CN102938569B - To the method and apparatus and electronic equipment of power electronic equipment - Google Patents
To the method and apparatus and electronic equipment of power electronic equipment Download PDFInfo
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- CN102938569B CN102938569B CN201110233436.1A CN201110233436A CN102938569B CN 102938569 B CN102938569 B CN 102938569B CN 201110233436 A CN201110233436 A CN 201110233436A CN 102938569 B CN102938569 B CN 102938569B
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Abstract
There is provided a kind of method of supplying power to and electric supply installation and a kind of electronic equipment to power electronic equipment.The method of supplying power to includes：Using battery via the first path to power electronic equipment；The utilization battery via the first path to power electronic equipment during, detect the electric parameter of the battery；Judge whether the electric parameter meets the first predetermined condition, produce the first judged result；And when first judged result represents that the electric parameter meets first predetermined condition, using the battery via alternate path to the power electronic equipment, wherein, first path is different from the alternate path.Using the method for supplying power to, battery capacity can be fully utilized, effectively extend the use time of battery.
Description
Technical field
The present invention relates to the power supply of electronic equipment, and relate more specifically to a kind of supplier of electricity to power electronic equipment
Method, electric supply installation and electronic equipment to power electronic equipment.
Background technology
At present, short the asking as user's complaint maximum of the service time of battery of the electronic equipment of smart mobile phone, PAD etc
Topic.Either smart mobile phone manufacturer, PAD manufacturers or battery manufacture commercial city one after another for such as smart mobile phone, PAD it
The battery of the electronic equipment of class is using conducting a research.
In smart mobile phone, during answering or calling, due to very big (the about 1.5A- of the pulse current of GSM
2A), can cause to fall under cell voltage, the amplitude fallen under the cell voltage depends on the internal resistance of cell.With the Lephone of Legend Company
As a example by, the cell voltage can fall 0.6V or so down.Generally, the minimum 3V of the operating voltage of the hardware chip in smart mobile phone.Examine
Fall under the cell voltage for considering above-mentioned 0.6V or so, it is necessary to the shutdown voltage of Lephone is set in more than 3.6V (3+0.6V),
Thus, be possible to ensure smart mobile phone normal work；Otherwise would be possible to the failure such as crash, restart occur.
However, for one piece of battery, if to have made full use of the energy content of battery, preferably cell voltage is used
2.7V.As can be seen here, the shutdown voltage of Lephone is set in more than 3.6V, necessarily result in battery exist it is substantial amounts of surplus
Complementary energy.
In order to make full use of the energy content of battery, it is desirable to the chip that operating voltage can be selected low, in this case, it is possible to
Directly with battery to system power supply, however, in current electronic application, the most minimum 3V of operating voltage of chip, almost
There is no the chip that voltage is low.
Accordingly, it would be desirable to a kind of can make full use of the energy content of battery to come method of supplying power to and power supply dress to power electronic equipment
Put.
The content of the invention
The present invention is proposed in view of above mentioned problem.The present invention is intended to provide a kind of supplier of electricity to power electronic equipment
Method and electric supply installation, it can fully utilize battery capacity, so as to effectively extend the use time of battery.
According to an aspect of the present invention, there is provided a kind of method of supplying power to power electronic equipment, including：Using battery via
First path is to power electronic equipment；The utilization battery via the first path to power electronic equipment during, detection
The electric parameter of the battery；Judge whether the electric parameter meets the first predetermined condition, produce the first judged result；And work as institute
When stating the first judged result and representing that the electric parameter meets first predetermined condition, using the battery via alternate path to
The power electronic equipment, wherein, first path is different from the alternate path.
Preferably, the electric parameter of battery is the amplitude of the voltage of battery output, and first predetermined condition is：Battery is exported
Voltage amplitude be less than the first predetermined voltage threshold.
Preferably, the electric parameter of battery is the amplitude and the residual electric quantity of battery of the voltage of battery output, described first
Predetermined condition is：The amplitude of the voltage of battery output is less than the first predetermined voltage threshold, and battery dump energy value higher than the
Two predetermined power thresholds.
In the method for supplying power to power electronic equipment of the invention, utilizing battery via the first path to electronics
Before equipment is powered, also include：Detect the electric parameter of the battery；Judge whether the electric parameter meets the described first predetermined bar
Part and/or the second predetermined condition, produce the second judged result；And when second judged result represents that the electric parameter is discontented with
During foot both first predetermined condition and second predetermined condition, using the battery via the first path to the electronics
Equipment is powered；When second judged result represents that the electric parameter meets second predetermined condition and is unsatisfactory for described first
During predetermined condition, using the battery via third path to the power electronic equipment, wherein, the third path with it is described
First path is different with the alternate path.
Preferably, the electric parameter of battery is the amplitude of the voltage of battery output, and first predetermined condition is：Battery is exported
The amplitude of voltage be less than the first predetermined voltage threshold, second predetermined condition is：The amplitude of voltage of battery output is higher than
Second predetermined voltage threshold, second predetermined voltage threshold is higher than first predetermined voltage threshold.
Preferably, the electric parameter of battery is the residual electric quantity of battery, and first predetermined condition is：The residue electricity of battery
Parameter is less than the first predetermined power threshold, and second predetermined condition is：The remaining electric parameter of battery is higher than the 3rd predetermined electricity
Threshold value, the second predetermined power threshold is higher than the described first predetermined power threshold.
Preferably, first path is：By the voltage output of battery output to the electronic equipment；The alternate path
For：The voltage that battery is exported is increased to the first predetermined voltage via booster circuit, and by first predetermined voltage export to
The electronic equipment；And the third path is：The voltage that battery is exported is reduced to the second predetermined electricity via reduction voltage circuit
Pressure, and second predetermined voltage is exported to the electronic equipment.
