CN207339431U - Radio energy transmission system - Google Patents
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- CN207339431U CN207339431U CN201720754382.6U CN201720754382U CN207339431U CN 207339431 U CN207339431 U CN 207339431U CN 201720754382 U CN201720754382 U CN 201720754382U CN 207339431 U CN207339431 U CN 207339431U
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Abstract
The utility model proposes a kind of radio energy transmission system, the utility model includes that wireless transmitting terminals and the wireless receiving end of energy and communications can be carried out, wireless transmitting terminals further include transmitting terminal MCU, and it is connected to the transmitting terminal resonant capacitance of transmitting coil electrical energy inputs, the both ends of transmitting terminal resonant capacitance are arranged in parallel available for the metallic foreign body detection circuit detected whether there are metallic foreign body, transmitting terminal MCU is electrically connected metallic foreign body detection circuit, whether to control the startup of metallic foreign body detection circuit；The method of the utility model carries out the detection of metallic foreign body using above-mentioned radio energy transmission system.The utility model is first identified before the work of radio energy system whether there is metallic foreign body between transmitting and receiving coil, ensure that safe and reliable, the steady operation of whole radio energy transmission system.
Description
Technical field
The utility model belongs to wireless power transmission field, more particularly to one kind can detect metallic foreign body before wireless charging
Radio energy transmission system.
Background technology
Wireless power transmission is a kind of technology that electric energy transmission is carried out by external electromagnetic field coupling, its major advantage is
It need not plug, it is easy to use；Electric spark will not be produced, the scope of application is wider, such as can be in inflammable and explosive industrial ring
Used in border, energy transmission can be carried out in water, can also be applied in the submerged applications such as marine settings.
At present, radio energy transmission system mainly includes two parts, and a part is energy transmission, harmonious by transformation of electrical energy
Shake coupling, electric energy is transferred to wireless receiving end from wireless transmitting terminals；Another part is communication control, is mainly used for completing hair
The information and control penetrated between end and receiving device interact, and ensure the safety and stability of whole system work.Wherein, wirelessly
For electric energy transmission system when carrying out energy transmission, often there is certain between wireless transmission end-coil and wireless receiving end-coil
Metric space, at this time, if having fallen the object of some metals on wireless transmission end-coil, such as key, iron nail and coin, coil
Between the magnetic field of high-frequency alternating metallic foreign body is heated by electromagnetic induction, temperature can rise rapidly between coil, and there are certain fire
Calamity risk.
A kind of wireless charging system and its metal foreign matter detecting method are disclosed in Chinese invention patent CN105790324A,
The utility model makes a wireless charging device and a power device be arranged in a charged area, and the wireless power consumption device is mainly by one
Signal conversion module connects a controller and is formed with one for launching the transmission antenna of signal respectively, and by the signal modulus of conversion
Block is connected with power end, which receives end-coil with one and connect a rectifier and electric current of generation is defeated by output terminal
Go out；Before wireless charging device and power device start wireless charging or charged, the control of the wireless charging device
Device can detect the electricity consumption condition of the transmission antenna, voltage/current information and its phase information, and gold is determined whether with instant
Belong to foreign matter intrusion, avoid because metallic foreign body produce high temperature and caused by equipment damage and danger, with reach lifting wireless charging peace
The purpose of full property.
In above-mentioned existing patent, although Pass through above-mentioned technical proposal can detect metallic foreign body, because metallic foreign body compares
When big, the eddy-current loss of generation is more, can be easier to detect, but when metallic foreign body is smaller, sends out thermogenetic and be vortexed damage
Very little is consumed, at this time, it is necessary to improve the accuracy of detection of system, metallic foreign body is identified could exactly.And above-mentioned patent
Scheme for metallic foreign body it is smaller when, it is clear that cannot accurately identify.
The content of the invention
To solve the above-mentioned problems, the utility model provides a kind of inspection of radio energy transmission system and its metallic foreign body
Survey method, the utility model first identify different with the presence or absence of metal between transmitting and receiving coil before the work of radio energy system
Thing, ensure that safe and reliable, the steady operation of whole radio energy transmission system.
