CN205544455U - Quick wireless charging system of electric automobile with foreign matter detects function - Google Patents

Quick wireless charging system of electric automobile with foreign matter detects function Download PDF

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Publication number
CN205544455U
CN205544455U CN201620237535.5U CN201620237535U CN205544455U CN 205544455 U CN205544455 U CN 205544455U CN 201620237535 U CN201620237535 U CN 201620237535U CN 205544455 U CN205544455 U CN 205544455U
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power
electric automobile
unit
module
charging
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CN201620237535.5U
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涂聪
王军华
蔡昌松
龙孟姣
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Wuhan University WHU
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Wuhan University WHU
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Abstract

The utility model relates to a radio frequency identification technique and wireless power transmission technology, concretely relates to quick wireless charging system of electric automobile with foreign matter detects function, including charging station emission unit and automobile body receiving element, charging station emission unit includes that power module, information demodulation module, power control circuit, power oscillation module, communication coil, RFID read the ware and power transmitting coil connects gradually, automobile body receiving element includes that electromagnetism receiving coil, information monitoring connect gradually with modulation unit, rectification voltage -stabilizing module, RFID electronic tags and on -vehicle battery, wireless connection between charging station emission unit and the automobile body receiving element. This system can detect wireless transmitting terminal that charges and the foreign matter between the receiving terminal, takes measures to investigate hidden danger voluntarily, avoids the emergence of incident. Adaptive capacity to environment is stronger, requires to hang down to operational environment, and all -weather automatic identification, quick response, it is anti -interference.

