CN104037884A - Charging method and device integrating quick-charging rules and USB charging rules - Google Patents

Charging method and device integrating quick-charging rules and USB charging rules Download PDF

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Publication number
CN104037884A
CN104037884A CN201410300461.0A CN201410300461A CN104037884A CN 104037884 A CN104037884 A CN 104037884A CN 201410300461 A CN201410300461 A CN 201410300461A CN 104037884 A CN104037884 A CN 104037884A
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CN
China
Prior art keywords
charging
portable
power supply
external power
usb
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CN201410300461.0A
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Chinese (zh)
Inventor
刘向候
于亚男
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Qingdao Goertek Co Ltd
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Qingdao Goertek Co Ltd
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Priority to CN201410300461.0A priority Critical patent/CN104037884A/en
Publication of CN104037884A publication Critical patent/CN104037884A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44Methods for charging or discharging
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The invention provides a charging method and device integrating quick-charging rules and USB charging rules, and relates to the technical field of charging. The method includes the steps that when the charging device is connected with an external power supply and detects that a portable device is connected, the charging device identifies the category of the power supply and charges the portable device according to Qualcomm Quick Charge or USB Battery Charging rules, and when it is detected that circulating currents between the charging device and the portable device are small, namely the portable device has been charged, the external power supply charges a built-in battery of the charging device according to the Qualcomm Quick Charge or USB Battery Charging rules; when the charging device is connected with the external power supply and it is not detected that the portable device is connected, the external power supply is controlled to charge the built-in battery in the charging device according to the Qualcomm Quick Charge or USB Battery Charging rules; when the charging device is not connected with the external power supply and it is detected that the portable device is connected, the built-in battery in the charging device charges the portable device according to the USB Battery Charging rules.

Description

A kind of compatibility is filled charging method and the device with USB charging specification soon
Technical field
The present invention relates to charging technique field, specifically, relate to a kind of compatibility and fill soon and charging method and the device of USB charging specification.
Background technology
To have volume little because of it for portable set, portative advantage and enjoy liking of consumer, along with popularizing of the portable set application such as portable set, its function is constantly perfect, the function that user uses is more, the power consumption of portable set continues to increase, user in use, can often run into the problem of battery electric quantity deficiency, therefore increasing people needs easily the portable sets such as portable set to be charged whenever and wherever possible, conventional charging modes speed is slow, and charging modes is confined to the charging restriction of conventional 5V/1.5A, can not meet to a great extent user's demand.
Qualcomm Quick Charge (high pass quick charge) is a kind of emerging charging modes for the portable set such as mobile phone and panel computer, not only can break through the charging restriction of conventional 5V/1.5A, can also increase substantially charging rate, be highly suitable for exceeding the lithium cell charging of 2000mAh.But Qualcomm Quick Charge seals standard as one, do not have at present on the market independent charge management circuit can be used in charging device, simultaneously compatible Qualcomm Quick Charge and existing USB Charge Management specification USB Battery Charging (USB charging).
Therefore, need charging method and the device of a kind of compatible Qualcomm Quick Charge charging specification and existing USB Charge Management specification USB Battery Charging, avoid above-mentioned defect and deficiency.
Summary of the invention
For above-mentioned deficiency, the invention provides a kind of compatibility fills and the charging method of USB charging specification soon, can intelligent management charged state, compatible Qualcomm Quick Charge and existing USB Charge Management specification USB Battery Charging simultaneously, is embodied as external power supply to portable set, external power supply to internal battery charging, internal battery to three kinds of charge modes of portable set charging.
To achieve these goals, the invention provides a kind of compatibility and fill soon and the charging method of USB charging specification, be achieved through the following technical solutions:
A: in the time that charging device connects external power supply and portable set access detected, thereby described charging device identification power supply classification is charged to portable set according to Qualcomm Quick Charge or USB Battery Charging charging standard;
B: in the time that charging device connects external power supply and portable set access do not detected, described charging device identification external power supply classification is also charged to the internal battery in described charging device according to Qualcomm Quick Charge or USB Battery Charging charging specification according to recognition result;
C: in the time that charging device does not connect external power supply and portable set access detected, the internal battery in described charging device is that portable set charges according to USB Battery Charging charging specification.
