CN204809996U - Electric energy receiving terminal and non -contact power transfer device - Google Patents
Electric energy receiving terminal and non -contact power transfer device Download PDFInfo
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- CN204809996U CN204809996U CN201520484101.0U CN201520484101U CN204809996U CN 204809996 U CN204809996 U CN 204809996U CN 201520484101 U CN201520484101 U CN 201520484101U CN 204809996 U CN204809996 U CN 204809996U
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Abstract
The utility model discloses an electric energy receiving terminal and non -contact power transfer device utilizes overvoltage protection switch and excessive pressure control circuit to control the size of DC voltage to make it no longer than the presupposition voltage value. When the overvoltage protection switch can not effectively carry out overvoltage protection, further carry out overvoltage protection through fusing circuit and the protection circuit that switches on the circuit component to output voltage, through multistage protection scheme, can reduce the excessive pressure effectively or overflow the influence to electric energy receiving terminal circuit and outlet side electronic equipment. The technical scheme of the utility model fine solution the problem that overflows of voltage excessive pressure or the electric current in the wireless power transmission course, control strategy is simple, and is effectual.
Description
Technical field
The utility model relates to wireless charging field, in particular, relates to a kind of electric energy receiving terminal and non-contact electric energy transmission device.
Background technology
Transmitting non-contact electric energy technology (being also wireless power transmission technology) is widely used in electronics charging field due to advantages such as safe readies, the mode realizing wireless power transmission mainly contains magnetic inductive and magnetic resonance type two kinds of modes, usually conventional is magnetic resonance type, magnetic resonance type wireless electric energy transmission device mainly comprises electric energy transmitting terminal and electric energy receiving terminal, and both realize Energy Transfer by electromagentic resonance principle.
In general, transmitting terminal includes inverter, impedance matching circuit and transmitting coil, receiving terminal includes receiving coil, impedance matching circuit, rectification circuit and DC voltage converting circuit (DC-DC converter), the circuit block diagram of non-contact electric energy transmission device as shown in Figure 1, in Fig. 1, radiating portion only illustrates transmitting coil L
s, transmitting coil L
sreceive alternating current and produce alternating magnetic field, receiving coil L
dinduction alternating magnetic field produce high-frequency alternating voltage, afterwards, alternating voltage after rectifier circuit rectifies and filter capacitor filtering to obtain direct voltage V
rect, DC-DC converter receives direct voltage and is converted to suitable voltage signal supply electronic equipment.
Such as, but in delivery of electrical energy process, because the coupling of transmitting coil and receiving coil can change, the magnetic field energy in coupling enhancing suddenly or transmitting coil increases suddenly, and this will cause the direct voltage V after rectification circuit
rectexceed preset voltage value, excessive voltage can damage the DC-DC converter of rear class, or even the electronic equipment of load-side.
Utility model content
In view of this; the utility model proposes a kind of electric energy receiving terminal and non-contact electric energy transmission device; when detecting that the direct voltage after rectifying and wave-filtering or output voltage exceed preset voltage value; switch protecting circuit and part impedance matching circuit, receiving coil is utilized to form a loop; the energy of receiving coil is made not flow to the rectifier circuit of rear class, until direct voltage returns to be no more than preset voltage value.
According to a kind of electric energy receiving terminal of the present utility model, in order to receive the energy transmitted with the electric energy transmitting terminal of its isolation, it is characterized in that, described electric energy receiving terminal comprises:
Receiving coil, in order to the energy of the described electric energy transmitting terminal transmission that is coupled, to generate the ac voltage signal of high frequency;
Current rectifying and wave filtering circuit, receives the ac voltage signal of described high frequency to produce d. c. voltage signal;
Impedance matching network, is connected between described receiving coil and current rectifying and wave filtering circuit;
DC voltage converting circuit, receives described d. c. voltage signal to be converted to suitable output voltage supply electronic equipment;
Overvoltage protection switch, is connected between described impedance matching network and earth terminal;
Overvoltage control circuit, receives the first reference voltage signal of described d. c. voltage signal and sign preset voltage value, to produce the on off state that switch controlling signal controls described overvoltage protection switch, is no more than preset voltage value to make described d. c. voltage signal.
