments of the invention, the first control module need to be controlled described pwm unit 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 >
Path control mode.
In implementation two, by control indirectly control pwm unit in the electric loop of pwm unit work whether, be described as follows.
One switch that is initially in closure state is set, and described the first control module is connected with described switch, and described the first control module, for disconnecting or conducting by controlling described switch, makes described pwm unit corresponding to closing or duty.
Generally, power supply adaptor comprises:
The city's plug being linked in sequence, anti-electromagnetic interference (EMI) filter unit, input shaper unit, converting unit and output Shaping unit, simultaneously, input shaper unit is also connected to converting unit by start-up circuit and pwm unit, and pwm unit is connected with 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 schematic diagram, this switch can be arranged at the optional position shown in the dotted line frame of Fig. 2, certainly, can also be other positions, in figure, does not illustrate one by one.
By Fig. 2, can find, no matter which position of switch in Fig. 2, as long as switch disconnects, pwm unit or cannot obtain correct input signal, or cannot output signal, therefore cannot normally work, corresponding to closed condition, once and switch conduction is identical with common adapter, pwm unit is in opening.
From Fig. 2, can find, wherein be provided with light lotus root unit, its effect is isolation primary side and out secondary, breaks off potential safety hazard.
As shown in Figure 3, a kind of concrete structure schematic diagram for the adapter of the embodiment of the present invention, wherein adapter passes through in output terminal resistance in series, and the 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, the first judge module is by relatively current power consumption and a power consumption thresholding judge the current residing state of notebook, when finding portable computer in the first state, further the size of the described output voltage of judgement and the first predeterminated voltage thresholding and the second predeterminated voltage thresholding, obtains a judged result; Described the first predeterminated voltage thresholding is greater than described the second predeterminated voltage thresholding;
And by the first control module when described judged result shows that described output voltage is greater than described the first predeterminated voltage thresholding, control described switch in off-state, and when described judged result shows that described output voltage is less than described the second predeterminated voltage thresholding, control described switch in conducting state.
If portable computer maintains a very long time in this state, show user a very long time do not use portable computer, now, for conservation of power, should close portable computer and close adapter, therefore, described power supply adaptor can also comprise:
Time detecting module, judges that according to state judgement parameter described portable computer when the first state, detects described portable computer in the duration of described the first state for described the first judge module;
The 3rd control module, at described portable computer when duration of described the first state surpasses default duration, control described the first control module and close, and control described switch and disconnect.
Now, the first control module can not had an effect again, and because switch disconnects, power supply adaptor is no longer portable computer power supply, makes 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, at described portable computer when duration of described the first state surpasses default duration, to described portable computer, send out code, make described portable computer shutdown.
Certainly, this notification module can not arrange yet, and is made an appointment by adapter and computer end, as portable computer as described in duration of the first state while surpassing default duration, both sides' synchronous working, shuts down after portable computer save data, and adapter cut-off switch.
As previously mentioned, after adapter cut-off switch, the energy of storing in output Shaping unit can also support the of short duration time of working with notebook computer, is enough to support that portable computer completes shutdown process.
Below the course of work of the adapter shown in Fig. 3 is described in detail.
Under portable computer is in running order, the first acquisition module is according to the electric current and the voltage that obtain, the first judge module obtains the current power consumption of portable computer, judgement finds that portable computer is not in S3 state, therefore can further not judge the magnitude relationship of current output voltage and predeterminated voltage thresholding, also just can not trigger the first control module, Simultaneous Switching is in closure state, now, adapter is with adapter is identical conventionally.
Suppose that user leaves computer a period of time, notebook computer enters holding state, the first acquisition module is according to the electric current and the voltage that obtain, the first judge module obtains after the current power consumption of portable computer, discovery is lower than a power consumption thresholding, judgement finds that portable computer is not in S3 state, further judges the size of output voltage and the first predeterminated voltage thresholding and the second predeterminated voltage thresholding of shaping output unit, obtains a judged result;
Due to before, shaping output unit is in common duty, so output voltage is higher, and therefore, judged result can indicate output voltage to be greater than the first predeterminated voltage thresholding, and now, the first control module can gauge tap disconnect.
