CN203747392U - Electronic device and power supply adapter thereof - Google Patents
Electronic device and power supply adapter thereof Download PDFInfo
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- CN203747392U CN203747392U CN201420056714.XU CN201420056714U CN203747392U CN 203747392 U CN203747392 U CN 203747392U CN 201420056714 U CN201420056714 U CN 201420056714U CN 203747392 U CN203747392 U CN 203747392U
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Abstract
The utility model relates to an electronic device and a power supply adapter. According to the utility model, the power supply adapter which comprises a power supply module, a main control module, a voltage adjusting module, a current detection module, a voltage detecting module and an output switch module is provided for the electronic device; the main control module judges whether the output current of the power supply adapter is greater than a current threshold value, and judges whether the output voltage of the power supply adapter is greater than a voltage threshold value; if the output current is greater than the current threshold value and/or the output voltage is greater than the voltage threshold value, the main control module controls the output switch module to turn off direct current output of the power supply adapter; and if the electronic device determines that the power supply adapter outputs overcurrent and/or overvoltage and feeds back a charging closing command to the main control module, the main control module controls the output switch module to turn off the direct current output of the power supply adapter according to the charging closing command, thus overcurrent and/or overvoltage protection is carried out on a battery.
Description
Technical field
The utility model belongs to charging technique field, relates in particular to a kind of electronic equipment and power supply adaptor thereof.
Background technology
At present, most electronic equipments are to obtain direct current so that battery is charged by its communication interface from power supply adaptor, and in battery charging process, in order to shorten the charging interval, prior art can increase output current to reach the object of battery being carried out to quick charge by power supply adaptor, but, no matter be to adopt the conventional constant voltage way of output or adopt the mode that increases output current to charge to battery, if power supply adaptor occurs that in the process that battery is charged output voltage and/or output current are when excessive, can make battery because of overvoltage and/or cross current charge and damage.Therefore, prior art cannot realize overvoltage and/or overcurrent protection to battery in the time the battery in electronic equipment being carried out to normal charge or quick charge by power supply adaptor.
Utility model content
The purpose of this utility model is to provide a kind of power supply adaptor, is intended to solve prior art and cannot realizes battery in the time the battery in electronic equipment being carried out to normal charge or quick charge by power supply adaptor the problem of overvoltage and/or overcurrent protection.
The utility model is achieved in that a kind of power supply adaptor, and it has a communication interface, and described power supply adaptor charges to the battery in electronic equipment by described communication interface, and carries out data communication with described electronic equipment simultaneously; Described power supply adaptor comprises EMI filter circuit, high-voltage rectifying filter circuit, isolating transformer, output filter circuit and voltage-tracing and control circuit;
Described power supply adaptor also comprises power module, main control module, current potential adjusting module, current detection module, voltage detection module and output switch module;
The input of described power module connects the secondary end of described isolating transformer, the power end of described main control module, the power end of described current potential adjusting module and the power end of described current detection module are connected to the output of described power module altogether, the hot end of described main control module and the hot end of described current potential adjusting module are all connected the positive output end of described output filter circuit, the current potential adjustable side of described current potential adjusting module connects described voltage-tracing and control circuit, the direct-flow input end of described current detection module connects the positive output end of described output filter circuit, the inspection stream feedback end of described current detection module connects the current detecting end of described main control module, the output terminal of clock of described main control module is connected input end of clock and the data input pin of described current potential adjusting module with data output end, the first test side of described voltage detection module is connected respectively the DC output end of described current detection module and the negative output terminal of described output filter circuit with the second test side, the first output of described voltage detection module and the second output are connected respectively the first voltage detecting end and the second voltage test side of described main control module, the input of described output switch module connects the DC output end of described current detection module, the output of described output switch module is connected described communication interface with the negative output terminal of described output filter circuit, and the output of described output switch module connects the 3rd test side of described voltage detection module, the earth terminal of described output switch module connects the negative output terminal of described output filter circuit, the controlled end of described output switch module is connected respectively the switch control end of described main control module and the secondary end of described isolating transformer with power end, the output negative terminal of described output filter circuit, the output of described output switch module, the first communication ends of described main control module is all connected described communication interface with second communication end,
It is also described main control module, described current potential adjusting module and the power supply of described current detection module that described power module obtains power supply from described isolating transformer; The control signal that described current potential adjusting module sends according to described main control module drives described voltage-tracing and control circuit to adjust the output voltage of described isolating transformer; Described current detection module and described the voltage detection module respectively output current to described power supply adaptor and output voltage detect, and correspondingly feedback current detection signal and voltage detection signal to described main control module; The switch controlling signal that described output switch module is sent according to described main control module opens or closes the direct current output of described power supply adaptor;
In the time that the battery in described electronic equipment carries out normal charge or quick charge, described main control module judges according to described current detection signal whether the output current of described power supply adaptor is greater than current threshold, and judge according to described voltage detection signal whether the output voltage of described power supply adaptor is greater than voltage threshold, if described output current is greater than current threshold and/or described output voltage is greater than voltage threshold, described in described master control module controls, output switch module is closed the direct current output of described power supply adaptor;
Carry out in the process of data communication at described main control module and described electronic equipment, if described electronic equipment judges that described output current is greater than current threshold and/or described output voltage is greater than voltage threshold, and extremely described main control module of feedback charging out code, described main control module is closed the direct current output of described power supply adaptor according to output switch module described in described charging out code control.
