CN203014464U - Wireless charging device with bypass control - Google Patents

Abstract

The utility model relates to a wireless charging device with bypass control, it includes: the logic control unit is electrically connected with a wireless transmitting unit, a full-bridge inverter, a buck-boost unit, a discharge switch unit and a reverse current preventer; the discharge switch unit is connected with a battery, and the inlet end of the reverse flow preventer is connected with a charging end; when the charging end is connected with an external power supply, the logic control unit turns on the reverse current preventer to turn off the discharge switch unit, the input voltage of the external power supply is boosted by the voltage boosting and reducing unit, the direct current is converted into alternating current by the full-bridge inverter, the alternating current is induced by the coil in the wireless transmitting unit to provide transmitting power, and the electronic product on the opposite side can achieve the purpose of wireless charging after receiving the transmitting power of the wireless transmitting unit.

Description

Wireless charging device with bypass control

technical field

The utility model relates to a wireless charging device with bypass control, in particular to a wireless charging device that adopts an external power supply when an external power supply is connected, and is separated from the power supply from the battery; on the contrary, if the detection fails When the external power is supplied, the battery transmission mode can be activated, and the power of the battery is automatically used to provide the transmission power of the wireless transmission unit.

Background technique

With the increasing popularity of wireless charging, the future is bound to evolve into a state where wireless charging can be performed anywhere.

Although wireless charging anywhere brings great convenience, whether it is wired or wireless charging, each surge generated at the beginning of charging will inevitably cause cumulative damage to the battery, and then cumulatively reduce battery life. , In other words, as the number of charging increases, the life of the battery becomes shorter and shorter, and the charging and discharging efficiency of the battery becomes worse and worse.

It can be seen that the known wireless charging device uses a battery to provide transmission power, which easily leads to loss of service life of the battery and poor efficiency in providing transmission power.

In view of this, the inventor of this utility model has devoted himself to research, design and assembly, and expects to provide a wireless charging device with bypass control. When an external power supply is connected, the external power supply is used to supply the transmission mode, and it is separated from the battery. On the contrary, if no external power source is detected, the battery transmission mode can be activated to automatically allow the power of the battery to provide the transmission power of the wireless transmission unit, which is the creator of the utility model.

Utility model content

The purpose of the utility model is to provide a wireless charging device with bypass control to improve the defects in the known technology.

In order to achieve the above purpose, the wireless charging device with bypass control provided by the utility model includes:

a logic control unit;

a wireless transmitting unit, connected to the logic control unit;

a full-bridge inverter connected to the wireless transmitting unit and the logic control unit;

a buck-boost unit connected to the full-bridge inverter and the logic control unit;

A discharge switch unit is provided with a battery connection terminal, a signal control terminal and an output terminal, the signal control terminal is connected to the logic control unit, and the output terminal is connected to the buck-boost unit;

A battery connected to the battery connection end of the discharge switch unit;

a control switch, one end of the control switch is connected to the battery connection end, and the other end of the control switch is connected to the signal control end through a first diode; and

A backflow preventer has an inlet port, an outlet port and a control port, the inlet port is connected to a first resistor end and a charging end, the other end of the first resistor is connected to the logic control unit and a second resistor end, The other end of the second resistor is grounded, the outlet end is connected between the discharge switch unit and the buck-boost unit, and the control end is connected to the logic control unit.

The wireless charging device with bypass control, wherein the backflow preventer includes: a first transistor, a second transistor, a third resistor, a first bipolar junction transistor and a fourth resistor, the first A transistor and the second transistor respectively have a drain terminal, a source terminal and a gate terminal, one end of the third resistor is connected to the source terminals of the first transistor and the second transistor, and the other end of the third resistor is connected to the first transistor. A transistor, the gate terminal of the second transistor and the first bipolar junction transistor, and the first bipolar junction transistor has a collector terminal, an emitter terminal, and a base terminal, and the collector terminal is connected to the first bipolar junction transistor. At the other end of the three resistors, the emitter is grounded, and the base is connected to the logic control unit via a fourth resistor.