According to another aspect of the present invention, there is provided a kind of electric supply installation to power electronic equipment, including：Battery, uses
In output supply voltage；Voltage follower circuit, for receiving the supply voltage of battery output and to power electronic equipment, its
Described in voltage follower circuit include the first path and alternate path, first path is different from the alternate path；Detection
Part, the electric parameter for detecting the battery；Judgement part, for judging whether the electric parameter meets the first predetermined bar
Part, and produce the first judged result, wherein, using battery via the first path to power electronic equipment during, work as institute
State the first judged result and represent that the voltage follower circuit switches to profit when the electric parameter meets first predetermined condition
With the alternate path to the power electronic equipment.
Preferably, the voltage follower circuit includes：First switch, the output that it is connected to battery is defeated with electronic equipment
Between entering, and form first path；Second switch, between its output for being connected to battery and the input of booster circuit；
And the booster circuit, the supply voltage for battery to be exported is increased to predetermined voltage, output and the electricity of the booster circuit
The input connection of sub- equipment, the second switch and the booster circuit form the alternate path.In first judged result
When representing that the electric parameter meets first predetermined condition, end first switch, and turn on second switch.
Preferably, the voltage follower circuit includes：First switch, the output that it is connected to battery is defeated with electronic equipment
Between entering, and form first path；Second switch, between its output for being connected to battery and the input of booster circuit；
The booster circuit, the supply voltage for battery to be exported is increased to predetermined voltage；And the 3rd switch, it is connected to described
Between the output of booster circuit and the input of electronic equipment, the second switch, the 3rd switch and the booster circuit shape
Into the alternate path.When first judged result represents that the electric parameter meets first predetermined condition, conducting the
Two switches, the supply voltage that battery is exported is raised using the booster circuit, and full in the voltage of booster circuit output
During three predetermined condition of foot, end first switch, and turn on the 3rd switching.
Preferably, the voltage follower circuit also includes third path, the third path and first path and institute
State alternate path different, the second predetermined voltage is reduced to via reduction voltage circuit for the voltage that exports battery, and by described the
Two predetermined voltages are exported to the electronic equipment；And the judgement part also judges whether the electric parameter of the battery meets
Two predetermined conditions, and produce the second judged result.When second judged result represents that the electric parameter is unsatisfactory for described first
When both predetermined condition and second predetermined condition, using the battery via the first path to the power electronic equipment；
When second judged result represents that the electric parameter meets first predetermined condition and is unsatisfactory for second predetermined condition
When, using the battery via alternate path to the power electronic equipment；When second judged result represents the electricity ginseng
When amount meets second predetermined condition and is unsatisfactory for first predetermined condition, using the battery via third path to institute
State power electronic equipment.
According to another aspect of the invention, there is provided a kind of electronic equipment, including：Battery, for exporting supply voltage；It is many
Individual electronic device；Power management section, the supply voltage for being provided according to the battery is the multiple electronics；
Voltage follower circuit, is arranged between the battery and the power management section, the power supply for receiving the battery output
Voltage and powered to the power management section, wherein, the voltage follower circuit includes the first path and alternate path, institute
State the first path different from the alternate path；Detection part, the electric parameter for detecting the battery；Judgement part, is used for
Judge whether the electric parameter meets the first predetermined condition, and produce the first judged result.Battery is being utilized via the first path
During to power electronic equipment, meet first predetermined condition in the electric parameter when first judged result is represented
When, the voltage follower circuit is powered using the alternate path to the power management section.
Brief description of the drawings
By the way that with reference to accompanying drawing, embodiments of the present invention is described in detail, above and other objects of the present invention, feature,
Advantage will become apparent, wherein：
Fig. 1 illustrates the flow chart of the method for supplying power to power electronic equipment according to a first embodiment of the present invention；
Fig. 2 illustrates the schematic block diagram of the electric supply installation to power electronic equipment according to a first embodiment of the present invention；
Fig. 3 illustrates the example of the circuit of the electric supply installation to power electronic equipment according to a first embodiment of the present invention；
Fig. 4 illustrates two kinds of different working conditions of the circuit shown in Fig. 3；
Fig. 5 illustrates a kind of sample implementation and its two kinds of different working conditions of the circuit in Fig. 3；
Fig. 6 illustrates the improved example to the circuit shown in Fig. 5；
Fig. 7 illustrates three kinds of different working conditions of the circuit shown in Fig. 6；
Fig. 8 illustrates the flow chart of the method for supplying power to power electronic equipment according to a second embodiment of the present invention；
Fig. 9 illustrates the example reality of the circuit of the electric supply installation to power electronic equipment according to a second embodiment of the present invention
Existing form；And
Figure 10 is illustrated including electronic equipment according to a first embodiment of the present invention with the electric supply installation of second embodiment.
Specific embodiment
The method of supplying power to power electronic equipment according to embodiments of the present invention and power supply described below with reference to accompanying drawings
Device and electronic equipment.
First, reference Fig. 1 is illustrated into the method for supplying power to power electronic equipment according to a first embodiment of the present invention
100。
According to embodiments of the present invention starts to the method for supplying power to 100 of power electronic equipment in step S105.
In step S110, using battery via the first path to power electronic equipment.It is via first path, battery is defeated
The voltage for going out is directly output to the electronic equipment.
In step S120, the utilization battery via the first path to power electronic equipment during, detection is described
The electric parameter of battery.As an example, the electric parameter of battery can be the amplitude of the voltage of battery output and/or the residue electricity of battery
Value.
Then, in step S130, judge whether the electric parameter of the battery meets the first predetermined condition, and produce first to sentence
Disconnected result.
