CN105426332A - Communication interface circuit, portable electronic device and electronic system - Google Patents
Communication interface circuit, portable electronic device and electronic system Download PDFInfo
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- CN105426332A CN105426332A CN201510713235.XA CN201510713235A CN105426332A CN 105426332 A CN105426332 A CN 105426332A CN 201510713235 A CN201510713235 A CN 201510713235A CN 105426332 A CN105426332 A CN 105426332A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
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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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- 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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a communication interface circuit. The communication interface circuit comprises: a power supply port, a grounding port, a first data port, a second data port and a shielding port. The communication interface circuit further comprises: a communication circuit connected with the first data port and the second data port; a primary charging circuit connected with the power supply port and the grounding port; and one or two auxiliary charging circuits. The communication interface circuit has a rapid charging mode and a prohibited rapid charging mode, when the rapid charging mode is allowed, the primary charging circuit and the one or two auxiliary charging circuits are charged by the power supply port, the grounding port, the first data port, the second data port and / or the shielding port; when the rapid charging mode is prohibited, the communication circuit can transfer data by the first data port and the second data port, and the primary charging circuit is charged by the power supply port and the grounding port. Compared with the prior art, the communication interface circuit provided by the present invention can support a more rapid charging for the battery.
Description
[technical field]
The present invention relates to battery charging field, particularly a kind of communication interface circuit, portable electric appts and electronic system supporting rapid charge.
[background technology]
At present along with modern electronic equipment (such as smart mobile phone, panel computer, Baffle Box of Bluetooth etc.) development, battery capacity is increasing, if still by traditional charging technique charging, then the duration of charging is oversize.User more and more pursues the shorter duration of charging.Adopt the switch-mode battery-charging circuit based on inductance to be used more and more widely, realize big current rapid charge.In order to improve charging rate further, need to improve existing charging technique.Interface mode popular is at present USB (UniversalSerialBus) interface, and the interface particularly connecting portable equipment is generally microUSB, and its advantage is that volume is little, is conducive to the miniaturization of modern electronic equipment.But because its volume is little, connecting line is wherein comparatively thin, its current density can not be too large, and this just causes current bottleneck.According to MicroUSB standard, the maximum current of general each line is 2A..General MicroUSB comprises five ports (i.e. corresponding 5 connecting lines) at present: power port VBUS, the first FPDP D+, the second FPDP D-, grounding ports GND, shielding port SN.In prior art, general power port VBUS provides power supply, and grounding ports GND provides earth potential, realizes charging.So just limiting maximum input current is 2A, thus limits maximum charging current.
Therefore, the communication interface circuit can supporting rapid charge proposing to improve is necessary.
[summary of the invention]
The object of the present invention is to provide a kind of communication interface circuit, portable electric appts and electronic system, it can support charging more fast to battery.
In order to solve the problem, according to an aspect of the present invention, the invention provides a kind of communication interface circuit, it comprises: power port, grounding ports, the first FPDP, the second FPDP and shielding port; The communicating circuit be connected with the second FPDP with the first FPDP; The main charging circuit be connected with grounding ports with power port; One or two auxiliary charging circuit.This communication interface circuit has permission fast charge mode and forbids fast charge mode, when allowing fast charge mode, described main charging circuit and one or two auxiliary charging circuit are charged to battery by power port, earth terminal, the first FPDP, the second FPDP and/or shielding port, when forbidding fast charge mode, described communicating circuit can by the first FPDP and the second FPDP transmission data, and described main charging circuit can be charged to battery by power port and earth terminal.
Further, when allowing fast charge mode, described communicating circuit makes one or two auxiliary charging circuit described start working, now the first FPDP and the second FPDP are not used further to transmit data, first FPDP, second FPDP and/or shielding port are used for transmitting one or two rechargeable electrical energy needed for auxiliary charging circuit described, when forbidding fast charge mode, described communicating circuit makes one or two auxiliary charging circuit described quit work, now the first FPDP and the second FPDP can be used in transmitting data, and can not be used for electric energy transmitting.
Further, described communicating circuit based on outside rapid charge enable signal effectively and invalidly determine whether that needs enter permission fast charge mode, or, allowing fast charge mode based on pre-defined rule batch (-type) and forbidding constantly switching between fast charge mode.When allowing fast charge mode, to make in described main charging circuit, one or two auxiliary charging circuit described one or more starts working according to pre-defined rule for described communicating circuit.
Further, described communication interface circuit also includes the 3rd change-over switch, described auxiliary charging circuit is one, described auxiliary charging circuit has power end, earth terminal and the charging output terminal for battery charging, the power end of described auxiliary charging circuit is connected with the first FPDP, the earth terminal of described auxiliary charging circuit is connected with the second FPDP by the 3rd change-over switch, when allowing fast charge mode, described communicating circuit controls the 3rd change-over switch conducting, now described auxiliary charging circuit can be charged to described battery by its charging output terminal according to the voltage in the first FPDP and the second FPDP, when forbidding fast charge mode, communicating circuit controls the 3rd change-over switch cut-off, now described communicating circuit can by the first FPDP and the second FPDP transmission data, described main charging circuit can be charged to battery by power port and earth terminal.