D in steps after described step a: when charging device connects external power supply and portable set access, and it is less to detect circulating current between charging device and portable set, be external power supply while completing the charging to portable set, continue the internal battery of charging device to be charged according to Qualcomm Quick Charge or USB Battery Charging charging specification according to recognition result.
The present invention also provides a kind of compatibility to fill soon and the charging device of USB charging specification, comprises mainboard, shell and charging circuit, it is characterized in that, described charging circuit comprises:
Internal battery, for saving electric weight and portable set being charged;
Whether charging detecting circuit U1, can connect external power supply and portable set, deposit for detection of external power supply and portable set;
Charge management circuit U2, connect described charging detecting circuit U1 and internal battery, according to the testing result of described charging detecting circuit, determine that external power supply charges according to Qualcomm Quick Charge or USB Battery Charging to portable set, or external power supply adopts Qualcomm Quick Charge or the charging of USB Battery Charging charging specification to internal battery, or internal battery adopts USB Battery Charging charging specification to charge to outside portable set;
Select control circuit U3, connect described charging detecting circuit U1, connect described external power supply and described charge management circuit U2 and external portable equipment simultaneously, according to the testing result of charging detecting circuit U1, select connect external power supply and portable set and adopt Qualcomm Quick Charge or the charging specification of USB Battery Charging is charged to portable set, or be communicated with and select external power supply and described charge management circuit and internal battery is charged according to Qualcomm Quick Charge or the USB Battery Charging specification of charging;
Power supply circuits U4, connects described charging detecting circuit U1, charge management circuit U2, selects control circuit U3, for maintaining the normal operating conditions of charging device.
As a kind of optimal way, described charge management circuit U2 is connected and is connected with current detection circuit between the two with portable set, can monitor the size of current between charging device and external portable equipment, in the time that the electric current between charge management circuit U2 and portable set is less than a certain set point, thinks portable set has been charged.
As a kind of optimal way, described current detection circuit connects described power supply circuits U4, when charging device connects external power supply and portable set access detected, and detect circulating current between charging device and portable set while being less than a certain set point, described charge management circuit U2 judges that external power supply completes portable set charging, continues the internal battery of charging device to be charged according to Qualcomm Quick Charge or USB Battery Charging charging specification according to the recognition result of identification external power supply classification
As a kind of optimal way, described selection control circuit connects charge management circuit and portable set by single road to two-way multiplex switch, can control comparatively easily the connection between external power supply and portable set or external power supply and charge management circuit.
As a kind of optimal way, described internal battery is lithium ion battery, not only can realize repeated multiple times charging electric power storage, and useful life is longer, and cost is lower comparatively speaking.
As a kind of optimal way, described charge management circuit is connected with charging indication, can clearly show charge mode and charging progress, is convenient to user and in the time that portable set is charged, understands charge condition and make in time further operation.
As a kind of optimal way, the voltage VDD that described power supply circuits provide, between 3.3V~4.7V, can maintain charging device and normally work.
As a kind of optimal way, between described power supply circuits and charge management circuit, be serially connected with current-limiting resistance and touch-switch, for operating state stable and control charging device.
As a kind of optimal way, described charge management circuit U2 comprises a charging management chip, and the PMID pin of this chip connects portable set, can effectively in charging process, carry out overcurrent, overvoltage protection to portable set.
Compatibility of the present invention is filled charging method and the device with USB charging specification soon, can intelligent management charged state, identification external power supply type (quick charge adapter Qualcomm Quick Charge adapter, or special charging port Dedicated Charging Port, USB standard downlink port Standard Downstream Port etc.) be embodied as external power supply to portable set, external power supply charges to internal battery, and internal battery is to three kinds of charge modes of portable set; Using portable set whether access, whether external power supply exist as two-way triggering signal, management charging priority level, realistic user demand; Adopt single road to two-way multiplex switch, external power supply is communicated with portable set or charge management circuit, thereby respectively according to Qualcomm Quick Charge or USB Battery Charging charging standardized administration charging voltage and electric current; In addition; the present invention is status recognition kind instruction charge management circuit management charge path automatically; do not need external field effect transistor as charge path; external power supply or internal battery all pass through the PMID pin of charge management circuit while being portable set charging, and possess overcurrent, over-voltage protection function.