In order to achieve the above object, the technical solution adopted in the utility model is：
A kind of radio energy transmission system, including the wireless transmitting terminals and wireless receiving of energy and communications can be carried out
End, wireless transmitting terminals are connected to power grid, including can transmit the transmitting coil of radio energy, and wireless transmitting terminals further include transmitting terminal
MCU, and the transmitting terminal resonant capacitance being arranged between power grid and transmitting coil electrical energy inputs serial or parallel connection is connected to,
The both ends of transmitting terminal resonant capacitance are arranged in parallel available for the metallic foreign body detection circuit detected whether there are metallic foreign body, hair
The sample circuit of transmitting coil voltage can be gathered by being provided between ray circle and transmitting terminal MCU, and transmitting terminal MCU is electrically electrically connected gold
Belong to foreign bodies detection circuit, whether to control the startup of metallic foreign body detection circuit.
As the further optimization of the utility model, metallic foreign body detection circuit includes that transmitting coil voltage or electricity can be gathered
The sample circuit of signal is flowed, is parallel to the capacitance C1 of transmitting terminal resonant capacitance both sides, and the relay being in series with capacitance C1
Electric-controlled switch, wherein, the output terminal connection transmitting terminal MCU of sample circuit, electric-controlled switch relay is in series with relay driving electricity
Road drive control circuit, transmitting terminal MCU connection relay drive circuit drive control circuits, to control electric-controlled switch relay
It is attracted.
As the further optimization of the utility model, transmitting terminal MCU includes gathering adopting for voltage signal in sample circuit
Collect module, can determine whether the judgment module for having metallic foreign body, the startup whether controllable metallic foreign body detection circuit starts
Module, and the control module of controllable wireless transmitting terminals output frequency, wherein, acquisition module is electrically connected judgment module, with
Judge whether there is metallic foreign body according to the voltage signal of acquisition module；Starting module is electrically connected relay drive circuit driving
Control circuit, to control the actuation of relay electric-controlled switch.
As the further optimization of the utility model, transmitting terminal MCU, which further comprises having, prestores the pre- of reference voltage value
Storing module, compared with reference voltage value and the comparison module of comparison signal, Yi Jike are exported by magnitude of voltage in Acquisition Circuit
The counter counted to the high level exported in comparison module；Wherein, comparison module be electrically connected at the same time pre- storing module with
And acquisition module, comparison module are electrically connected counter, the comparison signal of comparison module are exported to counter；Counter electricity
Property connection judgment module, the high level number that judgment module is exported according to counter judge whether metallic foreign body.
As the further optimization of the utility model, transmitting terminal resonant capacitance serial or parallel connection is in transmitting coil.
As the further optimization of the utility model, wireless transmitting terminals further comprise the transmitting for being connected to power grid output terminal
Current rectifying and wave filtering circuit is held, the output terminal of transmitting terminal current rectifying and wave filtering circuit is connected with inverter circuit, transmitting coil connection inverter circuit
Output terminal, transmitting terminal resonant capacitance is arranged between inverter circuit and transmitting coil.
As the further optimization of the utility model, wireless transmitting terminals further comprise the channel radio that can receive communication signal
Believe receiving module；Connect load outside wireless receiving end, including the receiving coil of transmitting coil electric energy can be received, can be defeated by receiving coil
Go out electric energy and be converted into the wireless communication transmitting module that communication signal is transmitted to wireless communication receiver module.
As the further optimization of the utility model, being equipped with transmitting coil can induced emission coil and receiving coil position
Proximity sensor, proximity sensor according to transmitting coil and receiving coil distance formed inductive signal, proximity sensing
Device is connected with transmitting terminal MCU, to receive the inductive signal of proximity sensor formation；Transmitting terminal MCU is electrically connected with voltage stabilizing electricity
Road, the pwm signal that regulator circuit is exported according to transmitting terminal MCU export corresponding frequencies, the output terminal connection inversion electricity of regulator circuit
Road.
As the further optimization of the utility model, receiving coil, which is built-in with, can strengthen proximity sensor induction
Inductor.
