CN105281395A - Charging detection circuit, mobile terminal and charging detection system - Google Patents
Charging detection circuit, mobile terminal and charging detection system Download PDFInfo
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- CN105281395A CN105281395A CN201510283857.3A CN201510283857A CN105281395A CN 105281395 A CN105281395 A CN 105281395A CN 201510283857 A CN201510283857 A CN 201510283857A CN 105281395 A CN105281395 A CN 105281395A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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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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Abstract
The present invention provides a charging detection circuit, a mobile terminal and a charging detection system, and belongs to the field of electronic devices. The type of a charger is detected through a detection module in the charging detection circuit, and a type recognition signal is produced and output to a processor; the processor carries out control and processing according to the type recognition signal, thus to determine charging voltage required to be output by the charger. Moreover, the charging detection circuit and a charging circuit are separated and do not interfere each other, circuit design flexibility is broadened, and thus the charging circuit can be designed to be capable of outputting higher charging voltage, thus to meet requirements of a user and raising using experience of the user.
Description
Technical field
The present invention relates to electronic device field, particularly relate to a kind of charging detecting circuit, mobile terminal and charging detection system.
Background technology
Along with the continuous lifting of intelligent mobile phone battery capacity, conventional its charging rate of charging scheme is more and more slower, as adopted the scheme of conventional 5V, 1.6A to charge to the battery of 3200mAh, at least needs within 3 hours, just can complete, this is difficult to accept for consumers.Therefore, the speed improving charging can improve the experience of user effectively.At present, the rapid nitriding that the mobile terminal on market adopts mainly is divided into two classes, and a class adopts the charger of relatively high power to carry out large current charge with the 5V voltage of routine to mobile phone; Another kind of, be adopt high pressure to charge.
Fill soon in scheme at existing high pressure, charger all can the output voltage of backward compatible 5V, can carry out the normal charge of 5V to the mobile phone not supporting high pressure to fill soon; And if needs carry out more high-tension charging, after needing charger end and mobile terminal to carry out handshake communication success, the voltage that charger just can export 9V or higher fills soon.But because existing high pressure fills in scheme soon, testing circuit is integrated on charging circuit, make charging IC can only support the highest 9V high-voltage charging.Therefore, existing high-voltage charging scheme can not meet the demand of user well, needs to provide a kind of technical scheme can bringing up to more high charge voltage.
Summary of the invention
For overcoming the problems of the prior art, one aspect of the present invention provides a kind of charging detecting circuit, comprising:
Detection module, the first switch, processor and low pressure difference linear voltage regulator LDO power supply;
Described detection module, is connected with charger, the detection signal that described detection module generates according to described charger, detects the type of described charger, and generates type identification signal; Described detection module is also connected with described processor, for exporting described type identification signal to described processor;
Described first switch, comprise first end, the second end and control end, the first end of described first switch is connected with described charger, for accessing the detection signal generated by described charger, second end of described first switch is connected with described LDO power supply, second end of described first switch is output switching circuit, the control end of described first switch is connected with described processor, the switching of described output switching circuit is controlled by described processor, make the second end of described first switch generate different level combinations according to described detection signal, export described LDO power supply to;
Described processor, is connected with described charger, and described processor, according to described type identification signal, carries out exchanges data with described charger, or carries out switching controls to described output switching circuit;
Described LDO power supply, is connected with described charger, for according to described level combinations, generates feedback signal, and exports described charger to, determines the charging voltage needing to export to make described charger.
On the other hand, present invention also offers a kind of mobile terminal, comprising:
Connector and charging detecting circuit as above;
Described connector, is connected with charger, and the detection signal generated by described charger is accessed to described charging detecting circuit, also exports the feedback signal generated by described charging detecting circuit to described charger;
Described charging detecting circuit, is connected with described connector, and described charging detecting circuit is connected with described charger through described connector, and described charging detecting circuit is used for generating described feedback signal according to described detection signal.
Again on the one hand, present invention also offers a kind of charging detection system, comprising:
Charger and mobile terminal, described mobile terminal comprises connector and charging detecting circuit as above;
Described charger, for generating detection signal, the feedback signal also for generating according to described charging detecting circuit, determines the charging voltage needing to export;
Described connector, is connected with charger, and the detection signal generated by described charger is accessed to described charging detecting circuit, also exports the feedback signal generated by described charging detecting circuit to described charger;
Described charging detecting circuit, is connected with described connector, and described charging detecting circuit is connected with described charger through described connector, and described charging detecting circuit is used for generating described feedback signal according to described detection signal.