The application's further feature and advantage will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the application.The application's object and other advantages can be realized and be obtained by specifically noted structure in write specification, claims and accompanying drawing.
Brief description of the drawings
Fig. 1 is the schematic flow diagram of charging method of the present invention;
Fig. 2 is charging device collocation external power supply and the portable set application schematic diagram of the specific embodiment of the invention;
Fig. 3 is the selection control circuit figure of the charging device of the specific embodiment of the invention;
Fig. 4 is the power supply circuits circuit diagram of the charging device of the specific embodiment of the invention;
Fig. 5 is the charge management circuit circuit diagram of the charging device of the specific embodiment of the invention;
Fig. 6 is the charging detecting circuit circuit diagram of the charging device of the specific embodiment of the invention;
Fig. 7 is the current detection circuit circuit diagram of the charging device of the specific embodiment of the invention;
Fig. 8 is the charging indication circuit diagram of the charging device of the specific embodiment of the invention.
Reference numeral: U1, charging detecting circuit, U2, charge management circuit, U3, selection control circuit, U4, power supply circuits, U5, current detection circuit, 100, external power supply, 101, Qualcomm Quick Charge Adapter, 102, PC USB, 200, charging device, 201, internal battery, 300, portable set, 301, the battery of portable set.
Embodiment
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Compatibility of the present invention is filled the charging method flow process with USB charging specification soon, as shown in Figure 1:
A, connect external power supply and portable set when access detected when charging device, thereby described charging device identification power supply classification is charged to portable set according to Qualcomm Quick Charge or USB Battery Charging charging specification;
D, connect the access of external power supply and portable set when charging device, and it is less to detect circulating current between charging device and portable set, be that external power supply completes when portable set is charged, external power supply charges according to Qualcomm Quick Charge or USB Battery Charging charging specification to the internal battery of charging device;
B, when charging device connects external power supply and portable set when access do not detected, control external power supply and according to Qualcomm Quick Charge or USB Battery Charging charging specification, the internal battery in described charging device charged;
C, when charging device does not connect external power supply and portable set when access detected, the internal battery in described charging device is that portable set charges according to USB Battery Charging charging specification.
Arrange in pairs or groups in external power supply 100 and portable set 300 connection diagrams at charging device of the present invention 200 as shown in Figure 2, comprising:
Internal battery 201, for saving electric weight and portable set being charged;
Whether charging detecting circuit U1, can connect external power supply 100 and portable set 300, deposit for detection of external power supply 100 and portable set 300;
Charge management circuit U2, connect described charging detecting circuit U1 and internal battery 201, and according to the testing result of described charging detecting circuit U1, determine that external power supply 100 charges according to Qualcomm Quick Charge or USB Battery Charging to portable set 300, or external power supply 100 adopts Qualcomm Quick Charge or the charging of USB Battery Charging charging specification to internal battery 201, or internal battery 201 adopts USB Battery Charging charging specification to charge to outside portable set 300;
Select control circuit U3, connect described charging detecting circuit U1, connect described external power supply 100 and described charge management circuit U2 or be connected external power supply 100 and outside portable set 300, according to the testing result of charging detecting circuit U1, select to connect external power supply 100 with portable establish 300 standby or be communicated with external power supply 100 and described charge management circuit U2;
Power supply circuits U4, connects described charging detecting circuit U1, charge management circuit U2, selects control circuit U3, for maintaining the normal operating conditions of charging device 200.