As an example, in the case where the electric parameter of battery is the amplitude of voltage of battery output, the first predetermined bar
Part can be：The amplitude of the voltage of battery output is less than the first predetermined voltage threshold.Alternatively as another example, in battery
Electric parameter for battery residual electric quantity in the case of, first predetermined condition can be：The residual electric quantity of battery is low
In the first predetermined power threshold.Alternatively as another example, battery electric parameter for the voltage of battery output amplitude and
In the case of both residual electric quantities of battery, first predetermined condition is：The amplitude of the voltage of battery output is less than first
Predetermined voltage threshold, and battery dump energy value is higher than the second predetermined power threshold.
Next, in step S140, when first judged result represents that the electric parameter meets the described first predetermined bar
During part, using the battery via alternate path to the power electronic equipment, wherein, first path is logical with described second
Road is different.As an example, in the alternate path, the voltage that battery is exported is increased to the first predetermined electricity via booster circuit
Pressure, and first predetermined voltage is exported to the electronic equipment.
For example, being illustrated according to a first embodiment of the present invention so that cell voltage changes between 2.7V to 4.2V as an example
Method.
When the voltage (higher than 3.6V) for battery being exported via the first path is directly output to electronic equipment, detect battery
The voltage of output, and when working as the amplitude of the voltage that detected battery is exported less than 3.6V (the first predetermined voltage threshold), warp
Voltage increase battery exported by booster circuit outputs this to the electronics and sets at least 3.6V (the first predetermined voltage)
It is standby.
As another example, it is directly output to electronics in the voltage (higher than 3.6V) for exporting battery via the first path and sets
When standby, the residual electric quantity of battery is detected, and work as the residual electric quantity of detected battery less than the 70% of specified electric quantity value
When (the first predetermined power threshold), (first is predetermined electric at least 3.6V for the voltage increase for exporting battery via booster circuit
Pressure), and output this to the electronic equipment.
As another example, it is directly output to electronics in the voltage (higher than 3.6V) for exporting battery via the first path and sets
When standby, voltage and the residual electric quantity of battery that detection battery is exported, and work as the amplitude of the voltage of detected battery output
It is higher than the 20% of specified electric quantity value less than the residual electric quantity of 3.6V (the first predetermined voltage threshold) and the battery for being detected
When (the second predetermined power threshold), (first is predetermined electric at least 3.6V for the voltage increase for exporting battery via booster circuit
Pressure), and output this to the electronic equipment.On the other hand, the residual electric quantity in the battery for being detected is less than in specified electricity
When 20% (the second predetermined power threshold) of value, no longer carry out by boosting inverter to power electronic equipment, and can be choosing
Select and turn off electronic equipment.
For example, the first predetermined power threshold can be the 50%-80% of battery specified electric quantity value, described second makes a reservation for
Power threshold can be the 5%-20% of battery specified electric quantity value.
Finally, in step S199, the knot of method of supplying power to 100 to power electronic equipment according to a first embodiment of the present invention
Beam.
Although described under the background to power electronic equipment according to a first embodiment of the present invention to electronic equipment supply
Electricity method of supplying power to 100, although it will be understood by those skilled in the art that can outside electronic equipment or within implement the supplier of electricity
Method 100, i.e., can not only implement the method for supplying power to 100 in the case of from electronic device exterior to power electronic equipment, and
Can also implement in the case where the system unit from the power unit included in electronic equipment into electronic equipment is powered should
Method of supplying power to 100.Hereinafter, for statement is simple, still using " to power electronic equipment " this expression form.Unless otherwise saying
Bright, statement is intended to cover externally to power electronic equipment and in electronic equipment internal from power supply " to power electronic equipment "
Part powers two kinds of situations to the components of system as directed in electronic equipment.
Next, reference picture 2-5 being illustrated, the power supply to power electronic equipment according to a first embodiment of the present invention is filled
Put 200.
The schematic of the electric supply installation 200 to power electronic equipment according to a first embodiment of the present invention is illustrated in Fig. 2
Block diagram.
Electric supply installation 200 includes battery 210, detection part 220, judgement part 230 and voltage follower circuit 240.
As described above, electric supply installation 200 can as the part of electronic equipment including in the electronic device, or
The outside of electronic equipment can be placed in.
Alternatively, electric supply installation 200 can partly in electronic equipment, partly positioned at electronic device exterior.For example, electric
Pond 210 is located at electronic device exterior, and detection part 220, judgement part 230 and voltage follower circuit 240 set positioned at electronics
In standby.
Battery 210 exports supply voltage.Voltage follower circuit 240 receive the battery 210 output supply voltage and to
Power electronic equipment.Detection part 220 detects the electric parameter of the battery, as an example, the electric parameter of battery can be battery
The amplitude of the voltage of output and/or the residual electric quantity of battery.Judgement part 230 judges whether the electric parameter of the battery meets
First predetermined condition, and produce the first judged result.
The voltage follower circuit 240 includes the first path PA and alternate path PB, first path and described second
Path is different.In the first path PA, the voltage of battery output is either directly output to the electronic equipment, and described the
In two path PB, the voltage that battery is exported is increased to the first predetermined voltage via booster circuit, and predetermined electric by described first
Pressure is exported to the electronic equipment.
Using battery 210 via the first path PA to power electronic equipment during, when first judged result
Represent that, when the electric parameter meets first predetermined condition, the voltage follower circuit 240 is switched to using described second
Path PB is to the power electronic equipment.
As an example, in the case where the electric parameter of battery is the amplitude of voltage of battery output, the first predetermined bar
Part can be：The amplitude of the voltage of battery output is less than the first predetermined voltage threshold.Alternatively as another example, in battery
Electric parameter for battery residual electric quantity in the case of, first predetermined condition can be：The residual electric quantity of battery is low
In the first predetermined power threshold.Alternatively as another example, battery electric parameter for the voltage of battery output amplitude and
In the case of both residual electric quantities of battery, first predetermined condition is：The amplitude of the voltage of battery output is less than first
Predetermined voltage threshold, and battery dump energy value is higher than the second predetermined power threshold.