As the further optimization of the utility model, the receiving coil at wireless receiving end is connected with receiving terminal resonant capacitance,
The other end connection current rectifying and wave filtering circuit of receiving terminal resonant capacitance, the output terminal connection rectified voltage sampling electricity of current rectifying and wave filtering circuit
Road and receiving terminal regulator circuit, the output terminal of receiving terminal regulator circuit are connected with output current voltage sampling circuit, output current
The output terminal of voltage sample module and the output terminal of output voltage sampling circuit are all connected with receiving terminal MCU, and receiving terminal MCU connections are logical
Believe transmitting module, transformed digital data transmission to the transmitting module that communicates is formed into communication signal.
A kind of metal foreign matter detecting method of radio energy transmission system, using radio energy transmission system described above,
Comprise the following steps：
S1：Radio energy transmission system is powered；
S2：Relay drive circuit drive control circuit relay electric-controlled switch is attracted, and starts metallic foreign body detection
Circuit；
S3：After transmitting terminal MCU is with operation to the preset time T of predeterminated frequency f1 driving wireless transmitting systems, transmitting terminal MCU
Turn off the control to regulator circuit and relay drive circuit drive control circuit；
S4：Transmitting coil voltage after transmitting terminal MCU collection disconnections, and output ratio is compared with the reference voltage to prestore
Compared with signal, wherein, high level is exported when collection voltages are higher than reference voltage, is exported when collection voltages are less than reference voltage low
Level；
S5：Comparison module receives comparison signal, and counts the number n of output high level, and with prestoring in transmitting terminal MCU
Benchmark number N is compared, if n<N, and continue to operate S6；Conversely, then continue to operate S7；
S6：Output radio energy transmission system has metallic foreign body signal, and radio energy transmission system, which is stopped power supply, goes forward side by side
Enter and investigate program, S1 is returned after the completion of investigation；
S7：Metallic foreign body is not present in radio energy transmission system, then relay electric-controlled switch close, transmitting terminal MCU with
Working frequency f2 control regulator circuit outputs, and enter the electric energy transmission program of radio energy transmission system.
Compared with prior art, it is the advantages of the utility model with good effect：
1st, the radio energy transmission system of the utility model, it is provided with metal detection circuit, can be in wireless power transmission
The presence of metallic foreign body is detected whether before system operation, ensure that the safe and reliable, stable of whole radio energy transmission system
Work；
2nd, the metal foreign matter detecting method of the utility model radio energy transmission system, its by the control of different frequency,
Effectively metallic foreign body is detected before radio energy transmission system work, meanwhile, because of the adjustment of frequency, can accurately examine
Smaller metallic foreign body is surveyed, more accurately.
Brief description of the drawings
Fig. 1 for no metallic foreign body when transmitting coil voltage oscillation decay oscillogram；
Fig. 2 is transmitting coil voltage oscillation decay oscillogram when having metallic foreign body；
Fig. 3 is the block diagram representation of the first embodiment of the utility model radio energy transmission system；
Fig. 4 is the block diagram representation of second of embodiment of the utility model radio energy transmission system；
Fig. 5 is the topological diagram of metallic foreign body detection circuit；
Fig. 6 is the metal foreign matter detecting method flow chart of the utility model wireless power transmission.
Wherein, 1, wireless transmitting terminals；11st, transmitting coil；12nd, metallic foreign body detection circuit；2nd, wireless receiving end；21st, connect
Take-up circle.
Embodiment
In the following, the utility model is specifically described by exemplary embodiment.It should be appreciated, however, that do not having
In the case of being further discussed below, element, structure and features in an embodiment can also be advantageously incorporated into other implementations
In mode.
, it is necessary to explanation, term " interior ", " outer ", " on ", " under ", "front", "rear" etc. in the description of the utility model
The orientation or position relationship of instruction are based on position relationship shown in the drawings, are for only for ease of description the utility model and simplification
Description, rather than the device or element of instruction or hint meaning must have specific orientation, with specific azimuth configuration and behaviour
Make, therefore it is not intended that limitation to the utility model.
