CN210404849U - Half-bridge resonance inversion type magnetic coupling resonance wireless charging power supply - Google Patents
Half-bridge resonance inversion type magnetic coupling resonance wireless charging power supply Download PDFInfo
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- CN210404849U CN210404849U CN201921320339.4U CN201921320339U CN210404849U CN 210404849 U CN210404849 U CN 210404849U CN 201921320339 U CN201921320339 U CN 201921320339U CN 210404849 U CN210404849 U CN 210404849U
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Abstract
The utility model relates to a wireless charging power supply technical field especially indicates a half-bridge resonance inversion type magnetic coupling resonant mode wireless charging power supply, and it includes transmitting terminal circuit and receiving terminal circuit, and transmitting terminal circuit includes EMI filter circuit, first rectification filter circuit, half-bridge LCC resonance inverter circuit, first auxiliary power supply, first signal conditioning circuit, control circuit and first communication circuit; the receiving end circuit mainly comprises a parallel resonance circuit, a second rectifying and filtering circuit, a second auxiliary power supply, a second signal conditioning circuit and a second communication circuit. The utility model combines the inversion topology and the resonance topology, thereby realizing the adjustment of input power and reducing the volume and weight of the transmitting terminal; the wireless communication of the transmitting end and the receiving end circuit is realized through the first communication circuit and the second communication circuit, the dynamic and static performance of the power supply is improved, and meanwhile, the receiving end circuit is guaranteed to have the advantages of being small in size, simple in structure and the like, and the wireless communication device has good market application value.
Description
Technical Field
The utility model belongs to the technical field of the wireless charging power supply technique and specifically relates to indicate a resonant wireless charging power supply of half-bridge resonance contravariant magnetic coupling.
Background
The Wireless Charging Technology (WCT), also called Wireless Power Transfer (WPT), is a Wireless Power Transfer (WPT) technology that uses electric field, magnetic field, microwave, laser, or other conductive media to realize wireless transmission of electric energy without traditional wire connection, and its non-contact charging features no wire limitation, no plugging, less danger, and the like. The wireless charging is an important way for realizing convenient and efficient utilization of energy, and has wide application prospects in special fields of electric vehicle charging, aviation spacecraft energy supply, portable mobile equipment charging, medical equipment charging, coal mine oil field exploitation, energy chemical engineering, underwater operation and the like.
The wireless charging technology can be mainly divided into an electromagnetic induction type, a magnetic coupling resonance type, an electric field coupling type and a radio wave type. The magnetic coupling resonance type wireless charging is a main research direction in the field of wireless charging due to the advantages of long transmission distance, large transmission power, small dependence on media, strong penetrability and the like, and the basic principle of the magnetic coupling resonance type wireless charging is that under the excitation of high-frequency alternating current with certain frequency, a transmitting end coil and a capacitor resonate to generate an alternating near magnetic field, and through electromagnetic coupling resonance, a receiving end coil and the capacitor convert magnetic energy into electric energy to be output to a rear-stage load, so that energy exchange is completed.
The magnetic coupling resonant wireless charging power circuit can be divided into a transmitting end circuit and a receiving end circuit. The transmitting-end inverter circuit is an important component of a magnetic coupling resonant wireless charging power supply, has the function of converting direct current into high-frequency alternating current required by a resonant coil to work, and is commonly used for inverter circuits of wireless charging systems, and mainly comprises topological structures such as an E-type inverter circuit, a D-type inverter circuit, a half-bridge inverter circuit, a full-bridge inverter circuit and the like. The medium and high power inverter circuits are multipurpose half-bridge inverter and full-bridge inverter circuits, and compared with a half-bridge inverter, the medium and high power inverter circuits have the advantages of few devices and simpler control.
