CN206517166U - Unicoil switching circuit - Google Patents
Unicoil switching circuit Download PDFInfo
- Publication number
- CN206517166U CN206517166U CN201720264268.5U CN201720264268U CN206517166U CN 206517166 U CN206517166 U CN 206517166U CN 201720264268 U CN201720264268 U CN 201720264268U CN 206517166 U CN206517166 U CN 206517166U
- Authority
- CN
- China
- Prior art keywords
- coupler
- wireless charging
- photo
- switching circuit
- nfc
- 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.)
- Withdrawn - After Issue
Links
- 238000007600 charging Methods 0.000 claims abstract description 92
- 102100026396 ADP/ATP translocase 2 Human genes 0.000 claims description 7
- 101000718417 Homo sapiens ADP/ATP translocase 2 Proteins 0.000 claims description 7
- 102100032533 ADP/ATP translocase 1 Human genes 0.000 claims description 6
- 101000768061 Escherichia phage P1 Antirepressor protein 1 Proteins 0.000 claims description 6
- 101000796932 Homo sapiens ADP/ATP translocase 1 Proteins 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 5
- 210000001699 lower leg Anatomy 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 9
- 238000004891 communication Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000008713 feedback mechanism Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model is related to wireless charging technical field, specifically related to unicoil switching circuit, it includes wireless charging module, microcontroller, NFC module, switching circuit and coil, the microcontroller, wireless charging module, NFC module and coil are electrically connected with switching circuit, the microcontroller sends a control signal to switching circuit, control switching circuit is switched between the first circuit path and second circuit passage, the first circuit path connection NFC module and coil, the second circuit passage connection wireless charging module and coil.The utility model is used in wireless charging transmitting terminal system, easy to operate, and performance is stable, and wireless charging and NFC mutually switch, do not interfere with each other, the efficient stable of common guarantee wireless charging process.
Description
Technical field
The utility model is related to wireless charging technical field, and in particular to unicoil switching circuit.
Background technology
With the continuous progress of wireless charging skill technology, wireless charger with wireless charging function and equipment is electrically charged
Also make rapid progress.Existing wireless charger is generally charged by the way of electromagnetic induction to being electrically charged equipment, at some
With in scene, during due to other loads occur in wireless charging energy electromagnetic, the wireless charger generally also can persistently be given
Energy is given, so as to cause to heat and damage equipment, or even potential safety hazard is produced.Furthermore, in order to ensure the ageing of wireless charging,
The charging transmitting terminal of usual wireless charger is constantly in opening, and which results in energy consumption under no load
Waste.
The content of the invention
Therefore, the utility model provides a kind of unicoil switching circuit, it is used in wireless charging transmitting terminal system, grasps
Make easy, performance is stable, wireless charging and NFC mutually switch, do not interfere with each other, common guarantee wireless charging process it is efficient steady
It is fixed.
To achieve the above object, the utility model provides unicoil switching circuit, and it includes wireless charging module, micro-control
Device processed, NFC module, switching circuit and coil, the microcontroller, wireless charging module, NFC module and coil are and switching is electric
Road is electrically connected with, and the microcontroller sends a control signal to switching circuit, and control switching circuit is in the first circuit path and the
Switched between two circuit paths, the first circuit path connection NFC module and coil, the second circuit passage connection
Wireless charging module and coil.
Further, the switching circuit includes the first photo-coupler U1, the second photo-coupler U2, the 3rd photo-coupler U3
With the 4th photo-coupler U4, the microcontroller is model nRF52832 MCU, and the wireless charging module is model
MAP7201 WP,
Wherein the first photo-coupler U1 and the 4th photo-coupler U4 control end is connected, and the end is by MCU the first I/O port
SW1 is controlled, and the first load end of the first photo-coupler U1 is connected to one end ANT1 of coil, the first photo-coupler U1
The second load end be connected to the WP_ANT1 pin of wireless charging module, the first load end connection of the 4th photo-coupler U4
To the WP_ANT2 pin of wireless charging module, the second load end of the 4th photo-coupler U4 is connected to the other end of coil
Matching connection electric capacity C1 between ANT2, and the WP_ANT1 pin and WP_ANT2 pin of wireless charging module, second photo-coupler
U2 and the 3rd photo-coupler U3 control end are connected, and the end is controlled by MCU the second I/O port SW2, second photo-coupler
The second load that U2 the first load is connected to the first pin NFC_ANT1, the second photo-coupler U2 of NFC module is connected to
One end ANT1 of coil, the 3rd photo-coupler U3 the first load are connected to the other end ANT2 of coil, the 3rd light
Coupler U3 the second load is connected to the crus secunda NFC_ANT2 of NFC module, and the first pin NFC_ANT1 of NFC module and the
Matching connection electric capacity C2 between two pin NFC_ANT2.
