CN109713746A - A kind of charging circuit and charge control method, mobile terminal - Google Patents
A kind of charging circuit and charge control method, mobile terminal Download PDFInfo
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- CN109713746A CN109713746A CN201811558359.5A CN201811558359A CN109713746A CN 109713746 A CN109713746 A CN 109713746A CN 201811558359 A CN201811558359 A CN 201811558359A CN 109713746 A CN109713746 A CN 109713746A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a kind of charging circuit and charge control methods, mobile terminal, by the way that two charging paths are arranged on charging circuit, and the total impedance difference of two charging paths is larger, when the electricity of battery to be charged is lower, it is charged using the biggish charging paths of impedance, if the electricity of battery to be charged is medium or above, selection switches to the lesser charging paths of impedance and charges, such mode can be reduced due to the increased calorific value of the consumption of impedance, the speed of charging is also ensured simultaneously, both calorific value can be effectively reduced, the efficiency of charging can be improved again, it can also be used in combination simultaneously with existing high pass scheme, user experience is provided, and compatible design is realized with current general charging scheme.
Description
Technical field
The present invention relates to technical field of touch control, more specifically to a kind of charging circuit and charge control method, movement
Terminal.
Background technique
With continuing to introduce new for terminal manufacturing process, the function of terminal phone is more and more abundant, terminal user opponent
The degree of dependence of machine is also higher and higher, once utilization rate is got higher, the demand to battery is also higher and higher, as user uses mobile phone
Frequency increase, fill within one day one or several chargings in electricity one day be all customary thing, and user is to the speed of charging
Increasingly require, especially now major mobile phone vendor commercial city in the effect for realizing quick charge using quick charger, though
Ran Ge manufacturer meets the demand of user on charging rate, but there is no solve for negative issue brought by rapid charge
It certainly, is heat generation rate height, and existing most commonly used charging scheme is the charging scheme of high pass, and the big portion of the general scheme
Dividing is realized using QC3.0/QC2.0 etc., these modes would generally bring apparent fever phenomenon, this can be leveraged
User experience.
Summary of the invention
The embodiment of the invention provides a kind of charging circuit and charge control methods, mobile terminal, to solve existing height
Fast charging circuit fever technical problem that is excessively serious, and causing the usage experience of user bad.
In order to solve the above-mentioned technical problem, the embodiment of the invention provides a kind of charging circuit, the charging circuit includes:
Power supply interface, and the first charging paths, the second charging paths and described for controlling that are connect respectively with the power supply interface
First charging paths or second charging paths treat the logic circuit of rechargeable battery charging, wherein first charging paths
Total impedance be greater than second charging paths total impedance；
In charging, the electricity percentage of the charging circuit real-time detection battery to be charged；
If the electricity percentage is low battery state, the logic circuit connects first charging paths to described
Battery to be charged charges；
If the electricity percentage is medium state of charge or more, the logic circuit connects second charging
The charging circuit is switched to second charging paths to the electricity to be charged from first charging paths by branch
It charges in pond.
Optionally, second charging paths include the charging management chip WP being sequentially connected in series, PMOS tube and three poles
Pipe Q1, and the auxiliary electron device between the charging management chip WP, PMOS tube and triode Q1 is connected to by series/parallel
Part.
Optionally, during the charging process, the charging management chip WP acquires the electricity hundred of the battery to be charged in real time
Point than and/or first charging paths charging current, if the electricity percentage and/or charging current meet the charging
The switching condition of managing chip WP then controls the logic circuit and converts to second charging paths work.
Optionally, the control logic circuit, which is converted to second charging paths work, includes:
The triode Q1 is connected, the grid output high potential for controlling the triode Q1 realizes conducting, and described in holding
The source electrode of the low-potential state of the base stage of PMOS tube, the PMOS tube is realized by obtaining high potential after the subsidiary components
Conducting.
Optionally, the PMOS tube is to be combined by N number of PMOS tube by the PMOS tube that series-parallel system connects, and N is greater than etc.
In 1.