Further, described auxiliary charging circuit is two, be respectively the first auxiliary charging circuit and the second auxiliary charging circuit, first auxiliary charging circuit and the second auxiliary charging circuit all have power end, earth terminal and the charging output terminal for battery charging, the power end of the first auxiliary charging circuit is connected with the first FPDP, the earth terminal of the first auxiliary charging circuit is connected with grounding ports, the power end of the second auxiliary charging circuit is connected with the second FPDP, the earth terminal of the second auxiliary charging circuit is connected with grounding ports, described shielding port is connected with described grounding ports, when allowing fast charge mode, described communicating circuit can make the first auxiliary charging circuit and the second auxiliary charging circuit start working, described first auxiliary charging circuit can be charged to described battery by its charging output terminal according to the voltage in the first FPDP and grounding ports, described second auxiliary charging circuit can be charged to described battery by its charging output terminal according to the voltage in the second FPDP and grounding ports, when forbidding fast charge mode, described communicating circuit can by the first FPDP and the second FPDP transmission data, described main charging circuit can be charged to battery by power port and earth terminal.
Further, described communication interface circuit also comprises the 4th change-over switch and the 5th change-over switch.4th change-over switch is connected between grounding ports and the first FPDP, 5th change-over switch is connected between grounding ports and the second FPDP, described auxiliary charging circuit is two, be respectively the first auxiliary charging circuit and the second auxiliary charging circuit, first auxiliary charging circuit and the second auxiliary charging circuit all have power end, earth terminal and the charging output terminal for battery charging, the power end of the first auxiliary charging circuit is connected with described shielding port, the earth terminal of the first auxiliary charging circuit is connected with grounding ports, the power end of the second auxiliary charging circuit is connected with described shielding port, the earth terminal of the second auxiliary charging circuit is connected with grounding ports, when allowing fast charge mode, 4th change-over switch conducting, 5th change-over switch conducting, described communicating circuit makes the first auxiliary charging circuit and the second auxiliary charging circuit start working, described first auxiliary charging circuit can be charged to described battery by its charging output terminal according to the voltage in shielding port and grounding ports, described second auxiliary charging circuit can be charged to described battery by its charging output terminal according to the voltage in described shielding port and grounding ports, when forbidding fast charge mode, 4th change-over switch cut-off, 5th change-over switch cut-off, described communicating circuit can by the first FPDP and the second FPDP transmission data, described main charging circuit can be charged to battery by power port and earth terminal.
According to another aspect of the present invention, the present invention also provides a kind of communication interface circuit, it comprises: power port, grounding ports, first FPDP, second FPDP, the communicating circuit be connected with the second FPDP with the first FPDP, be connected to the first change-over switch between power port and the first FPDP, and the second change-over switch be connected between grounding ports and the second FPDP, first change-over switch is connected with described communicating circuit with the control end of the second change-over switch, this communication interface circuit has permission fast charge mode and forbids fast charge mode, when allowing fast charge mode, described communicating circuit controls the first change-over switch and the second change-over switch conducting, when forbidding fast charge mode, described communicating circuit controls the first change-over switch and the cut-off of the second change-over switch.
According to another aspect of the present invention, the present invention also provides a kind of communication interface circuit, it comprises: power port, grounding ports, first FPDP, second FPDP, shielding port, the communicating circuit be connected with the second FPDP with the first FPDP, be connected to the first change-over switch between power port and the first FPDP, and the second change-over switch be connected between power port and the second FPDP, described shielding port is connected with described grounding ports, first change-over switch is connected with described communicating circuit with the control end of the second change-over switch, this communication interface circuit has permission fast charge mode and forbids fast charge mode, when allowing fast charge mode, described communicating circuit controls the first change-over switch and the second change-over switch conducting, when forbidding fast charge mode, described communicating circuit controls the first change-over switch and the cut-off of the second change-over switch.
According to another aspect of the present invention, the present invention also provides a kind of communication interface circuit, it comprises: power port, grounding ports, first FPDP, second FPDP, shielding port, the communicating circuit be connected with the second FPDP with the first FPDP, be connected to the 3rd change-over switch between power port and shielding port, be connected to the first change-over switch between grounding ports and the first FPDP, and the second change-over switch be connected between grounding ports and the second FPDP, first change-over switch, second change-over switch is connected with described communicating circuit with the control end of the 3rd change-over switch, this communication interface circuit has permission fast charge mode and forbids fast charge mode, when allowing fast charge mode, described communicating circuit controls the first change-over switch, second change-over switch and the 3rd change-over switch conducting, when forbidding fast charge mode, described communicating circuit controls the first change-over switch, second change-over switch and the cut-off of the 3rd change-over switch.
According to another aspect of the present invention, the invention provides a kind of portable electric appts, it comprises communication interface circuit, battery, processor.Described processor indicates described communication interface circuit whether to enter permission fast charge mode.Described communication interface circuit comprises: power port, grounding ports, the first FPDP, the second FPDP and shielding port; The communicating circuit be connected with the second FPDP with the first FPDP; The main charging circuit be connected with grounding ports with power port; One or two auxiliary charging circuit.This communication interface circuit has permission fast charge mode and forbids fast charge mode, when allowing fast charge mode, described main charging circuit and one or two auxiliary charging circuit are charged to battery by power port, earth terminal, the first FPDP, the second FPDP and/or shielding port, when forbidding fast charge mode, described communicating circuit can by the first FPDP and the second FPDP transmission data, and described main charging circuit can be charged to battery by power port and earth terminal.
