CN105490360A - Mobile phone wireless charging circuit - Google Patents
Mobile phone wireless charging circuit Download PDFInfo
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- CN105490360A CN105490360A CN201610012506.3A CN201610012506A CN105490360A CN 105490360 A CN105490360 A CN 105490360A CN 201610012506 A CN201610012506 A CN 201610012506A CN 105490360 A CN105490360 A CN 105490360A
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Abstract
The invention discloses a mobile phone wireless charging circuit. The mobile phone wireless charging circuit mainly comprises a wireless transmitting module and a receiving module; the wireless transmitting module comprises a voltage transformation circuit, a rectifying voltage-stabilizing circuit, a high frequency inversion circuit and a detection circuit; and the receiving module comprises a rectifying voltage-stabilizing circuit and a charging management circuit. The high frequency inversion circuit and the detection circuit of the transmitting module are operating around the efficiency peak, and the circuit safety is greatly ensured; the output voltage of the rectifying voltage-stabilizing circuit of the receiving module is adjustable, and a charging management chip can be operated in the best state; and therefore, safe and rapid mobile phone charge can be realized by appropriately selecting the charging management chip. The mobile phone wireless charging circuit has the characteristics of convenient use, high reliability, safety, stability and the like.
Description
Technical field
The invention belongs to wireless charging technical field, relate to a kind of circuit, be specifically related to a kind of mobile phone wireless charging circuit.
Background technology
Along with smart mobile phone screen is increasing, function gets more and more, and power consumption is increasing, and mobile phone charging is also more and more frequent, mixed and disorderly data wire and frequently plug make people feel to be pestered beyond endurance for charging process, and therefore people need the more reliable charging method easily of one.Mobile phone wireless charging technique be a kind of rely on space magnetic field be coupled by the delivery of electrical energy of feeder ear to battery of mobile phone thus to the technology that it charges, overcome conventional mobile phone charging drawback.Although this technology has received the concern of associated mechanisms and enterprise and has had some Related products to appear on the market, existing already present wireless charging product have charging rate slowly, larger etc. to the infringement of battery of mobile phone defect.
Summary of the invention
Object of the present invention is exactly the deficiency for existing mobile phone wireless charging circuit, provides a kind of mobile phone wireless charging circuit.
The present invention is by the following technical solutions:
A kind of mobile phone wireless charging circuit, comprise wireless transmission and receive two large modules, and wireless sending module comprises Transformer Rectifier voltage stabilizing circuit, high-frequency inverter circuit, voltage detecting circuit, current detection circuit, receiver module comprises regulator rectifier circuit, charge management circuit two parts.
Transformer Rectifier voltage stabilizing circuit, comprises transformer T1, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the 5th electric capacity C5, the 6th electric capacity C6, the first diode D1, the second diode D2, the 3rd diode D3, a 4th diode D4 and voltage stabilizing chip LM7824;
First electric capacity C1 is connected in parallel on transformer T1 two ends; The positive pole of the first diode D1 is connected on one end of the first electric capacity C1, and negative pole is connected with the negative pole of the second diode D2; The positive pole of the second diode D2 is connected on the other end of the first electric capacity C1, and negative pole is connected with the VIN pin of voltage stabilizing chip LM7824; The positive pole of the 3rd diode D3, the positive pole of the 4th diode D4 meet GND, and the negative pole of the 3rd diode D3 is connected with the positive pole of the first diode D1, and the negative pole of the 4th diode D4 is connected with the positive pole of the second diode D2; The positive pole of the second electric capacity C2 is connected with the VIN pin of voltage stabilizing chip LM7824, and negative pole meets GND, and the 3rd electric capacity C3 is connected in parallel on VIN and the GND two ends of voltage stabilizing chip LM7824, and the 4th, six electric capacity C4, C6 are connected in parallel between VOUT and GND of voltage stabilizing chip LM7824; 5th electric capacity C5 is connected in parallel on VOUT pin and the GND two ends of voltage stabilizing chip LM7824, and the GND pin of voltage stabilizing chip LM7824 meets GND; The VOUT pin of voltage stabilizing chip LM7824 is as 24V voltage output end;