The key of the high-efficiency transmission of the magnetic coupling resonant wireless charging power supply is that the system works in a resonant state, the designed coil resonator requires the frequency between the power supply and the resonator to be consistent, and the common resonant topologies mainly comprise four types: a transmitting end series resonance and a receiving end series resonance (SS); a transmitting end is in series resonance, and a receiving end is in parallel resonance (SP); transmitting end parallel resonance, receiving end series resonance (PS); the transmitting end is in parallel resonance, and the receiving end is in parallel resonance (PP).
At present, a resonance topology and a half-bridge inversion topology of the magnetic coupling resonance type wireless charging power supply are separated and independent from each other, a large-capacity resonance capacitor is needed, the volume and the weight of the power supply are increased, and application and popularization of half-bridge inversion in the wireless charging power supply are hindered. In power output regulation, a DC-DC converter is added in a receiving end circuit of the existing wireless charging power supply to control charging voltage. When the power level is increased, the size of the receiving-end circuit is sharply increased due to the presence of the inductor and the capacitor, which contradicts the demand for miniaturization of the receiving-end device.
SUMMERY OF THE UTILITY MODEL
The utility model provides a half-bridge resonance contravariant magnetic coupling resonant wireless charging power supply to prior art's problem, combines contravariant topology and resonance topology, provides a transmitting terminal half-bridge LCC resonance contravariant topology, regards symmetrical voltage-sharing electric capacity as resonance electric capacity, controls resonance voltage and electric current through regulation such as duty cycle, frequency to realize the regulation of input power, reduce transmitting terminal volume and weight; realize the wireless communication of transmitting terminal and receiving terminal circuit through first communication circuit and second communication circuit, the output voltage current data transmission of receiving terminal circuit is to first communication circuit with the second communication circuit, and first communication circuit handles in transmitting terminal main control chip with data transmission again to realize receiving terminal output current's closed-loop control, when improving power dynamic and static performance, guarantee that the receiving terminal circuit has advantages such as small, simple structure, good market using value has.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides a half-bridge resonance inversion type magnetic coupling resonant wireless charging power supply, including transmitting terminal circuit and receiving terminal circuit, transmitting terminal circuit includes EMI filter circuit, first rectification filter circuit, half-bridge LCC resonance inverter circuit, first auxiliary power supply, first signal conditioning circuit, control circuit and first communication circuit; the receiving end circuit mainly comprises a parallel resonance circuit, a second rectifying and filtering circuit, a second auxiliary power supply, a second signal conditioning circuit and a second communication circuit;
the input end of the EMI filter circuit is connected to a power grid and is used for filtering common-mode and differential-mode interference of the voltage of the power grid and inhibiting a power supply from emitting electromagnetic interference outwards;
the input end of the first rectifying and filtering circuit is connected to the output end of the EMI filtering circuit and used for converting the input alternating current power grid voltage into stable direct current voltage;
the input end of the half-bridge LCC resonant inverter circuit is connected to the output end of the first rectifying and filtering circuit and is used for inverting the direct-current voltage into high-frequency alternating-current voltage to excite the resonant coil and the resonant capacitor to generate a strong coupling magnetic field;
the parallel resonant circuit is used for generating receiving loop input alternating voltage through electromagnetic coupling resonance with a strong coupling magnetic field;
the input end of the second rectifying and filtering circuit is connected to the parallel resonance circuit and is used for converting the input alternating-current voltage into direct-current voltage and outputting the direct-current voltage to a load;
the first auxiliary power supply and the second auxiliary power supply are respectively used for supplying power to the transmitting end circuit and the receiving end circuit;
the first communication circuit transmits a control signal of a transmitting end to a receiving end, and the second communication circuit is used for transmitting voltage streaming data of the receiving end to the transmitting end;
the first signal conditioning circuit and the second signal conditioning circuit are respectively used for sampling and processing voltage and current signals of the transmitting end and the receiving end.