Another object of the present utility model is also to provide a kind of electronic equipment, and it has battery, and described electronic equipment also disposes above-mentioned power supply adaptor.
The utility model is by providing the power supply adaptor that comprises power module, main control module, current potential adjusting module, current detection module, voltage detection module and output switch module for electronic equipment, whether the output current by master control module judges power supply adaptor is greater than current threshold, and whether the output voltage that judges power supply adaptor is greater than voltage threshold, if above-mentioned output current is greater than current threshold and/or above-mentioned output voltage is greater than voltage threshold, the direct current of master control module controls output switch module powered-down adapter output; In addition; if electronic equipment is judged the output of power supply adaptor and is existed overcurrent and/or overvoltage phenomenon feedback charging out code to main control module; main control module is exported according to the direct current of this charging out code control output switch module powered-down adapter, thereby has reached the object that battery is realized to overcurrent and/or overvoltage protection.
Brief description of the drawings
Fig. 1 is the modular structure figure of the power supply adaptor that provides of the utility model embodiment;
Fig. 2 is the exemplary circuit structure chart of the power supply adaptor that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 shows the modular structure of the power supply adaptor that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant to the utility model embodiment, and details are as follows:
The power supply adaptor 100 that the utility model embodiment provides has a communication interface 10, and power supply adaptor 100 charges to the battery 201 in electronic equipment 200 by this communication interface 10, and carries out data communication with electronic equipment 200 simultaneously.
Power supply adaptor 100 comprises EMI filter circuit 101, high-voltage rectifying filter circuit 102, isolating transformer 103, output filter circuit 104 and voltage-tracing and control circuit 105; Civil power carries out after electromagnetic interference filtering through EMI filter circuit 101, carry out rectifying and wave-filtering by high-voltage rectifying filter circuit 102 and process output high voltage direct current, this high voltage direct current export to after by isolating transformer 103 electrical isolation output filter circuit 104 taking after carrying out filtering and processing as battery 201 charges, voltage-tracing and control circuit 105 are adjusted the output voltage of isolating transformer 103 according to the output voltage of output filter circuit 104.
Power supply adaptor 100 also comprises power module 106, main control module 107, current potential adjusting module 108, current detection module 109, voltage detection module 110 and output switch module 111.
The input of power module 106 connects the secondary end of isolating transformer 103, the power end of main control module 107, the power end of the power end of current potential adjusting module 108 and current detection module 109 is connected to the output of power module 108 altogether, the hot end of main control module 107 and the hot end of current potential adjusting module 108 are all connected the positive output end of output filter circuit 104, the current potential adjustable side of current potential adjusting module 108 connects voltage-tracing and control circuit 105, the direct-flow input end of current detection module 109 connects the positive output end of output filter circuit 104, the inspection stream feedback end of current detection module 109 connects the current detecting end of main control module 107, the output terminal of clock of main control module 107 is connected input end of clock and the data input pin of current potential adjusting module 108 with data output end, the first test side of voltage detection module 110 is connected respectively the DC output end of current detection module 109 and the negative output terminal of output filter circuit 104 with the second test side, the first output of voltage detection module 110 and the second output are connected respectively the first voltage detecting end and the second voltage test side of main control module 107, the input of output switch module 111 connects the DC output end of current detection module 109, the output of output switch module 111 connects the 3rd test side of voltage detection module 110, the earth terminal of output switch module 111 connects the negative output terminal of output filter circuit 104, the controlled end of output switch module 111 is connected respectively the switch control end of main control module 107 and the secondary end of isolating transformer 103 with power end, the output negative terminal of output filter circuit 104, the output of output switch module 111, the first communication ends of main control module 107 and second communication end are all connected the communication interface 10 of power supply adaptor 100.
Power module 106 obtains power supply also for main control module 107, current potential adjusting module 108 and current detection module 109 are powered from isolating transformer 103; In the time that the battery 201 in electronic equipment 200 carries out quick charge, the control signal driving voltage that current potential adjusting module 108 sends according to main control module 107 is followed the tracks of with control circuit 105 output voltage of isolating transformer 103 is adjusted; Current detection module 109 and the voltage detection module 110 respectively output current to power supply adaptor 100 and output voltage detect, and correspondingly feedback current detection signal and voltage detection signal to main control module 107; The switch controlling signal that output switch module 111 is sent according to main control module 107 is opened or the direct current of powered-down adapter 100 is exported.
In the time that the battery 201 in electronic equipment 200 carries out normal charge or quick charge, main control module 107 judges according to above-mentioned current detection signal whether the output current of power supply adaptor 100 is greater than current threshold, and judge according to above-mentioned voltage detection signal whether the output voltage of power supply adaptor 100 is greater than voltage threshold, if the output current of power supply adaptor 100 is greater than the output voltage of current threshold and/or power supply adaptor 100 and is greater than voltage threshold, main control module 107 is controlled the direct current output of output switch module 111 powered-down adapters 100.
Carry out in the process of data communication at main control module 107 and electronic equipment 200, if electronic equipment 200 is judged the output voltage that the output current of power supply adaptor 100 is greater than current threshold and/or power supply adaptor 100 and is greater than voltage threshold, and feed back charging out code to main control module 107, main control module 107 is according to the direct current output of these charging out code control output switch module 111 powered-down adapters 100.
