CN106505698A - Method of supplying power to and electric supply installation - Google Patents
Method of supplying power to and electric supply installation Download PDFInfo
- Publication number
- CN106505698A CN106505698A CN201710001738.3A CN201710001738A CN106505698A CN 106505698 A CN106505698 A CN 106505698A CN 201710001738 A CN201710001738 A CN 201710001738A CN 106505698 A CN106505698 A CN 106505698A
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- Prior art keywords
- voltage
- tension battery
- mobile terminal
- electricity
- power source
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
Abstract
The invention discloses a kind of method of supplying power to and electric supply installation, belong to charging technique field.The electric supply installation includes：The input of high-tension battery, DC D/C powers conversion chip and PMIC, DC D/C power conversion chip is connected with the outfan of high-tension battery, and the outfan of DC D/C power conversion chips is connected with the input of PMIC；DC D/C powers conversion chip is used for for the voltage that high-tension battery is exported being reduced to target voltage；PMIC is used for each electricity consumption module for power supply in the presence of target voltage to mobile terminal；High-tension battery is also electrically connected with mobile terminal peripheral hardware, for powering to mobile terminal peripheral hardware.The present invention solves the need for electricity that low tension battery cannot meet mobile terminal peripheral hardware and mobile terminal, the poor problem of the reliability of power supply, it is achieved that improve the effect of the reliability of power supply, for mobile terminal.
Description
Technical field
The present invention relates to charging technique field, more particularly to a kind of method of supplying power to and electric supply installation.
Background technology
With the fast development of network technology, user is increasing to the demand of network, and increasing equipment needs base
In mobile-terminal platform access network.Carry equipment on mobile terminals is referred to as mobile terminal peripheral hardware.Mobile whole in order to ensure
End peripheral hardware and mobile terminal normal work, corresponding power supply technique receive extensive concern.
Correlation technique is mainly powered to mobile terminal peripheral hardware and mobile terminal by the built-in battery of mobile terminal.Its
In, battery is (English with mobile terminal peripheral hardware and power management integrated circuit respectively：Power Management integrated
circuit；Referred to as：PMIC) connect, PMIC is electrically connected with each electricity consumption module of mobile terminal, PMIC is used for battery output
Voltage conversion is the voltage of each electricity consumption module coupling.
As the built-in battery of mobile terminal is low tension battery (i.e. less than 4.5 volts of batteries), low tension battery is carried
Electricity is very limited amount of, so when the power consumption of mobile terminal peripheral hardware is larger, low tension battery cannot be met outside mobile terminal
If the need for electricity with mobile terminal, therefore, the reliability of power supply is poor.
Content of the invention
The need for electricity of mobile terminal peripheral hardware and mobile terminal cannot be met to solve correlation technique mesolow battery, supplied
The poor problem of electric reliability, the invention provides a kind of method of supplying power to and electric supply installation.The technical scheme is as follows：
First aspect, there is provided a kind of electric supply installation, described device include：High-tension battery, DC-DC DC-DC power source
Conversion chip and power management integrated circuit PMIC,
The input of the DC-DC power source conversion chip is connected with the outfan of the high-tension battery, the DC-DC power source
The outfan of conversion chip is connected with the input of the PMIC；
The DC-DC power source conversion chip is used for for the voltage that the high-tension battery is exported being reduced to target voltage, described
Target voltage is the voltage that the PMIC allows to pass through；
The PMIC is used for each electricity consumption module for power supply in the presence of the target voltage to mobile terminal；
The high-tension battery is also electrically connected with mobile terminal peripheral hardware, for powering to the mobile terminal peripheral hardware.
Optionally, described device also includes voltage comparator,
The input of the voltage comparator is connected with the outfan of the high-tension battery, the output of the voltage comparator
End is connected with the Enable Pin of the DC-DC power source conversion chip；
The voltage comparator is used in pre-charging stage, when the voltage of high-tension battery output is less than preset reference electricity
During pressure, control the DC-DC power source conversion chip and close, and when the voltage of high-tension battery output reaches the preset reference
During voltage, control the DC-DC power source conversion chip and open.