The embodiment of the present invention adopts above-mentioned circuit to arrange, and is detected the type of charger by detection module, produces type identification signal, and exports processor to; Processor then carries out control treatment according to the type identification signal, to determine that charger needs to export charging voltage; And, the embodiment of the present invention achieves and is arranged independent of charging circuit by charging detecting circuit, charging detecting circuit and charging circuit are independent of each other, extend the flexibility of circuit design, and then charging circuit can be designed to be able to export higher charging voltage, to meet the demand of user, improve the experience of user.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in 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.
Fig. 1 is the structural representation of the first embodiment of charging detecting circuit of the present invention;
Fig. 2 is the structural representation of the second embodiment of charging detecting circuit of the present invention;
Fig. 3 is the structural representation of the first embodiment of mobile terminal of the present invention;
Fig. 4 is the structural representation of the second embodiment of mobile terminal of the present invention;
Fig. 5 is the structural representation of the first embodiment of charging detection system of the present invention;
Fig. 6 is the structural representation of the second embodiment of charging detection system of the present invention.
Embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 1, be the structural representation of the first embodiment of charging detecting circuit 110 of the present invention, this charging detecting circuit 110 comprises:
Detection module 111, first switch 112, processor 113 and low pressure difference linear voltage regulator LDO power supply 114;
Detection module 111, is connected with charger 200, the detection signal that detection module 111 generates according to charger 200, detects the type of charger 200, and generates type identification signal; Detection module 111 is also connected with processor 113, for exporting type identification signal to processor 113; Particularly: detection module 111 can be integrated IC, when detection module 111 receives detection signal, can BC1.2 detection be carried out, and then judge that the charger 200 be connected with mobile terminal 100 is that trip fills, or USB device.Wherein, mobile terminal 100 can be mobile phone, panel computer, MP3, MP4 or notebook computer etc.
First switch 112, comprise first end, the second end and control end, the first end of the first switch 112 is connected with charger 113, for accessing the detection signal generated by charger 200, second end of the first switch 112 is connected with LDO power supply 114, second end of the first switch 112 is output switching circuit, the control end of the first switch 112 is connected with processor 113, the switching of output switching circuit is controlled by processor 113, make the second end of the first switch 112 generate different level combinations according to detection signal, export LDO power supply 114 to; In the present embodiment, the first switch 112 is the single-pole double-throw switch (SPDT) of two-way, and namely the second Duan Wei tetra-tunnel of the first switch 112 exports, and processor 113 is switched by the plug-in strip of control first switch 112, can realize the switching of the output switching path of the first switch 112.
Processor 113, is connected with charger 200, and processor, according to type identification signal, carries out exchanges data with charger, or carries out switching controls to output switching circuit; In the present embodiment, processor 113 can be the central processing unit in mobile terminal 100, and this processor 113 can require the switching sequence of the output switching circuit of control first switch 112 according to the level combinations of high pressure communications protocol, to export different level combinations.
LDO power supply 114, is connected with charger 200, for according to level combinations, generates feedback signal, and exports charger 200 to, determines the charging voltage needing to export, realize the coupling of charging voltage to make charger 200.
This charging detecting circuit 110 also comprises:
Second switch 115; Second switch 115 comprises first end, the second end, the 3rd end and control end;
The first end of second switch 115, is connected with charger 200, for accessing the detection signal generated by charger 200; Second end of second switch 115, is connected with processor 113, and processor 113 is connected with charger 200 through second switch 115; 3rd end of second switch 115, is connected with the first end of the first switch 112, and the first end of the first switch 112 is connected with charger 200 through second switch 115; The control end of second switch 115, be connected with processor 113, processor 113 is according to type identification signal, the second end controlling second switch 115 is connected with processor 113, processor 113 and charger 200 is made to carry out exchanges data, or the 3rd end controlling second switch 115 is connected with the first end of the first switch 112, detection signal is exported to the first end of the first switch 112.In the present embodiment, second switch 115 is the selector switch of alternative, and the selection that can be controlled this second switch 115 by processor 113 is switched.
Wherein, detection module 111 comprises first end, the second end and the output for output type identification signal; The first end of detection module 111, is connected with charger 200, for accessing the detection signal generated by charger 200; Second end of detection module 111, is connected with the first end of second switch 115, make the first end of second switch 115 after testing module 111 be connected with charger 200; The output of detection module 111, is connected with processor 200, for output type identification signal to processor 200.In the present embodiment, the first end of detection module 111 is the incoming end that charging detecting circuit 110 accesses detection signal.
Further, the initial condition of second switch 115 is that the second end of second switch 115 is connected with processor 113.
