CN108631401A - Charging circuit, method, electronic equipment and storage medium - Google Patents
Charging circuit, method, electronic equipment and storage medium Download PDFInfo
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- CN108631401A CN108631401A CN201810499409.0A CN201810499409A CN108631401A CN 108631401 A CN108631401 A CN 108631401A CN 201810499409 A CN201810499409 A CN 201810499409A CN 108631401 A CN108631401 A CN 108631401A
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- electronic equipment
- charging
- circuit
- interface
- charging circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
-
- 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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Present disclose provides a kind of charging circuit, method, electronic equipment and storage mediums, belong to terminal applies field.Charging circuit includes：Application processor AP, power circuit and output port；The input terminal of AP is used to connect the charging interface of the first electronic equipment, and the output end of AP is connected with the input terminal of power circuit, and AP is for controlling the charging current that first the second electronic equipment of electronic equipment pair charges；The output end of power circuit is connected with the input terminal of output port, and the output end of output port is used to connect the charging interface of the second electronic equipment, and the interface of the second electronic equipment is identified as charging downstream interface CDP by power circuit for the first electronic equipment.Due to configuring the second electronic equipment to CDP.According to the regulation of USB bc1.2 agreements, the charging current of CDP is 1.5A, and therefore, the first electronic equipment can be charged with the second electronic equipment of charging current pair of 1.5A, greatly improve charge efficiency.
Description
Technical field
This disclosure relates to terminal applies field more particularly to a kind of charging circuit, method, electronic equipment and storage medium.
Background technology
The portable electronic devices such as existing mobile phone, tablet computer since charge storage ability is limited, charging problems always by
To the concern of user.When user goes out, mobile power can be carried to ensure the normal continuation of the journey of electronic equipment.But user may
The case where leaving behind mobile power, then user often miss important thing because of that can not charge in time outdoor.In order to
It solves the problems, such as that electronic equipment cannot charge in time in outdoor, occurs the electronic equipment with reverse charging function on the market.
It is that other electronic equipments to charge is needed to charge that electronic equipment, which can be used as power supply,.
Current charging circuit includes AP (Application Processor, application processor) and port (output ends
Mouthful), the input terminal of AP is used to connect the charging interface of the first electronic equipment, and the output end of AP is connected with the input terminal of port,
The output end of port is used to connect the charging interface of the second electronic equipment.When passing through first the second electronic equipment of electronic equipment pair
When being charged, the input terminal of AP is connected to the charging interface of the first electronic equipment, the output end of port is connected into the second electronics
The charging interface of equipment, to which the second electronic equipment is configured to SDP (Standard Downstream Port, standard down
Interface).
However according to USB (Universal Serial Bus, universal serial bus) standard《battery charging
specification1.2》The electric current of the regulation of agreement, the ports SDP is limited within 500mA.Therefore, the first electronic equipment
It can only be charged with the second electronic equipment of size of current pair of maximum 500mA, therefore charging rate is slow, efficiency is low.
Invention content
A kind of charging circuit of disclosure offer, method, electronic equipment and storage medium, to improve charge efficiency, institute
It is as follows to state technical solution：
According to the first aspect of the embodiments of the present disclosure, a kind of charging circuit is provided, the charging circuit includes：Using processing
Device AP, power circuit and output port；
The input terminal of the AP is used to connect the charging interface of the first electronic equipment, the output end of the AP and the power supply
The input terminal of circuit is connected, and the AP is used to control the charging electricity that second electronic equipment of the first electronic equipment pair charges
Stream；
The output end of the power circuit is connected with the input terminal of the output port, and the output end of the output port is used
In the charging interface for connecting the second electronic equipment, the power circuit sets second electronics for first electronic equipment
Standby interface is identified as charging downstream interface CDP.
In the embodiments of the present disclosure, due to by accessing power circuit in the charging circuit, so as to by the second electricity
Sub- device configuration is CDP.According to the regulation of USB bc1.2 agreements, the charging current of CDP is 1.5A, therefore, the first electronic equipment
It can be charged with the second electronic equipment of charging current pair of 1.5A, greatly improve charge efficiency.
In a possible realization method, the charging circuit further includes：Control switch；
One input terminal of the control switch is connected with the output end of the power circuit, and the control switchs another
A input terminal is connected with the output end of the AP, and the output end of the control switch is connected with the input terminal of the output port.
In the embodiments of the present disclosure, the setting control switch in the charging circuit, can be realized by control switch and be connect
Energization source circuit, to realize that first the second electronic equipment of electronic equipment pair charges by the charging circuit.Pass through the control
System switch can also interrupting power circuit, to realize charge to the first electronic equipment.Therefore, by the charging circuit
Middle setting control switch enriches charging circuit so that the charging circuit has the function of charging and reverse charging two
Function.
In another possible realization method, the charging circuit further includes：Power supply, the power supply and institute
The input terminal for stating power circuit is connected.
In the embodiments of the present disclosure, power supply is set in the charging circuit, so that the parasitism in power circuit
The reverse bias of diode circuit disconnects, and eliminates the influence of capacitance, ensure that the accurate of the bc1.2 protocol detections identification of USB
Fixed and data communicate eye diagram quality.
In another possible realization method, the power circuit includes parasitic diode circuit, the power supply electricity
The voltage in source is not less than the reverse bias voltage of the parasitic diode circuit.
