CN113733944A - Dynamic wireless charging foreign matter detection system based on 5G communication - Google Patents

Dynamic wireless charging foreign matter detection system based on 5G communication Download PDF

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Publication number
CN113733944A
CN113733944A CN202110887099.1A CN202110887099A CN113733944A CN 113733944 A CN113733944 A CN 113733944A CN 202110887099 A CN202110887099 A CN 202110887099A CN 113733944 A CN113733944 A CN 113733944A
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CN
China
Prior art keywords
module
foreign matter
wireless charging
detection
transmitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110887099.1A
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Chinese (zh)
Inventor
仇新宇
王成亮
谭林林
潘志新
阮文骏
肖宇华
翟学锋
郑海雁
蒋一泉
杨晓梅
孟涛
徐妍
杨庆胜
李军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Southeast University
State Grid Jiangsu Electric Power Co Ltd
Jiangsu Fangtian Power Technology Co Ltd
Jiangsu Frontier Electric Power Technology Co Ltd
Original Assignee
Southeast University
State Grid Jiangsu Electric Power Co Ltd
Jiangsu Fangtian Power Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Southeast University, State Grid Jiangsu Electric Power Co Ltd, Jiangsu Fangtian Power Technology Co Ltd filed Critical Southeast University
Priority to CN202110887099.1A priority Critical patent/CN113733944A/en
Publication of CN113733944A publication Critical patent/CN113733944A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12Inductive energy transfer
    • B60L53/124Detection or removal of foreign bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12Inductive energy transfer
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/60Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/14Plug-in electric vehicles
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/16Information or communication technologies improving the operation of electric vehicles

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention discloses a dynamic wireless charging foreign matter detection system based on 5G communication, which belongs to the technical field of wireless power transmission and comprises an electric automobile dynamic wireless charging system with an action switch at a transmitting end, a CPE terminal module, a regional 5G base station and a command console; the foreign matter detection module transmits foreign matter detection information to the CPE terminal module through wireless signal transmission; the action switch at the transmitting end of the electric automobile dynamic wireless charging system is used for receiving a control instruction sent by the CPE terminal module; the CPE terminal module has the information transmitting and receiving functions and is used for carrying out information interaction with the regional 5G base station; and the area 5G base station is used for carrying out information interaction with the command console. The invention can remove the heating foreign matters in the EV-DWPT system in time, improves the charging efficiency of the electric automobile and ensures the safety of the charging system.