After switch disconnects, the energy that energy-storage travelling wave tube in shaping output unit is stored by release is that portable computer is powered, continuous consumption along with energy, output voltage constantly reduces, after being reduced to the second predeterminated voltage thresholding, the first judge module can be judged output voltage and be less than the second predeterminated voltage thresholding, and now, the first control module can gauge tap conducting.
After switch conduction, the power supply of adapter normal mode, within very short time, output voltage can be brought up to or surpass the first predeterminated voltage thresholding, and while energy-storage travelling wave tube has also completed the storage of energy, because output voltage is brought up to or surpasses the first predeterminated voltage thresholding, judged result can indicate output voltage to be greater than the first predeterminated voltage thresholding, now, the first control module can gauge tap disconnect.
After switch disconnects, be again that the energy that energy-storage travelling wave tube is stored by releases is that portable computer is powered, voltage drop, voltage drop to a certain extent after, the first control module is understood gauge tap conducting.
So move in circles, realized effective utilization of the energy in energy-storage travelling wave tube, improved the efficiency of adapter.
When portable computer enters duty from S3 state, the first acquisition module is according to the electric current and the voltage that obtain, the first judge module obtains the current power consumption of portable computer, judgement finds that portable computer is not when S3 state, conducting that can maintained switch, and can not trigger the first control module.
Certainly, above-mentioned is to take the explanation that duty and S3 state carry out as example, applicable equally for other states, at this, differs and one illustrates.
Above-mentioned is the explanation of carrying out with judge at adapter end, control etc., but should be understood that, the embodiment of the present invention also can be brought in realization at portable computer.
The portable computer of the embodiment of the present invention comprises:
The 3rd acquisition module, for obtaining the state judgement parameter of described portable computer and the output voltage of power supply adaptor;
The second judge module, for judging that according to state parameter judges that whether described portable computer is in the first state, and when judging described portable computer in the 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; Described the first predeterminated voltage thresholding is more than or equal to described the second predeterminated voltage thresholding;
The 4th control module, for when described judged result shows that described output voltage is greater than described the first predeterminated voltage thresholding, to power supply adaptor, send the first steering order, make pwm unit in described power supply adaptor in closed condition, and when described judged result shows that described output voltage is less than described the second predeterminated voltage thresholding, to power supply adaptor, send the second steering order, make the pwm unit in 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 present invention is used to portable computer power supply, comprises that original state is pwm unit and the output Shaping unit of duty, and described power supply adaptor also comprises:
Command reception module, the first steering order or the second steering order that for receiving portable computer, send, described the first steering order is described portable computer in the first state, and the instruction that the output voltage of output Shaping unit sends while being greater than described the first predeterminated voltage thresholding, described the second steering order is described portable computer in the first state, and the instruction that sends while being less than described the second predeterminated voltage thresholding of the output voltage of power supply adaptor; Described the first predeterminated voltage thresholding is more than or equal to described the second predeterminated voltage thresholding;
The 5th control module, while being used for receiving described the first steering order in described command reception unit, control described pwm unit in closed condition, while receiving described the second steering order in described command reception unit, control described pwm unit in opening.
One switch that is initially in closure state can be set in this adapter, described the first control module is connected with described switch, described the first control module, for disconnecting or conducting by controlling described switch, makes described pwm unit corresponding to closing or duty.
Before the setting of this switch, have been described in detail, do not repeat them here.