Be described further below in conjunction with the charging detecting circuit 110 of operation principle to the present embodiment:
In the present embodiment, after charger 200 generates detection signal, detection signal is output to detection module 111, carries out BC1.2 detection by detection module 111, produces type identification signal, and exports processor 113 to; When recognition result is: be connected with mobile terminal 100 be USB device time, the second end that processor 113 controls second switch 115 is still connected with processor 113, namely the connection of the 3rd end of second switch and the first end of the first switch disconnects, now, carry out exchanges data between processor 113 and USB device, and determine that USB device needs output charging voltage to be 5V; When recognition result is: what be connected with mobile terminal 100 is that trip is when filling, the 3rd end that processor 113 controls second switch 115 is connected with the first end of the first switch 112, namely the second end of second switch 115 and the connection of processor 113 disconnect, now, detection signal exports the first switch 112 to through second switch 115, the output switching circuit of processor 113 to the first switch 112 controls, and makes the second end of the first switch 112 can export different level combinations.When LDO power supply 114 receives level combinations, LDO power supply 114 can generate feedback signal.
When charger 200 receives feedback signal, charger 200 can determine according to feedback signal the charging voltage needing output, and charging voltage is now the voltage defined, and can be 5V, 9V or 12V etc.Such as, if charger 200 draws according to feedback signal, mobile terminal 100 only supports the normal charge of 5V, and charger 200 exports the charging voltage of 5V; If charger 200 draws according to feedback signal, mobile terminal 100 supports the high-voltage charging of 9V, and charger 200 exports the charging voltage of 9V; By that analogy, the output of the charging voltage of 12V or higher is also determine according to feedback signal.
The embodiment of the present invention adopts above-mentioned circuit to arrange, and is detected the type of charger by detection module, produces type identification signal, and exports processor 113 to; Processor 113 carries out control treatment according to the type identification signal, to determine that charger 200 needs to export charging voltage; And, the embodiment of the present invention achieves and is arranged independent of charging circuit by charging detecting circuit 110, charging detecting circuit 110 and charging circuit are independent of each other, extend the flexibility of circuit design, and then charging circuit can be designed to be able to export higher charging voltage, to meet the demand of user, improve the experience of user.
Fig. 2, be the structural representation of the second embodiment of charging detecting circuit 110 of the present invention, this charging detecting circuit 110 comprises:
Detection module 111, first switch 112, processor 113 and low pressure difference linear voltage regulator LDO power supply 114;
Detection module 111, is connected with charger 200, the detection signal that detection module 111 generates according to charger 200, detects the type of charger 200, and generates type identification signal; Detection module 111 is also connected with processor 113, for exporting type identification signal to processor 113; Particularly: detection module 111 can be integrated IC, when detection module 111 receives detection signal, can BC1.2 detection be carried out, and then judge that the charger 200 be connected with mobile terminal 100 is that trip fills, or USB device.Wherein, mobile terminal 100 can be mobile phone, panel computer, MP3, MP4 or notebook computer etc.
First switch 112, comprise first end, the second end and control end, the first end of the first switch 112 is connected with charger 113, for accessing the detection signal generated by charger 200, second end of the first switch 112 is connected with LDO power supply 114, second end of the first switch 112 is output switching circuit, the control end of the first switch 112 is connected with processor 113, the switching of output switching circuit is controlled by processor 113, make the second end of the first switch 112 generate different level combinations according to detection signal, export LDO power supply 114 to; In the present embodiment, the first switch 112 is the single-pole double-throw switch (SPDT) of two-way, and namely the second Duan Wei tetra-tunnel of the first switch 112 exports, and processor 113 is switched by the plug-in strip of control first switch 112, can realize the switching of the output switching path of the first switch 112.
Processor 113, is connected with charger 200, and processor, according to type identification signal, carries out exchanges data with charger, or carries out switching controls to output switching circuit; In the present embodiment, processor 113 can be the central processing unit in mobile terminal 100, and this processor 113 can require the switching sequence of the output switching circuit of control first switch 112 according to the level combinations of high pressure communications protocol, to export different level combinations.
LDO power supply 114, is connected with charger 200, for according to level combinations, generates feedback signal, and exports charger 200 to, determines the charging voltage needing to export, realize the coupling of charging voltage to make charger 200.