High-frequency inverter circuit comprises the 7th electric capacity C7, 8th electric capacity C8, 9th electric capacity C9, tenth electric capacity C10, 11 electric capacity C11, 12 electric capacity C12, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, second driving chip U2, 3rd driving chip U3, 5th diode D5, 6th diode D6, 7th diode D7, 8th diode D8, 9th diode D9, tenth diode D10, one IGBTV1, 2nd IGBTV2, 3rd IGBTV3, 4th IGBTV4, first inductance L 1, second driving chip U2 and the 3rd driving chip U3, the model of the second driving chip U2 is IR2302, the model of the 3rd driving chip U3 is IR2302,
The PWM1 that single-chip microcomputer produces is input to 2 pins of the second driving chip U2, 4 pins that one end of the first resistance R1 is connected on the second driving chip connect and meet GND, another termination PWM1, 1 pin of the second driving chip is connected with one end of the positive pole of the 5th diode D5 and the 7th electric capacity C7 and meets VCC, another termination GND of 7th electric capacity C7, 8 pins of the second driving chip and one end of the 8th electric capacity C8, the negative pole of the 5th diode D5 connects, 6 pins of the second driving chip are connected with the other end of the 8th electric capacity C8, 7 pins of the second driving chip are connected with one end of the second resistance R2, the other end of the second resistance R2 is held with the G of IGBTV1 and is connected, 5 pins of the second driving chip are connected with one end of the 3rd resistance R3, the other end of the 3rd resistance R3 is held with the G of the 2nd IGBTV2 and is connected, the one termination GND of the tenth electric capacity C10, the positive pole of the other end and the 9th electric capacity C9, the negative pole of the 6th diode D6, the D pin of the 3rd IGBTV3, the negative pole of the 8th diode D8 connects, the negative pole of the 9th diode meets GND, the D termination VCC24 of the one IGBTV1, the positive pole of S termination the 6th diode D6 of IGBTV2, one end of 11 electric capacity C11 and the D end of the 2nd IGBTV2, the negative pole of the 7th diode D7, the positive pole of S termination the 7th diode D7 of IGBTV2, the positive pole of the 9th diode D9, one end of 4th resistance R4, 4th IGBTV4s end connects, another termination GND of 4th resistance R4, the PWM2 that single-chip microcomputer produces is input to 2 pins of the 3rd driving chip U3, one end of the 6th resistance R6 is connected on 4 pins of the 3rd driving chip U3, another termination PWM2, 1 pin of the 3rd driving chip U3 is connected with the positive pole of the tenth diode D10 and one end of the 11 electric capacity C11 and meets VCC5, another termination GND of 11 electric capacity C11, 8 pins of the 3rd driving chip U3 and one end of the 12 electric capacity C12, the negative pole of the tenth diode D10 connects, 6 pins of the 3rd driving chip U3 are connected with the other end of the 12 electric capacity C12, 7 pins of the 3rd driving chip U3 connect one end of the 7th resistance R7, the other end of the 7th resistance R7 is held with the G of the 3rd IGBTV3 and is connected, 5 pins of four-wheel drive chip U4 are connected with one end of the 5th resistance R5, the other end of the 5th resistance R5 is held with the G of the 4th IGBTV4 and is connected, the S end of the 3rd IGBTV3 and the positive pole of the 8th diode D8, the D end of the 4th IGBTV4, the negative pole of the 9th diode D9 is connected with one end of inductance L 1, the other end of one end of the 11 electric capacity C11 is connected with the other end of inductance L 1 and as VOUT,
Voltage detecting circuit, comprises the 8th resistance R8, the 9th resistance R9, the 11 diode D11, the 13 electric capacity C13 and the 14 electric capacity C14;
One end of the 8th resistance R8 is connected to after being exported by the voltage VOUT node of high-frequency inverter circuit, the 8th resistance R8 other end is connected with the positive pole of the 11 diode D11, one end of the 9th resistance R9, the other end ground connection of the 9th resistance R9, one end of the 13 electric capacity C13 is connected with one end of the 14 electric capacity C14, the negative pole of the 11 diode D11 and meets detection node V_CK; The other end of the 13 electric capacity C13 and another termination GND of the 14 electric capacity C14;
Current detection circuit, comprises the tenth resistance R10, the 11 resistance R11, the 12 resistance R12, the 15 electric capacity C15, the 16 electric capacity R16, the 17 electric capacity R17, the 12 diode D12, operational amplifier LM358.