During adapter work, switching device wherein (being mainly the switching device in PWM module) will be in catabiotic state, at computer during in light condition, the shared proportion of energy that switching device in the energy of portable computer consumption little now adapter consumes is very large, and in the power supply adaptor and portable computer of the embodiment of the present invention, at described portable computer during in the lower state of energy consumption, when if the output voltage of power supply adaptor is greater than the first predeterminated voltage thresholding, control described pwm unit in closed condition, the energy of the energy-storage travelling wave tube utilization storage in output Shaping unit is that portable computer is powered, and when output voltage is less than the second predeterminated voltage thresholding, control described pwm unit in running order, by adapter, be that portable computer is powered, and be energy-storage travelling wave tube power supply, so that the energy that next round is utilized energy-storage travelling wave tube utilization storage is powered for portable computer.Therefore, when system is used the excess energy work of energy-storage travelling wave tube storage, the switching device in the PWM module of adapter is all in off state, and the off state time is longer, and the energy of consumption is fewer.And the energy consumption of switching device accounts for the very most of of whole adapter energy consumption under underloading situation, therefore, the embodiment of the present invention can significantly reduce the loss of the switching device in the PWM module of adapter under underloading situation, has improved the efficiency of adapter.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles 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 (11)
1. a power supply adaptor, is used to portable computer power supply, comprises that original state is pwm unit and the output Shaping unit of duty, it is characterized in that, described power supply adaptor also comprises:
The first acquisition module, for obtaining the state judgement parameter of described portable computer and the output voltage of output Shaping unit;
The first judge module, for judging that according to state parameter judges that whether described portable computer is in the first state, and when judging described portable computer in the 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; Described the first predeterminated voltage thresholding is more than or equal to described the second predeterminated voltage thresholding;
The first control module, for when described judged result shows that described output voltage is greater than described the first predeterminated voltage thresholding, control described pwm unit in closed condition, and when described judged result shows that described output voltage is less than described the second predeterminated voltage thresholding, control described pwm unit in running order;
Wherein, described state judgement 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.
2. power supply adaptor according to claim 1, is characterized in that, when described portable computer inside comprises rechargable power supplies, described power supply adaptor also comprises:
The second acquisition module, for mutual with described portable computer, obtains a battery status judgement parameter;
The second control module, for when judging rechargable power supplies in charged state according to described battery status judgement parameter, closes described the first control module, otherwise opens described the first control module.
3. power supply adaptor according to claim 1, is characterized in that, when described state judges the current power consumption that parameter is described portable computer, described the first judge module specifically comprises:
First module, for the magnitude relationship of more described current power consumption and the first thresholding;
Second unit, for when described current power consumption is less than the first thresholding, the current state that judges described portable computer is described the first state;
Described the first thresholding be the maximum power dissipation of described portable computer under the first state or maximum power dissipation and a fault-tolerant thresholding and.
4. power supply adaptor according to claim 1, is characterized in that, current power consumption and duration that described state judgement parameter is portable computer, described the first judge module specifically comprises:
First module, for the magnitude relationship of more described current power consumption and the first thresholding;
Unit the 3rd, for being less than the first thresholding in described current power consumption, and duration while surpassing the second default duration, the current state that judges described portable computer is described the first state;
Described the first thresholding be the maximum power dissipation of described portable computer under the first state or maximum power dissipation and a fault-tolerant thresholding and.
5. according to the power supply adaptor described in claim 3 or 4, it is characterized in that, described power supply adaptor also comprises:
Resistive element, is arranged in the output channel of described output Shaping unit;
Described the first acquisition module specifically comprises:
Current measuring element, for detection of the electric current of described resistive element;
Voltage detector component, for detection of the output voltage of described output Shaping unit;
The current power consumption of described portable computer is the product of the electric current of described resistive element and the output voltage of described output Shaping unit.
6. power supply adaptor according to claim 1, it is characterized in that, on described power supply adaptor, be also provided with a switch that is initially in closure state, described the first control module is connected with described switch, specifically for disconnecting or conducting by controlling described switch, make described pwm unit corresponding to closing or duty.
7. power supply adaptor according to claim 6, is characterized in that, described power supply adaptor also comprises:
Time detecting module, judges that according to state judgement parameter described portable computer when the first state, detects described portable computer in the duration of described the first state for described the first judge module;
The 3rd control module, at described portable computer when duration of described the first state surpasses default duration, control described the first control module and close, control described switch and disconnect.
8. power supply adaptor according to claim 7, is characterized in that, described power supply adaptor also comprises:
Notification module, at described portable computer when duration of described the first state surpasses default duration, to described portable computer, send out code, make described portable computer shutdown.