Before the utility model is illustrated, first of all for the understanding easy to those skilled in the art, applicant is with regard to this practicality
New creation principle is summarized as follows：When radio energy transmission system works normally, pass through between transmitting coil and receiving coil
The magnetic field that resonance produces high-frequency alternating carries out energy transmission, and therefore, some energy will be used for establishing magnetic in transmitting coil
.When transmitting terminal MCU produces pwm signal output, wireless transmitting terminals provide energy, are used for establishing magnetic field first, magnetic field is established
Afterwards, wireless receiving end ability interrogation energy, and when transmitting terminal MCU closes pwm signal output, wireless transmitting terminals stop energy and supply
Give, but the energy for being used for establishing magnetic field in transmitting coil can't disappear at once, but rely on the internal resistance of transmitting coil itself to damage
Consumption produces oscillatory extinction, and voltage signal is gradually reduced on coil, until being zero, waveform is as shown in Figure 1；And deposited when on transmitting coil
In metallic foreign body, the decay of the energy stored in transmitting coil is then changed into the vortex of coil itself internal resistance loss and metallic foreign body
Two parts are lost, energy attenuation process can accelerate, and the time that coil voltage decays to needed for zero will reduce, waveform such as Fig. 2 institutes
Show.Since the internal resistance of coil is changeless, in order to realize the detection to minute metallic foreign matter, it is necessary to improve metallic foreign body
Accounting of the eddy-current loss in total losses, the influence ratio that the addition of such metallic foreign body will be to energy attenuation in transmitting coil
Larger, when carrying out wave number detection, the change of wave number also can be bigger, it is easier to small change is detected, so as to provide
The accuracy of detection of whole system.Simultaneously as radio energy transmission system is operated in alternating electromagnetic field, either coupling
In coil, or all there are the kelvin effect of high frequency in metallic foreign body, that is, the frequency of the electric current produced (or vortex flow) is higher, wears
Saturating depth is smaller, and electric current mainly flows through on the surface of conductor, due to power transmission coil generally use Litz wire (multiply enamel-cover
Line), reach maximum penetration, its internal resistance will not be had an impact by reducing frequency, and the penetration depth of metallic foreign body can be with
The reduction of frequency and increase, the eddy-current loss produced on metallic foreign body can significantly increase, metallic foreign body loss accounting will
Increase therewith.
As shown in Figure 3, Figure 4, the utility model provides a kind of radio energy transmission system, including can carry out energy and lead to
Believe wireless transmitting terminals 1 and the wireless receiving end 2 of transmission, wherein, wireless transmitting terminals 1 are connected to power grid, including can transmit radio
The transmitting coil 11 of energy, wireless transmitting terminals further include transmitting terminal MCU, and are connected to the transmitting terminal resonance electricity of transmitting coil 11
Hold, the both ends of transmitting terminal resonant capacitance are arranged in parallel available for the metallic foreign body detection circuit detected whether there are metallic foreign body
12, transmitting terminal MCU are electrically connected metallic foreign body detection circuit, whether to control the startup of metallic foreign body detection circuit.Wherein, this reality
In new, transmitting coil 11 and transmitting terminal resonant capacitance can series system as shown in Figure 3, it is or as shown in Figure 4
Parallel way.
Referring to Fig. 5, be described in further detail, above-mentioned metallic foreign body detection circuit 12 include can gathering in transmitting coil 11 voltage or
The sample circuit of current signal, is parallel to the capacitance C1 of transmitting terminal resonant capacitance both sides, and is in series with capacitance C1 automatically controlled
Switch, wherein, the output terminal connection transmitting terminal MCU of sample circuit, electric-controlled switch is in series with drive control circuit, transmitting terminal MCU
Drive control circuit is connected, to control the actuation of electric-controlled switch.The metallic foreign body detection circuit, the stage is transmitted in normal energy,
Electric-controlled switch disconnects, and only original resonant capacitance participates in system work, i.e., does not influence the normal work of radio energy transmission system
Make；When carrying out metallic foreign body detection, electric-controlled switch is attracted, and capacitance C1 is in parallel with transmitting terminal resonant capacitance, increases wireless hair
The overall resonant capacitance value in end is penetrated, equivalent to the resonant frequency for reducing radio energy transmission system, can be realized accurate and effective
Detection, improve metallic foreign body detection accuracy of detection.Herein it should be noted that above-mentioned electric-controlled switch can be relay,
MOSFT, IGBT etc., are specially a certain switch to it and unlimited as long as it can control whether the circuit of capacitance C1 connects
It is fixed.