In the embodiments of the present disclosure, the voltage of supply voltage is not less than the reverse bias voltage of parasitic diode circuit, from
And can determine that the reverse bias of the parasitic diode circuit is fully disconnected, further improve detection accuracy and data communication
Eye diagram quality.
In another possible realization method, the charging circuit further includes：Movable OTG circuits；
The input end grounding of the OTG circuits, the output end of the OTG circuits and the input terminal phase of the output port
Even.
In the embodiments of the present disclosure, by the way that OTG circuits are arranged in the charging circuit, and passing through the first electronic equipment pair
When second electronic equipment is charged, the level of the high OTG circuits is set, to reduce by the first electronic equipment from sleeping to waking up out
Existing fluctuation.
In another possible realization method, the power circuit is TPS2547 chips.
In the embodiments of the present disclosure, which can be TPS2547 chips, the TPS2547 chips be it is independent and at
This low chip, to reduce the complexity and cost of charging circuit.
In another possible realization method, the charging circuit is reverse charging circuit, and first electronics is set
For charging to first electronic equipment, the charging interface of first electronics is additionally operable to described standby charging interface
Second electronic equipment charges.
In the embodiments of the present disclosure, which is reverse charging circuit, and the charging interface of the first electronic equipment was both
It may be implemented to charge to itself, can also realize charged to other equipment (namely electric discharge) namely the charging circuit
It is not the charging circuit of mobile power, the charging effect to charge to the second electronic equipment can be improved by the charging circuit
Rate.
In another possible realization method, first electronic equipment is the electronic equipment that can be communicated.
In the embodiments of the present disclosure, it can realize that first the second electronic equipment of electronic equipment pair charges, the first electronics
Equipment is the electronic equipment that can be communicated namely first electronic equipment is not mobile power, and passes through charging electricity
Road can improve the charge efficiency to charge to the second electronic equipment.
According to the second aspect of the embodiment of the present disclosure, a kind of charging method is provided, the method is applied in first aspect
Or in the charging circuit of any possible realization method of first aspect, and the executive agent of the method is the first electronic equipment,
The method includes：
When detecting that the charging interface of the first electronic equipment connected is the input terminal of application processor AP, and the charging
When output port in circuit connects the charging interface of the second electronic equipment, determine through first electronic equipment to described the
Two electronic equipments charge；
When the power circuit in the charging circuit is switched on, and the interface of the AP in the charging circuit is standard down
When interface SDP, identify that the interface of second electronic equipment is charging downstream interface CDP；
When the interface for connecting second electronic equipment is CDP, by the AP control first electronic equipment with
First specified current flow size charges to second electronic equipment, and the first specified charging current is specified more than second to fill
Electric current, the second specified charging current are the corresponding charging currents of the SDP.
In the embodiments of the present disclosure, when charging by first the second electronic equipment of electronic equipment pair, charging is connected
Power circuit in circuit, so as to configure the second electronic equipment to CDP.According to the regulation of USBbc1.2 agreements, CDP's
Corresponding first specified charging current is more than the corresponding second specified charging currents of SDP, and therefore, the first electronic equipment passes through first
The second electronic equipment of specified current flow size pair charges, and greatly improves charge efficiency.
In a possible realization method, the determination is by first electronic equipment to second electronic equipment
After being charged, the method further includes：
By the control switch in the charging circuit, the power circuit is connected.
In the embodiments of the present disclosure, the setting control switch in the charging circuit, is switched by the control, connects the power supply
Circuit can configure the second electronic equipment to CDP to the SDP interfaces and power circuit of AP.
In another possible realization method, the method further includes：
When detect the AP input terminal connect external power supply, and first electronic equipment charging interface connection
When being output port, determination charges to the first electronic equipment；
By the external power supply, charge to first electronic equipment.
In the embodiments of the present disclosure, the setting control switch in the charging circuit, can be realized by control switch and be connect
Energization source circuit, to realize that first the second electronic equipment of electronic equipment pair charges by the charging circuit.Pass through the control
System switch can also interrupting power circuit, to realize charge to the first electronic equipment.Therefore, it is realized by controlling switch
Switching between two charging circuits.
In another possible realization method, after the first electronic equipment of the determination pair charges, the method
Further include：
By the control switch in the charging circuit, the power circuit is disconnected.
In the embodiments of the present disclosure, the setting control switch in the charging circuit, is switched by the control, disconnects the power supply
Circuit charges to the first electronic equipment to realize.
In another possible realization method, the method further includes：
During to first electronic equipment charge or charge to second electronic equipment, open
The power supply in the charging circuit is opened, the anti-of the parasitic diode in the power circuit is controlled by the power supply
To being biased off, the voltage of the power supply is more than the reverse bias voltage of the parasitic diode.
In the embodiments of the present disclosure, power supply is set in the charging circuit, so that the parasitism in power circuit
The reverse bias of diode circuit disconnects, and eliminates the influence of capacitance, ensure that the accurate of the bc1.2 protocol detections identification of USB
Fixed and data communicate eye diagram quality.
In another possible realization method, the method further includes：
When detecting that stopping charges to first electronic equipment or stopping is charged to the second electronic equipment, institute is closed
The power supply in charging circuit is stated, the reversed inclined of the parasitic diode in the power circuit is controlled by the power supply
Set closure.
The present disclosure embodies in, when stopping charging to the first electronic equipment or stop charging to the second electronic equipment
When, the power supply in the charging circuit is closed, to save the energy consumption of the first electronic equipment.