In the wireless charging device with bypass control, each of the first transistor and the second transistor is a MOSFET.

The wireless charging device with bypass control, wherein the discharge switch unit includes: a third transistor, a fourth transistor, a fifth resistor, a sixth resistor, and a second bipolar junction transistor; The third transistor and the fourth transistor respectively have a drain terminal, a source terminal and a gate terminal, one end of the fifth resistor is connected to the source terminals of the third transistor and the fourth transistor, and the other end of the fifth resistor is connected to the The gate terminal of the third transistor and the fourth transistor and the second bipolar junction transistor; and the second bipolar junction transistor has a collector terminal, an emitter terminal and a base terminal, and the collector terminal is connected to the The other end of the fifth resistor, the emitter end is grounded, and the base end is connected to the signal control end via a sixth resistor.

In the wireless charging device with bypass control, each of the third transistor and the fourth transistor is a MOSFET.

The wireless charging device with bypass control, wherein the buck-boost unit includes: an inductor, a fifth transistor, a sixth transistor, and a capacitor, one end of the inductor is connected to the backflow preventer and the discharge switch unit, and the inductor The other end is connected between the fifth transistor and the sixth transistor, the fifth and sixth transistors respectively have a drain terminal, a source terminal and a gate terminal, and the source terminal of the fifth transistor is connected to the sixth transistor The drain terminal of the fifth transistor is connected to one terminal of the capacitor and the full-bridge inverter, and the other terminal of the capacitor is grounded.

In the wireless charging device with bypass control, each of the fifth transistor and the sixth transistor is a MOSFET.

The wireless charging device with bypass control, wherein the full-bridge inverter has a first pin, a second pin, a third pin and a fourth pin, the first pin is connected to the In the step-down unit, the second pin and the fourth pin are connected to the wireless transmitting unit, and the third pin is grounded.

The wireless charging device with bypass control, wherein the full-bridge inverter includes: a seventh transistor, an eighth transistor, a ninth transistor, and a tenth transistor, and the seventh transistor, the eighth transistor, The ninth transistor and the tenth transistor respectively have a gate terminal, and each gate terminal is connected to the logic control unit.

In the wireless charging device with bypass control, each of the seventh transistor, the eighth transistor, the ninth transistor and the tenth transistor is a MOSFET.

The wireless charging device with bypass control, wherein the logic control unit has a detection terminal, a digital signal control terminal, a reverse current prevention signal terminal, a transmission hold terminal, a transmission identification terminal, a first pulse width modulation Variable control terminal, a second pulse width modulation control terminal, a first control terminal, a second control terminal, a third control terminal, a fourth control terminal, a voltage terminal and a transmission control signal terminal; the detection The measuring end is connected to the other end of the first resistor and one end of the second resistor, the digital signal control end is connected to the signal control end through a second diode, the backflow prevention signal end is connected to the control end of the backflow preventer, the The emission holding end is connected to the signal control end of the discharge switch unit through a third diode, the emission identification end is connected to the signal control end of the discharge switch unit through a seventh resistor, the first pulse width modulation control end and the The second pulse width modulation control terminal is connected to the buck-boost unit, the first control terminal, the second control terminal, the third control terminal and the fourth control terminal are sequentially connected to the full-bridge inverter, and the voltage The terminal is connected between the buck-boost unit and the full-bridge inverter, and the transmission control signal terminal is connected to the wireless transmission unit.

In the wireless charging device with bypass control, the charging end of the backflow preventer is connected to an external power source.

In the wireless charging device with bypass control, the control switch is an automatic reset switch.

In summary, the features of the present utility model are arranged as follows:

1) This utility model can prolong the service life of the battery. When an external power supply is connected, the external power supply is used to power the transmission mode, and the power supply from the battery is separated; on the contrary, if the external power supply cannot be detected, the battery transmission can be started mode, the power of the battery is automatically used to provide the transmission power of the wireless transmission unit.