It should be noted that: the data communication between main control module 107 and electronic equipment 200 is carried out in charging process herein, in this process, no matter be in normal charge pattern or fast charge mode, main control module 107 all can send the output current of power supply adaptor 100 and output voltage to electronic equipment 200, electronic equipment 200 will judge whether overcurrent and/or overvoltage according to the output current of power supply adaptor 100 and output voltage in charging process, the process of the judgement process that the output current to power supply adaptor 100 and output voltage judge with above-mentioned main control module 107 is identical, so in the time that electronic equipment 200 judges that the output of power supply adaptor 100 exists overcurrent and/or overvoltage, the direct current output of main control module 107 powered-down adapters 100 is informed in electronic equipment 200 meeting feedback charging out codes.In addition; for electronic equipment 200; its communication interface that also can initiatively close self in the time judging that the output of power supply adaptor 100 exists overcurrent and/or overvoltage is connected with disconnection and power supply adaptor 100, thereby reaches the object that initiatively realizes overcurrent and/or overvoltage protection.
Fig. 2 shows the exemplary circuit structure of the power supply adaptor that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant to the utility model embodiment, and details are as follows:
Power module 106 comprises:
The first capacitor C 1, voltage stabilizing chip U1, the second capacitor C 2, the first inductance L 1, the second inductance L 2, the first diode D1, the second diode D2, the 3rd capacitor C 3, the first resistance R 1 and the second resistance R 2;
The input power pin Vin of the first end of the first capacitor C 1 and voltage stabilizing chip U1 and the common contact of enable pin EN are the input of power module 106, the ground pin GND of the second end of the first capacitor C 1 and voltage stabilizing chip U1 is connected to ground altogether, the switch pin SW of voltage stabilizing chip U1 and the first end of the second capacitor C 2 are connected to the first end of the first inductance L 1 altogether, the second end of the internal switch pin BOOST of voltage stabilizing chip U1 and the second capacitor C 2 is connected to the negative electrode of the first diode D1 altogether, the feedback voltage pin FB of voltage stabilizing chip U1 is connected with the first end of the first resistance R 1 and the first end of the second resistance R 2, the second end of the first inductance L 1 and the negative electrode of the second diode D2 are connected to the first end of the second inductance L 2 altogether, the second end of the second inductance L 2 and the anode of the first diode D1, it is the output of power module 106 that the second end of the first resistance R 1 and the first end of the 3rd capacitor C 3 connect formed common contact altogether, the second end of the second end of the anode of the second diode D2 and the second resistance R 2 and the 3rd capacitor C 3 is connected to ground altogether.Wherein, power module 106 taking voltage stabilizing chip U1 as core to the secondary end voltage of isolating transformer 103 carry out voltage transformation process after the voltage of output+3.3V power as main control module 107, current potential adjusting module 108 and current detection module 109; Voltage stabilizing chip U1 can be specifically that model is the buck DC-DC converter of MCP16301.
Main control module 107 comprises:
Main control chip U2, the 3rd resistance R 3, reference voltage chip U3, the 4th resistance R 4, the 5th resistance R 5, the 4th capacitor C 4, the 6th resistance R 6, the 7th resistance R 7, a NMOS pipe Q1, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R the 10, the 11 resistance R the 11, the 12 resistance R the 12, the 13 resistance R the 13 and the 14 resistance R 14;
The supply pin VDD of main control chip U3 is the power end of main control module 107, the lower margin VSS ground connection of main control chip U3, the first input and output pin RA0 sky of main control chip U3 connects, the first end of the 3rd resistance R 3 connects the supply pin VDD of main control chip U3, the second end of the 3rd resistance R 3 and the first end of the 4th resistance R 4 are connected to the anodal CATHODE of reference voltage chip U3 altogether, the negative pole ANODE ground connection of reference voltage chip U3, the empty pin NC sky of reference voltage chip U3 connects, the second end of the 4th resistance R 4 connects the second input and output pin RA1 of main control chip U2, the 3rd input and output pin RA2 of main control chip U2 is the current detecting end of main control module 107, the 4th input and output pin RA3 of main control chip U2 connects the first end of the 5th resistance R 5, the second end of the 5th resistance R 5 and the first end of the 4th capacitor C 4 are connected to the supply pin VDD of main control chip U2 altogether, the second end ground connection of the 4th capacitor C 4, the 5th input and output pin RA4 of main control chip U2 is the switch control end of main control module 107, the 6th input and output pin RA5 of main control chip U2 connects the first end of the 6th resistance R 6, the grid of the second end of the 6th resistance R 6 and NMOS pipe Q1 is connected to the first end of the 7th resistance R 7 altogether, the source electrode of the second end of the 7th resistance R 7 and NMOS pipe Q1 is connected to ground altogether, the drain electrode of the one NMOS pipe Q1 connects the first end of the 8th resistance R 8, the second end of the 8th resistance R 8 is the hot end of main control module 107, the 7th input and output pin RC0 of main control chip U2 and the 8th input and output pin RC1 are respectively output terminal of clock and the data output end of main control module 107, the tenth input and output pin RC3 of main control chip U2 and the 9th input and output pin RC2 are respectively the first voltage detecting end and the second voltage test side of main control module 107, the 11 input and output pin RC4 of main control chip U2 is connected respectively the first end of the 9th resistance R 9 and the first end of the tenth resistance R 10 with the 12 input and output pin RC5, the 11 first end of resistance R 11 and the first end of the 12 resistance R 12 are connected respectively the second end of the 9th resistance R 9 and the second end of the tenth resistance R 10, the second end of the 11 resistance R 11 and the second end of the 12 resistance R 12 are connected to ground altogether, the 13 first end of resistance R 13 and the first end of the 14 resistance R 14 are connected respectively the second end of the 9th resistance R 9 and the second end of the tenth resistance R 10, the second end of the 13 resistance R 13 and the second end of the 14 resistance R 14 are connected to the supply pin VDD of main control chip U2 altogether, the second end of the second end of the 9th resistance R 9 and the tenth resistance R 10 is respectively the first communication ends and the second communication end of main control module 107.Wherein, main control chip U2 can be specifically that model is the single-chip microcomputer of PIC12LF1822, PIC12F1822, PIC16LF1823 or PIC16F1823, and reference voltage chip U3 can be that model is the voltage reference device of LM4040.