Further, described overvoltage control circuit comprises sample circuit and hysteresis comparator,
D. c. voltage signal described in described sampling circuit samples, to obtain sampled voltage signal;
Described hysteresis comparator receives described sampled voltage signal and described first reference voltage signal, exports described switch controlling signal,
When described sampled voltage signal is greater than the upper voltage limit value of described hysteresis comparator, described switch controlling signal is that effective status is to control described overvoltage protection switch conducting; When described sampled voltage signal is less than the lower voltage limit value of described hysteresis comparator, described switch controlling signal is that disarmed state turns off to control described overvoltage protection switch.
Further, described electric energy receiving terminal also comprises the first Zapping circuit and the first turning circuit,
Described first Zapping circuit is connected in series between described current rectifying and wave filtering circuit and DC voltage converting circuit, and the first end of described first turning circuit is connected to the points of common connection of described first Zapping circuit and DC voltage converting circuit, the second end earth terminal;
When described d. c. voltage signal reaches the conducting voltage of described first turning circuit, described first turning circuit conducting, described first Zapping circuit is fused.
Preferably, described first Zapping circuit is little valued resistor or fuse.
Preferably, described first turning circuit is the first Zener diode or transient voltage suppressor.
Further, described electric energy receiving terminal also comprises the second Zapping circuit and the second turning circuit,
Described second resistant series is connected between described DC voltage converting circuit and electronic equipment, and the first end of described second turning circuit is connected to the points of common connection of described second Zapping circuit and electronic equipment, the second end earth terminal;
When described d. c. voltage signal reaches the conducting voltage of described second turning circuit, described second turning circuit conducting, described second Zapping circuit is fused.
Preferably, described second Zapping circuit is little valued resistor or fuse.
Preferably, described second turning circuit is the first Zener diode or transient voltage suppressor.
Further, described electric energy receiving terminal also comprises second switch pipe and second switch control circuit,
Described second switch pipe is connected in series between described DC voltage converting circuit and electronic equipment;
Described second switch control circuit receives the output voltage signal of described DC voltage converting circuit and characterizes the second reference voltage signal of desired output voltage, to produce second switch control signal, described second switch control signal is in order to control the switch motion of described second switch pipe.
According to a kind of non-contact electric energy transmission device of the present utility model, comprise electric energy transmitting terminal and above-mentioned electric energy receiving terminal,
Described electric energy transmitting terminal includes the transmitting coil of isolating with described receiving coil, and described transmitting coil receives ac signal to produce alternating magnetic field;
Described electric energy receiving terminal responds to described alternating magnetic field to produce suitable output voltage supply electronic equipment.
By above-mentioned electric energy receiving terminal and non-contact electric energy transmission device, utilize overvoltage protection switch and overvoltage control circuit to control the size of direct voltage, be no more than preset voltage value to make it.When overvoltage protection switch effectively can not carry out overvoltage protection; protective circuit further by Zapping circuit and Zener diode composition carries out overvoltage protection to output voltage; by multi-stage protection scheme, the impact of overvoltage (or overcurrent) on electric energy receiving terminal circuit and outlet side electronic equipment effectively can be reduced.The technical solution of the utility model well solves the problem of the electric voltage over press (or overcurrent) in wireless power transmission process, and control program is simple, effective.
Accompanying drawing explanation
The basic circuit diagram of the non-contact electric energy transmission device shown in Fig. 1;
Figure 2 shows that the circuit block diagram of the first embodiment according to electric energy receiving terminal of the present utility model;
Figure 3 shows that the working waveform figure of Fig. 2 circuit;
Figure 4 shows that the circuit block diagram of the second embodiment according to electric energy receiving terminal of the present utility model;
Figure 5 shows that the circuit block diagram of the 3rd embodiment according to electric energy receiving terminal of the present utility model;
Figure 6 shows that the circuit block diagram of the 4th embodiment according to electric energy receiving terminal of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, several preferred embodiment of the present utility model is described in detail, but the utility model is not restricted to these embodiments.The utility model contain any make on marrow of the present utility model and scope substitute, amendment, equivalent method and scheme.To have the utility model to make the public and understand thoroughly, in following the utility model preferred embodiment, describe concrete details in detail, and do not have the description of these details also can understand the utility model completely for a person skilled in the art.