Fig. 3 illustrates showing for the circuit of the electric supply installation 300 to power electronic equipment according to a first embodiment of the present invention
Example.
Electric supply installation 300 includes battery BATTERY, voltage comparator U2, the first path constituted in voltage follower circuit
The PMOS transistor Q1 (first switch) of PA, the booster circuit U1 of the alternate path PB constituted in voltage follower circuit and by voltage
The second switch (not shown) and voltage detector L1 that enable signal En controls of comparator U2 outputs.
During by the first path PA to power electronic equipment, the voltage of voltage detector L1 detection battery outputs
And be input into reference to electricity the voltage output to the in-phase input end of voltage comparator U2 to the inverting input of voltage comparator U2
Pressure Vref (for example, 3.6V), the voltage that voltage comparator U2 exports battery is compared with reference voltage Vref, and exports ratio
Compared with consequential signal.Then, the conduction and cut-off of comparative result signal controlling transistor Q1, and second switch is controlled on the contrary
Conduction and cut-off.
As shown in (A) in Fig. 4, when the voltage of battery output is higher than reference voltage Vref, voltage comparator U2 outputs
Comparative result signal be low level so that PMOS transistor Q1 turn on, and cause second switch be not turned on, i.e. it is obstructed
The voltage that booster circuit U1 raises battery output is crossed, so that the voltage that battery is exported is directly output to via transistor Q1
Electronic equipment.
On the other hand, shown in (B) such as in Fig. 4, when the voltage of battery output is less than reference voltage Vref, voltage ratio compared with
The comparative result signal of device U2 outputs is high level, so that PMOS transistor Q1 ends, and causes second switch conducting, by
This causes that the voltage that battery is exported is increased to the first predetermined voltage by booster circuit, and the voltage output after rising is set to electronics
It is standby.
As an example, implementing form and its two kinds of different work figure 5 illustrates a kind of of the circuit in Fig. 3
State.
As shown in (A) in Fig. 5, electric supply installation includes battery BATTERY, voltage comparator U2, constitutes voltage output electricity
The boosting of the PMOS transistor Q1 (first switch) of the first path PA in road, the alternate path PB constituted in voltage follower circuit
Circuit U 1 and nmos pass transistor Q2 (second switch) and voltage detector L1.
As shown in (B) in Fig. 5, when the voltage of battery output is higher than reference voltage Vref, voltage comparator U2 outputs
Comparative result signal be low level so that PMOS transistor Q1 turn on, and cause nmos pass transistor be not turned on, i.e. no
The voltage that battery is exported is raised by booster circuit U1, so that the voltage that battery is exported directly is exported via transistor Q1
To electronic equipment.
On the other hand, shown in (C) such as in Fig. 5, when the voltage of battery output is less than reference voltage Vref, voltage ratio compared with
The comparative result signal of device U2 outputs is high level, so that PMOS transistor Q1 ends, and causes nmos pass transistor conducting,
So that the voltage that battery is exported is increased to the first predetermined voltage by booster circuit, and by the voltage output after rising to electronics
Equipment.
Although the voltage that battery is exported to be connected to the inverting input of voltage comparator U2 in Fig. 4 and/or Fig. 5, will
Reference voltage is connected to the in-phase input end of voltage comparator U2, and first switch is realized with PMOS transistor, uses NMOS crystal
Pipe realizes second switch, but the invention is not restricted to this.Those skilled in the art are easy to imagine that other circuit modifications,
For example, the voltage that battery is exported is connected into the in-phase input end of voltage comparator U2, by reference voltage be connected to voltage ratio compared with
The inverting input of device U2, first switch is realized with nmos pass transistor, and second switch is realized with MMOS transistors.
Because the first predetermined voltage that stabilization is set up in the output end of booster circuit U1 needs certain transit time, and
In the transit time, the voltage of booster circuit U1 output ends is less than first predetermined voltage and there may exist undesirable electricity
Pressure impact.In order to solve the problem, it is considered to introduce the 3rd between the input of the output end and electronic equipment of booster circuit U1 and open
Close.Fig. 6 illustrates the improvement to the circuit shown in Fig. 5, wherein, in the input of the output end and electronic equipment of booster circuit U1
Between introduce PMOS transistor Q3.
Electric supply installation 600 shown in Fig. 6 is included in battery BATTERY, voltage comparator U2, composition voltage follower circuit
Booster circuit U1 and the NMOS crystal of the PMOS transistor Q1 of the first path PA, the alternate path PB constituted in voltage follower circuit
Pipe Q2 and PMOS transistor Q3, control circuit U 3 and voltage detector L1.
During by the first path PA to power electronic equipment, the voltage of voltage detector L1 detection battery outputs
And reference voltage Vref (for example, 3.6V) is provided to voltage the voltage output to the inverting input of voltage comparator U2
The in-phase input end of comparator U2, the voltage that voltage comparator U2 exports battery is compared with reference voltage Vref, and defeated
Go out comparative result signal.
Three kinds of different working conditions of the circuit shown in Fig. 6 are illustrated in the figure 7.
As shown in (A) in Fig. 7, when the voltage of battery output is higher than reference voltage Vref, voltage comparator U2 outputs
Comparative result signal be low level so that nmos pass transistor Q2 ends, and by controlling circuit U 3 so that PMOS transistor
Q1 is turned on and PMOS transistor Q3 cut-offs, so that the voltage that battery is exported is directly output into electricity via PMOS transistor Q1
Sub- equipment.
As shown in (B) in Fig. 7, when the voltage of battery output is less than reference voltage Vref, voltage comparator U2 outputs
Comparative result signal be high level so that nmos pass transistor Q2 turn on, booster circuit start raise battery output voltage.
The output voltage stabilization of booster circuit before the first predetermined voltage, by controlling circuit U 3 so that PMOS transistor Q1 is still maintained
Conducting and PMOS transistor Q3 still maintain cut-off.
