CN105990893A - Power supply method, device and terminal - Google Patents
Power supply method, device and terminal Download PDFInfo
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- CN105990893A CN105990893A CN201510079237.8A CN201510079237A CN105990893A CN 105990893 A CN105990893 A CN 105990893A CN 201510079237 A CN201510079237 A CN 201510079237A CN 105990893 A CN105990893 A CN 105990893A
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- power supply
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a power supply method, a device and a terminal. The method comprises steps: voltage of a power supply battery in the terminal and voltage of an external power supply connected with the terminal are determined, wherein the terminal is provided with a dynamic path management (DPM) charging circuit; and according to the determined voltage of the power supply battery and the voltage of the external power supply, on and off of a first circuit between a load in the terminal and a system power output end and on and off of a second circuit between the load and a battery charging output end are controlled, wherein the working voltage of the load is smaller than the highest voltage of the power supply battery, the system power output end is a port by using the external power supply for providing power for the load, and the battery charging output end is a port by using the power supply battery for providing power for the load; and the power supply battery, the external power supply, the first circuit after control and the second circuit after control are used for providing power for the load. Thus, problems of circuit complexity and high thermal loss existing in a related technology can be solved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of method of supplying power to, device and terminal.
Background technology
Along with the development of technology, people, to requiring more and more higher with battery powered terminal experience, wherein just wrap
Including the terminal more miniaturization that hope is held, cost is lower, and flying power is longer, generates heat lower, uses the longevity
Order longer, and other various experience performances are become better and better.In order to improve original terminal charge scheme, at battery
The major defect that adapter cannot be started shooting at once, the existing substantially all employing of terminal charge scheme is inserted in the case of power shortage
With dynamic route management function (Dynamic Path Management, referred to as DPM)) charging scheme.
So-called DPM function charging scheme, refers to that this charging chip (or circuit) can be to charging output and system
Power supply exports the output of this two-way and individually manages, and it has following two significant properties:
(1) when inserting external adapter, even if during battery power shortage (generally below 3V), its system power supply
Output end voltage can maintain system and normally start required voltage (usually 3.4V or 3.6V),
In the case of battery power shortage, plug in adapter cannot without DPM function charging scheme terminal so can to solve tradition
The defect started.
(2) when inserting external adapter, if load is connected on the system electricity of charging chip (or circuit)
Source output terminal, load is preferential from this path obtaining current of external adapter to system power supply outfan, if load
Required electric current is more than charging chip (or circuit) cut-off current, and battery meeting automatic discharging, supplemental current gives load.
If load current is less than charging chip (or circuit) cut-off current, the most unnecessary electric current can charge the battery,
Discharge scenario would not be there is in battery.For this charging scheme is compared without DPM function charging scheme, electricity
Pond does not haves repeated charge situation (battery life can be caused serious injury by repeated charge).
But in spite of the charging scheme with DPM function, i.e. will be filled with at battery or fill with situation
Under, if still inserting external adapter, its system out-put supply terminal voltage is always full of voltage than cell voltage
Want high (typically wanting high 100～200mV), and this voltage usually has been out the electricity that some supported chip is allowed
Pressure specification limit, if being added in this load the system power supply outfan of this charging chip, in order to prevent high pressure pair
The damage that supported chip causes is it is necessary to the most additionally increase some reduction voltage circuits and process, and this obviously can increase electricity
The complexity on road, Material Cost, but also extra thermal losses can be brought.
As a example by below to the mobile terminal used with DPM function charging scheme, to two kinds of power supply plans of tradition
Pluses and minuses are analyzed:
Mobile terminal load from its power supply specification limit points two kinds, one be can bear higher than battery full voltage
Load, referred to herein as load 1；A kind of is the load that normally can only work within battery full voltage scope,
Referred to herein as load 2.The first tradition power supply plan is as it is shown in figure 1, Fig. 1 is the first of correlation technique
The structured flowchart of tradition power supply, is connected on the load 1 that can bear higher voltage scope the system electricity of charging circuit
Source output terminal, is connected on the load that can only work within battery full voltage scope the charging outfan of charging circuit,
I.e. battery-end.This resolution circuitry is simple, and power supply path power consumption is the lowest.But the defect existed is exactly,
When user inserts the use of charging limit, adapter limit, load 2 designs and battery can be caused to be in repeated charge work
Pattern, causes very major injury to battery service life.The second tradition power supply plan is as in figure 2 it is shown, Fig. 2
Being the structured flowchart powered of the second tradition of correlation technique, all loads are all connected on the system power supply of charging circuit
Outfan, the program solves the first scheme battery of tradition and there is repeated charge defect.But as above DPM
Described in function, when plugging in adapter and battery i.e. will be filled with or fills with, its output voltage can be beyond negative
Carry 2 electrical specification scopes, therefore have to be outward between load 2 power supply and charging circuit system power output end
Add switch mode power (Switched-Mode Power Supply, referred to as SMPS) or linear regulator
(Low Dropout Regulator, referred to as LDO) reduction voltage circuit.Obviously this grade of reduction voltage circuit meeting increased
Introduce following defect, first, add circuit complexity；Second, add Material Cost.3rd, increase
Circuit thermal losses.