Optionally, first charging paths include: power management chip PMI and metal-oxide-semiconductor Q4；
The power management chip PMI is used to detect the electricity percentage of the battery to be charged, and according to detection
Result connect first charging paths and pass through metal-oxide-semiconductor Q4 charging；
The metal-oxide-semiconductor Q4 is also connect with the output end of second charging paths, the electricity of the second charging paths output
Stream charges to the battery to be charged by the metal-oxide-semiconductor Q4.
Optionally, the power supply interface is type-c charging interface, the charging circuit real-time detection battery to be charged
Electricity percentage includes: described to be charged to determine by detecting the data of the data port pin in the type-c charging interface
The electricity percentage of battery.
Further, the embodiment of the invention also provides a kind of mobile terminals, including charging circuit as described above and electricity
Pond, the battery are connect with first charging paths, and second charging paths pass through the MOS in first charging paths
Pipe Q4 is connect with the battery.
Further, the embodiment of the invention also provides a kind of charge control methods, are applied to charging electricity as described above
Road, which comprises
In the charge state, the electricity percentage of battery to be charged is detected；
If judging the electricity percentage less than the first preset value, the battery to be charged is low battery state, is connected
The first charging paths in the charging circuit charge；
If judging, the electricity percentage is greater than or equal to the first preset value, and the battery to be charged is medium electricity shape
More than state, the second charging paths connected in the charging circuit charge.
Optionally, when first charging paths charging is used in the charging circuit, the detection electricity to be charged
The electricity percentage in pond, further includes:
Detect the charging current of first charging paths；
If the charging current meets the switching condition of second charging paths, by the charging circuit from connect institute
The state for stating the first charging paths is converted to the state for connecting second charging paths, by second charging paths to institute
State battery charging to be charged.
The beneficial effect of the embodiment of the present invention is:
The embodiment of the invention provides a kind of charging circuit and charge control methods, mobile terminal, for existing high speed
Charging circuit scheme can bring apparent fever phenomenon, will affect the defect of user experience, by the way that two are arranged on charging circuit
A charging paths, and the total impedance difference of two charging paths is larger, when the electricity of battery to be charged is lower, using impedance
Biggish charging paths charge, if the electricity of battery to be charged is medium or above, it is lesser that selection switches to impedance
Charging paths charge, and such mode can be reduced due to the increased calorific value of the consumption of impedance, while being also ensured and being filled
The speed of electricity, not only can be effectively reduced calorific value, but also the efficiency of charging can be improved, while can also be with existing high pass scheme
It is used in combination, provides user experience, and realize compatible design with current general charging scheme.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
The hardware structural diagram of Fig. 1 each embodiment one optional mobile terminal to realize the present invention；
Fig. 2 is the structural schematic diagram of charging circuit provided in an embodiment of the present invention；
Fig. 3 is another structural schematic diagram of charging circuit provided in an embodiment of the present invention；
Fig. 4 is another structural schematic diagram of charging circuit provided in an embodiment of the present invention；
Fig. 5 is the circuit diagram of charging circuit provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of mobile terminal provided in an embodiment of the present invention；
Fig. 7 is the flow chart of charge control method provided in an embodiment of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
In subsequent description, it is only using the suffix for indicating such as " module ", " component " or " unit " of element
Be conducive to explanation of the invention, itself there is no a specific meaning.Therefore, " module ", " component " or " unit " can mix
Ground uses.
Terminal can be implemented in a variety of manners.For example, terminal described in the present invention may include such as mobile phone, plate
Computer, laptop, palm PC, personal digital assistant (Personal Digital Assistant, PDA), portable
Media player (Portable Media Player, PMP), navigation device, wearable device, Intelligent bracelet, pedometer etc. move
The fixed terminals such as dynamic terminal, and number TV, desktop computer, it is however noted that, above-mentioned terminal should manage
Solution is designed with the terminal of double screen to be, and double screen can be realized based on current terminal enclosure and is bending or folding over, even
It can also be double-display screen flexible.
It will be illustrated by taking mobile terminal as an example in subsequent descriptions, it will be appreciated by those skilled in the art that in addition to special
Except element for moving purpose, the construction of embodiment according to the present invention can also apply to the terminal of fixed type.