Further, the switching circuit is constituted using relay and its peripheral circuit.
Further, the switching circuit is constituted using semiconductor switch and its peripheral circuit.
Prior art is different from, above-mentioned technical proposal has the advantages that：
1st, the technical solution of the utility model connects micro-control respectively by designing a switching circuit, switching circuit connection
Device processed, wireless charging module, NFC module and coil, and switching circuit is controlled in the first electricity by the control signal of microcontroller
Switched between paths and second circuit passage.The utility model is by accurately controlling, in wireless charging energy electromagnetic
When field inside is loaded, whole charging circuit automatically switches to second circuit passage from second circuit passage, it is to avoid energy
That measures persistently gives, so as to avoid whole wireless charging system from being generated heat and damaged or generation peace in the course of the work due to constantly place
Full hidden danger.
2nd, it is identified, intelligently can be carried out certainly between the first circuit path and second circuit passage using switching circuit
Dynamic switching, the transmitting terminal of wireless charging module is in opening without the moment, effectively saves power consumption.
3rd, the circuit in the utility model constantly can precisely be fed back in charging process and be electrically charged by NFC interfaces
The states such as the battery and temperature of equipment, so that more reliable and safer regulation transmitting terminal.
4th, by feedback mechanism, the transmitting terminal of wireless charging module can dynamically adjust power, adapt to transmitting and
The a variety of wireless charging distances of receiving terminal, and reduce overload or temperature that the waste of power and receiving terminal are likely to occur
Hidden danger.
5th, the utility model is by a switching coil of circuit communication one, by switching circuit in the first circuit path and second
Switching between circuit path, carries out intelligent switching, it is achieved thereby that using same line so as to realize between wireless charging NFC
Enclose the switching of the high-power and NFC small-power passages of adaptive wireless charging.Without separately being protected to NFC coils and circuit, again
The damage that NFC circuits can be avoided to be likely to result under high-power wireless charging energy of electromagnetic field.It is simultaneously high-power by what
Wireless charging energy will be interfered to NFC communication, it is necessary to which the energy of pause wireless charging is launched when using NFC communication, therefore
Single coil, which shares switching, can be fully solved the various problems of the above.
6th, the utility model is applied in wireless charging transmitting terminal system, easy to operate, and performance is stable, wireless charging and
NFC mutually switches, and does not interfere with each other, the efficient stable of common guarantee wireless charging process.Optical coupling is used in the utility model example
Device is switched between wireless charging circuit, and NFC circuit to sharing single coil.Similarly, the optical coupler can be it
His electronically controlled switching device, such as relay, or semiconductor switch etc..
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the circuit theory diagrams of the utility model embodiment 2.
Description of reference numerals：
1. wireless charging module, 2. microcontrollers, 3.NFC modules, 4. switching circuits, 5. microcontrollers.
Embodiment
To describe the technology contents of technical scheme in detail, feature, the objects and the effects being constructed, below in conjunction with specific reality
Apply example and coordinate accompanying drawing to be explained in detail.
Embodiment 1：
Refer to shown in Fig. 1, the unicoil switching circuit of the present embodiment 1, it includes wireless charging module 1, microcontroller
2nd, NFC module 3, switching circuit 4 and coil 5, the microcontroller 2, wireless charging module 1, NFC module 3 and coil 4 are equal and cut
Change circuit 4 to be electrically connected with, the microcontroller 2 sends a control signal to switching circuit, control switching circuit 4 is logical in the first circuit
Switched between road and second circuit passage, the first circuit path connection NFC module and coil, the second circuit lead to
Road connects wireless charging module and coil.NFC module technology maturation price stabilization is cheap.
