CN106712179A - Method and device realizing reverse charging - Google Patents
Method and device realizing reverse charging Download PDFInfo
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- CN106712179A CN106712179A CN201611228630.XA CN201611228630A CN106712179A CN 106712179 A CN106712179 A CN 106712179A CN 201611228630 A CN201611228630 A CN 201611228630A CN 106712179 A CN106712179 A CN 106712179A
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- slave unit
- charging current
- charging
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- 238000007600 charging Methods 0.000 title claims abstract description 380
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000004891 communication Methods 0.000 claims description 29
- 230000005611 electricity Effects 0.000 description 33
- 230000006870 function Effects 0.000 description 15
- 230000015654 memory Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 230000006399 behavior Effects 0.000 description 4
- 230000002452 interceptive effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- H02J7/0072—
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
-
- 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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A method and a device realizing reverse charging are provided; the method comprises the following steps: determining charging current of a slave device; adjusting the output current of a main device reversely charging the slave device according to the determined charging current of the slave device. The method and device can reversely charge the slave device according to the determined charging current of the slave device, thus improving the reverse charging efficiency of the main device charging the slave device.
Description
Technical field
Present document relates to but be not limited to charging technique, espespecially a kind of method and device for realizing reverse charging.
Background technology
It is usually that (OTG is the abbreviation of On-The-Go, is using the OTG of main equipment that current mobile terminal carries out reverse charging
The technology that developed recently gets up, on December 18th, 2001 is announced by USB Implementers Forum, is mainly used in various
Connection between different equipment or mobile device) function carries out reverse charging for slave unit；For example, using the OTG functions of mobile phone,
Other electronic equipment reverse power supply are given, as long as so with the mobile phone of OTG functions, can serve as portable power source to other electronics
Equipment is charged.
The method of above-mentioned reverse charging, is typically used and can be have impact on the supply current of the fixation of compatible all slave units
The charge efficiency of slave unit.
The content of the invention
The following is the general introduction of the theme to describing in detail herein.This general introduction is not to limit the protection model of claim
Enclose.
The embodiment of the present invention provides a kind of method and device for realizing reverse charging, it is possible to increase the charging effect of reverse charging
Rate.
A kind of device for realizing reverse charging is the embodiment of the invention provides, including：Determining unit and adjustment unit；Its
In,
Determining unit is used for, and determines the charging current of slave unit；
Adjustment unit is used for, and according to the charging current of the slave unit for determining, adjustment main equipment is reversely filled to slave unit
The output current of electricity.
Optionally, the determining unit specifically for：
By the communication protocol compatible with the slave unit, the charging electricity of the slave unit is read from the slave unit
Stream.
Optionally, the determining unit specifically for：
External command is received, the charging current of the slave unit is determined according to the external command for receiving.
Optionally, the device also includes：
Recording unit：The slave unit and corresponding charging current of charging current are determined for recording；When connecting again
When connecing the slave unit of record, the charging current of record is directly sent to determining unit, so that determining unit is straight according to record
Connect the charging current for determining the slave unit.
Optionally, the device also includes：
Whether judging unit, the dump energy of the main equipment for determining to carry out the slave unit reverse charging is less than in advance
If percentage, and the judged result whether dump energy of main equipment is more than preset percentage is sent to adjustment unit；
The adjustment unit is additionally operable to, and the judging unit determines that the dump energy of the main equipment is less than default percentage
Than when, if carry out the slave unit of the reverse charging comprising two or more charging current, according to the first default plan
Slightly selecting other charging currents in addition to maximum charging current carries out the reverse charging of the slave unit；The judging unit
When determining that the dump energy of the main equipment is more than or equal to preset percentage, if carrying out the slave unit of the reverse charging
During comprising two or more charging current, according to the second preset strategy select one of charging current carry out it is described from
The reverse charging of equipment.
On the other hand, the embodiment of the present invention also provides a kind of method for realizing reverse charging, including：
Determine the charging current of slave unit；
According to the charging current of the slave unit for determining, adjustment main equipment carries out the output current of reverse charging to slave unit.
Optionally, the charging current for determining slave unit includes：
By the communication protocol compatible with the slave unit, the charging electricity of the slave unit is read from the slave unit
Stream.
Optionally, the charging current for determining slave unit includes：
External command is received, the charging current of the slave unit is determined according to the external command for receiving.
Optionally, the method also includes：
Record determines the slave unit and corresponding charging current of charging current；
When be again coupled to record the slave unit when, directly according to record the slave unit charging current carry out described in
Reverse charging.
Optionally, the method also includes：
It is determined that whether carrying out the dump energy of the main equipment of reverse charging to the slave unit less than preset percentage；
When determining that the dump energy of the main equipment is less than preset percentage, if carry out the reverse charging from setting
During for comprising two or more charging current, according to other of the first preset strategy selection in addition to maximum charging current
Charging current carries out the reverse charging of the slave unit；
When determining that the dump energy of the main equipment is more than or equal to preset percentage, if carrying out the reverse charging
Slave unit include two or more charging current when, select one of charging current according to the second preset strategy and enter
The reverse charging of the row slave unit.
Compared with correlation technique, technical scheme includes：Determine the charging current of slave unit；According to determining from setting
Standby charging current, adjustment main equipment carries out the output current of reverse charging to slave unit.The embodiment of the present invention, according to what is determined
The charging current of slave unit realizes reverse charging, and improve main equipment carries out the efficiency of reverse charging to slave unit.
After reading and understanding accompanying drawing and describing in detail, it can be appreciated that other aspects.
Brief description of the drawings
Fig. 1 is the hardware architecture diagram for realizing each optional mobile terminal of embodiment one of the invention；
Fig. 2 realizes the flow chart of the method for reverse charging for the embodiment of the present invention；
Fig. 3 is the User Interface schematic diagram for being arranged on main equipment；
Fig. 4 is the interactive interface schematic diagram that the embodiment of the present invention determines charging current according to dump energy；
Fig. 5 is the interactive interface schematic diagram that the embodiment of the present invention sets preset percentage；
Fig. 6 realizes the flow chart of the method for reverse charging for another embodiment of the present invention；
Fig. 7 realizes the structured flowchart of the device of reverse charging for the embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with accompanying drawing to the present invention
Embodiment be described in detail.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application
Feature can mutually be combined.