This charging detecting circuit 110 also comprises:
Second switch 115; Second switch 115 comprises first end, the second end, the 3rd end and control end;
The first end of second switch 115, is connected with charger 200, for accessing the detection signal generated by charger 200; Second end of second switch 115, is connected with processor 113, and processor 113 is connected with charger 200 through second switch 115; 3rd end of second switch 115, is connected with the first end of the first switch 112, and the first end of the first switch 112 is connected with charger 200 through second switch 115; The control end of second switch 115, be connected with processor 113, processor 113 is according to type identification signal, the second end controlling second switch 115 is connected with processor 113, processor 113 and charger 200 is made to carry out exchanges data, or the 3rd end controlling second switch 115 is connected with the first end of the first switch 112, detection signal is exported to the first end of the first switch 112.In the present embodiment, second switch 115 is the selector switch of alternative, and the selection that can be controlled this second switch 115 by processor 113 is switched.
Wherein, detection module 111 comprises first end and the output for output type identification signal; The first end of detection module 111, is connected with processor 113, and the treated device 113 of detection module 111 is connected with charger 200; The output of detection module 111, is connected with processor 113, for output type identification signal to processor 113.In the present embodiment, the detection signal generated by charger 200 needs could arrive detection module carry out BC1.2 detection through second switch 115, processor 113, therefore, the initial condition of second switch 115 is that the second end of second switch 115 is connected with processor 113.In the present embodiment, the first end of second switch 115 is the incoming end that charging detecting circuit 110 accesses detection signal.
Further, detection module 111 and processor 113 form controller 116; Particularly: detection module 111 is integrated on processor 113, make the circuit structure in the present embodiment simpler.
Be described further below in conjunction with the charging detecting circuit 110 of operation principle to the present embodiment:
In the present embodiment, after charger 200 generates detection signal, detection signal is output to detection module 111, carries out BC1.2 detection by detection module 111, produces type identification signal, and exports processor 113 to; When recognition result is: be connected with mobile terminal 100 be USB device time, the second end that processor 113 controls second switch 115 is still connected with processor 113, namely the connection of the 3rd end of second switch and the first end of the first switch disconnects, now, carry out exchanges data between processor 113 and USB device, and determine that USB device needs output charging voltage to be 5V; When recognition result is: what be connected with mobile terminal 100 is that trip is when filling, the 3rd end that processor 113 controls second switch 115 is connected with the first end of the first switch 112, namely the second end of second switch 115 and the connection of processor 113 disconnect, now, detection signal exports the first switch 112 to through second switch 115, the output switching circuit of processor 113 to the first switch 112 controls, and makes the second end of the first switch 112 can export different level combinations.When LDO power supply 114 receives level combinations, LDO power supply 114 can generate feedback signal.
When charger 200 receives feedback signal, charger 200 can determine according to feedback signal the charging voltage needing output, and charging voltage is now the voltage defined, and can be 5V, 9V or 12V etc.Such as, if charger 200 draws according to feedback signal, mobile terminal 100 only supports the normal charge of 5V, and charger 200 exports the charging voltage of 5V; If charger 200 draws according to feedback signal, mobile terminal 100 supports the high-voltage charging of 9V, and charger 200 exports the charging voltage of 9V; By that analogy, the output of the charging voltage of 12V or higher is also determine according to feedback signal.
The embodiment of the present invention adopts above-mentioned circuit to arrange, and is detected the type of charger by detection module, produces type identification signal, and exports processor 113 to; Processor 113 carries out control treatment according to the type identification signal, to determine that charger 200 needs to export charging voltage; And, the embodiment of the present invention achieves and is arranged independent of charging circuit by charging detecting circuit 110, charging detecting circuit 110 and charging circuit are independent of each other, extend the flexibility of circuit design, and then charging circuit can be designed to be able to export higher charging voltage, to meet the demand of user, improve the experience of user.
Fig. 3 and Fig. 4, be the structural representation of two embodiments of mobile terminal 100 of the present invention, this mobile terminal 100 comprises:
Connector 120 and charging detecting circuit 110;
Connector 120, is connected with charger 200, and the detection signal generated by charger 200 is accessed to charging detecting circuit 110, also exports the feedback signal generated by charging detecting circuit 110 to charger 200;
Charging detecting circuit 110, is connected with connector 120, and charging detecting circuit 110 is connected with charger 200 through connector 120, and charging detecting circuit 110 is for generating feedback signal according to detection signal.
Particularly: this charging detecting circuit 110 comprises
Detection module 111, first switch 112, processor 113 and low pressure difference linear voltage regulator LDO power supply 114;
Detection module 111, is connected with charger 200, the detection signal that detection module 111 generates according to charger 200, detects the type of charger 200, and generates type identification signal; Detection module 111 is also connected with processor 113, for exporting type identification signal to processor 113; Particularly: detection module 111 can be integrated IC, when detection module 111 receives detection signal, can BC1.2 detection be carried out, and then judge that the charger 200 be connected with mobile terminal 100 is that trip fills, or USB device.Wherein, mobile terminal 100 can be mobile phone, panel computer, MP3, MP4 or notebook computer etc.