With reference to the circuit block diagram that Figure 2 shows that the first embodiment according to electric energy receiving terminal of the present utility model, as shown in Figure 2, described electric energy receiving terminal includes the receiving coil L of received energy
d, the impedance matching network, current rectifying and wave filtering circuit 201 and the DC voltage converting circuit 202 that are connected with described receiving coil successively, described current rectifying and wave filtering circuit receives the high-frequency alternating current that described receiving coil exports, to obtain d. c. voltage signal V
rect, DC voltage converting circuit 202 receives described d. c. voltage signal V
rect, be suitable output voltage V through voltage transitions
outsupply electronic equipment.Here, rectification circuit is for Half bridge rectifier, current rectifying and wave filtering circuit 201 rectifier diode and filter capacitor C, described rectifier diode is connected between described impedance matching network and DC voltage converting circuit, and the anode of diode connects described impedance matching network, negative electrode connects described DC voltage converting circuit; The first end of described filter capacitor C is connected to the negative electrode of described rectifier diode, the second end earth terminal.In the present embodiment, described impedance matching network is be connected in series in the first electric capacity C1 between receiving coil and rectification circuit and the second electric capacity C2, in described electric energy receiving terminal course of normal operation, equivalent capacity after described first electric capacity and the second capacitances in series and the equivalent inductance resonance of described receiving coil, and resonance frequency is consistent with system operating frequency.
In the present embodiment; described electric energy receiving terminal also comprises overvoltage protection switch S1 and overvoltage control circuit 203; overvoltage protection switch S1 is connected between described impedance matching network and earth terminal; first polar end of described overvoltage protection switch S1 connects the points of common connection of described first electric capacity C1 and the second electric capacity C2, the second polar end earth terminal.
Overvoltage control circuit 203 receives described d. c. voltage signal V
rectwith the first reference voltage signal V
ref1, to produce the on off state that switch controlling signal Vcon controls overvoltage protection switch S1, to make described d. c. voltage signal V
rectbe no more than preset voltage value.
Concrete, with reference to figure 2, described overvoltage control circuit 203 specifically comprises sample circuit and hysteresis comparator, and sample circuit is made up of divider resistance R3 and resistance R4, hysteresis comparator is made up of resistance R5, resistance R6 and comparator CMP, and divider resistance R3 and resistance R4 samples described d. c. voltage signal V
rect, to obtain sampled voltage signal V
rect1; The positive input of described hysteresis comparator receives described sampled voltage signal V
rect1, reverse input end receives the first reference voltage signal V characterizing described preset voltage value
ref1, export described switch controlling signal Vcon, described switch controlling signal Vcon controls overvoltage protection switch S1 conducting or shutoff.
With reference to the working waveform figure that Figure 3 shows that Fig. 2 circuit, set forth overvoltage protection operation principle of the present utility model below in conjunction with Fig. 2 and Fig. 3:
In the t1 moment, external condition changes, and causing d. c. voltage signal abnormal, constantly rising, in the t2 moment, when described sampled voltage signal V being detected
rect1when being greater than the upper voltage limit value of described hysteresis comparator; characterize d. c. voltage signal and exceed preset voltage value; at this moment; the switch controlling signal Vcon that comparator CMP exports is that effective status (such as shows for effective status with high level; low level is shown for disarmed state); overvoltage protection switch S1 conducting, receiving coil L
d, the first electric capacity C1, overvoltage protection switch S1 form a current circuit; at this moment; because the equivalent inductance of the first electric capacity C1 and receiving coil resonance can not occur; the energy of the transmission of receiving coil can reduce greatly; electric current in current circuit can not be very large; and the energy that receiving coil exports can not transfer to current rectifying and wave filtering circuit, d. c. voltage signal V
rectstart to decline, when dropping to the t3 moment, described sampled voltage signal V
rect1when being less than the lower voltage limit value of described hysteresis comparator, described switch controlling signal becomes disarmed state and controls overvoltage protection switch S1 shutoff.The energy of receiving coil transfers to current rectifying and wave filtering circuit again, if abnormal conditions also exist, then and d. c. voltage signal V
rectcontinue to rise, until when arriving the upper voltage limit value of hysteresis comparator, overvoltage protection switch S1 is switched on, and makes d. c. voltage signal V
rectdecline, so repeatedly, until to the t4 moment, circuit abnormality situation is removed, d. c. voltage signal V
rectdrop to and be no more than preset voltage value.
As can be seen from said process; when described electric energy receiving terminal coupling condition occurs abnormal; output voltage can be caused to raise; cause the infringement to DC voltage converting circuit or electronic equipment; therefore, the utility model is prevent the infringement to late-class circuit, carries out overvoltage protection control by the output voltage signal detecting current rectifying and wave filtering circuit to carrying out output voltage; preset voltage value is no more than by controlling d. c. voltage signal
Here; in order to ensure the fail safe of the first switch and second switch; the capacitance of the first electric capacity and the second electric capacity will select suitable ratio; make the resonance frequency of electric energy receiving terminal in described non-contact electric energy transmission device course of normal operation consistent with system operating frequency on the one hand; make when overvoltage protection switch conducting on the other hand; unlikely excessive or when overvoltage protection switch disconnects by the electric current of overvoltage protection switch; the both end voltage of overvoltage protection switch is unlikely excessive, in order to avoid cause the damage of switch tube.