According to a further aspect of the invention, the invention provides a kind of electronic system, it comprises the second communication interface circuit, the first communication interface circuit and cable.Second communication interface circuit, it comprises: power port, grounding ports, the first FPDP, the second FPDP and shielding port; The communicating circuit be connected with the second FPDP with the first FPDP; The main charging circuit be connected with grounding ports with power port; One or two auxiliary charging circuit.This communication interface circuit has permission fast charge mode and forbids fast charge mode, when allowing fast charge mode, described main charging circuit and one or two auxiliary charging circuit are charged to battery by power port, earth terminal, the first FPDP, the second FPDP and/or shielding port, when forbidding fast charge mode, described communicating circuit can by the first FPDP and the second FPDP transmission data, and described main charging circuit can be charged to battery by power port and earth terminal.First communication interface circuit comprises: power port, grounding ports, first FPDP, second FPDP, shielding port, the communicating circuit be connected with the second FPDP with the first FPDP, be connected to the 3rd change-over switch between power port and shielding port, be connected to the first change-over switch between grounding ports and the first FPDP, and the second change-over switch be connected between grounding ports and the second FPDP, first change-over switch, second change-over switch is connected with described communicating circuit with the control end of the 3rd change-over switch, this communication interface circuit has permission fast charge mode and forbids fast charge mode, when allowing fast charge mode, described communicating circuit controls the first change-over switch, second change-over switch and the 3rd change-over switch conducting, when forbidding fast charge mode, described communicating circuit controls the first change-over switch, second change-over switch and the cut-off of the 3rd change-over switch.
Compared with prior art, communication interface circuit in the present invention has permission fast charge mode and forbids fast charge mode, when allowing fast charge mode, first FPDP, the second FPDP and/or shielding port are also used as charging and use by described communicating circuit, thus charging rate can be improved greatly, and when forbidding fast charge mode, the first FPDP and the second FPDP can be used for transmitting data normally.
[accompanying drawing explanation]
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.Wherein:
Fig. 1 shows the electronic system circuit diagram in a first embodiment of the support rapid charge in the present invention;
Fig. 2 shows the electronic system circuit diagram in a second embodiment of the support rapid charge in the present invention;
Fig. 3 shows the electronic system circuit diagram in the third embodiment of the support rapid charge in the present invention.
[embodiment]
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Alleged herein " embodiment " or " embodiment " refers to special characteristic, structure or the characteristic that can be contained at least one implementation of the present invention.Different local in this manual " in one embodiment " occurred not all refers to same embodiment, neither be independent or optionally mutually exclusive with other embodiments embodiment.Unless stated otherwise, connection herein, be connected, word that the expression that connects is electrically connected all represents and is directly or indirectly electrical connected, be indirectly electrical connected to refer to and to be electrical connected via another one device or circuit.
Fig. 1 shows electronic system 100 circuit diagram in a first embodiment of the support rapid charge in the present invention.As shown in Figure 1, described electronic system 100 comprises the first communication interface circuit 110, has the portable electric appts 120 of the second communication interface circuit 140 and connects the cable 130 of the first communication interface circuit 110 and the second communication interface circuit 140.
First communication interface circuit 110 can be arranged in AC-DC adapter, also can be arranged in the portable computer of support rapid charge, also can be arranged in portable power source.Described portable electric appts 120 can be can for smart mobile phone, panel computer, Baffle Box of Bluetooth etc., and described portable electric appts 120 includes battery BAT to power itself and processor (not shown).In the present invention, the first communication interface circuit 110 is for providing power supply to the second communication interface circuit 140.In one embodiment, the first communication interface circuit 110 and the second communication interface circuit 140 are all usb circuit or MciroUSB interface circuit, and two communication interface circuits can be connected by USB cable 130.
As shown in Figure 1, described second communication interface circuit 140 comprises power port VBUS, the first FPDP D+, the second FPDP D-, grounding ports GND, the second communicating circuit 143, main charging circuit 141, auxiliary charging circuit 142, the 3rd change-over switch S3 that are connected with the second FPDP D-with the first FPDP D+, shields port (not shown).
The charging output terminal that main charging circuit 141 has the power end be connected with power port VBUS, the earth terminal be connected with grounding ports GND and charges for battery BAT.Auxiliary charging circuit 142 has power end, earth terminal and the charging output terminal for battery BAT charging, wherein the power end of auxiliary charging circuit 142 is connected with the first FPDP D+, and the earth terminal GND of auxiliary charging circuit 142 is connected with the second FPDP D-by the 3rd change-over switch S3.Second communicating circuit 143 is connected with the control end of the 3rd change-over switch S3, to control conducting or the cut-off of the 3rd change-over switch S3, is also connected to control this auxiliary charging circuit 142 with the Enable Pin of auxiliary charging circuit 142 and starts working or quit work.
In an optional embodiment, between the power end that another change-over switch can also be had to be connected to auxiliary charging circuit 142 and the first data terminal D+, this change-over switch is equally same by the second communicating circuit 143 synchro control with the 3rd change-over switch S3.
Described second communication interface circuit 140 also includes: controllable inverter INV3, its input end is connected with the first link of described second communicating circuit 143, output terminal is connected with the second link of the first FPDP D+ and described second communicating circuit 143, and its control end is connected with the 3rd link of described second communicating circuit 143; Controllable inverter INV4, its input end is connected with the 4th link of described second communicating circuit 143, its output terminal is connected with the 5th link of the second FPDP D-and described second communicating circuit 143, and its control end is connected with the 6th link of described second communicating circuit 143.
As shown in Figure 1, described first communication interface circuit 110 comprises power port VBUS, the first FPDP D+, the second FPDP D-, grounding ports GND, the first communicating circuit 111 be connected with the first FPDP D+ and the second FPDP D-, is connected to the first change-over switch S1 between power port VBUS and the first FPDP D+, is connected to the second change-over switch S2 between grounding ports GND and the second FPDP D-, shields port (not shown).First communicating circuit 111 is connected with the control end of the second change-over switch S2 with the first change-over switch S1, to control conducting or the cut-off of the first change-over switch S1 and the second change-over switch S2.