First switch 112, comprise first end, the second end and control end, the first end of the first switch 112 is connected with charger 113, for accessing the detection signal generated by charger 200, second end of the first switch 112 is connected with LDO power supply 114, second end of the first switch 112 is output switching circuit, the control end of the first switch 112 is connected with processor 113, the switching of output switching circuit is controlled by processor 113, make the second end of the first switch 112 generate different level combinations according to detection signal, export LDO power supply 114 to; In the present embodiment, the first switch 112 is the single-pole double-throw switch (SPDT) of two-way, and namely the second Duan Wei tetra-tunnel of the first switch 112 exports, and processor 113 is switched by the plug-in strip of control first switch 112, can realize the switching of the output switching path of the first switch 112.
Processor 113, is connected with charger 200, and processor, according to type identification signal, carries out exchanges data with charger, or carries out switching controls to output switching circuit; In the present embodiment, processor 113 can be the central processing unit in mobile terminal 100, and this processor 113 can require the switching sequence of the output switching circuit of control first switch 112 according to the level combinations of high pressure communications protocol, to export different level combinations.
LDO power supply 114, is connected with charger 200, for according to level combinations, generates feedback signal, and exports charger 200 to, determines the charging voltage needing to export, realize the coupling of charging voltage to make charger 200.
This charging detecting circuit 110 also comprises:
Second switch 115; Second switch 115 comprises first end, the second end, the 3rd end and control end;
The first end of second switch 115, is connected with charger 200, for accessing the detection signal generated by charger 200; Second end of second switch 115, is connected with processor 113, and processor 113 is connected with charger 200 through second switch 115; 3rd end of second switch 115, is connected with the first end of the first switch 112, and the first end of the first switch 112 is connected with charger 200 through second switch 115; The control end of second switch 115, be connected with processor 113, processor 113 is according to type identification signal, the second end controlling second switch 115 is connected with processor 113, processor 113 and charger 200 is made to carry out exchanges data, or the 3rd end controlling second switch 115 is connected with the first end of the first switch 112, detection signal is exported to the first end of the first switch 112.In the present embodiment, second switch 115 is the selector switch of alternative, and the selection that can be controlled this second switch 115 by processor 113 is switched.
Wherein, with reference to Fig. 3, as the first embodiment of mobile terminal of the present invention, detection module 111 can be, comprises first end, the second end and the output for output type identification signal; The first end of detection module 111, is connected with charger 200, for accessing the detection signal generated by charger 200; Second end of detection module 111, is connected with the first end of second switch 115, make the first end of second switch 115 after testing module 111 be connected with charger 200; The output of detection module 111, is connected with processor 200, for output type identification signal to processor 200.In the present embodiment, the first end of detection module 111 is the incoming end that charging detecting circuit 110 accesses detection signal, and namely in charging detecting circuit 110, the first end of detection module 111 is connected with connector 120.
Further, the initial condition of second switch 115 is that the second end of second switch 115 is connected with processor 113.
Or with reference to Fig. 4, as the second embodiment of mobile terminal of the present invention, detection module 111 can be, comprises first end and the output for output type identification signal; The first end of detection module 111, is connected with processor 113, and the treated device 113 of detection module 111 is connected with charger 200; The output of detection module 111, is connected with processor 113, for output type identification signal to processor 113.In the present embodiment, the detection signal generated by charger 200 needs could arrive detection module carry out BC1.2 detection through second switch 115, processor 113, therefore, the initial condition of second switch 115 is that the second end of second switch 115 is connected with processor 113.In the present embodiment, the first end of second switch 115 is the incoming end that charging detecting circuit 110 accesses detection signal, and namely in charging detecting circuit 110, the first end of second switch 115 is connected with connector 120.
Further, detection module 111 and processor 113 form controller 116; Particularly: detection module 111 is integrated on processor 113, make the circuit structure in the present embodiment simpler.
Below in conjunction with operation principle, mobile terminal 100 is described further:
In the present embodiment, after charger 200 generates detection signal, detection signal is output to detection module 111, carries out BC1.2 detection by detection module 111, produces type identification signal, and exports processor 113 to; When recognition result is: be connected with mobile terminal 100 be USB device time, the second end that processor 113 controls second switch 115 is still connected with processor 113, namely the connection of the 3rd end of second switch and the first end of the first switch disconnects, now, carry out exchanges data between processor 113 and USB device, and determine that USB device needs output charging voltage to be 5V; When recognition result is: what be connected with mobile terminal 100 is that trip is when filling, the 3rd end that processor 113 controls second switch 115 is connected with the first end of the first switch 112, namely the second end of second switch 115 and the connection of processor 113 disconnect, now, detection signal exports the first switch 112 to through second switch 115, the output switching circuit of processor 113 to the first switch 112 controls, and makes the second end of the first switch 112 can export different level combinations.When LDO power supply 114 receives level combinations, LDO power supply 114 can generate feedback signal.
