CN210867293U - Novel wireless charging circuit based on UC2845 - Google Patents
Novel wireless charging circuit based on UC2845 Download PDFInfo
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- CN210867293U CN210867293U CN201921740568.1U CN201921740568U CN210867293U CN 210867293 U CN210867293 U CN 210867293U CN 201921740568 U CN201921740568 U CN 201921740568U CN 210867293 U CN210867293 U CN 210867293U
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The utility model discloses a novel wireless charging circuit based on UC2845, including rectification filter circuit, transmitting terminal circuit and receiving terminal circuit, rectification filter circuit is used for converting alternating current into direct current, and transmitting terminal circuit is used for converting the direct current of rectification filter circuit output into high frequency oscillation power supply, and receiving terminal circuit is used for converting the high frequency oscillation power supply of transmitting terminal circuit output into direct current; the research to the wireless field of charging of dozens of to hundreds of watts of medium and small power among the prior art is less, the immature problem of technique, the utility model provides a pair of novel wireless charging circuit based on UC2845 is applicable to the wireless charging of dozens of to hundreds of watts ranks of medium and small power.
Description
Technical Field
The utility model belongs to the wireless field of charging especially relates to a novel wireless charging circuit based on UC 2845.
Background
Wireless Power Transfer (WPT), as the name implies, refers to an energy Transfer method without direct electrical contact between a Power supply and an electrical load, which is realized by other energy Transfer media such as an electromagnetic field and an electromagnetic wave in a physical space without a Power transmission conductor. The development of the wireless power transmission technology can greatly change the mode of using electric energy in production and life of people, and people can use the electric energy more conveniently without the restraint of cables and wires. From the practical aspect, the wireless electric energy transmission technology can get rid of the inconvenience of a wired power supply mode, and flexible power supply of electric equipment in daily life is realized; from the perspective of safety, the wireless power transmission technology reduces potential safety hazards such as electric wire aging and electric sparks generated by contact friction, and avoids safety accidents caused by electric leakage, electric discharge and the like.
At present, wireless charging research is mainly focused on two directions, one is the field of mobile phone wireless chargers, the power level is generally 5-20W, the other is the field of electric vehicle wireless charging, the power level is several kilowatts to dozens or even hundreds of kilowatts, the research on the field of wireless charging with the medium and small power between the two is less, the technology is immature, and the field has wide application prospect in the future. If the unmanned aerial vehicle is widely applied in a large quantity, the wireless charging of medium and small power has wide application prospect in the field of wireless charging of the unmanned aerial vehicle; for example, in the field of electric bicycles, the electric bicycles have legal identities along with the national standard, and wired charging of the electric bicycles has great potential safety hazards, so that wireless charging of the electric bicycles in the future can also become a trend.
Disclosure of Invention
The research to the wireless field of charging of dozens of to hundreds of watts of medium and small power among the prior art is less, the immature problem of technique, the utility model provides a novel wireless charging circuit based on UC2845 is applicable to the wireless charging of dozens of to hundreds of watts ranks of medium and small power.
The utility model discloses a solve above-mentioned technical problem, adopt following technical scheme:
a novel wireless charging circuit based on UC2845 comprises a rectification filter circuit, a transmitting end circuit and a receiving end circuit;
the rectification filter circuit is used for converting input alternating current into direct current;
the transmitting end circuit comprises a main power circuit and a control circuit and is used for converting direct current output by the rectifying and filtering circuit into a high-frequency oscillation power supply;
the main power circuit comprises a capacitor C2, a resistor R2, a diode D5, a coil 1, a MOS tube Q1 and a current sampling resistor R8; the capacitor C2, the resistor R2 and the diode D5 form an absorption circuit, the input end of the absorption circuit is connected with the output end of the rectification filter circuit, the output end of the absorption circuit is connected with the coil 1, and the coil 1 is a primary coil; the MOS tube Q1 is used for switching, and the current sampling resistor R8 is used for sampling a current signal and converting the current signal into a voltage signal;