The half-bridge LCC resonant inverter circuit comprises a first capacitor CP1, a second capacitor CP2, a first switching tube VT1, a second switching tube VT2 and a transmitting coil LP, wherein one end of the first capacitor CP1 is connected with a collector of the first switching tube VT1, the other end of the first capacitor CP1 is connected with one end of the second capacitor CP2, an emitter of the first switching tube VT1 is connected with a collector of the second switching tube VT2, the other end of the second capacitor CP2 is connected with an emitter of the second switching tube VT2, and the transmitting coil LP is connected between the other end of the first capacitor CP1 and the emitter of the first switching tube VT 1.
The first communication circuit comprises a first communication chip PIC16F1828 and a first 2.4G communication module JF24D, wherein pins 13, 10, 11, 9, 12 and 17 of the first communication chip PIC16F1828 are respectively connected with pins 2, 3, 4, 5, 6 and 8 of a first 2.4G communication module JF24D, pin 1 of the first 2.4G communication module JF24D is connected with a 3.3V first auxiliary power supply, and pin 10 of the first 2.4G communication module JF24D is connected with the ground.
The second communication circuit comprises a second communication chip PIC16F1828 and a second 2.4G communication module JF24D, pins 13, 10, 11, 9, 12 and 17 of the second communication chip PIC16F1828 are respectively connected with pins 2, 3, 4, 5, 6 and 8 of the second 2.4G communication module JF24D, and pin 1 of the second 2.4G communication module JF24D is connected with a second auxiliary power supply of 3.3V and pin 10 is grounded.
Wherein the parallel resonant circuit comprises a receiving coil LS and a third capacitor CS; the receiving coil LS is connected in parallel with the third capacitor CS.
The first rectifying and filtering circuit comprises a rectifying bridge VD1, a first filtering inductor L1 and a first filtering capacitor C1, the output end of the rectifying bridge VD1 is connected to a first post-stage LC filter, and the first post-stage LC filter is formed by connecting the first filtering inductor L1 and the first filtering capacitor C1 in series.
The second rectifying and filtering circuit comprises a rectifying bridge VD2, a second filtering inductor L2 and a second filtering capacitor C2, the output end of the rectifying bridge VD2 is connected to a second post-stage LC filter, and the second post-stage LC filter is formed by connecting a second filtering inductor L2 and a second filtering capacitor C2 in series.
The utility model has the advantages that:
the utility model combines the inversion topology with the resonance topology, provides a transmitting terminal half-bridge LCC resonance inversion topology, takes the symmetrical voltage-sharing capacitor as the resonance capacitor, controls the resonance voltage and current through the adjustment of duty ratio, frequency and the like, thereby realizing the adjustment of input power and reducing the volume and weight of the transmitting terminal; realize the wireless communication of transmitting terminal and receiving terminal circuit through first communication circuit and second communication circuit, the output voltage current data transmission of receiving terminal circuit is to first communication circuit with the second communication circuit, and first communication circuit handles in transmitting terminal main control chip with data transmission again to realize receiving terminal output current's closed-loop control, when improving power dynamic and static performance, guarantee that the receiving terminal circuit has advantages such as small, simple structure, good market using value has.
Drawings
Fig. 1 is a schematic block diagram of a half-bridge resonant inverter type magnetic coupling resonant wireless charging power supply of the present invention.
Fig. 2 is the circuit diagram of the first rectifying and filtering circuit, the half-bridge LCC resonant inverter circuit, the parallel resonant circuit and the second rectifying and filtering circuit of the present invention.
Fig. 3 is a circuit diagram of the first communication circuit and the second communication circuit of the present invention.
Fig. 4 is a circuit diagram of the half-bridge LCC resonant inverter circuit of the present invention.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention will be described in detail with reference to the accompanying drawings.
