CN210839011U - Simplified wireless charger - Google Patents
Simplified wireless charger Download PDFInfo
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- CN210839011U CN210839011U CN201922124149.1U CN201922124149U CN210839011U CN 210839011 U CN210839011 U CN 210839011U CN 201922124149 U CN201922124149 U CN 201922124149U CN 210839011 U CN210839011 U CN 210839011U
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Abstract
The utility model discloses a wireless charger of simplified form, wireless charger includes the central control unit, power input interface unit, the switch unit, drive unit, the current detection unit, voltage detection unit and coil, power input interface respectively with the central control unit, the switch unit is connected with drive unit, the central control unit is given to the input power, switch unit and drive unit power supply, the control end and the positive power supply of switch unit are connected, the switch unit is connected with drive unit, the central control unit is connected with drive unit, the loop connection is on drive unit, the data acquisition end of current detection unit and voltage detection unit is connected with drive unit respectively, the signal output part of current detection unit and voltage detection unit is connected in the central control unit respectively. The utility model discloses a special circuit structure design has simplified circuit structure, has reduced the restriction for circuit design and product design, has reduced product cost.
Description
Technical Field
The utility model discloses a wireless charger, especially a wireless charger of simplified form.
Background
Along with the continuous improvement of the requirements of power supply quality, safety, reliability, convenience, instantaneity, special occasions, special geographic environments and the like of electric equipment, a contact type electric energy transmission mode can not meet the actual requirements more and more, and then the wireless charger is in charge. The wireless charger in the prior art is a device for charging by utilizing the principle of electromagnetic induction, the principle of the wireless charger is similar to that of a transformer, a coil is respectively arranged at a transmitting end and a receiving end, the coil at the transmitting end sends out an electromagnetic signal to the outside under the action of electric power, and the coil at the receiving end receives the electromagnetic signal and converts the electromagnetic signal into current, so that the purpose of wireless charging is achieved. The wireless charging technology is a special power supply mode, does not need a power line, depends on electromagnetic wave propagation, converts electromagnetic wave energy into electric energy, and finally realizes wireless charging.
Along with the wireless charger technology is more and more mature, it also more and more uses in people's life, and the wireless charger structure among the prior art is comparatively complicated, and circuit design is complicated, causes on the one hand that the overall cost is high and does not hold, and on the other hand also brings many restrictions for product structural design, influences the development of product.
Disclosure of Invention
To the above-mentioned shortcoming that wireless charger structure is complicated among the prior art that mentions, the utility model provides a wireless charger of simplified form, it adopts special circuit structure design, has simplified circuit structure.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a wireless charger of simplified form, wireless charger includes central control unit, power input interface unit, the switch unit, drive unit, current detection unit, voltage detection unit and coil, power input interface respectively with central control unit, the switch unit is connected with drive unit, input power gives central control unit, switch unit and drive unit power supply, the control end and the positive power supply of switch unit are connected, the switch unit is connected with drive unit, central control unit is connected with drive unit, the coil is connected on drive unit, current detection unit and voltage detection unit's data acquisition end is connected with drive unit respectively, current detection unit and voltage detection unit's signal output part is connected in central control unit respectively.
The utility model provides a technical scheme that its technical problem adopted further still includes:
the central control unit adopts a small-sized single chip U6, and a +5V power supply is input by the power supply input interface unit and directly supplies power to the central control unit.
The switch unit comprises a triode Q1 and a triode Q2, the triode Q1 is an NPN type transistor, the triode Q2 is a PNP type silicon triode, the bases of the triode Q1 and the triode Q2 are respectively connected with a +5V power supply, the collector of the triode Q1 is connected with the +5V power supply, the collector of the triode Q2 is grounded, the emitter of the triode Q1 is connected with the emitter of the triode Q2, a resistor R1 is connected between the emitter of the triode Q1 and the emitter of the triode Q2 in series, and the emitter of the triode Q1 and the emitter of the triode Q2 are respectively connected with the drive unit.
The driving unit comprises two MOS chips which are respectively an MOS chip U11 and an MOS chip U12, wherein a source electrode of a first MOS tube in the MOS chip U11 is connected with a +5V power supply, a grid electrode of the first MOS tube in the MOS chip U11 is connected with an emitting electrode of a triode Q1, a drain electrode of the first MOS tube in the MOS chip U11 is connected with a coil, a source electrode of a second MOS tube in the MOS chip U11 is connected with the current detection unit, a grid electrode of the second MOS tube in the MOS chip U11 is connected with the emitting electrode of the triode Q2, and a drain electrode of the second MOS tube in the MOS chip U11 is connected with the coil. The source of the first MOS transistor in the MOS chip U12 is connected to a +5V power supply, the gate of the first MOS transistor in the MOS chip U12 is connected to a +5V power supply, a resistor R147 is connected in series between the gate of the first MOS transistor in the MOS chip U12 and the +5V power supply, the gate of the first MOS transistor in the MOS chip U12 is connected to the central controller, the drain of the first MOS transistor in the MOS chip U12 is connected to the coil, the source of the second MOS transistor in the MOS chip U12 is connected to the current detection unit, the gate of the second MOS transistor in the MOS chip U12 is grounded, a resistor R146 is connected in series between the gate of the second MOS transistor in the MOS chip U12 and the ground, the gate of the second MOS transistor in the MOS chip U12 is connected to the central control unit, and the drain of the second MOS transistor in the MOS chip U12 is connected to the coil.