Optionally, described device also includes resistor voltage divider circuit,
The resistor voltage divider circuit is electrically connected with the high-tension battery and analog-digital converter ADC respectively, the electric resistance partial pressure
Circuit is used for for the voltage of the high-tension battery currently output carrying out voltage division processing, obtains branch pressure voltage；
The ADC is used for the voltage for calculating the high-tension battery currently output according to the branch pressure voltage, and according to default
Voltage and electricity corresponding relation and the voltage of calculating, obtain the electricity of the high-tension battery.
Optionally, the resistor voltage divider circuit includes：First resistor and second resistance, one end of the first resistor and institute
The input connection of high-tension battery is stated, the other end is connected with the input of the ADC and one end of the second resistance respectively, institute
State the other end ground connection of second resistance.
Optionally, the voltage of the high-tension battery output is 8.4 volts；
The target voltage is 4 volts.
A kind of second aspect, there is provided method of supplying power to, for the electric supply installation described in first aspect, methods described includes：
The voltage that high-tension battery is exported is reduced to target voltage by DC-DC DC-DC power source conversion chip, the mesh
Mark voltage is the voltage that power management integrated circuit PMIC allows to pass through；
Each electricity consumption module for power supply of the PMIC in the presence of the target voltage to the mobile terminal；
The high-tension battery is powered to mobile terminal peripheral hardware.
Optionally, methods described also includes：
Voltage comparator is in pre-charging stage, when the voltage of high-tension battery output is less than predetermined reference voltage, control
Make the DC-DC power source conversion chip to close, and when the voltage of high-tension battery output reaches the predetermined reference voltage,
Control the DC-DC power source conversion chip to open.
Optionally, methods described also includes：
The voltage of the high-tension battery currently output is carried out voltage division processing by resistor voltage divider circuit, obtains branch pressure voltage；
Analog-digital converter ADC calculates the voltage of the high-tension battery currently output according to the branch pressure voltage, and according to pre-
If voltage and electricity corresponding relation and the voltage of calculating, obtain the electricity of the high-tension battery.
Optionally, the resistor voltage divider circuit includes：First resistor and second resistance, one end of the first resistor and institute
The input connection of high-tension battery is stated, the other end is connected with the input of the ADC and one end of the second resistance respectively, institute
The other end ground connection of second resistance is stated,
The ADC calculates the voltage of the high-tension battery currently output according to the branch pressure voltage, including：
The ADC calculates the voltage of the high-tension battery currently output according to the branch pressure voltage and voltage computing formula,
The voltage computing formula is：
V1=(R1+R2) * V2/R2；
Wherein, the V1 is the voltage of the high-tension battery currently output, and the R1 is the resistance of the first resistor, institute
The resistance that R2 is the second resistance is stated, the V2 is the branch pressure voltage.
Optionally, the voltage of the high-tension battery output is 8.4 volts；
The target voltage is 4 volts.
The invention provides a kind of method of supplying power to and electric supply installation, are powered for mobile terminal peripheral hardware by high-tension battery, lead to
Cross DC-DC power source conversion chip and the voltage that high-tension battery is exported is reduced to target voltage, the target voltage is that PMIC allows to lead to
The voltage that crosses, so that PMIC gives mobile terminal each electricity consumption module for power supply, disclosure satisfy that mobile terminal peripheral hardware and mobile terminal
Need for electricity, improves the reliability of power supply.
It should be appreciated that above general description and detailed description hereinafter are only exemplary and explanatory, not
The present invention can be limited.
Description of the drawings
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to making needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, can be obtaining other according to these accompanying drawings
Accompanying drawing.
Fig. 1-1 shows a kind of structural representation of electric supply installation in correlation technique；
Fig. 1-2 is a kind of structural representation of electric supply installation provided in an embodiment of the present invention；
Fig. 2 is the structural representation of another kind of electric supply installation provided in an embodiment of the present invention；
Fig. 3 is the structural representation of another electric supply installation provided in an embodiment of the present invention；
Fig. 4 is a kind of method flow diagram of method of supplying power to provided in an embodiment of the present invention；
Fig. 5 is the method flow diagram of another kind of method of supplying power to provided in an embodiment of the present invention.
