CN204205648U - A kind of wireless charging circuit - Google Patents
A kind of wireless charging circuit Download PDFInfo
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- CN204205648U CN204205648U CN201420649997.9U CN201420649997U CN204205648U CN 204205648 U CN204205648 U CN 204205648U CN 201420649997 U CN201420649997 U CN 201420649997U CN 204205648 U CN204205648 U CN 204205648U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The utility model discloses a kind of wireless charging circuit, this wireless charging circuit comprises the primary side circuit of resonant inductance, the secondary side circuit of resonant inductance and control circuit.Wherein the primary side circuit of resonant inductance comprises: the first side resonant circuit of the first diode full bridge rectifier, high-frequency inverter circuit, resonant inductance.The secondary side circuit of resonant inductance comprises: the secondary side resonant circuit of resonant inductance L1, electron capacitance circuit, the second diode full bridge rectifier, rechargeable battery E.Control circuit comprises: the first voltage sensor, the second voltage sensor, AD conversion module circuit, DSP control circuit and PWM drive circuit.The utility model circuit structure is simple, is a variable electric capacity, according to different battery charge conditions, changes electron capacitance circuit equivalent the resonance frequency of circuit in real time, improve charge efficiency.
Description
Technical field
The utility model relates to wireless charging technical field, is specifically related to a kind of wireless charging circuit utilizing electron capacitance circuit.
Background technology
So-called wireless charging, namely when not having cable, being coupled by electromagnetic field or other material, realizing the wireless transmission of electric energy.Wireless charging utilizes physical " resonance " principle---the object energy high efficiency of transmission energy that two vibration frequencies are identical.Wirelessly transmitting electrical energy comprises: the wireless charging mode that coupling inductance formula, electromagnetic resonance and optical coupling these three kinds is common, and wherein electromagnetic resonance can reach higher efficiency, is widely applied to the every field of wireless charging industry.
From theory, wireless charging technology is to human-body safety without harm, and the resonance principle that wireless charging uses is magnetic resonance, only transmit between with the coil of same frequency resonance, and other devices cannot acceptance band, in addition, the magnetic field that uses of wireless charging technology is inherently harmless.
Electromagnetic resonance is in the improve of charge efficiency, and be an emphasis direction of domestic brainstrust research, the utility model compensate for the some shortcomings of this kind of method to a certain extent, improves the efficiency of wireless charging always.
Along with iPhone, iPad etc. rise rapidly the equipment that electricity is full of " hungering and thirst ", the demand of the breakthrough charging techniques such as research and development wireless charging improves day by day.Fujitsu says in portion statement: " this technology will for mobile phone set compact wireless charging function and simultaneously for multiple portable set charging is paved the way.During to multiple equipment charge, equipment relative to the position of charger without any restriction." therefore, wireless charging technology has and wide market prospects and using value.
Utility model content
The purpose of this utility model is the deficiency overcoming prior art existence, provides a kind of wireless charging circuit, can be applicable to battery of mobile phone, the vehicle-mounted lithium ion of electric automobile etc. and charge.
The utility model is achieved through the following technical solutions.
A kind of wireless charging circuit, it comprises: the primary side circuit of resonant inductance, the secondary side circuit of resonant inductance and control circuit.Wherein the primary side circuit of resonant inductance comprises: the first side resonant circuit of the first diode full bridge rectifier, high-frequency inverter circuit, resonant inductance.The secondary side circuit of resonant inductance comprises: the secondary side resonant circuit of resonant inductance, electron capacitance circuit, the second diode full bridge rectifier, rechargeable battery.Control circuit comprises: the first voltage sensor, the second voltage sensor, AD conversion module circuit, DSP control circuit and PWM drive circuit.
Input power AC produces direct voltage after the first diode full bridge rectifier, high-frequency ac voltage is produced again through high-frequency inverter circuit, pass through resonant inductance again, Energy Transfer is to secondary side, then follow the trail of resonance frequency through electron capacitance circuit, eventually pass the second diode full bridge rectifier and charge the battery.Control circuit is by the first voltage sensor and the second voltage sensor sampled voltage as input, and the action of the eight road drive singal control switch pipes that control circuit exports reaches the highest charge efficiency.