It will be illustrated by taking mobile terminal as an example in subsequent descriptions, it will be appreciated by those skilled in the art that in addition to special
Except element for moving purpose, the construction of embodiment according to the present invention can also apply to the terminal of fixed type.
Referring to Fig. 1, a kind of hardware structural diagram of its mobile terminal of each embodiment to realize the present invention, the shifting
Dynamic terminal 100 may include: RF (Radio Frequency, radio frequency) unit 101, WiFi module 102, audio output unit
103, A/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit
108, the components such as memory 109, processor 110 and power supply 111.It will be understood by those skilled in the art that shown in Fig. 1
Mobile terminal structure does not constitute the restriction to mobile terminal, and mobile terminal may include components more more or fewer than diagram,
Perhaps certain components or different component layouts are combined.
It is specifically introduced below with reference to all parts of the Fig. 1 to mobile terminal:
Radio frequency unit 101 can be used for receiving and sending messages or communication process in, signal sends and receivees, specifically, by base station
Downlink information receive after, to processor 110 handle；In addition, the data of uplink are sent to base station.In general, radio frequency unit 101
Including but not limited to antenna, at least one amplifier, transceiver, coupler, low-noise amplifier, duplexer etc..In addition, penetrating
Frequency unit 101 can also be communicated with network and other equipment by wireless communication.Any communication can be used in above-mentioned wireless communication
Standard or agreement, including but not limited to GSM (Global System of Mobile communication, global system for mobile telecommunications
System), GPRS (General Packet Radio Service, general packet radio service), CDMA2000 (Code
Division Multiple Access 2000, CDMA 2000), WCDMA (Wideband Code Division
Multiple Access, wideband code division multiple access), TD-SCDMA (Time Division-Synchronous Code
Division Multiple Access, TD SDMA), FDD-LTE (Frequency Division
Duplexing-Long Term Evolution, frequency division duplex long term evolution) and TDD-LTE (Time Division
Duplexing-Long Term Evolution, time division duplex long term evolution) etc..
WiFi belongs to short range wireless transmission technology, and mobile terminal can help user to receive and dispatch electricity by WiFi module 102
Sub- mail, browsing webpage and access streaming video etc., it provides wireless broadband internet access for user.Although Fig. 1 shows
Go out WiFi module 102, but it is understood that, and it is not belonging to must be configured into for mobile terminal, it completely can be according to need
It to omit within the scope of not changing the essence of the invention.
Audio output unit 103 can be in call signal reception pattern, call mode, record mould in mobile terminal 100
When under the isotypes such as formula, speech recognition mode, broadcast reception mode, by radio frequency unit 101 or WiFi module 102 it is received or
The audio data stored in memory 109 is converted into audio signal and exports to be sound.Moreover, audio output unit 103
Audio output relevant to the specific function that mobile terminal 100 executes can also be provided (for example, call signal receives sound, disappears
Breath receives sound etc.).Audio output unit 103 may include loudspeaker, buzzer etc..
A/V input unit 104 is for receiving audio or video signal.A/V input unit 104 may include graphics processor
(Graphics Processing Unit, GPU) 1041 and microphone 1042, graphics processor 1041 is in video acquisition mode
Or the image data of the static images or video obtained in image capture mode by image capture apparatus (such as camera) carries out
Reason.Treated, and picture frame may be displayed on display unit 106.Through graphics processor 1041, treated that picture frame can be deposited
Storage is sent in memory 109 (or other storage mediums) or via radio frequency unit 101 or WiFi module 102.Mike
Wind 1042 can connect in telephone calling model, logging mode, speech recognition mode etc. operational mode via microphone 1042
Quiet down sound (audio data), and can be audio data by such acoustic processing.Audio that treated (voice) data can
To be converted to the format output that can be sent to mobile communication base station via radio frequency unit 101 in the case where telephone calling model.
Microphone 1042 can be implemented various types of noises elimination (or inhibition) algorithms and send and receive sound to eliminate (or inhibition)
The noise generated during frequency signal or interference.
