CN109510323B - Non-contact electricity taking device - Google Patents
Non-contact electricity taking device Download PDFInfo
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- CN109510323B CN109510323B CN201811543873.1A CN201811543873A CN109510323B CN 109510323 B CN109510323 B CN 109510323B CN 201811543873 A CN201811543873 A CN 201811543873A CN 109510323 B CN109510323 B CN 109510323B
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- 230000005611 electricity Effects 0.000 title claims abstract description 12
- 230000005684 electric field Effects 0.000 claims abstract description 56
- 238000007599 discharging Methods 0.000 claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 238000012806 monitoring device Methods 0.000 claims abstract description 14
- 230000009466 transformation Effects 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 56
- 229910052802 copper Inorganic materials 0.000 claims description 56
- 239000010949 copper Substances 0.000 claims description 56
- 230000015556 catabolic process Effects 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 5
- 208000025274 Lightning injury Diseases 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 claims description 2
- 208000028659 discharge Diseases 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000005459 micromachining Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Emergency Protection Circuit Devices (AREA)
- Electrotherapy Devices (AREA)
Abstract
The invention relates to the technical field of electric power, relates to MEMS electric field sensor control and application of non-contact electricity taking on an electric transmission line, and in particular relates to a non-contact electricity taking device. The invention monitors the electric field of the power transmission line by utilizing the MEMS electric field sensor, realizes the adjustment of the high-frequency pulse discharging device, ensures that the electric charge input by the high-frequency pulse discharging device can be discharged and broken down to generate high-frequency pulse current, and then the high-frequency voltage transformation device and the rectification filter circuit are used for finishing the current into low-voltage direct current, so that the on-line monitoring device of the power transmission line can be powered, the non-contact power taking is realized, the on-line monitoring device does not need to be additionally connected with a power supply or used for replacing a battery, and the influence on the safety and the reliability of a power system when the battery is replaced is avoided.
Description
Technical Field
The invention relates to the technical field of electric power, relates to MEMS electric field sensor control and application of non-contact electricity taking on an electric transmission line, and in particular relates to a non-contact electricity taking device.
Background
In recent years, with further increase of transmission lines and continuous expansion of transmission areas, various problems such as large transmission capacity, long distance, complex topography and the like are highlighted. The on-line monitoring device can effectively monitor the real-time state of the line, quickly report the troubleshooting fault point, reduce the manual inspection danger, increase the safety and improve the efficiency, and becomes the main development direction of the current power grid company.
However, as a traditional power supply system, such as the inconvenient effects of manual replacement and weather caused by storage battery power supply, wind energy and solar energy, the safety of line monitoring is greatly reduced, and the safety and reliability of the power system are greatly compromised.
MEMS electric field sensors are novel sensors fabricated using microelectronics and micromachining techniques. The intelligent power supply device has the characteristics of small volume, light weight, low cost, low power consumption, high reliability, suitability for mass production, easiness in integration and realization of intellectualization. At the same time, the feature size on the order of microns allows it to perform functions that are not possible with some conventional mechanical sensors. However, at present, the MEMS electric field sensors are powered by batteries, and are not applied to the field of non-contact power taking, so that the potential safety hazard caused by battery replacement exists.
Disclosure of Invention
The invention aims to overcome the defects of the prior art method, and provides a non-contact electricity taking device utilizing an MEMS electric field sensor, which can provide sufficient power for an on-line monitoring device of a power transmission line, so that the on-line monitoring device does not need to be additionally connected with the power supply and replace a battery, and the influence on the safety and reliability of a power system during the battery replacement is avoided.