Electric current input node C_I is connected to the positive pole of the 12 diode D12 after the 12 resistance R12, the negative pole of the 12 diode D12 and one end of the 16 electric capacity C16, one end of 17 electric capacity R17, the positive input of operational amplifier LM358 connects, the other end of the 16 electric capacity C16 is connected with the other end of the 17 electric capacity R17 and meets GND, the inverting input of operational amplifier LM358 and one end of the tenth resistance R10, one end of 11 resistance R11, one end of 15 electric capacity C15 connects, the output of operational amplifier LM358 and the other end of the tenth resistance R10, the other end of the 15 electric capacity C15 connects and as current detecting output node C_O, another termination GND of 11 resistance R11, the positive supply termination GND of the negative supply termination VCC of operational amplifier LM358, operational amplifier LM358,
The regulator rectifier circuit of receiver module, comprises coil, the 18 electric capacity C18, the 19 electric capacity C19, the 20 electric capacity C20, the 21 electric capacity C21, the 13 diode D13, the 14 diode D14, the 15 diode D15, the 16 diode D16, the 17 diode D17, the 13 resistance R13, the 14 resistance R14, the 15 resistance R15, potentiometer P1, the second inductance L 2, the 4th voltage stabilizing chip U4 and lead-out terminal P2; The model of the 4th voltage stabilizing chip U4 is LM2596
One end of 18 electric capacity C18 and one end of coil, the positive pole of the 13 diode D13, the negative pole of the 15 diode D15 connects, the other end of the 18 electric capacity C18 and the other end of coil, the positive pole of the 14 diode D14, the negative pole of the 16 diode D16 connects, the negative pole of the 14 diode D14 and the negative pole of the 13 diode D13, 1 pin of the 4th voltage stabilizing chip U4, the positive pole of the 19 electric capacity C19 connects, the positive pole of the 16 diode D16 and the positive pole of the 15 diode D15, the negative pole of the 19 electric capacity C19, 5 pin of the 4th voltage stabilizing chip U4, 3 pin of the 4th voltage stabilizing chip U4, 17 diode D17 positive pole, the negative pole of the 20 electric capacity C20, the negative pole of the 21 electric capacity C21, one end of 14 resistance R14, 1 pin of lead-out terminal P2 connects and meets GND, 2 pin of the 4th voltage stabilizing chip U4 are connected with the 17 diode D17 negative pole, one end of the 13 resistance R13, one end of the second inductance L 2,2 pin of the other end of the second inductance L 2 and the positive pole of the 21 electric capacity C21, lead-out terminal P2,2 pin of potentiometer P1,3 pin of potentiometer P1 are connected, 4 pin of the 4th voltage stabilizing chip U4 are connected with one end of the 15 resistance R15, and the other end of the 15 resistance R15 is connected with the other end of the 14 resistance R14,1 pin of potentiometer P1, the other end of the 13 resistance R13 is connected with the positive pole of the 20 electric capacity C20,
Charge management circuit, comprises input terminal P3, the 22 electric capacity C22, the 23 electric capacity C23, the 16 resistance R16, the 17 resistance R17, the 18 resistance R18, the first light-emitting diode D18, the second light-emitting diode D19, charging management chip U5, a battery simulation terminal P4; The model of charging management chip U5 is cn3083;
The positive pole of described voltage input-terminal P3 is connected with one end of the 22 electric capacity C22, one end of the 16 resistance R16,4 pin of charging management chip U5, and the negative pole of voltage input-terminal P3 is connected with the other end of the 22 electric capacity C22 and meets GND; The other end of the 16 resistance R16 is connected with the positive pole of the positive pole of the first light-emitting diode D18, the second light-emitting diode D19, the negative pole of the first light-emitting diode D18 is connected with 6 pin of charging management chip U5, and the negative pole of the second light-emitting diode D19 is connected with 7 pin of charging management chip U5; The 3 pin ground connection of charging management chip U5,2 pin are connected with one end of the 18 resistance R18, the negative pole of terminal P4 simulated by one end, the battery of 1 pin and the 17 resistance R17, one end of the 23 electric capacity C23 is connected and ground connection, and the positive pole of terminal P4 simulated by the other end of 5 pin and the 23 electric capacity C23, battery, 8 pin of charging management chip U5, the other end of the 17 resistance R17 are connected; The other end ground connection of the 18 resistance R18.
Beneficial effect of the present invention: the present invention takes into full account efficiency and the fail safe of wireless charging, at sending module design testing circuit, when the voltage detected diminishes, single-chip microcomputer just suitably increases the PWM frequency of output to ensure operating efficiency, and when the electric current detected is less than certain value, single-chip microcomputer just stops exporting PWM to avoid energy loss and guarantee fail safe; Receiver module of the present invention takes into full account the electric current that mobile phone charges and voltage swing, and the circuit of design has good stability, advantage that reliability is high.
Accompanying drawing explanation
Fig. 1 is the regulator rectifier circuit of sending module;
Fig. 2 is high-frequency inverter circuit;
Fig. 3 voltage detecting circuit;
Fig. 4 is current detection circuit;
Fig. 5 is the regulator rectifier circuit of receiver module;
Fig. 6 is charge management circuit.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
A kind of mobile phone wireless charging circuit, comprise wireless transmission and receive two large modules, and wireless sending module comprises Transformer Rectifier voltage stabilizing circuit, high-frequency inverter circuit, voltage detecting circuit, current detection circuit, receiver module comprises regulator rectifier circuit, charge management circuit two parts.