A half-bridge resonant inversion type magnetic coupling resonant wireless charging power supply, as shown in fig. 1 to 4, comprises a transmitting end circuit and a receiving end circuit, wherein the transmitting end circuit comprises an EMI filter circuit, a first rectifying filter circuit, a half-bridge LCC resonant inversion circuit, a first auxiliary power supply, a first signal conditioning circuit, a control circuit and a first communication circuit; the receiving end circuit mainly comprises a parallel resonance circuit, a second rectifying and filtering circuit, a second auxiliary power supply, a second signal conditioning circuit and a second communication circuit;
the input end of the EMI filter circuit is connected to a power grid and is used for filtering common-mode and differential-mode interference of the voltage of the power grid and inhibiting a power supply from emitting electromagnetic interference outwards;
the input end of the first rectifying and filtering circuit is connected to the output end of the EMI filtering circuit and used for converting the input alternating current power grid voltage into stable direct current voltage;
the input end of the half-bridge LCC resonant inverter circuit is connected to the output end of the first rectifying and filtering circuit and is used for inverting the direct-current voltage into high-frequency alternating-current voltage to excite the resonant coil and the resonant capacitor to generate a strong coupling magnetic field;
the parallel resonant circuit is used for generating receiving loop input alternating voltage through electromagnetic coupling resonance with a strong coupling magnetic field;
the input end of the second rectifying and filtering circuit is connected to the parallel resonance circuit and is used for converting the input alternating-current voltage into direct-current voltage and outputting the direct-current voltage to a load;
the first auxiliary power supply and the second auxiliary power supply are respectively used for supplying power to the transmitting end circuit and the receiving end circuit;
the first communication circuit transmits a control signal of a transmitting end to a receiving end, and the second communication circuit is used for transmitting voltage streaming data of the receiving end to the transmitting end;
the first signal conditioning circuit and the second signal conditioning circuit are respectively used for sampling and processing voltage and current signals of the transmitting end and the receiving end.
The control circuit is used for controlling the work of the whole charging power supply, and comprises signal processing, protection early warning, power regulation and the like.
Specifically, the utility model discloses combine contravariant topology and resonance topology, propose a transmitting terminal half-bridge LCC resonance contravariant topology, regard symmetrical voltage-sharing electric capacity as resonance electric capacity, control resonance voltage and electric current through regulation such as duty cycle, frequency to realize the regulation of input power, reduce transmitting terminal volume and weight; realize the wireless communication of transmitting terminal and receiving terminal circuit through first communication circuit and second communication circuit, the output voltage current data transmission of receiving terminal circuit is to first communication circuit with the second communication circuit, and first communication circuit handles in transmitting terminal main control chip with data transmission again to realize receiving terminal output current's closed-loop control, when improving power dynamic and static performance, guarantee that the receiving terminal circuit has advantages such as small, simple structure, good market using value has.
The half-bridge resonant inverter type magnetic coupling resonant wireless charging power supply comprises a first capacitor CP1, a second capacitor CP2, a first switching tube VT1, a second switching tube VT2 and a transmitting coil LP, wherein one end of the first capacitor CP1 is connected with a collector of the first switching tube VT1, the other end of the first capacitor CP1 is connected with one end of the second capacitor CP2, an emitter of the first switching tube VT1 is connected with a collector of the second switching tube VT2, the other end of the second capacitor CP2 is connected with an emitter of the second switching tube VT2, and the transmitting coil LP is connected between the other end of the first capacitor CP1 and the emitter of the first switching tube VT 1.
In the half-bridge resonant inverter type magnetic coupling resonant wireless charging power supply according to this embodiment, the first communication circuit includes a first communication chip PIC16F1828 and a first 2.4G communication module JF24D, pins 13, 10, 11, 9, 12, and 17 of the first communication chip PIC16F1828 are respectively connected to pins 2, 3, 4, 5, 6, and 8 of the first 2.4G communication module JF24D, a pin 1 of the first 2.4G communication module JF24D is connected to a first auxiliary power supply of 3.3V, and a pin 10 of the first 2.4G communication module JF24D is grounded.