The technical scheme of the invention is that; a non-contact electricity taking device comprises a charge receiving device, an MEMS electric field sensor, a high-frequency pulse discharging device, a high-frequency transformation device and a rectifying and filtering circuit; the electric charge receiving device collects electric charges caused by an electric field of a power transmission line, the MEMS electric field sensor detects the electric charges collected by the electric charge receiving device and outputs an electric signal, the high-frequency pulse discharging device receives the electric signal output by the MEMS electric field sensor, the electric charge receiving device transmits the collected electric charges to the high-frequency pulse discharging device to perform pulse breakdown discharging to generate pulse current, the pulse current performs multiple breakdown discharging to form a high-frequency pulse power supply in the high-frequency pulse discharging device, the high-frequency pulse discharging device transmits the high-frequency pulse current to the high-frequency voltage transformation device to reduce the high-frequency pulse current to low-voltage current, the high-frequency voltage transformation device transmits the low-voltage current to the rectification filter circuit, the rectification filter circuit filters alternating current components in the low-voltage current, and finally the rectification filter circuit outputs low-voltage direct current to supply power for a load.
Further, the charge receiving device is a hollow copper sphere, the hollow copper sphere is used as a conductor and is arranged at the near end of the high-voltage transmission line, and the charge of the electric field is led into the high-frequency pulse discharging device through the hollow copper sphere.
Further, the high-frequency pulse discharging device provides a high-frequency pulse power supply for the whole power taking device, the high-frequency pulse discharging device is provided with a sharp copper column and a round copper column, when the electric charge collected from the electric charge receiving device reaches the electric quantity sufficient for puncturing the sharp plate electrode, the electric charge collected from the sharp copper column discharges the round copper column to achieve a primary puncturing effect, and energy storage is carried out after current is discharged to start secondary discharging, so that the effect of the high-frequency pulse power supply is achieved in a reciprocating mode.
Further, the high-frequency pulse discharging device is provided with a mechanical control system, and the mechanical control system is used for controlling and adjusting the distance between the sharp copper column and the round copper column; when the MEMS electric field sensor measures charges, the electric field is strong, the communication intensity is strong, the electric signal transmitted to the mechanical control system by the MEMS electric field sensor is strong, the distance between the sharp copper column and the round copper column is increased, and the obtained high-frequency pulse current is reduced; conversely, when the electric field is weak and the flux is weak, the electric signal transmitted to the mechanical control system by the MEMS electric field sensor is weak, and the distance between the sharp copper column and the round copper column is reduced, so that the obtained high-frequency pulse current is increased; the high-frequency pulse current reaches the function conforming to the breakdown current range through the adjustment of the mechanical control system, and the mechanical control system adjusts the gap between the two electrodes through the strength of the electric signal to reach the function of breakdown conduction.
Further, the mechanical control system adopts a miniature direct current motor, forward rotation and reverse rotation are carried out according to the intensity of the electric signal output by the MEMS electric field sensor, and the distance between the sharp copper column and the round copper column is adjusted by utilizing a screw rod sliding block mechanism. The miniature direct current motor drives the screw rod sliding block mechanism to realize the distance adjustment between the sharp copper column and the round copper column; when the electric field is strong, the electric signal output by the MEMS electric field sensor is a high-level electric signal, and the motor rotates positively, so that the distance between the sharp copper column and the round copper column is increased; when the electric field is weak, the electric signal output by the MEMS electric field sensor is weak and is a low-level electric signal, and the motor is reversed, so that the distance between the sharp copper column and the round copper column is reduced.
Further, the high-frequency transformer is a line output transformer capable of receiving high-frequency pulse current, and reduces the high-frequency pulse current to low-voltage current. The pulse current has direct current and alternating current components and clutter, the pulse current is led in from the C pole of the high-voltage packet line pipe of the line output transformer, the low-voltage current with the clutter is led out through the accelerating pole voltage adjusting potentiometer, the low-voltage current with the clutter passes through the rectifying and filtering circuit, and finally the low-voltage direct current is output to supply power for a load.
Further, the rectifying and filtering circuit is provided with an overvoltage protection circuit, so as to protect a load from damage caused by transient high voltage and large current, when lightning stroke or climate change causes sudden voltage change, and the electricity taking device is impacted by high energy, the overvoltage protection circuit is provided with TVS back-to-back suppressors D1 and D2 which can be conducted reversely at a very high speed instantaneously, absorb energy and discharge the energy into the ground, so that the effect of protecting the load and the transformer is achieved.