Described charge management circuit U2 and portable set 300 are connected with current detection circuit U5 between the two, can monitor the circulating current size between charging device 200 and external portable equipment 300, in the time that the circulating current between charge management circuit U2 and external portable equipment 300 is less than the particular value of a certain setting, judge that external power supply 100 completes the charging of outside portable set 300, and result feedback is arrived and selects control circuit U3, thereby connect external power supply and charge management circuit U2, realizing external power supply 100 charges according to Qualcomm Quick Charge or USB Battery Charging charging specification to the internal battery 201 of charging device 200,
Described selection control circuit U3 connects external power supply by PC USB or Qualcomm charge adapter, and be that D+/D-connects respectively D+_1/D-_1 or connects D+_2/D-_2 by single road to two-way multiplex switch, can connect external power supply 100 makes external power supply 100 charge to portable set or connect external power supply and charge management circuit U2 according to Qualcomm Quick Charge or USB Battery Charging charging specification with outside portable set 300, external power supply is charged according to the charging specification of Qualcomm Quick Charge or USB Battery Charging to internal battery, wherein, in the time that external power supply is the DC charge power supply such as quick charge adapter Qualcomm charge adapter or special charging port Dedicated Charging Port, external power supply 100 charges to the battery 301 of portable set 300 or the internal battery 201 of charging device 200 is charged according to Qualcomm Quick Charge charging specification, in the time that external power supply is the USB charge power supplies such as USB standard downlink port Standard Downstream Port, external power supply 100 charges to the battery 301 of portable set 300 or the internal battery 201 of charging device 200 is charged according to USB Battery Charging charging specification.
Described internal battery is lithium ion battery, not only can realize repeated multiple times charging electric power storage, and useful life is longer, and cost is lower;
Described charging detecting circuit U1 is connected with charging indication, in order to show charge mode and charging progress, described charging indication adopts red diodes, the instruction of charging of green diode and blue light two aurora, in the time of lumination of light emitting diode, represent to have charged, in the time that green diode is luminous, in representing that charging is carried out, in the time that blue light diode is luminous, represent that charging device carries out quick charge to portable set, can clearly show charge mode and charging progress, be convenient to user understands charge condition and makes in time further operation in the time that portable set is charged,
The voltage VDD that described power supply circuits U4 provides, between 3.3V~4.7V, can maintain the normal steady operation of charging device and can not cause excessive infringement to each chip of charging device;
Described charge management circuit U2 comprises charging management chip; the PMID pin of this chip connects portable set; set the maximum of PMID pin according to actual conditions by electric current and adjustable-voltage, in charging process, can effectively in charging process, carry out overcurrent, overvoltage protection to portable set.
Please refer to Fig. 2, compatibility of the present invention is filled the charging device 200 with USB charging specification soon, by charging detecting circuit U1, by detecting, whether portable set 300 accesses, whether external power supply 100 exists, and judges that charging device 200 is to connect external power supply 100 by Qualcomm charge adapter or PC USB, charge management circuit U2, can manage the charging work of charging device 200, select control circuit U3 to be responsible for controlling D+/D-is forwarded to D+_1/D-_1 to connect external power supply 100 and charge management circuit U2 or D+/D-is forwarded to D+_2/D-_2 and connect external power supply 100 and outside portable set 300, play the effect of external power supply 100 to outside portable set 300 or external power supply 100 to internal battery 201 transferring energies of controlling, each device that power supply circuits U4 is charging device 200 provides vdd voltage, the system that maintains is normally worked, current detection circuit U5 can detect the size of current between charge management circuit U2 and outside portable set 300 in real time, in the time that electric current is between the two less than the particular value of a certain setting, judge that external power supply 100 has charged to the battery 301 of portable set 300, thereby by signal feedback to charge management circuit U2, controlling external power supply 100 charges according to Qualcomm Quick Charge or USB Battery Charging charging specification to the internal battery 201 of charging device.
Compatibility of the present invention is filled the charging device with USB charging specification soon, and its specific works principle is:
When detecting portable set 300, charging detecting circuit U1 accesses, and external power supply 100 exists, simultaneously Qualcomm charge adapter or PC is USB according to the classification that identifies external power supply 100, charge management circuit U2 controls and selects control circuit U3 that D+/D-is connected to D+_2/D-_2, connected by external power supply 100 and portable set 300, portable set 300 is charged according to Qualcomm Quick Charge or USB Battery Charging charging specification according to the classification of external power supply 100 is adaptive.