Described first communication interface circuit 110 also includes: controllable inverter INV1, its input end is connected with the first link of described first communicating circuit 111, output terminal is connected with the second link of the first FPDP D+ and described first communicating circuit, and its control end is connected with the 3rd link of described first communicating circuit 111; Controllable inverter INV2, its input end is connected with the 4th link of described first communicating circuit 111, output terminal is connected with the 5th link of the second FPDP D-and described first communicating circuit 111, and its control end is connected with the 6th link of described first communicating circuit 111.
Described cable 130 comprises ground wire, the first data line, the second data line, power lead and shielding line in cable 330, wherein ground wire is connected with described grounding ports, first data line, the second data line are connected with the second FPDP D-with the first FPDP D+ respectively, and shielding line is connected with described shielding port SN.
In the present invention, the first communication interface circuit 110 and the second communication interface circuit 140 all have permission fast charge mode and forbid fast charge mode.
When allowing fast charge mode, described second communicating circuit 143 controls the 3rd change-over switch S3 conducting, auxiliary charging circuit 142 is started working, first communicating circuit 111 controls the first change-over switch S1 and the second change-over switch S2 conducting, now, the first FPDP D+ in first communication interface circuit 110 is connected with power port VBUS, second FPDP D-is connected with earth terminal GND, the first FPDP D+ in first communication interface circuit 110 and the second FPDP D-no longer transmits data, and be used for electric energy transmitting, auxiliary charging circuit 142 can be charged to described battery BAT by its charging output terminal according to the first FPDP D+ in the second communication interface circuit 140 and the voltage on the second FPDP D-.Now, main charging circuit 141 and auxiliary charging circuit 142 can simultaneously to battery chargings, and the charging current of equivalence is both sums, therefore can realize the charging current larger than prior art.If the current limit of every root line of MicroUSB interface circuit is 2A, then can reach 4A according to the maximum input current of Fig. 1 embodiment of the present invention, its charging rate is faster.
When forbidding fast charge mode, described second communicating circuit 143 controls described change-over switch S3 to be ended, auxiliary charging circuit 142 is quit work, first communicating circuit 111 controls the first change-over switch S1 and the second change-over switch S2 to be ended, now, the first FPDP D+ in the first communication interface circuit 110 and the second communication interface circuit 140 and the second FPDP D-can by normal for transmitting data.Therefore, normal data communication is not had influence on yet.But data communication and permission fast charge mode can not carry out simultaneously.Now, described main charging circuit 141 still can charge to described battery.
In one embodiment, described second communicating circuit 143 based on outside rapid charge enable signal FCEN effectively and invalidly determine whether that needs second communication interface circuit 140 enters permission fast charge mode, if effectively, enter permission fast charge mode, if invalid, enter and forbid fast charge mode.This outside rapid charge enable signal FCEN can be configured according to the software of user, can also by configuring by after processor intelligent decision, such as when processor finds that user needs to carry out (when such as carrying out large files copy) when a large amount of data are transmitted by USB interface, being set to by FCEN of processor intelligence is invalid, forbid fast charge mode, preferentially meet a large amount of data transmission, in the free time be, FCEN can be set to effectively, enter permission fast charge mode.
In one embodiment, described first communicating circuit 111 can be known based on the communication data with the second communicating circuit 143 and enters permission fast charge mode, still enter and forbid fast charge mode, now the second communicating circuit 143 needs to carry out communication to notify that this first communicating circuit 111 also synchronously enters permission fast charge mode with the first communicating circuit 111 before entering permission fast charge mode.This first communicating circuit 111 can be switched back by permission fast charge mode automatically every the schedule time forbids fast charge mode, whether send with this second communicating circuit 143 really the instruction entering and forbid fast charge mode to carry out communication with the second communicating circuit 143, if communication contact cannot be carried out with the second communicating circuit 143, then switch back and allow fast charge mode.
In a preferred embodiment, the first communication interface circuit 110 and the second communication interface circuit 140 are allowing fast charge mode based on pre-defined rule batch (-type) and are forbidding constantly switching between fast charge mode.Such as with 1 second for the cycle, wherein 0.99S for allow fast charge mode, residue 0.01S for forbidding fast charge mode, to carry out data communication.
In another preferred embodiment of the present, in order to accelerate charging rate further, when allowing fast charge mode, voltage on described power port VBUS in first communication interface circuit 110 can be increased to second source voltage by the first supply voltage, when forbidding fast charge mode, the voltage on the described power port VBUS in the first communication interface circuit 110 is low to moderate the first supply voltage by second source voltage drop.Such as the first supply voltage is 5V, and second source voltage is 10V.Like this, when connecting line (such as power port VBUS) flows through same current, after raising voltage, higher charge power can be provided.Such as, before improving, 5V provides charging with 2A, and its power is 10W, if cell voltage is 3.6V, the conversion efficiency of charging circuit is 90%, then the maximum charging current of battery of giving is: (10W). (90%)/(3.6V)=2.5A.When the voltage of power port VBUS is increased to 10V, provide charging current with 2A, output power is (10V). (2A)=20W.If cell voltage is 3.6V, the conversion efficiency of charging circuit is 90%, then the maximum charging current of battery of giving is: (20W). (90%)/(3.6V)=5A.Like this, charging current can further be improved.
Fig. 2 shows electronic system 200 circuit diagram in a second embodiment of the support rapid charge in the present invention.As shown in Figure 2, described electronic system 200 comprises the first communication interface circuit 210, has the portable electric appts 220 of the second communication interface circuit 240 and connects the cable 230 of the first communication interface circuit 210 and the second communication interface circuit 240.