As shown in (C) in Fig. 7, when the voltage of battery output is less than reference voltage Vref, voltage comparator U2 outputs
Comparative result signal be still high level, nmos pass transistor Q2 conductings, and the output voltage stabilization of booster circuit is pre- first
Determine voltage, now, by control circuit U 3 so that PMOS transistor Q1 end, while so that PMOS transistor Q3 turn on so that
By the output voltage output of booster circuit to electronic equipment.
In short, the circuit shown in Fig. 6 and 7 has three working conditions：First working condition, wherein, from battery via
First path is to power electronic equipment；Second working condition, wherein, from battery via the first path to power electronic equipment, and
And booster circuit raises the voltage of battery output and is gradually transitions stable state；3rd working condition, wherein, from battery via
The voltage that battery is exported is increased to the first predetermined voltage and using the voltage after raising to power electronic equipment by alternate path.
Method of supplying power to power electronic equipment according to a first embodiment of the present invention and confession are illustrated above in conjunction with Fig. 1-7
Electric installation, wherein, during being powered via the first path, when the voltage for detecting battery output is less than reference voltage,
The voltage of battery output is raised in alternate path and is powered using the voltage after rising.
However, there will still likely be Similar Problems during electronic equipment is started.Additionally, the use in order to extend battery
Time, it would still be possible to which cell voltage higher is provided, for example, be higher than 4.2V, in the case, it may not be possible to directly defeated using battery
The high voltage for going out comes directly to the chip power supply in electronic equipment, is otherwise possible to burn out the chip in electronic equipment.
Next, illustrating the method for supplying power to power electronic equipment according to a second embodiment of the present invention with reference to Fig. 8
800。
First, it is according to embodiments of the present invention to start in step S105 to the method for supplying power to 800 of power electronic equipment.
In step S810, the electric parameter of the battery is detected.As described above, the electric parameter of battery can be battery output
The amplitude of voltage and/or the residual electric quantity of battery.
Then, in step S820, judge whether the electric parameter of the battery meets the second predetermined condition, and produce judgement to tie
Really.
As an example, in the case where the electric parameter of battery is the amplitude of voltage of battery output, the second predetermined bar
Part can be：The amplitude of the voltage of battery output is higher than the second predetermined voltage threshold.Alternatively as another example, in battery
Electric parameter for battery residual electric quantity in the case of, second predetermined condition can be：The residual electric quantity of battery is high
In the 3rd predetermined power threshold.
In the case where the judged result of step S820 represents that the electric parameter is unsatisfactory for second predetermined condition, power supply
Method 800 proceeds to step S830.In step S830, judge whether the electric parameter of the battery meets the first predetermined condition, and
Produce judged result.
As an example, in the case where the electric parameter of battery is the amplitude of voltage of battery output, the first predetermined bar
Part can be：The amplitude of the voltage of battery output is less than the first predetermined voltage threshold.Alternatively as another example, in battery
Electric parameter for battery residual electric quantity in the case of, first predetermined condition can be：The residual electric quantity of battery is low
In the first predetermined power threshold.Alternatively as another example, battery electric parameter for the voltage of battery output amplitude and
In the case of both residual electric quantities of battery, first predetermined condition is：The amplitude of the voltage of battery output is less than first
Predetermined voltage threshold, and battery dump energy value is higher than the second predetermined power threshold.
In the case where the judged result of step S830 represents that the electric parameter is unsatisfactory for first predetermined condition, power supply
Method 800 proceeds to step S860.In step S860, using battery via the first path to the power electronic equipment.Hereafter,
In step S870, the utilization battery via the first path to power electronic equipment during, detect the electricity of the battery
Parameter.Then, the return to step S830 of method of supplying power to 800.In other words, the operation since step S860 with according to the present invention the
Operation in the method for supplying power to power electronic equipment of one embodiment is identical.
In the case where the judged result of step S820 represents that the electric parameter meets second predetermined condition, for example,
The amplitude of the voltage of battery output is higher than the 3rd predetermined electricity higher than the residual electric quantity of the second predetermined voltage threshold or battery
Threshold value, method of supplying power to 800 proceeds to step S840.In step S840, using the battery via third path to the electronics
Equipment is powered, wherein, first path is different from the third path.As an example, in the third path, by battery
The voltage of output is reduced to the second predetermined voltage via reduction voltage circuit, and second predetermined voltage is exported to the electronics sets
It is standby.
In the case where the judged result of step S830 represents that the electric parameter of the battery meets the first predetermined condition, example
Such as, the amplitude of the voltage of battery output is less than the first predetermined electricity less than the first predetermined voltage threshold, the residual electric quantity of battery
The amplitude of threshold value or the voltage of battery output is less than the first predetermined voltage threshold and battery dump energy value is pre- higher than second
Determine power threshold, method of supplying power to 800 proceeds to step S850.In step S850, using the battery via alternate path to institute
Power electronic equipment is stated, wherein, first path is different from the alternate path.As an example, in the alternate path,
The voltage that battery is exported is increased to the first predetermined voltage via booster circuit, and first predetermined voltage is exported to described
Electronic equipment.
For example, illustrating confession according to a second embodiment of the present invention so that cell voltage changes between 2.7V to 5V as an example
Method for electrically.
When electronic equipment is started shooting, when the voltage of battery output is higher than 4.2V, battery is exported via third path
Voltage is reduced to the second predetermined voltage (for example, 4.2V), and is provided to electronic equipment；Battery output voltage in 3.6V
During between 4.2V, the voltage that battery is exported is directly output to electronic equipment via the first path；And in the electricity of battery output
When being pressed between 2.7V to 4.2V, via alternate path by the voltage that battery is exported be increased to the first predetermined voltage (for example,
3.6V), and it is provided to electronic equipment.