As shown in Figure 1, Transformer Rectifier voltage stabilizing circuit, comprises transformer T1, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the 5th electric capacity C5, the 6th electric capacity C6, the first diode D1, the second diode D2, the 3rd diode D3, a 4th diode D4 and voltage stabilizing chip LM7824;
First electric capacity C1 is connected in parallel on transformer T1 two ends; The positive pole of the first diode D1 is connected on one end of the first electric capacity C1, and negative pole is connected with the negative pole of the second diode D2; The positive pole of the second diode D2 is connected on the other end of the first electric capacity C1, and negative pole is connected with the VIN pin of voltage stabilizing chip LM7824; The positive pole of the 3rd diode D3, the positive pole of the 4th diode D4 meet GND, and the negative pole of the 3rd diode D3 is connected with the positive pole of the first diode D1, and the negative pole of the 4th diode D4 is connected with the positive pole of the second diode D2; The positive pole of the second electric capacity C2 is connected with the VIN pin of voltage stabilizing chip LM7824, and negative pole meets GND, and the 3rd electric capacity C3 is connected in parallel on VIN and the GND two ends of voltage stabilizing chip LM7824, and the 4th, six electric capacity C4, C6 are connected in parallel between VOUT and GND of voltage stabilizing chip LM7824; 5th electric capacity C5 is connected in parallel on VOUT pin and the GND two ends of voltage stabilizing chip LM7824, and the GND pin of voltage stabilizing chip LM7824 meets GND; The VOUT pin of voltage stabilizing chip LM7824 is as 24V voltage output end;
As shown in Figure 2, high-frequency inverter circuit comprises the 7th electric capacity C7, 8th electric capacity C8, 9th electric capacity C9, tenth electric capacity C10, 11 electric capacity C11, 12 electric capacity C12, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, second driving chip U2, 3rd driving chip U3, 5th diode D5, 6th diode D6, 7th diode D7, 8th diode D8, 9th diode D9, tenth diode D10, one IGBTV1, 2nd IGBTV2, 3rd IGBTV3, 4th IGBTV4, first inductance L 1, second driving chip U2 and the 3rd driving chip U3, the model of the second driving chip U2 is IR2302, the model of the 3rd driving chip U3 is IR2302,
The PWM1 that single-chip microcomputer produces is input to 2 pins of the second driving chip U2, 4 pins that one end of the first resistance R1 is connected on the second driving chip connect and meet GND, another termination PWM1, 1 pin of the second driving chip is connected with one end of the positive pole of the 5th diode D5 and the 7th electric capacity C7 and meets VCC, another termination GND of 7th electric capacity C7, 8 pins and the one end with the 8th electric capacity C8 of second driving chip, the negative pole of the 5th diode D5 connects, 6 pins of the second driving chip are connected with the other end of the 8th electric capacity C8, 7 pins of the second driving chip are connected with one end of the second resistance R2, the other end of the second resistance R2 is held with the G of IGBTV1 and is connected, 5 pins of the second driving chip are connected with one end of the 3rd resistance R3, the other end of the 3rd resistance R3 is held with the G of the 2nd IGBTV2 and is connected, the one termination GND of the tenth electric capacity C10, the positive pole of the other end and the 9th electric capacity C9, the negative pole of the 6th diode D6, the D pin of the 3rd IGBTV3, the negative pole of the 8th diode D8 connects, the negative pole of the 9th diode meets GND, the D termination VCC24 of the one IGBTV1, the positive pole of S termination the 6th diode D6 of IGBTV2, one end of 11 electric capacity C11 and the D end of the 2nd IGBTV2, the negative pole of the 7th diode D7, the positive pole of S termination the 7th diode D7 of IGBTV2, the positive pole of the 9th diode D9, one end of 4th resistance R4, 4th IGBTV4s end connects, another termination GND of 4th resistance R4, the PWM2 that single-chip microcomputer produces is input to 2 pins of the 3rd driving chip U3, one end of the 6th resistance R6 is connected on 4 pins of the 3rd driving chip U3, another termination PWM2, 1 pin of the 3rd driving chip U3 is connected with the positive pole of the tenth diode D10 and one end of the 11 electric capacity C11 and meets VCC5, another termination GND of 11 electric capacity C11, 8 pins of the 3rd driving chip U3 and one end of the 12 electric capacity C12, the negative pole of the tenth diode D10 connects, 6 pins of the 3rd driving chip U3 are connected with the other end of the 12 electric capacity C12, 7 pins of the 3rd driving chip U3 connect one end of the 7th resistance R7, the other end of the 7th resistance R7 is held with the G of the 3rd IGBTV3 and is connected, 5 pins of four-wheel drive chip U4 are connected with one end of the 5th resistance R5, the other end of the 5th resistance R5 is held with the G of the 4th IGBTV4 and is connected, the S end of the 3rd IGBTV3 and the positive pole of the 8th diode D8, the D end of the 4th IGBTV4, the negative pole of the 9th diode D9 is connected with one end of inductance L 1, the other end of one end of the 11 electric capacity C11 is connected with the other end of inductance L 1 and as VOUT,
The voltage of VOUT enters V_CK microprocessor detect voltage swing after divider filter.The frequency of PWM1 and PWM2 is improved to keep high efficiency of transmission when the voltage detected is less than certain value.