As shown in Figure 2, described second communication interface circuit 240 comprises power port VBUS, the first FPDP D+, the second FPDP D-, grounding ports GND, shielding port SN, the second communicating circuit 243 be connected with the second FPDP D-with the first FPDP D+, main charging circuit 241, first auxiliary charging circuit 242 and the second auxiliary charging circuit 244.Described shielding port SN is connected with grounding ports GND.
The charging output terminal that main charging circuit 241 has the power end be connected with power port VBUS, the earth terminal be connected with grounding ports GND and charges for battery BAT.First auxiliary charging circuit 242 has power end, earth terminal and the charging output terminal for battery BAT charging, and wherein the power end of the first auxiliary charging circuit 242 is connected with the first FPDP D+, and the earth terminal of the first auxiliary charging circuit 242 is connected with grounding ports.Second auxiliary charging circuit 244 has power end, earth terminal and the charging output terminal for battery BAT charging, and wherein the power end of the second auxiliary charging circuit 244 is connected with the second FPDP D+, and the earth terminal of the second auxiliary charging circuit 244 is connected with grounding ports.The Enable Pin of the second communicating circuit 243 and the first auxiliary charging circuit 242 is connected with the Enable Pin of the second auxiliary charging circuit 244 to control the first auxiliary charging circuit 242 and the second auxiliary charging circuit 244 is started working or quit work.
As shown in Figure 2, described first communication interface circuit 210 comprises power port VBUS, the first FPDP D+, the second FPDP D-, grounding ports GND, shielding port SN, the first communicating circuit 211 be connected with the first FPDP D+ and the second FPDP D-, is connected to the first change-over switch S1 between power port VBUS and the first FPDP D+, is connected to the second change-over switch S2 between power port VBUS and the second FPDP D-.First communicating circuit 211 is connected with the control end of the second change-over switch S2 with the first change-over switch S1, to control conducting or the cut-off of the first change-over switch S1 and the second change-over switch S2.Described shielding port SN is connected with grounding ports GND.
Described first communication interface circuit 210 also includes: controllable inverter INV1 and controllable inverter INV2, described second communication interface circuit 240 also includes: controllable inverter INV3 and controllable inverter INV4, identical with the first embodiment of this part content, no longer repeats herein.
In the present invention, the first communication interface circuit 210 and the second communication interface circuit 240 all have permission fast charge mode and forbid fast charge mode.
When allowing fast charge mode, described first communicating circuit 243 makes the first auxiliary charging circuit 242 and the second auxiliary charging circuit start working, and the first communicating circuit 211 controls the first change-over switch S1 and the second change-over switch S2 conducting.Now, the first FPDP D+ in first communication interface circuit 210 is connected with power port VBUS, second FPDP D-is connected with power port VBUS, the first FPDP D+ in first communication interface circuit 210 and the second FPDP D-no longer transmits data, and being used for electric energy transmitting, the first auxiliary charging circuit 242 can be charged to described battery BAT by its charging output terminal according to the first FPDP D+ in the second communication interface circuit 240 and the voltage in grounding ports.Second auxiliary charging circuit 244 can be charged to described battery BAT by its charging output terminal according to the second FPDP D-in the second communication interface circuit 240 and the voltage in grounding ports.Now, main charging circuit 241 and the first and second auxiliary charging circuits 242,244 can simultaneously to battery chargings, and the charging current of equivalence is three's sum, therefore can realize the charging current larger than prior art.If the current limit of every root line of MicroUSB interface circuit is 2A, then can reach 6A according to the maximum input current of Fig. 2 embodiment of the present invention, its charging rate is faster.Due to shielding line opposed power VBUS, GND, data line GP, data line DN metal interface long-pending comparatively large, it is by larger electric current, and namely maximum current density is larger.Therefore, in a first embodiment, utilize shielding line SN for ground in the present invention, when rapid charge, data line D+ and D-inputs as the positive supply of charging circuit.
When forbidding fast charge mode, described second communicating circuit 243 makes the first auxiliary charging circuit 242 and the second auxiliary charging circuit 244 quit work, and the first communicating circuit 211 controls the first change-over switch S1 and the second change-over switch S2 to be ended.Now, the first FPDP D+ in the first communication interface circuit 210 and the second communication interface circuit 240 and the second FPDP D-can by normal for transmitting data.Therefore, normal data communication is not had influence on yet.But data communication and permission fast charge mode can not carry out simultaneously.Now, described main charging circuit 241 still can charge to described battery.
In another embodiment, permission fast charge mode under, the first auxiliary charging circuit or the second auxiliary charging circuit by selectively unlocking, to increase charging current.Be such as that the first auxiliary charging circuit and main charging circuit work simultaneously sometimes, and the second auxiliary charging circuit is in the state of quitting work.Sometimes be that main charging circuit and the second auxiliary charging circuit work simultaneously, and the first auxiliary charging circuit is in the state of quitting work.Such system can wait other because of usually optimal control according to heating.There is different charging currents and arrange in even main charging circuit, the first auxiliary charging circuit and the second auxiliary charging circuit, to meet the maximum cooling requirements of system, avoids system too hot.Thus realize compromising in most charging quickly speed and heating problem.
In one embodiment, under fast charge mode, also work without the need to all charging circuits simultaneously.In some cases, such as, when all charging circuits work simultaneously, system is caused to be generated heat too large, the detection system temperature results that application processor (AP) reads temperature detector (TempD) can be passed through control, the closed portion charging circuit when there is heating (temperature is higher than predetermined temperature threshold), realize faster than common charging, but can not the better effect of system overheat.