The mobile terminal of each embodiment of the invention is realized referring now to Description of Drawings.In follow-up description, use
For represent element such as " module ", " part " or " unit " suffix only for being conducive to explanation of the invention, itself
Not specific meaning.Therefore, " module " can be used mixedly with " part ".
Mobile terminal can be implemented in a variety of manners.For example, the terminal described in the present invention can include such as moving
Phone, smart phone, notebook computer, digit broadcasting receiver, PDA (personal digital assistant), PAD (panel computer), PMP
The mobile terminal of (portable media player), guider etc. and such as numeral TV, desktop computer etc. are consolidated
Determine terminal.Hereinafter it is assumed that terminal is mobile terminal.However, it will be understood by those skilled in the art that, except being used in particular for movement
Outside the element of purpose, construction according to the embodiment of the present invention can also apply to the terminal of fixed type.
Fig. 1 is that the hardware configuration for realizing each optional mobile terminal of embodiment one of the invention is illustrated.
Mobile terminal 1 00 can include user input unit 130, sensing unit 140, output unit 150, memory 160,
Interface unit 170, controller 180 and power subsystem 190 etc..Fig. 1 shows the mobile terminal with various assemblies, but should
What is understood is, it is not required that implement all components for showing.More or less component can alternatively be implemented.To be detailed below
The element of thin description mobile terminal.
User input unit 130 can generate key input data to control each of mobile terminal according to the order of user input
Plant operation.User input unit 130 allows the various types of information of user input, and can include keyboard, metal dome, touch
Plate (for example, detection due to being touched caused by resistance, pressure, electric capacity etc. change sensitive component), roller, rocking bar etc.
Deng.Especially, when touch pad is superimposed upon on display unit 151 in the form of layer, touch-screen can be formed.
Sensing unit 140 detects the current state of mobile terminal 1 00, (for example, mobile terminal 1 00 opens or closes shape
State), the presence or absence of the contact (that is, touch input) of the position of mobile terminal 1 00, user for mobile terminal 1 00, mobile terminal
The acceleration or deceleration movement of 100 orientation, mobile terminal 1 00 and direction etc., and generate for controlling mobile terminal 1 00
The order of operation or signal.For example, when mobile terminal 1 00 is embodied as sliding-type mobile phone, sensing unit 140 can be sensed
The sliding-type phone is opened or closed.In addition, sensing unit 140 can detect power subsystem 190 whether provide electric power or
Whether person's interface unit 170 couples with external device (ED).
Interface unit 170 is connected the interface that can pass through with mobile terminal 1 00 as at least one external device (ED).For example,
External device (ED) can include wired or wireless head-band earphone port, external power source (or battery charger) port, wired or nothing
Line FPDP, 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..Identification module can be that storage uses each of mobile terminal 1 00 for verifying user
Kind of information and subscriber identification module (UIM), client identification module (SIM), Universal Subscriber identification module (USIM) can be included
Etc..In addition, the device (hereinafter referred to as " identifying device ") with identification module can take the form of smart card, therefore, know
Other device can be connected via port or other attachment means with mobile terminal 1 00.Interface unit 170 can be used for reception and come from
The input (for example, data message, electric power etc.) of the external device (ED) and input that will be received is transferred in mobile terminal 1 00
One or more elements can be used for transmitting data between mobile terminal and external device (ED).
In addition, when mobile terminal 1 00 is connected with external base, interface unit 170 can serve as allowing by it by electricity
Power provides to the path of mobile terminal 1 00 from base or can serve as allowing the various command signals being input into from base to pass through it
It is transferred to the path of mobile terminal.Be can serve as recognizing that mobile terminal is from the various command signals or electric power of base input
The no signal being accurately fitted within base.Output unit 150 is configured to provide defeated with vision, audio and/or tactile manner
Go out signal (for example, audio signal, vision signal, alarm signal, vibration signal etc.).
Output unit 150 can include display unit 151.Display unit 151 is processed in may be displayed on mobile terminal 1 00
Information.For example, when mobile terminal 1 00 is in telephone calling model, display unit 151 can show and converse or other are logical
The related user interface (UI) of letter (for example, text messaging, multimedia file download etc.) or graphic user interface
(GUI).When mobile terminal 1 00 is in video calling pattern or image capture mode, display unit 151 can show capture
Image and/or reception image, the UI or GUI etc. that show video or image and correlation function.
Meanwhile, when display unit 151 and touch pad in the form of layer it is superposed on one another to form touch-screen when, display unit
151 can serve as input unit and output device.Display unit 151 can include liquid crystal display (LCD), thin film transistor (TFT)
In LCD (TFT-LCD), Organic Light Emitting Diode (OLED) display, flexible display, three-dimensional (3D) display etc. at least
It is a kind of.Some in these displays may be constructed such that transparence to allow user to be watched from outside, and this is properly termed as transparent
Display, typical transparent display can be, for example, TOLED (transparent organic light emitting diode) display etc..According to specific
Desired implementation method, mobile terminal 1 00 can include two or more display units (or other display devices), for example, moving
Dynamic terminal can include outernal display unit (not shown) and inner display unit (not shown).Touch-screen can be used to detect touch
Input pressure and touch input position and touch input area.
Memory 160 can store software program for the treatment and control operation performed by controller 180 etc., Huo Zheke
Temporarily to store oneself data (for example, telephone directory, message, still image, video etc.) through exporting or will export.And
And, memory 160 can store the vibration of various modes on being exported when touching and being applied to touch-screen and audio signal
Data.
Memory 160 can include the storage medium of at least one type, and the storage medium includes flash memory, hard disk, many
Media card, card-type memory (for example, SD or DX memories etc.), random access storage device (RAM), static random-access storage
Device (SRAM), read-only storage (ROM), Electrically Erasable Read Only Memory (EEPROM), programmable read only memory
(PROM), magnetic storage, disk, CD etc..And, mobile terminal 1 00 can perform memory with by network connection
The network storage device cooperation of 160 store function.