Description

A kind of electric automobile fast wireless charging system with foreign bodies detection function
Technical field
This utility model relates to radio frequency identification technology and wireless power transmission technology, particularly to a kind of electric automobile fast wireless charging system with foreign bodies detection function.
Background technology
Nowadays, Global Auto yield is skyrocketed through, and the gasoline that overwhelming majority vehicle is used, diesel oil cause the aggravation of global pollution, earth ecology balance to wreck.In the last few years, country pays much attention to research and development and the use of clean energy vehicle, puts into effect multinomial relevant policies and encourages the development of electric automobile industry, and the yield of electric automobile rises year by year, charging electric vehicle technology is developed the most rapidly, and particularly wireless charging technology becomes the new direction of current research.
Wireless power technology (radio energy-transmitting) device need not be connected with electric power system by equipment with cable, just directly it can be carried out quick charge.In addition noncontact quick charge can be arranged in multiple place, can be again that various types of equipment provides charging service, and making charges whenever and wherever possible becomes possible to.
Radio energy-transmitting technology the most just be electromagentic resonance coupling technique, this technology is mainly realized by the main devices such as power supply, electric power output, power receiver, commutator.Being with electromagnetic induction charged mode difference, magnetic resonance mode has installed a high-frequency drive power supply additional, uses the LC resonant circuit having both coil and capacitor, and is not made up of power transmission simple coils and receives two unit.The numerical value of resonant frequency, can change with power transmission and the change of spacing of reception unit.When transmitting range changes, efficiency of transmission also can reduce rapidly as electromagnetic induction.To this end, resonant frequency can be adjusted by control circuit, the circuit of two unit is made to resonate.
But, not only can affect charging be normally carried out if there is foreign body between the transmitting terminal and receiving terminal of wireless charging, it is also possible to cause security incident.
Utility model content
The purpose of this utility model is to provide one and can detect wireless charging system for electric automobile transmitter unit and receive whether there is foreign body between unit, and takes the device of corresponding measure.
For achieving the above object, the technical solution adopted in the utility model is: a kind of electric automobile fast wireless charging system with foreign bodies detection function, receives unit 2 including charging station transmitter unit 1 and car body;Described charging station transmitter unit 1 includes that power module 11, information demodulation module 12, power control circuit 13, oscillation of power module 14, communication coil 15, RFID reader 16 and power emission coil 17 are sequentially connected with;Described car body receives unit 2 and includes that electromagnetism receiving coil 21, information monitoring are sequentially connected with modulating unit 22, rectifying and voltage-stabilizing module 23, RFID 24 and on-vehicle battery 25;Described charging station transmitter unit 1 and described car body receive wireless connections between unit 2.
Further, RI radio intelligence is carried out between described information demodulation module 12 and described information monitoring and modulating unit 22 mutual.
Further, described communication coil 15 receives the communication information that described electromagnetism receiving coil 21 is transmitted by power carrier.
Further, for being of coupled connections between described RFID reader 16 and described RFID 24.
The workflow of above-mentioned electric automobile fast wireless charging system: the power module 11 of charging station transmitter unit provides charging voltage for oscillation of power module 14;Information demodulation module 12 realizes receiving with car body the RI radio intelligence of unit 2 and alternately and controls power control circuit 13;Power control circuit 13 controls the break-make of oscillation of power module 14;The oscillation of power that power module 11 is inputted by oscillation of power module 14 is higher-order of oscillation electromagnetic field;Communication coil 15 receives car body and receives the communication information that the electromagnetism receiving coil 21 of unit is transmitted by power carrier;RFID reader 16 detects the signal of RFID 24;Power emission coil 17 is launched oscillation of power module 14 and is vibrated the higher-order of oscillation magnetic field;Electromagnetism receiving coil 21 receives the energy that power emission coil 17 is launched;The information monitoring of car body reception unit 2 and modulates information unit 22 detect the real time information of on-vehicle battery 25, carry out information exchange with information demodulation module 12;The energy rectifying and voltage-stabilizing of reception is become constant unidirectional current by rectifying and voltage-stabilizing module 23, powers to on-vehicle battery 25;RFID 24 sends a signal to RFID reader to complete identification;On-vehicle battery 25 stores electric automobile electricity consumption.
RFID is a kind of REID, and accepter passes through radio signal, identifies object and read-write data, and it is widely used in the fields such as industry manufacture, merchandise control, public transport management, safe identification.Its adaptive capacity to environment is relatively strong, low to operating environment requirements, and round-the-clock automatic identification quickly responds, and can penetrate non-metallic objectsit is not a metal object, anti-interference, anti-collision ability is stronger.
Above-mentioned electric automobile fast wireless charging system carries out identification by RFID technique, after RFID read antenna retrieves the signal that RFID is launched, signal passes to RFID reader analysis, system, by the electronic tag sequence number information comparison in signal, carries out vehicle identity information checking;If serial number is correct, then being verified by information of vehicles, wireless charging system enters the line stage of charging station and on-vehicle battery, and after line completes, on-vehicle battery will enter normal charging condition.
After entrance electric automobile and charging station line complete, electric automobile fast wireless charging system first completes charge efficiency and initializes, the initial power of the electromagnetism receiving coil 21 of unit 2 is received by the power emission coil 17 of charging station transmitter unit 1 and car body, calculate wireless power transmission efficiency, and by result cache at charging station transmitter unit 1.After initialization completes, electric automobile fast wireless charging system enters normal foreign bodies detection state, if the fluctuation of wireless power transmission efficiency the least scope, without departing from preset security value, then system worked well;If wireless power transmission efficiency change amplitude exceedes default safety range, system can reduce the output controlling oscillation of power module 14 automatically, stop the charging work of charging station transmitter unit 1, and send miscue information to electric automobile fast wireless charging system management backstage, wait that tour personnel investigate fault.
During charging on-vehicle battery, if communication coil 15 and RFID reader 16 lose electric automobile signal simultaneously, sail out of in the case of i.e. electric automobile is between non-normal turn-off on-vehicle battery and charging station, or because Vehicular battery fault is out of service, charging station power control circuit 13 sends the work order stopping transmission electric energy automatically, control to close oscillation of power module 14, stop charging.