Current potential adjusting module 108 comprises:
The 15 resistance R the 15, the 16 resistance R 16, digital regulation resistance U4, the 17 resistance R the 17, the 18 resistance R 18, the 5th capacitor C 5, the 6th capacitor C the 6 and the 19 resistance R 19;
The 15 first end of resistance R 15 and the first end of the 16 resistance R 16, the common contact of the supply pin VDD of digital regulation resistance U4 and the first end of the 5th capacitor C 5 is the power end of current potential adjusting module 108, the second end of the 5th capacitor C 5 and the first end of the 6th capacitor C 6, the lower margin VSS of digital regulation resistance U4 and the first end of the 17 resistance R 17 are connected to ground altogether, the second end of the 6th capacitor C 6 connects the supply pin VDD of digital regulation resistance U4, the common contact of the serial data pin SDA of the second end of the 15 resistance R 15 and digital regulation resistance U4 is the data input pin of current potential adjusting module 108, the common contact of the clock input pin SCL of the second end of the 16 resistance R 16 and digital regulation resistance U4 is the input end of clock of current potential adjusting module 108, the address zero pin A0 ground connection of digital regulation resistance U4, the first electric potential connection pin P0A of digital regulation resistance U4 and the first end of the 18 resistance R 18 are connected to the second end of the 17 resistance R 17 altogether, the second electric potential connection pin P0B of the second end of the 18 resistance R 18 and digital regulation resistance U4 is connected to the first end of the 19 resistance R 19 altogether, the second end of the 19 resistance R 19 is the hot end of current potential adjusting module 108, the current potential tap pin P0W of digital regulation resistance U4 is the current potential adjustable side of current potential adjusting module 108.Wherein, digital regulation resistance U4 adjusts inner slide rheostat according to clock signal and the data-signal of main control chip U2 output, thereby the current potential of the tap terminals (being the current potential tap pin P0W of digital regulation resistance U4) of inner slide rheostat is changed, and then make voltage-tracing and control circuit 105 follow this potential change the output voltage of isolating transformer 103 is adjusted; Digital regulation resistance U4 can be specifically the digital regulation resistance of MCP45X1.
Current detection module 109 comprises:
The 20 resistance R the 20, the 21 resistance R the 21, the 22 resistance R 22, the 7th capacitor C 7, the 8th capacitor C 8, inspection stream chip U5, the 23 resistance R 23, the tenth capacitor C 9, the tenth capacitor C the 10 and the 24 resistance R 24;
The first end of the 20 resistance R 20 and the second end are respectively direct-flow input end and the DC output end of current detection module 109, the 21 first end of resistance R 21 and the first end of the 22 resistance R 22 are connected respectively first end and second end of the 20 resistance R 20, the second end of the 21 resistance R 21 and the first end of the 7th capacitor C 7 are connected to the positive pin IN+ of input of inspection stream chip U5 altogether, the second end of the 22 resistance R 22 and the first end of the 8th capacitor C 8 are connected to the negative pin IN-of input of inspection stream chip U5 altogether, the common contact of the supply pin V+ of inspection stream chip U5 and the first end of the 9th capacitor C 9 is the power end of current detection module 109, the empty pin NC sky of inspection stream chip U5 connects, the output pin OUT of inspection stream chip U5 connects the first end of the 23 resistance R 23, the second end of the 23 resistance R 23 is the inspection stream feedback end of current detection module 109, the tenth first end of capacitor C 10 and the first end of the 24 resistance R 24 are connected to the second end of the 23 resistance R 23 altogether, the second end of the second end of the 7th capacitor C 7 and the 8th capacitor C 8, the second end of the 9th capacitor C 9, the second end of the tenth capacitor C 10, the second end of the 24 resistance R 24, the lower margin GND of inspection stream chip U5, the first reference voltage pin REF1 and the second reference voltage pin REF2 are connected to ground altogether.Wherein, the 20 resistance R 20 as inspection leakage resistances the output current (being the output current of power supply adaptor 100) to output filter circuit 104 sample, then by inspection flow chip U5 according to the Voltage-output current detection signal at the 20 resistance R 20 two ends to main control chip U2; Inspection stream chip U5 can be specifically that model is the current distributing watch-dog of INA286.