Mobile terminal 100 further includes at least one sensor 105, such as optical sensor, motion sensor and other biographies
Sensor.Specifically, optical sensor includes ambient light sensor and proximity sensor, wherein ambient light sensor can be according to environment
The light and shade of light adjusts the brightness of display panel 1061, and proximity sensor can close when mobile terminal 100 is moved in one's ear
Display panel 1061 and/or backlight.As a kind of motion sensor, accelerometer sensor can detect in all directions (general
For three axis) size of acceleration, it can detect that size and the direction of gravity when static, can be used to identify the application of mobile phone posture
(such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, percussion) etc.；
The fingerprint sensor that can also configure as mobile phone, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer,
The other sensors such as hygrometer, thermometer, infrared sensor, details are not described herein.
Display unit 106 is for showing information input by user or being supplied to the information of user.Display unit 106 can wrap
Display panel 1061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode can be used
Forms such as (Organic Light-Emitting Diode, OLED) configure display panel 1061.
User input unit 107 can be used for receiving the number or character information of input, and generate the use with mobile terminal
Family setting and the related key signals input of function control.Specifically, user input unit 107 may include touch panel 1071 with
And other input equipments 1072.Touch panel 1071, also referred to as touch screen collect the touch operation of user on it or nearby
(for example user uses any suitable objects or attachment such as finger, stylus on touch panel 1071 or in touch panel 1071
Neighbouring operation), and corresponding attachment device is driven according to preset formula.Touch panel 1071 may include touch detection
Two parts of device and touch controller.Wherein, the touch orientation of touch detecting apparatus detection user, and detect touch operation band
The signal come, transmits a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and by it
It is converted into contact coordinate, then gives processor 110, and order that processor 110 is sent can be received and executed.In addition, can
To realize touch panel 1071 using multiple types such as resistance-type, condenser type, infrared ray and surface acoustic waves.In addition to touch panel
1071, user input unit 107 can also include other input equipments 1072.Specifically, other input equipments 1072 can wrap
It includes but is not limited in physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, operating stick etc.
It is one or more, specifically herein without limitation.
Further, touch panel 1071 can cover display panel 1061, when touch panel 1071 detect on it or
After neighbouring touch operation, processor 110 is sent to determine the type of touch event, is followed by subsequent processing device 110 according to touch thing
The type of part provides corresponding visual output on display panel 1061.Although in Fig. 1, touch panel 1071 and display panel
1061 be the function that outputs and inputs of realizing mobile terminal as two independent components, but in certain embodiments, it can
The function that outputs and inputs of mobile terminal is realized so that touch panel 1071 and display panel 1061 is integrated, is not done herein specifically
It limits.
Interface unit 108 be used as at least one external device (ED) connect with mobile terminal 100 can by interface.For example,
External device (ED) may include wired or wireless headphone port, external power supply (or battery charger) port, wired or nothing
Line data port, memory card port, the port for connecting the device with identification module, audio input/output (I/O) end
Mouth, video i/o port, ear port etc..Interface unit 108 can be used for receiving the input from external device (ED) (for example, number
It is believed that breath, electric power etc.) and the input received is transferred to one or more elements in mobile terminal 100 or can be with
For transmitting data between mobile terminal 100 and external device (ED).
Memory 109 can be used for storing software program and various data.Memory 109 can mainly include storing program area
The storage data area and, wherein storing program area can (such as the sound of application program needed for storage program area, at least one function
Sound playing function, image player function etc.) etc.；Storage data area can store according to mobile phone use created data (such as
Audio data, phone directory etc.) etc..In addition, memory 109 may include high-speed random access memory, it can also include non-easy
The property lost memory, a for example, at least disk memory, flush memory device or other volatile solid-state parts.
Processor 110 is the control centre of mobile terminal, utilizes each of various interfaces and the entire mobile terminal of connection
A part by running or execute the software program and/or module that are stored in memory 109, and calls and is stored in storage
Data in device 109 execute the various functions and processing data of mobile terminal, to carry out integral monitoring to mobile terminal.Place
Managing device 110 may include one or more processing units；Preferably, processor 110 can integrate application processor and modulatedemodulate is mediated
Manage device, wherein the main processing operation system of application processor, user interface and application program etc., modem processor is main
Processing wireless communication.It is understood that above-mentioned modem processor can not also be integrated into processor 110.