In addition, in the Fig. 5, metallic foreign body detection circuit 12 further comprises voltage comparator U1, can play partial pressure work
Resistance R1, resistance R2, collectively constitute the diode D1 and resistance R3 of half-wave rectifying circuit, and current-limiting resistance R4.Wherein,
Resistance R1, resistance R2 carry out transmitting coil voltage decompression processing, and half-wave rectifying circuit utilizes the one-way conduction characteristic of diode
To carry out the circuit common of rectification, output obtains the positive half of sine wave, and negative half then loses, alternating current is converted to
Rectified alternating current.Current-limiting resistance burns out voltage comparator to limit the size of place branch current to prevent electric current is excessive.It is above-mentioned
In, sampled voltage is the Rectified alternating current of only positive half, slowly shakes decay with LC itself intrinsic frequencies.Preset a base
Quasi- magnitude of voltage, when sampled voltage is more than reference voltage, comparator exports high level, when sampled voltage is less than reference voltage when ratio
Low level is exported compared with device.The voltage signal of metallic foreign body detection circuit collection transmitting coil is sent into comparator and is carried out with reference voltage
After be changed into low and high level signal.
With reference to shown in Fig. 3 and Fig. 4, transmitting terminal MCU includes the acquisition module that can gather voltage signal in sample circuit, can sentence
The disconnected judgment module for whether having metallic foreign body, the starting module whether controllable metallic foreign body detection circuit starts, Yi Jike
The control module of wireless transmitting terminals output frequency is controlled, wherein, acquisition module is electrically connected judgment module, with according to acquisition module
Voltage signal judge whether there is metallic foreign body；Starting module is electrically connected drive control circuit, to control electric-controlled switch
It is attracted.Transmitting terminal MCU further comprises there is the pre- storing module for prestoring reference voltage value, by magnitude of voltage in Acquisition Circuit and benchmark
Magnitude of voltage is compared and exports the comparison module of comparison signal, and the high level that exported in comparison module can be counted
Counter；Wherein, comparison module is electrically connected pre- storing module and acquisition module at the same time, and comparison module, which is electrically connected, to be counted
Device, the comparison signal of comparison module is exported to counter；Counter is electrically connected judgment module, and judgment module is according to counting
The high level number of device output judges whether metallic foreign body.
With continued reference to Fig. 3 and Fig. 4, wireless transmitting terminals further comprise the transmitting terminal rectifying and wave-filtering for being connected to power grid output terminal
Circuit, the output terminal of transmitting terminal current rectifying and wave filtering circuit are connected with inverter circuit, and transmitting coil connects the output terminal of inverter circuit, hair
End resonant capacitance is penetrated to be arranged between inverter circuit and transmitting coil.Wireless transmitting terminals further comprise that communication signal can be received
Wireless communication receiver module；Connect load outside wireless receiving end, including the receiving coil of transmitting coil electric energy can be received, will can receive
Coil output electric energy is converted into the wireless communication transmitting module that communication signal is transmitted to wireless communication receiver module.Wireless receiving end
Receiving coil be connected with receiving terminal resonant capacitance, the other end connection current rectifying and wave filtering circuit of receiving terminal resonant capacitance, rectification filter
The output terminal connection rectified voltage sample circuit and receiving terminal regulator circuit of wave circuit, the output terminal connection of receiving terminal regulator circuit
There are output current voltage sampling circuit, the output terminal of output current voltage sample module and the output terminal of output voltage sampling circuit
It is all connected with receiving terminal MCU, receiving terminal MCU connection communication transmitting modules, by transformed digital data transmission to the transmitting that communicates
Module forms communication signal.