The overall operation of the generally control mobile terminal of controller 180.For example, controller 180 is performed and voice call, data
Communication, video calling etc. related control and treatment.In addition, controller 180 can be included for reproducing (or playback) many matchmakers
The multi-media module 181 of volume data, multi-media module 181 can be constructed in controller 180, or can be structured as and control
Device 180 is separated.Controller 180 can be with execution pattern identifying processing, the handwriting input that will be performed on the touchscreen or picture
Draw input and be identified as character or image.
Power subsystem 190 receives external power or internal power under the control of controller 180 and provides operation each unit
Appropriate electric power needed for part and component.
Various implementation methods described herein can be with use such as computer software, hardware or its any combination of calculating
Machine computer-readable recording medium is implemented.Implement for hardware, implementation method described herein can be by using application-specific IC
(ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), scene can
Programming gate array (FPGA), processor, controller, microcontroller, microprocessor, it is designed to perform function described herein
At least one in electronic unit is implemented, and in some cases, such implementation method can be implemented in controller 180.
For software implementation, the implementation method of such as process or function can with allow to perform the single of at least one function or operation
Software module is implemented.Software code can be come by the software application (or program) write with any appropriate programming language
Implement, software code can be stored in memory 160 and performed by controller 180.
So far, oneself according to its function through describing mobile terminal.Below, for the sake of brevity, will description such as folded form,
Slide type mobile terminal in various types of mobile terminals of board-type, oscillating-type, slide type mobile terminal etc. is used as showing
Example.Therefore, the present invention can be applied to any kind of mobile terminal, and be not limited to slide type mobile terminal.
Based on above-mentioned mobile terminal hardware configuration, the inventive method each embodiment is proposed.
Fig. 2 realizes the flow chart of the method for reverse charging for the embodiment of the present invention, as shown in Fig. 2 including：
Step 200, the charging current for determining slave unit；
Optionally, the embodiment of the present invention determines that the charging current of slave unit includes：
By the communication protocol compatible with slave unit, the charging current of slave unit is read from slave unit.
Here, the embodiment of the present invention first connects main equipment and slave unit by carrying out the data wire of reverse charging
Come, main equipment is detected when being connected with slave unit, into OTG patterns；After main equipment enters OTG patterns, boost electricity was entered in inside
Road (switch DC booster circuit), converts battery voltage to 5 volts of voltages of (V), and (VBUS lines are main frames by VBUS
(HOST) power line that/hub (HUB) is powered to USB (USB, Universal Serial Bus) equipment) it is defeated
Go out to slave unit；After slave unit detects the voltage on VBUS, by the communication protocol compatible with slave unit, from slave unit
Read the charging current of slave unit.For example, communicated by way of (D+) and post-tensioning (D-) are pushed away preceding, read from slave unit
The charging current of slave unit；When being communicated by D+ and D- modes, the agreement of communication can be carried out by those skilled in the art
Self-defined, such as D+ and D- for low level and continue during the first preset duration (such as 1S), determine that charging current is first grade
Position (for example, 500 milliamperes (mA)), if D+ is height, D- is low, and continues the second preset duration, determines that charging current is second gear
(for example, 1000 milliamperes of position；First preset duration can be with identical, it is also possible to different；The preset duration of embodiment of the present invention equipment first
When equal with the second preset duration, determination is made a distinction by the level height of D+ and D-.The embodiment of the present invention can have master to set
The standby charging current that slave unit is read from slave unit；The charging electricity of reverse charging can also be sent to main equipment from slave unit
Stream；The charging current of slave unit can also be read by the device being connected with main equipment and slave unit, is sent out after reading charging current
Toward main equipment.Embodiment of the present invention charging current can make a distinction according to gear, and the mode that gear is distinguished can be by this area
Technical staff is analyzed determination according to the charging relevant information of slave unit.The embodiment of the present invention can also be main using other compatibilities
The communication protocol of equipment and slave unit, the communication between main equipment and slave unit can be realized by compatible communication protocol, made
Main equipment can obtain the charging current of slave unit, and then carry out reverse charging to slave unit.
Optionally, the embodiment of the present invention determines that the charging current of slave unit includes：
External command is received, the charging current of slave unit is determined according to the external command for receiving.
Here, the embodiment of the present invention can determine the charging current of slave unit by external command, for example, main equipment and from
After equipment connection, external command is received by the User Interface for setting on the master, determine the charging electricity of slave unit
Stream；Or, the User Interface by equipment in slave unit sends the numerical information of charging current to main equipment.Fig. 3 is
The User Interface schematic diagram of main equipment is arranged on, as shown in figure 3, pointing out main equipment user on User Interface：From
Equipment is realized being connected with main equipment, please select to carry out the charging current of reverse charging for slave unit, and user can be defeated manually
Entering main equipment carries out the numerical values recited of the charging current of reverse charging for slave unit.In addition, if having determined filling for slave unit
Electric current, the embodiment of the present invention can redefine the charging current of slave unit according to the external command for receiving, main equipment according to
The charging current for redefining carries out reverse charging to slave unit.
Step 201, the charging current according to the slave unit for determining, adjustment main equipment carry out the defeated of reverse charging to slave unit
Go out electric current.
The embodiment of the present invention, using main equipment OTG (OTG is the abbreviation of On-The-Go, is the technology that developed recently gets up,
On December 18th, 2001 is announced by USB Implementers Forum, is mainly used in a variety of equipment or mobile device
Between connection) reverse charging principle, to different slave units, according to the charging current for determining, reverse charging is carried out to slave unit.This
Inventive embodiments can more accurately and efficiently realize reverse charging.Improving user carries out the efficiency of reverse charging and uses
Experience.
Optionally, present invention method also includes：
Record determines the slave unit and corresponding charging current of charging current；
When record slave unit is again coupled to, directly the charging current of the slave unit according to record carries out reverse charging.