2) When the utility model is used outdoors, it becomes a mobile battery, so that the electronic product on the opposite side can receive the power transmitted by the wireless transmitting unit to achieve the purpose of wireless charging.

3) The utility model can increase the efficiency of power usage, and the transmission power of the wireless transmission unit is directly provided by an external power supply.

Description of drawings

Fig. 1 is a schematic block diagram of an embodiment of the present invention.

Fig. 2 is a schematic circuit diagram of an embodiment of the utility model.

Explanation of main component symbols in the drawings:

10 logic control unit, 101 detection terminal, 102 digital signal control terminal, 103 backflow prevention signal terminal, 104 launch hold terminal, 105 launch identification terminal, 106 first pulse width modulation control terminal, 107 second pulse width modulation control terminal terminal, 108 first control terminal, 109 second control terminal, 110 third control terminal, 111 fourth control terminal, 112 voltage terminal, 113 transmission control signal terminal, 20 wireless transmitting unit, 30 full bridge inverter, 31 first One pin, 32 second pin, 33 third pin, 34 fourth pin, 35 seventh transistor, 36 eighth transistor, 37 ninth transistor, 38 tenth transistor, 351, 361, 371, 381 grid Terminal, 40 buck-boost unit, 41 inductor, 42 fifth transistor, 421, 431 drain terminal, 422, 432 source terminal, 423, 433 gate terminal, 43 sixth transistor, 44 capacitor, 50 discharge switch unit, 501 battery connection terminal, 502 signal control terminal, 503 output terminal, 53 control switch, 531 first diode, 532 second diode, 533 third diode, 534 seventh resistor, 54 third transistor, 541, 551 drain Extreme, 542, 552 source terminal, 543, 553 gate terminal, 55 fourth transistor, 56 fifth resistor, 57 second bipolar junction transistor, 571 base, 572 collector, 573 emitter, 58 sixth resistor , 60 backflow preventer, 601 inlet port, 611 first resistor, 612 charging port, 613 second resistor, 602 control port, 603 outlet port, 64 first transistor, 65 second transistor, 66 third resistor, 67 first Bipolar junction transistor, 671 base terminal, 672 collector terminal, 673 emitter terminal, 68 fourth resistor, 641, 651 drain terminal, 642, 652 source terminal, 643, 653 gate terminal, 70 battery.

Detailed ways

The wireless charging device with bypass control provided by the utility model adopts the transmission mode powered by the external power supply when an external power supply is connected, and is separated from the power supply from the battery.

The wireless charging device with bypass control provided by the utility model can start the battery transmission mode when no external power source is detected, and automatically use the power of the battery to provide the transmission power of the wireless transmission unit.

The wireless charging device with bypass control of the present invention comprises: a logic control unit; a wireless transmitting unit connected to the logic control unit; a full-bridge inverter connected to the wireless transmitting unit and the logic control unit; A buck-boost unit, connected to the full-bridge inverter and the logic control unit; a discharge switch unit, provided with a battery connection terminal, a signal control terminal and an output terminal, the signal control terminal is connected to the logic control unit, the The output end is connected to the buck-boost unit; a battery is connected to the battery connection end of the discharge switch unit; a control switch is connected to the battery connection end at one end, and the other end of the control switch is connected to the battery connection end through a first diode. signal control terminal; and a backflow preventer, which has an inlet port, an outlet port and a control port, the inlet port is connected to a first resistor end and a charging end, and the other end of the first resistor is connected to the logic control unit and a One end of the second resistor and the other end of the second resistor are grounded; the outlet end is connected between the discharge switch unit and the buck-boost unit; and the control end is connected to the logic control unit.

When the charging end of the backflow preventer is connected to an external power supply, the logic control unit turns on the backflow preventer, turns off the discharge switch unit, and the input voltage of the external power supply is boosted by the buck-boost unit, and then The direct current is converted into alternating current through the full-bridge inverter, and the alternating current is induced by the coil in the wireless transmitting unit to provide transmitting power, so that the electronic products on the opposite side can achieve wireless charging after sensing the transmitting power of the wireless transmitting unit the goal of.