Further, the load comprises a battery element of a lithium battery built in the power transmission line on-line monitoring device.
The invention has the beneficial effects that; the invention monitors the electric field of the power transmission line by utilizing the MEMS electric field sensor, realizes the adjustment of the high-frequency pulse discharging device, ensures that the electric charge input by the high-frequency pulse discharging device can be discharged and broken down to generate high-frequency pulse current, and then the high-frequency voltage transformation device and the rectification filter circuit are used for finishing the current into low-voltage direct current, so that the on-line monitoring device of the power transmission line can be powered, the non-contact power taking is realized, the on-line monitoring device does not need to be additionally connected with a power supply or used for replacing a battery, and the influence on the safety and the reliability of a power system when the battery is replaced is avoided.
Drawings
Fig. 1 is a schematic flow chart of the present invention.
Fig. 2 is a schematic diagram of the operation of the MEMS electric field sensor.
Fig. 3 is a schematic diagram of discharge breakdown of the high-frequency pulse discharge device.
Fig. 4 is a schematic diagram of an overvoltage protection circuit.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.
Example 1:
as shown in FIG. 1, the non-contact electricity taking device comprises a charge receiving device, an MEMS electric field sensor, a high-frequency pulse discharging device, a high-frequency transformation device and a rectifying and filtering circuit; the electric charge receiving device collects electric charges caused by an electric field of a power transmission line, the MEMS electric field sensor detects the electric charges collected by the electric charge receiving device and outputs an electric signal, the electric charge receiving device transmits the collected electric charges to the high-frequency pulse discharging device to perform pulse breakdown discharging to generate pulse current, the high-frequency pulse discharging device regulates a pulse breakdown process according to the electric signal output by the MEMS electric field sensor, so that the pulse current reaches a breakdown current range, the pulse current performs multiple breakdown discharging to form a high-frequency pulse power supply in the high-frequency pulse discharging device, the high-frequency pulse discharging device transmits the high-frequency pulse current to the high-frequency voltage transforming device to reduce the voltage to be low-voltage current, the high-frequency voltage transforming device transmits the low-voltage current to the rectifying and filtering circuit, the rectifying and filtering circuit filters alternating current components in the low-voltage current, and finally the rectifying and filtering circuit outputs the low-voltage direct current to supply power for a load.
As shown in FIG. 2, the MEMS voltage sensor is connected with the charge receiving device, so that two sides of the surface of the MEMS voltage sensor are respectively provided with different charges, two Si blocks in the MEMS voltage sensor are also charged under the action of the charges, so that the near side of the conductive mass block is provided with different charges, the spring element is connected and is provided with a vacuum area, so that the spring pulls the mass block to generate micro movement (the inner wall is smooth and has no friction and can slide), the mass block moves, the light refracted by the high-strength photosensitive refraction layer passes through the gap of the mass block and is injected into the light emitting diode, the light signal obtained by the diode is converted into an electric signal to be transmitted into the next stage, and the stronger the electric field is, the better the light passing degree is.
In this embodiment, the voltage of the transmission line wire represents the electric field source, the charge receiving device represents the induced medium, according to the power frequency electric field induction principle, when the charge receiving device is close to the electric field source, the outer surface of the induction source of the charge receiving device generates charges with the same polarity, according to the law of electrostatic conservation, the inside of the induction source of the charge receiving device generates charges with opposite polarities and the same amount, and a potential difference is generated with a circular copper plate at the lower end of the gap, when the potential difference reaches the breakdown gap, the charges are conducted to break down and discharge.
The charge receiving device is a hollow copper ball, the hollow copper ball is used as a conductor and is arranged at the near end of the high-voltage transmission line, and the charge of the electric field is led into the high-frequency pulse discharging device through the hollow copper ball.
The high-frequency pulse discharging device provides a high-frequency pulse power supply for the whole electricity taking device, the high-frequency pulse discharging device is provided with a sharp copper column and a round copper column, when the electric charge collected by the electric charge receiving device reaches the electric quantity sufficient for breakdown of a sharp plate electrode, the electric charge collected from the sharp copper column discharges the round copper column to achieve a primary breakdown effect, and energy storage is carried out after current is discharged to start secondary discharge, so that the effect of the high-frequency pulse power supply is achieved in a reciprocating mode.