It should be noted that the embodiment of the present invention is recorded to the slave unit for carrying out reverse charging, carry out again anti-
During to charging, charging current can quickly be determined according to record content, improve the charge efficiency of reverse charging.Slave unit is entered
Row record can be recorded including the product type to slave unit, product identification or product certification information etc., and these information are used
In it is determined that specific slave unit or the product type of slave unit charging current can be determined；For example, slave unit 1 and slave unit 2 are adopted
Use identical charging current, and the equipment that they belong to same type but different model, if record model is, it is necessary to each
Individual slave unit is recorded, and if the type of recording equipment, then can reduce the content of record, while accelerate matching speed,
Improve the charge efficiency of reverse charging.
Optionally, present invention method also includes：
It is determined that whether carrying out the dump energy of the main equipment of reverse charging to slave unit less than preset percentage；
When determining that the dump energy of main equipment is less than preset percentage, if the slave unit for carrying out reverse charging includes two
When kind or two or more charging currents, according to other charging currents of the first preset strategy selection in addition to maximum charging current
Carry out the reverse charging of slave unit；
When determining that the dump energy of main equipment is more than or equal to preset percentage, if carrying out the slave unit of reverse charging
During comprising two or more charging current, selecting one of charging current according to the second preset strategy carries out slave unit
Reverse charging.
It should be noted that after the embodiment of the present invention judges the size of main equipment dump energy, according to the remaining electricity of main equipment
Amount selection is the charging current of slave unit, so as to be balanced to the work of main equipment and the work of slave unit；If i.e. main
Equipment dump energy is less, and other for providing in addition to maximum charging current for slave unit according to present invention method fill
Electric current, charges to slave unit, and now, slave unit can realize that electricity is supplemented by reverse charging, and main equipment can also
Ensure service behaviour to a certain extent；Here, the charging current of selection can with when slave unit allow minimum charging current,
Can also when other gears electric current, determination can be analyzed according to dump energy；The embodiment of the present invention can also be by user
The size of selection charging current is determined by external command.In addition, when main equipment dump energy is more than or equal to preset percentage,
The charging current of reverse charging can be carried out to slave unit according to the selection of the second preset strategy.Present invention method can set
Multiple preset percentages are put, the piecewise function constituted to different weight percentage, using corresponding charging current, by main equipment to from setting
It is standby to realize reverse charging.The embodiment of the present invention can also choose whether to carry out the electricity that charges according to residual current according to default switch
The selection of stream.Fig. 4 is the interactive interface schematic diagram that the embodiment of the present invention determines charging current according to dump energy, as shown in figure 4,
Switched by boolean, whether user can determine charging current according to dump energy on the master, once it is determined that according to residue
When electricity determines charging current, existing method determines dump energy in being referred to correlation technique.The embodiment of the present invention may be used also
It is configured with to preset percentage；Fig. 5 is the interactive interface schematic diagram that the embodiment of the present invention sets preset percentage, such as Fig. 5
It is shown, the numerical value of preset percentage can be set by Text Entry set in advance, different user can be according to main equipment
Total electricity and equipment service condition set.
The embodiment of the present invention, reverse charging is realized according to the charging current of slave unit for determining, improve main equipment to from
Equipment carries out the efficiency of reverse charging.
Fig. 6 realizes the flow chart of the method for reverse charging for another embodiment of the present invention, as shown in fig. 6, including：
Step 600, the charging current for determining slave unit；
Optionally, the embodiment of the present invention determines that the charging current of slave unit includes：
By the communication protocol compatible with slave unit, the charging current of slave unit is read from slave unit.
Here, the embodiment of the present invention first connects main equipment and slave unit by carrying out the data wire of reverse charging
Come, main equipment is detected when being connected with slave unit, into OTG patterns；After main equipment enters OTG patterns, boost electricity was entered in inside
Road (switch DC booster circuit), converts battery voltage to 5 volts of voltages of (V), and (VBUS lines are main frames by VBUS
(HOST) power line that/hub (HUB) is powered to USB (USB, Universal Serial Bus) equipment) it is defeated
Go out to slave unit；After slave unit detects the voltage on VBUS, by the communication protocol compatible with slave unit, from slave unit
Read the charging current of slave unit.For example, communicated by way of (D+) and post-tensioning (D-) are pushed away preceding, read from slave unit
The charging current of slave unit；When being communicated by D+ and D- modes, the agreement of communication can be carried out by those skilled in the art
Self-defined, such as D+ and D- for low level and continue during the first preset duration (such as 1S), determine that charging current is first grade
Position (for example, 500 milliamperes (mA)), if D+ is height, D- is low, and continues the second preset duration, determines that charging current is second gear
(for example, 1000 milliamperes of position；First preset duration can be with identical, it is also possible to different；The preset duration of embodiment of the present invention equipment first
When equal with the second preset duration, determination is made a distinction by the level height of D+ and D-.The embodiment of the present invention can have master to set
The standby charging current that slave unit is read from slave unit；The charging electricity of reverse charging can also be sent to main equipment from slave unit
Stream；The charging current of slave unit can also be read by the device being connected with main equipment and slave unit, is sent out after reading charging current
Toward main equipment.Embodiment of the present invention charging current can make a distinction according to gear, and the mode that gear is distinguished can be by this area
Technical staff is analyzed determination according to the charging relevant information of slave unit.The embodiment of the present invention can also be main using other compatibilities
The communication protocol of equipment and slave unit, the communication between main equipment and slave unit can be realized by compatible communication protocol, made
Main equipment can obtain the charging current of slave unit, and then carry out reverse charging to slave unit.
Optionally, the embodiment of the present invention determines that the charging current of slave unit includes：
External command is received, the charging current of slave unit is determined according to the external command for receiving.
Here, the embodiment of the present invention can determine the charging current of slave unit by external command, for example, main equipment and from
After equipment connection, external command is received by the User Interface for setting on the master, determine the charging electricity of slave unit
Stream；Or, the User Interface by equipment in slave unit sends the numerical information of charging current to main equipment.In addition,
If it have been determined that the charging current of slave unit, the embodiment of the present invention can redefine slave unit according to the external command for receiving
Charging current, main equipment carries out reverse charging according to the charging current for redefining to slave unit.