By above-mentioned accompanying drawing, it has been shown that the present invention clearly embodiment, will hereinafter be described in more detail.These accompanying drawings
Be not intended to scope that present inventive concept is limited by any mode with word description, but by reference to specific embodiment be
Those skilled in the art illustrate idea of the invention.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1-1 shows a kind of structural representation of electric supply installation in correlation technique.As Figure 1-1, the electric supply installation
Including PMIC001 and battery 002.Battery 002 is electrically connected with PMIC001.PMIC001 is used for entering the voltage that battery 002 is exported
Row is processed, to each electricity consumption module for power supply of mobile terminal.The positive pole ("+" in Fig. 1-1 represents positive pole) of battery 002 and PMIC
001 supply input pin (i.e. VPH_PWR) connection.The negative pole ("-" in Fig. 1-1 represents negative pole) of battery 002 and PMIC001
Grounding pin (i.e. GND) ground connection.
Battery 002 is usually less than 4.5 volts of low tension battery.It is 3 volts～5 that PMIC 001 allows the scope of the voltage for passing through
Volt.When the voltage of input to PMIC 001 is more than 5 volts, PMIC 001 can be burned.And current increasing mobile terminal
Carry mobile terminal peripheral hardware is needed, such as the point of sale of movement, both needed to have communication function, and needed carry printer again.Print
The power consumption of machine is larger, so needing the need for electricity for meeting printer and mobile point of sale using high-tension battery, it is clear that
Electric supply installation shown in Fig. 1-1 cannot meet this need for electricity.Wherein, mobile point of sale is also referred to as hand-held point of sale (English：
Point of sales；Referred to as：POS) machine.
A kind of electric supply installation is embodiments provided, as shown in Figure 1-2, the electric supply installation includes：High-tension battery
110th, DC-DC (English：Direct Current-Direct Current；Referred to as：DC-DC) DC-DC power source conversion core
Piece 120 and PMIC130.
The electric supply installation can apply to arbitrary shifting such as mobile phone, panel computer, pocket computer on knee and handheld POS machine
Dynamic terminal.The embodiment of the present invention is illustrated to the electric supply installation by taking mobile phone as an example.
Wherein, the input of DC-DC power source conversion chip 120 is connected with the outfan of high-tension battery 110, DC-DC power source
The outfan of conversion chip 120 is connected with the input of PMIC130.
DC-DC power source conversion chip 120 is used for for the voltage that high-tension battery 110 is exported being reduced to target voltage, the target
Voltage allows the voltage for passing through for PMIC130.
Wherein, the voltage of high-tension battery output can be 8.4 volts.The target voltage of DC-DC power source conversion chip adjustment can
Think 4 volts.Battery generally using output voltage more than 5 volts is used as high-tension battery.
PMIC130 is used for each electricity consumption module for power supply in the presence of the target voltage to mobile terminal.
High-tension battery 110 is also electrically connected with mobile terminal peripheral hardware (being not drawn in Fig. 1-2), for supplying to mobile terminal peripheral hardware
Electricity.
Referring to Fig. 1-2, the positive pole of high-tension battery 110 is connected with the input pin (i.e. IN) of DC-DC power source conversion chip 120
Connect, the output pin (i.e. OUT) of DC-DC power source conversion chip 120 is connected with the supply input pin (i.e. VPH_PWR) of PMIC130
Connect.The negative pole of high-tension battery 110, the grounding pin (i.e. GND) of DC-DC power source conversion chip 120 and the grounding pin of PMIC130
(i.e. GND) is grounded.DC-DC power source conversion chip 120 is additionally provided with enable pin CE, and enable pin CE is used as DC-DC electricity
The Enable Pin of source conversion chip, is turned on and off for control DC-DC power source conversion chip in the presence of outer signals.High pressure
The voltage of the output of battery 110 is 8.4 volts.
In the present embodiment, the high voltage that high-tension battery can be exported by the DC-DC power source conversion chip in electric supply installation is (such as
More than 5 volts of voltage) it is reduced to stable 4 volt voltage so that and PMIC can give each electricity consumption module for power supply of mobile phone.Simultaneously high
Piezoelectric battery can also be powered to mobile phone peripheral hardware, meet the need for electricity of mobile phone peripheral hardware.So the electric supply installation disclosure satisfy that mobile phone
Peripheral hardware and the need for electricity of mobile phone.
In sum, electric supply installation provided in an embodiment of the present invention, is powered for mobile terminal peripheral hardware by high-tension battery, is led to
Cross DC-DC power source conversion chip and the voltage that high-tension battery is exported is reduced to target voltage, the target voltage is that PMIC allows to lead to
The voltage that crosses, so that PMIC gives mobile terminal each electricity consumption module for power supply, disclosure satisfy that mobile terminal peripheral hardware and mobile terminal
Need for electricity, improves the reliability of power supply.