In another possible realization method, the determination sets second electronics by first electronic equipment
After being charged, the method further includes：
The level for setting the OTG circuits in the high charging circuit is set the high level and is set for reducing first electronics
The standby fluctuation occurred from sleeping to waking up.
In the embodiments of the present disclosure, by the way that OTG circuits are arranged in the charging circuit, and passing through the first electronic equipment pair
When second electronic equipment is charged, the level of the high OTG circuits is set, to reduce by the first electronic equipment from sleeping to waking up out
Existing fluctuation.
In another possible realization method, the method further includes：
When detecting that stopping charges to second electronic equipment, the level of the OTG circuits is set low.
In the embodiments of the present disclosure, when detecting that stopping charges to second electronic equipment, the electricity of OTG circuits is set low
It is flat, to save the energy consumption of the first electronic equipment.
According to the third aspect of the embodiment of the present disclosure, a kind of electronic equipment is provided, including：
Processor；
Memory for storing processor-executable instruction；
Wherein, the processor is configured as：
What it is when the charging interface connection for detecting the first electronic equipment is movable OTG cables, and the OTG cables is another
One end connect the second electronic equipment charging interface when, determine by first electronic equipment to second electronic equipment into
Row charging；
When the power circuit in the charging circuit is switched on, and the interface of the AP in the charging circuit is standard down
When interface SDP, determine that the interface that the OTG cables connect second electronic equipment is charging downstream interface CDP；
When the interface for connecting second electronic equipment is CDP, by the AP control first electronic equipment with
First specified current flow size charges to second electronic equipment, and the first specified charging current is specified more than second to fill
Electric current, the second specified charging current are the corresponding charging currents of the SDP.
In the embodiments of the present disclosure, when charging by first the second electronic equipment of electronic equipment pair, charging is connected
Power circuit in circuit, so as to configure the second electronic equipment to CDP.According to the regulation of USBbc1.2 agreements, CDP's
Corresponding first specified charging current is more than the corresponding second specified charging currents of SDP, and therefore, the first electronic equipment passes through first
The second electronic equipment of specified current flow size pair charges, and greatly improves charge efficiency.
According to the fourth aspect of the embodiment of the present disclosure, a kind of computer readable storage medium is provided, the computer can
It reads to be stored with instruction on storage medium, described instruction is executed by processor to complete second aspect or any possibility of second aspect
The charging method in realization method.
It should be understood that above general description and following detailed description is only exemplary and explanatory, not
The disclosure can be limited.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.
Fig. 1 is a kind of schematic diagram of charging circuit shown according to an exemplary embodiment；
Fig. 2 is the schematic diagram of another charging circuit shown according to an exemplary embodiment；
Fig. 3 is the schematic diagram of another charging circuit shown according to an exemplary embodiment；
Fig. 4 is the schematic diagram of another charging circuit shown according to an exemplary embodiment；
Fig. 5 is a kind of flow chart of charging method shown according to an exemplary embodiment；
Fig. 6 is the block diagram according to a kind of electronic equipment shown in an exemplary embodiment.
10 AP
11 power circuits
12 port
13 control switches
14 power supplies
15 OTG circuits
Specific implementation mode
To keep the purpose, technical scheme and advantage of the disclosure clearer, below in conjunction with attached drawing to disclosure embodiment party
Formula is described in further detail.
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all implementations consistent with this disclosure.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the disclosure.
The embodiment of the present disclosure provides a kind of charging circuit, and referring to Fig. 1, which includes：AP10, power circuit 11
With port12 (output port).The input terminal of AP10 is used to connect the charging interface of the first electronic equipment, the output end of AP10 and
The input terminal of power circuit 11 is connected, and the AP10 is for controlling the charging that first the second electronic equipment of electronic equipment pair charges
Electric current；The output end of power circuit 11 is connected with the input terminal of port12, and the output end of the port12 is for connecting the second electronics
The charging interface of equipment.
First electronic equipment is any electronic equipment for supporting reverse charging；For example, the first electronic equipment is to support reversely
Mobile phone or tablet computer of charging etc..Second electronic equipment is any electronic equipment being electrically charged；For example, the second electronic equipment
For mobile phone, tablet computer or wearable device etc..In addition, the standard SDP that power circuit 11 can be any combination AP10 can
The second electronic equipment that output port connects is identified as to the power circuit 11 of CDP, for example, power circuit 11 can be TPS cores
The model of piece, the TPS chips can be configured and change as needed, in the embodiments of the present disclosure, to the model of TPS chips
It is not especially limited；For example, the TPS chips can be TPS2547 etc..
In the embodiments of the present disclosure, when being charged by first the second electronic equipment of electronic equipment pair, by charging electricity
The input terminal of AP10 in road connects the charging interface of the first electronic equipment, and the output end of the port12 in charging circuit is connected
The charging interface of second electronic equipment, to realize that first the second electronic equipment of electronic equipment pair charges.Due to by
Power circuit 11 is accessed in the charging circuit, power circuit 11 identifies the interface of the second electronic equipment for the first electronic equipment
For charge downstream interface CDP, so as to identify the second electronic equipment be CDP.According to the regulation of USB bc1.2 agreements, CDP
Charging current be 1.5A, therefore, the first electronic equipment can be charged with the second electronic equipment of size of current pair of 1.5A, pole
The earth improves charge efficiency.