When above-mentioned overvoltage protection switch occurs extremely to play protection d. c. voltage signal, need to arrange protective circuit further to ensure that late-class circuit is not damaged, be illustrated in figure 4 the circuit block diagram of the second embodiment according to electric energy receiving terminal of the present utility model; Circuit shown in Fig. 4 is supplementing further on the circuit shown in Fig. 2, in the present embodiment, described electric energy receiving terminal also comprises the first Zapping circuit and the first turning circuit, described first Zapping circuit is the fuse that little valued resistor or blow-out current value are identical, for little valued resistor R1 in Fig. 4; Described first turning circuit is Zener diode or transient voltage suppressor (TVS pipe), for the first Zener diode D1 in Fig. 4.As the d. c. voltage signal V after rectifying and wave-filtering
rectmore than the puncture voltage V of the first Zener diode D1
d1time, the pressure drop that resistance R1 bears is V
rect-V
d1.Design resistance R1 is little valued resistor, and now resistance R1 upper reaches super-high-current, resistance R1 will be fused, and effectively protects the DC voltage converter of rear class and the electronic equipment of output.
Further, when DC voltage converter occurs abnormal, output voltage V is caused
outmay raise, then need protection electronic equipment not damaged, be illustrated in figure 5 the circuit block diagram of the 3rd embodiment according to electric energy receiving terminal of the present utility model; Circuit described in Fig. 5 is supplementing further on the circuit base of Fig. 2 or Fig. 4, in the present embodiment, described electric energy receiving terminal also comprises the second Zapping circuit and the second turning circuit, described second Zapping circuit is the fuse that little valued resistor or blow-out current value are identical, for little valued resistor R2 in Fig. 5; Described second turning circuit is Zener diode or transient voltage suppressor (TVS pipe), for the second Zener diode D2 in Fig. 5.As the output voltage signal V that DC voltage converting circuit 202 exports
outmore than the puncture voltage V of the second Zener diode D2
d2time, the pressure drop that resistance R2 bears is V
out-V
d2.Design resistance R2 is little valued resistor, and now resistance R2 upper reaches super-high-current, makes resistance R2 be fused, effectively protect the electronic equipment of output.
Finally; for protecting electronic equipment in abnormal cases further; described electric energy receiving terminal also comprises the second switch pipe be connected between DC voltage converting circuit and electronic equipment; when aforementioned multistage overvoltage protection scheme all lost efficacy; then control second switch pipe to disconnect, to protect the safety of electronic equipment.Be illustrated in figure 6 the circuit block diagram of the 4th embodiment according to electric energy receiving terminal of the present utility model; Described electric energy receiving terminal also comprises second switch pipe S2 and second switch control circuit 601, and described second switch pipe S2 is connected in series between described DC voltage converting circuit 202 and electronic equipment; Described second switch control circuit 601 receives the output voltage signal of described DC voltage converting circuit and characterizes the second reference voltage signal of desired output voltage, to produce second switch control signal V
s2, described second switch control signal V
s2in order to control the switch motion of described second switch pipe S2.
Here, described second switch control circuit 601 can be implementation of the prior art, as realized by sample circuit and comparison circuit, when comparative result sign output voltage signal is greater than the second reference voltage signal, then second switch pipe S2 disconnects, and has effectively blocked the high voltage exported and has been connected to electronic equipment.
It is to be understood that, for above-mentioned Fig. 4 and electric energy transmitting terminal embodiment illustrated in fig. 5, not only can solve the problem of electric voltage over press, also can suppress the problem of overcurrent simultaneously, those skilled in the art are known, when the situation of electric energy receiving terminal circuit generation overcurrent or short circuit, little valued resistor R1 or R2 of series connection will bear excessive electric current and fuse, thus in protective circuit, components and parts are not damaged; For the embodiment shown in Fig. 6, the switch motion of second switch pipe also can be controlled further by the size detecting output current, when detecting that output current exceedes predetermined current value, controlling second switch pipe and turning off, causing damage to prevent the circuit devcie of big current to receiving terminal.