The beneficial effects of the utility model: can detect the foreign body between the transmitting terminal of wireless charging and receiving terminal, take measures to investigate hidden danger, it is to avoid the generation of security incident automatically.Using RFID technique to carry out identification, adaptive capacity to environment is relatively strong, low to operating environment requirements, and round-the-clock automatic identification quickly responds, and can penetrate non-metallic objectsit is not a metal object, anti-interference, anti-collision ability is stronger.There is provided efficiently for electric automobile car owner, charging service easily.
Accompanying drawing explanation
Fig. 1 is the allomeric function schematic diagram of one embodiment of this utility model;
Fig. 2 is the schematic diagram of the workflow of one embodiment of this utility model;
Fig. 3 is the workflow schematic diagram that the RFID technique of one embodiment of this utility model carries out identification;
Wherein, 1-charging station transmitter unit, 11-power module, 12-information demodulation module, 13: power control circuit, 14-oscillation of power module, 15-communication coil, 16-RFID reader, 17-power emission coil, 2-car body receive unit, 22-information monitoring and modulating unit, 23-rectifying and voltage-stabilizing module, 24-RFID electronic tag, 25-on-vehicle battery.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiment of the present utility model is described in detail.As it is shown in figure 1, the technical scheme that present embodiment is used is as follows: a kind of electric automobile fast wireless charging system with foreign bodies detection function, receive unit 2 including charging station transmitter unit 1 and car body;Described charging station transmitter unit 1 includes that power module 11, information demodulation module 12, power control circuit 13, oscillation of power module 14, communication coil 15, RFID reader 16 and power emission coil 17 are sequentially connected with;Described car body receives unit 2 and includes that electromagnetism receiving coil 21, information monitoring are sequentially connected with modulating unit 22, rectifying and voltage-stabilizing module 23, RFID 24 and on-vehicle battery 25;Described charging station transmitter unit 1 and described car body receive wireless connections between unit 2.
RI radio intelligence is carried out mutual between described information demodulation module 12 and described information monitoring and modulating unit 22.
Described communication coil 15 receives the communication information that described electromagnetism receiving coil 21 is transmitted by power carrier.
For being of coupled connections between described RFID reader 16 and described RFID 24.
In above-mentioned electric automobile fast wireless charging system, power module 11 provides charging voltage for oscillation of power module 14;Information demodulation module 12 realizes receiving with car body the RI radio intelligence of unit 2 and alternately and controls power control circuit 13;Power control circuit 13 controls the break-make of oscillation of power module 14;The oscillation of power that power module 11 is inputted by oscillation of power module 14 is higher-order of oscillation electromagnetic field;Communication coil 15 receives car body and receives the communication information that the electromagnetism receiving coil 21 of unit 2 is transmitted by power carrier;RFID reader 16 detects RFID signal;Power emission coil 17 is launched oscillation of power module 14 and is vibrated the high-frequency oscillating circuits;Electromagnetism receiving coil 21 receives the energy that power emission coil 17 is launched;Information monitoring and modulating unit 22, the real time information of detection on-vehicle battery 25, carry out information exchange with information demodulation module 12;Rectifying and voltage-stabilizing module 23, becomes constant unidirectional current by the energy rectifying and voltage-stabilizing of reception, powers to on-vehicle battery 25;RFID 24, sends a signal to RFID reader and has completed identification;On-vehicle battery 25, stores electric automobile electricity consumption.
After entrance electric automobile and charging station line complete, electric automobile fast wireless charging system first completes charge efficiency and initializes.After power emission coil 17 enters normal operating conditions, information monitoring and modulating unit 22 first detect the power information of electromagnetism receiving coil 21, this information is loaded into electromagnetism receiving coil 21 after ovennodulation, it is sent to communication coil 15 by power carrier, high-frequency signal is demodulated by information demodulation module 12 subsequently, it is sent to power control circuit 13, now system passes through the power emission coil 17 of charging station transmitter unit and the initial power of the electromagnetism receiving coil 21 of car body reception unit, calculate wireless power transmission efficiency, and by result cache at charging station transmitting terminal.
After initialization completes, electric automobile fast wireless charging system enters normal foreign bodies detection state, and work process is as shown in Figure 2.Information monitoring and modulating unit 22 keep the changed power situation detecting electromagnetism receiving coil 21 in real time, if the fluctuation of wireless power transmission efficiency the least scope, without departing from preset security value, then system worked well.If wireless power transmission efficiency change amplitude exceedes default safety range, then system judges to there is foreign body between power emission coil 17 and electromagnetism receiving coil 21, charging system is made normally to work, now power control circuit 13 action, reduce the output controlling oscillation of power module 14, stop the charging work of electric automobile fast wireless charging system transmitting terminal, and send miscue information to electric automobile fast wireless charging system management backstage, wait that tour personnel investigate fault.
During electric automobile fast wireless charging system is charging on-vehicle battery, communication coil 15, electromagnetism receiving coil 21 are electric automobile and the primary communications channel of electric automobile fast wireless charging system.During charging on-vehicle battery, if communication coil 15 and RFID reader 16 lose electric automobile signal simultaneously, i.e. electric automobile sails out of in the case of connecting between non-normal turn-off on-vehicle battery and charging station, or because Vehicular battery fault is out of service, the power control circuit 13 of electric automobile fast wireless charging system sends the work order stopping transmission electric energy automatically, control to close oscillation of power module 14, stop charging.
The embodiment of this electric automobile fast wireless charging system carries out the workflow of identification by RFID technique, as shown in Figure 3.Electric automobile fast wireless charging system has RFID reader and configures multiple RFID read antenna detection search signal, and detection range covers whole electric automobile charging station;After RFID read antenna retrieves the signal that RFID is launched, signal passes to RFID reader analysis, and system, by the electronic tag sequence number information comparison in signal, carries out vehicle identity information checking.If serial number is correct, then being verified by information of vehicles, electric automobile fast wireless charging system enters the line stage of charging station and on-vehicle battery, and after line completes, on-vehicle battery will enter normal charging condition.
It should be appreciated that the part that this specification does not elaborates belongs to prior art.
Although describing detailed description of the invention of the present utility model above in association with accompanying drawing, but those of ordinary skill in the art are to be understood that, these are merely illustrative of, and these embodiments can be made various deformation or amendment, without departing from principle of the present utility model and essence.Scope of the present utility model is only limited by the claims that follow.