When charging detecting circuit U1 detects portable set access, and external power supply exists, but current detection circuit U5 detects when electric current that charging device is passed to portable set has been less than a certain set point, selects control circuit U3 that D+/D-is forwarded to D+_1/D-_1; External power supply is communicated with charge management circuit U2; Charge management circuit U2 charges to the internal battery 201 of charging device 200 according to Qualcomm Quick Charge or USB Battery Charging charging specification according to the classification of external power supply 100 is adaptive.
When detecting portable set 300, charging detecting circuit U1 accesses, but when external power supply 100 does not exist, testing result is sent to charge management circuit U2 by charging detecting circuit U1, and charge management circuit U2 is that portable set 300 charges according to the internal battery 201 of testing result control charging device 200 according to USB Battery Charging charging specification.
Detect portable set 300 and do not access when serving as electro-detection chip U1, and external power supply 100 is while existing, selects control circuit U3 that D+/D-is forwarded to D+_1/D-_1 according to testing result, external power supply 100 is communicated with charge management circuit U2; Charge management circuit U2 charges according to the adaptive internal battery 201 that is charging device 200 according to Qualcomm Quick Charge or USB Battery Charging charging specification of the classification of external power supply 100.
As shown in Figure 3, the present embodiment compatibility is filled the circuit diagram with the selection control circuit U3 of the charging device of USB charging specification soon, comprising:
Select control chip, described selection control chip model is TS3USB221A-Q1, its VCC pin connects VDD_3.3V system voltage, connect the rear ground connection of capacitor C 120, described capacitor C 120, for filtering the stable operating voltage of selecting control chip, its D+ pin, D-pin connects respectively the heteropole of external power supply, the D+_2 pin of described selection control chip, D-_2 pin connects respectively the battery heteropole of portable set, D+_1 pin, D-_1 pin connects respectively charge management circuit U2, select the GND pin ground connection of control chip, select control chip in order to control external power supply 100 and portable set 300 be communicated with and external power supply 100 and charge management circuit U2 between conducting.
Be illustrated in figure 4 compatibility of the present invention and fill soon and a kind of specific embodiments of the power supply circuits U4 of the charging device of USB charging specification, comprising:
Power supply chip, in order to the support of charging device electric weight to be provided, described power supply chip model RT9169/H.
The GND pin ground connection of described power supply chip, its VIN pin is connected charge management circuit U2 with/EN pin, between VIN pin and charge management circuit U2, be connected the rear ground connection of capacitor C 550, its VOUT pin connects VDD_3.3V voltage, and its VOUT pin connects the rear ground connection of capacitor C 551.
The ceramic disc capacitor that described capacitor C 550 and capacitor C 551 are, for filtering voltage regulation, ensures the normal work of charging device.
Be illustrated in figure 5 the present embodiment compatibility and fill soon and the circuit diagram of the charge management circuit U2 of the charging device of USB charging specification, comprising:
Charging management chip, the model of described charging management chip is bq24195.
The D+ pin of described charging management chip, D-pin D+_1 pin, the D-_1 pin of corresponding described selection control chip respectively, thus can be by selecting control chip to connect external power supply 100.