Known by the protection scheme of above-mentioned electric energy transmitting terminal; electric energy transmitting terminal of the present utility model by multi-stage protection scheme, can reduce the impact on electric energy receiving terminal circuit and outlet side electronic equipment of high voltage (or high electric current) that abnormal conditions occur effectively.When prime protection scheme lost efficacy; the protection scheme of rear class can cut off circuit in time; to break converter or electronic equipment to prevent high voltage; the technical solution of the utility model well solves the problem of the electric voltage over press (or overcurrent) in wireless power transmission process; control program is simple, effective.
Finally, the invention also discloses a kind of non-contact electric energy transmission device, comprise electric energy transmitting terminal and above-mentioned electric energy receiving terminal, described electric energy transmitting terminal includes the transmitting coil of isolating with described receiving coil, and described transmitting coil receives ac signal to produce alternating magnetic field; Described electric energy receiving terminal responds to described alternating magnetic field to produce suitable output voltage supply electronic equipment.In like manner; non-contact electric energy transmission device of the present utility model can available protecting DC voltage converting circuit and electronic equipment not broken by high voltage or high electric current; by the scheme of multi-stage protection, the impact of the abnormal high voltage occurred on receiving terminal circuit and outlet side electronic equipment effectively can be reduced.
Electric energy receiving terminal of the present utility model and non-contact electric energy transmission device, well solve the problem of electric voltage over press or overcurrent under abnormal conditions, and control program is simple, effective.
Carried out detailed description to according to the electric energy receiving terminal of preferred embodiment of the present utility model and non-contact electric energy transmission device above, those of ordinary skill in the art can know other technologies or structure and circuit layout, element etc. accordingly by inference and all can be applicable to described embodiment.
According to embodiment of the present utility model as described above, these embodiments do not have all details of detailed descriptionthe, do not limit the specific embodiment that this utility model is only described yet.Obviously, according to above description, can make many modifications and variations.This specification is chosen and is specifically described these embodiments, is to explain principle of the present utility model and practical application better, thus makes art technical staff that the utility model and the amendment on the utility model basis can be utilized well to use.The utility model is only subject to the restriction of claims and four corner and equivalent.
Claims (10)
1. an electric energy receiving terminal, in order to receive the energy transmitted with the electric energy transmitting terminal of its isolation, it is characterized in that, described electric energy receiving terminal comprises:
Receiving coil, in order to the energy of the described electric energy transmitting terminal transmission that is coupled, to generate the ac voltage signal of high frequency;
Current rectifying and wave filtering circuit, receives the ac voltage signal of described high frequency to produce d. c. voltage signal;
Impedance matching network, is connected between described receiving coil and current rectifying and wave filtering circuit;
DC voltage converting circuit, receives described d. c. voltage signal to be converted to suitable output voltage supply electronic equipment;
Overvoltage protection switch, is connected between described impedance matching network and earth terminal;
Overvoltage control circuit, receives the first reference voltage signal of described d. c. voltage signal and sign preset voltage value, to produce the on off state that switch controlling signal controls described overvoltage protection switch, is no more than preset voltage value to make described d. c. voltage signal.
2. electric energy receiving terminal according to claim 1, is characterized in that, described overvoltage control circuit comprises sample circuit and hysteresis comparator,
D. c. voltage signal described in described sampling circuit samples, to obtain sampled voltage signal;
Described hysteresis comparator receives described sampled voltage signal and described first reference voltage signal, exports described switch controlling signal,
When described sampled voltage signal is greater than the upper voltage limit value of described hysteresis comparator, described switch controlling signal is that effective status is to control described overvoltage protection switch conducting; When described sampled voltage signal is less than the lower voltage limit value of described hysteresis comparator, described switch controlling signal is that disarmed state turns off to control described overvoltage protection switch.
3. electric energy receiving terminal according to claim 1, is characterized in that, described electric energy receiving terminal also comprises the first Zapping circuit and the first turning circuit,
Described first Zapping circuit is connected in series between described current rectifying and wave filtering circuit and DC voltage converting circuit, and the first end of described first turning circuit is connected to the points of common connection of described first Zapping circuit and DC voltage converting circuit, the second end earth terminal;
When described d. c. voltage signal reaches the conducting voltage of described first turning circuit, described first turning circuit conducting, described first Zapping circuit is fused.
4. electric energy receiving terminal according to claim 3, is characterized in that, described first Zapping circuit is little valued resistor or fuse.
5. electric energy receiving terminal according to claim 3, is characterized in that, described first turning circuit is the first Zener diode or transient voltage suppressor.