Claims (4)

1. an electric automobile fast wireless charging system with foreign bodies detection function, it is characterised in that: include that charging station transmitter unit (1) and car body receive unit (2);Described charging station transmitter unit (1) includes that power module (11), information demodulation module (12), power control circuit (13), oscillation of power module (14), communication coil (15), RFID reader (16) and power emission coil (17) are sequentially connected with;Described car body receives unit (2) and includes that electromagnetism receiving coil (21), information monitoring are sequentially connected with modulating unit (22), rectifying and voltage-stabilizing module (23), RFID (24) and on-vehicle battery (25);Described charging station transmitter unit (1) and described car body receive wireless connections between unit (2).
There is the electric automobile fast wireless charging system of foreign bodies detection function the most as claimed in claim 1, it is characterised in that: carry out RI radio intelligence between described information demodulation module (12) and described information monitoring and modulating unit (22) mutual.
There is the electric automobile fast wireless charging system of foreign bodies detection function the most as claimed in claim 1, it is characterised in that: described communication coil (15) receives the communication information that described electromagnetism receiving coil (21) is transmitted by power carrier.
There is the electric automobile fast wireless charging system of foreign bodies detection function the most as claimed in claim 1, it is characterised in that: for being of coupled connections between described RFID reader (16) and described RFID (24).
CN201620237535.5U 2016-03-25 2016-03-25 Quick wireless charging system of electric automobile with foreign matter detects function Active CN205544455U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106230132A (en) * 2016-09-27 2016-12-14 武汉大学 There is the multi-coil wireless charging system of metal object detecting functions
CN106356932A (en) * 2016-09-26 2017-01-25 武汉大学 Intelligent robot wireless charging system with direction self-adaptation coil structure
CN107860475A (en) * 2017-11-03 2018-03-30 中惠创智无线供电技术有限公司 A kind of electric automobile and the detection device for foreign matter for electric automobile
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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106356932A (en) * 2016-09-26 2017-01-25 武汉大学 Intelligent robot wireless charging system with direction self-adaptation coil structure
CN106230132A (en) * 2016-09-27 2016-12-14 武汉大学 There is the multi-coil wireless charging system of metal object detecting functions
CN107860475A (en) * 2017-11-03 2018-03-30 中惠创智无线供电技术有限公司 A kind of electric automobile and the detection device for foreign matter for electric automobile
CN107860475B (en) * 2017-11-03 2019-11-01 中惠创智无线供电技术有限公司 A kind of electric car and the detection device for foreign matter for electric car
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

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