Complicated for circuit present in correlation technique, the problem that thermal losses is high, effective solution is the most not yet proposed
Certainly scheme.
Summary of the invention
The invention provides a kind of method of supplying power to, device and terminal, at least to solve electricity present in correlation technique
Road is complicated, the problem that thermal losses is high.
According to an aspect of the invention, it is provided a kind of method of supplying power to, comprise determining that supplying cell in terminal
Voltage and the voltage of externally fed power supply that connects of described terminal, wherein, described terminal is provided with dynamic road
Footpath management function DPM charging circuit；Voltage according to the described supplying cell determined and described externally fed electricity
The voltage in source, control the load in described terminal and the break-make of the first line between system power supply outfan and
The break-make of the second circuit between described load and battery charging outfan, wherein, the running voltage of described load
Less than the ceiling voltage of described supplying cell, described system power supply outfan for utilizing described externally fed power supply is
The port that described load is powered, described battery charging outfan is described load for utilizing described supplying cell
The port being powered；Utilize described supplying cell, described externally fed power supply, control after first line and
The second circuit after control is described load supplying.
Further, according to voltage and the voltage of described externally fed power supply of the described supplying cell determined, control
The break-make of the break-make and described second circuit of making described first line includes at least one of: when described outside
When the voltage of power supply is more than the full voltage of described supplying cell, controls described first line and disconnect, control institute
State the second line conduction；When the voltage of described externally fed power supply is less than or equal to the full voltage of described supplying cell
Time, control the conducting of described first line and open, control described second circuit and disconnect；When described externally fed power supply not
During power supply, control the conducting of described first line, control described second line conduction.
Further, the break-make of the break-make and described second circuit that control described first line includes: utilizes and opens
Close break-make and the break-make of described second circuit controlling first line described in logic control.
Further, the break-make of the break-make and described second circuit that control described first line includes: by control
The folding making the first switch in described first line controls the break-make of described first line and by controlling institute
The folding stating the second switch on the second circuit controls the break-make of described second circuit, wherein, described first switch
It is low-impedance device with described second switch.
Further, described low-impedance device includes Metal-Oxide Semiconductor field effect transistor M OSFET.
According to a further aspect in the invention, it is provided that a kind of electric supply installation, comprise determining that module, be used for determining
The voltage of the externally fed power supply that the voltage of supplying cell and described terminal connect in terminal, wherein, described terminal
In be provided with dynamic route management function DPM charging circuit；Control module, for according to the described confession determined
The voltage of electricity battery and the voltage of described externally fed power supply, control the load in described terminal and system power supply be defeated
Go out the second circuit between the break-make of first line between end and described load and battery charging outfan
Break-make, wherein, the running voltage of described load is less than the ceiling voltage of described supplying cell, described system power supply
Outfan is that to utilize described externally fed power supply be the port that described load is powered, the charging output of described battery
End is the port that described load is powered for utilizing described supplying cell；Supply module, is used for utilizing described confession
First line after electricity battery, described externally fed power supply, control and the second circuit after control are described load
Power supply.
Further, described control module includes at least one of: when the voltage of described externally fed power supply is big
When the full voltage of described supplying cell, control described first line and disconnect, control described second line conduction；
When the voltage of described externally fed power supply is less than or equal to the full voltage of described supplying cell, control described first
Line conduction is opened, and controls described second circuit and disconnects；When described externally fed power supply is not powered, control described
First line turns on, and controls described second line conduction.
Further, described control module includes: utilize switch control logic to control the break-make of described first line
Passage with described second circuit.
Further, described control module includes: by controlling the folding of the first switch in described first line
Control the break-make of described first line and control by controlling the folding of the second switch on described second circuit
The break-make of described second circuit, wherein, described first switch and described second switch are low-impedance device.
Further, described low-impedance device includes Metal-Oxide Semiconductor field effect transistor M OSFET.