Therefore, when an external power supply is connected, the external power supply is used to power the transmission mode, and the power from the battery is disconnected; on the contrary, if the external power supply is not detected, the battery transmission mode can be activated, and the battery power is automatically provided. The transmission power of the wireless transmission unit.

In order to further understand the features, characteristics and technical contents of the present utility model, please refer to the following detailed description and accompanying drawings of the present utility model, but the accompanying drawings are only for reference and illustration, and are not intended to limit the present utility model.

Please refer to Fig. 1 to Fig. 2 at the same time, the utility model is a wireless charging device with bypass control, which includes: a logic control unit 10; a wireless transmitting unit 20 connected to the logic control unit 10; A bridge inverter 30 is connected to the wireless transmitting unit 20 and the logic control unit 10; a buck-boost unit 40 is connected to the full-bridge inverter 30 and the logic control unit 10; a discharge switch unit 50 is provided with a battery A connection terminal 501, a signal control terminal 502 and an output terminal 503, the signal control terminal 502 is connected to the logic control unit 10, the output terminal 503 is connected to the buck-boost unit 40, wherein the battery connection terminal 501 is further connected to a battery 70 A control switch 53, one end of the control switch 53 is connected to the battery connection terminal 501, and the other end of the control switch 53 is connected to the signal control terminal 502 via a first diode 531, wherein the control switch 53 is an automatic reset switch; And a backflow preventer 60 has an inlet port 601, an outlet port 603 and a control port 602, the inlet port 601 is connected to one end of a first resistor 64 and a charging port 612, wherein the charging port 612 of the backflow preventer 6 Further connect an external power supply (not shown in the figure), the other end of the first resistor 611 is connected to the logic control unit 10 and one end of a second resistor 613, the other end of the second resistor 613 is grounded; and the outlet port 603 is connected to the Between the discharge switch unit 50 and the buck-boost unit 40 ; and the control terminal 602 is connected to the logic control unit 10 .

When the charging terminal 612 of the backflow preventer 60 is connected to an external power source, the logic control unit 10 will turn on the backflow preventer 60 and turn off the discharge switch unit 50, and the input voltage of the external power source will pass through the buck-boost unit 40 to boost the voltage, and then convert the direct current to alternating current through the full-bridge inverter 30, and induce the alternating current by the coil in the wireless transmitting unit 20 to provide transmitting power, so that the electronic product on the opposite side senses the wireless transmitting unit 20% of the power is transmitted to achieve the purpose of wireless charging.

Wherein, the backflow preventer 60 includes: a first transistor 64, a second transistor 65, a third resistor 66, a first bipolar junction transistor 67 and a fourth resistor 68, the first transistor 64 and The second transistor 65 respectively has a drain terminal 641, 651, a source terminal 642, 652 and a gate terminal 643, 653, and one end of the third resistor 66 is connected to the source terminal of the first transistor 64 and the second transistor 65 642, 652, the other end of the third resistor 66 is connected to the gate terminals 643, 653 of the first transistor 64 and the second transistor 65 and the first bipolar junction transistor 67, and the first bipolar junction transistor The transistor 67 has a collector terminal 672, an emitter terminal 673, and a base terminal 671. The collector terminal 672 is connected to the other end of the third resistor 66, the emitter terminal 673 is grounded, and the base terminal 671 is connected to the logic through a fourth resistor 68. The control unit 10; wherein the first transistor 64 and the second transistor 65 are respectively a MOSFET.