Step 601, the charging current according to the slave unit for determining, adjustment main equipment carry out the defeated of reverse charging to slave unit
Go out electric current.
The embodiment of the present invention, using main equipment OTG (OTG is the abbreviation of On-The-Go, is the technology that developed recently gets up,
On December 18th, 2001 is announced by USB Implementers Forum, is mainly used in a variety of equipment or mobile device
Between connection) reverse charging principle, to different slave units, according to the charging current for determining, reverse charging is carried out to slave unit.This
Inventive embodiments can more accurately and efficiently realize reverse charging.Improving user carries out the efficiency of reverse charging and uses
Experience.
Step 602, record determine the slave unit and corresponding charging current of charging current, when being again coupled to record
Slave unit when, directly the charging current of the slave unit according to record carries out reverse charging.
It should be noted that the embodiment of the present invention is recorded to the slave unit for carrying out reverse charging, carry out again anti-
During to charging, charging current can quickly be determined according to record content, improve the charge efficiency of reverse charging.Slave unit is entered
Row record can be recorded including the product type to slave unit, product identification or product certification information etc., and these information are used
In it is determined that specific slave unit or the product type of slave unit charging current can be determined；For example, slave unit 1 and slave unit 2 are adopted
Use identical charging current, and the equipment that they belong to same type but different model, if record model is, it is necessary to each
Individual slave unit is recorded, and if the type of recording equipment, then can reduce the content of record, while accelerate matching speed,
Improve the charge efficiency of reverse charging.
Optionally, present invention method also includes：
It is determined that whether carrying out the dump energy of the main equipment of reverse charging to slave unit less than preset percentage；
When determining that the dump energy of main equipment is less than preset percentage, if the slave unit for carrying out reverse charging includes two
When kind or two or more charging currents, according to other charging currents of the first preset strategy selection in addition to maximum charging current
Carry out the reverse charging of slave unit；
When determining that the dump energy of main equipment is more than or equal to preset percentage, if carrying out the slave unit of reverse charging
During comprising two or more charging current, selecting one of charging current according to the second preset strategy carries out slave unit
Reverse charging.
It should be noted that after the embodiment of the present invention judges the size of main equipment dump energy, according to the remaining electricity of main equipment
Amount selection is the charging current of slave unit, so as to be balanced to the work of main equipment and the work of slave unit；If i.e. main
Equipment dump energy is less, and other for providing in addition to maximum charging current for slave unit according to present invention method fill
Electric current, charges to slave unit, and now, slave unit can realize that electricity is supplemented by reverse charging, and main equipment can also
Ensure service behaviour to a certain extent；Here, the charging current of selection can with when slave unit allow minimum charging current,
Can also when other gears electric current, determination can be analyzed according to dump energy；The embodiment of the present invention can also be by user
The size of selection charging current is determined by external command.In addition, when main equipment dump energy is more than or equal to preset percentage,
The charging current of reverse charging can be carried out to slave unit according to the selection of the second preset strategy.Present invention method can set
Multiple preset percentages are put, the piecewise function constituted to different weight percentage, using corresponding charging current, by main equipment to from setting
It is standby to realize reverse charging.The embodiment of the present invention can also choose whether to carry out the electricity that charges according to residual current according to default switch
The selection of stream.
The embodiment of the present invention, reverse charging is realized according to the charging current of slave unit for determining, improve main equipment to from
Equipment carries out the efficiency of reverse charging.
Fig. 7 realizes the structured flowchart of the device of reverse charging for the embodiment of the present invention, as shown in fig. 7, comprises：Determining unit
And adjustment unit；Wherein,
Determining unit is used for, and determines the charging current of slave unit；
Optionally, determining unit specifically for：
By the communication protocol compatible with slave unit, the charging current of slave unit is read from slave unit.
Here, the embodiment of the present invention first connects main equipment and slave unit by carrying out the data wire of reverse charging
Come, main equipment is detected when being connected with slave unit, into OTG patterns；After main equipment enters OTG patterns, boost electricity was entered in inside
Road (switch DC booster circuit), converts battery voltage to 5 volts of voltages of (V), and (VBUS lines are main frames by VBUS
(HOST) power line that/hub (HUB) is powered to USB (USB, Universal Serial Bus) equipment) it is defeated
Go out to slave unit；After slave unit detects the voltage on VBUS, by the communication protocol compatible with slave unit, from slave unit
Read the charging current of slave unit.For example, communicated by way of (D+) and post-tensioning (D-) are pushed away preceding, read from slave unit
The charging current of slave unit；When being communicated by D+ and D- modes, the agreement of communication can be carried out by those skilled in the art
Self-defined, such as D+ and D- for low level and continue during the first preset duration (such as 1S), determine that charging current is first grade
Position (for example, 500 milliamperes (mA)), if D+ is height, D- is low, and continues the second preset duration, determines that charging current is second gear
(for example, 1000 milliamperes of position；First preset duration can be with identical, it is also possible to different；The preset duration of embodiment of the present invention equipment first
When equal with the second preset duration, determination is made a distinction by the level height of D+ and D-.The embodiment of the present invention can have master to set
The standby charging current that slave unit is read from slave unit；The charging electricity of reverse charging can also be sent to main equipment from slave unit
Stream；The charging current of slave unit can also be read by the device being connected with main equipment and slave unit, is sent out after reading charging current
Toward main equipment.Embodiment of the present invention charging current can make a distinction according to gear, and the mode that gear is distinguished can be by this area
Technical staff is analyzed determination according to the charging relevant information of slave unit.The embodiment of the present invention can also be main using other compatibilities
The communication protocol of equipment and slave unit, the communication between main equipment and slave unit can be realized by compatible communication protocol, made
Main equipment can obtain the charging current of slave unit, and then carry out reverse charging to slave unit.
Optionally, determining unit specifically for：
External command is received, the charging current of slave unit is determined according to the external command for receiving.