In a possible realization method, which can not only realize through first the second electricity of electronic equipment pair
Sub- equipment charges, additionally it is possible to which realization charges to the first electronic equipment.Correspondingly, referring to Fig. 2, which also wraps
It includes：Control switch 13；One input terminal of the control switch 13 is connected with the output end of power circuit 11, controls the another of switch 13
One input terminal is connected with the output end of AP10, and the output end of control switch 13 is connected with the input terminal of port12.Wherein, the control
It can be that USB is switched to make switch 13.
When realizing that first the second electronic equipment of electronic equipment pair charges by the charging circuit, control switch 13 is controlled
Turn-on power circuit 11 is also connected the circuit between power circuit 11 and port12, the line between AP10 and port12
Road disconnects.When charging to the first electronic equipment by charging circuit realization, 13 controlling power circuit 11 of switch is controlled
It disconnects, also disconnects the circuit between power circuit 11 and port12, the circuit between AP10 and port12 is connected.
It should be noted is that including parasitic diode in AP10, power circuit 11, control switch 13, port12
Circuit.Correspondingly, the anode of parasitic diode circuit in AP10 respectively with the parasitic diode circuit in power circuit 11
The anode of anode and the parasitic diode circuit in control switch 13 is connected, the cathode point of the parasitic diode circuit in AP10
Not with the cathode of the parasitic diode circuit in power circuit 11 and control switch 13 in parasitic diode circuit cathode
It is connected.The positive phase of the anode of parasitic diode circuit in power circuit 11 and the parasitic diode circuit in control switch 13
Even, the cathode phase of the cathode of the parasitic diode circuit in power circuit 11 and the parasitic diode circuit in control switch 13
Even.The anode of parasitic diode circuit in control switch 13 is connected with the anode of the parasitic diode circuit in port12, controls
The cathode of parasitic diode circuit in system switch 13 is connected with the cathode of the parasitic diode circuit in port12.
In a possible realization method, since power circuit 11 includes parasitic diode circuit, it can cause
Capacitive effect on power circuit 11 is to the signal waveform between the D+ and D- of parasitic diode.Therefore, referring to Fig. 3, the charging
Circuit further includes：Power supply 14, power supply 14 are connected with the input terminal of power circuit 11.
It charges to the first electronic equipment when detecting, or is carried out by first the second electronic equipment of electronic equipment pair
When charging, a power supply 14 is enabled on power circuit 11, also, the voltage of the power supply 14 is not less than power circuit
The bias voltage of the 11 parasitic diode circuits for including.The voltage of the power supply 14 can be configured and more as needed
Change, in the embodiments of the present disclosure, the voltage of the power supply 14 is not especially limited；For example, the voltage of the power supply 14
Can be 5V or 6V etc..In addition, in order to reduce energy consumption, the voltage of the power supply 14 can include equal to power circuit 11
Parasitic diode circuit bias voltage.
It should be noted is that charging to the first electronic equipment when detecting, or pass through the first electronic equipment
When charging to the second electronic equipment, a power supply 14 is enabled on the power circuit 11, so as to make the power supply
Parasitic diode reverse bias in circuit 11 disconnects, and eliminates the influence of capacitance, can ensure that the bc1.2 detections of USB are known in this way
Not and data communicate eye diagram quality.
It needs to illustrate on the other hand, when stopping passes through the first electronic equipment to the charging of the first electronic equipment, or stopping
When charging to the second electronic equipment, power supply 14 is closed, to optimize stand-by power consumption.
In another possible realization method, since there are one intrinsic bug meetings in sleep standby for the first electronic equipment
When causing to charge by first the second electronic equipment of electronic equipment pair, the phy power supplies 14 of USB are being slept to when waking up
It fluctuates, the fluctuation synchronous with phy power supplies occurs with the bc.2 of D- identification waveforms so as to cause D+, to influence CDP's
Identification.Therefore, referring to Fig. 4, which further includes OTG (On-The-Go, movable) circuit.The input of the OTG circuits 15
End ground connection, the output end of the OTG circuits 15 are connected with the input terminal of the port12.
It should be noted is that by when charging by first the second electronic equipment of electronic equipment pair, height is set
The level of the OTG circuits 15, when so as to solve the first electronic equipment from sleeping to waking up the D+ and D- of electronic equipment
Signal fluctuation, the identification so as to avoid signal fluctuation to CDP, to improve the identification accuracy of CDP.
Need to illustrate that on the other hand, which can be integrated in OTG cables.In addition, the charging circuit is anti-
To charging circuit, reverse charging circuit charges for first the second electronic equipment of electronic equipment pair, and the first electronic equipment
Charging interface can be used for charging to the first electronic equipment, can be also used for charging to the second electronic equipment.By
This can be improved by the charging circuit and be set to the second electronics as it can be seen that the charging circuit is not the charging circuit of mobile power
The standby charge efficiency to charge.Also, first electronic equipment is the electronic equipment that can be communicated.In addition, first
Electronic equipment is the electronic equipment that can be communicated namely first electronic equipment is not mobile power, and is filled by this
Circuit can improve the charge efficiency to charge to the second electronic equipment.
In the embodiments of the present disclosure, due to by accessing power circuit 11 in the charging circuit, so as to by second
Electronic equipment is configured to CDP.According to the regulation of USB bc1.2 agreements, the charging current of CDP is 1.5A, and therefore, the first electronics is set
It is standby to be charged with the second electronic equipment of charging current pair of 1.5A, greatly improve charge efficiency.