When each charging circuit works long hours in most high charge current, although not more than the maximum current of USB line, long-term work also can reduce reliability and the life-span of line due to the existence of electromigration effect.In a preferred embodiment, (namely allowing it have a rest) can be quit work by the application processor part charging circuit that allows at times, the average service time realizing each charging wire (corresponding corresponding charging circuit) is identical, can improve reliability and the life-span of charging wire like this.Can there is beneficial effect in the present invention: when wherein damaging appears in a road charging wire or charging circuit, and other charging wires or charging circuit can also charge by left and right backup charging device, also contribute to reliability and the life-span of improving product.
Fig. 3 shows electronic system 300 circuit diagram in the third embodiment of the support rapid charge in the present invention.As shown in Figure 3, described electronic system 300 comprises the first communication interface circuit 310, has the portable electric appts 320 of the second communication interface circuit 340 and connects the cable 330 of the first communication interface circuit 310 and the second communication interface circuit 340.
As shown in Figure 3, described second communication interface circuit 340 comprises power port VBUS, the first FPDP D+, the second FPDP D-, grounding ports GND, shielding port SN, the second communicating circuit 343, the auxiliary charging circuit 344 of main charging circuit the 341, first auxiliary charging circuit 342, second, the 4th change-over switch S4 and the 5th change-over switch S5 that are connected with the second FPDP D-with the first FPDP D+.
The charging output terminal that main charging circuit 341 has the power end be connected with power port VBUS, the earth terminal be connected with grounding ports GND and charges for battery BAT.First auxiliary charging circuit 342 has power end, earth terminal and the charging output terminal for battery BAT charging, and wherein the power end of the first auxiliary charging circuit 342 is connected with shielding port SN, and the earth terminal of the first auxiliary charging circuit 342 is connected with grounding ports.Second auxiliary charging circuit 344 has power end, earth terminal and the charging output terminal for battery BAT charging, and wherein the power end of the second auxiliary charging circuit 344 is connected with shielding port SN, and the earth terminal of the second auxiliary charging circuit 344 is connected with grounding ports.The Enable Pin of the second communicating circuit 343 and the first auxiliary charging circuit 342 is connected with the Enable Pin of the second auxiliary charging circuit 344 to control the first auxiliary charging circuit 342 and the second auxiliary charging circuit 344 is started working or quit work.Described grounding ports GND is connected with the first FPDP D+ by the 4th change-over switch S4, and described grounding ports GND is connected with the second FPDP D-by the 5th change-over switch S5.
As shown in Figure 3, described first communication interface circuit 310 comprises power port VBUS, the first FPDP D+, the second FPDP D-, grounding ports GND, shielding port SN, the first communicating circuit 311 be connected with the first FPDP D+ and the second FPDP D-, is connected to the first change-over switch S1 between grounding ports GND and the first FPDP D+, is connected to the second change-over switch S2 between grounding ports GND and the second FPDP D-, is connected to power port VBUS and shields the 3rd change-over switch S3 between port SN.First communicating circuit 311 is connected with the control end of the 3rd change-over switch S3 with the first change-over switch S1, the second change-over switch S2, to control conducting or the cut-off of the first change-over switch S1, the second change-over switch S2 and the 3rd change-over switch S3.
Described first communication interface circuit 310 also includes: controllable inverter INV1 and controllable inverter INV2, described second communication interface circuit 340 also includes: controllable inverter INV3 and controllable inverter INV4, identical with the first embodiment of this part content, no longer repeats herein.
In the present invention, the first communication interface circuit 310 and the second communication interface circuit 340 all have permission fast charge mode and forbid fast charge mode.
When allowing fast charge mode, described first communicating circuit 343 makes the first auxiliary charging circuit 342 and the second auxiliary charging circuit 344 start working, and the first communicating circuit 311 controls the first change-over switch S1, the second change-over switch S2 and the 3rd change-over switch S3 conducting.Now, the first FPDP D+ in first communication interface circuit 310 is connected with earth terminal GND, second FPDP D-is connected with earth terminal GND, shielding port SN is connected with power port VBUS, the first FPDP D+ in first communication interface circuit 310 and the second FPDP D-no longer transmits data, and being used for electric energy transmitting, the first auxiliary charging circuit 342 can be charged to described battery BAT by its charging output terminal according to the voltage on the first FPDP D+ in the second communication interface circuit 340 and shielding port SN.Second auxiliary charging circuit 344 can be charged to described battery BAT by its charging output terminal according to the voltage on the second FPDP D-in the second communication interface circuit 340 and shielding port SN.Now, main charging circuit 341 and the first and second auxiliary charging circuits 342,344 can simultaneously to battery chargings, and the charging current of equivalence is three's sum, therefore can realize the charging current larger than prior art.If the current limit of every root line of MicroUSB interface circuit is 2A, then can reach 6A according to the maximum input current of Fig. 3 embodiment of the present invention, its charging rate is faster.
When forbidding fast charge mode, described second communicating circuit 343 makes the first auxiliary charging circuit 342 and the second auxiliary charging circuit 344 quit work, and the first communicating circuit 311 controls the first change-over switch S1 and the second change-over switch S2 to be ended.Now, the first FPDP D+ in the first communication interface circuit 310 and the second communication interface circuit 340 and the second FPDP D-can by normal for transmitting data.Therefore, normal data communication is not had influence on yet.But data communication and permission fast charge mode can not carry out simultaneously.Now, described main charging circuit 341 still can charge to described battery.