Hair can be sensed by being equipped with order to which whether real-time induction wireless receiving terminal is entered in working range, in transmitting coil
Ray circle and the proximity sensor of receiving coil position, proximity sensor are formed according to transmitting coil and receiving coil distance
Inductive signal, proximity sensor are connected with transmitting terminal MCU, to receive the inductive signal of proximity sensor formation；Transmitting terminal
MCU is electrically connected with regulator circuit, and the pwm signal that regulator circuit is exported according to transmitting terminal MCU exports corresponding frequencies, regulator circuit
Output terminal connection inverter circuit.Preferably, receiving coil is built-in with the inductor that can strengthen proximity sensor induction.
By above-mentioned radio energy transmission system, further illustrate and its method of work is described in detail：Radio energy transmission system work
When making, take alternating current to enter transmitting terminal current rectifying and wave filtering circuit from power grid, industrial-frequency alternating current is changed into direct current；Then, transmitting terminal
MCU control circuit produces PWM drive signal, direct current is converted high-frequency alternating current after inverter circuit, launches for encouraging
The resonance coil at end；End-coil is received by magnetic coupling interrogation energy, and passes through receiving terminal rectifier filter circuit, then it is defeated
Go out direct current.The direct current passes through voltage required for DC/DC regulator circuit output loading equipment；When load change, device parameters
The stability of whole system work can be all influenced when drift, temperature rise change.In order to realize that stablizing for radio energy transmission system is transported
OK, at wireless receiving end and wireless transmitting terminals increase communication module, the status information at wireless receiving end is returned into wireless transmission
End, realizes the closed-loop control of whole radio energy system.In this process, the receiving terminal MCU at wireless receiving end can be sampled defeated
Go out the rectified voltage signal of side, and by being attached thereto the channel radio that wireless communication transmitting module is sent to wireless transmission end equipment
Believe receiving module；The outlet side rectified voltage value that transmitting terminal MCU can be returned according to the wireless communication receiver module being attached thereto, is adjusted
PWM frequency, duty cycle or phase are saved to stablize output rectified voltage；Proximity sensor is then used for discriminating whether to receive end-coil
Into system work area domain.The metallic foreign body detection circuit that the utility model is set is then whether to have metal between detection coil
Foreign matter.
Referring to Fig. 6, the utility model additionally provides a kind of metal foreign matter detecting method of radio energy transmission system, uses
Above-mentioned radio energy transmission system, comprises the following steps：
S1：Radio energy transmission system is powered, system initialization；
S2：Drive control circuit electric-controlled switch is attracted, and starts metallic foreign body detection circuit, to carry out radio energy biography
Metallic foreign body detection before defeated system power supply；
S3：After transmitting terminal MCU is with operation to the preset time T of predeterminated frequency f1 driving wireless transmitting systems, transmitting terminal MCU
Turn off the control to regulator circuit and drive control circuit；Wherein, in step, predeterminated frequency f1 is less than working frequency f2,
So as to which if within the system there are metallic foreign body, the eddy-current loss produced on metallic foreign body can significantly increase, metallic foreign body
The accounting of loss will increase therewith, can more accurately detect the presence of metallic foreign body；
S4：Transmitting coil voltage after transmitting terminal MCU collection disconnections, and output ratio is compared with the reference voltage to prestore
Compared with signal, wherein, high level is exported when collection voltages are higher than reference voltage, is exported when collection voltages are less than reference voltage low
Level；It should be noted that reference voltage can choose the arbitrary value more than 0 in the step, it chooses benchmark generally according to work(
Rate grade, coil size etc. determine.The reference voltage should not be too large at the same time, excessive to reduce accuracy of detection；Also it is unsuitable at the same time
It is too small, it can introduce unnecessary noise information because too small.