In the half-bridge resonant inverter type magnetic coupling resonant wireless charging power supply according to this embodiment, the second communication circuit includes a second communication chip PIC16F1828 and a second 2.4G communication module JF24D, pins 13, 10, 11, 9, 12, and 17 of the second communication chip PIC16F1828 are respectively connected to pins 2, 3, 4, 5, 6, and 8 of the second 2.4G communication module JF24D, and pin 1 of the second 2.4G communication module JF24D is connected to a second auxiliary power supply of 3.3V, and pin 10 is grounded.
In the half-bridge resonant inverter type magnetic coupling resonant wireless charging power supply of this embodiment, the parallel resonant circuit includes a receiving coil LS and a third capacitor CS; the receiving coil LS is connected in parallel with the third capacitor CS.
In the half-bridge resonant inverter type magnetic coupling resonant wireless charging power supply of this embodiment, the first rectifying and filtering circuit includes a rectifying bridge VD1, a first filter inductor L1, and a first filter capacitor C1, an output end of the rectifying bridge VD1 is connected to a first post-stage LC filter, and the first post-stage LC filter is formed by connecting a first filter inductor L1 and a first filter capacitor C1 in series.
In the half-bridge resonant inverter type magnetic coupling resonant wireless charging power supply of this embodiment, the second rectifying and filtering circuit includes a rectifying bridge VD2, a second filtering inductor L2, and a second filtering capacitor C2, an output end of the rectifying bridge VD2 is connected to a second post-stage LC filter, and the second post-stage LC filter is formed by connecting a second filtering inductor L2 and a second filtering capacitor C2 in series.
The basic working principle of the utility model is as follows:
the power grid inputs 220V alternating current to a transmitting end circuit, stable direct current voltage is output after the alternating current passes through a first rectification filter circuit, and then the stable direct current voltage is converted into high-frequency alternating current voltage through a half-bridge LCC resonant inverter circuit to generate resonant voltage and resonant current, so that a strong coupling magnetic field is generated in a near field of a transmitting coil; the parallel resonance circuit of the receiving end circuit generates receiving loop input voltage through electromagnetic coupling resonance, and the input alternating voltage outputs direct current voltage to a load after passing through the second rectifying and filtering circuit.
In order to facilitate the work mode analysis of the half-bridge LCC resonant inverter circuit, the front-stage AC-DC rectifying and filtering circuit is idealized to a 310V DC voltage source, and the load of the receiving-end circuit is reflected to the transmitting-end circuit, so that a simplified structure diagram of the half-bridge resonant inverter circuit shown in fig. 4 can be obtained, wherein the simplified structure diagram includes a 310V DC power supply Vg, a first switching tube VT1, a second switching tube VT2, a first capacitor CP1, a second capacitor CP2, a transmitting coil LP and a reflection impedance Zref.
According to the on-off condition of the switch tube and the current loop state, six modes can be divided.
Mode 1: the first switching tube VT1 is turned on, the second switching tube VT2 is turned off, and the current loop is: vg → VT1 → LP + Zref → CP2 → Vg and Vg → CP1 → CP2 → Vg;
mode 2: the first switching tube VT1 is turned off, the second switching tube VT2 is turned off, and the parasitic diode of the second switching tube VT2 continues current until the current of the resonant circuit is reduced to 0;
modality 3: the first switching tube VT1 is turned off, the second switching tube VT2 is turned off, and after the mode 2 is followed, the loop is open and has no current;
modality 4: the first switching tube VT1 is turned off, the second switching tube VT2 is turned on, and the current loop is: vg → CP1 → LP + Zref → VT2 → Vg and Vg → CP1 → CP2 → Vg;
mode 5: the first switching tube VT1 is turned off, the second switching tube VT2 is turned off, and the parasitic diode of the first switching tube VT1 continues current until the current of the resonant circuit is reduced to 0;
modality 6: the first switching tube VT1 is turned off, the second switching tube VT2 is turned off, and immediately after mode 5, the loop is open and no current flows.