When charger 200 receives feedback signal, charger 200 can determine according to feedback signal the charging voltage needing output, and charging voltage is now the voltage defined, and can be 5V, 9V or 12V etc.Such as, if charger 200 draws according to feedback signal, mobile terminal 100 only supports the normal charge of 5V, and charger 200 exports the charging voltage of 5V; If charger 200 draws according to feedback signal, mobile terminal 100 supports the high-voltage charging of 9V, and charger 200 exports the charging voltage of 9V; By that analogy, the output of the charging voltage of 12V or higher is also determine according to feedback signal.
The embodiment of the present invention adopts above-mentioned circuit to arrange, and is detected the type of charger by detection module, produces type identification signal, and exports processor 113 to; Processor 113 carries out control treatment according to the type identification signal, to determine that charger 200 needs to export charging voltage; And, the embodiment of the present invention achieves and is arranged independent of charging circuit by charging detecting circuit 110, charging detecting circuit 110 and charging circuit are independent of each other, extend the flexibility of circuit design, and then charging circuit can be designed to be able to export higher charging voltage, to meet the demand of user, improve the experience of user.
Fig. 5 and Fig. 6, be the structural representation of two embodiments of charging detection system of the present invention, this charging detection system comprises:
Charger 200 and mobile terminal 100, mobile terminal 100 comprises connector 120 and charging detecting circuit 110;
Charger 200, for generating detection signal, the feedback signal also for generating according to charging detecting circuit 110, determines the charging voltage needing to export;
Connector 120, is connected with charger 200, and the detection signal generated by charger 200 is accessed to charging detecting circuit 110, also exports the feedback signal generated by charging detecting circuit 110 to charger 200;
Charging detecting circuit 110, is connected with connector 120, and charging detecting circuit 110 is connected with charger 200 through connector 120, and charging detecting circuit 110 is for generating feedback signal according to detection signal.
Particularly: this charging detecting circuit 110 comprises
Detection module 111, first switch 112, processor 113 and low pressure difference linear voltage regulator LDO power supply 114;
Detection module 111, is connected with charger 200, the detection signal that detection module 111 generates according to charger 200, detects the type of charger 200, and generates type identification signal; Detection module 111 is also connected with processor 113, for exporting type identification signal to processor 113; Particularly: detection module 111 can be integrated IC, when detection module 111 receives detection signal, can BC1.2 detection be carried out, and then judge that the charger 200 be connected with mobile terminal 100 is that trip fills, or USB device.Wherein, mobile terminal 100 can be mobile phone, panel computer, MP3, MP4 or notebook computer etc.
First switch 112, comprise first end, the second end and control end, the first end of the first switch 112 is connected with charger 113, for accessing the detection signal generated by charger 200, second end of the first switch 112 is connected with LDO power supply 114, second end of the first switch 112 is output switching circuit, the control end of the first switch 112 is connected with processor 113, the switching of output switching circuit is controlled by processor 113, make the second end of the first switch 112 generate different level combinations according to detection signal, export LDO power supply 114 to; In the present embodiment, the first switch 112 is the single-pole double-throw switch (SPDT) of two-way, and namely the second Duan Wei tetra-tunnel of the first switch 112 exports, and processor 113 is switched by the plug-in strip of control first switch 112, can realize the switching of the output switching path of the first switch 112.
Processor 113, is connected with charger 200, and processor, according to type identification signal, carries out exchanges data with charger, or carries out switching controls to output switching circuit; In the present embodiment, processor 113 can be the central processing unit in mobile terminal 100, and this processor 113 can require the switching sequence of the output switching circuit of control first switch 112 according to the level combinations of high pressure communications protocol, to export different level combinations.
LDO power supply 114, is connected with charger 200, for according to level combinations, generates feedback signal, and exports charger 200 to, determines the charging voltage needing to export, realize the coupling of charging voltage to make charger 200.