After the common contact resistance R101 of two VBUS pins of described charging management chip, connect external power supply 100, in order to ensure the normal steady operation of charging management chip, between described two VBUS pins and resistance R 101, be also connected with capacitor C in parallel 119 and the rear ground connection of capacitor C 121, the maximum of described resistance R 101 is 2.5A by electric current, can carry out good overcurrent protection to charging device, between described two VBUS pins and resistance R 101, be also connected to resistance R 118 and the resistance R 119 of connecting, between described resistance R 118 and resistance R 119, be provided with detection node Detect2-1, two BAT pins of described charging management chip connect the internal battery of charging device, in order to ensure normally carrying out of charging, are also connected to capacitor C in parallel 110 and the rear ground connection of capacitor C 111 between described two BAT pins and internal battery, two PGND pins of described charging management chip pass through three electric capacity in parallel: capacitor C 107, capacitor C 108 and the rear ground connection of capacitor C 109 and connection charging device system, it is rear by capacitor C in parallel 107, capacitor C 108 and the rear ground connection of capacitor C 109 and connection charging device system that two SW pins of described charging management chip connect inductance L 101, the model of described inductance L 101 is CLF6045T-2R2N, can protect charging management chip, the BTST pin of described charging management chip is by the resistance R 117 of series connection and the input of the rear connection inductance L 101 of capacitor C 105, after the PMID pin contact resistance Rshunt of described charging management chip, connect portable set, the input of resistance R shunt and output are connected to respectively filter capacitor C124 and the rear ground connection of capacitor C 123, in order to filtering, ensure the normal operating conditions of Rshunt resistance, between described resistance R shunt and external portable equipment also by capacitor C in parallel 115 and the rear ground connection of capacitor C 117, the PMID pin of described charging management chip is also respectively by the ILIM pin contact resistance R107 of charging management chip described in capacitor C 113 and capacitor C 114 ground connection, be connected in series resistance R 115 in parallel and the rear ground connection of resistance R 124, after the TS2 pin contact resistance R110 of described charging management chip, connect the REGN pin of described charging management chip, described REGN pin with by capacitor C 118 ground connection, the TS2 pin of described charging management chip is by the rear ILIM pin ground connection altogether of resistance R in parallel 108, thermistor TH101 and capacitor C 112, the model of described thermistor TH101 is 103AT-3, avoids the damage to charging device causing because of heating in charging process.
Be illustrated in figure 6 the present embodiment compatibility and fill soon and the circuit diagram of the charging detecting circuit U1 of the charging device of USB charging specification, comprising:
Charging detection chip, described charging detection chip model is STM8S903F3, NRST pin serial connection touch-switch SW408 and the rear connection charging device of resistance R 112 system voltage of described charging detection chip, the VCAP pin of described charging detection chip connects the rear ground connection of capacitor C 124; The VDD pin connected system voltage VDD of described charging detection chip is also by capacitor C in parallel 122 and the rear ground connection of capacitor C 123, and the VSS pin ground connection of charging detection chip also connects capacitor C 122 and the earth terminal of capacitor C 123; The PA3 pin of described charging detection chip connects the INT pin of described charging management chip; The PB5 pin of described charging detection chip connects the SDA pin of charging management chip, simultaneously by the VDD pin of resistance R 126 connected system voltage VDD and charging detection chip; The PB4 pin of described charging detection chip connects the SCL pin of described charging management chip, simultaneously by the VDD pin of resistance R 125 connected system voltage VDD and charging detection chip; The PC3 pin of described charging detection chip connects described charging management chip/CE pin; The PC4 pin of described charging detection chip connects the S pin of described selection control chip; The PC5 pin of described charging detection chip connects the STAT pin of described charging management chip; The PD3 pin of described charging detection chip connects the Detect2-1 node of described charge management circuit U2, whether has input voltage for detection of the detection node Detect2-1 between resistance R 118 and resistance R 119, and whether external power supply exists; PD4 pin serial connection touch-switch SW407 and the rear connected system voltage of resistance R 111 VDD of described charging detection chip; Whether the PD5 pin of described charging detection chip can connect portable set 300, access in order to detect portable set; The PD6 pin of described charging detection chip connects described selection control chip/OE pin.
Be illustrated in figure 7 compatibility of the present invention and fill soon and a kind of specific embodiments of the current detection circuit U5 of the charging device of USB charging specification, comprising:
Current detecting chip, the model of described current detecting chip is IN212, its V+ pin connected system voltage VDD; The GND pin ground connection of described current detecting chip; The input of contact resistance Rshunt after the REF pin contact resistance R113 of described current detecting chip, by ground connection after contact resistance R114; The IN+ of described current detecting chip, IN-pin input and the output of contact resistance Rshunt respectively; The circulating current size of the OUT pin output Rshunt of described current detecting chip.