According to a further aspect in the invention, it is provided that a kind of terminal, including the device described in any of the above-described item.
By the present invention, use the externally fed electricity of voltage and the described terminal connection determining supplying cell in terminal
The voltage in source, wherein, is provided with dynamic route management function DPM charging circuit in described terminal；According to really
The voltage of fixed described supplying cell and the voltage of described externally fed power supply, control load in described terminal and
Between the break-make of the first line between system power supply outfan and described load and battery charging outfan
The break-make of the second circuit, wherein, the running voltage of described load is less than the ceiling voltage of described supplying cell, institute
Stating system power supply outfan is that to utilize described externally fed power supply be the port that described load is powered, described electricity
Pond charging outfan is that to utilize described supplying cell be the port that described load is powered；Utilize described power supply electricity
First line after pond, described externally fed power supply, control and the second circuit after control are described load supplying,
Solve circuit complexity present in correlation technique, the problem that thermal losses is high, and then it is complicated to have reached reduction circuit
Degree, reduces the effect of thermal losses.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application,
The schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.
In the accompanying drawings:
Fig. 1 is the structured flowchart of the first tradition power supply of correlation technique；
Fig. 2 is the structured flowchart that the second tradition of correlation technique is powered；
Fig. 3 is the flow chart of method of supplying power to according to embodiments of the present invention；
Fig. 4 is the structured flowchart of electric supply installation according to embodiments of the present invention；
Fig. 5 is the structured flowchart of terminal according to embodiments of the present invention；
Fig. 6 is the structured flowchart of the electric supply installation of mobile terminal according to embodiments of the present invention；
Fig. 7 is the flow chart of control logic according to embodiments of the present invention；
Fig. 8 is the detailed structured flowchart of electric supply installation according to embodiments of the present invention.
Detailed description of the invention
Below with reference to accompanying drawing and describe the present invention in detail in conjunction with the embodiments.It should be noted that do not rushing
In the case of Tu, the embodiment in the application and the feature in embodiment can be mutually combined.
Providing a kind of method of supplying power to, device and terminal in the present embodiment, Fig. 3 is according to embodiments of the present invention
The flow chart of method of supplying power to, as it is shown on figure 3, this flow process comprises the steps:
Step S302, determines the electricity of the externally fed power supply that the voltage of supplying cell and this terminal connect in terminal
Pressure, wherein, is provided with dynamic route management function DPM charging circuit in this terminal；
Step S304, according to voltage and the voltage of externally fed power supply of the supplying cell determined, controls terminal
In load and system power supply outfan between first line break-make and load and battery charge outfan
Between the break-make of the second circuit, wherein, the running voltage of this load, less than the ceiling voltage of supplying cell, is
System power output end is the port utilizing externally fed power supply to be powered for load, and battery charging outfan is profit
It is the port that load is powered with supplying cell；
Step S306, after utilizing the first line after supplying cell, externally fed power supply, control and controlling
Second circuit is load supplying.
By above-mentioned steps, by the first line between load and the system power supply outfan in control terminal
The break-make of the second circuit between break-make and load and battery charging outfan realizes by supplying cell with outer
Portion's power supply is load supplying, can be set to the power supply body of load supplying flexibly, the electricity reduced greatly
Road complexity and thermal losses, solve circuit present in correlation technique complicated, the problem that thermal losses is high, and then
Reach reduction circuit complexity, reduce the effect of thermal losses.
In an optional embodiment, at the voltage according to the supplying cell determined and the electricity of externally fed power supply
Pressure, when controlling the break-make of the break-make of first line and the second circuit, can at least one in the following way:
When the voltage of externally fed power supply is more than the full voltage of supplying cell, controlling this first line and disconnect, controlling should
Second line conduction；When the voltage of externally fed power supply is less than or equal to the full voltage of supplying cell, controlling should
First line conducting is opened, and controls this second circuit and disconnects；When externally fed power supply is not powered, control this first
Line conduction, controls this second line conduction.Wherein, when first line disconnects, during the second line conduction, phase
For correlation technique, only when battery is close to the state being full of or fill with, just there will be and repeatedly fill
The problem of electric discharge, reduces the probability that repeated charge occurs, meanwhile, thermal losses also has the biggest decline；When
First line turns on, and during the second line port, can avoid repeated charge, greatly reduce thermal losses simultaneously；
When first line and the second circuit are both turned on, original impedance can be reduced half, thus reduce thermal losses.
When controlling the break-make of the break-make of first line and the second circuit, it is possible to use switch control logic is controlled
The break-make of first line processed and the break-make of the second circuit.Wherein, this switch control logic can be hardware circuit,
Software, such as program can also be made, it is achieved thereby that to the break-make of first line and leading to of the second circuit
Disconnected accurate control.