Further, the first diode rectifier circuit is made up of the first diode, the second diode, the 3rd diode and the 4th diode, and rectification circuit carries out rectification to civil power, and its output carries out voltage stabilizing and filtering through the first electric capacity.
Further, high-frequency inverter circuit is made up of an IGBT switching tube, the 2nd IGBT switching tube, the 3rd IGBT switching tube and the 4th IGBT switching tube.The collector electrode of the one IGBT switching tube, the collector electrode of the 2nd IGBT switching tube are connected with the anode of the first electric capacity, the emitter of the one IGBT switching tube is connected with the collector electrode of the 3rd IGBT switching tube, the emitter of the 2nd IGBT switching tube is connected with the collector electrode of the 4th IGBT switching tube, and the emitter of the 3rd IGBT switching tube, the emitter of the 4th IGBT switching tube are connected with the negative pole of the first electric capacity; Above-mentioned high-frequency inverter circuit carries out inversion to the voltage after rectification, produces the high-frequency alternating current of 100kHz.
Further, the first side resonant circuit of resonant inductance is composed in series by the first side of the 3rd electric capacity and resonant inductance, one end of first side resonant circuit is connected on the emitter of the first IGBT switching tube, and the other end of first side first resonant circuit is connected on the emitter of the 2nd IGBT switching tube; The first effluent of resonant inductance crosses the positive and negative high frequency alternating current replaced, energy to be delivered to the primary side of resonant inductance; The secondary side resonant circuit of resonant inductance is made up of the secondary side of resonant inductance and electron capacitance circuit connected in series.
Further, electron capacitance circuit is made up of the 5th IGBT switching tube, the 6th IGBT switching tube, the 7th IGBT switching tube, the 8th IGBT switching tube, the 5th diode, the 6th diode, the 7th diode, the 8th diode and the second electric capacity; Wherein the gate of the 5th IGBT switching tube, the 6th IGBT switching tube, the 7th IGBT switching tube and the 8th IGBT switching tube is extremely all connected to a road PWM drive circuit, the waveform of this four tunnels PWM drive circuit is identical between two, 5th IGBT switching tube is identical with the PWM waveform that the gate pole of the 8th IGBT switching tube is accessed, and the 6th IGBT switching tube is identical with the PWM waveform that the gate pole of the 7th IGBT switching tube is accessed; The collector electrode of the 5th IGBT switching tube, the collector electrode of the 6th IGBT switching tube are connected with the anode of the second electric capacity; The emitter of the 5th IGBT switching tube and the collector electrode pole of the 7th IGBT switching tube connect; The emitter of the 7th IGBT switching tube, the emitter of the 8th IGBT switching tube are connected with the negative terminal of the second electric capacity; The collector electrode of the 8th IGBT switching tube is connected with the emitter of the 6th IGBT switching tube; 5th diode, the 6th diode, the 7th diode and the equal inverse parallel of the 8th diode are at the two ends of the 5th IGBT switching tube, the 6th IGBT switching tube, the 7th IGBT switching tube and the 8th IGBT switching tube; The two ends of single line as electron capacitance circuit are respectively drawn from the emitter of the 5th IGBT switching tube and the emitter of the 6th IGBT switching tube.
Further, the second diode full bridge rectifier (the 9th diode, the tenth diode, the 11 diode and the 12 diode) carries out rectification to the voltage of the first resonant circuit secondary side, and export through the 4th electric capacity, the voltage obtained charges the battery.
Further, the both sides of the first voltage sensor and the second voltage sensor difference the first electric capacity in parallel and the 3rd electric capacity.The voltage that sampling obtains is as the input of AD conversion module circuit.Two summing circuits that AD conversion module circuit is made up of the operational amplifier that a precision is higher, by the voltage transitions that obtains of sampling to 0-3.3V, so that the signal transacting of dsp chip.
Further, DSP control circuit is made up of a dsp chip and peripheral circuit, the voltage that AD conversion module circuit exports produces eight tunnels without the PWM waveform driven through the sampling of DSP control circuit, eight tunnels without drive PWM waveform after PWM drive circuit, deliver to the gate pole of assigned I GBT switching tube respectively, control the break-make of above-mentioned IGBT switching tube.
Further, the drive circuit that eight tunnels that PWM drive circuit is made up of discrete component are identical, by the PWM waveform of eight above-mentioned tunnel different duty through above-mentioned No. eight drive circuits, obtain PWM1-PWM8, drive an IGBT switching tube to the 8th IGBT switching tube respectively.