9. a portable computer, is characterized in that, comprising:
The 3rd acquisition module, for obtaining the output voltage of a state judgement parameter and power supply adaptor;
The second judge module, for judging that according to state parameter judges that whether described portable computer is in the first state, and when judging described portable computer in the 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; Described the first predeterminated voltage thresholding is more than or equal to described the second predeterminated voltage thresholding;
The 4th control module, for when described judged result shows that described output voltage is greater than described the first predeterminated voltage thresholding, to power supply adaptor, send the first steering order, make pwm unit in described power supply adaptor in closed condition, and when described judged result shows that described output voltage is less than described the second predeterminated voltage thresholding, to power supply adaptor, send the second steering order, make the pwm unit in described power supply adaptor in running order;
Wherein, described state judgement 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.
10. a power supply adaptor, comprises pwm unit and output Shaping unit, it is characterized in that, described power supply adaptor also comprises:
Command reception module, the first steering order or the second steering order that for receiving portable computer, send, described the first steering order is described portable computer in the first state, and the instruction that the output voltage of output Shaping unit sends while being greater than the first predeterminated voltage thresholding, described the second steering order is described portable computer in the first state, and the instruction that sends while being less than the second predeterminated voltage thresholding of the output voltage of power supply adaptor; Described the first predeterminated voltage thresholding is more than or equal to described the second predeterminated voltage thresholding;
The 5th control module, for control described pwm unit in closed condition when described command reception module receives described the first steering order, when receiving described the second steering order, described command reception module controls described pwm unit in opening.
11. power supply adaptors according to claim 10, it is characterized in that, in described power supply adaptor, be also provided with a switch that is initially in closure state, the 5th control module is connected with described switch, for disconnecting or conducting by controlling described switch, make described pwm unit corresponding to closing or duty.
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 CN102200826A (en) | 2011-09-28 |
| CN102200826B true CN102200826B (en) | 2014-09-03 |
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| CN201010134376.3A Active CN102200826B (en) | 2010-02-11 | 2010-03-25 | Power adapter and portable computer |
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| CN103378378B (en) * | 2012-04-28 | 2016-03-30 | 联想(北京)有限公司 | A kind of charging method and device |
| CN103795040B (en) * | 2014-01-28 | 2016-11-09 | 广东欧珀移动通信有限公司 | Electronic equipment and power supply adaptor thereof |
| CN103762691B (en) | 2014-01-28 | 2015-12-23 | 广东欧珀移动通信有限公司 | Battery charger and cell charge protection control method |
| CN105098862A (en) * | 2014-05-19 | 2015-11-25 | 中兴通讯股份有限公司 | Charging control method, charging control device and charging control terminal |
| CN105305521A (en) * | 2014-07-31 | 2016-02-03 | 联想(北京)有限公司 | Control method, microcontroller, adapter controller, adapter and electronic equipment |
| CN109792217A (en) * | 2016-07-24 | 2019-05-21 | 郭振华 | Intelligent control circuit, charger, earth leakage protective device and intelligent socket |
| CN106253663B (en) * | 2016-09-08 | 2018-11-13 | 杰华特微电子（杭州）有限公司 | The control method and control system of load current |
| CN106843449A (en) * | 2017-01-25 | 2017-06-13 | 北京鸿智电通科技有限公司 | A kind of method for managing power supply and system |
| CN110456147B (en) * | 2019-08-29 | 2021-12-24 | 无锡睿勤科技有限公司 | Wattage information acquisition method and device of power adapter and electronic equipment |
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| US7853818B2 (en) * | 2005-02-25 | 2010-12-14 | Intel Corporation | Modifying power adapter output |
| KR100691271B1 (en) * | 2005-08-12 | 2007-03-12 | 삼성전기주식회사 | A constant voltage circuit for power adaptor |
| CN101299164B (en) * | 2008-06-23 | 2011-06-15 | 李幸 | Novel intelligent high-efficiency portable computer electric power supply system |
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