It can be seen that the operating states of the modes 1, 2 and 3 are similar to the operating states of the modes 4, 5 and 6, respectively, and the operation process of the half-bridge resonant inverter circuit has symmetry similar to that of a full-bridge inverter. The inverter circuit drives the centers of the square waves to be complementary and symmetrical, and the duty ratio D is 0.5, so that only the completely symmetrical mode 1 and mode 4 are left in the working process of the inverter circuit, and the inverter circuit can be equivalent to a square wave power supply uH.
The first capacitor and the second capacitor have the same value, that is, the resonant capacitor CP 1-CP 2-CP 0, the total impedance of the LCC series-parallel resonant circuit is:
let the numerator and denominator of im (zp) be equal to zero, respectively, to obtain:
the molecule is zero:
the denominator is zero:
when the inverse square wave angular frequency w is equal to w1When the circuit is in series resonance, the inverter square wave power supply exciting coil LP generates resonance current. Thus, w is selected1As the resonant angular frequency of the inverter circuit.
Let CP be 2CP0, the half-bridge LCC resonant inverter circuit can be equivalent to a series resonant equivalent circuit. In order to ensure that the wireless charging system works in a magnetic resonance state, the resonant frequency of the transmitting coil and the receiving coil needs to be kept consistent, and then
Compared with other wireless communication modes, the 2.4GHz wireless communication has the obvious advantages of low power consumption, low cost, small size and the like. Therefore, bidirectional communication is established between the transmitting end and the receiving end of the wireless charging based on the 2.4GHz wireless transceiver module JF24D, as shown in the circuit diagram of the first communication circuit and the second communication circuit of fig. 3. The basic working process is as follows:
the second communication circuit transmits the output voltage and current data of the receiving end circuit to the first communication circuit, and the first communication circuit transmits the data to the transmitting end control circuit for processing, so that closed-loop control of the output current of the receiving end is realized, the dynamic and static performances of the power supply are improved, and stable charging current is ensured to be output.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention is disclosed in the preferred embodiment, it is not limited to the above description, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, but all the technical solutions of the present invention are within the scope of the present invention.
Claims (7)
1. The utility model provides a wireless charging power supply of half-bridge resonance inversion type magnetic coupling resonance mode which characterized in that: the power supply comprises a transmitting end circuit and a receiving end circuit, wherein the transmitting end circuit comprises an EMI filter circuit, a first rectification filter circuit, a half-bridge LCC resonance inverter circuit, a first auxiliary power supply, a first signal conditioning circuit, a control circuit and a first communication circuit; the receiving end circuit mainly comprises a parallel resonance circuit, a second rectifying and filtering circuit, a second auxiliary power supply, a second signal conditioning circuit and a second communication circuit;
the input end of the EMI filter circuit is connected to a power grid and is used for filtering common-mode and differential-mode interference of the voltage of the power grid and inhibiting a power supply from emitting electromagnetic interference outwards;
the input end of the first rectifying and filtering circuit is connected to the output end of the EMI filtering circuit and used for converting the input alternating current power grid voltage into stable direct current voltage;
the input end of the half-bridge LCC resonant inverter circuit is connected to the output end of the first rectifying and filtering circuit and is used for inverting the direct-current voltage into high-frequency alternating-current voltage and exciting to generate a strong coupling magnetic field;
the parallel resonant circuit is used for generating receiving loop input alternating voltage through electromagnetic coupling resonance with a strong coupling magnetic field;
the input end of the second rectifying and filtering circuit is connected to the parallel resonance circuit and is used for converting the input alternating-current voltage into direct-current voltage and outputting the direct-current voltage to a load;
the first auxiliary power supply and the second auxiliary power supply are respectively used for supplying power to the transmitting end circuit and the receiving end circuit;
the first communication circuit transmits a control signal of a transmitting end to a receiving end, and the second communication circuit is used for transmitting voltage streaming data of the receiving end to the transmitting end;
the first signal conditioning circuit and the second signal conditioning circuit are respectively used for sampling and processing voltage and current signals of the transmitting end and the receiving end.
