CN204947628U - There is the charger of multiple USB output port - Google Patents
There is the charger of multiple USB output port Download PDFInfo
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- CN204947628U CN204947628U CN201520504966.9U CN201520504966U CN204947628U CN 204947628 U CN204947628 U CN 204947628U CN 201520504966 U CN201520504966 U CN 201520504966U CN 204947628 U CN204947628 U CN 204947628U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The utility model discloses a kind of charger with multiple USB output port, comprise filter circuit, pfc circuit, LLC resonant circuit, second synchronization rectification circuit and USB output module, input electrical signal is carried out filtering by filter circuit, after rectification, export to pfc circuit, after the signal of telecommunication that filter circuit inputs by pfc circuit carries out power factor correction, export to LLC resonant circuit, after the signal of telecommunication of LLC resonant circuit to input carries out harmonic conversion, export to second synchronization rectification circuit, USB output module is exported to through output port after the signal of telecommunication of described second synchronization rectification circuit to input carries out synchronous rectification.Filter circuit can electrical network to the EMI electromagnetic interference of charger, pfc circuit can improve the utilance of power supply, LLC resonant circuit can reduce the energy consumption of circuit breaker in middle, second synchronization rectification circuit can carry out secondary rectification to circuit, USB output module can provide the port of multiple different model, the demand that the charging device that can meet multiple different model charges simultaneously.
Description
Technical field
The utility model relates to a kind of charger with multiple USB output port.
Background technology
Existing charger USB port only has 1 to 2; but; in daily life; we often can run into the situation having multiple digital mobile device on hand simultaneously and need charging; in view of existing charger USB port only has 1 to 2; and output type is comparatively single; and the charge parameter of multiple different size model may be there is in multiple mobile digital equipment; the situation that the charger that result in these mobile digital equipment can not share, brings to our daily life and office needs and greatly bothers.
Utility model content
The utility model provides a kind of charger with multiple USB output port, at least one to solve the problem.
According to an aspect of the present utility model, provide a kind of charger with multiple USB output port, comprise filter circuit, pfc circuit, LLC resonant circuit, second synchronization rectification circuit and USB output module, input electrical signal is carried out filtering by filter circuit, after rectification, export to pfc circuit, after the signal of telecommunication that filter circuit inputs by pfc circuit carries out power factor correction, export to LLC resonant circuit, after the signal of telecommunication of LLC resonant circuit to input carries out harmonic conversion, export to second synchronization rectification circuit, USB output module is exported to through output port after the signal of telecommunication of described second synchronization rectification circuit to input carries out synchronous rectification.
Filter circuit of the present utility model can electrical network to the EMI electromagnetic interference of charger, pfc circuit can improve the utilance of power supply, LLC resonant circuit can reduce the energy consumption of circuit breaker in middle, thus improve the conversion efficiency of power supply, second synchronization rectification circuit can carry out secondary rectification to circuit, improve the transfer ratio of power supply, USB output module can provide the port of multiple different model, the demand that the charging device that can meet multiple different model charges simultaneously.
In some embodiments, also comprise photoelectric coupling control loop, the signal of telecommunication of described second synchronization rectification circuit is fed back to described LLC resonant circuit by photoelectric coupling control loop.Thus, the signal of telecommunication of second synchronization rectification circuit can be fed back to LLC resonant circuit by photoelectric coupling loop.
In some embodiments, USB output module comprises multiple output port, and multiple output port will export after being input to the shunting of the USB output module signal of telecommunication.Thus, multiple output port can provide the port of different model to charge to charging respectively simultaneously.
In some embodiments, filter circuit comprises filtering electronic circuit and commutation sub-circuit, the signal of telecommunication of input filter circuit, carries out after filtering through filtering electronic circuit, and flow into commutation sub-circuit, commutation sub-circuit exports after the signal of telecommunication rectification of inflow.Thus, filtering electronic circuit can prevent electrical network to the EMI electromagnetic interference of product, and the alternating current that commutation sub-circuit can input converts direct current to,
In some embodiments, pfc circuit comprises control chip U1, energy storage inductor L2, switching tube Q1, rectifying tube D3, inductance THR1 and electrochemical capacitor EC1, control chip U1 output pulse signal is to switching tube Q1, by electrical power storage in energy storage inductor L2, the Pulse Electric that control chip U1 exports, after rectifying tube D3 rectification, is stored in electrochemical capacitor EC1.