This charging detecting circuit 110 also comprises:
Second switch 115; Second switch 115 comprises first end, the second end, the 3rd end and control end;
The first end of second switch 115, is connected with charger 200, for accessing the detection signal generated by charger 200; Second end of second switch 115, is connected with processor 113, and processor 113 is connected with charger 200 through second switch 115; 3rd end of second switch 115, is connected with the first end of the first switch 112, and the first end of the first switch 112 is connected with charger 200 through second switch 115; The control end of second switch 115, be connected with processor 113, processor 113 is according to type identification signal, the second end controlling second switch 115 is connected with processor 113, processor 113 and charger 200 is made to carry out exchanges data, or the 3rd end controlling second switch 115 is connected with the first end of the first switch 112, detection signal is exported to the first end of the first switch 112.In the present embodiment, second switch 115 is the selector switch of alternative, and the selection that can be controlled this second switch 115 by processor 113 is switched.
Wherein, with reference to Fig. 5, the first embodiment of detection system of charging as the present invention, detection module 111 can be, comprises first end, the second end and the output for output type identification signal; The first end of detection module 111, is connected with charger 200, for accessing the detection signal generated by charger 200; Second end of detection module 111, is connected with the first end of second switch 115, make the first end of second switch 115 after testing module 111 be connected with charger 200; The output of detection module 111, is connected with processor 200, for output type identification signal to processor 200.In the present embodiment, the first end of detection module 111 is the incoming end that charging detecting circuit 110 accesses detection signal, and namely in charging detecting circuit 110, the first end of detection module 111 is connected with connector 120.
Further, the initial condition of second switch 115 is that the second end of second switch 115 is connected with processor 113.
Or with reference to Fig. 6, the second embodiment of detection system of charging as the present invention, detection module 111 can also be, comprises first end and the output for output type identification signal; The first end of detection module 111, is connected with processor 113, and the treated device 113 of detection module 111 is connected with charger 200; The output of detection module 111, is connected with processor 113, for output type identification signal to processor 113.In the present embodiment, the detection signal generated by charger 200 needs could arrive detection module carry out BC1.2 detection through second switch 115, processor 113, therefore, the initial condition of second switch 115 is that the second end of second switch 115 is connected with processor 113.In the present embodiment, the first end of second switch 115 is the incoming end that charging detecting circuit 110 accesses detection signal, and namely in charging detecting circuit 110, the first end of second switch 115 is connected with connector 120.
Further, detection module 111 and processor 113 form controller 116; Particularly: detection module 111 is integrated on processor 113, make the circuit structure in the present embodiment simpler.
Below in conjunction with operation principle, charging detection system is further illustrated:
In the present embodiment, after charger 200 generates detection signal, detection signal is output to detection module 111, carries out BC1.2 detection by detection module 111, produces type identification signal, and exports processor 113 to; When recognition result is: be connected with mobile terminal 100 be USB device time, the second end that processor 113 controls second switch 115 is still connected with processor 113, namely the connection of the 3rd end of second switch and the first end of the first switch disconnects, now, carry out exchanges data between processor 113 and USB device, and determine that USB device needs output charging voltage to be 5V; When recognition result is: what be connected with mobile terminal 100 is that trip is when filling, the 3rd end that processor 113 controls second switch 115 is connected with the first end of the first switch 112, namely the second end of second switch 115 and the connection of processor 113 disconnect, now, detection signal exports the first switch 112 to through second switch 115, the output switching circuit of processor 113 to the first switch 112 controls, and makes the second end of the first switch 112 can export different level combinations.When LDO power supply 114 receives level combinations, LDO power supply 114 can generate feedback signal.
When charger 200 receives feedback signal, charger 200 can determine according to feedback signal the charging voltage needing output, and charging voltage is now the voltage defined, and can be 5V, 9V or 12V etc.Such as, if charger 200 draws according to feedback signal, mobile terminal 100 only supports the normal charge of 5V, and charger 200 exports the charging voltage of 5V; If charger 200 draws according to feedback signal, mobile terminal 100 supports the high-voltage charging of 9V, and charger 200 exports the charging voltage of 9V; By that analogy, the output of the charging voltage of 12V or higher is also determine according to feedback signal.
The embodiment of the present invention adopts above-mentioned circuit to arrange, and is detected the type of charger by detection module, produces type identification signal, and exports processor 113 to; Processor 113 carries out control treatment according to the type identification signal, to determine that charger 200 needs to export charging voltage; And, the embodiment of the present invention achieves and is arranged independent of charging circuit by charging detecting circuit 110, charging detecting circuit 110 and charging circuit are independent of each other, extend the flexibility of circuit design, and then charging circuit can be designed to be able to export higher charging voltage, to meet the demand of user, improve the experience of user.
Be one or more execution modes provided in conjunction with particular content as mentioned above, do not assert that specific embodiment of the invention is confined to these explanations.Method all and of the present invention, structure etc. are approximate, identical, or for making some technology deduction or replace under concept thereof of the present invention, all should be considered as protection scope of the present invention.