the control circuit comprises a UC2845 chip, a resistor R1, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a diode D6 and a coil 2; the 1 foot of the UC2845 chip is the output end of the internal operational amplifier and is grounded through a capacitor C6; the 2 feet of the UC2845 chip are grounded through a resistor R3 to form a feedback-free circuit; a 3 pin of the UC2845 chip, R8, R6 and C7 form a current sampling circuit, the 3 pin is a current monitoring pin, a voltage signal output by a resistor R8 is input into the 3 pin through a filter circuit formed by the resistor R6 and a capacitor C7, and the voltage signal is used for overcurrent or short-circuit protection; the UC2845 chip 4 pins and 8 pins, the C4 pin, the R4 pin and the C5 pin form an oscillation circuit, the resistor R4 pin, the capacitor C5 pin and the UC2845 chip 4 pins form an oscillation network, the oscillation network is used for enabling the UC2845 chip to generate PWM waves, and the UC2845 chip 8 pin is a 5V reference voltage output end and is used for providing an oscillation voltage source for the 4 pins; the 5 pin of the UC2845 chip is grounded; the UC2845 chip pin 6 is a PWM output pin, and forms an MOS tube driving circuit with R5 and R7; one end of the resistor R1 is connected with the output end of the rectifying and filtering circuit, the other end of the resistor R1 is connected with a 7-pin VCC of the UC2845 chip and is used for providing a starting voltage for the 7-pin VCC of the UC2845 chip and limiting the starting current, and the diode D6, the capacitor C3 and the coil 2 form a direct-current voltage stabilizing circuit and are used for supplying power to the started UC2845 chip;
the receiving end circuit comprises more than one receiving end, and the receiving end is used for converting the high-frequency oscillation power supply output by the transmitting end circuit into direct current;
the receiving end comprises a secondary coil, a rectifier diode, a first filter capacitor, a BUCK circuit, a second filter capacitor and a resistor R0, the rectifier diode and the first filter capacitor form a half-wave rectification filter circuit, the input end is connected with the secondary coil, the output end is connected with the input end of the BUCK circuit, and the output end of the BUCK circuit is connected with the input end of the filter circuit formed by the second filter capacitor and the resistor R0.
It is right to the utility model discloses technical scheme's further improvement, rectifier filter circuit includes diode D1, diode D2, diode D3, diode D4 and filter capacitor C1, and diode D1, diode D2, diode D3 and diode D4 are connected and are single-phase bridge rectifier circuit, and filter capacitor C1 is connected to the output. The rectification filter circuit consists of four diodes and a filter capacitor, and can convert 220V alternating current of the input commercial power into direct current which is used as direct current input of a subsequent circuit.
The technical proposal of the utility model is further improved, the receiving end circuit comprises a first receiving end, a second receiving end and a third receiving end; the receiving end I comprises a coil 3, a rectifying diode D7, a filter capacitor C8, a BUCK circuit, a filter capacitor C9 and a resistor R0; the rectifier diode D7 and the filter capacitor C8 form a half-wave rectification filter circuit, the input end of the half-wave rectification filter circuit is connected with the coil 3, the output end of the half-wave rectification filter circuit is connected with the input end of the BUCK circuit, and the output end of the BUCK circuit is connected with the input end of the filter circuit formed by the filter capacitor C9 and the resistor R0; the second receiving terminal comprises a coil 4, a rectifier diode D8, a filter capacitor C10, a BUCK circuit, a filter capacitor C11 and a resistor R0; the rectifier diode D8 and the filter capacitor C10 form a half-wave rectification filter circuit, the input end of the half-wave rectification filter circuit is connected with the coil 4, the output end of the half-wave rectification filter circuit is connected with the input end of the BUCK circuit, and the output end of the BUCK circuit is connected with the input end of the filter circuit formed by the filter capacitor C11 and the resistor R0; the third receiving terminal comprises a coil 5, a rectifier diode D9, a filter capacitor C12, a BUCK circuit, a filter capacitor C13 and a resistor R0; the rectifier diode D9 and the filter capacitor C12 form a half-wave rectification filter circuit, the input end of the half-wave rectification filter circuit is connected with the coil 5, the output end of the half-wave rectification filter circuit is connected with the input end of the BUCK circuit, and the output end of the BUCK circuit is connected with the input end of the filter circuit formed by the filter capacitor C13 and the resistor R0; the coil 3, the coil 4 and the coil 5 are secondary coils. Three receiving terminals are arranged, and one-to-three wireless charging can be achieved.
Compared with the prior art, the utility model has the technical effects that:
1. the circuit designs based on UC2845 chip, is applicable to the wireless charging of the tens to hundreds of watts rank of medium and small power.
2. The circuit, derive from flyback circuit, circuit structure is simple, need not complicated control, has reduced the degree of difficulty of extensive manufacturing and use, simultaneously, the utility model discloses well whole control circuit is with the UC2845 chip as the core, and the UC2845 chip is current mode PWM controller, and the multi-purpose is used for flyback power field, is a very ripe and wide-spread use chip of a section, excellent performance.