Voltage detection module 110 comprises:
The 25 resistance R the 25, the 26 resistance R the 26, the 11 capacitor C the 11, the 12 capacitor C the 12, the 27 resistance R the 27 and the 28 resistance R 28;
The first end of the 25 resistance R 25 is the first test side of voltage detection module 110, the second end of the 25 resistance R 25 and the common contact of the 26 first end of resistance R 26 and the first end of the 11 capacitor C 11 are the second output of voltage detection module 110, the second end of the 26 resistance R 26 is the second test side of voltage detection module 110, the second end of the 11 capacitor C 11 and the 12 first end of capacitor C 12 and the first end of the 27 resistance R 27 are connected to the second end of the 26 resistance R 26 altogether, the common contact of the second end of the 12 capacitor C 12 and the second end of the 27 resistance R 27 and the first end of the 28 resistance R 28 is the first output of voltage detection module 110, the second end of the 28 resistance R 28 is the 3rd test side of voltage detection module 110.
Output switch module 111 comprises:
The 29 resistance R the 29, the 30 resistance R the 30, the 13 capacitor C the 13, the 31 resistance R 31, a NPN type triode N1, the 32 resistance R 32, the 2nd NPN type triode N2, the 3rd diode D3, voltage stabilizing didoe ZD, the 33 resistance R the 33, the 34 resistance R the 34, the 35 resistance R 35, the 2nd NMOS pipe Q2 and the 3rd NMOS pipe Q3;
The first end of the 29 resistance R 29 is the controlled end of output switch module 111, the second end of the 29 resistance R 29 and the first end of the 30 resistance R 30 are connected to the base stage of a NPN type triode N1 altogether, the first end of the 13 capacitor C 13 and the 31 first end of resistance R 31 and the first end of the 32 resistance R 32 are connected to the negative electrode of the 3rd diode D3 altogether, the anode of the 3rd diode D3 is the power end of output switch module 111, the base stage of the second end of the 31 resistance R 31 and the 2nd NPN type triode N2 is connected to the collector electrode of a NPN type triode N1 altogether, the second end of the 32 resistance R 32 and the negative electrode of voltage stabilizing didoe ZD and the first end of the 33 resistance R 33 are connected to the collector electrode of the 2nd NPN type triode N2 altogether, the second end of the 30 resistance R 30 and the second end of the 13 capacitor C 13, the emitter of the one NPN type triode N1, the 2nd emitter of NPN type triode N2 and the anode of voltage stabilizing didoe ZD are connected to ground altogether, the second end of the 33 resistance R 33 and the first end of the 34 resistance R 34, the first end of the 35 resistance R 35, the grid of the grid of the 2nd NMOS pipe Q2 and the 3rd NMOS pipe Q3 connects altogether, the second end of the 34 resistance R 34 is the earth terminal of output switch module 111, the drain electrode of the 2nd NMOS pipe Q2 is the input of output switch module 111, the 2nd NMOS pipe source electrode of Q2 and the second end of the 35 resistance R 35 are connected to the source electrode of the 3rd NMOS pipe Q3 altogether, the drain electrode of the 3rd NMOS pipe Q3 is the output of output switch module 111.Wherein, the 2nd NMOS pipe Q2 and the 3rd NMOS pipe Q3 conducting simultaneously or cut-off are with the direct current output of unlatching or powered-down adapter 100.
Power supply adaptor 100 based on above-mentioned, the utility model embodiment also provides a kind of electronic equipment, and it has battery 201, and disposes above-mentioned power supply adaptor 100.
The utility model embodiment is by providing and comprise power module 106 for electronic equipment 200, main control module 107, current potential adjusting module 108, current detection module 109, the power supply adaptor 100 of voltage detection module 110 and output switch module 111, whether the output current that is judged power supply adaptor 100 by main control module 107 is greater than current threshold, and whether the output voltage that judges power supply adaptor 100 is greater than voltage threshold, if the output current of power supply adaptor 100 is greater than the output voltage of current threshold and/or power supply adaptor 100 and is greater than voltage threshold, main control module 107 is controlled the direct current output of output switch module 111 powered-down adapters 100, in addition, if electronic equipment 200 is judged the output of power supply adaptor 100 and is existed overcurrent and/or overvoltage phenomenon feedback charging out code to main control module 107, main control module 107 is exported according to the direct current of these charging out code control output switch module 111 powered-down adapters 100, thereby has reached the object that battery 201 is realized to overcurrent and/or overvoltage protection.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (8)
1. a power supply adaptor, it has a communication interface, and described power supply adaptor charges to the battery in electronic equipment by described communication interface, and carries out data communication with described electronic equipment simultaneously; Described power supply adaptor comprises EMI filter circuit, high-voltage rectifying filter circuit, isolating transformer, output filter circuit and voltage-tracing and control circuit; It is characterized in that, described power supply adaptor also comprises power module, main control module, current potential adjusting module, current detection module, voltage detection module and output switch module;
The input of described power module connects the secondary end of described isolating transformer, the power end of described main control module, the power end of described current potential adjusting module and the power end of described current detection module are connected to the output of described power module altogether, the hot end of described main control module and the hot end of described current potential adjusting module are all connected the positive output end of described output filter circuit, the current potential adjustable side of described current potential adjusting module connects described voltage-tracing and control circuit, the direct-flow input end of described current detection module connects the positive output end of described output filter circuit, the inspection stream feedback end of described current detection module connects the current detecting end of described main control module, the output terminal of clock of described main control module is connected input end of clock and the data input pin of described current potential adjusting module with data output end, the first test side of described voltage detection module is connected respectively the DC output end of described current detection module and the negative output terminal of described output filter circuit with the second test side, the first output of described voltage detection module and the second output are connected respectively the first voltage detecting end and the second voltage test side of described main control module, the input of described output switch module connects the DC output end of described current detection module, the output of described output switch module connects the 3rd test side of described voltage detection module, the earth terminal of described output switch module connects the negative output terminal of described output filter circuit, the controlled end of described output switch module is connected respectively the switch control end of described main control module and the secondary end of described isolating transformer with power end, the output negative terminal of described output filter circuit, the output of described output switch module, the first communication ends of described main control module is all connected described communication interface with second communication end,