When controlling the break-make of the break-make of first line and the second circuit, can be at first line and the second circuit
On be respectively provided with switch, open and close realize disconnection and the conducting of circuit by what control switched.At one
In optional embodiment, when controlling the break-make of the break-make of first line and the second circuit, can be by controlling the
The folding of the first switch on one circuit controls the break-make of first line and by controlling the on the second circuit
The folding of two switches controls the break-make of the second circuit, and wherein, this first switch and second switch are Low ESR device
Part.
In an optional embodiment, above-mentioned low-impedance device includes that Metal-Oxide Semiconductor field effect is brilliant
Body pipe MOSFET.
Additionally providing a kind of electric supply installation in the present embodiment, this device is used for realizing above-described embodiment and the most real
Execute mode, carry out repeating no more of explanation.As used below, term " module " can realize
The software of predetermined function and/or the combination of hardware.Although the device described by following example is preferably with software
Realize, but hardware, or the realization of the combination of software and hardware also may and be contemplated.
Fig. 4 is the structured flowchart of electric supply installation according to embodiments of the present invention, and as shown in Figure 4, this device includes
Determine module 42, control module 44 and supply module 46, below this device is illustrated.
Determine module 42, for determining the externally fed electricity that in terminal, the voltage of supplying cell and this terminal connect
The voltage in source, wherein, is provided with dynamic route management function DPM charging circuit in this terminal；Control module
44, it is connected to above-mentioned determine module 42, for the voltage according to the supplying cell determined and externally fed power supply
Voltage, control the break-make of first line between load and the system power supply outfan in terminal and load and
The break-make of the second circuit between battery charging outfan, wherein, the running voltage of this load is less than supplying cell
Ceiling voltage, this system power supply outfan be utilize externally fed power supply for the port that is powered of load, should
Battery charging outfan is the port utilizing supplying cell to be powered for load；Supply module 46, is connected to
Above-mentioned control module 44, the first line after utilizing supplying cell, externally fed power supply, control and control
The second circuit after system is load supplying.
In an optional embodiment, above-mentioned control module 44 includes at least one of: work as externally fed
When the voltage of power supply is more than the full voltage of supplying cell, controls first line and disconnect, control the second line conduction；
When the voltage of externally fed power supply is less than or equal to the full voltage of supplying cell, controls first line conducting and open,
Control the second circuit to disconnect；When externally fed power supply is not powered, control first line conducting, control the second line
Road turns on.
In an optional embodiment, control module 44 includes: utilize switch control logic to control First Line
The break-make on road and the passage of the second circuit.
In an optional embodiment, control module 44 includes: open by controlling in first line first
The folding closed controls the break-make of first line and controls by controlling the folding of the second switch on the second circuit
The break-make of the second circuit, wherein, this first switch and this second switch are low-impedance device.
In an optional embodiment, above-mentioned low-impedance device includes that Metal-Oxide Semiconductor field effect is brilliant
Body pipe MOSFET.
Fig. 5 is the structured flowchart of terminal according to embodiments of the present invention, as it is shown in figure 5, this terminal 52 includes
The electric supply installation 54 of any of the above-described.
Below as a example by mobile terminal, illustrate for the load supplying in mobile terminal.
Fig. 6 is the structured flowchart of the electric supply installation of mobile terminal according to embodiments of the present invention, as shown in Figure 6,
This device includes: with DPM function charging circuit 62, battery 64, power switch K1 and power switch
The power switch circuit 66 of K2 composition, controls power switch Guan Bi and the switch control logic 68 closed, load
1 and load 2.
Wherein, the input with DPM function charging circuit 62 accepts external power source (hereinafter referred to as
EXT_POWER), through power conversion, there are two outfans: be respectively system power supply outfan (following
Referred to as SYS_PWR end) and battery charging outfan (hereinafter referred to as BATTERY end).Wherein,
SYS_PWR end ceiling voltage can exceed battery 64 full voltage 100～200mV.Charge with DPM function
Circuit 62 battery charging outfan and battery 64 are joined directly together.With in DPM function charging circuit 62
DPM function, has following two significant properties:
(1) when inserting external adapter, even if during battery 64 power shortage (generally below 3V), its system
Power output end voltage can maintain system and normally start required voltage (usually 3.4V or 3.6V),
So can solve tradition and in the case of battery power shortage, plug in adapter without DPM function charging scheme mobile terminal
The defect that cannot start.