Here, the embodiment of the present invention can determine the charging current of slave unit by external command, for example, main equipment and from
After equipment connection, external command is received by the User Interface for setting on the master, determine the charging electricity of slave unit
Stream；Or, the User Interface by equipment in slave unit sends the numerical information of charging current to main equipment.In addition,
If it have been determined that the charging current of slave unit, the embodiment of the present invention can redefine slave unit according to the external command for receiving
Charging current, main equipment carries out reverse charging according to the charging current for redefining to slave unit.
Adjustment unit is used for, and according to the charging current of the slave unit for determining, adjustment main equipment is reversely filled to slave unit
The output current of electricity.
The embodiment of the present invention, using main equipment OTG (OTG is the abbreviation of On-The-Go, is the technology that developed recently gets up,
On December 18th, 2001 is announced by USB Implementers Forum, is mainly used in a variety of equipment or mobile device
Between connection) reverse charging principle, to different slave units, according to the charging current for determining, reverse charging is carried out to slave unit.This
Inventive embodiments can more accurately and efficiently realize reverse charging.Improving user carries out the efficiency of reverse charging and uses
Experience.
Optionally, embodiment of the present invention device also includes：
Recording unit：The slave unit and corresponding charging current of charging current are determined for recording；When connecting again
When connecing the slave unit of record, the charging current of record is directly sent to determining unit, so that determining unit is directly true according to record
Determine the charging current of slave unit.
It should be noted that the embodiment of the present invention is recorded to the slave unit for carrying out reverse charging, carry out again anti-
During to charging, charging current can quickly be determined according to record content, improve the charge efficiency of reverse charging.Slave unit is entered
Row record can be recorded including the product type to slave unit, product identification or product certification information etc., and these information are used
In it is determined that specific slave unit or the product type of slave unit charging current can be determined；For example, slave unit 1 and slave unit 2 are adopted
Use identical charging current, and the equipment that they belong to same type but different model, if record model is, it is necessary to each
Individual slave unit is recorded, and if the type of recording equipment, then can reduce the content of record, while accelerate matching speed,
Improve the charge efficiency of reverse charging.
Optionally, embodiment of the present invention device also includes：
Whether judging unit, the dump energy of the main equipment for determining to carry out slave unit reverse charging is less than default hundred
Divide ratio, and the judged result whether dump energy of main equipment is more than preset percentage is sent to adjustment unit；
Adjustment unit is additionally operable to, when judging unit determines that the dump energy of main equipment is less than preset percentage, if entered
When the slave unit of row reverse charging includes two or more charging current, according to the selection of the first preset strategy except maximum fills
Other charging currents beyond electric current carry out the reverse charging of slave unit；Judging unit determines that the dump energy of main equipment is big
When preset percentage, if carry out the slave unit of reverse charging comprising two or more charging current, press
Selecting one of charging current according to the second preset strategy carries out the reverse charging of slave unit.
It should be noted that after the embodiment of the present invention judges the size of main equipment dump energy, according to the remaining electricity of main equipment
Amount selection is the charging current of slave unit, so as to be balanced to the work of main equipment and the work of slave unit；If i.e. main
Equipment dump energy is less, and other for providing in addition to maximum charging current for slave unit according to present invention method fill
Electric current, charges to slave unit, and now, slave unit can realize that electricity is supplemented by reverse charging, and main equipment can also
Ensure service behaviour to a certain extent；Here, the charging current of selection can with when slave unit allow minimum charging current,
Can also when other gears electric current, determination can be analyzed according to dump energy；The embodiment of the present invention can also be by user
The size of selection charging current is determined by external command.In addition, when main equipment dump energy is more than or equal to preset percentage,
The charging current of reverse charging can be carried out to slave unit according to the selection of the second preset strategy.Present invention method can set
Multiple preset percentages are put, the piecewise function constituted to different weight percentage, using corresponding charging current, by main equipment to from setting
It is standby to realize reverse charging.The embodiment of the present invention can also choose whether to carry out the electricity that charges according to residual current according to default switch
The selection of stream.
It should be noted that embodiment of the present invention device can be set on the master, it is also possible to be arranged on main equipment and
Between slave unit, for example, it is arranged in the process chip of data wire.
The embodiment of the present invention, reverse charging is realized according to the charging current of slave unit for determining, improve main equipment to from
Equipment carries out the efficiency of reverse charging.
The embodiment of the present invention also provides a kind of device for realizing reverse charging, including：Determining unit, judging unit, adjustment
Unit and recording unit；Wherein,
Determining unit is used for, and determines the charging current of slave unit；
Optionally, determining unit specifically for：
By the communication protocol compatible with slave unit, the charging current of slave unit is read from slave unit.
Here, the embodiment of the present invention first connects main equipment and slave unit by carrying out the data wire of reverse charging
Come, main equipment is detected when being connected with slave unit, into OTG patterns；After main equipment enters OTG patterns, boost electricity was entered in inside
Road (switch DC booster circuit), converts battery voltage to 5 volts of voltages of (V), and (VBUS lines are main frames by VBUS
(HOST) power line that/hub (HUB) is powered to USB (USB, Universal Serial Bus) equipment) it is defeated
Go out to slave unit；After slave unit detects the voltage on VBUS, by the communication protocol compatible with slave unit, from slave unit
Read the charging current of slave unit.For example, communicated by way of (D+) and post-tensioning (D-) are pushed away preceding, read from slave unit
The charging current of slave unit；When being communicated by D+ and D- modes, the agreement of communication can be carried out by those skilled in the art
Self-defined, such as D+ and D- for low level and continue during the first preset duration (such as 1S), determine that charging current is first grade
Position (for example, 500 milliamperes (mA)), if D+ is height, D- is low, and continues the second preset duration, determines that charging current is second gear
(for example, 1000 milliamperes of position；First preset duration can be with identical, it is also possible to different；The preset duration of embodiment of the present invention equipment first
When equal with the second preset duration, determination is made a distinction by the level height of D+ and D-.The embodiment of the present invention can have master to set
The standby charging current that slave unit is read from slave unit；The charging electricity of reverse charging can also be sent to main equipment from slave unit
Stream；The charging current of slave unit can also be read by the device being connected with main equipment and slave unit, is sent out after reading charging current
Toward main equipment.Embodiment of the present invention charging current can make a distinction according to gear, and the mode that gear is distinguished can be by this area
Technical staff is analyzed determination according to the charging relevant information of slave unit.The embodiment of the present invention can also be main using other compatibilities
The communication protocol of equipment and slave unit, the communication between main equipment and slave unit can be realized by compatible communication protocol, made
Main equipment can obtain the charging current of slave unit, and then carry out reverse charging to slave unit.