Description

Dynamic wireless charging foreign matter detection system based on 5G communication
Technical Field
The invention relates to a dynamic wireless charging foreign matter detection system based on 5G communication, and belongs to the technical field of wireless power transmission.
Background
At present, the number of electric automobiles is rapidly increasing, the reserved quantity of electric automobiles which are developed in a large scale in the future is a remarkable number, and a plurality of problems are still faced when the development of the electric automobiles is further promoted and the market share of the electric automobiles is expanded. Compared with the traditional fuel vehicle, the electric vehicle still faces the disadvantages of electric energy supply and electric energy storage. In the aspect of electric energy supply, due to the fact that the charging speed is low, more charging facilities are indirectly needed to meet the charging requirements of future large-scale electric vehicles. In addition, most of electric energy supply modes of the electric automobile are wired (contact) charging, and the charging mode has the defects of inconvenient charging, poor flexibility, easy abrasion of contacts, cable aging, potential electric shock hazard and the like. Electric energy storage is another pain point affecting the development of electric automobiles, and the capacity of a power battery of an electric automobile is closely related to the endurance mileage of the electric automobile. In order to pursue a larger driving range, on the premise that the battery energy storage technology is slowly developed, a method of increasing the capacity of the energy storage device is generally adopted, but the limited space of the electric automobile is also occupied, and the cost of the electric automobile is increased. Therefore, in order to overcome the two defects, an electric vehicle dynamic wireless charging technology (EV-DWPT technology for short) comes from the beginning, on one hand, the EV-DWPT technology assumes that the electric vehicle is charged in real time under the road surface, so that the cruising range of the electric vehicle is infinitely increased, on the other hand, the electric energy is charged in real time, so that the electric vehicle does not need to load energy storage equipment with large capacity, the occupied space of a battery is reduced, and the cost is reduced.
The dynamic wireless charging technology of the electric automobile can realize long driving mileage of the automobile and reduce the occupied space of the battery, and can be a future trend of the electric automobile industry. But because the transmission of wireless transmission system has the characteristics of open structure, the car goes the road surface and can not avoid to have the foreign matter to drop in addition, especially metal class foreign matter drops near the syntonizer can be because the vortex is aroused to the magnetic induction phenomenon and then generate heat, this can make the holistic transmission efficiency of system reduce, if the metal foreign matter transmission is serious, the conflagration more can take place, threaten system safety, a developments wireless foreign matter detecting system that charges is consequently established, possess certain ageing simultaneously, can in time detect out road surface foreign matter ground type, in time clear away the high foreign matter of risk level, it is the problem that electric automobile developments wireless charging technology becomes to be solved.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a dynamic wireless charging foreign matter detection system based on 5G communication, and the real-time foreign matter detection function of the dynamic wireless charging system is realized.
The technical scheme is as follows: in order to achieve the purpose, the technical scheme of the invention is as follows:
a dynamic wireless charging foreign matter detection system based on 5G communication comprises a foreign matter detection module, an electric automobile dynamic wireless charging system with an action switch at a transmitting end, a CPE terminal module, a regional 5G base station and a command console, wherein the foreign matter detection module is used for detecting foreign matters in the electric automobile dynamic wireless charging system; the foreign matter detection module transmits foreign matter detection information to the CPE terminal module through wireless signal transmission; the action switch at the transmitting end of the electric automobile dynamic wireless charging system is used for receiving a control instruction sent by the CPE terminal module; the CPE terminal module has the information transmitting and receiving functions and is used for carrying out information interaction with the regional 5G base station; and the area 5G base station is used for carrying out information interaction with the command console.
Further, the foreign matter detection module include detection coil module, detection circuit module, wireless communication module, detection coil module become horizontal line and vertical symmetrical coil array by single circle copper winding, place in the road surface below of the transmitting coil top of corresponding electric automobile developments wireless charging system, the foreign matter information on its upper road surface of real-time supervision, detection circuit module with detection coil module output links to each other, confirms the position and the type information of foreign matter through the impedance change of detection coil module to send the foreign matter information code for wireless communication module, wireless communication module possess the information emission function and be used for sending the detection signal who generates for CPE terminal module.
Furthermore, the dynamic wireless charging system for the electric automobile comprises an action switch, an inverter power supply, a transmitting coil module and a load module; the action switch is arranged at a transmitting end of the dynamic wireless charging system of the electric automobile, the action switch is connected with the inverter power supply and used for receiving a control signal sent by the controller to carry out opening and closing operations, the inverter power supply is connected with direct current power supply of a power grid and used for converting direct current into high-frequency alternating current to be transmitted to the transmitting coil module, the transmitting coil module comprises a transmitting coil and a compensating circuit, the transmitting coil is in a short segmented structure and is formed by winding litz wires, energy is transmitted to the load module through the transmitting coil in an electromagnetic induction mode, and the load module is used for receiving electric energy transmitted by the transmitting coil module below the road surface and charging a lithium battery of the automobile.