Another kind of electric supply installation is embodiments provided, as shown in Fig. 2 the electric supply installation includes：High-tension battery
110th, DC-DC power source conversion chip 120, PMIC130 and voltage comparator 140.
The input of DC-DC power source conversion chip 120 is connected with the outfan of high-tension battery 110, DC-DC power source conversion core
The outfan of piece 120 is connected with the input of PMIC130.
DC-DC power source conversion chip 120 is used for for the voltage that high-tension battery 110 is exported being reduced to target voltage, the target
Voltage allows the voltage for passing through for PMIC130.The voltage of high-tension battery output can be 8.4 volts.DC-DC power source conversion chip is adjusted
Whole target voltage is 4 volts.
PMIC130 is used in the presence of the target voltage of the adjustment of DC-DC power source conversion chip 120 to each of mobile terminal
Individual electricity consumption module for power supply.
High-tension battery 110 is also electrically connected with mobile terminal peripheral hardware (being not drawn in Fig. 2), for supplying to mobile terminal peripheral hardware
Electricity.
The input of voltage comparator 140 is connected with the outfan of high-tension battery 110, the outfan of voltage comparator 140
It is connected with the Enable Pin of DC-DC power source conversion chip 120.
Voltage comparator 140 is used in pre-charging stage, when the voltage of the output of high-tension battery 110 is less than predetermined reference voltage
When, control DC-DC power source conversion chip 120 is closed, and when the voltage of the output of high-tension battery 110 reaches predetermined reference voltage,
Control DC-DC power source conversion chip 120 is opened.
In correlation technique, the charging process of the battery of mobile phone includes three phases：Pre-charging stage, constant-current charging phase and
Constant voltage charging phase.In pre-charging stage, the voltage very little of battery.In order to protect battery, the electric current very little of pre-charging stage；
In constant-current charging phase, electric current increases and keeps constant, and voltage increases；In constant voltage charging phase, current reduction, voltage increase
And keep constant.
Referring to Fig. 1-2, the startup voltage of usual PMIC130 is 3 volts, in order that mobile phone starts when charging, need to only give
PMIC130 provides the voltage more than 3 volts.After assuming handset starting, the electric current of cell phone system power consumption is A milliamperes.High-tension battery
110, when voltage is down to 5 volts, are charged by charger, and the charging stage is pre-charging stage.Now, it is input into high-tension battery
Electric current very little.In pre-charging stage, DC-DC power source conversion chip 120 can export 4 volts of voltage to PMIC130, and mobile phone can
To start.Now, the electric current of charger output will also be powered to cell phone system except powering to high-tension battery, so existing
Charge and power consumption phenomenon.The rated current of hypothesis charger is B milliamperes, when power consumption and precharge are carried out simultaneously, precharge
Electric current is greater than the electric current of power consumption and just can guarantee that precharge is normally carried out, namely works as A>During B or A=B, precharge normally cannot be entered
OK.But work as A<During B, due to the electric current also very little of input to high-tension battery, so the time of precharge can be made longer.
In order to solve the problems, such as high-tension battery in pre-charging stage, referring to Fig. 2, the electric supply installation of the embodiment of the present invention
Also include voltage comparator 140.In pre-charging stage, when the voltage of the output of high-tension battery 110 is less than predetermined reference voltage, electricity
The pressure control DC-DC power source conversion of comparator 140 chip 120 is closed, and when the voltage of the output of high-tension battery 110 reaches preset reference
During voltage, the control DC-DC power source conversion of voltage comparator 140 chip 120 is opened.Due to the voltage exported in high-tension battery 110
During less than predetermined reference voltage, DC-DC power source conversion chip 120 is closed, so mobile terminal will not start, so
One, the electric current of charger output fully enters high-tension battery 110, powers to high-tension battery 110.As time goes on, high
The voltage of the output of piezoelectric battery 110 reaches predetermined reference voltage, and DC-DC power source conversion chip 120 is opened, handset starting, but will not
Charging process is affected, because now having been enter into constant-current charging phase, the electric current that constant-current charging phase charges is much larger than the electricity of power consumption
Stream, it is to avoid high-tension battery 110 cannot be normally carried out the problem being pre-charged.DC-DC power source conversion core in the embodiment of the present invention
Piece can in the presence of voltage comparator, according to high-tension battery output voltage turn off or on, solve high-tension battery without
Method is normally carried out the problem being pre-charged.