The high-frequency pulse discharging device is provided with a mechanical control system, and the mechanical control system is used for controlling and adjusting the distance between the sharp copper column and the round copper column; when the MEMS electric field sensor measures charges, the electric field is strong, the communication intensity is strong, the electric signal transmitted to the mechanical control system by the MEMS electric field sensor is strong, the distance between the sharp copper column and the round copper column is increased, and the obtained high-frequency pulse current is reduced; conversely, when the electric field is weak and the flux is weak, the electric signal transmitted to the mechanical control system by the MEMS electric field sensor is weak, and the distance between the sharp copper column and the round copper column is reduced, so that the obtained high-frequency pulse current is increased; the high-frequency pulse current reaches the function conforming to the breakdown current range through the adjustment of the mechanical control system, and the mechanical control system adjusts the gap between the two electrodes through the strength of the electric signal to reach the function of breakdown conduction.
As shown in fig. 3, in this embodiment, the mechanical control system adopts a micro direct current motor, performs forward rotation and reverse rotation according to the strength of the electric signal output by the MEMS electric field sensor, and adjusts the distance between the sharp copper column and the circular copper column by using a screw slider mechanism. The miniature direct current motor drives the screw rod sliding block mechanism to realize the distance adjustment between the sharp copper column and the round copper column; when the electric field is strong, the electric signal output by the MEMS electric field sensor is a high-level electric signal, and the motor rotates positively, so that the distance between the sharp copper column and the round copper column is increased; when the electric field is weak, the electric signal output by the MEMS electric field sensor is weak and is a low-level electric signal, and the motor is reversed, so that the distance between the sharp copper column and the round copper column is reduced.
In this embodiment, the high-frequency transformer is a line output transformer capable of receiving high-frequency pulse current, and steps down the high-frequency pulse current to a low-voltage current. The pulse current has direct current and alternating current components and clutter, the pulse current is led in from the C pole of the high-voltage packet line pipe of the line output transformer, the low-voltage current with the clutter is led out through the accelerating pole voltage adjusting potentiometer, the low-voltage current with the clutter passes through the rectifying and filtering circuit, and finally the low-voltage direct current is output to supply power for a load.
As shown in fig. 4, in this embodiment, the rectifying and filtering circuit is provided with an overvoltage protection circuit, so as to protect the load from being damaged due to the influence of instantaneous high voltage and high current, and when the lightning stroke or the climate change causes the voltage to suddenly change and the power taking device is impacted by high energy, the overvoltage protection circuit is provided with TVS back-to-back suppressors D1 and D2, which can be instantaneously conducted reversely at an extremely high speed, absorb energy and discharge the energy into the ground, thereby achieving the functions of protecting the load and the transformer.
In this embodiment, the load includes a battery element of a lithium battery built in the power transmission line on-line monitoring device.
The device is placed on the transmission line tower that needs to install on-line monitoring device, and wherein charge receiving device is external in the near-end from high tension transmission line, and this device is used for stably providing the required electric energy of equipment power, for on-line monitoring device real-time monitoring circuit data, protection circuit security provides the guarantee.