In some embodiments, LLC resonant circuit comprises control chip U2, upper switching circuitry, lower switching circuitry and LLC harmonic oscillator circuit, control chip U2 exports control signal to upper switching circuitry, the break-make of switching circuitry in control, control chip U2 exports control signal to lower switching circuitry, control the break-make of lower switching circuitry, LLC harmonic oscillator circuit converts the signal of telecommunication of input to sine wave signal.
In some embodiments, second synchronization rectification circuit comprises transformer T1, rectify control chip U5, switching tube Q5, rectify control chip U6, switching tube Q6, electrochemical capacitor EC9, electrochemical capacitor EC10, electrochemical capacitor EC11, after rectify control chip U5 detects the signal of telecommunication of transformer T1 primary side, export control signal to switching tube Q5, the break-make of control switch pipe Q5, after rectify control chip U6 detects the signal of telecommunication of transformer T1 primary side, export control signal to switching tube Q6, the break-make of control switch pipe Q6.
In some embodiments, photoelectric coupling loop comprises resistance R59, resistance R61, transistor U3, light-emitting diode U4, resistance R64, resistance R65, resistance R26, resistance R64, resistance R65, resistance R63 are respectively after output sampling, the signal of telecommunication is fed back to the control pin of transistor U3, U3 exports the brightness that the signal of telecommunication controls light-emitting diode U4, the signal of telecommunication is fed back to control chip U2 by U4, after U2 receiving feedback signals, export control signal to transformer T1, the Energy transmission of control transformer T1.
Accompanying drawing explanation
Fig. 1 is the charger with multiple USB output port of a kind of execution mode of the utility model
Structural representation;
Fig. 2 is for having the charger circuit principle schematic of multiple USB output port shown in Fig. 1;
Fig. 3 is for having the filter circuit principle schematic of the charger of multiple USB output port shown in Fig. 1;
Fig. 4 is for having the principle schematic of the pfc circuit of the charger of multiple USB output port shown in Fig. 1;
Fig. 5 is for having the circuit theory schematic diagram of the LLC resonant circuit of the charger of multiple USB output port shown in Fig. 1;
Fig. 6 is for having the circuit theory schematic diagram of the second synchronization rectification circuit of the charger of multiple USB output port shown in Fig. 1;
Fig. 7 is for having the circuit theory schematic diagram of the photoelectric coupling control loop of the charger of multiple USB output port shown in Fig. 1;
Fig. 8 is for having the first port circuit theory schematic diagram of the USB output module of the charger of multiple USB output port shown in Fig. 1;
Fig. 9 is for having the second port circuit principle schematic of the USB output module of the charger of multiple USB output port shown in Fig. 1;
Figure 10 is for having the V-i Characteristics principle schematic of the USB output module of the charger of multiple USB output port shown in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 to Figure 10 show schematically show the charger according to a kind of execution mode of the present utility model with multiple USB output port.
As shown in Figure 1, there is the charger of multiple USB output port, comprise filter circuit 1, pfc circuit 2, LLC resonant circuit 3, second synchronization rectification circuit 4 and USB output module 6, photoelectric coupling control loop 5 can be comprised in addition.
Shown in composition graphs 1 and Fig. 2, input electrical signal is carried out filtering by filter circuit 1, after rectification, export to pfc circuit 2, after the signal of telecommunication that filter circuit inputs is carried out power factor correction by pfc circuit 2, export to LLC resonant circuit 3, after the signal of telecommunication of LLC resonant circuit 3 to input carries out harmonic conversion, export to second synchronization rectification circuit 4, USB output module 6 is exported to through output port after the signal of telecommunication of second synchronization rectification circuit 4 to input carries out synchronous rectification, the signal of telecommunication of second synchronization rectification circuit 4 is fed back to LLC resonant circuit 3 by photoelectric coupling control loop 5.