During circuit working, first through the first diode rectifier circuit by alternating current AC rectification and filtering, then produce high frequency voltage through high-frequency inverter circuit, through primary side and the secondary side circuit of resonant inductance, high frequency voltage is delivered to secondary side.Under the effect of electron capacitance, the capacitance of optimum efficiency is found in the action by four switching tubes controlling electron capacitance circuit.Finally charged the battery by the second diode rectifier circuit again.
Compared with prior art, the utility model tool has the following advantages and technique effect:
Electron capacitance circuit equivalent, based on the principle of equal effects of electromagentic resonance and electron capacitance circuit, is a variable electric capacity, according to different battery charge conditions, changes the resonance frequency of circuit in real time, improve charge efficiency by the utility model.This circuit has not only saved Financial cost, and improves charge efficiency, has saved electric energy, has good market prospects and economic benefit.This utility model by extensive application to wireless charging fields such as charging mobile phone battery, the vehicle-mounted lithium ion chargings of electric automobile.Improving existing charge efficiency by improving wireless charging device, good economic benefit and social benefit can be produced.
Accompanying drawing explanation
Fig. 1 is the primary side circuit of the resonant inductance L1 of wireless charging circuit;
Fig. 2 is the secondary side circuit of the resonant inductance L1 of wireless charging circuit;
Fig. 3 is the control circuit of wireless charging circuit;
Fig. 4 is the system diagram of wireless charging circuit.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further; but enforcement of the present utility model and protection range are not limited thereto; if there is the not special content described in detail it is noted that following, be all that those skilled in the art can with reference to existing techniques in realizing.
Fig. 1 is the primary side circuit of the resonant inductance L1 of wireless charging circuit.
The primary side circuit of resonant inductance L1 comprises: the first side resonant circuit of the first diode full bridge rectifier, high-frequency inverter circuit, resonant inductance L1.First diode full bridge rectifier is made up of the first diode VD1, the second diode VD2, the 3rd diode VD3 and the 4th diode VD4, and rectification circuit carries out rectification to civil power, and its output carries out voltage stabilizing and filtering through the first electric capacity C1.
High-frequency inverter circuit is made up of an IGBT switching tube VT1, the 2nd IGBT switching tube VT2, the 3rd IGBT switching tube VT3 and the 4th IGBT switching tube VT4.The collector electrode of the one IGBT switching tube, the collector electrode of the 2nd IGBT switching tube are connected with the anode of the first electric capacity, the emitter of the one IGBT switching tube is connected with the collector electrode of the 3rd IGBT switching tube, the emitter of the 2nd IGBT switching tube is connected with the collector electrode of the 4th IGBT switching tube, and the emitter of the 3rd IGBT switching tube, the emitter of the 4th IGBT switching tube are connected with the negative pole of the first electric capacity; Above-mentioned high-frequency inverter circuit carries out inversion to the voltage after rectification, produces the high-frequency alternating current of 100kHz.
The first side resonant circuit of resonant inductance L1 is composed in series by the first side of the 3rd electric capacity C3 and resonance inductance L 1, one end of first side resonant circuit is connected on the emitter of the first IGBT switching tube, and the other end of first side first resonant circuit is connected on the emitter of the 2nd IGBT switching tube; The first effluent of resonant inductance crosses the positive and negative high frequency alternating current replaced, energy to be delivered to the primary side of resonant inductance; The secondary side resonant circuit of resonant inductance L1 is made up of the secondary side of resonant inductance and electron capacitance circuit connected in series.
Civil power is after the first diode rectifier circuit and the first capacitance voltage stabilizing, the voltage obtained is as the input of high-frequency inverter circuit, output after high frequency is as the input of the primary side of resonant circuit, and the terminal voltage of the first electric capacity C1 is as the input of the first voltage sensor.This part main circuit will complete rectification and the inversion of civil power, thus produces the alternating voltage of high frequency, and energy is delivered to secondary side by primary side.
Fig. 2 is the secondary side circuit of the resonant inductance L1 of wireless charging circuit.
The secondary side circuit of resonant inductance L1 comprises: the secondary side resonant circuit of resonant inductance L1, electron capacitance circuit, the second diode full bridge rectifier, rechargeable battery E.