Moreover, the discharge switch unit 50 also includes: a third transistor 54, a fourth transistor 55, a fifth resistor 56, a sixth resistor 58, and a second bipolar junction transistor 57; and the third transistor 54 and the fourth transistor 55 respectively have a drain terminal 541,551, a source terminal 542,552 and a gate terminal 543,553, one end of the fifth resistor 56 is connected to the third transistor 54 and the fourth transistor 55 Source terminals 542, 552, the other end of the fifth resistor 56 is connected to the gate terminals 543, 553 of the third transistor 54 and the fourth transistor 55 and the second bipolar junction transistor 57; The junction transistor 57 has a collector terminal 572, an emitter terminal 573 and a base terminal 571, the collector terminal 572 is connected to the other end of the fifth resistor 56, the emitter terminal 573 is grounded, and the base terminal 571 is connected to a sixth resistor 58. The signal control terminal 502; wherein, the third transistor 54 and the fourth transistor 55 are respectively a MOSFET.

Moreover, the buck-boost unit 40 includes: an inductor 41, a fifth transistor 42, a sixth transistor 43, and a capacitor 44. One end of the inductor 41 is connected to the backflow preventer 60 and the discharge switch unit 50, and the inductor 41 is connected to the discharge switch unit 50. One end is connected between the fifth transistor 42 and the sixth transistor 43, the fifth transistor 42 and the sixth transistor 43 respectively have a drain terminal 421, 431, a source terminal 422, 432 and a gate terminal 423, 433, The source terminal 422 of the fifth transistor 42 is connected to the drain terminal 431 of the sixth transistor 43 , the drain terminal 421 of the fifth transistor 42 is connected to one terminal of the capacitor 44 and the full-bridge inverter 30 , and the other terminal of the capacitor 44 is grounded. Wherein the fifth transistor 42 and the sixth transistor 43 are respectively a MOSFET.

Furthermore, the full bridge inverter 30 has a first pin 31, a second pin 32, a third pin 33 and a fourth pin 34, the first pin 31 is connected to the buck-boost Unit 40, the second pin 32 and the fourth pin 34 are connected to the wireless transmitting unit, the third pin 33 is grounded; and the full bridge inverter 30 also includes: a seventh transistor 35, an eighth Transistor 36, a ninth transistor 37 and a tenth transistor 38, and the seventh transistor 35, the eighth transistor 36, the ninth transistor 37 and the tenth transistor 38 respectively have a gate terminal 351, 361, 371, 381, The logic control unit 10 is connected to each of the gate terminals 351 , 361 , 371 , 381 . Wherein the seventh transistor 35 , the eighth transistor 36 , the ninth transistor 37 and the tenth transistor 38 are each a MOSFET.

The logic control unit 10 has a detection terminal 101, a digital signal control terminal 102, a backflow prevention signal terminal 103, a transmission hold terminal 104, a transmission identification terminal 105, a first pulse width modulation control terminal 106, a A second pulse width modulation control terminal 107, a first control terminal 108, a second control terminal 109, a third control terminal 110, a fourth control terminal 111, a voltage terminal 112 and a transmission control signal terminal 113; The detection end 101 is connected to the other end of the first resistor 611 and one end of the second resistor 613, the digital signal control end 102 is connected to the signal control end 502 through a second diode 532, and the backflow prevention signal end 103 is connected to The control end 602 of the backflow preventer 60, the emission holding end 104 is connected to the signal control end 502 of the discharge switch unit 50 through a third diode 533, and the emission identification end 105 is connected to the discharge switch through a seventh resistor 534 The signal control terminal 502 of the unit 50, the first pulse width modulation control terminal 106 and the second pulse width modulation control terminal 107 are connected to the buck-boost unit 40, the first control terminal 108, the second control terminal 109 , the third control terminal 110 and the fourth control terminal 111 are sequentially connected to the full-bridge inverter 30, the voltage terminal 112 is connected between the buck-boost unit 40 and the full-bridge inverter 30, the transmission control The signal terminal 113 is connected to the wireless transmitting unit 20 .

The transmission mode provided by the wireless charging device with bypass control of the utility model includes: a battery transmission mode and an external power supply transmission mode. When an external power supply is connected, the transmission mode is powered by the external power supply, and the power from the battery 70 is disconnected; otherwise, if no external power supply is detected, the battery transmission mode can be started, and the power of the battery 70 is automatically used to provide wireless transmission. The transmitting power of the transmitting unit 20.