As shown in Figure 3, voltage detecting circuit, comprises the 8th resistance R8, the 9th resistance R9, the 11 diode D11, the 13 electric capacity C13 and the 14 electric capacity C14;
One end of the 8th resistance R8 is connected to after being exported by the voltage VOUT node of high-frequency inverter circuit, the 8th resistance R8 other end is connected with the positive pole of the 11 diode D11, one end of the 9th resistance R9, the other end ground connection of the 9th resistance R9, one end of the 13 electric capacity C13 is connected with one end of the 14 electric capacity C14, the negative pole of the 11 diode D11 and meets detection node V_CK; The other end of the 13 electric capacity C13 and another termination GND of the 14 electric capacity C14;
The electric current of magnetic induction coil enters this current detection circuit through node C_I, and the AD that C_O node connects into single-chip microcomputer gathers port.When sending module zero load (receiver module coil is away from sending module), the value of the very little C_O when the coil of receiver module is near sending module coil of value of C_O increases, and just knows by detecting C_O the size whether having energy transferring and energy transferring.When not having the value of energy transferring or C_O excessive, single-chip microcomputer stops producing PWM1 and PWM2 then sending module stopping transmission electric energy.
As shown in Figure 4, current detection circuit, comprises the tenth resistance R10, the 11 resistance R11, the 12 resistance R12, the 15 electric capacity C15, the 16 electric capacity R16, the 17 electric capacity R17, the 12 diode D12, operational amplifier LM358.
Electric current input node C_I is connected to the positive pole of the 12 diode D12 after the 12 resistance R12, the negative pole of the 12 diode D12 and one end of the 16 electric capacity C16, one end of 17 electric capacity R17, the positive input of operational amplifier LM358 connects, the other end of the 16 electric capacity C16 is connected with the other end of the 17 electric capacity R17 and meets GND, the inverting input of operational amplifier LM358 and one end of the tenth resistance R10, one end of 11 resistance R11, one end of 15 electric capacity C15 connects, the output of operational amplifier LM358 and the other end of the tenth resistance R10, the other end of the 15 electric capacity C15 connects and as current detecting output node C_O, another termination GND of 11 resistance R11, the positive supply termination GND of the negative supply termination VCC of operational amplifier LM358, operational amplifier LM358,
Respond to by coil electromagnetism the alternating current obtained and become direct current after rectifier bridge, enter BUCK voltage stabilizing chip LM2596, the voltage (0-5V) of output P6 can be changed and voltage regulation result is better by regulator potentiometer P1, can as the input of charging management chip.
As shown in Figure 5, the regulator rectifier circuit of receiver module, comprises coil, the 18 electric capacity C18, the 19 electric capacity C19, the 20 electric capacity C20, the 21 electric capacity C21, the 13 diode D13, the 14 diode D14, the 15 diode D15, the 16 diode D16, the 17 diode D17, the 13 resistance R13, the 14 resistance R14, the 15 resistance R15, potentiometer P1, the second inductance L 2, the 4th voltage stabilizing chip U4 and lead-out terminal P2; The model of the 4th voltage stabilizing chip U4 is LM2596
One end of 18 electric capacity C18 and one end of coil, the positive pole of the 13 diode D13, the negative pole of the 15 diode D15 connects, the other end of the 18 electric capacity C18 and the other end of coil, the positive pole of the 14 diode D14, the negative pole of the 16 diode D16 connects, the negative pole of the 14 diode D14 and the negative pole of the 13 diode D13, 1 pin of the 4th voltage stabilizing chip U4, the positive pole of the 19 electric capacity C19 connects, the positive pole of the 16 diode D16 and the positive pole of the 15 diode D15, the negative pole of the 19 electric capacity C19, 5 pin of the 4th voltage stabilizing chip U4, 3 pin of the 4th voltage stabilizing chip U4, 17 diode D17 positive pole, the negative pole of the 20 electric capacity C20, the negative pole of the 21 electric capacity C21, one end of 14 resistance R14, 1 pin of lead-out terminal P2 connects and meets GND, 2 pin of the 4th voltage stabilizing chip U4 are connected with the 17 diode D17 negative pole, one end of the 13 resistance R13, one end of the second inductance L 2,2 pin of the other end of the second inductance L 2 and the positive pole of the 21 electric capacity C21, lead-out terminal P2,2 pin of potentiometer P1,3 pin of potentiometer P1 are connected, 4 pin of the 4th voltage stabilizing chip U4 are connected with one end of the 15 resistance R15, and the other end of the 15 resistance R15 is connected with the other end of the 14 resistance R14,1 pin of potentiometer P1, the other end of the 13 resistance R13 is connected with the positive pole of the 20 electric capacity C20,
Using the input of the output voltage of receiver module as this part circuit, with integrated charging management chip cn3083.Apply this chip and only need few peripheral component and it can adjust charging current automatically according to the current output capability of input voltage source, chip can be stablized and exports 4.2V voltage and can ensure not damage battery of mobile phone, and chip has the too low latch of input voltage and cell-temperature monitoring and charging (red LED is bright) state, end (green LED is bright) indicates.