Electron capacitance circuit is made up of the 5th IGBT switching tube VT5, the 6th IGBT switching tube VT6, the 7th IGBT switching tube VT7, the 8th IGBT switching tube VT8, the 5th diode VD5, the 6th diode VD6, the 7th diode VD7, the 8th diode VD8 and the second electric capacity C2; Wherein the gate of the 5th IGBT switching tube, the 6th IGBT switching tube, the 7th IGBT switching tube and the 8th IGBT switching tube is extremely all connected to a road PWM drive circuit, the waveform of this four tunnels PWM drive circuit is identical between two, 5th IGBT switching tube is identical with the PWM waveform that the gate pole of the 8th IGBT switching tube is accessed, and the 6th IGBT switching tube is identical with the PWM waveform that the gate pole of the 7th IGBT switching tube is accessed; The collector electrode of the 5th IGBT switching tube, the collector electrode of the 6th IGBT switching tube are connected with the anode of the second electric capacity; The emitter of the 5th IGBT switching tube and the collector electrode pole of the 7th IGBT switching tube connect; The emitter of the 7th IGBT switching tube, the emitter of the 8th IGBT switching tube are connected with the negative terminal of the second electric capacity; The collector electrode of the 8th IGBT switching tube is connected with the emitter of the 6th IGBT switching tube; 5th diode, the 6th diode, the 7th diode and the equal inverse parallel of the 8th diode are at the two ends of the 5th IGBT switching tube, the 6th IGBT switching tube, the 7th IGBT switching tube and the 8th IGBT switching tube; The two ends of single line as electron capacitance circuit are respectively drawn from the emitter of the 5th IGBT switching tube and the emitter of the 6th IGBT switching tube.
Second diode full bridge rectifier (the 9th diode VD1, the tenth diode VD2, the 11 diode VD3 and the 12 diode VD4) carries out rectification to the voltage of resonant circuit secondary side, export through the 4th electric capacity C4, the voltage obtained charges the battery.
The resonant circuit that charging circuit consists of resonant inductance secondary side and electron capacitance, receives the electric energy that primary side transmits.After the second diode full bridge rectifier and the 4th electric capacity, charge the battery, the terminal voltage of the 4th electric capacity C4 is as the input of the second voltage sensor.This part main circuit will complete the capacitance adjustment of electron capacitance circuit, thus finds suitable resonance frequency.
Fig. 3 is the control circuit of wireless charging circuit.
DSP control circuit can adopt existing techniques in realizing, be made up of a dsp chip and peripheral circuit, the voltage that AD conversion module circuit exports produces eight tunnels without the PWM waveform driven through the sampling of DSP control circuit, eight tunnels without drive PWM waveform after PWM drive circuit, deliver to the gate pole of assigned I GBT switching tube respectively, control the break-make of above-mentioned IGBT switching tube.
As an example, those skilled in the art can sample after the voltage that obtains carries out certain ratiometric conversion to the first voltage sensor and the second voltage sensor by DSP control circuit, and the numerical value obtained produces the PWM waveform of eight tunnel different duty.
The drive circuit that eight tunnels that PWM drive circuit is made up of discrete component are identical, by the PWM waveform of eight above-mentioned tunnel different duty through above-mentioned No. eight drive circuits, obtains PWM1-PWM8, drives an IGBT switching tube to the 8th IGBT switching tube respectively.
The output being input as the first voltage sensor and the second voltage sensor of control circuit, after the signal condition of AD conversion module, is input in DSP and processes.Output one tunnel of DSP is directly as the input of eight-path PWM driver module, and a road is input to eight-path PWM driver module after inverter.The output of eight-path PWM driver module is eight-path PWM signal, as the drive singal of each switching tube.
Fig. 4 is the system diagram of wireless charging circuit.Input power AC produces direct voltage after the first diode full bridge rectifier, high-frequency ac voltage is produced again through high-frequency inverter circuit, again by resonant inductance L1, Energy Transfer is to secondary side, then follow the trail of resonance frequency through electron capacitance circuit, eventually pass the second diode full bridge rectifier and charge the battery.Control circuit is by the first voltage sensor and the second voltage sensor sampled voltage as input, and the action of the eight road drive singal control switch pipes that control circuit exports reaches the highest charge efficiency.