Mobile terminal 100 can also include the power supply 111 (such as battery) powered to all parts, it is preferred that power supply 111
Can be logically contiguous by power-supply management system and processor 110, to realize management charging by power-supply management system, put
The functions such as electricity and power managed.
Although Fig. 1 is not shown, mobile terminal 100 can also be including bluetooth module etc., and details are not described herein.
Embodiment to facilitate the understanding of the present invention, the communications network system that mobile terminal of the invention is based below into
Row description.
Based on above-mentioned mobile terminal hardware configuration and communications network system, each implementation of circuit structure of the present invention is proposed
Example.
First embodiment:
The problem of being directed to the charging circuit scheme fever of QC3.0/QC2.0 general at present, the embodiment of the present invention provides
It is a kind of not only to have may be implemented except existing QC3.0/QC2.0 charging, but also can be reduced the degree of heat when charging, specifically such as Fig. 2 institute
Show, charging circuit shown in figure, which applies with mobile terminal, which includes power supply interface 21, first fills
Electric branch 22 and the second charging paths 23, wherein the first charging paths 22 and the second charging paths 23 respectively with power supply interface 21
Connection.
In the present embodiment, when user is when charging to mobile terminal, the charging circuit being arranged in the terminal will
Detect the electricity percentage of current rechargeable battery, and judge electricity be it is low or high, if low, then using in charging circuit
The first charging paths 22 charge, if high either medium, then using the second charging circuit in charging circuit
23 charge.
In the present embodiment, for the first charging paths 22 and the switching of the second charging circuit 23 or control is connected, led to
One logic circuit 24 of setting is crossed to realize, as shown in figure 3, the case where logic circuit 24 is according to detection electricity percentage, control
Switch the connection of the first charging paths 22 or the second charging paths 23.
In the present embodiment, the total impedance of the first charging paths 22 is greater than the total impedance of second charging paths 23,
Higher power consumption can be generated using the big branch charging of impedance in charging process, is that calorific value is big, and the small branch of impedance
Power consumption can be relatively much lower, and in practical applications, preferably select the first charging paths 22 to fill to realize when low battery
Electricity can realize the electricity for quickly improving battery under lesser electric current in this way, and the charging modes of such low current will not be right
Battery generates damage, and after charging to a certain degree, it can be charged by switching to the second charging paths 23, it is both real in this way
Show quick charging, there is the fever consumption that can be reduced due to impedance.
In the present embodiment, charging circuit can also realize the connection of branch by detecting the charging circuit of charging circuit
Or switching, for example, during being charged the battery using the first charging paths 22, when electricity or voltage reach one
It is the condition for meeting switching after determining degree, then charging paths can be switched to the second charging paths 23 and continue to charge, in this way
The conversion consumption of electric energy can be lowered, while the effect of quick charge also may be implemented.
In the present embodiment, second charging paths 23 include be sequentially connected in series charging management chip WP 231,
Triode Q1 233 and PMOS tube 232, and the charging management chip WP, PMOS tube and three poles are connected to by series/parallel
Subsidiary components between pipe Q1, it is specific as shown in Figure 4.
In the present embodiment, 232 output end of PMOS tube can be exported with the charging of the first charging paths 22 and be connected, and be
No matter use the first charging paths 22 or the second charging paths 23, finally with battery charging connection, it is desired nonetheless to
By the first charging paths 22, when only using the second charging paths 22, the first charging paths 22 will not play the role of charging,
Switch connection can only be played the role of.
At this moment, during the charging process, the charging management chip WP acquires the electricity of the battery to be charged to terminal in real time
The charging current of percentage and/or first charging paths, if being filled described in the electricity percentage and/or charging current satisfaction
Fulgurite manages the switching condition of chips W P, then controls the logic circuit and convert to second charging paths work.