In the embodiment shown in fig. 3, the ground wire in cable 330, the first data line, the second data line are as earth terminal, and the power lead in cable 330 and shielding line are as positive supply input end.
It is pointed out that the scope be familiar with person skilled in art and any change that the specific embodiment of the present invention is done all do not departed to claims of the present invention.Correspondingly, the scope of claim of the present invention is also not limited only to previous embodiment.
Claims (16)
1. a communication interface circuit, is characterized in that, it comprises:
Power port, grounding ports, the first FPDP, the second FPDP and shielding port;
The communicating circuit be connected with the second FPDP with the first FPDP;
The main charging circuit be connected with grounding ports with power port;
One or two auxiliary charging circuit;
This communication interface circuit has permission fast charge mode and forbids fast charge mode, when allowing fast charge mode, described main charging circuit and one or two auxiliary charging circuit are charged to battery by power port, earth terminal, the first FPDP, the second FPDP and/or shielding port, when forbidding fast charge mode, described communicating circuit can by the first FPDP and the second FPDP transmission data, and described main charging circuit can be charged to battery by power port and earth terminal.
2. communication interface circuit according to claim 1, it is characterized in that, when allowing fast charge mode, described communicating circuit makes one or two auxiliary charging circuit described start working, now the first FPDP and the second FPDP are not used further to transmit data, first FPDP, second FPDP and/or shielding port are used for transmitting one or two rechargeable electrical energy needed for auxiliary charging circuit described, when forbidding fast charge mode, described communicating circuit makes one or two auxiliary charging circuit described quit work, now the first FPDP and the second FPDP can be used in transmitting data, and can not be used for electric energy transmitting.
3. communication interface circuit according to claim 2, it is characterized in that, described communicating circuit based on outside rapid charge enable signal effectively and invalidly determine whether that needs enter permission fast charge mode, or, allowing fast charge mode based on pre-defined rule batch (-type) and forbidding constantly switching between fast charge mode.
4. communication interface circuit according to claim 1, is characterized in that, when allowing fast charge mode, to make in described main charging circuit, one or two auxiliary charging circuit described one or more starts working according to pre-defined rule for described communicating circuit.
5. communication interface circuit according to claim 1, it is characterized in that, it also includes the 3rd change-over switch, described auxiliary charging circuit is one, described auxiliary charging circuit has power end, earth terminal and the charging output terminal for battery charging, the power end of described auxiliary charging circuit is connected with the first FPDP, the earth terminal of described auxiliary charging circuit is connected with the second FPDP by the 3rd change-over switch, when allowing fast charge mode, described communicating circuit controls the 3rd change-over switch conducting, now described auxiliary charging circuit can be charged to described battery by its charging output terminal according to the voltage in the first FPDP and the second FPDP, when forbidding fast charge mode, communicating circuit controls the 3rd change-over switch cut-off, now described communicating circuit can by the first FPDP and the second FPDP transmission data, described main charging circuit can be charged to battery by power port and earth terminal.
6. communication interface circuit according to claim 1, it is characterized in that, described auxiliary charging circuit is two, be respectively the first auxiliary charging circuit and the second auxiliary charging circuit, first auxiliary charging circuit and the second auxiliary charging circuit all have power end, earth terminal and the charging output terminal for battery charging, the power end of the first auxiliary charging circuit is connected with the first FPDP, the earth terminal of the first auxiliary charging circuit is connected with grounding ports, the power end of the second auxiliary charging circuit is connected with the second FPDP, the earth terminal of the second auxiliary charging circuit is connected with grounding ports, described shielding port is connected with described grounding ports,
When allowing fast charge mode, described communicating circuit can make the first auxiliary charging circuit and the second auxiliary charging circuit start working, described first auxiliary charging circuit can be charged to described battery by its charging output terminal according to the voltage in the first FPDP and grounding ports, described second auxiliary charging circuit can be charged to described battery by its charging output terminal according to the voltage in the second FPDP and grounding ports, when forbidding fast charge mode, described communicating circuit can by the first FPDP and the second FPDP transmission data, described main charging circuit can be charged to battery by power port and earth terminal.
7. communication interface circuit according to claim 1, is characterized in that, it also comprises the 4th change-over switch and the 5th change-over switch,
4th change-over switch is connected between grounding ports and the first FPDP, 5th change-over switch is connected between grounding ports and the second FPDP, described auxiliary charging circuit is two, be respectively the first auxiliary charging circuit and the second auxiliary charging circuit, first auxiliary charging circuit and the second auxiliary charging circuit all have power end, earth terminal and the charging output terminal for battery charging, the power end of the first auxiliary charging circuit is connected with described shielding port, the earth terminal of the first auxiliary charging circuit is connected with grounding ports, the power end of the second auxiliary charging circuit is connected with described shielding port, the earth terminal of the second auxiliary charging circuit is connected with grounding ports,
When allowing fast charge mode, 4th change-over switch conducting, 5th change-over switch conducting, described communicating circuit makes the first auxiliary charging circuit and the second auxiliary charging circuit start working, described first auxiliary charging circuit can be charged to described battery by its charging output terminal according to the voltage in shielding port and grounding ports, described second auxiliary charging circuit can be charged to described battery by its charging output terminal according to the voltage in described shielding port and grounding ports, when forbidding fast charge mode, 4th change-over switch cut-off, 5th change-over switch cut-off, described communicating circuit can by the first FPDP and the second FPDP transmission data, described main charging circuit can be charged to battery by power port and earth terminal.