As shown in Figure 6, charge management circuit, comprises input terminal P3, the 22 electric capacity C22, the 23 electric capacity C23, the 16 resistance R16, the 17 resistance R17, the 18 resistance R18, the first light-emitting diode D18, the second light-emitting diode D19, charging management chip U5, a battery simulation terminal P4; The model of charging management chip U5 is cn3083;
The positive pole of described voltage input-terminal P3 is connected with one end of the 22 electric capacity C22, one end of the 16 resistance R16,4 pin of charging management chip U5, and the negative pole of voltage input-terminal P3 is connected with the other end of the 22 electric capacity C22 and meets GND; The other end of the 16 resistance R16 is connected with the positive pole of the positive pole of the first light-emitting diode D18, the second light-emitting diode D19, the negative pole of the first light-emitting diode D18 is connected with 6 pin of charging management chip U5, and the negative pole of the second light-emitting diode D19 is connected with 7 pin of charging management chip U5; The 3 pin ground connection of charging management chip U5,2 pin are connected with one end of the 18 resistance R18, the negative pole of terminal P4 simulated by one end, the battery of 1 pin and the 17 resistance R17, one end of the 23 electric capacity C23 is connected and ground connection, and the positive pole of terminal P4 simulated by the other end of 5 pin and the 23 electric capacity C23, battery, 8 pin of charging management chip U5, the other end of the 17 resistance R17 are connected; The other end ground connection of the 18 resistance R18.
The civil power of the course of work: 220V reduces to 24V after transformer, then becomes direct current after rectifying and wave-filtering, with voltage stabilizing chip LM7824 by voltage stabilization at 24V; Produce PWM1 and PWM2 by single-chip microcomputer to input the break-make that two driving chip IR2302 control four IGBT respectively and carry out full-bridge inverting, produce high-frequency signal, high-frequency signal is connected to wireless coil by VOUT, produces magnetic field; The voltage of VOUT enters V_CK microprocessor detect voltage swing after divider filter; The frequency of PWM1 and PWM2 is improved to keep high efficiency of transmission when the voltage detected is less than certain value; The electric current of magnetic induction coil enters this current detection circuit through node C_I, and the AD that C_O node connects into single-chip microcomputer gathers port.When sending module zero load (receiver module coil is away from sending module), the value of the very little C_O when the coil of receiver module is near sending module coil of value of C_O increases, and just knows by detecting C_O the size whether having energy transferring and energy transferring.When not having the value of energy transferring or C_O excessive, single-chip microcomputer stops producing PWM1 and PWM2 then sending module stopping transmission electric energy; Respond to by coil electromagnetism the alternating current obtained and become direct current after rectifier bridge, enter BUCK voltage stabilizing chip LM2596, the voltage (0-5V) of output P6 can be changed and voltage regulation result is better by regulator potentiometer P1, can as the input of charging management chip; Using the input of the output voltage of receiver module as this part circuit, with integrated charging management chip cn3083.Apply this chip and only need few peripheral component and it can adjust charging current automatically according to the current output capability of input voltage source, chip can be stablized and exports 4.2V voltage and can ensure not damage battery of mobile phone, and chip has the too low latch of input voltage and cell-temperature monitoring and charging (red LED is bright) state, end (green LED is bright) indicates.
Claims (1)
1. a mobile phone wireless charging circuit, it is characterized in that: comprise wireless transmission and receive two large modules, and wireless sending module comprises Transformer Rectifier voltage stabilizing circuit, high-frequency inverter circuit, voltage detecting circuit, current detection circuit, receiver module comprises regulator rectifier circuit, charge management circuit two parts;
Wherein Transformer Rectifier voltage stabilizing circuit, comprises transformer T1, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the 5th electric capacity C5, the 6th electric capacity C6, the first diode D1, the second diode D2, the 3rd diode D3, a 4th diode D4 and voltage stabilizing chip LM7824;
First electric capacity C1 is connected in parallel on transformer T1 two ends; The positive pole of the first diode D1 is connected on one end of the first electric capacity C1, and negative pole is connected with the negative pole of the second diode D2; The positive pole of the second diode D2 is connected on the other end of the first electric capacity C1, and negative pole is connected with the VIN pin of voltage stabilizing chip LM7824; The positive pole of the 3rd diode D3, the positive pole of the 4th diode D4 meet GND, and the negative pole of the 3rd diode D3 is connected with the positive pole of the first diode D1, and the negative pole of the 4th diode D4 is connected with the positive pole of the second diode D2; The positive pole of the second electric capacity C2 is connected with the VIN pin of voltage stabilizing chip LM7824, and negative pole meets GND, and the 3rd electric capacity C3 is connected in parallel on VIN and the GND two ends of voltage stabilizing chip LM7824, and the 4th, six electric capacity C4, C6 are connected in parallel between VOUT and GND of voltage stabilizing chip LM7824; 5th electric capacity C5 is connected in parallel on VOUT pin and the GND two ends of voltage stabilizing chip LM7824, and the GND pin of voltage stabilizing chip LM7824 meets GND; The VOUT pin of voltage stabilizing chip LM7824 is as 24V voltage output end;