3. The circuit, the device that uses are conventional device, low cost to the core control chip UC2845 of this circuit is the example, and its cost only has 1 ~ 2 yuan, and in addition other components and parts, it also has only tens yuan to expect the batch cost, is suitable for carrying out large tracts of land commercial popularization.
4. The circuit sets up more than one receiving terminal, can realize "one to many" charging, and a charging device can satisfy many consumer's wireless charging simultaneously promptly.
5. The circuit, owing to receive factor influences such as coil interval, lateral deviation, the voltage that the receiving terminal was received is unstable, leads to output voltage also unstable, and the BUCK chopper circuit that the BUCK circuit is known in the art can change this unstable DC voltage into stable DC output voltage.
Drawings
Fig. 1 is an overall structure diagram of the embodiment of the present invention.
Fig. 2 is a circuit diagram of a circuit rectifying and filtering circuit, a transmitting end circuit and a receiving end circuit according to an embodiment of the present invention.
Fig. 3 is a circuit diagram of a BUCK circuit in the first receiving end according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 and 2, a novel wireless charging circuit based on UC2845 includes a rectifying and filtering circuit 1, a transmitting end circuit 2, and a receiving end circuit 3; the receiving end circuit 3 comprises more than one receiving end, and the receiving end is used for converting the high-frequency oscillation power supply output by the transmitting end circuit into direct current;
the rectifying and filtering circuit 1 comprises a diode D1, a diode D2, a diode D3, a diode D4 and a filtering capacitor C1, wherein a diode D1, a diode D2, a diode D3 and a diode D4 are connected to form a single-phase bridge rectifying circuit, and the output end of the single-phase bridge rectifying circuit is connected with a filtering capacitor C1;
the transmitting-end circuit 2 includes a main power circuit and a control circuit;
the main power circuit comprises a capacitor C2, a resistor R2, a diode D5, a coil 1, a MOS tube Q1 and a current sampling resistor R8;
the capacitor C2, the resistor R2 and the diode D5 form an absorption circuit, the input end of the absorption circuit is connected with the output end of the rectification filter circuit, the output end of the absorption circuit is connected with the coil 1, and the coil 1 is a primary coil;
the MOS tube Q1 is used for switching, and the current sampling resistor R8 is used for sampling a current signal and converting the current signal into a voltage signal;
the control circuit comprises a UC2845 chip, a resistor R1, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a diode D6 and a coil 2;
a pin 1 of the UC2845 chip is the output end of the internal operational amplifier and is grounded through a capacitor C6;
the 2 feet of the UC2845 chip are grounded through a resistor R3 to form a feedback-free circuit;
a current sampling circuit is formed by a pin 3 of the UC2845 chip, R8, R6 and C7, the pin 3 is a current monitoring pin, a voltage signal output by a resistor R8 is input into the pin 3 through a filter circuit formed by the resistor R6 and a capacitor C7, and the pin is used for overcurrent or short-circuit protection;
a UC2845 chip pin 4 and pin 8 form an oscillating circuit with a C4 pin, a R4 pin and a C5 pin, a resistor R4, a capacitor C5 and the UC2845 chip pin 4 form an oscillating network for enabling the UC2845 chip to generate PWM waves, and the UC2845 chip pin 8 is a 5V reference voltage output end for providing an oscillating voltage source for the pin 4;
the 5 pin of the UC2845 chip is grounded;
a 6 pin of the UC2845 chip is a PWM output pin, and forms an MOS tube driving circuit with R5 and R7;
one end of the resistor R1 is connected with the output end of the rectifying and filtering circuit, the other end of the resistor R1 is connected with a 7-pin VCC of the UC2845 chip and is used for providing a starting voltage for the 7-pin VCC of the UC2845 chip and limiting the starting current, and the diode D6, the capacitor C3 and the coil 2 form a direct-current voltage stabilizing circuit and are used for supplying power to the started UC2845 chip;
the circuit is open-loop controlled, directly outputs PWM waves with duty ratio of 50%, does not need the pin, and is grounded through a resistor R3; the voltage sampled by R8 is input into 3 pins through a filter circuit consisting of R6 and C7, so that the 3 pins can monitor the current state in the circuit, and enter an intermittent working state when overcurrent or short circuit occurs, thereby realizing overcurrent or short circuit protection.