The alternative embodiment that any combination forms the disclosure may be used, herein no longer in above-mentioned all optional technical solutions
It repeats one by one.
Fig. 5 is a kind of flow chart of charging method shown according to an exemplary embodiment, and this method is applied fills above-mentioned
In circuit, the executive agent of this method can be the first electronic equipment, and the first electronic equipment is the electronic equipment of charging, and the
One electronic equipment is the electronic equipment that can be communicated.As shown in figure 5, including the following steps.
In step S501, the charging interface of first the first electronic equipment of electronic equipment pair is detected, when detecting this
What charging interface connected is the input terminal of AP, and the output port in charging circuit connects the charging interface of the second electronic equipment
When, execute step S502.
When needing to charge to the first electronic equipment, the charging interface of the first electronic equipment is connected USB line by user
The output end of the port of cable.When needing to charge by first the second electronic equipment of electronic equipment pair, user is electric by first
The input terminal of the charging interface connection AP of sub- equipment, the second electronic equipment is connected by the output end of port.Correspondingly, step S501
Can be：First electronic equipment is detected the charging interface, when the first electronic equipment detects the charging interface connecting line
When cable, the first electronic equipment is detected the cable；When the first electronic equipment detects that the cable is OTG cables, determine
Whether the other end for being the input terminal of AP, and then detecting the OTG cables of the charging interface connection of the first electronic equipment connects the
Two electronic equipments；When the other end of the OTG cables connects the second electronic equipment, determine that the output port in the charging circuit connects
Connect the charging interface of the second electronic equipment.When the first electronic equipment detects that the cable is USB cable, the first electronic equipment is true
The charging interface connection of fixed first electronic equipment is output port, executes step S506.
The step of first electronic equipment is detected the cable can be：First electronic equipment determines the interface of the cable
Type；When the interface type is the interface type of OTG cables, determine that the cable is OTG cables；When the interface type is USB
When the interface type of cable, determine that the cable is USB cable.
It should be noted is that the first electronic equipment can be every the charging interface of the first electronic equipment of predetermined period pair
It is detected；The predetermined period can be configured and change as needed, in the embodiments of the present disclosure, not make to predetermined period
It is specific to limit；For example, predetermined period can be 5s or 10s.
In step S502, when detect the first electronic equipment charging interface connect be application processor AP input
End, and when output port in charging circuit connects the charging interface of the second electronic equipment, the first electronic equipment are determined by the
One the second electronic equipment of electronic equipment pair charges.
In a possible realization method, the first electronic equipment, which determines, passes through first the second electronic equipment of electronic equipment pair
When being charged, the first electronic equipment is switched by the control in charging circuit, connects the power circuit.
It should be noted is that powering on circuit by the control switch control in the charging circuit or disconnecting electricity
Source circuit.Control switch includes 2 control valves, respectively the first control valve and the second control valve；First control valve is for connecing
Energization source circuit, the second control valve are used to connect the connection between AP and port.Correspondingly, the first electronic equipment passes through the electricity that charges
Control switch in road, the step of connecting the power circuit can be：First electronic equipment controls first in control switch
The state of control valve is to be closed, and the state of the second control valve is to disconnect.
It needs to illustrate on the other hand, according to the regulation of USB bc1.2 agreements, the charging current of the ports SDP is limited in
Within 500mA, and the charging circuit of the ports CDP can reach 1.5A, therefore, when the first electronic equipment is determined through the first electricity
When the second electronic equipment of sub- equipment pair charges, step S503 is executed, determines that OTG cables connect the end of the second electronic equipment
Mouthful.
In step S503, when the power circuit in the charging circuit is switched on, and the AP interfaces in the charging circuit are
When SDP, the first electronic equipment identifies that the interface of the second electronic equipment is CDP, executes step S504.
When the power circuit in the charging circuit is switched on, and the interface of AP is standard SDP, the first electronic equipment determines
The interface of second electronic equipment is CDP.When the power circuit in the charging circuit is disconnected (namely the AP in the charging circuit
Directly it is connected with port), the first electronic equipment determines that the interface of second electronic equipment is SDP.
In a possible realization method, due to the regulation according to USB bc1.2 agreements, the charging current of the ports SDP
It is limited within 500mA；Therefore, when the first electronic equipment determines that the port is the ports SDP, the first electronic equipment passes through the
Two the second electronic equipments of specified charging current pair charge, and the second specified charging current is not more than 500mA, and second refers to
Determining charging current can be configured and change as needed, in the embodiments of the present disclosure, not make to the second specified charging current
It is specific to limit；For example, the second specified charging current is 500mA or 400mA.
In step S504, when the interface for connecting the second electronic equipment is CDP, the first electronic equipment passes through AP controls the
One electronic equipment is charged with first the second electronic equipment of specified current flow size pair, and the first specified charging current is more than second and refers to
Determine charging current.
When the interface for connecting the second electronic equipment is CDP, the first electronic equipment is put with the first specified current flow size
Electricity, while the second electronic equipment is charged with the first specified current flow size.According to the regulation of USB bc1.2 agreements, the ports CDP
Corresponding charging current is 1.5A；Therefore, the first specified charging current is not more than 1.5A, and the first specified charging current can root
It is configured and changes according to needing, in the embodiments of the present disclosure, the first specified charging current is not especially limited；For example, the
One specified charging current can be 1.5A or 1.2A etc..