Embodiment 2：
With reference to shown in Fig. 1 and Fig. 2, in order to further illustrate utility model, in the unicoil switching circuit of embodiment 2, row
A detailed circuit theory is lifted to carry out the utility model rationale, has been to embodiment 1 in the present embodiment 2
More detailed expansion, therefore all circuit structures in embodiment 1 are contained in the present embodiment 2, and in the present embodiment 2 more
For in detailed scheme, the switching circuit include the first photo-coupler U1, the second photo-coupler U2, the 3rd photo-coupler U3 and
4th photo-coupler U4, the microcontroller is model nRF52832 MCU, and the wireless charging module is model
MAP7201 WP, certainly in other embodiment, it would however also be possible to employ the microcontroller and wireless charging mould of other models
Block.
Wherein the first photo-coupler U1 and the 4th photo-coupler U4 control end is connected, and the end is by MCU the first I/O port
SW1 is controlled, and the first load end of the first photo-coupler U1 is connected to one end ANT1 of coil, the first photo-coupler U1
The second load end be connected to the WP_ANT1 pin of wireless charging module, the first load end connection of the 4th photo-coupler U4
To the WP_ANT2 pin of wireless charging module, the second load end of the 4th photo-coupler U4 is connected to the other end of coil
Matching connection electric capacity C1 between ANT2, and the WP_ANT1 pin and WP_ANT2 pin of wireless charging module, second photo-coupler
U2 and the 3rd photo-coupler U3 control end are connected, and the end is controlled by MCU the second I/O port SW2, second photo-coupler
The second load that U2 the first load is connected to the first pin NFC_ANT1, the second photo-coupler U2 of NFC module is connected to
One end ANT1 of coil, the 3rd photo-coupler U3 the first load are connected to the other end ANT2 of coil, the 3rd light
Coupler U3 the second load is connected to the crus secunda NFC_ANT2 of NFC module, and the first pin NFC_ANT1 of NFC module and the
Matching connection electric capacity C2 between two pin NFC_ANT2.
In further embodiments, the switching circuit can also use other electronically controlled switching devices, such as relay
Device, or semiconductor switch etc..It is simply interior using the circuit of relay or other semiconductor switch with the circuit of the present embodiment
Portion's realization principle optocoupler is to control rear class to switch by light, and relay is to control rear class to switch with electromagnetism.Only needed on circuit
Change U1/U2/U3/U4 into corresponding devices.Compare and relay, the switch motion of optocoupler is faster suitable for high frequency
The switching of signal.
NFC function is incorporated into wireless charging by the present embodiment, is used as the communication interface of wireless charging, it is ensured that wireless charging
Safety and stability；Give tacit consent to NFC mode of operations, effectively save energy consumption；Unicoil is connected respectively by the switching of photo-coupler
Into two different application circuits, by adjusting respective matching capacitance, it is ensured that two circuits can effectively work.
The operation principle of the present embodiment：
Under default situations, MCU control mouth SW1 is low and SW2 is high, and at this moment coil COIL passes through photo-coupler U2, U3
It is connected with NFC circuit, oscillating circuit is constituted with C2, at this moment wireless charging base is in NFC mode of operations, passes through NFC and the external world
Communication, has detected whether that equipment needs charging.Such as having detected equipment needs charging, then system automatically switches to wireless charging mould
Formula, while whether switchback NFC patterns at regular intervals, confirm charging equipment also on wireless charging base；Do not detect such as
To charging equipment, then system is in NFC patterns all the time, and at this moment system is in the low-power consumption stage, can effectively save.When SW1 is height
And SW2 for it is low when, coil is connected by photo-coupler U1, U4 with wireless charging circuit, with C1 composition oscillating circuits, and system is in
Wireless charging pattern, to the equipment charge being placed on wireless charging base.