It is also described main control module, described current potential adjusting module and the power supply of described current detection module that described power module obtains power supply from described isolating transformer; In the time that the battery in described electronic equipment carries out quick charge, the control signal that described current potential adjusting module sends according to described main control module drives described voltage-tracing and control circuit to adjust the output voltage of described isolating transformer; Described current detection module and described the voltage detection module respectively output current to described power supply adaptor and output voltage detect, and correspondingly feedback current detection signal and voltage detection signal to described main control module; The switch controlling signal that described output switch module is sent according to described main control module opens or closes the direct current output of described power supply adaptor;
In the time that the battery in described electronic equipment carries out normal charge or quick charge, described main control module judges according to described current detection signal whether the output current of described power supply adaptor is greater than current threshold, and judge according to described voltage detection signal whether the output voltage of described power supply adaptor is greater than voltage threshold, if described output current is greater than current threshold and/or described output voltage is greater than voltage threshold, described in described master control module controls, output switch module is closed the direct current output of described power supply adaptor;
Carry out in the process of data communication at described main control module and described electronic equipment, if described electronic equipment judges that described output current is greater than current threshold and/or described output voltage is greater than voltage threshold, and extremely described main control module of feedback charging out code, described main control module is closed the direct current output of described power supply adaptor according to output switch module described in described charging out code control.
2. power supply adaptor as claimed in claim 1, is characterized in that, described power module comprises:
The first electric capacity, voltage stabilizing chip, the second electric capacity, the first inductance, the second inductance, the first diode, the second diode, the 3rd electric capacity, the first resistance and the second resistance;
The input that the input power pin of the first end of described the first electric capacity and described voltage stabilizing chip and the common contact of enable pin are described power module, the second end of described the first electric capacity and the ground pin of described voltage stabilizing chip are connected to ground altogether, the first end of the switch pin of described voltage stabilizing chip and described the second electric capacity is connected to the first end of described the first inductance altogether, the internal switch pin of described voltage stabilizing chip and the second end of described the second electric capacity are connected to the negative electrode of described the first diode altogether, the feedback voltage pin of described voltage stabilizing chip is connected with the first end of the first end of described the first resistance and described the second resistance, the second end of described the first inductance and the negative electrode of described the second diode are connected to the first end of described the second inductance altogether, the second end of described the second inductance and the anode of described the first diode, the second end of described the first resistance and the first end of described the 3rd electric capacity connect the output that formed common contact is described power module altogether, the second end of the second end of the anode of described the second diode and described the second resistance and described the 3rd electric capacity is connected to ground altogether.
3. power supply adaptor as claimed in claim 1, is characterized in that, described main control module comprises:
Main control chip, the 3rd resistance, reference voltage chip, the 4th resistance, the 5th resistance, the 4th electric capacity, the 6th resistance, the 7th resistance, a NMOS pipe, the 8th resistance, the 9th resistance, the tenth resistance, the 11 resistance, the 12 resistance, the 13 resistance and the 14 resistance;
The supply pin of described main control chip is the power end of described main control module, the lower margin ground connection of described main control chip, the first input and output pin sky of described main control chip connects, the first end of described the 3rd resistance connects the supply pin of described main control chip, the second end of described the 3rd resistance and the first end of described the 4th resistance are connected to the positive pole of described reference voltage chip altogether, the minus earth of described reference voltage chip, the empty pin sky of described reference voltage chip U3 connects, the second end of described the 4th resistance connects the second input and output pin of described main control chip, the current detecting end that the 3rd input and output pin of described main control chip is described main control module, the 4th input and output pin of described main control chip connects the first end of described the 5th resistance, the second end of described the 5th resistance and the first end of described the 4th electricity are connected to the supply pin of described main control chip altogether, the second end ground connection of described the 4th electric capacity, the switch control end that the 5th input and output pin of described main control chip is described main control module, the 6th input and output pin of described main control chip connects the first end of described the 6th resistance, the second end of described the 6th resistance and the grid of a described NMOS pipe are connected to the first end of described the 7th resistance altogether, the second end of described the 7th resistance and the source electrode of a described NMOS pipe are connected to ground altogether, the drain electrode of a described NMOS pipe connects the first end of described the 8th resistance, the hot end that the second end of described the 8th resistance is described main control module, the 7th input and output pin of described main control chip and the 8th input and output pin are respectively output terminal of clock and the data output end of described main control module, the tenth input and output pin of described main control chip and the 9th input and output pin are respectively the first voltage detecting end and the second voltage test side of described main control module, the 11 input and output pin and the 12 input and output pin of described main control chip are connected respectively the first end of described the 9th resistance and the first end of described the tenth resistance, the second end of the described connection of first end difference the 9th resistance of the first end of described the 11 resistance and described the 12 resistance and the second end of described the tenth resistance, the second end of described the 11 resistance and the second end of described the 12 resistance are connected to ground altogether, described the 13 first end of resistance and the first end of described the 14 resistance are connected respectively the second end of described the 9th resistance and the second end of described the tenth resistance, the second end of described the 13 resistance and the second end of described the 14 resistance are connected to the supply pin of described main control chip altogether, the second end of the second end of described the 9th resistance and described the tenth resistance is respectively the first communication ends and the second communication end of described main control module.