Since the first specified charging current is more than the second specified charging current, the first electronic equipment refers to by first
Determine the second electronic equipment of charging current pair to charge, charge efficiency can be improved.
It should be noted is that in order to save the electric energy of the first electronic equipment, the first electronic equipment refers to by first
During the second electronic equipment of constant current size pair charges, the first electronic device control system enters off-mode.When
When detecting that charging interface OTG cables are pulled out, the first electronic equipment restarting systems enter open state.
In step S505, the first electronic equipment sets the level of the OTG circuits in the high charging circuit, sets the high level and uses
In the fluctuation that the first electronic equipment of reduction is occurring from sleeping to waking up.
Since the first electronic equipment can cause there are one intrinsic bug through the first electronic equipment pair second in sleep standby
When electronic equipment is charged, USB phy power supplies are being slept to being fluctuated when waking up, so as to cause the bc.2 of D+ and D-
Identify that the fluctuation synchronous with phy power supplies occurs in waveform, to influence the identification of the ports CDP.Therefore, it is set by the first electronics
It is standby in the second electronic equipment charging process, setting the level of high OTG circuits, to reduce the wave of charging generation synchronous with power supply
It is dynamic, to improve the accuracy of charging identification.
In a possible realization method, when the first electronic equipment is detected through first the second electronics of electronic equipment pair
Equipment carries out in charging process, and the first electronic equipment can be with the level of the high OTG circuits of a disposed upright；Certainly, in order to save energy consumption, the
After one electronic equipment sets the level of high OTG circuits, the first electronic equipment is detected charging interface；When check stop pair
When second electronic equipment charges, the first electronic equipment sets low the level of OTG circuits, to save energy consumption.
In step S506, when detecting that the input terminal of AP connects external power supply, and the charging interface of the first electronic equipment
Connection be output port when, determination charge to the first electronic equipment, by first electronic equipment of external power supply pair into
Row charging.
When the input terminal of the AP connects external power supply, when what output port connected is the first electronic equipment, the first electronics is set
Standby determination charges to the first electronic equipment, is switched by the control in the charging circuit, the power circuit is disconnected, to make
The output end for obtaining AP is connected with the input terminal of port.Control switch includes the first control valve and the second control valve, correspondingly, the
One electronic equipment is switched by control in the charging circuit, and the step of disconnecting the power circuit can be：First electronic equipment
The state for controlling the first control valve in control switch is to disconnect, and the state of the second control valve is to be closed.
In this step, the first electronic equipment can specify the battery of the first electronic equipment of charging current pair with third
It charges；Third specifies charging current can be equal with the first specified charging current, can also be with the second specified charging current
It is equal, it can also be different from the first specified charging current and the second specified charging current.In the embodiments of the present disclosure, to third
Specified charging current and the magnitude relationship of the first specified charging current and the second specified charging current are not especially limited.For
Improving the charge efficiency of the first electronic equipment, third specifies charging current that can be more than the first specified charging current, also, the
Three specified charging currents can be configured and change as needed, in the embodiments of the present disclosure, charging current be specified to third
It is not especially limited.For example, it can be 2A or 2.5A etc. that third, which specifies charging current,.
In step s 507, it charges to the first electronic equipment, or to mistake that the second electronic equipment charges
Cheng Zhong, the first electronic equipment open the power supply in the charging circuit, pass through posting in the power supply controlling power circuit
The reverse bias of raw diode disconnects.
Since power circuit includes parasitic diode, the capacitance on power supply circuit can be caused to be responsive to D+'s and D- in this way
Signal waveform.Therefore, it charges, or during charging to the second electronic equipment, makes to the first electronic equipment
One power supply of power circuit is obtained, so that the reverse bias of parasitic diode disconnects, capacitive effect is eliminated, ensures in this way
The bc1.2 detections identification of USB and data communicate eye diagram quality, and then improve identification accuracy.Wherein, the electricity of power supply
Reverse bias voltage of the pressure more than parasitic diode.
In step S508, stops charging to the first electronic equipment when detecting or stop charging to the second electronic equipment
When, the first electronic equipment closes the power supply in the charging circuit, passes through the parasitism two in power supply controlling power circuit
The reverse bias of pole pipe is closed.
It should be noted that step S508 is optional step, namely stop to the charging of the first electronic equipment or stopping pair
When second electronic equipment charges, the power supply that is not turned off in the charging circuit.Certainly, in order to save power consumption, the first electronics
Equipment is detecting that the first electronic equipment closes when stopping charging to the first electronic equipment or stopping charging to the second electronic equipment
The power supply is closed, to save energy consumption.
In the embodiments of the present disclosure, when charging by first the second electronic equipment of electronic equipment pair, charging is connected
Power circuit in circuit, so as to configure the second electronic equipment to CDP.According to the regulation of USBbc1.2 agreements, CDP's
Corresponding first specified charging current is more than the corresponding second specified charging currents of SDP, and therefore, the first electronic equipment passes through first
The second electronic equipment of specified current flow size pair charges, and greatly improves charge efficiency.
Fig. 6 is the block diagram according to a kind of electronic equipment 600 shown in an exemplary embodiment.For example, electronic equipment 600 can
To be mobile phone, computer, digital broadcast terminal, messaging devices, game console, tablet device, Medical Devices are good for
Body equipment, personal digital assistant etc..
With reference to Fig. 6, electronic equipment 600 may include following one or more components：Processing component 602, memory 604,
Power supply module 606, multimedia component 608, audio component 610, the interface 612 of input/output (I/O), sensor module 614,
And communication component 616.