As shown in Figure 8, this bright compatibility is filled soon with the charge management circuit U2 of the charging device of USB charging specification and is also connected with charging indication, the control end of the PD1 pin serial connection field effect transistor Q301 of described charging management chip, one end ground connection of Q301 switch ways, the other end passes through resistance R 313 connected system voltage VDD after connecting red diodes D301; The control end of the PD7 pin serial connection field effect transistor Q302 of described charging management chip, switch ways one end ground connection of field effect transistor Q302, pass through resistance R 314 connected system voltage VDD after another termination green diode D302; One end ground connection of the control end of the PD6 pin serial connection field effect transistor Q303 of described charging management chip, the switch ways of field effect transistor Q303, after another termination blue light diode, pass through resistance R 315 connected system voltage VDD, described field effect transistor Q301, field effect transistor Q302, field effect transistor Q303 are NMOS pipe, model is SSM3K121TU, each switch ways is the path of source electrode to drain electrode, grid is control end, Q301, Q302, Q303 source ground and interconnect.
Particularly, when charging detecting circuit U1 detects portable set access and detects between resistance R 118 and resistance R 119 that Detect2-1 Nodes voltage is for high, when the Vbus voltage of the charging management chip in charge management circuit is High (external power supply existence), select control circuit U3 that D+/D-pin is forwarded to D+_2/D-_2 pin according to testing result, external power supply is communicated with portable set, and external power supply charges to outside portable set according to Qualcomm Quick Charge or USB Battery Charging charging specification;
In the time that the battery of portable set is full of electricity, current detection circuit U5 is very little by detecting the electric current circulating between charging device and portable set, while being less than a certain set point, select control circuit U3 that D+/D-pin is forwarded to D+_1/D-_1 pin according to detecting result; External power supply is communicated with charge management circuit U2; Charge management circuit U2 controls inner field effect transistor Q302, and field effect transistor Q303 alternately opens and realizes step-down is that the internal battery lithium ion battery of charging device charges according to USB Battery Charging charging specification;
When detecting portable set, charging detecting circuit U1 do not access, and detect between resistance R 118 and resistance R 119 that Detect2-1 Nodes voltage is for high, when Vbus voltage is High (external power supply existence), select control circuit U3 that selection control chip D+/D-pin is forwarded to D+_1/D-_1 pin according to testing result, external power supply is communicated with charge management circuit U2; Charge management circuit U2 controls the built-in lithium battery charging that external power supply is charging device according to USB Battery Charging charging specification.
When charging detecting circuit U1 detects portable set access, and detect that between resistance R 118 and resistance R 119, Detect2-1 Nodes voltage is low, when Vbus voltage is Low (external power supply does not exist), the internal battery that charge management circuit U2 controls charging device is that portable set charges according to USB Battery Charging charging specification.
Compatibility of the present invention is filled charging method and the device with USB charging specification soon, can intelligent management charged state, identification external power supply type (Qualcomm Quick Charge adapter, or Dedicated Charging Port, Standard Downstream Port etc.) be embodied as external power supply to portable set, external power supply is to the internal battery charging of charging device, and the internal battery of charging device is to three kinds of mode of operations of portable set charging; Using portable set whether access, whether external power supply exist as two-way triggering signal, management charging priority level, realistic user demand; Adopt single road to two-way multiplex switch, control external power supply and follow and take the connection of formula equipment or external power supply and be communicated with charge management circuit U2, thereby respectively according to Qualcomm Quick Charge or USB Battery Charging charge standardized administration charging voltage and electric current; Whether the present invention can automatically identify external power supply and exist and pass through charge management circuit U2 management charge path, does not need external MOSFET as charge path; In addition, external power supply or internal battery all pass through the PMID pin of charge management circuit U2 while being portable set charging, and possess overcurrent, over-voltage protection function.
The above, be only preferred embodiment of the present invention, is not limitation of the present invention, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But, every technical solution of the present invention content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection range of technical solution of the present invention.

Claims (10)

1. compatibility is filled and the charging method of USB charging specification soon, it is characterized in that: comprise the steps:
A: in the time that charging device connects external power supply and portable set access detected, described charging device identification external power supply classification is also charged to portable set according to Qualcomm Quick Charge or USB Battery Charging charging specification according to recognition result;
B: in the time that charging device connects external power supply and portable set access do not detected, described charging device identification external power supply classification is also charged to the internal battery in described charging device according to Qualcomm Quick Charge or USB Battery Charging charging specification according to recognition result;
C: in the time that charging device does not connect external power supply and portable set access detected, the internal battery of described charging device is that portable set charges according to USB Battery Charging charging specification.