The current detection unit and the voltage detection unit both adopt operational amplifiers, and the signal input end of the voltage detection unit is connected with the coil.
The central control unit is also connected with an indicator light unit, and the indicator light unit adopts an LED.
The utility model has the advantages that: the utility model discloses a special circuit structure design has simplified circuit structure, has reduced the restriction for circuit design and product design, has reduced product cost.
The present invention will be further described with reference to the accompanying drawings and the detailed description.
Drawings
Fig. 1 is a block diagram of the circuit of the present invention.
Fig. 2 is a schematic circuit diagram of the present invention.
Fig. 3 is a schematic circuit diagram of a part of the central control unit of the present invention.
Fig. 4 is a schematic diagram of the power input connector part circuit according to the present invention.
Fig. 5 is a schematic circuit diagram of a part of the switch unit of the present invention.
Fig. 6 is a schematic circuit diagram of a part of the driving unit of the present invention.
Fig. 7 is a schematic circuit diagram of a part of the voltage detection unit of the present invention.
Fig. 8 is a schematic circuit diagram of a part of the current detection unit of the present invention.
Fig. 9 is a schematic circuit diagram of a part of the indicator light unit of the present invention.
Detailed Description
The embodiment is a preferred embodiment of the present invention, and other principles and basic structures are the same as or similar to those of the embodiment, and are within the protection scope of the present invention.
Please refer to fig. 1 to fig. 9 in combination, the present invention mainly comprises a central control unit, a power input interface unit, a switch unit, a driving unit, a current detection unit, a voltage detection unit and a coil, wherein the power input interface is respectively connected with the central control unit, the switch unit and the driving unit, the input power supplies power to the central control unit, the switch unit and the driving unit, the control end of the switch unit is connected with a positive power supply, the switch unit is connected with the driving unit, the central control unit outputs a control signal to the driving unit, the driving unit is controlled to operate, the coil is connected to the driving unit, the data acquisition ends of the current detection unit and the voltage detection unit are respectively connected with the driving unit, the signal output ends of the current detection unit and the voltage detection unit are respectively connected with the central control unit for detecting the current information and the voltage information output by, and outputs it to the central control unit.
In this embodiment, the central control unit adopts a small-sized monolithic chip U6 with the model of XGC229, and the power input interface unit inputs a +5V power supply to directly supply power to the central control unit.
In this embodiment, power input interface unit adopts the USB interface, and the +5V power end direct input of its USB interface +5V power gives the utility model discloses supply power.
In this embodiment, the switching unit includes a transistor Q1 and a transistor Q2, the transistor Q1 is an NPN transistor of 8050 type, the transistor Q2 is a PNP silicon transistor of 8550 type, bases of the transistor Q1 and the transistor Q2 are respectively connected to the +5V power supply, a collector of the transistor Q1 is connected to the +5V power supply, a collector of the transistor Q2 is grounded, an emitter of the transistor Q1 is connected to an emitter of the transistor Q2, a resistor R1 is connected in series between the emitter of the transistor Q1 and the emitter of the transistor Q2, and the emitter of the transistor Q1 and the emitter of the transistor Q2 are respectively connected to the driving unit.
In this embodiment, the driving unit includes two MOS chips with model AO4606, which are a MOS chip U11 and a MOS chip U12, respectively, a source of a first MOS transistor in the MOS chip U11 is connected to the +5V power supply, a gate of the first MOS transistor in the MOS chip U11 is connected to an emitter of the transistor Q1, a drain of the first MOS transistor in the MOS chip U11 is connected to the coil, a source of a second MOS transistor in the MOS chip U11 is connected to the current detection unit, a gate of the second MOS transistor in the MOS chip U11 is connected to the emitter of the transistor Q2, and a drain of the second MOS transistor in the MOS chip U11 is connected to the coil. The source of the first MOS transistor in the MOS chip U12 is connected to a +5V power supply, the gate of the first MOS transistor in the MOS chip U12 is connected to a +5V power supply, a resistor R147 is connected in series between the gate of the first MOS transistor in the MOS chip U12 and the +5V power supply, the gate of the first MOS transistor in the MOS chip U12 is connected to the central controller at the same time, the central controller can control the on/off of the first MOS transistor in the MOS chip U12 to control the first MOS transistor in the MOS chip U12 to convert the +5V power supply into a square wave signal, and output the square wave signal to the coil, the drain of the first MOS transistor in the MOS chip U12 is connected to the coil, the source of the second MOS transistor in the MOS chip U12 is connected to the current detection unit, the gate of the second MOS transistor in the MOS chip U12 is grounded, a resistor R146 is connected in series between the gate of the second MOS transistor in the MOS chip U12 and the ground, and the gate of the second MOS transistor in the MOS chip U12 is connected to the central controller at the same time, the drain electrode of the second MOS tube in the MOS tube chip U12 is connected with the coil, the on-off of the second MOS tube in the MOS tube chip U12 is controlled by the central control unit, and the coil is controlled to output a current signal to the current detection unit for current detection.