The integrated operation of 602 usual control electronics 600 of processing component, such as with display, call, data are logical
Letter, camera operation and record operate associated operation.Processing component 602 may include one or more processors 620 to hold
Row instruction, to perform all or part of the steps of the methods described above.In addition, processing component 602 may include one or more moulds
Block, convenient for the interaction between processing component 602 and other assemblies.For example, processing component 602 may include multi-media module, with
Facilitate the interaction between multimedia component 608 and processing component 602.
Memory 604 is configured as storing various types of data to support the operation in electronic equipment 600.These data
Example include instruction for any application program or method that are operated on electronic equipment 600, contact data, telephone directory
Data, message, picture, video etc..Memory 604 can by any kind of volatibility or non-volatile memory device or it
Combination realize, such as static RAM (SRAM), electrically erasable programmable read-only memory (EEPROM) is erasable
Except programmable read only memory (EPROM), programmable read only memory (PROM), read-only memory (ROM), magnetic memory, soon
Flash memory, disk or CD.
Power supply module 606 provides electric power for the various assemblies of electronic equipment 600.Power supply module 606 may include power supply pipe
Reason system, one or more power supplys and other generated with for electronic equipment 600, management and the associated component of distribution electric power.
Multimedia component 608 is included in the screen of one output interface of offer between the electronic equipment 600 and user.
In some embodiments, screen may include liquid crystal display (LCD) and touch panel (TP).If screen includes touch surface
Plate, screen may be implemented as touch screen, to receive input signal from the user.Touch panel includes one or more touches
Sensor is to sense the gesture on touch, slide, and touch panel.The touch sensor can not only sense touch or sliding
The boundary of action, but also detect duration and pressure associated with the touch or slide operation.In some embodiments,
Multimedia component 608 includes a front camera and/or rear camera.When electronic equipment 600 is in operation mode, such as clap
When taking the photograph pattern or video mode, front camera and/or rear camera can receive external multi-medium data.It is each preposition
Camera and rear camera can be a fixed optical lens system or have focusing and optical zoom capabilities.
Audio component 610 is configured as output and/or input audio signal.For example, audio component 610 includes a Mike
Wind (MIC), when electronic equipment 600 is in operation mode, when such as call model, logging mode and speech recognition mode, microphone
It is configured as receiving external audio signal.The received audio signal can be further stored in memory 604 or via logical
Believe that component 616 is sent.In some embodiments, audio component 610 further includes a loud speaker, is used for exports audio signal.
I/O interfaces 612 provide interface between processing component 602 and peripheral interface module, and above-mentioned peripheral interface module can
To be keyboard, click wheel, button etc..These buttons may include but be not limited to：Home button, volume button, start button and lock
Determine button.
Sensor module 614 includes one or more sensors, the state for providing various aspects for electronic equipment 600
Assessment.For example, sensor module 614 can detect the state that opens/closes of electronic equipment 600, the relative positioning of component, example
As the component be electronic equipment 600 display and keypad, sensor module 614 can also detect electronic equipment 600 or
The position change of 600 1 components of electronic equipment, the existence or non-existence that user contacts with electronic equipment 600, electronic equipment 600
The temperature change of orientation or acceleration/deceleration and electronic equipment 600.Sensor module 614 may include proximity sensor, be configured
For detecting the presence of nearby objects without any physical contact.Sensor module 614 can also include optical sensor,
Such as CMOS or ccd image sensor, for being used in imaging applications.In some embodiments, which may be used also
To include acceleration transducer, gyro sensor, Magnetic Sensor, pressure sensor or temperature sensor.
Communication component 616 is configured to facilitate the communication of wired or wireless way between electronic equipment 600 and other equipment.
Electronic equipment 600 can access the wireless network based on communication standard, such as WiFi, 2G or 3G or combination thereof.Show at one
In example property embodiment, communication component 616 receives broadcast singal or broadcast from external broadcasting management system via broadcast channel
Relevant information.In one exemplary embodiment, the communication component 616 further includes near-field communication (NFC) module, short to promote
Cheng Tongxin.For example, radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra wide band can be based in NFC module
(UWB) technology, bluetooth (BT) technology and other technologies are realized.
In the exemplary embodiment, electronic equipment 600 can be believed by one or more application special circuit (ASIC), number
Number processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD), field programmable gate array
(FPGA), controller, microcontroller, microprocessor or other electronic components are realized, for executing above-mentioned charging method.
In the exemplary embodiment, it includes the non-transitorycomputer readable storage medium instructed, example to additionally provide a kind of
Such as include the memory 604 of instruction, above-metioned instruction can be executed by the processor 620 of electronic equipment 600 to complete above-mentioned charging side
Method.For example, the non-transitorycomputer readable storage medium can be ROM, random access memory (RAM), CD-ROM, magnetic
Band, floppy disk and optical data storage devices etc..
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the disclosure
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and includes the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by following
Claim is pointed out.
It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by the accompanying claims.
Claims (18)
1. a kind of charging circuit, which is characterized in that the charging circuit includes：Application processor AP, power circuit and output end
Mouthful；
The input terminal of the AP is used to connect the charging interface of the first electronic equipment, the output end of the AP and the power circuit
Input terminal be connected, the AP is for controlling the charging current that second electronic equipment of the first electronic equipment pair charges；
The output end of the power circuit is connected with the input terminal of the output port, and the output end of the output port is for connecting
The charging interface of the second electronic equipment is connect, the power circuit is used for first electronic equipment by second electronic equipment
Interface is identified as charging downstream interface CDP.