(2) when inserting external adapter, if load is connected on the system electricity of charging chip (or circuit)
Source output terminal, load is preferential from this path obtaining current of external adapter to system power supply outfan, if load
Required electric current is more than charging chip (or circuit) cut-off current, and battery 64 meeting automatic discharging, supplemental current is given
Load.If load current is less than charging chip (or circuit) cut-off current, the most unnecessary electric current can give battery
64 chargings, would not there is discharge scenario in battery 64.
Above-mentioned load 1 electrical installation voltage can be higher than battery 64 ceiling voltage；Above-mentioned load 2 is electric
Running voltage must be within battery 64 ceiling voltage scope.
Above-mentioned power switch circuit 66 is made up of power switch K1 and power switch K2, power switch K1's
Input is connected with the SYS_PWR end with DPM function charging circuit 62；The input of power switch K2
End and the BATTERY end with DPM function charging circuit 62, i.e. battery 64 are connected.Power switch K1
Outfan and the outfan of power switch K2 be directly shorted together, then direct with the feeder ear of load 2
It is connected.
Above-mentioned two power switch K1 and K2 Guan Bi is controlled by switch control logic 68 with disconnecting, this switch control
Logic 68 processed can be realized by hardware circuit, it is also possible to is realized by software.Control logical flow chart such as accompanying drawing 7
Shown in, Fig. 7 is the flow chart of control logic according to embodiments of the present invention, as it is shown in fig. 7, this flow process includes
Following steps:
Step S702, starts；
Step S704, it may be judged whether have legitimate external plant-grid connection, when judged result is for being, goes to step
S708, otherwise, goes to step S706；
Step S706, when not connecing outside legal power supply with DPM function charging circuit 62, power is opened
Closing K1 and K2 all to be closed by control, power switch parallel relationship makes path resistance minimum, two power switch
Load 2 power supply is cooperatively given in interconnection；
Step S708, when connecing outside legal power supply with DPM function charging circuit 62, mobile terminal system
System carries out detection and judges the SYS_PWR voltage with DPM function charging circuit 62, it is judged that SYS_PWR
Whether voltage is more than the full voltage of battery 64, it is judged that when result is for being, goes to step S712, otherwise, goes to
Step S710；
Step S710, determines when SYS_PWR voltage is not more than battery 64 full voltage, controls power switch
K1 closes, and K2 disconnects, SYS_PWR give load 2 power supply；
Step S712, when determining SYS_PWR voltage more than battery 64 full voltage, controls power switch
K1 disconnects, and K2 closes, battery 64 give load 2 power supply.
Wherein, power switch K1, K2 and connected mode can be integrated in inside charging circuit, it is also possible to solely
Vertical charging circuit.
Two above-mentioned power switch K1, K2 and connected mode can be built by separation MOSFET element,
It can also be an integration module.
Above-mentioned power switch K1, K2 can be made up of low-impedance power MOSFET or other is novel
Low-impedance device module forms.
Above-described embodiment can reach following effect: (1) is associated in charged electrical only with two independent power switch series
Between road and load 2, comparing SMPS or the LDO blood pressure lowering of tradition first scheme, circuit is simpler,
Material Cost is the lowest；(2) the lowest due to series power switch impedance, its thermal losses brought is negligible not
Meter, almost can match in excellence or beauty with the first scheme of tradition；(3) by switch control logic control, can be to a certain degree
On evade tradition the first scheme exist battery repeated charge defect.
Below by concrete case study on implementation, in conjunction with accompanying drawing and flow chart, present invention is done the most detailed
Thin elaboration.
Fig. 8 is the detailed structured flowchart of electric supply installation according to embodiments of the present invention, as shown in Figure 8, this dress
Put and include DPM function charging circuit module 82, battery module 84, power supply managing chip module 86,
P_MOSFET power switch K1 module 88, P_MOSFET power switch K2 module 810, on-off control
Logic module 812, radio-frequency power amplifier module 814.Wherein power supply managing chip module 86 is electric
Operating voltage range can be more than battery module 84 full voltage；Radio-frequency power amplifier module 814 electrical installation
Voltage range must be within battery module 814 full voltage scope.
It is used for connecting external power source EXT_POWER with DPM function charging circuit module 82, through interior
Portion's power conversion, is charged battery module 84 and exports a road independent current source SYS_PWR.
SYS_PWR power supply output with DPM function charging circuit module 82 is connected respectively to system electricity
Source terminal (the S shown in Fig. 8 of source control chip module 86 and P_MOSFET power switch K1 module 88
End).