8. communication interface circuit according to claim 1, is characterized in that, it also includes:
First controllable inverter, its input end is connected with the first link of described communicating circuit, and output terminal is connected with the second link of the first FPDP and described communicating circuit, and its control end is connected with the 3rd link of described communicating circuit;
Second controllable inverter, its input end is connected with the 4th link of described communicating circuit, and output terminal is connected with the 5th link of the second FPDP and described communicating circuit, and its control end is connected with the 6th link of described communicating circuit.
9. communication interface circuit according to claim 1, is characterized in that, described communication interface circuit is usb circuit or microUSB interface circuit.
10. a communication interface circuit, it is characterized in that, it comprises: power port, grounding ports, the first FPDP, the second FPDP, the communicating circuit be connected with the first FPDP and the second FPDP, be connected to the first change-over switch between power port and the first FPDP, and the second change-over switch be connected between grounding ports and the second FPDP
First change-over switch is connected with described communicating circuit with the control end of the second change-over switch, this communication interface circuit has permission fast charge mode and forbids fast charge mode, when allowing fast charge mode, described communicating circuit controls the first change-over switch and the second change-over switch conducting, when forbidding fast charge mode, described communicating circuit controls the first change-over switch and the cut-off of the second change-over switch.
11. 1 kinds of communication interface circuits, it is characterized in that, it comprises: power port, grounding ports, first FPDP, second FPDP, shielding port, the communicating circuit be connected with the second FPDP with the first FPDP, be connected to the first change-over switch between power port and the first FPDP, and the second change-over switch be connected between power port and the second FPDP, described shielding port is connected with described grounding ports, first change-over switch is connected with described communicating circuit with the control end of the second change-over switch, this communication interface circuit has permission fast charge mode and forbids fast charge mode, when allowing fast charge mode, described communicating circuit controls the first change-over switch and the second change-over switch conducting, when forbidding fast charge mode, described communicating circuit controls the first change-over switch and the cut-off of the second change-over switch.
12. 1 kinds of communication interface circuits, it is characterized in that, it comprises: power port, grounding ports, the first FPDP, the second FPDP, shielding port, the communicating circuit be connected with the first FPDP and the second FPDP, be connected to power port and shield the 3rd change-over switch between port, be connected to the first change-over switch between grounding ports and the first FPDP, and the second change-over switch be connected between grounding ports and the second FPDP
First change-over switch, the second change-over switch are connected with described communicating circuit with the control end of the 3rd change-over switch, this communication interface circuit has permission fast charge mode and forbids fast charge mode, when allowing fast charge mode, described communicating circuit controls the first change-over switch, the second change-over switch and the 3rd change-over switch conducting, when forbidding fast charge mode, described communicating circuit controls the cut-off of the first change-over switch, the second change-over switch and the 3rd change-over switch.
13. communication interface circuits according to claim 10,11 or 12, it is characterized in that, when allowing fast charge mode, voltage on described power port is increased to second source voltage by the first supply voltage, when forbidding fast charge mode, the voltage on described power port is low to moderate the first supply voltage by second source voltage drop.
14. communication interface circuits according to claim 10,11 or 12, it is characterized in that, it also includes:
First controllable inverter, its input end is connected with the first link of described communicating circuit, and output terminal is connected with the second link of the first FPDP and described communicating circuit, and its control end is connected with the 3rd link of described communicating circuit;
Second controllable inverter, its input end is connected with the 4th link of described communicating circuit, and output terminal is connected with the 5th link of the second FPDP and described communicating circuit, and its control end is connected with the 6th link of described communicating circuit.
15. 1 kinds of portable electric appts, it is characterized in that, it comprises:
Communication interface circuit as described in as arbitrary in claim 1-9; With
Battery;
Processor, it indicates described communication interface circuit whether to enter permission fast charge mode.
16. 1 kinds of electronic systems, it is characterized in that, it comprises:
Communication interface circuit as described in as arbitrary in claim 1-9;
Communication interface circuit as described in as arbitrary in claim 10-14;
Cable, it is by the power port in two communication interface circuits, grounding ports, the first FPDP, the second FPDP, shielding port electrical interconnects respectively.
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| CN201510713235.XA CN105426332B (en) | 2015-08-21 | 2015-10-28 | Communication interface circuit, portable electronic device and electronic system |
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| CN201510521085 | 2015-08-21 | ||
| CN2015105210852 | 2015-08-21 | ||
| CN201510713235.XA CN105426332B (en) | 2015-08-21 | 2015-10-28 | Communication interface circuit, portable electronic device and electronic system |
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| CN106230083A (en) * | 2016-08-22 | 2016-12-14 | 维沃移动通信有限公司 | Charger charging circuit, mobile terminal charging circuit, charger and mobile terminal |
| CN106293845A (en) * | 2016-08-15 | 2017-01-04 | 中科创达软件科技（深圳）有限公司 | A kind of terminal enters control method and the device of brush machine pattern |
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| WO2018049993A1 (en) * | 2016-09-14 | 2018-03-22 | 天地融科技股份有限公司 | Data communication device and system |
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| CN115396306A (en) * | 2021-05-24 | 2022-11-25 | 艾普顿集团有限责任公司 | Reconfigurable communication interface for a device |
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| CN205193796U (en) * | 2015-08-21 | 2016-04-27 | 无锡中感微电子股份有限公司 | Communication interface circuit, portable electronic equipment and electronic system |
| CN106712174B (en) * | 2016-12-23 | 2020-12-15 | 天津力神特种电源科技股份公司 | Automatic switching method for power supply and communication of lithium ion storage battery pack |
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Also Published As
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| CN205193796U (en) | 2016-04-27 |
| CN105426332B (en) | 2023-07-21 |
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