High-frequency inverter circuit comprises the 7th electric capacity C7, 8th electric capacity C8, 9th electric capacity C9, tenth electric capacity C10, 11 electric capacity C11, 12 electric capacity C12, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, second driving chip U2, 3rd driving chip U3, 5th diode D5, 6th diode D6, 7th diode D7, 8th diode D8, 9th diode D9, tenth diode D10, one IGBTV1, 2nd IGBTV2, 3rd IGBTV3, 4th IGBTV4, first inductance L 1, second driving chip U2 and the 3rd driving chip U3, the model of the second driving chip U2 is IR2302, the model of the 3rd driving chip U3 is IR2302,
The PWM1 that single-chip microcomputer produces is input to 2 pins of the second driving chip U2, 4 pins that one end of the first resistance R1 is connected on the second driving chip connect and meet GND, another termination PWM1, 1 pin of the second driving chip is connected with one end of the positive pole of the 5th diode D5 and the 7th electric capacity C7 and meets VCC, another termination GND of 7th electric capacity C7, 8 pins of the second driving chip and one end of the 8th electric capacity C8, the negative pole of the 5th diode D5 connects, 6 pins of the second driving chip are connected with the other end of the 8th electric capacity C8, 7 pins of the second driving chip are connected with one end of the second resistance R2, the other end of the second resistance R2 is held with the G of IGBTV1 and is connected, 5 pins of the second driving chip are connected with one end of the 3rd resistance R3, the other end of the 3rd resistance R3 is held with the G of the 2nd IGBTV2 and is connected, the one termination GND of the tenth electric capacity C10, the positive pole of the other end and the 9th electric capacity C9, the negative pole of the 6th diode D6, the D pin of the 3rd IGBTV3, the negative pole of the 8th diode D8 connects, the negative pole of the 9th diode meets GND, the D termination VCC24 of the one IGBTV1, the positive pole of S termination the 6th diode D6 of IGBTV2, one end of 11 electric capacity C11 and the D end of the 2nd IGBTV2, the negative pole of the 7th diode D7, the positive pole of S termination the 7th diode D7 of IGBTV2, the positive pole of the 9th diode D9, one end of 4th resistance R4, 4th IGBTV4s end connects, another termination GND of 4th resistance R4, the PWM2 that single-chip microcomputer produces is input to 2 pins of the 3rd driving chip U3, one end of the 6th resistance R6 is connected on 4 pins of the 3rd driving chip U3, another termination PWM2, 1 pin of the 3rd driving chip U3 is connected with the positive pole of the tenth diode D10 and one end of the 11 electric capacity C11 and meets VCC5, another termination GND of 11 electric capacity C11, 8 pins of the 3rd driving chip U3 and one end of the 12 electric capacity C12, the negative pole of the tenth diode D10 connects, 6 pins of the 3rd driving chip U3 are connected with the other end of the 12 electric capacity C12, 7 pins of the 3rd driving chip U3 connect one end of the 7th resistance R7, the other end of the 7th resistance R7 is held with the G of the 3rd IGBTV3 and is connected, 5 pins of four-wheel drive chip U4 are connected with one end of the 5th resistance R5, the other end of the 5th resistance R5 is held with the G of the 4th IGBTV4 and is connected, the S end of the 3rd IGBTV3 and the positive pole of the 8th diode D8, the D end of the 4th IGBTV4, the negative pole of the 9th diode D9 is connected with one end of inductance L 1, the other end of one end of the 11 electric capacity C11 is connected with the other end of inductance L 1 and as VOUT,
Voltage detecting circuit, comprises the 8th resistance R8, the 9th resistance R9, the 11 diode D11, the 13 electric capacity C13 and the 14 electric capacity C14;
One end of the 8th resistance R8 is connected to after being exported by the voltage VOUT node of high-frequency inverter circuit, the 8th resistance R8 other end is connected with the positive pole of the 11 diode D11, one end of the 9th resistance R9, the other end ground connection of the 9th resistance R9, one end of the 13 electric capacity C13 is connected with one end of the 14 electric capacity C14, the negative pole of the 11 diode D11 and meets detection node V_CK; The other end of the 13 electric capacity C13 and another termination GND of the 14 electric capacity C14;
Current detection circuit, comprises the tenth resistance R10, the 11 resistance R11, the 12 resistance R12, the 15 electric capacity C15, the 16 electric capacity R16, the 17 electric capacity R17, the 12 diode D12, operational amplifier LM358;