BATTERY outfan with DPM function charging circuit module 82 is connected to P_MOSFET merit
The source terminal (S end shown in Fig. 8) of rate switch K2 module 810.
It is no matter P_MOSFET power switch K1 or P_MOSFET is power switch K2, they grids
(G pole shown in Fig. 8) and source electrode (S pole shown in Fig. 8) are all by a respective resistance 10K resistance R phase
Even, it is therefore an objective to ensure by default, the grid level of P_MOSFET power switch and source level phase
Deng, make P_MOSFET give tacit consent to off state.
The drain electrode end (D end shown in Fig. 8) of P_MOSFET power switch K1 module 88 and P_MOSFET
The drain electrode end (D end shown in Fig. 8) of power switch K2 module 810 is interconnected at together, its node output PA_PWR
As the power supply of radio-frequency power amplifier module, it is connected to the feeder ear of radio-frequency power amplifier module 814.
Switch control logic module 812, using CPU as main control unit, selects 4 multipurpose pins
(Multipurpose Pin, referred to as MPP), as switch input/output control signal, can orientate as
MPP1～MPP4.Multipurpose pin MPP1 and MPP2 is configured to numeral output pin on software, respectively
Control the switch of transistor M1 and M2.When MPP exports high level, transistor M turns on, P_MOSFET
Grid (G pole shown in Fig. 8) ground connection of power switch, P_MOSFET power switch is in the conduction state.
Otherwise, when MPP output low level, transistor M ends, the grid (figure of P_MOSFET power switch
G pole shown in 8) current potential passes through resistance R and source potential is equal, and P_MOSFET power switch is in cut-off
State.Transistor M1 and M2 plays level conversion function in this control logic circuit, prevents P_MOSFET
Power switch source electrode too high voltages is carried on the MPP pin of CPU, causes MPP pin excessive pressure damages.
Multipurpose pin MPP3 is configured to simulate input pin on software, and it can be with real-time sampling charging circuit module
System power supply output signal SYS_PWR, and preset battery full voltage threshold value (4.2V or 4.35V) with software
Compare.Multiplex pin MPP4 is configured to numeral input pin, receives the inspection of charging circuit module input power
Survey output signal PG_GD (generally Low level effective).Software control logic flow chart is referred to Fig. 7.
When terminal does not plugs in external power source, the MPP4 pin of CPU detects that PG_GD is low level, controls
MPP1/MPP2 is high level, and transistor M1/M2 is both turned on, P_MOSFET power switch K1/K2
All closing, the path impedance so powered to radio-frequency power amplifier module is due to two power switch parallel relationship
Minimize.Assuming that the most independent power switch path resistance is 10 consumption Europe, the most now path impedance is
5 consumption Europe.Assume that radio-frequency power amplifier module load current is 1A, for the first power supply plan of tradition,
Its path thermal losses P=0*1A=0W；For the present invention, its path impedance is 5m Ω, therefore thermal losses P=5m
Ω * 1A*1A=5mW；For tradition the second power supply plan, it is assumed that supply voltage is 4V, reduction voltage circuit is imitated
Rate is 90%, then thermal losses P=4V*1A* (1-90%)=400mW.Visible, the path of the power supply that the present invention gives
The former thermal losses that less than tradition the second power supply plan produce is lost, compares the first power supply plan of tradition, its heat
Loss the most only only has 5mW, the most almost negligible.
When this terminal accesses legitimate external power supply EXT_POWER, the MPP4 pin of CPU detects
PG_GD is low level, and now CPU can sample MPP3 voltage further, when MPP3 pin electricity being detected
Pressure, more than when presetting battery module 84 full voltage (4.2V or 4.35V), controls MPP1 pin and exports low electricity
Flat, MPP2 pin output high level, make P_MOSFET power switch K1 module 88 disconnect, P_MOSFET
Power switch K2 module 810 closes, radio-frequency power amplifier module 814 power supply
PA_PWR=BATTERY, although now control logic, can make the first scheme of battery module 84 such as tradition
Equally, battery module 84 is allowed to be operated in repeated charge pattern, but owing to this situation only occurs in battery
Module 84 is close to being full of or filling with state, so this occurrence probability is more than the first supplier of electricity of tradition
Case is greatly reduced.Compare calculating thermal losses again, it is assumed that load current be 1A, PA_PWR be 4V.Right
In the first tradition power supply plan, its thermal losses P=0*1A=0W；For the present embodiment, owing to now being penetrated
Frequently the supply access impedance of power amplifier module 814 is single power switch direct impedance 10m Ω, its heat
Loss P=10m Ω * 1A*1A=10mW；For tradition the second power supply plan, it is assumed that reduction voltage circuit efficiency is
90%, its thermal losses P=4V*1A* (1-90%)=400mW.Visible, the present embodiment power supply plan path loss
The thermal losses produced much smaller than tradition the second power supply plan, compares the first power supply plan of tradition, its thermal losses
The most only only have 10mW, the most almost negligible.Otherwise, when CPU detection MPP4 is low level, and MPP3
Pin voltage, less than when presetting battery module 84 full voltage, controls MPP1 pin output high level, MPP2
Pin output low level, makes P_MOSFET power switch K1 module 88 turn on, and P_MOSFET power is opened
Close K2 module 810 to disconnect, radio-frequency power amplifier module 814 power supply PA_PWR=SYS_PWR,
Evade the first power supply plan battery module 84 repeated charge defect of tradition.Compare three kinds as described above
Power supply plan thermal losses, the path loss of the power supply that the present embodiment is given produces much smaller than tradition the second power supply plan
Thermal losses.