The receiving end circuit 3 in the present embodiment includes a first receiving end, a second receiving end and a third receiving end;
the receiving end I comprises a coil 3, a rectifying diode D7, a filter capacitor C8, a BUCK circuit, a filter capacitor C9 and a resistor R0; the rectifier diode D7 and the filter capacitor C8 form a half-wave rectification filter circuit, the input end of the half-wave rectification filter circuit is connected with the coil 3, the output end of the half-wave rectification filter circuit is connected with the input end of the BUCK circuit, and the output end of the BUCK circuit is connected with the input end of the filter circuit formed by the filter capacitor C9 and the resistor R0;
the second receiving terminal comprises a coil 4, a rectifier diode D8, a filter capacitor C10, a BUCK circuit, a filter capacitor C11 and a resistor R0; the rectifier diode D8 and the filter capacitor C10 form a half-wave rectification filter circuit, the input end of the half-wave rectification filter circuit is connected with the coil 4, the output end of the half-wave rectification filter circuit is connected with the input end of the BUCK circuit, and the output end of the BUCK circuit is connected with the input end of the filter circuit formed by the filter capacitor C11 and the resistor R0;
the third receiving end comprises a coil 5, a rectifier diode D9, a filter capacitor C12, a BUCK circuit, a filter capacitor C13 and a resistor R0; the rectifier diode D9 and the filter capacitor C12 form a half-wave rectification filter circuit, the input end of the half-wave rectification filter circuit is connected with the coil 5, the output end of the half-wave rectification filter circuit is connected with the input end of the BUCK circuit, and the output end of the BUCK circuit is connected with the input end of the filter circuit formed by the filter capacitor C13 and the resistor R0;
the coil 3, the coil 4 and the coil 5 are secondary coils;
as shown in fig. 3, the input end of the BUCK circuit is connected to a rectifier diode D7 and a filter capacitor C8 to form a half-wave rectification filter circuit, and the output end of the BUCK circuit is connected to the input end of a filter circuit formed by a filter capacitor C9 and a resistor R0, where the BUCK circuit used in the first receiving end of this embodiment is a BUCK chopper circuit known in the art, and due to the influence of factors such as coil spacing and lateral offset, the voltage received by the receiving end is unstable, which results in unstable output voltage, and the BUCK circuit functions to convert the unstable dc voltage into stable dc output voltage;
in this embodiment, the BUCK circuits in the second receiving end and the third receiving end have the same structure as the BUCK circuit used in the first receiving end.
This embodiment a during novel wireless charging circuit uses based on UC2845, with rectification filter circuit and transmitting terminal circuit setting in a wireless charging device, with commercial power 220V alternating current access rectification filter circuit, the power input end access receiving terminal circuit of the consumer (for example unmanned aerial vehicle, electric bicycle etc.) that need carry on that medium and small power is tens to hundreds of watts wireless charges specifically is the output of connecting the filter circuit in the receiving terminal circuit to usable this wireless charging device carries out wireless charging to these consumers.
Claims (3)
1. The utility model provides a novel wireless charging circuit based on UC2845 which characterized in that: the device comprises a rectification filter circuit (1), a transmitting end circuit (2) and a receiving end circuit (3);
the rectification filter circuit (1) is used for converting input alternating current into direct current;
the transmitting end circuit (2) comprises a main power circuit and a control circuit and is used for converting direct current output by the rectifying and filtering circuit into a high-frequency oscillation power supply;
the main power circuit comprises a capacitor C2, a resistor R2, a diode D5, a coil 1, a MOS tube Q1 and a current sampling resistor R8; the capacitor C2, the resistor R2 and the diode D5 form an absorption circuit, the input end of the absorption circuit is connected with the output end of the rectification filter circuit, the output end of the absorption circuit is connected with the coil 1, and the coil 1 is a primary coil; the MOS tube Q1 is used for switching, and the current sampling resistor R8 is used for sampling a current signal and converting the current signal into a voltage signal;