Electric current input node C_I is connected to the positive pole of the 12 diode D12 after the 12 resistance R12, the negative pole of the 12 diode D12 and one end of the 16 electric capacity C16, one end of 17 electric capacity R17, the positive input of operational amplifier LM358 connects, the other end of the 16 electric capacity C16 is connected with the other end of the 17 electric capacity R17 and meets GND, the inverting input of operational amplifier LM358 and one end of the tenth resistance R10, one end of 11 resistance R11, one end of 15 electric capacity C15 connects, the output of operational amplifier LM358 and the other end of the tenth resistance R10, the other end of the 15 electric capacity C15 connects and as current detecting output node C_O, another termination GND of 11 resistance R11, the positive supply termination GND of the negative supply termination VCC of operational amplifier LM358, operational amplifier LM358,
The regulator rectifier circuit of receiver module, comprises coil, the 18 electric capacity C18, the 19 electric capacity C19, the 20 electric capacity C20, the 21 electric capacity C21, the 13 diode D13, the 14 diode D14, the 15 diode D15, the 16 diode D16, the 17 diode D17, the 13 resistance R13, the 14 resistance R14, the 15 resistance R15, potentiometer P1, the second inductance L 2, the 4th voltage stabilizing chip U4 and lead-out terminal P2; The model of the 4th voltage stabilizing chip U4 is LM2596;
One end of 18 electric capacity C18 and one end of coil, the positive pole of the 13 diode D13, the negative pole of the 15 diode D15 connects, the other end of the 18 electric capacity C18 and the other end of coil, the positive pole of the 14 diode D14, the negative pole of the 16 diode D16 connects, the negative pole of the 14 diode D14 and the negative pole of the 13 diode D13, 1 pin of the 4th voltage stabilizing chip U4, the positive pole of the 19 electric capacity C19 connects, the positive pole of the 16 diode D16 and the positive pole of the 15 diode D15, the negative pole of the 19 electric capacity C19, 5 pin of the 4th voltage stabilizing chip U4, 3 pin of the 4th voltage stabilizing chip U4, 17 diode D17 positive pole, the negative pole of the 20 electric capacity C20, the negative pole of the 21 electric capacity C21, one end of 14 resistance R14, 1 pin of lead-out terminal P2 connects and meets GND, 2 pin of the 4th voltage stabilizing chip U4 are connected with the 17 diode D17 negative pole, one end of the 13 resistance R13, one end of the second inductance L 2,2 pin of the other end of the second inductance L 2 and the positive pole of the 21 electric capacity C21, lead-out terminal P2,2 pin of potentiometer P1,3 pin of potentiometer P1 are connected, 4 pin of the 4th voltage stabilizing chip U4 are connected with one end of the 15 resistance R15, and the other end of the 15 resistance R15 is connected with the other end of the 14 resistance R14,1 pin of potentiometer P1, the other end of the 13 resistance R13 is connected with the positive pole of the 20 electric capacity C20,
Charge management circuit, comprises input terminal P3, the 22 electric capacity C22, the 23 electric capacity C23, the 16 resistance R16, the 17 resistance R17, the 18 resistance R18, the first light-emitting diode D18, the second light-emitting diode D19, charging management chip U5, a battery simulation terminal P4; The model of charging management chip U5 is cn3083;
The positive pole of described voltage input-terminal P3 is connected with one end of the 22 electric capacity C22, one end of the 16 resistance R16,4 pin of charging management chip U5, and the negative pole of voltage input-terminal P3 is connected with the other end of the 22 electric capacity C22 and meets GND; The other end of the 16 resistance R16 is connected with the positive pole of the positive pole of the first light-emitting diode D18, the second light-emitting diode D19, the negative pole of the first light-emitting diode D18 is connected with 6 pin of charging management chip U5, and the negative pole of the second light-emitting diode D19 is connected with 7 pin of charging management chip U5; The 3 pin ground connection of charging management chip U5,2 pin are connected with one end of the 18 resistance R18, the negative pole of terminal P4 simulated by one end, the battery of 1 pin and the 17 resistance R17, one end of the 23 electric capacity C23 is connected and ground connection, and the positive pole of terminal P4 simulated by the other end of 5 pin and the 23 electric capacity C23, battery, 8 pin of charging management chip U5, the other end of the 17 resistance R17 are connected; The other end ground connection of the 18 resistance R18.
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| CN201610012506.3A CN105490360A (en) | 2016-01-07 | 2016-01-07 | Mobile phone wireless charging circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610012506.3A CN105490360A (en) | 2016-01-07 | 2016-01-07 | Mobile phone wireless charging circuit |
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| CN105490360A true CN105490360A (en) | 2016-04-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107086646A (en) * | 2017-05-25 | 2017-08-22 | 安徽师范大学 | A kind of distributed wireless charging equipment for mobile phone and its charging method |
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| CN108683270A (en) * | 2018-06-08 | 2018-10-19 | 深圳市汇森无线传输有限公司 | A kind of wireless charging system |
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| CN109787312A (en) * | 2019-01-29 | 2019-05-21 | 南京师范大学 | A kind of high frequency invariable power wireless charging module based on PWM wave |
| CN112168079A (en) * | 2020-10-20 | 2021-01-05 | 深圳市云鼠科技开发有限公司 | High-stability charging circuit of sweeper |
| CN112168079B (en) * | 2020-10-20 | 2021-08-10 | 深圳市云鼠科技开发有限公司 | High-stability charging circuit of sweeper |
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