In battery protection function, Material Cost, circuit complexity, the more traditional two kinds of confessions of thermal losses four dimensions
Electricity scheme and the pluses and minuses of this patent scheme, collect as shown in table 1:
Table 1
| Item compared | The first scheme of tradition | Tradition first scheme | The present invention program |
| Battery protection function | Difference | Excellent | Good |
| Material Cost | Nothing | High | Low |
| Circuit complexity | Nothing | Complicated | Simply |
| Thermal losses | Nothing | High | The lowest |
It should be noted that for clearly principle of specification, above-mentioned P_MOSFET power switch and connection
Mode, is the most all independent.But in actual circuit, these functional units are often integrated in same
One chip internal, this also belongs to the content of present invention protection.
Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be used
General calculating device realizes, and they can concentrate on single calculating device, or is distributed in multiple meter
Calculating on the network that device is formed, alternatively, they can realize with calculating the executable program code of device,
Perform it is thus possible to be stored in storing in device by calculating device, and in some cases, can
With be different from order herein perform shown or described by step, or they are fabricated to respectively each collection
Become circuit module, or the multiple modules in them or step are fabricated to single integrated circuit module realize.
So, the present invention is not restricted to the combination of any specific hardware and software.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for this area
Technical staff for, the present invention can have various modifications and variations.All within the spirit and principles in the present invention,
Any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (11)
1. a method of supplying power to, it is characterised in that including:
Determine the voltage of supplying cell in terminal and the voltage of the externally fed power supply of described terminal connection, its
In, described terminal is provided with dynamic route management function DPM charging circuit；
Voltage according to the described supplying cell determined and the voltage of described externally fed power supply, control described
The break-make of the first line between load and system power supply outfan in terminal and described load and electricity
The break-make of the second circuit between pond charging outfan, wherein, the running voltage of described load is less than described
The ceiling voltage of supplying cell, described system power supply outfan is described for utilizing described externally fed power supply
The port that load is powered, described battery charging outfan is described load for utilizing described supplying cell
The port being powered；
After utilizing the first line after described supplying cell, described externally fed power supply, control and controlling
Second circuit is described load supplying.
Method the most according to claim 1, it is characterised in that according to the voltage of the described supplying cell determined
With the voltage of described externally fed power supply, control the break-make of described first line and described second circuit
Break-make includes at least one of:
When the voltage of described externally fed power supply is more than the full voltage of described supplying cell, control described the
One circuit disconnects, and controls described second line conduction；
When the voltage of described externally fed power supply is less than or equal to the full voltage of described supplying cell, control
The conducting of described first line is opened, and controls described second circuit and disconnects；
When described externally fed power supply is not powered, control the conducting of described first line, control described second
Line conduction.
Method the most according to claim 1, it is characterised in that control break-make and the institute of described first line
The break-make stating the second circuit includes:
Switch control logic is utilized to control break-make and the break-make of described second circuit of described first line.
Method the most according to claim 1, it is characterised in that control break-make and the institute of described first line
The break-make stating the second circuit includes:
The break-make of described first line is controlled by controlling the folding of the first switch in described first line
And by controlling the break-make of folding described second circuit of control of the second switch on described second circuit,
Wherein, described first switch and described second switch are low-impedance device.
Method the most according to claim 4, it is characterised in that described low-impedance device includes metal-oxide
Thing semiconductor field effect transistor MOSFET.