Shown in composition graphs 2 and Fig. 3, filter circuit 1 comprises filtering electronic circuit 11 and commutation sub-circuit 12, and filtering electronic circuit 11 comprises resistance F1, interrupteur SW, resistance TVR1, common mode inductance LF1, safety electric capacity CX1, common mode inductance LF2, safety electric capacity CX2, common mode inductance LF3, electric capacity CY1 and electric capacity CY2; Common mode inductance LF1, common mode inductance LF2, common mode inductance LF3 can suppress the high frequency common mode noise in input electrical signal, safety CX1, safety CX2 can low frequency differences mode noises in filtering input electrical signal, common mode inductance LF1, common mode inductance LF2, common mode inductance, LF3 safety CX1 and safety CX2 form two π type LC filter jointly, electrical network input electrical signal can be prevented the EMI electromagnetic interference of charger, simultaneously also can filtering charger to the EMI electromagnetic interference of electrical network.Rectifier bridge stack BD1 then forms commutation sub-circuit 12, can be direct current by AC rectification
Shown in composition graphs 2 and Fig. 4, pfc circuit comprises control chip U1, energy storage inductor L2, switching tube Q1, rectifying tube D3, inductance THR1 and electrochemical capacitor EC1 and peripheral circuit, input voltage can be stabilized in 400Vdc from 100-350Vdc boosting, make the PFC value of circuit be greater than 0.95, improve power utilization rate.3 pin of control chip U1 are by sampling the signal of telecommunication of resistance R6, resistance R5, resistance R4, resistance R3, to detect the height of input voltage and phase place, control chip U1 passes through testing result, the break-make of corresponding pwm pulse signal control switch pipe Q1 is exported from 13 pin, the electric current of input and voltage-phase are consistent, to reduce current harmonics, improve power utilization rate, PFC value can be made to reach more than 0.98, and can store energy in energy storage inductor L2; Pulse Electric can be rectified into direct current and be stored in electrochemical capacitor EC1 by rectifying tube D3; 1 pin of control chip U1 detects the height of input electrical signal voltage from HV end by resistance R24, resistance R23, resistance R22, resistance R21, resistance R20, the pwm signal form of output duty cycle is changed at 13 pin of control chip U1, the break-make of control switch pipe Q1, makes pfc circuit boost value be stabilized in 400Vdc.
Shown in composition graphs 2 and Fig. 5, LLC resonant circuit comprises control chip U2, upper switching circuitry, lower switching circuitry and LLC harmonic oscillator circuit, upper switching circuitry comprises switch Q4, resonant inductance L3, transformer T1 and resonant capacitance C24, lower switching circuitry comprises lower switch Q3, resonant inductance L3, transformer T1 and resonant capacitance C24, 3 pin of control chip U2 and the parameter of 4 pin can determine operating frequency, design is contemplated to be low-limit frequency at about 40KHZ, operating frequency is at about 70KHZ, electric capacity C18 value is 330pF, resistance R37 resistance is 24K, resistance R36 resistance is 2.7K.7 pin of control chip U2 are passed through resistance R31 by HV, resistance R30, resistance R29, the power taking of resistance R28 dividing potential drop, when HV voltage reaches 380V, 15 pin of control chip U2 and 11 pin are activated work, and export the complementary push-pull pwm signal in one group of band dead band, switch Q4 and lower switch Q3 break-make respectively in control, upper switch Q4, lower switch Q5, resonant inductance L3, transformer T1, resonant capacitance C24 forms LLC harmonic oscillator circuit, electric current and the voltage of sine wave can be produced, make switch Q4, lower switch Q5 switch opens and shuts off under the state of zero current and no-voltage, thus reduction switching loss, improve power supply conversion efficiency.
Shown in composition graphs 2 and Fig. 6, second synchronization rectification circuit comprises transformer T1, rectify control chip U5, switching tube Q5, rectify control chip U6, switching tube Q6, electrochemical capacitor EC9, electrochemical capacitor EC10, electrochemical capacitor EC11, and rectify control chip U5, rectify control chip U6 are synchronous rectification control chip; The phase place height in the sinusoidal source of the complementary push-pull that the T1 primary side that rectify control chip U5 detects transformer by 1 pin exports, rectify control chip U5, again from the break-make of switch Q5 4 pin output pwm signal controls, makes lower switch Q5 open and shut off under the state of zero current and no-voltage; Rectify control chip U6 detects the phase place height in the sinusoidal source of complementary push-pull that transformer T1 primary side exports by 1 pin, rectify control chip U6 is again from the break-make of 4 pin output pwm signal control switching tube Q6, switching tube Q6 is opened and shut off under the state of zero current and no-voltage, be direct current by the rectification of sine pulse energy, internal resistance because of switching tube Q5, switching tube Q6 and metal-oxide-semiconductor is all milliohm rank, therefore rectifier loss is very little, switching tube opens and shuts off under the state of zero current and no-voltage, thus can improve circuit efficiency.