the control circuit comprises a UC2845 chip, a resistor R1, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a diode D6 and a coil 2; the 1 foot of the UC2845 chip is the output end of the internal operational amplifier and is grounded through a capacitor C6; the 2 feet of the UC2845 chip are grounded through a resistor R3 to form a feedback-free circuit; a 3 pin of the UC2845 chip, R8, R6 and C7 form a current sampling circuit, the 3 pin is a current monitoring pin, a voltage signal output by a resistor R8 is input into the 3 pin through a filter circuit formed by the resistor R6 and a capacitor C7, and the voltage signal is used for overcurrent or short-circuit protection; the UC2845 chip 4 pins and 8 pins, the C4 pin, the R4 pin and the C5 pin form an oscillation circuit, the resistor R4 pin, the capacitor C5 pin and the UC2845 chip 4 pins form an oscillation network, the oscillation network is used for enabling the UC2845 chip to generate PWM waves, and the UC2845 chip 8 pin is a 5V reference voltage output end and is used for providing an oscillation voltage source for the 4 pins; the 5 pin of the UC2845 chip is grounded; the UC2845 chip pin 6 is a PWM output pin, and forms an MOS tube driving circuit with R5 and R7; one end of the resistor R1 is connected with the output end of the rectifying and filtering circuit, the other end of the resistor R1 is connected with a 7-pin VCC of the UC2845 chip and is used for providing a starting voltage for the 7-pin VCC of the UC2845 chip and limiting the starting current, and the diode D6, the capacitor C3 and the coil 2 form a direct-current voltage stabilizing circuit and are used for supplying power to the started UC2845 chip;
the receiving end circuit (3) comprises more than one receiving end, and the receiving end is used for converting the high-frequency oscillation power supply output by the transmitting end circuit into direct current;
the receiving end comprises a secondary coil, a rectifier diode, a first filter capacitor, a BUCK circuit, a second filter capacitor and a resistor R0, the rectifier diode and the first filter capacitor form a half-wave rectification filter circuit, the input end is connected with the secondary coil, the output end is connected with the input end of the BUCK circuit, and the output end of the BUCK circuit is connected with the input end of the filter circuit formed by the second filter capacitor and the resistor R0.
2. The new UC 2845-based wireless charging circuit as claimed in claim 1, wherein: the rectifying and filtering circuit (1) comprises a diode D1, a diode D2, a diode D3, a diode D4 and a filtering capacitor C1, wherein a diode D1, a diode D2, a diode D3 and a diode D4 are connected to form a single-phase bridge type rectifying circuit, and the output end of the single-phase bridge type rectifying and filtering circuit is connected with a filtering capacitor C1.
3. The new UC 2845-based wireless charging circuit as claimed in claim 1, wherein: the receiving end circuit (3) comprises a first receiving end, a second receiving end and a third receiving end;
the receiving end I comprises a coil 3, a rectifying diode D7, a filter capacitor C8, a BUCK circuit, a filter capacitor C9 and a resistor R0; the rectifier diode D7 and the filter capacitor C8 form a half-wave rectification filter circuit, the input end of the half-wave rectification filter circuit is connected with the coil 3, the output end of the half-wave rectification filter circuit is connected with the input end of the BUCK circuit, and the output end of the BUCK circuit is connected with the input end of the filter circuit formed by the filter capacitor C9 and the resistor R0;
the second receiving terminal comprises a coil 4, a rectifier diode D8, a filter capacitor C10, a BUCK circuit, a filter capacitor C11 and a resistor R0; the rectifier diode D8 and the filter capacitor C10 form a half-wave rectification filter circuit, the input end of the half-wave rectification filter circuit is connected with the coil 4, the output end of the half-wave rectification filter circuit is connected with the input end of the BUCK circuit, and the output end of the BUCK circuit is connected with the input end of the filter circuit formed by the filter capacitor C11 and the resistor R0;
the third receiving terminal comprises a coil 5, a rectifier diode D9, a filter capacitor C12, a BUCK circuit, a filter capacitor C13 and a resistor R0; the rectifier diode D9 and the filter capacitor C12 form a half-wave rectification filter circuit, the input end of the half-wave rectification filter circuit is connected with the coil 5, the output end of the half-wave rectification filter circuit is connected with the input end of the BUCK circuit, and the output end of the BUCK circuit is connected with the input end of the filter circuit formed by the filter capacitor C13 and the resistor R0;
the coil 3, the coil 4 and the coil 5 are secondary coils.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921740568.1U CN210867293U (en) | 2019-10-17 | 2019-10-17 | Novel wireless charging circuit based on UC2845 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921740568.1U CN210867293U (en) | 2019-10-17 | 2019-10-17 | Novel wireless charging circuit based on UC2845 |
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| CN210867293U true CN210867293U (en) | 2020-06-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072802A (en) * | 2020-08-04 | 2020-12-11 | 北京临近空间飞行器系统工程研究所 | Wireless power supply device in aircraft cabin |
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2019
- 2019-10-17 CN CN201921740568.1U patent/CN210867293U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072802A (en) * | 2020-08-04 | 2020-12-11 | 北京临近空间飞行器系统工程研究所 | Wireless power supply device in aircraft cabin |
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