When in the present embodiment, for connecting the work of the second charging paths 23, the conducting of modules or unit is closed
Be it is specific as follows, the control logic circuit, which is converted to second charging paths work, includes:
The triode Q1 is connected, the grid output high potential for controlling the triode Q1 realizes conducting, and described in holding
The source electrode of the low-potential state of the base stage of PMOS tube, the PMOS tube is realized by obtaining high potential after the subsidiary components
Conducting.
In the present embodiment, electric current is excessive in order to prevent, and the phenomenon that cause the second charging paths 23 to puncture, it is described
PMOS tube 232 is to be combined by N number of PMOS tube by the PMOS tube that series-parallel system connects, and N is more than or equal to 1, such combination
PMOS tube can form the shunting function of high current, prevent single metal-oxide-semiconductor from burning out.
In the present embodiment, first charging paths 22 include: power management chip PMI 221 and metal-oxide-semiconductor Q4 222；
The power management chip PMI 221 is used to detect the electricity percentage of the battery to be charged, and according to
The result of detection connects first charging paths 22 and is charged by the metal-oxide-semiconductor Q4 222；
The metal-oxide-semiconductor Q4 222 is also connect with the output end of second charging paths 23, second charging paths 23
The electric current of output charges to the battery to be charged by the metal-oxide-semiconductor Q4 222.
In the present embodiment, the power supply interface 21 is type-c charging interface, and the charging circuit real-time detection waits filling
The electricity percentage of battery includes: by detecting the data of the data port pin in the type-c charging interface to determine
State the electricity percentage of battery to be charged.
Charging circuit provided in this embodiment, by the way that two charging paths, and two chargings are arranged on charging circuit
The total impedance difference of branch is larger, when the electricity of battery to be charged is lower, is charged using the biggish charging paths of impedance,
If the electricity of battery to be charged is medium or above, selection switches to the lesser charging paths of impedance and charges, such
Mode can be reduced due to the increased calorific value of the consumption of impedance, while also ensure the speed of charging, both can be effectively reduced
Calorific value, and the efficiency of charging can be improved, while can also be used in combination with existing high pass scheme, user experience is provided
Sense, and compatible design is realized with current general charging scheme
Second embodiment:
Illustrate below with reference to specific charging circuit configuration, the present embodiment provides the working principles of charging circuit.
As shown in figure 5, being the circuit diagram of charging circuit provided in this embodiment, mainly there are charger 41, power supply pipe
Manage chip PMI 42, battery of mobile phone 43, PMOS tube P1-P4 44, triode Q1 45, charging management chip WP 46 and necessity
Resistance capacitance 47 form.Wherein, charger 41 is the external devices connecting with power supply interface.
In the present embodiment, the impedance of the branch where charging chip management WP 46 can be than power management chip PMI 42
The impedance of the branch at place is small much smaller, needs to obtain better transfer efficiency according to charging circuit, that is, to reduce access
Loss consider, reduce the impedance in route, the principle is as follows:
When battery capacity is too low, the battery for crossing low battery is not suitable for charging using high current, and high current can be to electricity
Pond generates loss, so not using this programme to charge in low battery, still uses high pass trickle charge, i.e. low speed
Charging, to be protected to greatest extent to battery；
When battery capacity is moderate, charging chip management WP route can be automatically switched to and carry out low-voltage, high-current charging, it is right
Sketch in the control of the module: charging chip management WP can acquire the voltage and charging current of battery in real time, work as cell voltage
When (such as 3.8V) and charging current (such as 1.5A) meet the condition of charging chip management WP, control logic will turn to charging chip
Manage WP and charger interactive identification, and and unconventional charger and high pass interactive identification, certainly, these operations are both needed to
It wants to support on software, when battery and external condition meet the threshold condition of charging chip management WP, the grid of triode Q1 is defeated
High potential out, so that triode Q1 is connected, it will so that the base stage of the PMOS tube P1-P4 of two and two strings keeps low potential,
The source electrode of PMOS tube P1-P4 obtains a high potential by resistance R3, so that PMOS tube P1-P4 is connected, VBUS will at this time
Battery is plugged in by PMOS, either high pass charging or the design of this programme, need to finally pass through high pass power supply
Charging metal-oxide-semiconductor Q4 in managing chip PMI can since whole line impedance of charging chip management WP route can be lower than high pass
To reduce loss, improve efficiency by bigger electric current.