As shown in Fig. 2 the input pin (i.e. IN) of voltage comparator 140 is connected with the positive pole of high-tension battery 110, voltage ratio
It is connected with the enable pin (i.e. CE) of DC-DC power source conversion chip 120 compared with the output pin (i.e. OUT) of device 140.Voltage comparator
140 another input pin input predetermined reference voltage.Example, the predetermined reference voltage can be 6V.Voltage comparator 140
In pre-charging stage, when the voltage of the output of high-tension battery 110 is less than 6V, control DC-DC power source conversion chip 120 is closed, when
When the voltage of the output of high-tension battery 110 reaches 6V, control DC-DC power source conversion chip 120 is opened.
In Fig. 2, remaining pin explanation may be referred to Fig. 1-2, will not be described here.
Further, in correlation technique, the electricity and voltage of battery are one-to-one relations, namely each voltage is corresponding
One electricity.In order to obtain the electricity of battery, it usually needs first obtain the voltage of battery, then inquire about discharge curve to calculate electricity
The electricity in pond.So, in order to obtain the electricity of battery, need the voltage for first obtaining battery.The abscissa of discharge curve is the time,
Vertical coordinate is voltage.Correlation technique be may be referred to regard to inquiring about the process of the electricity that discharge curve calculates battery, here is no longer gone to live in the household of one's in-laws on getting married
State.Analog-digital converter (English is generally provided with mobile phone：analog to digital converter；Referred to as：ADC), should
ADC is connected with the positive pole of battery, for calculating the voltage of battery.But typically smaller than 5 volts of the voltage of ADC work, and due to height
The voltage of piezoelectric battery output is more than 5 volts, so, ADC cannot be directly connected to high-tension battery.In order to solve this problem, such as Fig. 3
Shown, the electric supply installation in the embodiment of the present invention can also include：Resistor voltage divider circuit 150.
Resistor voltage divider circuit 150 is electrically connected with high-tension battery 110 and ADC160 respectively.ADC160 is used for calculating high-tension battery
110 electricity.
Resistor voltage divider circuit 150 is used for for the voltage of 110 current output of high-tension battery carrying out voltage division processing, obtains partial pressure electricity
Pressure.ADC150 is used for the voltage for calculating 110 current output of high-tension battery according to the branch pressure voltage, and according to default voltage and electricity
The corresponding relation of amount and the voltage of calculating, obtain the electricity of high-tension battery 110.Wherein, the corresponding relation of voltage and electricity can be with
Obtained according to the discharge curve in correlation technique.
Specifically, the branch pressure voltage and voltage computing formula that ADC is obtained according to resistor voltage divider circuit calculates high-tension battery and works as
The voltage of front output, the voltage computing formula is：
V1=(R1+R2) * V2/R2；
Wherein, V1 is the voltage of high-tension battery currently output, and resistances of the R1 for first resistor, R2 are the resistance of second resistance
Value, V2 is branch pressure voltage.
As the resistor voltage divider circuit has carried out voltage division processing to the voltage of the current output of high-tension battery so that ADC can
Normal work, and then enable ADC accurately to calculate the electricity of high-tension battery.
Optionally, resistor voltage divider circuit includes：First resistor and second resistance.One end of first resistor and high-tension battery
Input connects, and the other end is connected with the input of ADC and one end of second resistance respectively.The other end ground connection of second resistance.
As shown in figure 3, resistor voltage divider circuit 150 includes：First resistor 151 and second resistance 152.First resistor 151
One end is connected with the positive pole of high-tension battery 110, the other end of first resistor 151 input pin (i.e. ADC_ respectively with ADC160
PIN) and second resistance 152 one end connection.The other end ground connection (representing ground connection with " GND " in Fig. 3) of second resistance 152.
ADC160 reads the branch pressure voltage (V2 in i.e. above-mentioned voltage computing formula) on input pin (i.e. ADC_PIN), according to above-mentioned
Voltage computing formula obtains the voltage of 110 current output of high-tension battery.Then according to the voltage, and default voltage and electricity
Corresponding relation, obtain the electricity of high-tension battery 110.