S5：Comparison module receives comparison signal, and counts the number n of output high level, and with prestoring in transmitting terminal MCU
Benchmark number N is compared, if n<N, and continue to operate S6；Conversely, then continue to operate S7；Benchmark number N herein is no gold
When belonging to foreign matter, the number of reference voltage is more than after the decay of transmitting coil voltage oscillation, i.e. on the selection of the benchmark number is decided by
State the selection of reference voltage；
S6：Output radio energy transmission system has metallic foreign body signal, and radio energy transmission system, which is stopped power supply, goes forward side by side
Enter and investigate program, S1 is returned after the completion of investigation；It may include alert program in the investigation program, have metallic foreign body letter with prompting
Number；In the step, due to the presence of capacitance C1, the frequency of the oscillatory extinction of radio energy system is caused to reduce, on metallic foreign body
The eddy-current loss of generation significantly increases, and metallic foreign body loss accounting increase, transmitting coil voltage attenuation concussion speed is accelerated so that
The pulse number of voltage sampling circuit collection output tails off, and cannot carry out electric energy transmission at this time, and should send and detect gold
Belong to the alarm of foreign matter；
S7：Metallic foreign body is not present in radio energy transmission system, then electric-controlled switch is closed, and transmitting terminal MCU is with the frequency that works
Rate f2 control regulator circuit outputs, and enter the electric energy transmission program of radio energy transmission system.
A little it is to add metallic foreign body detection circuit it should be noted simultaneously that its in the utility model is mainly created, it is right
Other structures in the radio energy transmission system, including transmitting terminal MCU, receiving terminal MCU, functional circuit etc. are this area
What technical staff can readily occur in, its inside concrete structure or circuit unit etc. are repeated no more in this patent, meanwhile, root
According to above-mentioned technical proposal disclosed in the utility model and it is known in the art that those skilled in the art also can uniquely also originally
Technical solution.
Claims (8)
1. a kind of radio energy transmission system, including wireless transmitting terminals and the wireless receiving end of energy and communications can be carried out,
Wireless transmitting terminals are connected to power grid, including can transmit the transmitting coil of radio energy, it is characterised in that：Wireless transmitting terminals further include
Transmitting terminal MCU, and the transmitting terminal resonant capacitance of transmitting coil electrical energy inputs is connected to, the both ends of transmitting terminal resonant capacitance are simultaneously
Connection is provided with available for the metallic foreign body detection circuit detected whether there are metallic foreign body, and it is different that transmitting terminal MCU is electrically connected metal
Quality testing slowdown monitoring circuit, whether to control the startup of metallic foreign body detection circuit, wherein metallic foreign body detection circuit includes that hair can be gathered
Penetrate the sample circuit of coil voltage or current signal, be parallel to the capacitance C1 of transmitting terminal resonant capacitance both sides, and with capacitance C1
The electric-controlled switch being in series, wherein, the output terminal connection transmitting terminal MCU of sample circuit, electric-controlled switch is in series with drive control electricity
Road, transmitting terminal MCU connection drive control circuits, to control the actuation of electric-controlled switch.
2. radio energy transmission system according to claim 1, it is characterised in that：Transmitting terminal MCU includes that sampling electricity can be gathered
The acquisition module of voltage signal in road, can determine whether the judgment module for having metallic foreign body, can control metallic foreign body detection electricity
The starting module whether road starts, and the control module of controllable wireless transmitting terminals output frequency, wherein, acquisition module is electrical
Connection judgment module, to judge whether having metallic foreign body according to the voltage signal of acquisition module；Starting module, which is electrically connected, drives
Dynamic control circuit, to control the actuation of electric-controlled switch.
3. radio energy transmission system according to claim 2, it is characterised in that：Transmitting terminal MCU further comprises prestoring
There is the pre- storing module of reference voltage value, magnitude of voltage in Acquisition Circuit compared with reference voltage value and is exported into comparison signal
Comparison module, and the counter that the high level exported in comparison module can be counted；Wherein, comparison module is electrical at the same time
Connect pre- storing module and acquisition module, comparison module is electrically connected counter, by the comparison signal of comparison module export to
Counter；Counter is electrically connected judgment module, and the high level number that judgment module is exported according to counter judges whether
Metallic foreign body.
4. according to radio energy transmission system any one of claim 1-3, it is characterised in that：Transmitting terminal resonant capacitance string
Join or be parallel to transmitting coil.