Further, the command console comprises a signal receiving end, a signal transmitting end and a task management system, wherein the task management system is used for judging the risk level of the foreign matters according to the size and type of the foreign matters and the existing time, preferentially sending clearing arrangement to the foreign matters with higher risk level, sending control instructions to control an action switch of the dynamic wireless charging system of the electric automobile through the 5G base station, and turning off the short sectional type transmitting coil with higher risk of the foreign matters.
The invention has the beneficial effects that:
the invention aims at the technical background of foreign matter detection of a dynamic wireless charging system, and provides a dynamic wireless charging foreign matter detection system based on 5G communication, which realizes real-time monitoring of dynamic wireless charging road foreign matters in a large area by adding a 5G base station to carry out high-capacity high-rate information transmission, ensures system safety, avoids the cost of manual reciprocating inspection, prevents the reduction of system transmission efficiency, and provides a new idea for the application of a dynamic wireless charging technology to electric vehicles.
Drawings
FIG. 1 is a flow chart of the 5G information transmission of the present invention;
FIG. 2 is a block diagram of a dynamic wireless charging system;
fig. 3 is a structural view of the foreign matter detection system.
Detailed Description
The dynamic wireless charging foreign object detection system provided by the present application is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a dynamic wireless charging foreign object detection system based on 5G communication includes a foreign object detection module, an electric vehicle dynamic wireless charging system with an action switch at a transmitting end, a CPE terminal module, a regional 5G base station, and a command console; the foreign matter detection module transmits foreign matter detection information to the CPE terminal module through wireless signal transmission; the action switch at the transmitting end of the electric automobile dynamic wireless charging system is used for receiving a control instruction sent by the CPE terminal module; the CPE terminal module has the information transmitting and receiving functions and is used for carrying out information interaction with the regional 5G base station; and the area 5G base station is used for carrying out information interaction with the command console.
The module of the electric vehicle dynamic wireless charging system is shown in fig. 2, the transmitting coil in the embodiment adopts a short sectional structure, on a section of road surface, the transmitting coil 1 is connected in parallel through an inverter power supply 2, and an action switch 3 is arranged between the transmitting coil and the inverter power supply. Under normal conditions, the switch is kept in an on state, the inverter power supply provides high-frequency alternating current for the transmitting coil, and the transmitting coil supplies power to the receiving coil 4 on the electric automobile in a magnetic induction mode, so that the process of charging the electric automobile in real time is finally realized; when foreign matters exist on the road surface where the transmitting coil is located, the action switch receives the control signal, the connection between the transmitting coil and the inverter power supply is cut off, and the system safety is guaranteed.
The foreign matter detection system comprises a detection coil module 5, a detection circuit module and a wireless communication module, wherein the detection coil module is formed by winding a single-turn copper wire into a transverse wire and longitudinal symmetrical coil array, is placed above a corresponding EV-DWPT system transmitting coil 6 and below a road surface, and monitors foreign matter information of the road surface above the EV-DWPT system transmitting coil in real time. The detection circuit module is connected with the output end of the detection coil, the position and type information of the foreign matter is determined through the impedance change of the detection coil, when the foreign matter 7 exists above the road surface, particularly when the foreign matter is metal, the foreign matter can generate induction eddy current due to the electromagnetic induction principle, the coil impedance of the detection coil can be changed due to the eddy current effect of the metal, when the ferromagnetic metal foreign matter exists, the impedance on the detection coil changes differently from the metal foreign matter due to the magnetic gathering effect of the ferromagnetic metal, therefore, the type of the foreign matter can be detected, meanwhile, the position where the foreign matter is located can be detected based on the change of the induction voltage of the detection coil, and the risk level of the foreign matter can be further judged. The detection module is used for coding foreign matter information and sending the code of the coil to the wireless communication module, and the wireless communication module has an information transmitting function and can be used for sending the generated detection signal to the CPE module.
The CEP terminal has the functions of information transmitting and receiving, foreign matter detection information in the region can be transmitted to the 5G base station in the region, the 5G base station sends all foreign matter information in the region in charge to the command console, the task management system can judge the risk level according to the size and type of the foreign matter and the existing time, the foreign matter with higher risk level can be cleared preferentially, meanwhile, a control instruction is sent to control an EV-DWPT system action switch, and the short sectional type transmitting coil with higher foreign matter risk is turned off.
The above description is only the technical solution of the present invention, and the protection scope of the present invention is not limited thereby. It will be apparent to those skilled in the art that modifications and equivalents may be made without departing from the principles of the invention and are intended to be within the scope of the invention.