Claims (8)
1. a charging detecting circuit, is characterized in that, comprises detection module, the first switch, processor and low pressure difference linear voltage regulator LDO power supply;
Described detection module, is connected with charger, the detection signal that described detection module generates according to described charger, detects the type of described charger, and generates type identification signal; Described detection module is also connected with described processor, for exporting described type identification signal to described processor;
Described first switch, comprise first end, the second end and control end, the first end of described first switch is connected with described charger, for accessing the detection signal generated by described charger, second end of described first switch is connected with described LDO power supply, second end of described first switch is output switching circuit, the control end of described first switch is connected with described processor, the switching of described output switching circuit is controlled by described processor, make the second end of described first switch generate different level combinations according to described detection signal, export described LDO power supply to;
Described processor, is connected with described charger, and described processor, according to described type identification signal, carries out exchanges data with described charger, or carries out switching controls to described output switching circuit;
Described LDO power supply, is connected with described charger, for according to described level combinations, generates feedback signal, and exports described charger to, determines the charging voltage needing to export to make described charger.
2. charging detecting circuit as claimed in claim 1, is characterized in that, also comprise: second switch, described second switch, comprise first end, the second end, the 3rd end and control end;
The first end of described second switch, is connected with described charger, for accessing the detection signal generated by described charger;
Second end of described second switch, is connected with described processor, and described processor is connected with described charger through described second switch;
3rd end of described second switch, is connected with the first end of described first switch, and the first end of described first switch is connected with described charger through described second switch;
The control end of described second switch, be connected with described processor, described processor is according to described type identification signal, the second end controlling described second switch is connected with described processor, described processor and described charger is made to carry out exchanges data, or the 3rd end controlling described second switch is connected with the first end of described first switch, described detection signal is exported to the first end of described first switch.
3. charging detecting circuit as claimed in claim 2, it is characterized in that, described detection module comprises first end, the second end and the output for exporting described type identification signal;
The first end of described detection module, is connected with described charger, for accessing the detection signal generated by described charger;
Second end of described detection module, is connected with the first end of described second switch, and the first end of described second switch is connected with described charger through described detection module;
The output of described detection module, is connected with described processor, for exporting described type identification signal to described processor.
4. charging detecting circuit as claimed in claim 3, is characterized in that, the initial condition of described second switch is that the second end of described second switch is connected with described processor.
5. charging detecting circuit as claimed in claim 2, it is characterized in that, described detection module comprises first end and the output for exporting described type identification signal;
The first end of described detection module, is connected with described processor, and described detection module is connected with described charger through described processor;
The output of described detection module, is connected with described processor, for exporting described type identification signal to described processor.
The initial condition of described second switch is that the second end of described second switch is connected with described processor.
6. charging detecting circuit as claimed in claim 5, it is characterized in that, described detection module and described processor form controller.
7. a mobile terminal, is characterized in that, comprises connector and the charging detecting circuit as described in any one of claim 1 to 6;
Described connector, is connected with charger, and the detection signal generated by described charger is accessed to described charging detecting circuit, also exports the feedback signal generated by described charging detecting circuit to described charger;
Described charging detecting circuit, is connected with described connector, and described charging detecting circuit is connected with described charger through described connector, and described charging detecting circuit is used for generating described feedback signal according to described detection signal.
8. a charging detection system, it is characterized in that, comprise charger and mobile terminal, described mobile terminal comprises connector and the charging detecting circuit as described in any one of claim 1 to 6;
Described charger, for generating detection signal, the feedback signal also for generating according to described charging detecting circuit, determines the charging voltage needing to export;
Described connector, is connected with charger, and the detection signal generated by described charger is accessed to described charging detecting circuit, also exports the feedback signal generated by described charging detecting circuit to described charger;
Described charging detecting circuit, is connected with described connector, and described charging detecting circuit is connected with described charger through described connector, and described charging detecting circuit is used for generating described feedback signal according to described detection signal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510283857.3A CN105281395B (en) | 2015-05-28 | 2015-05-28 | A kind of charging detecting circuit, mobile terminal and charging detecting system |
| PCT/CN2016/080633 WO2016188301A1 (en) | 2015-05-28 | 2016-04-29 | Charging detection circuit, mobile terminal and charging detection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510283857.3A CN105281395B (en) | 2015-05-28 | 2015-05-28 | A kind of charging detecting circuit, mobile terminal and charging detecting system |
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| CN105281395B CN105281395B (en) | 2018-03-20 |
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Also Published As
| Publication number | Publication date |
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| WO2016188301A1 (en) | 2016-12-01 |
| CN105281395B (en) | 2018-03-20 |
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