6. an electric supply installation, it is characterised in that including:
Determine module, the externally fed that the voltage and described terminal for determining supplying cell in terminal connects
The voltage of power supply, wherein, is provided with dynamic route management function DPM charging circuit in described terminal；
Control module, for according to the voltage of the described supplying cell determined and described externally fed power supply
Voltage, control the load in described terminal and the break-make of the first line between system power supply outfan and
The break-make of the second circuit between described load and battery charging outfan, wherein, the work of described load
Voltage is less than the ceiling voltage of described supplying cell, and described system power supply outfan is for utilizing described outside confession
Electricity power supply is the port that described load is powered, and described battery charging outfan is for utilizing described power supply electricity
Pond is the port that described load is powered；
Supply module, first after utilizing described supplying cell, described externally fed power supply, control
The second circuit after circuit and control is described load supplying.
Device the most according to claim 6, it is characterised in that described control module includes at least one of:
When the voltage of described externally fed power supply is more than the full voltage of described supplying cell, control described the
One circuit disconnects, and controls described second line conduction；
When the voltage of described externally fed power supply is less than or equal to the full voltage of described supplying cell, control
The conducting of described first line is opened, and controls described second circuit and disconnects；
When described externally fed power supply is not powered, control the conducting of described first line, control described second
Line conduction.
Device the most according to claim 6, it is characterised in that described control module includes:
Switch control logic is utilized to control break-make and the passage of described second circuit of described first line.
Device the most according to claim 6, it is characterised in that described control module includes:
The break-make of described first line is controlled by controlling the folding of the first switch in described first line
And by controlling the break-make of folding described second circuit of control of the second switch on described second circuit,
Wherein, described first switch and described second switch are low-impedance device.
Device the most according to claim 9, it is characterised in that described low-impedance device includes metal-oxide
Thing semiconductor field effect transistor MOSFET.
11. 1 kinds of terminals, it is characterised in that include the device according to any one of claim 6 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510079237.8A CN105990893B (en) | 2015-02-13 | 2015-02-13 | Method of supplying power to, device and terminal |
| PCT/CN2015/086277 WO2016127605A1 (en) | 2015-02-13 | 2015-08-06 | Power supply method and apparatus, and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510079237.8A CN105990893B (en) | 2015-02-13 | 2015-02-13 | Method of supplying power to, device and terminal |
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| CN105990893A true CN105990893A (en) | 2016-10-05 |
| CN105990893B CN105990893B (en) | 2019-07-26 |
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| CN (1) | CN105990893B (en) |
| WO (1) | WO2016127605A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107864435A (en) * | 2017-11-09 | 2018-03-30 | 广州艾美网络科技有限公司 | Control method, control circuit and the audio frequency apparatus of audio power |
| CN110365082A (en) * | 2019-07-24 | 2019-10-22 | 昆山龙腾光电有限公司 | Electric power management circuit, electronic equipment and method for managing power supply |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688383B (en) * | 2020-12-15 | 2023-06-20 | 维沃移动通信有限公司 | Power supply control circuit, power supply control method and device and electronic equipment |
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| CN101102052A (en) * | 2007-06-13 | 2008-01-09 | 华为技术有限公司 | Power supply unit, power supply device and system and power supply method |
| CN101884153A (en) * | 2007-12-03 | 2010-11-10 | 罗姆股份有限公司 | Power management circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9231440B2 (en) * | 2012-04-18 | 2016-01-05 | Samsung Sdi Co., Ltd. | Power supply apparatus and controlling method of the same |
| CN104143850B (en) * | 2014-08-20 | 2017-02-15 | 南京矽力杰半导体技术有限公司 | Battery charge and discharge management circuit and electronic device applying same |
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- 2015-08-06 WO PCT/CN2015/086277 patent/WO2016127605A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101102052A (en) * | 2007-06-13 | 2008-01-09 | 华为技术有限公司 | Power supply unit, power supply device and system and power supply method |
| CN101884153A (en) * | 2007-12-03 | 2010-11-10 | 罗姆股份有限公司 | Power management circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107864435A (en) * | 2017-11-09 | 2018-03-30 | 广州艾美网络科技有限公司 | Control method, control circuit and the audio frequency apparatus of audio power |
| CN107864435B (en) * | 2017-11-09 | 2024-03-15 | 广州艾美网络科技有限公司 | Audio power control method, control circuit and audio equipment |
| CN110365082A (en) * | 2019-07-24 | 2019-10-22 | 昆山龙腾光电有限公司 | Electric power management circuit, electronic equipment and method for managing power supply |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105990893B (en) | 2019-07-26 |
| WO2016127605A1 (en) | 2016-08-18 |
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