Claims (4)

1. A dynamic wireless charging foreign matter detection system based on 5G communication is characterized by comprising a foreign matter detection module, an electric vehicle dynamic wireless charging system with an action switch at a transmitting end, a CPE terminal module, a regional 5G base station and a command console, wherein the foreign matter detection module is used for detecting foreign matters in the electric vehicle dynamic wireless charging system; the foreign matter detection module transmits foreign matter detection information to the CPE terminal module through wireless signal transmission; the action switch at the transmitting end of the electric automobile dynamic wireless charging system is used for receiving a control instruction sent by the CPE terminal module; the CPE terminal module has the information transmitting and receiving functions and is used for carrying out information interaction with the regional 5G base station; and the area 5G base station is used for carrying out information interaction with the command console.
2. The system according to claim 1, wherein the foreign object detection module comprises a detection coil module, a detection circuit module, and a wireless communication module, the detection coil module is formed by winding a single-turn copper wire into a transverse wire and a longitudinally symmetrical coil array, and is placed below a road surface above a transmission coil of the dynamic wireless charging system corresponding to the electric vehicle to monitor foreign object information on the road surface above the detection coil module in real time, the detection circuit module is connected to an output end of the detection coil module, determines position and type information of the foreign object according to impedance changes of the detection coil module, and transmits foreign object information to the wireless communication module in an encoding manner, and the wireless communication module has an information transmission function and is used for transmitting a generated detection signal to the CPE terminal module.
3. The system for detecting the foreign matter charged dynamically and wirelessly based on the 5G communication according to claim 1, wherein the system for dynamically and wirelessly charging the electric vehicle comprises an action switch, an inverter power supply, a transmitting coil module and a load module; the action switch is arranged at a transmitting end of the dynamic wireless charging system of the electric automobile, the action switch is connected with the inverter power supply and used for receiving a control signal sent by the controller to carry out opening and closing operations, the inverter power supply is connected with direct current power supply of a power grid and used for converting direct current into high-frequency alternating current to be transmitted to the transmitting coil module, the transmitting coil module comprises a transmitting coil and a compensating circuit, the transmitting coil is in a short segmented structure and is formed by winding litz wires, energy is transmitted to the load module through the transmitting coil in an electromagnetic induction mode, and the load module is used for receiving electric energy transmitted by the transmitting coil module below the road surface and charging a lithium battery of the automobile.
4. The system according to claim 1, wherein the command console comprises a signal receiving terminal, a signal transmitting terminal, and a task management system, wherein the task management system is configured to perform risk level determination for the size, type, and time of the foreign object, preferentially send a cleaning arrangement for the foreign object with a higher risk level, and send a control command to control an operation switch of the dynamic wireless charging system of the electric vehicle via the 5G base station, so as to turn off the short segment type transmitting coil with a higher risk of the foreign object.
CN202110887099.1A 2021-08-03 2021-08-03 Dynamic wireless charging foreign matter detection system based on 5G communication Pending CN113733944A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107554342A (en) * 2017-09-14 2018-01-09 杭州国控电力科技有限公司 Charging pile with 5G base stations
CN109664793A (en) * 2018-12-19 2019-04-23 国网江苏省电力有限公司 A kind of monitoring method of the wireless charging automobile position based on ground induction coil
CN109808520A (en) * 2019-01-28 2019-05-28 许继电源有限公司 A kind of electric car wireless charging foreign matter and position detecting system and method
CN209471543U (en) * 2019-01-29 2019-10-08 河南理工大学 A kind of unmanned plane traffic accident alarm system based on 5G
CN110460147A (en) * 2019-07-12 2019-11-15 首帆动力科技股份有限公司 A kind of base station 5G quick service mobile power source system
CN111452638A (en) * 2020-03-24 2020-07-28 安洁无线科技(苏州)有限公司 Wireless charging method based on 5G and server
US20200251929A1 (en) * 2019-02-05 2020-08-06 Mojo Mobility, Inc. System and method for infrastructure, vehicle and internet of things wireless chargers
CN112701808A (en) * 2020-12-21 2021-04-23 歌尔股份有限公司 Foreign matter detection circuit, wireless charging system and foreign matter detection method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107554342A (en) * 2017-09-14 2018-01-09 杭州国控电力科技有限公司 Charging pile with 5G base stations
CN109664793A (en) * 2018-12-19 2019-04-23 国网江苏省电力有限公司 A kind of monitoring method of the wireless charging automobile position based on ground induction coil
CN109808520A (en) * 2019-01-28 2019-05-28 许继电源有限公司 A kind of electric car wireless charging foreign matter and position detecting system and method
CN209471543U (en) * 2019-01-29 2019-10-08 河南理工大学 A kind of unmanned plane traffic accident alarm system based on 5G
US20200251929A1 (en) * 2019-02-05 2020-08-06 Mojo Mobility, Inc. System and method for infrastructure, vehicle and internet of things wireless chargers
CN110460147A (en) * 2019-07-12 2019-11-15 首帆动力科技股份有限公司 A kind of base station 5G quick service mobile power source system
CN111452638A (en) * 2020-03-24 2020-07-28 安洁无线科技(苏州)有限公司 Wireless charging method based on 5G and server
CN112701808A (en) * 2020-12-21 2021-04-23 歌尔股份有限公司 Foreign matter detection circuit, wireless charging system and foreign matter detection method

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Application publication date: 20211203

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