2. compatibility according to claim 1 is filled and the charging method of USB charging specification soon, it is characterized in that: d in steps after described step a: when charging device connects external power supply and portable set access detected, and detect circulating current between charging device and portable set while being less than a certain set point, described charge management circuit U2 judges that external power supply completes when portable set is charged, continue the internal battery of charging device to be charged according to Qualcomm Quick Charge or USB Battery Charging charging specification according to recognition result.
3. compatibility is filled and the charging device of USB charging specification soon, comprises mainboard, shell and charging circuit, it is characterized in that: described charging circuit comprises:
Internal battery, for saving electric weight and outside portable set being charged;
Whether charging detecting circuit U1, can connect external power supply and portable set, exist, and testing result is fed back for detection of external power supply and portable set;
Charge management circuit U2, connect described charging detecting circuit U1 and internal battery, according to the testing result of described charging detecting circuit U1, determine that external power supply charges according to the charging specification of Qualcomm Quick Charge or USB Battery Charging to portable set, or external power supply adopts Qualcomm Quick Charge or the charging of USB Battery Charging charging specification to internal battery, or internal battery adopts the charging specification of USB Battery Charging to charge to outside portable set;
Select control circuit U3, connect described charging detecting circuit U1, connect described external power supply and described charge management circuit U2 and external portable equipment simultaneously, according to the testing result of charging detecting circuit U1, select to connect external power supply and portable set and adopt Qualcomm Quick Charge or USB Battery Charging charging specification is charged to portable set, or be communicated with and select external power supply and described charge management circuit U2 and internal battery is charged according to Qualcomm Quick Charge or the USB Battery Charging specification of charging;
Power supply circuits U4, connects described charging detecting circuit U1, charge management circuit U2, selects control circuit U3, for maintaining the normal operating conditions of charging device.
Compatibility according to claim 3 is filled the charging device with USB charging specification soon, it is characterized in that: described charge management circuit U2 and portable set are connected with current detection circuit between the two, in order to monitor the circulating current size between charging device and external portable equipment.
4. compatibility according to claim 4 is filled and the charging device of USB charging specification soon, it is characterized in that: described current detection circuit connects described power supply circuits U4, when charging device connects external power supply and portable set access detected, and detect circulating current between charging device and portable set while being less than a certain set point, described charge management circuit U2 judgement external power supply completes portable set is charged, continue the internal battery of charging device to be charged according to Qualcomm Quick Charge or USB Battery Charging charging specification according to the recognition result of identification external power supply classification.
5. compatibility according to claim 3 is filled and the charging device of USB charging specification soon, it is characterized in that: described charge management circuit U2 is connected with charging indication, in order to show charge mode and charging progress.
6. compatibility according to claim 6 is filled and the charging device of USB charging specification soon, it is characterized in that: described charging indication comprises three light-emitting diodes that send respectively ruddiness, green glow, blue light.
7. according to claim 3 compatibility filled and the charging device of USB charging specification soon; it is characterized in that: described charge management circuit U2 comprises a charging management chip; the PMID pin of this chip connects portable set, in order to portable set is carried out in charging process to overcurrent, overvoltage protection.
8. compatibility according to claim 3 is filled and the charging device of USB charging specification soon, it is characterized in that: the voltage VDD that described power supply circuits provide, between 3.3V~4.7V, normally works in order to maintain charging device.
9. compatibility according to claim 3 is filled and the charging device of USB charging specification soon, it is characterized in that: described selection control circuit is connected respectively external power supply and charge management circuit or connection external power supply and portable set by single road to the mode of two-way.
10. compatibility according to claim 3 is filled and the charging device of USB charging specification soon, it is characterized in that:, between described power supply circuits U4 and charge management circuit U2, be serially connected with current-limiting resistance and touch-switch, for operating state stable and control charging device.
CN201410300461.0A 2014-06-28 2014-06-28 Charging method and device integrating quick-charging rules and USB charging rules Pending CN104037884A (en)

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