As shown in the above, those skilled in the art, by foregoing circuit, utilize the resonance point of electron capacitance circuit real-time tracking charging circuit, can realize the maximal efficiency of charging.This utility model can widely apply the vehicle-mounted lithium ion charging of charging mobile phone battery, electric automobile and other wireless charging fields.Improving existing charge efficiency by improving wireless charging device, good economic benefit and social benefit can be produced.
Claims (9)
1. a wireless charging circuit, is characterized in that comprising: the primary side circuit of resonant inductance, the secondary side circuit of resonant inductance and control circuit; Wherein the primary side circuit of resonant inductance comprises: the first side resonant circuit of the first diode full bridge rectifier, high-frequency inverter circuit, resonant inductance; The secondary side circuit of resonant inductance comprises: the secondary side resonant circuit of resonant inductance, electron capacitance circuit, the second diode full bridge rectifier, rechargeable battery; Control circuit comprises: the first voltage sensor, the second voltage sensor, AD conversion module circuit, DSP control circuit and PWM drive circuit; Input power AC produces direct voltage by the first diode full bridge rectifier, high-frequency ac voltage is produced again through high-frequency inverter circuit, by the first side of resonant inductance, by the secondary side of Energy Transfer to resonant inductance, then follow the trail of resonance frequency through electron capacitance circuit, eventually pass the second diode full bridge rectifier and charge the battery; Control circuit is by the first voltage sensor and the second voltage sensor sampled voltage as input, and the action of the eight road drive singal control switch pipes that control circuit exports reaches the highest charge efficiency.
2. a kind of wireless charging circuit according to claim 1, it is characterized in that, first diode rectifier circuit is made up of the first diode, the second diode, the 3rd diode and the 4th diode, and rectification circuit carries out rectification to civil power, and its output carries out voltage stabilizing and filtering through the first electric capacity.
3. a kind of wireless charging circuit according to claim 1, is characterized in that, high-frequency inverter circuit is made up of an IGBT switching tube, the 2nd IGBT switching tube, the 3rd IGBT switching tube and the 4th IGBT switching tube; The collector electrode of the one IGBT switching tube, the collector electrode of the 2nd IGBT switching tube are connected with the anode of the first electric capacity, the emitter of the one IGBT switching tube is connected with the collector electrode of the 3rd IGBT switching tube, the emitter of the 2nd IGBT switching tube is connected with the collector electrode of the 4th IGBT switching tube, and the emitter of the 3rd IGBT switching tube, the emitter of the 4th IGBT switching tube are connected with the negative pole of the first electric capacity; Above-mentioned high-frequency inverter circuit carries out inversion to the voltage after rectification, produces the high-frequency alternating current of 100kHz.
4. a kind of wireless charging circuit according to claim 1, it is characterized in that, the first side resonant circuit of resonant inductance is composed in series by the first side of the 3rd electric capacity and resonant inductance, one end of first side resonant circuit is connected on the emitter of the first IGBT switching tube, and the other end of first side first resonant circuit is connected on the emitter of the 2nd IGBT switching tube; The first effluent of resonant inductance crosses the positive and negative high frequency alternating current replaced, energy to be delivered to the primary side of resonant inductance; The secondary side resonant circuit of resonant inductance is made up of the secondary side of resonant inductance and electron capacitance circuit connected in series.
5. a kind of wireless charging circuit according to claim 1, it is characterized in that, electron capacitance circuit is made up of the 5th IGBT switching tube, the 6th IGBT switching tube, the 7th IGBT switching tube, the 8th IGBT switching tube, the 5th diode, the 6th diode, the 7th diode, the 8th diode and the second electric capacity; Wherein the gate of the 5th IGBT switching tube, the 6th IGBT switching tube, the 7th IGBT switching tube and the 8th IGBT switching tube is extremely all connected to a road PWM drive circuit, the waveform of this four tunnels PWM drive circuit is identical between two, 5th IGBT switching tube is identical with the PWM waveform that the gate pole of the 8th IGBT switching tube is accessed, and the 6th IGBT switching tube is identical with the PWM waveform that the gate pole of the 7th IGBT switching tube is accessed; The collector electrode of the 5th IGBT switching tube, the collector electrode of the 6th IGBT switching tube are connected with the anode of the second electric capacity; The emitter of the 5th IGBT switching tube and the collector electrode pole of the 7th IGBT switching tube connect; The emitter of the 7th IGBT switching tube, the emitter of the 8th IGBT switching tube are connected with the negative terminal of the second electric capacity; The collector electrode of the 8th IGBT switching tube is connected with the emitter of the 6th IGBT switching tube; 5th diode, the 6th diode, the 7th diode and the equal inverse parallel of the 8th diode are at the two ends of the 5th IGBT switching tube, the 6th IGBT switching tube, the 7th IGBT switching tube and the 8th IGBT switching tube; The two ends of single line as electron capacitance circuit are respectively drawn from the emitter of the 5th IGBT switching tube and the emitter of the 6th IGBT switching tube.