When the voltage of battery output is gradually lowered to below 4.2V from more than 4.2V, switches to first from third path and lead to
Road direction power electronic equipment.When the voltage of battery output is gradually lowered to below 3.6V from more than 3.6V, cut from the first path
Alternate path is changed to power electronic equipment, in the case, being supplied to electronic equipment according to a first embodiment of the present invention is repeated
The method of supplying power to 100 of electricity.
Finally, in step S899, the knot of method of supplying power to 800 to power electronic equipment according to a second embodiment of the present invention
Beam.
The one of the circuit of the electric supply installation to power electronic equipment according to a second embodiment of the present invention is illustrated in fig .9
Plant sample implementation.
Electric supply installation 900 includes battery BATTERY, voltage comparator U2, voltage comparator U4, composition voltage follower circuit
In the first path PA PMOS transistor Q1, constitute voltage follower circuit in alternate path PB booster circuit U1 and NMOS
The reduction voltage circuit U3 and nmos pass transistor of transistor Q2 and PMOS transistor Q3, the alternate path PB constituted in voltage follower circuit
Q4 and PMOS transistor Q5, control circuit U 5 and voltage detector L1.
The voltage detector L1 voltages that export of detection battery and by the voltage output to voltage comparator U2 anti-phase input
End, reference voltage Vref 1 (for example, 3.6V) is provided to the in-phase input end of voltage comparator U2, and voltage comparator U2 is by electricity
The voltage of pond output is compared with reference voltage Vref 1, and exports the first comparative result signal.
The voltage detector L1 voltages that export of detection battery and by the voltage output to voltage comparator U4 anti-phase input
End, reference voltage Vref 2 (for example, 4.2V) is provided to the in-phase input end of voltage comparator U4, and voltage comparator U4 is by electricity
The voltage of pond output is compared with reference voltage Vref 2, and exports the second comparative result signal.
Control circuit U 5 is according to the first comparative result signal and the second comparative result signal leading come controlling transistor Q1-Q5
Logical and cut-off.
For example, when the voltage of battery output is higher than 4.2V, the first comparative result and the second comparative result are low level,
Now control circuit U 5 control Q4 and Q5 conductings, and end Q1-Q3, thus reduction voltage circuit is utilized by battery via third path
The voltage of output is reduced to such as 4.2V, and outputs this to electronic circuit.
For example, when the voltage of battery output is between 3.6V and 4.2V, the first comparative result is low level, and second
Comparative result is high level, now controls the control Q1 conductings of circuit U 5, and ends Q2-Q5, thus via the first path by electricity
The voltage of pond output is directly output to electronic circuit.
For example, when the voltage of battery output is between 2.7V and 3.6V, the first comparative result is high level, and second
Comparative result is low level, now controls the control Q2 and Q3 conductings of circuit U 5, and ends Q1, Q4 and Q5, thus via second
The voltage that battery is exported is increased to such as 3.6V by path using booster circuit, and outputs this to electronic circuit.
Although being mainly described using the voltage of battery output as the electric parameter of battery above, this area skill
Art personnel also easily by read battery voltameter using the dump energy of battery as battery electric parameter so that similarly
Realize the method for supplying power to and electric supply installation to power electronic equipment of the invention.
As described above, can not only implement according to the present invention in the case of from electronic device exterior to power electronic equipment
The method of supplying power to and electric supply installation of the first and second embodiments, and can also be in the power unit from included in electronic equipment
Implement the method for supplying power to and electric supply installation in the case of being powered to the system unit in electronic equipment.
Shown in Figure 10 including the confession to power electronic equipment according to a first embodiment of the present invention with second embodiment
The schematic diagram of the electronic equipment 1000 of electric installation.
Electronic equipment 1000 include battery 1010, detection part 1020, judgement part 1030, voltage follower circuit 1040,
Power management section 1050 and multiple electronic devices 1060.
Additionally, electronic equipment 1000 can also include control circuit 1070 as needed.
Battery 1010 exports supply voltage.Voltage follower circuit 1040 receives the supply voltage of the output of the battery 1010 simultaneously
Powered to power management section 1050.Detection part 1020 detects the electric parameter of the battery, as an example, the electric parameter of battery
Can be the amplitude and/or the residual electric quantity of battery of the voltage of battery output.Judgement part 1030 judges the electricity of the battery
Whether parameter meets the first predetermined condition, and produces the first judged result.
The voltage follower circuit 1040 includes the first path PA and alternate path PB, first path and described second
Path is different.In the first path PA, the voltage of battery output is either directly output to the electronic equipment, and described the
In two path PB, the voltage that battery is exported is increased to the first predetermined voltage via booster circuit, and predetermined electric by described first
Pressure is exported to the electronic equipment.
Using battery 1010 via the first path PA to power electronic equipment during, when first judged result
Represent that, when the electric parameter meets first predetermined condition, the voltage follower circuit 1040 is switched to using described second
Path PB is to the power electronic equipment.
As an example, in the case where the electric parameter of battery is the amplitude of voltage of battery output, the first predetermined bar
Part can be：The amplitude of the voltage of battery output is less than the first predetermined voltage threshold.Alternatively as another example, in battery
Electric parameter for battery residual electric quantity in the case of, first predetermined condition can be：The residual electric quantity of battery is low
In the first predetermined power threshold.Alternatively as another example, battery electric parameter for the voltage of battery output amplitude and
In the case of both residual electric quantities of battery, first predetermined condition is：The amplitude of the voltage of battery output is less than first
Predetermined voltage threshold, and battery dump energy value is higher than the second predetermined power threshold.
It should be appreciated that can be realized with the various forms of hardware, software, firmware, application specific processor or combinations thereof
Method of supplying power to and electric supply installation to power electronic equipment of the invention.