2. The half-bridge resonant inverter type magnetic coupling resonant wireless charging power supply according to claim 1, characterized in that: the half-bridge LCC resonant inverter circuit comprises a first capacitor CP1, a second capacitor CP2, a first switching tube VT1, a second switching tube VT2 and a transmitting coil LP, wherein one end of the first capacitor CP1 is connected with a collector electrode of the first switching tube VT1, the other end of the first capacitor CP1 is connected with one end of the second capacitor CP2, an emitter electrode of the first switching tube VT1 is connected with a collector electrode of the second switching tube VT2, the other end of the second capacitor CP2 is connected with an emitter electrode of the second switching tube VT2, and the transmitting coil LP is connected between the other end of the first capacitor CP1 and the emitter electrode of the first switching tube VT 1.
3. The half-bridge resonant inverter type magnetic coupling resonant wireless charging power supply according to claim 1, characterized in that: the first communication circuit comprises a first communication chip PIC16F1828 and a first 2.4G communication module JF24D, wherein pins 13, 10, 11, 9, 12 and 17 of the first communication chip PIC16F1828 are respectively connected with pins 2, 3, 4, 5, 6 and 8 of a first 2.4G communication module JF24D, pin 1 of the first 2.4G communication module JF24D is connected with a first auxiliary power supply, and pin 10 of the first 2.4G communication module JF24D is connected with ground.
4. The half-bridge resonant inverter type magnetic coupling resonant wireless charging power supply according to claim 1, characterized in that: the second communication circuit comprises a second communication chip PIC16F1828 and a second 2.4G communication module JF24D, pins 13, 10, 11, 9, 12 and 17 of the second communication chip PIC16F1828 are respectively connected with pins 2, 3, 4, 5, 6 and 8 of a second 2.4G communication module JF24D, and pin 1 of the second 2.4G communication module JF24D is connected with a second auxiliary power supply and pin 10 is grounded.
5. The half-bridge resonant inverter type magnetic coupling resonant wireless charging power supply according to claim 1, characterized in that: the parallel resonant circuit comprises a receiving coil LS and a third capacitor CS; the receiving coil LS is connected in parallel with the third capacitor CS.
6. The half-bridge resonant inverter type magnetic coupling resonant wireless charging power supply according to claim 1, characterized in that: the first rectifying and filtering circuit comprises a rectifying bridge VD1, a first filtering inductor L1 and a first filtering capacitor C1, the output end of the rectifying bridge VD1 is connected to a first post-stage LC filter, and the first post-stage LC filter is formed by connecting the first filtering inductor L1 and the first filtering capacitor C1 in series.
7. The half-bridge resonant inverter type magnetic coupling resonant wireless charging power supply according to claim 1, characterized in that: the second rectifying and filtering circuit comprises a rectifying bridge VD2, a second filtering inductor L2 and a second filtering capacitor C2, the output end of the rectifying bridge VD2 is connected to a second post-stage LC filter, and the second post-stage LC filter is formed by connecting a second filtering inductor L2 and a second filtering capacitor C2 in series.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401267A (en) * | 2019-08-14 | 2019-11-01 | 东莞市钜大电子有限公司 | A kind of half-bridge resonance inverse type magnet coupled resonant type wireless charge power supply |
| WO2022121948A1 (en) * | 2020-12-08 | 2022-06-16 | 深圳市合元科技有限公司 | Aerosol generating apparatus |
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2019
- 2019-08-14 CN CN201921320339.4U patent/CN210404849U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401267A (en) * | 2019-08-14 | 2019-11-01 | 东莞市钜大电子有限公司 | A kind of half-bridge resonance inverse type magnet coupled resonant type wireless charge power supply |
| WO2022121948A1 (en) * | 2020-12-08 | 2022-06-16 | 深圳市合元科技有限公司 | Aerosol generating apparatus |
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