In Fig. 3, remaining pin explanation may be referred to Fig. 2, will not be described here.
High-tension battery can be exported by electric supply installation provided in an embodiment of the present invention due to DC-DC power source conversion chip
Voltage is reduced to target voltage, and the target voltage allows the voltage for passing through for PMIC so that PMIC can be in the target voltage
Under effect to mobile terminal each electricity consumption module for power supply, and high-tension battery can power to mobile terminal peripheral hardware, so the confession
Electric installation disclosure satisfy that the need for electricity of mobile terminal and greater number of mobile terminal peripheral hardware, meet the use of mobile terminal peripheral hardware
Electric demand；Due to voltage comparator can in pre-charging stage, when the voltage of high-tension battery output is less than predetermined reference voltage,
Control DC-DC power source conversion chip is closed, and when the voltage of high-tension battery output reaches predetermined reference voltage, controls DC-DC
Power conversion chip is opened, so the electric supply installation can be normally carried out being pre-charged, and then can complete charging process；Due to electricity
The voltage of high-tension battery currently output can be carried out voltage division processing by resistance bleeder circuit, obtain branch pressure voltage so that ADC being capable of root
According to the electricity that the branch pressure voltage obtains high-tension battery.Compared to correlation technique, the confession of electric supply installation provided in an embodiment of the present invention
Electric reliability is higher, and can complete charging process, and accurately obtains the electricity of high-tension battery.
In sum, electric supply installation provided in an embodiment of the present invention, is powered for mobile terminal peripheral hardware by high-tension battery, is led to
Cross DC-DC power source conversion chip and the voltage that high-tension battery is exported is reduced to target voltage, the target voltage is that PMIC allows to lead to
The voltage that crosses, so that PMIC gives mobile terminal each electricity consumption module for power supply, disclosure satisfy that mobile terminal peripheral hardware and mobile terminal
Need for electricity, improves the reliability of power supply, while also solve high-tension battery cannot be normally carried out being pre-charged, and ADC without
Method accurately obtains the problem of the electricity of high-tension battery.
A kind of method of supplying power to is embodiments provided, for the arbitrary described electric supply installation of Fig. 1-2, Fig. 2 and Fig. 3,
As shown in figure 4, the method for supplying power to includes：
The voltage that high-tension battery is exported is reduced to target voltage by step 401, DC-DC power source conversion chip, the target electricity
Press the voltage for passing through is allowed for PMIC.
Each electricity consumption module for power supply of step 402, PMIC in the presence of target voltage to mobile terminal.
Step 403, high-tension battery are powered to mobile terminal peripheral hardware.
In sum, method of supplying power to provided in an embodiment of the present invention, is powered for mobile terminal peripheral hardware by high-tension battery, is led to
Cross DC-DC power source conversion chip and the voltage that high-tension battery is exported is reduced to target voltage, the target voltage is that PMIC allows to lead to
The voltage that crosses so that PMIC gives mobile terminal each electricity consumption module for power supply, the method for supplying power to disclosure satisfy that mobile terminal peripheral hardware and
The need for electricity of mobile terminal, improves the reliability of power supply.
Another kind of method of supplying power to is embodiments provided, as shown in figure 5, the method for supplying power to can include：
The voltage that high-tension battery is exported is reduced to target voltage by step 501, DC-DC power source conversion chip, the target electricity
Press the voltage for passing through is allowed for PMIC.
It is arbitrary mobile whole that the method can apply to mobile phone, panel computer, pocket computer on knee and handheld POS machine etc.
End.
Referring to Fig. 3, the voltage that high-tension battery 110 is exported is reduced to PMIC130 permissions by DC-DC power source conversion chip 120
The voltage for passing through.
Each electricity consumption module for power supply of step 502, PMIC in the presence of the target voltage to mobile terminal.
Referring to Fig. 3, PMIC130 gives mobile terminal in the presence of the target voltage that DC-DC power source conversion chip 120 is adjusted
Each electricity consumption module for power supply.
Step 503, high-tension battery are powered to mobile terminal peripheral hardware.
As PMIC can give each electricity consumption module for power supply of mobile terminal, while high-tension battery can be with mobile terminal peripheral hardware
Power supply, so the electric supply installation disclosure satisfy that the need for electricity of mobile terminal peripheral hardware and mobile terminal.