6. a kind of wireless charging circuit according to claim 1, is characterized in that, the second diode full bridge rectifier carries out rectification to the voltage of resonant circuit secondary side, and export through the 4th electric capacity, the voltage obtained charges the battery.
7. a kind of wireless charging circuit according to claim 1, is characterized in that, the both sides of the first voltage sensor and the second voltage sensor difference the first electric capacity in parallel and the 3rd electric capacity; The voltage that sampling obtains is as the input of AD conversion module circuit; Two summing circuits that AD conversion module circuit is made up of operational amplifier, the voltage transitions obtained sampling is to 0-3.3V.
8. a kind of wireless charging circuit according to claim 1, it is characterized in that, DSP control circuit is made up of dsp chip and peripheral circuit, the voltage that AD conversion module circuit exports produces eight tunnels without the PWM waveform driven through the sampling of DSP control circuit, eight tunnels without drive PWM waveform after PWM drive circuit, deliver to the gate pole of assigned I GBT switching tube respectively, control the break-make of above-mentioned IGBT switching tube.
9. a kind of wireless charging circuit according to claim 1, it is characterized in that, the drive circuit that eight tunnels that PWM drive circuit is made up of discrete component are identical, by the PWM waveform of eight tunnel different duty through above-mentioned No. eight drive circuits, obtain PWM1-PWM8, drive an IGBT switching tube to the 8th IGBT switching tube respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420649997.9U CN204205648U (en) | 2014-10-31 | 2014-10-31 | A kind of wireless charging circuit |
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| CN201420649997.9U CN204205648U (en) | 2014-10-31 | 2014-10-31 | A kind of wireless charging circuit |
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| CN204205648U true CN204205648U (en) | 2015-03-11 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333067A (en) * | 2014-10-31 | 2015-02-04 | 华南理工大学 | Wireless charging circuit |
| CN106198634A (en) * | 2016-06-22 | 2016-12-07 | 天津大学 | A kind of self-clean type PH counter device utilizing radio magnetic wave signal to charge |
| CN106198629A (en) * | 2016-06-22 | 2016-12-07 | 天津大学 | A kind of self-clean type pH meter device with wireless charging function |
| CN106198633A (en) * | 2016-06-22 | 2016-12-07 | 天津大学 | A kind of self-clean type PH counter device with wireless charging module |
| CN106787084A (en) * | 2016-12-28 | 2017-05-31 | 中惠创智无线供电技术有限公司 | A kind of farad capacitor charging system |
-
2014
- 2014-10-31 CN CN201420649997.9U patent/CN204205648U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333067A (en) * | 2014-10-31 | 2015-02-04 | 华南理工大学 | Wireless charging circuit |
| CN106198634A (en) * | 2016-06-22 | 2016-12-07 | 天津大学 | A kind of self-clean type PH counter device utilizing radio magnetic wave signal to charge |
| CN106198629A (en) * | 2016-06-22 | 2016-12-07 | 天津大学 | A kind of self-clean type pH meter device with wireless charging function |
| CN106198633A (en) * | 2016-06-22 | 2016-12-07 | 天津大学 | A kind of self-clean type PH counter device with wireless charging module |
| CN106787084A (en) * | 2016-12-28 | 2017-05-31 | 中惠创智无线供电技术有限公司 | A kind of farad capacitor charging system |
| CN106787084B (en) * | 2016-12-28 | 2023-09-26 | 中惠创智（深圳）无线供电技术有限公司 | Farad capacitor charging system |
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