Illustrate: the design for the bleeder circuit that 1.R1 and R2 is formed is in order to which charging chip management WP examines voltage of VBUS
It surveys；
2. the design of the bleeder circuit of resistance R4 and R5 composition be in order to provide suitable grid voltage to triode so that
Triode Q1 will not work in cut-off region；
3. the implementation of this programme is needed in charger built-in one chips W P1 corresponding with charging management chip WP, mesh
Before be to carry out data interaction, guarantee that charging circuit is switched to the side charging management chip WP, rather than high pass sides；
4. the route that the detection of either high pass identifying schemes or the charging management chip side of this programme use D+, D-
Signal identifies that certainly, the signal of two kinds of identifying schemes still D+, D- transmission also will be different, needs on software in order not to collide
Accomplish whenever can only identify one such charging；
5. the purpose using two two concatenated PMOS tube P1-P4 of parallel connection is to form the shunting of high current, single metal-oxide-semiconductor is prevented
It burns out.
By the realization of above-mentioned charging circuit, calorific value is effectively reduced, can be used in combination with high pass scheme, user is provided
Experience sense, and compatible design is realized with current general charging scheme.
3rd embodiment:
It is the structural schematic diagram of mobile terminal provided in this embodiment, which includes above-described embodiment referring to Fig. 6
One to two charging circuit provided, which, which can also be, adds one on the basis of existing quick-charging circuit structure
A lesser charging paths of impedance.Based on the mobile terminal in figure, passing through the charging circuit to the electricity on mobile terminal
When pond is charged, charge control method is as shown in fig. 7, its step is specific as follows:
S601 detects the electricity percentage of battery to be charged in the charge state；
S602, if judging the electricity percentage less than the first preset value, the battery to be charged is low battery state,
The first charging paths connected in the charging circuit charge；
S603, if judging, the electricity percentage is greater than or equal to the first preset value, and the battery to be charged is medium
More than state of charge, the second charging paths connected in the charging circuit charge.
In the present embodiment, when the charging circuit be used first charging paths charging when, it is described detection to
The electricity percentage of rechargeable battery, further includes:
Detect the charging current of first charging paths；
If the charging current meets the switching condition of second charging paths, by the charging circuit from connect institute
The state for stating the first charging paths is converted to the state for connecting second charging paths, by second charging paths to institute
State battery charging to be charged.
In the present embodiment, above-mentioned control method can also be realized by processor in Fig. 1 and memory, be logical
The code for being stored with realize each step function of this method in memory is crossed, is realized by executing the code to charging electricity
The control on road.
In conclusion the embodiment of the invention provides a kind of charging circuit and charge control method, mobile terminal, for existing
Some rapid charge circuit arrangements can bring apparent fever phenomenon, will affect the defect of user experience, by charging circuit
Two charging paths of upper setting, and the total impedance difference of two charging paths is larger, when the electricity of battery to be charged is lower,
It is charged using the biggish charging paths of impedance, if the electricity of battery to be charged is medium or above, selection switches to resistance
Lesser charging paths are resisted to charge, such mode can be reduced due to the increased calorific value of the consumption of impedance, simultaneously also
Calorific value not only can be effectively reduced in the speed that can guarantee charging, but also the efficiency of charging can be improved, at the same can also with it is existing
High pass scheme is used in combination, and provides user experience, and realize compatible design with current general charging scheme.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal (can be mobile phone, computer, service
Device, air conditioner or network equipment etc.) method that executes each embodiment of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (10)
1. a kind of charging circuit, which is characterized in that the charging circuit includes: power supply interface, and is connect respectively with the power supply
The first charging paths, the second charging paths and for controlling first charging paths or second charging paths of mouthful connection
The logic circuit of rechargeable battery charging is treated, wherein the total impedance of first charging paths is greater than second charging paths
Total impedance；
In charging, the electricity percentage of the charging circuit real-time detection battery to be charged；
If the electricity percentage is low battery state, the logic circuit connects first charging paths to described wait fill
Battery charges；
If the electricity percentage is medium state of charge or more, the logic circuit connects second charging paths
Or by the charging circuit from first charging paths switch to second charging paths to the battery to be charged into
Row charging.