Although some embodiments of the present invention herein with reference to Description of Drawings, but it is to be understood that the embodiment is only
It is illustrative, and not restrictive.It will be appreciated by those skilled in the art that being limited in without departing substantially from appended claims and their equivalents
In the case of fixed scope and spirit of the present invention, the change on various forms and details can be made to these exemplary embodiments
Change.
Claims (11)
1. method of supplying power to from a kind of utilization battery to power electronic equipment, the electric parameter of the battery includes the voltage of battery output
Amplitude and battery residual electric quantity, the method for supplying power to includes：
During first state, the voltage that battery is exported is directly output to the electronic equipment via the first path；
During the voltage output for exporting battery to the electronic equipment, the electric parameter of the battery is detected；
When the amplitude of the voltage of battery output makes a reservation for less than the first predetermined voltage threshold and battery dump energy value less than first
Power threshold and during higher than the second predetermined power threshold, located in the output voltage stabilization of booster circuit before the first predetermined voltage
In the second working condition, second working condition from battery via first path to power electronic equipment, and boost
Circuit raises the voltage of battery output and is gradually transitions stable state；
When booster circuit stabilization is in the first predetermined voltage, the voltage that battery is exported is increased to the via alternate path from battery
One predetermined voltage simultaneously utilizes the voltage after raising to power electronic equipment.
2. method of supplying power to as claimed in claim 1, before the voltage for exporting battery is directly output to the electronic equipment,
Also include：
Detect the electric parameter of the battery；
When the amplitude of the voltage of battery output is higher than the second predetermined voltage threshold, the voltage that battery is exported is via reduction voltage circuit
The second predetermined voltage is reduced to, and second predetermined voltage is exported to the electronic equipment, the second predetermined voltage threshold
Value is higher than first predetermined voltage threshold, and second predetermined voltage is higher than first predetermined voltage；And
When battery output voltage amplitude higher than the first predetermined voltage threshold and during less than the second predetermined voltage threshold, by battery
The voltage of output is directly output to the electronic equipment.
3. method of supplying power to as claimed in claim 2, wherein,
The electric parameter of the battery also residual electric quantity including battery,
Wherein, when battery output voltage remaining electric parameter of the amplitude higher than the second predetermined voltage threshold and battery higher than the
During three predetermined power thresholds, the voltage that battery is exported is reduced to the second predetermined voltage via reduction voltage circuit, and by described second
Predetermined voltage is exported to the electronic equipment, and the 3rd predetermined power threshold is higher than the described second predetermined power threshold；And
When battery output voltage amplitude higher than the first predetermined voltage threshold and less than the second predetermined voltage threshold and battery
Remaining electric parameter less than the 3rd predetermined power threshold and during higher than the first predetermined power threshold, the voltage that battery is exported is direct
Export to the electronic equipment.
4. a kind of electric supply installation to power electronic equipment, including：
Battery, for exporting supply voltage；
Voltage follower circuit, for receiving the supply voltage of battery output and to power electronic equipment, wherein the voltage
Output circuit includes the first path and alternate path, and the voltage that battery is exported is directly output to the electronics by first path
Equipment, the voltage that the alternate path exports battery is increased to the first predetermined voltage and pre- by described first via booster circuit
Determine voltage output to the electronic equipment；
Detection part, the electric parameter for detecting the battery, the electric parameter of the battery includes the supply voltage of battery output
Amplitude and battery residual electric quantity；
Judgement part, for judge battery output supply voltage amplitude whether less than the first predetermined voltage threshold and
And whether the residual electric quantity of the battery is judged less than the first predetermined power threshold and higher than the second predetermined power threshold,
Wherein, using battery via the first path to power electronic equipment during, when the judgement part determine it is described
The amplitude of the supply voltage of battery output is less than first less than the residual electric quantity of the first predetermined voltage threshold and the battery
Predetermined power threshold and during higher than the second predetermined power threshold, booster circuit output voltage stabilization the first predetermined voltage it
Before be in the second working condition, second working condition from battery via first path to power electronic equipment, and
Booster circuit raises the voltage of battery output and is gradually transitions stable state；In booster circuit stabilization in the first predetermined voltage
When, the voltage that battery is exported is increased to the first predetermined voltage via alternate path and using the voltage after raising to electricity from battery
Sub- equipment is powered.
5. electric supply installation as claimed in claim 4, wherein,
The detection part be for detect battery output supply voltage amplitude voltage detector and for detecting
State the voltameter of the residual electric quantity of battery.
6. electric supply installation as claimed in claim 4, wherein, voltage follower circuit includes：
First switch, between its output for being connected to battery and the input of electronic equipment, and forms first path；
Second switch, between its output for being connected to battery and the input of booster circuit；And
The booster circuit, the supply voltage for battery to be exported is increased to predetermined voltage, output and the electricity of the booster circuit
The input connection of sub- equipment, the second switch and the booster circuit form the alternate path,
Wherein, determine that the amplitude of the supply voltage of the battery output is less than the first predetermined voltage threshold in the judgement part
When, end first switch, and turn on second switch.
7. electric supply installation as claimed in claim 4, wherein, voltage follower circuit includes：
First switch, between its output for being connected to battery and the input of electronic equipment, and forms first path；
Second switch, between its output for being connected to battery and the input of booster circuit；
The booster circuit, the supply voltage for battery to be exported is increased to predetermined voltage；And
3rd switch, it is the second switch, described between its output for being connected to the booster circuit and the input of electronic equipment
3rd switch and the booster circuit form the alternate path,
Wherein, determine that the amplitude of the supply voltage of the battery output is less than the first predetermined voltage threshold in the judgement part
When, second switch is turned on, the supply voltage that battery is exported is raised using the booster circuit, and
When the voltage stabilization of booster circuit output is in first predetermined voltage, end first switch, and turn on the
Three switches.