The invention monitors the electric field of the power transmission line by utilizing the MEMS electric field sensor, realizes the adjustment of the high-frequency pulse discharging device, ensures that the electric charge input by the high-frequency pulse discharging device can be discharged and broken down to generate high-frequency pulse current, and then the high-frequency voltage transformation device and the rectification filter circuit are used for finishing the current into low-voltage direct current, so that the on-line monitoring device of the power transmission line can be powered, the non-contact power taking is realized, the on-line monitoring device does not need to be additionally connected with a power supply or used for replacing a battery, and the influence on the safety and the reliability of a power system when the battery is replaced is avoided.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (5)
1. The non-contact electricity taking device is characterized by comprising a charge receiving device, an MEMS electric field sensor, a high-frequency pulse discharging device, a high-frequency transformation device and a rectifying and filtering circuit; the charge receiving device collects charges caused by an electric field of a power transmission line, the MEMS electric field sensor detects the charges collected by the charge receiving device and outputs an electric signal, the high-frequency pulse discharging device receives the electric signal output by the MEMS electric field sensor, the charge receiving device transmits the collected charges to the high-frequency pulse discharging device to perform pulse breakdown discharging to generate pulse current, the pulse current performs multiple breakdown discharging to form a high-frequency pulse power supply in the high-frequency pulse discharging device, the high-frequency pulse discharging device transmits the high-frequency pulse current to the high-frequency voltage transformation device to reduce the high-frequency pulse current to low-voltage current, the high-frequency voltage transformation device transmits the low-voltage current to the rectification filter circuit, the rectification filter circuit filters alternating current components in the low-voltage current, and finally the rectification filter circuit outputs low-voltage direct current to supply power for a load; the high-frequency pulse discharging device provides a high-frequency pulse power supply for the whole power taking device, the high-frequency pulse discharging device is provided with a sharp copper column and a round copper column, when the electric charge collected from the electric charge receiving device reaches the electric quantity sufficient for puncturing a sharp plate electrode, the electric charge collected from the sharp copper column discharges the round copper column to achieve a primary puncturing effect, and energy storage is carried out after current is discharged to start secondary discharging, so that the effect of the high-frequency pulse power supply is achieved in a reciprocating mode; the high-frequency pulse discharging device is provided with a mechanical control system, and the mechanical control system is used for controlling and adjusting the distance between the sharp copper column and the round copper column; when the MEMS electric field sensor measures charges, the electric field is strong, the communication intensity is strong, the electric signal transmitted to the mechanical control system by the MEMS electric field sensor is strong, the distance between the sharp copper column and the round copper column is increased, and the obtained high-frequency pulse current is reduced; conversely, when the electric field is weak and the flux is weak, the electric signal transmitted to the mechanical control system by the MEMS electric field sensor is weak, and the distance between the sharp copper column and the round copper column is reduced, so that the obtained high-frequency pulse current is increased; the high-frequency pulse current achieves the effect of meeting the breakdown current range through the adjustment of a mechanical control system, and the mechanical control system achieves the effect of breakdown conduction through the adjustment of the gap between the two electrodes by the strength of an electric signal; the high-frequency transformation device is a line output transformer for receiving high-frequency pulse current and reducing the high-frequency pulse current into low-voltage current.
2. The non-contact power take-off of claim 1, wherein the charge receiving means is a hollow copper sphere.
3. The non-contact power taking device according to claim 1, wherein the mechanical control system adopts a miniature direct current motor, performs forward rotation and reverse rotation according to the intensity of an electric signal output by the MEMS electric field sensor, and adjusts the distance between the sharp copper column and the round copper column by utilizing a screw rod sliding block mechanism.
4. The non-contact power taking device according to claim 1, wherein the rectifying and filtering circuit is provided with an overvoltage protection circuit, so as to protect the load from damage caused by transient high voltage and large current, and when the power taking device is subjected to high energy impact due to lightning stroke or climate change, the overvoltage protection circuit is provided with a TVS back-to-back suppressor D1 and a TVS back-to-back suppressor D2 which are instantaneously conducted reversely at an extremely high speed, absorb energy and discharge the energy into the ground, thereby achieving the functions of protecting the load and the transformer.
5. The non-contact power take-off device of claim 1, wherein the load comprises a battery element of a lithium battery built in the power transmission line on-line monitoring device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811543873.1A CN109510323B (en) | 2018-12-17 | 2018-12-17 | Non-contact electricity taking device |
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| CN201811543873.1A CN109510323B (en) | 2018-12-17 | 2018-12-17 | Non-contact electricity taking device |
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| CN109510323A CN109510323A (en) | 2019-03-22 |
| CN109510323B true CN109510323B (en) | 2024-01-23 |
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