Step 504, voltage comparator in pre-charging stage, when the voltage of high-tension battery output is less than predetermined reference voltage
When, control DC-DC power source conversion chip is closed, and when the voltage of high-tension battery output reaches predetermined reference voltage, controls DC-
D/C power conversion chip is opened.
Referring to Fig. 3, voltage comparator 140 in pre-charging stage, when the voltage of the output of high-tension battery 110 is less than preset reference
During voltage, control DC-DC power source conversion chip 120 is closed, and when the voltage of the output of high-tension battery 110 reaches predetermined reference voltage
When, control DC-DC power source conversion chip 120 is opened.
DC-DC power source conversion chip can be in the presence of voltage comparator, and the voltage according to high-tension battery output is closed
Or open, solve the problems, such as that high-tension battery cannot be normally carried out precharge.
The voltage of high-tension battery currently output is carried out voltage division processing by step 505, resistor voltage divider circuit, obtains partial pressure electricity
Pressure.
Due to high-tension battery output voltage larger, and ADC work voltage less, so ADC cannot be with high-tension battery
It is directly connected to, and then cannot also obtains the voltage of high-tension battery currently output.In the embodiment of the present invention, resistor voltage divider circuit can be with
The voltage of high-tension battery currently output is carried out voltage division processing, branch pressure voltage is obtained, so, ADC can be according to partial pressure electricity
Pressure calculates the voltage of high-tension battery currently output, further according to the electricity that the voltage for calculating determines high-tension battery.
Optionally, resistor voltage divider circuit includes：First resistor and second resistance.Wherein, one end of first resistor and high pressure
The input connection of battery, the other end are connected with the input of ADC and one end of second resistance respectively.The other end of second resistance
Ground connection.
Specifically, step 505 can include：
ADC calculates the voltage of high-tension battery currently output according to branch pressure voltage and voltage computing formula.The voltage calculates public
Formula is：
V1=(R1+R2) * V2/R2；
Wherein, V1 is the voltage of high-tension battery currently output, and resistances of the R1 for first resistor, R2 are the resistance of second resistance
Value, V2 is branch pressure voltage.
Step 506, ADC calculate the voltage of high-tension battery currently output according to branch pressure voltage, and according to default voltage with
The corresponding relation of electricity and the voltage of calculating, obtain the electricity of high-tension battery.
Referring to Fig. 3, ADC160 reads branch pressure voltage (the i.e. above-mentioned voltage computing formula on input pin (i.e. ADC_PIN)
In V2), according to the voltage that above-mentioned voltage computing formula obtains 110 current output of high-tension battery.Then according to the voltage, and
Default voltage and the corresponding relation of electricity, obtain the electricity of high-tension battery 110.
It should be noted that sequencing the step of method of supplying power to provided in an embodiment of the present invention suitably can be adjusted
Whole, step according to circumstances accordingly can also be increased and decreased.Any those familiar with the art the invention discloses
In technical scope, the method that can readily occur in change should all be included within the scope of the present invention, therefore repeat no more.
In sum, method of supplying power to provided in an embodiment of the present invention, is powered for mobile terminal peripheral hardware by high-tension battery, is led to
Cross DC-DC power source conversion chip and the voltage that high-tension battery is exported is reduced to target voltage, the target voltage is that PMIC allows to lead to
The voltage that crosses so that PMIC gives mobile terminal each electricity consumption module for power supply, the method for supplying power to disclosure satisfy that mobile terminal peripheral hardware and
The need for electricity of mobile terminal, improves the reliability of power supply, while also solve high-tension battery cannot be normally carried out being pre-charged,
And ADC cannot accurately obtain the problem of the electricity of high-tension battery.
Those skilled in the art can be understood that, for convenience and simplicity of description, the method for foregoing description
Detailed process in embodiment, may be referred to the specific work process of aforementioned means and module, will not be described here.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvements that is made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of electric supply installation, it is characterised in that described device includes：High-tension battery, DC-DC DC-DC power source conversion core
Piece and power management integrated circuit PMIC,
The input of the DC-DC power source conversion chip is connected with the outfan of the high-tension battery, the DC-DC power source conversion
The outfan of chip is connected with the input of the PMIC；
The DC-DC power source conversion chip is used for for the voltage that the high-tension battery is exported being reduced to target voltage, the target
Voltage is the voltage that the PMIC allows to pass through；
The PMIC is used for each electricity consumption module for power supply in the presence of the target voltage to mobile terminal；
The high-tension battery is also electrically connected with mobile terminal peripheral hardware, for powering to the mobile terminal peripheral hardware.