2. charging circuit as described in claim 1, which is characterized in that second charging paths include being sequentially connected in series
Charging management chip WP, PMOS tube and triode Q1, and described charging management chip WP, PMOS are connected to by series/parallel
Subsidiary components between pipe and triode Q1.
3. charging circuit as claimed in claim 2, which is characterized in that during the charging process, the charging management chip WP is real
When acquire the electricity percentage of the battery to be charged and/or the charging current of first charging paths, if the electricity hundred
Point than and/or charging current meet the switching condition of the charging management chip WP, then control the logic circuit and convert to institute
State the work of the second charging paths.
4. charging circuit as claimed in claim 3, which is characterized in that the control logic circuit is converted to described second
Charging paths work
The triode Q1 is connected, the grid output high potential for controlling the triode Q1 realizes conducting, and keeps the PMOS
The low-potential state of the base stage of pipe, the source electrode of the PMOS tube are led by obtaining high potential realization after the subsidiary components
It is logical.
5. charging circuit as claimed in claim 4, which is characterized in that the PMOS tube is to be passed through in series and parallel by N number of PMOS tube
The PMOS tube combination that mode connects, N are more than or equal to 1.
6. charging circuit as described in any one in claim 1-5, which is characterized in that first charging paths include: power supply
Managing chip PMI and metal-oxide-semiconductor Q4；
The power management chip PMI is used to detect the electricity percentage of the battery to be charged, and according to the knot of detection
Fruit connects first charging paths and is charged by the metal-oxide-semiconductor Q4；
The metal-oxide-semiconductor Q4 is also connect with the output end of second charging paths, and the electric current of the second charging paths output is logical
The metal-oxide-semiconductor Q4 is crossed to charge to the battery to be charged.
7. charging circuit as claimed in claim 6, which is characterized in that the power supply interface is type-c charging interface, described
The electricity percentage of charging circuit real-time detection battery to be charged includes: by detecting the data in the type-c charging interface
The data of mouthful pin determine the electricity percentage of the battery to be charged.
8. a kind of mobile terminal, which is characterized in that including charging circuit as claimed in any one of claims 1 to 6 and battery, institute
It states battery to connect with first charging paths, second charging paths pass through the metal-oxide-semiconductor Q4 in first charging paths
It is connect with the battery.
9. a kind of charge control method is applied to such as the described in any item charging circuits of claim 1-7, which is characterized in that institute
The method of stating includes:
In the charge state, the electricity percentage of battery to be charged is detected；
If judging the electricity percentage less than the first preset value, the battery to be charged is low battery state, described in connection
The first charging paths in charging circuit charge；
If judge the electricity percentage be greater than or equal to the first preset value, the battery to be charged be medium state of charge with
On, the second charging paths connected in the charging circuit charge.
10. charge control method as claimed in claim 9, which is characterized in that when the charging circuit is used described
When one charging paths charge, the electricity percentage of the detection battery to be charged, further includes:
Detect the charging current of first charging paths；
If the charging current meets the switching condition of second charging paths, by the charging circuit from connecting described the
The state of one charging paths is converted to the state for connecting second charging paths, by second charging paths to it is described to
Rechargeable battery charging.
Priority Applications (1)
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| CN201811558359.5A CN109713746B (en) | 2018-12-19 | 2018-12-19 | Charging circuit, charging control method and mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811558359.5A CN109713746B (en) | 2018-12-19 | 2018-12-19 | Charging circuit, charging control method and mobile terminal |
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| CN109713746B CN109713746B (en) | 2023-01-13 |
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| CN111538477A (en) * | 2020-04-20 | 2020-08-14 | 佳缘科技股份有限公司 | Coarse grain correction method for improving randomness of output sequence |
| CN115133589A (en) * | 2021-03-24 | 2022-09-30 | 北京小米移动软件有限公司 | Charging and discharging system and terminal equipment |
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| CN109713746B (en) | 2023-01-13 |
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