4. power supply adaptor as claimed in claim 1, is characterized in that, described current potential adjusting module comprises:
The 15 resistance, the 16 resistance, digital regulation resistance, the 17 resistance, the 18 resistance, the 5th electric capacity, the 6th electric capacity and the 19 resistance;
Described the 15 first end of resistance and the first end of described the 16 resistance, the common contact of the first end of the supply pin of described digital regulation resistance and described the 5th electric capacity is the power end of described current potential adjusting module, the second end of described the 5th electric capacity and the first end of described the 6th electric capacity, the lower margin of described digital regulation resistance and the first end of described the 17 resistance are connected to ground altogether, the second end of described the 6th electric capacity connects the supply pin of described digital regulation resistance, the common contact of the second end of described the 15 resistance and the serial data pin of described digital regulation resistance is the data input pin of described current potential adjusting module, the common contact of the second end of described the 16 resistance and the clock input pin of described digital regulation resistance is the input end of clock of described current potential adjusting module, the address zero pin ground connection of described digital regulation resistance, the first electric potential connection pin of described digital regulation resistance and the first end of described the 18 resistance are connected to the second end of described the 17 resistance altogether, the second electric potential connection pin of the second end of described the 18 resistance and described digital regulation resistance is connected to the first end of described the 19 resistance altogether, the second end of described the 19 resistance is the hot end of described current potential adjusting module, the current potential tap pin of described digital regulation resistance is the current potential adjustable side of described current potential adjusting module.
5. power supply adaptor as claimed in claim 1, is characterized in that, described current detection module comprises:
The 20 resistance, the 21 resistance, the 22 resistance, the 7th electric capacity, the 8th electric capacity, inspection stream chip, the 23 resistance, the tenth electric capacity, the tenth electric capacity and the 24 resistance;
The first end of described the 20 resistance and the second end are respectively direct-flow input end and the DC output end of described current detection module, described the 21 first end of resistance and the first end of described the 22 resistance are connected respectively first end and second end of described the 20 resistance, the second end of described the 21 resistance and the first end of described the 7th electric capacity are connected to the positive pin of input of described inspection stream chip altogether, the second end of described the 22 resistance and the first end of described the 8th electric capacity are connected to the negative pin of input of described inspection stream chip altogether, the power end that the common contact of the described inspection stream supply pin of chip and the first end of the 9th electric capacity is described current detection module, the empty pin sky of described inspection stream chip connects, the output pin of described inspection stream chip connects the first end of described the 23 resistance, the inspection stream feedback end that the second end of described the 23 resistance is described current detection module, described the tenth first end of electric capacity and the first end of described the 24 resistance are connected to the second end of described the 23 resistance altogether, the second end of the second end of described the 7th electric capacity and described the 8th electric capacity, the second end of described the 9th electric capacity, the second end of described the tenth electric capacity, the second end of described the 24 resistance, the lower margin of described inspection stream chip, the first reference voltage pin and the second reference voltage pin are connected to ground altogether.
6. power supply adaptor as claimed in claim 1, is characterized in that, described voltage detection module comprises:
The 25 resistance, the 26 resistance, the 11 electric capacity, the 12 electric capacity, the 27 resistance and the 28 resistance;
The first end of described the 25 resistance is the first test side of described voltage detection module, the second output that the common contact of the second end of described the 25 resistance and described the 26 first end of resistance and the first end of described the 11 electric capacity is described voltage detection module, the second test side that the second end of described the 26 resistance is described voltage detection module, the second end of described the 11 electric capacity and described the 12 first end of electric capacity and the first end of described the 27 resistance are connected to the second end of described the 26 resistance altogether, the first output that the common contact of the second end of described the 12 electric capacity and the second end of described the 27 resistance and the first end of described the 28 resistance is described voltage detection module, the 3rd test side that the second end of described the 28 resistance is described voltage detection module.