Optionally, determining unit specifically for：
External command is received, the charging current of slave unit is determined according to the external command for receiving.
Here, the embodiment of the present invention can determine the charging current of slave unit by external command, for example, main equipment and from
After equipment connection, external command is received by the User Interface for setting on the master, determine the charging electricity of slave unit
Stream；Or, the User Interface by equipment in slave unit sends the numerical information of charging current to main equipment.In addition,
If it have been determined that the charging current of slave unit, the embodiment of the present invention can redefine slave unit according to the external command for receiving
Charging current, main equipment carries out reverse charging according to the charging current for redefining to slave unit.
Whether judging unit, the dump energy of the main equipment for determining to carry out slave unit reverse charging is less than default hundred
Divide ratio, and the judged result whether dump energy of main equipment is more than preset percentage is sent to adjustment unit；
Adjustment unit is used for, and according to the charging current of the slave unit for determining, adjustment main equipment is reversely filled to slave unit
The output current of electricity.When judging unit determines that the dump energy of main equipment is less than preset percentage, if carrying out reverse charging
Slave unit when including two or more charging current, according to the selection of the first preset strategy in addition to maximum charging current
Other charging currents carry out the reverse charging of slave unit；Judging unit determines the dump energy of main equipment more than or equal to pre-
If default according to second if carry out the slave unit of reverse charging comprising two or more charging current during percentage
Policy selection goes out one of charging current carries out the reverse charging of slave unit.
It should be noted that after the embodiment of the present invention judges the size of main equipment dump energy, according to the remaining electricity of main equipment
Amount selection is the charging current of slave unit, so as to be balanced to the work of main equipment and the work of slave unit；If i.e. main
Equipment dump energy is less, and other for providing in addition to maximum charging current for slave unit according to present invention method fill
Electric current, charges to slave unit, and now, slave unit can realize that electricity is supplemented by reverse charging, and main equipment can also
Ensure service behaviour to a certain extent；Here, the charging current of selection can with when slave unit allow minimum charging current,
Can also when other gears electric current, determination can be analyzed according to dump energy；The embodiment of the present invention can also be by user
The size of selection charging current is determined by external command.In addition, when main equipment dump energy is more than or equal to preset percentage,
The charging current of reverse charging can be carried out to slave unit according to the selection of the second preset strategy.Present invention method can set
Multiple preset percentages are put, the piecewise function constituted to different weight percentage, using corresponding charging current, by main equipment to from setting
It is standby to realize reverse charging.The embodiment of the present invention can also choose whether to carry out the electricity that charges according to residual current according to default switch
The selection of stream.
The embodiment of the present invention, using main equipment OTG (OTG is the abbreviation of On-The-Go, is the technology that developed recently gets up,
On December 18th, 2001 is announced by USB Implementers Forum, is mainly used in a variety of equipment or mobile device
Between connection) reverse charging principle, to different slave units, according to the charging current for determining, reverse charging is carried out to slave unit.This
Inventive embodiments can more accurately and efficiently realize reverse charging.Improving user carries out the efficiency of reverse charging and uses
Experience.
Recording unit is used for, and record determines the slave unit and corresponding charging current of charging current；When connecting again
When connecing the slave unit of record, the charging current of record is directly sent to determining unit, so that determining unit is directly true according to record
Determine the charging current of slave unit.
It should be noted that the embodiment of the present invention is recorded to the slave unit for carrying out reverse charging, carry out again anti-
During to charging, charging current can quickly be determined according to record content, improve the charge efficiency of reverse charging.Slave unit is entered
Row record can be recorded including the product type to slave unit, product identification or product certification information etc., and these information are used
In it is determined that specific slave unit or the product type of slave unit charging current can be determined；For example, slave unit 1 and slave unit 2 are adopted
Use identical charging current, and the equipment that they belong to same type but different model, if record model is, it is necessary to each
Individual slave unit is recorded, and if the type of recording equipment, then can reduce the content of record, while accelerate matching speed,
Improve the charge efficiency of reverse charging.
It should be noted that embodiment of the present invention device can be set on the master, it is also possible to be arranged on main equipment and
Between slave unit, for example, it is arranged in the process chip of data wire.
The embodiment of the present invention, reverse charging is realized according to the charging current of slave unit for determining, improve main equipment to from
Equipment carries out the efficiency of reverse charging.
One of ordinary skill in the art will appreciate that all or part of step in the above method can be instructed by program
Related hardware (such as processor) is completed, and described program can be stored in computer-readable recording medium, such as read-only storage,
Disk or CD etc..Alternatively, all or part of step of above-described embodiment can also be come using one or more integrated circuits
Realize.Correspondingly, each the module/unit in above-described embodiment can be realized in the form of hardware, such as by integrated electricity
Realize its corresponding function in road, it would however also be possible to employ the form of software function module is realized, for example, is stored in by computing device
Program/instruction in memory realizes its corresponding function.The present invention is not restricted to the hardware and software of any particular form
With reference to.
Although disclosed herein implementation method as above, described content be only readily appreciate the present invention and use
Implementation method, is not limited to the present invention.Technical staff in any art of the present invention, is taken off the present invention is not departed from
On the premise of the spirit and scope of dew, any modification and change, but the present invention can be carried out in the form and details implemented
Scope of patent protection, must be still defined by the scope of which is defined in the appended claims.
Claims (10)
1. a kind of device for realizing reverse charging, it is characterised in that including：Determining unit and adjustment unit；Wherein,
Determining unit is used for, and determines the charging current of slave unit；
Adjustment unit is used for, and according to the charging current of the slave unit for determining, adjustment main equipment carries out reverse charging to slave unit
Output current.