2. device according to claim 1, it is characterised in that described device also includes voltage comparator,
The input of the voltage comparator is connected with the outfan of the high-tension battery, the outfan of the voltage comparator with
The Enable Pin connection of the DC-DC power source conversion chip；
The voltage comparator is used in pre-charging stage, when the voltage of high-tension battery output is less than predetermined reference voltage
When, control the DC-DC power source conversion chip and close, and when the voltage of high-tension battery output reaches the preset reference electricity
During pressure, control the DC-DC power source conversion chip and open.
3. device according to claim 2, it is characterised in that described device also includes resistor voltage divider circuit,
The resistor voltage divider circuit is electrically connected with the high-tension battery and analog-digital converter ADC respectively, the resistor voltage divider circuit
For the voltage of the high-tension battery currently output is carried out voltage division processing, branch pressure voltage is obtained；
The ADC is used for the voltage for calculating the high-tension battery currently output according to the branch pressure voltage, and according to default electricity
Pressure and the corresponding relation and the voltage of calculating of electricity, obtain the electricity of the high-tension battery.
4. device according to claim 3, it is characterised in that the resistor voltage divider circuit includes：First resistor and second
Resistance, one end of the first resistor are connected with the input of the high-tension battery, other end input respectively with the ADC
Connect with one end of the second resistance, the other end ground connection of the second resistance.
5. according to the arbitrary described device of Claims 1-4, it is characterised in that
The voltage of the high-tension battery output is 8.4 volts；
The target voltage is 4 volts.
6. a kind of method of supplying power to, it is characterised in that for the arbitrary described electric supply installation of claim 1 to 5, methods described bag
Include：
The voltage that high-tension battery is exported is reduced to target voltage by DC-DC DC-DC power source conversion chip, the target electricity
Press the voltage for passing through is allowed for power management integrated circuit PMIC；
Each electricity consumption module for power supply of the PMIC in the presence of the target voltage to the mobile terminal；
The high-tension battery is powered to mobile terminal peripheral hardware.
7. method according to claim 6, it is characterised in that methods described also includes：
Voltage comparator controls institute in pre-charging stage when the voltage of high-tension battery output is less than predetermined reference voltage
The closing of DC-DC power source conversion chip is stated, and when the voltage of high-tension battery output reaches the predetermined reference voltage, control
The DC-DC power source conversion chip is opened.
8. method according to claim 7, it is characterised in that methods described also includes：
The voltage of the high-tension battery currently output is carried out voltage division processing by resistor voltage divider circuit, obtains branch pressure voltage；
Analog-digital converter ADC calculates the voltage of the high-tension battery currently output according to the branch pressure voltage, and according to default
Voltage and the corresponding relation and the voltage of calculating of electricity, obtain the electricity of the high-tension battery.
9. method according to claim 8, it is characterised in that the resistor voltage divider circuit includes：First resistor and second
Resistance, one end of the first resistor are connected with the input of the high-tension battery, other end input respectively with the ADC
Connect with one end of the second resistance, the other end ground connection of the second resistance,
The ADC calculates the voltage of the high-tension battery currently output according to the branch pressure voltage, including：
The ADC calculates the voltage of the high-tension battery currently output according to the branch pressure voltage and voltage computing formula,
The voltage computing formula is：
V1=(R1+R2) * V2/R2；
Wherein, the V1 is the voltage of the high-tension battery currently output, and the R1 is the resistance of the first resistor, the R2
For the resistance of the second resistance, the V2 is the branch pressure voltage.
10. according to the arbitrary described method of claim 6 to 9, it is characterised in that
The voltage of the high-tension battery output is 8.4 volts；
The target voltage is 4 volts.
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| CN106505698B (en) | 2020-08-14 |
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Address after: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee after: Qingdao Hisense Mobile Communication Technology Co.,Ltd. Address before: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee before: HISENSE MOBILE COMMUNICATIONS TECHNOLOGY Co.,Ltd. |