2. charging circuit according to claim 1, which is characterized in that the charging circuit further includes：Control switch；
One input terminal of the control switch is connected with the output end of the power circuit, and another of the control switch is defeated
Enter end with the output end of the AP to be connected, the output end of the control switch is connected with the input terminal of the output port.
3. charging circuit according to claim 2, which is characterized in that the charging circuit further includes：Power supply, it is described
Power supply is connected with the input terminal of the power circuit.
4. charging circuit according to claim 3, which is characterized in that the power circuit includes parasitic diode electricity
Road, the voltage of the power supply are not less than the reverse bias voltage of the parasitic diode circuit.
5. charging circuit according to claim 1, which is characterized in that the charging circuit further includes：Movable OTG electricity
Road；
The output end of the input end grounding of the OTG circuits, the OTG circuits is connected with the input terminal of the output port.
6. according to claim 1-5 any one of them charging circuits, which is characterized in that the power circuit is TPS2547 cores
Piece.
7. charging circuit according to claim 1, which is characterized in that the charging circuit is reverse charging circuit, and institute
The charging interface for stating the first electronic equipment is used to charge to first electronic equipment, the charging interface of first electronics
It is additionally operable to charge to second electronic equipment.
8. charging circuit according to claim 1, which is characterized in that first electronic equipment can be communicated
Electronic equipment.
9. a kind of charging method, which is characterized in that the method is applied in any charging circuits of claim 1-8, and
The executive agent of the method is the first electronic equipment, the method includes：
When detecting that the charging interface of first electronic equipment connected is the input terminal of application processor AP, and the charging
When output port in circuit connects the charging interface of the second electronic equipment, determine through first electronic equipment to described the
Two electronic equipments charge；
When the power circuit in the charging circuit is switched on, and the interface of the AP in the charging circuit is standard down interface
When SDP, identify that the interface of second electronic equipment is charging downstream interface CDP；
When the interface for connecting second electronic equipment is CDP, first electronic equipment is controlled with first by the AP
Specified current flow size charges to second electronic equipment, and the first specified charging current is more than the second specified charging electricity
Stream, the second specified charging current are the corresponding charging currents of the SDP.
10. according to the method described in claim 9, it is characterized in that, the determination by first electronic equipment to described
After second electronic equipment is charged, the method further includes：
By the control switch in the charging circuit, the power circuit is connected.
11. according to the method described in claim 9, it is characterized in that, the method further includes：
When the input terminal connection external power supply for detecting the AP, and the charging interface connection of first electronic equipment is defeated
When exit port, determination charges to the first electronic equipment；
By the external power supply, charge to first electronic equipment.
12. according to the method for claim 11, which is characterized in that the first electronic equipment of the determination pair carries out charging it
Afterwards, the method further includes：
By the control switch in the charging circuit, the power circuit is disconnected.
13. according to the method described in claim 9 or 11, which is characterized in that the method further includes：
During to first electronic equipment charge or charge to second electronic equipment, institute is opened
The power supply in charging circuit is stated, the reversed inclined of the parasitic diode in the power circuit is controlled by the power supply
Disconnection is set, the voltage of the power supply is more than the reverse bias voltage of the parasitic diode.
14. according to the method for claim 13, which is characterized in that the method further includes：
When detecting that stopping charges to first electronic equipment or stopping is charged to the second electronic equipment, filled described in closing
Power supply in circuit, the reverse bias that the parasitic diode in the power circuit is controlled by the power supply close
It closes.
15. according to the method described in claim 9, it is characterized in that, the determination by first electronic equipment to described
After second electronic equipment is charged, the method further includes：
The level for setting the OTG circuits in the high charging circuit, set the high level for reduce first electronic equipment from
It sleeps to the fluctuation for waking up appearance.
16. according to the method for claim 15, which is characterized in that the method further includes：
When detecting that stopping charges to second electronic equipment, the level of the OTG circuits is set low.
17. a kind of electronic equipment, which is characterized in that including：
Processor；
Memory for storing processor-executable instruction；
Wherein, the processor is configured as：
When detect that the charging interface of the first electronic equipment connects is movable OTG cables, and the other end of the OTG cables
When connecting the charging interface of the second electronic equipment, determination fills second electronic equipment by first electronic equipment
Electricity；
When the power circuit in the charging circuit is switched on, and the interface of the AP in the charging circuit is standard down interface
When SDP, determine that the interface that the OTG cables connect second electronic equipment is charging downstream interface CDP；
When the interface for connecting second electronic equipment is CDP, first electronic equipment is controlled with first by the AP
Specified current flow size charges to second electronic equipment, and the first specified charging current is more than the second specified charging electricity
Stream, the second specified charging current are the corresponding charging currents of the SDP.
18. a kind of computer readable storage medium, which is characterized in that instruction is stored on the computer readable storage medium,
Described instruction is executed by processor to complete any one of claim 9-16 charging methods.
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| CN201810499409.0A CN108631401B (en) | 2018-05-23 | 2018-05-23 | Charging circuit, method, electronic device, and storage medium |
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|---|---|---|---|
| CN201810499409.0A CN108631401B (en) | 2018-05-23 | 2018-05-23 | Charging circuit, method, electronic device, and storage medium |
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