2. device according to claim 1, it is characterised in that the determining unit specifically for：
By the communication protocol compatible with the slave unit, the charging current of the slave unit is read from the slave unit.
3. device according to claim 1, it is characterised in that the determining unit specifically for：
External command is received, the charging current of the slave unit is determined according to the external command for receiving.
4. the device according to any one of claims 1 to 3, it is characterised in that the device also includes：
Recording unit：The slave unit and corresponding charging current of charging current are determined for recording；When be again coupled to note
During the slave unit of record, the charging current of record is directly sent to determining unit, so that determining unit is directly true according to record
The charging current of the fixed slave unit.
5. the device according to any one of claims 1 to 3, it is characterised in that the device also includes：
Whether judging unit, the dump energy of the main equipment for determining to carry out the slave unit reverse charging is less than default hundred
Divide ratio, and the judged result whether dump energy of main equipment is more than preset percentage is sent to adjustment unit；
The adjustment unit is additionally operable to, and the judging unit determines that the dump energy of the main equipment is less than preset percentage
When, if carry out the slave unit of the reverse charging comprising two or more charging current, according to the first preset strategy
Selecting other charging currents in addition to maximum charging current carries out the reverse charging of the slave unit；The judging unit is true
When the dump energy for making the main equipment is more than or equal to preset percentage, if carrying out the slave unit bag of the reverse charging
During containing two or more charging current, according to the second preset strategy select one of charging current carry out it is described from setting
Standby reverse charging.
6. a kind of method for realizing reverse charging, it is characterised in that including：
Determine the charging current of slave unit；
According to the charging current of the slave unit for determining, adjustment main equipment carries out the output current of reverse charging to slave unit.
7. method according to claim 6, it is characterised in that the charging current of the determination slave unit includes：
By the communication protocol compatible with the slave unit, the charging current of the slave unit is read from the slave unit.
8. method according to claim 6, it is characterised in that the charging current of the determination slave unit includes：
External command is received, the charging current of the slave unit is determined according to the external command for receiving.
9. the method according to any one of claim 6~8, it is characterised in that the method also includes：
Record determines the slave unit and corresponding charging current of charging current；
When the slave unit of record is again coupled to, directly the charging current of the slave unit according to record carries out described reverse
Charge.
10. the method according to any one of claim 6~8, it is characterised in that the method also includes：
It is determined that whether carrying out the dump energy of the main equipment of reverse charging to the slave unit less than preset percentage；
When determining that the dump energy of the main equipment is less than preset percentage, if carrying out the slave unit bag of the reverse charging
During containing two or more charging current, other chargings according to the selection of the first preset strategy in addition to maximum charging current
Electric current carries out the reverse charging of the slave unit；
Determine the main equipment dump energy be more than or equal to preset percentage when, if carry out the reverse charging from
When equipment includes two or more charging current, selecting one of charging current according to the second preset strategy carries out institute
State the reverse charging of slave unit.
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| CN201611228630.XA CN106712179B (en) | 2016-12-27 | 2016-12-27 | Method and device for realizing reverse charging |
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| CN201611228630.XA CN106712179B (en) | 2016-12-27 | 2016-12-27 | Method and device for realizing reverse charging |
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| CN107309880A (en) * | 2017-07-06 | 2017-11-03 | 优必选教育（深圳）有限公司 | A kind of anthropomorphic robot device, control system and its control method |
| CN107329520A (en) * | 2017-06-12 | 2017-11-07 | 北京小米移动软件有限公司 | USB interface connection method, equipment and the system of mobile terminal |
| CN108631401A (en) * | 2018-05-23 | 2018-10-09 | 北京小米移动软件有限公司 | Charging circuit, method, electronic equipment and storage medium |
| CN108881630A (en) * | 2018-06-11 | 2018-11-23 | 中国联合网络通信集团有限公司 | reverse charging management method, device and terminal |
| CN110502382A (en) * | 2019-08-26 | 2019-11-26 | Oppo（重庆）智能科技有限公司 | TYPE-C interface test method, device, storage medium and electronic equipment |
| CN110545499A (en) * | 2019-05-16 | 2019-12-06 | 珠海市杰理科技股份有限公司 | Communication method, communication device, chip of communication device, equipment to be charged and system |
| EP3598604A3 (en) * | 2018-07-17 | 2020-04-15 | Beijing Xiaomi Mobile Software Co., Ltd. | Reverse charging device, and method and device for regulating reverse charging current |
| CN111416403A (en) * | 2020-03-26 | 2020-07-14 | 北京小米移动软件有限公司 | Reverse wired charging circuit, reverse wired charging control method, terminal, and medium |
| CN112928787A (en) * | 2019-12-06 | 2021-06-08 | 北京小米移动软件有限公司 | Charging circuit, electronic equipment, charging control method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107329520A (en) * | 2017-06-12 | 2017-11-07 | 北京小米移动软件有限公司 | USB interface connection method, equipment and the system of mobile terminal |
| CN107309880A (en) * | 2017-07-06 | 2017-11-03 | 优必选教育（深圳）有限公司 | A kind of anthropomorphic robot device, control system and its control method |
| CN108631401A (en) * | 2018-05-23 | 2018-10-09 | 北京小米移动软件有限公司 | Charging circuit, method, electronic equipment and storage medium |
| CN108881630B (en) * | 2018-06-11 | 2021-08-17 | 中国联合网络通信集团有限公司 | Reverse charging management method and device and terminal |
| CN108881630A (en) * | 2018-06-11 | 2018-11-23 | 中国联合网络通信集团有限公司 | reverse charging management method, device and terminal |
| EP3598604A3 (en) * | 2018-07-17 | 2020-04-15 | Beijing Xiaomi Mobile Software Co., Ltd. | Reverse charging device, and method and device for regulating reverse charging current |
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| CN112928787A (en) * | 2019-12-06 | 2021-06-08 | 北京小米移动软件有限公司 | Charging circuit, electronic equipment, charging control method and device |
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| CN106712179B (en) | 2020-02-04 |
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