6. the electric energy receiving terminal according to claim 1 or 3, is characterized in that, described electric energy receiving terminal also comprises the second Zapping circuit and the second turning circuit,
Described second resistant series is connected between described DC voltage converting circuit and electronic equipment, and the first end of described second turning circuit is connected to the points of common connection of described second Zapping circuit and electronic equipment, the second end earth terminal;
When described d. c. voltage signal reaches the conducting voltage of described second turning circuit, described second turning circuit conducting, described second Zapping circuit is fused.
7. electric energy receiving terminal according to claim 6, is characterized in that, described second Zapping circuit is little valued resistor or fuse.
8. electric energy receiving terminal according to claim 6, described second turning circuit is the first Zener diode or transient voltage suppressor.
9. electric energy receiving terminal according to claim 6, is characterized in that, described electric energy receiving terminal also comprises second switch pipe and second switch control circuit,
Described second switch pipe is connected in series between described DC voltage converting circuit and electronic equipment;
Described second switch control circuit receives the output voltage signal of described DC voltage converting circuit and characterizes the second reference voltage signal of desired output voltage, to produce second switch control signal, described second switch control signal is in order to control the switch motion of described second switch pipe.
10. a non-contact electric energy transmission device, comprises electric energy transmitting terminal and the arbitrary described electric energy receiving terminal of claim 1-9,
Described electric energy transmitting terminal includes the transmitting coil of isolating with described receiving coil, and described transmitting coil receives ac signal to produce alternating magnetic field;
Described electric energy receiving terminal responds to described alternating magnetic field to produce suitable output voltage supply electronic equipment.
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CN201520484101.0U CN204809996U (en) | 2015-07-02 | 2015-07-02 | Electric energy receiving terminal and non -contact power transfer device |
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CN201520484101.0U CN204809996U (en) | 2015-07-02 | 2015-07-02 | Electric energy receiving terminal and non -contact power transfer device |
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Cited By (6)
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CN106911193A (en) * | 2015-12-21 | 2017-06-30 | 宁波微鹅电子科技有限公司 | A kind of integrated circuit and integrated approach with wireless charging |
CN107733102A (en) * | 2016-08-22 | 2018-02-23 | 许继电源有限公司 | A kind of receiving terminal circuit for wireless charging and the vehicle using the circuit |
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US10153699B2 (en) | 2016-07-01 | 2018-12-11 | Ningbo Weie Electronics Technology Ltd. | Control method for power transmitter, power transmitter and noncontact power transfer apparatus |
CN109962501A (en) * | 2019-03-15 | 2019-07-02 | 中惠创智无线供电技术有限公司 | A kind of wireless receiving terminal protecting circuit |
CN112953033A (en) * | 2021-02-08 | 2021-06-11 | 江苏展芯半导体技术有限公司 | Wireless power transmission device based on non-contact hysteresis regulation and control method |
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CN106911193A (en) * | 2015-12-21 | 2017-06-30 | 宁波微鹅电子科技有限公司 | A kind of integrated circuit and integrated approach with wireless charging |
CN106911193B (en) * | 2015-12-21 | 2020-06-12 | 宁波微鹅电子科技有限公司 | Integrated circuit with wireless charging function and integration method |
US10153699B2 (en) | 2016-07-01 | 2018-12-11 | Ningbo Weie Electronics Technology Ltd. | Control method for power transmitter, power transmitter and noncontact power transfer apparatus |
CN107733102A (en) * | 2016-08-22 | 2018-02-23 | 许继电源有限公司 | A kind of receiving terminal circuit for wireless charging and the vehicle using the circuit |
CN107733102B (en) * | 2016-08-22 | 2019-12-06 | 许继电源有限公司 | Receiving end circuit for wireless charging and vehicle using same |
CN108574272A (en) * | 2017-03-08 | 2018-09-25 | 中惠创智无线供电技术有限公司 | A kind of protection circuit and wireless power supply system applied to wireless power supply system |
CN109962501A (en) * | 2019-03-15 | 2019-07-02 | 中惠创智无线供电技术有限公司 | A kind of wireless receiving terminal protecting circuit |
CN109962501B (en) * | 2019-03-15 | 2024-03-29 | 中惠创智(阜阳)技术有限公司 | Wireless receiving end protection circuit |
CN112953033A (en) * | 2021-02-08 | 2021-06-11 | 江苏展芯半导体技术有限公司 | Wireless power transmission device based on non-contact hysteresis regulation and control method |
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