When using the battery launch mode: it can be switched by pressing the control switch 53 or using the digital signal control terminal 103 of the logic control unit 10 to send a signal to switch the discharge switch unit 50, when the control switch 53 is pressed, the discharge switch unit 50 is turned on Then enter the battery launch mode, and let the logic control unit 10 recognize that it is currently switched to the battery launch mode, so that the discharge switch unit 50 allows power to pass through, and then connects to the logic control unit through the fifth transistor 42 of the buck-boost unit 40 The voltage terminal 112 of 10 is used to supply power to the logic control unit.

When the logic control unit 10 has recognized that it is currently in the battery launch mode, the third diode 533 can also be used to keep the launch hold terminal 104 of the logic control unit 10 in the battery launch mode continuously and continuously provide a launch signal At the launch identification terminal 105, it can keep in the launch state.

The transmission control signal terminal 113 of the logic control unit 10 will detect whether there is an electronic product to be charged on the opposite side of the wireless transmission unit 20 with antenna, if not detected, the logic control unit 10 will control the transmission to stop, so The detection is to detect whether there is indeed a load on the opposite side of the wireless transmitting unit 20 by the transmitting control signal terminal 112:

If there is no load: stop transmitting;

If there is a load: the logic control unit 10 will output signals from its first and second PWM control terminals 106 and 107 to drive the fifth and sixth transistors 42 and 43 in the buck-boost unit 40 . By the signals of the first pulse width modulation control terminal 106 and the second pulse width modulation control terminal 107, the fifth and sixth transistors 42, 43 can be continuously switched on and off at a very high frequency, When the sixth transistor 43 is turned on and the fifth transistor 42 is turned off, since one end of the sixth transistor 43 and the battery 70 are both grounded to form a loop, so that the power of the battery 70 can pass through the discharge switch unit 50 and the buck-boost The inductance 41 of the unit 40 is to flow through the sixth transistor 43, thereby charging the inductance 41; when the fifth transistor 42 is on and the sixth transistor 43 is off, the electricity from the battery 70 passes through the inductance 41 and then goes to the first The five-transistor 42 discharges the inductor 41, and outputs a direct current corresponding to the capacitor 44. The direct current is a synchronously rectified and boosted direct current, and then the full-bridge inverter 30 converts the direct current into an alternating current to provide the wireless transmitting unit 20 with induction The transmission power is provided externally after the alternating current.

In other words, the fifth and sixth transistors 42, 43 are one-on-one-off, and one-off-one-on, so that the inductor 41 is charged and discharged, and the capacitor 44 stores the DC power that has undergone synchronous rectification and boosting, and then passes through the full-bridge inverter. The inverter 30 converts the direct current into alternating current to provide the wireless transmitting unit 20 to induce the alternating current and transmit power externally, so that the electronic products on the opposite side can correspondingly receive the power transmitted by the wireless transmitting unit 20 to achieve the purpose of wireless charging.

When using external power supply to transmit mode:

If the charging terminal 612 of the backflow preventer 60 is connected to an external power supply, the detection terminal 101 of the logic control unit 10 can detect that the external power supply is connected, and switch the wireless charging device with bypass control of the present invention to the external power supply. Power supply transmission mode, at this time, the digital signal control terminal 102 of the logic control unit 10 will send a signal to close the discharge switch unit 50 to prevent the battery from discharging, and open the backflow preventer 60 to allow the power provided by the external power supply to directly Conducted to the buck-boost unit 40, so that the power provided by the external power supply is synchronously rectified and boosted by the buck-boost unit 40, and then the direct current is converted into alternating current through the full-bridge inverter 30 to provide the wireless transmission unit 20 After inducting the alternating current, the transmission power is provided externally.