In this embodiment, the current detection unit and the voltage detection unit both use operational amplifiers, and the signal input end (non-inverting input end) of the voltage detection unit is connected to the coil, and the current signal and the voltage signal are amplified and then input to the central control unit.
In this embodiment, the coil is not shown, and the two connection points of PAD1 and PAD2 are used as the connection points of the coil in the figure.
In this embodiment, still be connected with the pilot lamp unit on the central control unit, the pilot lamp unit adopts LED, can instruct the utility model discloses an operating condition.
The utility model discloses a special circuit structure design has simplified circuit structure, has reduced the restriction for circuit design and product design, has reduced product cost.
Claims (6)
1. A simplified wireless charger is characterized in that: the wireless charger comprises a central control unit, a power input interface unit, a switch unit, a driving unit, a current detection unit, a voltage detection unit and a coil, wherein the power input interface is respectively connected with the central control unit, the switch unit and the driving unit, an input power supply supplies power to the central control unit, the switch unit and the driving unit, a control end of the switch unit is connected with a positive power supply, the switch unit is connected with the driving unit, the central control unit is connected with the driving unit, the coil is connected on the driving unit, data acquisition ends of the current detection unit and the voltage detection unit are respectively connected with the driving unit, and signal output ends of the current detection unit and the voltage detection unit are respectively connected with the central control unit.
2. The simplified wireless charger of claim 1, wherein: the central control unit adopts a small-sized single chip U6, and a +5V power supply is input by the power supply input interface unit and directly supplies power to the central control unit.
3. The simplified wireless charger of claim 1, wherein: the switch unit comprises a triode Q1 and a triode Q2, the triode Q1 is an NPN type transistor, the triode Q2 is a PNP type silicon triode, the bases of the triode Q1 and the triode Q2 are respectively connected with a +5V power supply, the collector of the triode Q1 is connected with the +5V power supply, the collector of the triode Q2 is grounded, the emitter of the triode Q1 is connected with the emitter of the triode Q2, a resistor R1 is connected between the emitter of the triode Q1 and the emitter of the triode Q2 in series, and the emitter of the triode Q1 and the emitter of the triode Q2 are respectively connected with the drive unit.
4. The simplified wireless charger of claim 3, wherein: the driving unit comprises two MOS chips which are respectively an MOS chip U11 and an MOS chip U12, wherein the source electrode of a first MOS tube in the MOS chip U11 is connected with a +5V power supply, the gate electrode of the first MOS tube in the MOS chip U11 is connected with the emitter electrode of a triode Q1, the drain electrode of the first MOS tube in the MOS chip U11 is connected with a coil, the source electrode of a second MOS tube in the MOS chip U11 is connected with a current detection unit, the gate electrode of the second MOS tube in the MOS chip U11 is connected with the emitter electrode of the triode Q2, the drain electrode of the second MOS tube in the MOS chip U11 is connected with the coil, the source electrode of the first MOS tube in the MOS chip U12 is connected with the +5V power supply, the gate electrode of the first MOS tube in the MOS chip U12 is connected with the +5V power supply, a resistor R147 is connected between the gate electrode of the first MOS tube in the MOS chip U12 and the +5V power supply, and the gate electrode of the first MOS chip U12 is simultaneously connected with a central controller, the drain electrode of the first MOS tube in the MOS tube chip U12 is connected with the coil, the source electrode of the second MOS tube in the MOS tube chip U12 is connected with the current detection unit, the grid electrode of the second MOS tube in the MOS tube chip U12 is grounded, a resistor R146 is connected between the grid electrode of the second MOS tube in the MOS tube chip U12 and the ground in series, the grid electrode of the second MOS tube in the MOS tube chip U12 is simultaneously connected with the central control unit, and the drain electrode of the second MOS tube in the MOS tube chip U12 is connected with the coil.
5. The simplified wireless charger of claim 1, wherein: the current detection unit and the voltage detection unit both adopt operational amplifiers, and the signal input end of the voltage detection unit is connected with the coil.
6. The simplified wireless charger of claim 1, wherein: the central control unit is also connected with an indicator light unit, and the indicator light unit adopts an LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922124149.1U CN210839011U (en) | 2019-12-02 | 2019-12-02 | Simplified wireless charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922124149.1U CN210839011U (en) | 2019-12-02 | 2019-12-02 | Simplified wireless charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210839011U true CN210839011U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922124149.1U Expired - Fee Related CN210839011U (en) | 2019-12-02 | 2019-12-02 | Simplified wireless charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210839011U (en) |
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2019
- 2019-12-02 CN CN201922124149.1U patent/CN210839011U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200623 |