5. according to radio energy transmission system any one of claim 1-3, it is characterised in that：Wireless transmitting terminals are further
Transmitting terminal current rectifying and wave filtering circuit including being connected to power grid output terminal, the output terminal of transmitting terminal current rectifying and wave filtering circuit are connected with inversion
Circuit, transmitting coil connect the output terminal of inverter circuit, and transmitting terminal resonant capacitance is arranged between inverter circuit and transmitting coil.
6. radio energy transmission system according to claim 5, it is characterised in that：Wireless transmitting terminals further comprise receiving
The wireless communication receiver module of communication signal；Connect load outside wireless receiving end, including the reception line of transmitting coil electric energy can be received
Receiving coil, can be exported electric energy and be converted into the wireless communication transmitting mould that communication signal is transmitted to wireless communication receiver module by circle
Block.
7. radio energy transmission system according to claim 6, it is characterised in that：Being equipped with transmitting coil can induced emission line
Circle and the proximity sensor of receiving coil position, proximity sensor are formed and sensed according to transmitting coil and receiving coil distance
Signal, proximity sensor are connected with transmitting terminal MCU, to receive the inductive signal of proximity sensor formation；Transmitting terminal MCU electricity
Property be connected with regulator circuit, the pwm signal that regulator circuit is exported according to transmitting terminal MCU exports corresponding frequencies, regulator circuit it is defeated
Outlet connects inverter circuit.
8. radio energy transmission system according to claim 7, it is characterised in that：The receiving coil at wireless receiving end is connected with
Receiving terminal resonant capacitance, the other end connection current rectifying and wave filtering circuit of receiving terminal resonant capacitance, the output terminal of current rectifying and wave filtering circuit connect
Rectified voltage sample circuit and receiving terminal regulator circuit are connect, the output terminal of receiving terminal regulator circuit is connected with output current voltage and adopts
Sample circuit, the output terminal of output current voltage sample module and the output terminal of output voltage sampling circuit are all connected with receiving terminal MCU,
Receiving terminal MCU connection communication transmitting modules, communication signal is formed by transformed digital data transmission to the transmitting module that communicates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720754382.6U CN207339431U (en) | 2017-06-27 | 2017-06-27 | Radio energy transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720754382.6U CN207339431U (en) | 2017-06-27 | 2017-06-27 | Radio energy transmission system |
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| Publication Number | Publication Date |
|---|---|
| CN207339431U true CN207339431U (en) | 2018-05-08 |
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| CN201720754382.6U Active CN207339431U (en) | 2017-06-27 | 2017-06-27 | Radio energy transmission system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134858A (en) * | 2017-06-27 | 2017-09-05 | 青岛鲁渝能源科技有限公司 | Radio energy transmission system and its metal foreign matter detecting method |
| CN109038856A (en) * | 2018-08-07 | 2018-12-18 | 吉林大学 | A kind of real-time resonant-gate wireless electric vehicle charging device |
| CN110277836A (en) * | 2019-05-23 | 2019-09-24 | 新纳传感系统有限公司 | Wireless power transmitter and wireless power transmission system |
| CN111030314A (en) * | 2019-11-15 | 2020-04-17 | 北京宇航系统工程研究所 | Carrier rocket ground high-power wireless power supply system based on electromagnetic resonance |
| WO2023226615A1 (en) * | 2022-05-25 | 2023-11-30 | 荣耀终端有限公司 | Wireless charging apparatus, electronic device and wireless charging control method |
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2017
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| CN109038856B (en) * | 2018-08-07 | 2022-03-08 | 吉林大学 | Real-time resonance control type wireless charging device for electric automobile |
| CN110277836A (en) * | 2019-05-23 | 2019-09-24 | 新纳传感系统有限公司 | Wireless power transmitter and wireless power transmission system |
| CN110277836B (en) * | 2019-05-23 | 2021-04-09 | 新纳传感系统有限公司 | Wireless power transmitter and wireless power transfer system |
| CN111030314A (en) * | 2019-11-15 | 2020-04-17 | 北京宇航系统工程研究所 | Carrier rocket ground high-power wireless power supply system based on electromagnetic resonance |
| WO2023226615A1 (en) * | 2022-05-25 | 2023-11-30 | 荣耀终端有限公司 | Wireless charging apparatus, electronic device and wireless charging control method |
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