7. power supply adaptor as claimed in claim 1, is characterized in that, described output switch module comprises:
The 29 resistance, the 30 resistance, the 13 electric capacity, the 31 resistance, a NPN type triode, the 32 resistance, the 2nd NPN type triode, the 3rd diode, voltage stabilizing didoe, the 33 resistance, the 34 resistance, the 35 resistance, the 2nd NMOS pipe and the 3rd NMOS pipe;
The first end of described the 29 resistance is the controlled end of described output switch module, the second end of described the 29 resistance and the first end of described the 30 resistance are connected to the base stage of a described NPN type triode altogether, the first end of described the 13 electric capacity and described the 31 first end of resistance and the first end of described the 32 resistance are connected to the negative electrode of described the 3rd diode altogether, the anode of described the 3rd diode is the power end of described output switch module, the base stage of the second end of described the 31 resistance and described the 2nd NPN type triode is connected to the collector electrode of a described NPN type triode altogether, the second end of described the 32 resistance and the negative electrode of described voltage stabilizing didoe and the first end of described the 33 resistance are connected to the collector electrode of described the 2nd NPN type triode altogether, the second end of described the 30 resistance and the second end of described the 13 electric capacity, the emitter of a described NPN type triode, described the 2nd emitter of NPN type triode and the anode of described voltage stabilizing didoe are connected to ground altogether, the second end of described the 33 resistance and the first end of described the 34 resistance, the first end of described the 35 resistance, the grid of the grid of described the 2nd NMOS pipe and described the 3rd NMOS pipe connects altogether, the second end of described the 34 resistance is the earth terminal of described output switch module, the drain electrode of described the 2nd NMOS pipe is the input of described output switch module, the second end of the source electrode of described the 2nd NMOS pipe and described the 35 resistance is connected to the source electrode of described the 3rd NMOS pipe altogether, the drain electrode of described the 3rd NMOS pipe is the output of described output switch module.
8. an electronic equipment, it has battery, it is characterized in that, and described electronic equipment also disposes the power supply adaptor as described in claim 1 to 7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420056714.XU CN203747392U (en) | 2014-01-28 | 2014-01-28 | Electronic device and power supply adapter thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420056714.XU CN203747392U (en) | 2014-01-28 | 2014-01-28 | Electronic device and power supply adapter thereof |
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| CN203747392U true CN203747392U (en) | 2014-07-30 |
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| CN201420056714.XU Expired - Fee Related CN203747392U (en) | 2014-01-28 | 2014-01-28 | Electronic device and power supply adapter thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103795040A (en) * | 2014-01-28 | 2014-05-14 | 广东欧珀移动通信有限公司 | Electronic device and power adapter thereof |
| WO2016127763A1 (en) * | 2015-02-12 | 2016-08-18 | 中兴通讯股份有限公司 | Remote feeding supply circuit of u interface |
| CN107918076A (en) * | 2015-06-12 | 2018-04-17 | 广东欧珀移动通信有限公司 | A kind of power supply adaptor detection method and power supply adaptor detection device |
| WO2018076623A1 (en) * | 2016-10-26 | 2018-05-03 | 中兴通讯股份有限公司 | Method and device for detecting charging abnormality and power adapter |
| US10211656B2 (en) | 2014-01-28 | 2019-02-19 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Power adapter, terminal, and method for processing exception of charging loop |
| US11545843B2 (en) | 2014-01-28 | 2023-01-03 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Battery charging apparatus and battery charging protection control method |
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2014
- 2014-01-28 CN CN201420056714.XU patent/CN203747392U/en not_active Expired - Fee Related
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| US10218192B2 (en) | 2014-01-28 | 2019-02-26 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Electronic device and power adapter, including main control circuit, therefor |
| US10211656B2 (en) | 2014-01-28 | 2019-02-19 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Power adapter, terminal, and method for processing exception of charging loop |
| CN103795040B (en) * | 2014-01-28 | 2016-11-09 | 广东欧珀移动通信有限公司 | Electronic equipment and power supply adaptor thereof |
| US10008868B2 (en) | 2014-01-28 | 2018-06-26 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Electronic device and power adapter, including main control circuit, thereof |
| US11545843B2 (en) | 2014-01-28 | 2023-01-03 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Battery charging apparatus and battery charging protection control method |
| US11342765B2 (en) | 2014-01-28 | 2022-05-24 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Terminal, power adapter and method for handling charging anomaly |
| CN103795040A (en) * | 2014-01-28 | 2014-05-14 | 广东欧珀移动通信有限公司 | Electronic device and power adapter thereof |
| CN105991295A (en) * | 2015-02-12 | 2016-10-05 | 中兴通讯股份有限公司 | Remote feeding supply circuit of U interface |
| WO2016127763A1 (en) * | 2015-02-12 | 2016-08-18 | 中兴通讯股份有限公司 | Remote feeding supply circuit of u interface |
| CN105991295B (en) * | 2015-02-12 | 2020-03-13 | 中兴通讯股份有限公司 | U interface remote supply feed circuit |
| CN107918076A (en) * | 2015-06-12 | 2018-04-17 | 广东欧珀移动通信有限公司 | A kind of power supply adaptor detection method and power supply adaptor detection device |
| CN107918076B (en) * | 2015-06-12 | 2020-02-14 | Oppo广东移动通信有限公司 | Power adapter detection method and power adapter detection device |
| CN107991571A (en) * | 2016-10-26 | 2018-05-04 | 中兴通讯股份有限公司 | It is a kind of to detect the abnormal method, apparatus of charging and power supply adaptor |
| WO2018076623A1 (en) * | 2016-10-26 | 2018-05-03 | 中兴通讯股份有限公司 | Method and device for detecting charging abnormality and power adapter |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523841 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20140730 |