The transmission control signal terminal 113 of the logic control unit 10 will detect whether there is an electronic product to be charged on the opposite side of the wireless transmission unit 20 with antenna, if not detected, the logic control unit 20 will control the transmission to stop, so The detection is to detect whether there is indeed a load on the opposite side of the wireless transmitting unit 20 by the transmitting control signal terminal 113:

If there is no load: stop transmitting;

If there is a load: the logic control unit 10 will output signals from its first and second PWM control terminals 106 and 107 to drive the fifth and sixth transistors 42 and 43 in the buck-boost unit 40 . By the signals of the first pulse width modulation control terminal 106 and the second pulse width modulation control terminal 107, the fifth and sixth transistors 42, 43 can be continuously switched on and off at a very high frequency, When the sixth transistor 43 is on and the fifth transistor 42 is off, since one end of the sixth transistor 43 and the external power supply are grounded, a loop is formed, so that the power of the external power supply can pass through the backflow preventer 60 and lift The inductance of the voltage unit 40 flows through the sixth transistor 43, thereby charging the inductance 41; when the fifth transistor 42 is on and the sixth transistor 43 is off, the electricity from the battery passes through the inductance 41 and then goes to the fifth transistor. The transistor 42 discharges the inductance 41, and outputs a direct current corresponding to the capacitor 44. The direct current is a synchronously rectified and boosted direct current, and then the full-bridge inverter 30 converts the synchronously rectified and boosted direct current into an alternating current to provide the wireless The transmitting unit 20 senses the alternating current and provides transmitting power to the outside.

In other words, the fifth and sixth transistors 42, 43 are one-on-one-off, and one-off-one-on, so that the inductor 41 is charged and discharged, and the capacitor 44 stores the DC power that has undergone synchronous rectification and boosting, and then passes through the full-bridge inverter. The inverter 30 converts the direct current into alternating current to provide the wireless transmitting unit 20 to induce the alternating current and transmit power externally, so that the electronic product on the opposite side can receive the power transmitted by the wireless transmitting unit 20 to achieve the purpose of wireless charging.

The above descriptions are only preferred feasible embodiments of the present utility model, and are not intended to limit the patent scope of the present utility model. For example, all equivalent structural changes made by using the description of the utility model and the contents of the accompanying drawings are all included in this utility model. within the scope of the utility model claims.

Claims (13)

1. the wireless charging device with Bypass Control, is characterized in that, comprising:

One logic control element;

One wireless transmitting unit connects this logic control element;

One full-bridge inverter connects this wireless transmitting unit and this logic control element;

One buck unit connects this full-bridge inverter and this logic control element;

One discharge switching element is provided with a battery link, a signal controlling end and an output, and this signal controlling end connects this logic control element, and this output connects this buck unit;

One battery connects the battery link of this discharge switching element;

One control switch, this control switch one end connects this battery link, and this control switch other end connects this signal control end via one first diode; And

One adverse current preventer, have an arrival end, a port of export and a control end, this arrival end connects one first resistance one end and a charging end, this the first resistance other end connects this logic control unit and one second resistance one end, this the second resistance other end ground connection, and this port of export is connected between this discharge switching element and buck unit, and this control end connects this logic control element again.

2. has as claimed in claim 1 the wireless charging device of Bypass Control, it is characterized in that, this adverse current preventer comprises: a first transistor, one transistor seconds, one the 3rd resistance, one first bipolarity junction transistor and one the 4th resistance, this the first transistor and this transistor seconds respectively have respectively a drain electrode end, one source pole end and a gate terminal, the 3rd resistance one end connects the source terminal of this first transistor and this transistor seconds, the 3rd resistance other end connects gate terminal and this first bipolarity junction transistor of this first transistor and this transistor seconds, this the first bipolarity junction transistor has a collector terminal again, one emitter-base bandgap grading end, one base terminal, this collector terminal connects the 3rd resistance other end, this emitter-base bandgap grading end ground connection, this base terminal connects this logic control element via one the 4th resistance.

3. have as claimed in claim 2 the wireless charging device of Bypass Control, it is characterized in that, this first transistor and this transistor seconds respectively are respectively a mos field effect transistor.