Shown in composition graphs 2 and Fig. 7, photoelectric coupling loop comprises resistance R59, resistance R61, transistor U3, light-emitting diode U4, resistance R64, resistance R65 and resistance R26, when output voltage uprises, resistance R64, resistance R63, resistance R65 samples to transistor U3 control pin from output dividing potential drop, make transistor U3 output impedance step-down, cause the ER effect flowing through light-emitting diode U4 end large, the luminous quantity of light-emitting diode U4 strengthens, the impedance of the photosensitive receiving tube end of light-emitting diode U4 is reduced, the 5 pin resistance to earth step-downs of corresponding control chip U2 and voltage to earth step-down, 15 pin of control chip U2 and 11 pin are made to export one group of signal frequency step-down, make the energy step-down transmitted by transformer T1, thus use output voltage step-down, when output voltage is low, with during in set point there is again the change contrary with said process in circuit, makes output voltage be controlled in set point 5Vdc all the time.
Shown in composition graphs 2 to Figure 10, USB output module comprises multiple output port, multiple output port exports rear for the signal of telecommunication shunting being input to USB output module, and the both positive and negative polarity of USB output module 6 is wired on output point VO+ and the VO-of secondary rectification circuit 4.
As shown in Fig. 2 and Fig. 8, the first port comprises electric capacity 2C3, control chip 2U2, control chip 2U2A, electric capacity 2C4, output port 2CON2 formation output first port; The output signal of telecommunication of secondary rectification circuit 4 passes through 3 pin of resistance F1 to control chip 2U2, control chip 2U2A, and control chip 2U2A exports from 1 pin and 5 pin, delivers to the 1 and 4 pin power supply to the device of output port 2CON2 through electric capacity 2C4 filtering; The signal and communication mouth of equipment carries out communication by 2 and 3 pin of output port 2CON2 to 3 pin of chip U1 and 4 pin, and as communication success, equipment then charges in an optimal manner.
As shown in Fig. 2 and Fig. 9, the second port comprises resistance F2, electric capacity 2C5, control chip 2U3, control chip 2U3A, electric capacity 2C6, chip U2, electric capacity 2C13, output port 2CON3; Secondary rectification circuit 4 exports 3 pin of the signal of telecommunication by resistance F2 to control chip 2U3, control chip 2U3A by resistance, and control chip 2U3A exports from 1 pin and 5 pin, delivers to the 1 and 4 pin power supply to the device of output port 2CON3 through electric capacity 2C6 filtering; The signal and communication mouth of equipment carries out communication by 2 and 3 pin of output port 2CON3 to 6 pin of U2 and 1 pin, and as communication success, equipment then charges in an optimal manner.
As shown in Fig. 2 and Figure 10,3rd port comprises the first electronic circuit A and the second electronic circuit B, the output signal of telecommunication of secondary rectification circuit 4 passes through the control chip 3U5 of resistance F6 to the second electronic circuit B, 3 pin of control chip 3U5A of the first electronic circuit A, export from 1 pin and 5 pin through the control chip 3U5A of the second electronic circuit B, the 1 and 4 pin power supply to the device of the output port 3CON5 of the second electronic circuit B are delivered in the electric capacity 3C10 filtering through the second electronic circuit B; The signal and communication mouth of equipment carries out communication by 2 and 3 pin of the output port 3CON5 of the second electronic circuit B to 3 pin of the chip U5 of the first electronic circuit A and 4 pin, and as communication success, equipment then charges in an optimal manner.
Above-described is only execution modes more of the present utility model.For the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design, can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (8)
1. there is the charger of multiple USB output port, it is characterized in that, comprise filter circuit (1), pfc circuit (2), LLC resonant circuit (3), second synchronization rectification circuit (4) and USB output module (6), input electrical signal is carried out filtering by described filter circuit (1), after rectification, export to pfc circuit (2), after the signal of telecommunication that filter circuit inputs is carried out power factor correction by described pfc circuit (2), export to LLC resonant circuit (3), after the signal of telecommunication of described LLC resonant circuit (3) to input carries out harmonic conversion, export to second synchronization rectification circuit (4), USB output module (6) is exported to through output port after the signal of telecommunication of described second synchronization rectification circuit (4) to input carries out synchronous rectification.