8. electric supply installation as claimed in claim 4, wherein,
The voltage follower circuit also includes third path, and the voltage that the third path exports battery drops via reduction voltage circuit
As little as the second predetermined voltage, and second predetermined voltage is exported to the electronic equipment；And
Whether the judgement part also judges the amplitude of the supply voltage of the battery output higher than the second predetermined voltage threshold, institute
The second predetermined voltage threshold is stated higher than first predetermined voltage threshold；
Wherein, when the judgement part determines the amplitude of the supply voltage of battery output higher than the first predetermined voltage threshold and
During less than the second predetermined voltage threshold, using the battery via the first path to the power electronic equipment；
When the judgement part determines that the amplitude of the supply voltage of the battery output is less than the first predetermined voltage threshold, utilize
The battery is via alternate path to the power electronic equipment；
When it is higher than the second predetermined voltage threshold that the judgement part determines the amplitude of the supply voltage of the battery output, utilize
The battery is via third path to the power electronic equipment.
9. a kind of electronic equipment, including：
Battery, for exporting supply voltage；
Multiple electronic devices；
Power management section, the supply voltage for being provided according to the battery is the multiple electronics；
Voltage follower circuit, is arranged between the battery and the power management section, for receiving the battery output
Supply voltage and powered to the power management section, wherein, the voltage follower circuit includes the first path and second logical
The voltage that battery is exported is directly output to the electronic equipment by road, first path, and the alternate path exports battery
Voltage be increased to the first predetermined voltage via booster circuit and export to the electronic equipment first predetermined voltage；
Detection part, the electric parameter for detecting the battery, the electric parameter of the battery includes the supply voltage of battery output
Amplitude and battery residual electric quantity；
Judgement part, for judge battery output supply voltage amplitude whether less than the first predetermined voltage threshold and
And whether the residual electric quantity of the battery is judged less than the first predetermined power threshold and higher than the second predetermined power threshold,
Wherein, using battery via the first path to power electronic equipment during, when the judgement part determine it is described
The amplitude of the supply voltage of battery output is less than first less than the residual electric quantity of the first predetermined voltage threshold and the battery
Predetermined power threshold and during higher than the second predetermined power threshold, booster circuit output voltage stabilization the first predetermined voltage it
Before be in the second working condition, second working condition from battery via first path to power electronic equipment, and
Booster circuit raises the voltage of battery output and is gradually transitions stable state；In booster circuit stabilization in the first predetermined voltage
When, the voltage that battery is exported is increased to the first predetermined voltage via alternate path and using the voltage after raising to electricity from battery
Sub- equipment is powered.
10. electronic equipment as claimed in claim 9, wherein,
The detection part includes the voltage detector of the amplitude of the supply voltage for detecting battery output and for detecting
The voltameter of the residual electric quantity of the battery.
11. electronic equipments as claimed in claim 9, wherein, voltage follower circuit includes：
First switch, between its output for being connected to battery and the input of power management section, and forms first path；
Second switch, between its output for being connected to battery and the input of booster circuit；And
The booster circuit, the supply voltage for battery to be exported is increased to predetermined voltage, output and the electricity of the booster circuit
The input connection of source control part, the second switch and the booster circuit form the alternate path,
Wherein, determine that the amplitude of the supply voltage of the battery output is less than the first predetermined voltage threshold in the judgement part
When, end first switch, and turn on second switch.
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| CN201110233436.1A CN102938569B (en) | 2011-08-15 | 2011-08-15 | To the method and apparatus and electronic equipment of power electronic equipment |
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| CN201110233436.1A CN102938569B (en) | 2011-08-15 | 2011-08-15 | To the method and apparatus and electronic equipment of power electronic equipment |
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| CN104795886A (en) * | 2014-01-16 | 2015-07-22 | 深圳富泰宏精密工业有限公司 | Power management circuit |
| CN104124731A (en) * | 2014-06-17 | 2014-10-29 | 开曼群岛威睿电通股份有限公司 | High-voltage battery power supply control circuit and high-voltage battery power supply control method |
| CN105599613B (en) * | 2014-11-19 | 2018-11-20 | 华创车电技术中心股份有限公司 | The control method of solar energy auxiliary power supply system for automobile |
| CN105429279B (en) * | 2015-12-23 | 2018-06-26 | 浙江华飞智能科技有限公司 | A kind of electric power system of electrical equipment and its method being powered |
| CN107783580A (en) * | 2016-08-26 | 2018-03-09 | 中兴通讯股份有限公司 | A kind of power supply power-supplying circuit and the method being powered using control circuit |
| CN108983934B (en) * | 2018-06-29 | 2021-11-16 | 联想(北京)有限公司 | Electronic device and control method for electronic device |
| CN109378868B (en) * | 2018-09-14 | 2021-05-14 | Oppo广东移动通信有限公司 | Electronic equipment power supply circuit and electronic equipment |
| CN109240476B (en) * | 2018-09-18 | 2024-04-19 | 合肥联宝信息技术有限公司 | Battery power supply method, circuit and electronic equipment |
| CN112311081A (en) * | 2019-07-31 | 2021-02-02 | 北京君正集成电路股份有限公司 | Method for preventing intelligent sound box from suddenly powering down |
| CN112311036A (en) * | 2019-07-31 | 2021-02-02 | 北京君正集成电路股份有限公司 | Over-discharge prevention protection device of electronic product with PMU |
| CN112311082A (en) * | 2019-07-31 | 2021-02-02 | 北京君正集成电路股份有限公司 | Protection system for sudden power failure of intelligent sound box |
| CN110601294B (en) * | 2019-09-18 | 2021-10-29 | 重庆京东方智慧电子系统有限公司 | Electronic tag and monitoring method, device and system thereof |
| CN112018863B (en) * | 2020-08-31 | 2023-02-14 | 广州极飞科技股份有限公司 | Power supply adjusting circuit and power supply device |
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