4. have as claimed in claim 1 the wireless charging device of Bypass Control, it is characterized in that, this discharge switching element comprises: one the 3rd transistor, one the 4th transistor, one the 5th resistance, one the 6th resistance and one second bipolarity junction transistor; The 3rd transistor and the 4th transistor respectively have respectively a drain electrode end, one source pole end and a gate terminal again, the 5th resistance one end connects the 3rd transistor and the 4th transistorized source terminal, and the 5th resistance other end connects the 3rd transistor and the 4th transistorized gate terminal and this second bipolarity junction transistor; This second bipolarity junction transistor has a collector terminal, an emitter-base bandgap grading end and a base terminal again, and this collector terminal connects the 5th resistance other end, this emitter-base bandgap grading end ground connection, and this base terminal connects this signal controlling end via one the 6th resistance.

5. have as claimed in claim 4 the wireless charging device of Bypass Control, it is characterized in that, the 3rd transistor and the 4th transistor respectively are respectively a mos field effect transistor.

6. has as claimed in claim 1 the wireless charging device of Bypass Control, it is characterized in that, this buck unit comprises: an inductance, one the 5th transistor, one the 6th transistor and an electric capacity, this inductance one end connects this adverse current preventer and this discharge switching element, the inductance other end connects between the 5th transistor and the 6th transistor, the the 5th and the 6th transistor respectively has respectively a drain electrode end, one source pole end and a gate terminal, the 5th transistorized source terminal connects the 6th transistorized drain electrode end, the 5th transistorized drain electrode end connects this electric capacity one end and this full-bridge inverter, this electric capacity other end ground connection.

7. have as claimed in claim 6 the wireless charging device of Bypass Control, it is characterized in that, the 5th transistor and the 6th transistor respectively are respectively a mos field effect transistor.

8. has as claimed in claim 1 the wireless charging device of Bypass Control, it is characterized in that, this full-bridge inverter has one first pin, one second pin, one the 3rd pin and one the 4th pin, this first pin connects this buck unit, this second pin and the 4th pin connect this wireless transmitting unit, the 3rd pin ground connection.

9. has as claimed in claim 8 the wireless charging device of Bypass Control, it is characterized in that, this full-bridge inverter comprises: one the 7th transistor, one the 8th transistor, one the 9th transistor and 1 the tenth transistor, and the 7th transistor, the 8th transistor, the 9th transistor and the tenth transistor respectively have respectively a gate terminal, connect this logic control element by this gate terminal respectively.

10. have as claimed in claim 9 the wireless charging device of Bypass Control, it is characterized in that, the 7th transistor, the 8th transistor, the 9th transistor and the tenth transistor respectively are respectively a mos field effect transistor.

11. have as claimed in claim 1 the wireless charging device of Bypass Control, it is characterized in that, this logic control element has a sense terminal, a Digital Signals end, an adverse current and prevents that signal end, the emission from keeping end, an emitting identification end, one first pulse width modulation control end, one second pulse width modulation control end, one first control end, one second control end, one the 3rd control end, one the 4th control end, a voltage end and an emissioning controling signal end, this sense terminal connects the other end and this second resistance one end of this first resistance, this Digital Signals end connects this signal controlling end via one second diode, this adverse current prevents that signal end from connecting the control end of this adverse current preventer, this emission keeps end to connect the signal controlling end of this discharge switching element via one the 3rd diode, this emitting identification end connects the signal controlling end of this discharge switching element via one the 7th resistance, this the first pulse width modulation control end and this second pulse width modulation control end connect this buck unit, this first control end, this second control end, the 3rd control end and the 4th control end sequentially connect this full-bridge inverter, this voltage end connects between this buck unit and this full-bridge inverter, this emissioning controling signal end connects this wireless transmitting unit.

12. have as claimed in claim 1 the wireless charging device of Bypass Control, it is characterized in that, the charging end of this adverse current preventer connects an external power source.

13. have as claimed in claim 1 the wireless charging device of Bypass Control, it is characterized in that, this control switch is an automatic reset switch.

Images