2. the charger with multiple USB output port according to claim 1, it is characterized in that, also comprise photoelectric coupling control loop (5), the signal of telecommunication of described second synchronization rectification circuit (4) is fed back to described LLC resonant circuit (3) by described photoelectric coupling control loop (5).
3. the charger with multiple USB output port according to claim 2, is characterized in that, described USB output module (6) comprises multiple output port, and multiple described output port will export after being input to the shunting of the USB output module signal of telecommunication.
4. the charger with multiple USB output port according to claim 3, it is characterized in that, described filter circuit (1) comprises filtering electronic circuit and commutation sub-circuit, the signal of telecommunication of input filter circuit, carry out after filtering through filtering electronic circuit, flow into commutation sub-circuit, commutation sub-circuit exports after the signal of telecommunication rectification of inflow.
5. the charger with multiple USB output port according to claim 4, it is characterized in that, described pfc circuit (2) comprises control chip U1, energy storage inductor L2, switching tube Q1, rectifying tube D3, inductance THR1 and electrochemical capacitor EC1, control chip U1 output pulse signal is to switching tube Q1, by electrical power storage in energy storage inductor L2, the Pulse Electric that control chip U1 exports, after rectifying tube D3 rectification, is stored in electrochemical capacitor EC1.
6. the charger with multiple USB output port according to claim 5, it is characterized in that, described LLC resonant circuit (3) comprises control chip U2, upper switching circuitry, lower switching circuitry and LLC harmonic oscillator circuit, control chip U2 exports control signal to upper switching circuitry, the break-make of switching circuitry in control, control chip U2 exports control signal to lower switching circuitry, and control the break-make of lower switching circuitry, LLC harmonic oscillator circuit converts the signal of telecommunication of input to sine wave signal.
7. the charger with multiple USB output port according to claim 6, it is characterized in that, described second synchronization rectification circuit (4) comprises transformer T1, rectify control chip U5, switching tube Q5, rectify control chip U6, switching tube Q6, electrochemical capacitor EC9, electrochemical capacitor EC10, electrochemical capacitor EC11, after rectify control chip U5 detects the signal of telecommunication of transformer T1 primary side, export control signal to switching tube Q5, the break-make of control switch pipe Q5, after rectify control chip U6 detects the signal of telecommunication of transformer T1 primary side, export control signal to switching tube Q6, the break-make of control switch pipe Q6.
8. the charger with multiple USB output port according to claim 7, it is characterized in that, described photoelectric coupling loop (5) comprises resistance R59, resistance R61, transistor U3, light-emitting diode U4, resistance R64, resistance R65 and resistance R26, resistance R64, resistance R65, resistance R63 is respectively after output sampling, the signal of telecommunication is fed back to the control pin of transistor U3, U3 exports the brightness that the signal of telecommunication controls light-emitting diode U4, the signal of telecommunication is fed back to control chip U2 by U4, after U2 receiving feedback signals, export control signal to transformer T1, the Energy transmission of control transformer T1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520504966.9U CN204947628U (en) | 2015-07-13 | 2015-07-13 | There is the charger of multiple USB output port |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520504966.9U CN204947628U (en) | 2015-07-13 | 2015-07-13 | There is the charger of multiple USB output port |
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| CN204947628U true CN204947628U (en) | 2016-01-06 |
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| CN201520504966.9U Active CN204947628U (en) | 2015-07-13 | 2015-07-13 | There is the charger of multiple USB output port |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790359A (en) * | 2016-04-08 | 2016-07-20 | 刘俊 | Voltage stabilization shunting mobile phone charging device |
| CN110752760A (en) * | 2019-10-31 | 2020-02-04 | 广州市凯辉电子有限公司 | Switching power supply circuit and switching power supply thereof |
-
2015
- 2015-07-13 CN CN201520504966.9U patent/CN204947628U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790359A (en) * | 2016-04-08 | 2016-07-20 | 刘俊 | Voltage stabilization shunting mobile phone charging device |
| CN110752760A (en) * | 2019-10-31 | 2020-02-04 | 广州市凯辉电子有限公司 | Switching power supply circuit and switching power supply thereof |
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