The present embodiment applies to wireless charging base, and wireless charging base acquiescence is in into NFC mode of operations, detection
Whether there is equipment to need charging, greatly reduce system power dissipation, save the energy.Charging is needed when NFC module has detected equipment
When, the ID of identification equipment simultaneously records the information such as electricity while being switched to the pattern of wireless charging, so when there is many set wireless chargings
Equipment is charged simultaneously when, each transmitting terminal can accurately identify connected equipment, it is ensured that many complete equipments simultaneously charge without
It can influence each other.
Prior art is different from, the present embodiment has the advantages that：
1st, the technical solution of the utility model connects micro-control respectively by designing a switching circuit, switching circuit connection
Device processed, wireless charging module, NFC module and coil, and switching circuit is controlled in the first electricity by the control signal of microcontroller
Switched between paths and second circuit passage.The utility model is by accurately controlling, in wireless charging energy electromagnetic
When field inside is loaded, whole charging circuit automatically switches to second circuit passage from second circuit passage, it is to avoid energy
That measures persistently gives, so as to avoid whole wireless charging system from being generated heat and damaged or generation peace in the course of the work due to constantly place
Full hidden danger.
2nd, it is identified, intelligently can be carried out certainly between the first circuit path and second circuit passage using switching circuit
Dynamic switching, the transmitting terminal of wireless charging module is in opening without the moment, effectively saves power consumption.
3rd, the circuit in the utility model constantly precisely can feed back to be electrically charged and set by NFC interfaces in charging process
The state such as standby cell voltage and temperature, and then more reliable and safer regulation transmitting terminal.Regulatory function is the reality on software
Existing, by taking single battery core lithium ion or lithium polymer battery as an example, when detecting cell voltage less than 3v or more than 4.1v, now
Battery is in trickle or constant-voltage charge pattern, reduces the power of transmitting terminal；When detecting cell voltage between 3v-4.1v,
Now battery is in constant current charging mode, improves the power of transmitting terminal.
4th, by feedback mechanism, the transmitting terminal of wireless charging module can dynamically adjust power, adapt to transmitting and
The a variety of wireless charging distances of receiving terminal, and reduce overload or temperature that the waste of power and receiving terminal are likely to occur
Hidden danger.For example when the distance for detecting receiving terminal and transmitting terminal is 3cm, can reduce transmission power can meet receiving terminal
Power demands；And when the distance of receiving terminal and transmitting terminal is 8cm, now need the power for improving transmitting terminal to meet reception
The power demands at end.
5th, the utility model is by a switching coil of circuit communication one, by switching circuit in the first circuit path and second
Switching between circuit path, carries out intelligent switching, it is achieved thereby that using same line so as to realize between wireless charging NFC
Enclose the switching of the high-power and NFC small-power passages of adaptive wireless charging.Without separately being protected to NFC coils and circuit, again
The damage that NFC circuits can be avoided to be likely to result under high-power wireless charging energy of electromagnetic field.It is simultaneously high-power by what
Wireless charging energy will be interfered to NFC communication, it is necessary to which the energy of pause wireless charging is launched when using NFC communication, therefore
Single coil, which shares switching, can be fully solved the various problems of the above.
6th, the utility model is applied in wireless charging transmitting terminal system, easy to operate, and performance is stable, wireless charging and
NFC mutually switches, and does not interfere with each other, the efficient stable of common guarantee wireless charging process.Optical coupling is used in the utility model example
Device is switched between wireless charging circuit, and NFC circuit to sharing single coil.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or terminal device including a series of key elements not only include those
Key element, but also other key elements including being not expressly set out, or also include being this process, method, article or end
The intrinsic key element of end equipment.In the absence of more restrictions, limited by sentence " including ... " or " including ... "
Key element, it is not excluded that also there is other key element in the process including the key element, method, article or terminal device.This
Outside, herein, " being more than ", " being less than ", " exceeding " etc. are interpreted as not including this number；" more than ", " following ", " within " etc. understand
It is to include this number.
Although the various embodiments described above are described, those skilled in the art once know basic wound
The property made concept, then can make other change and modification to these embodiments, so the foregoing is only reality of the present utility model
Example is applied, scope of patent protection of the present utility model, every utilization the utility model specification and accompanying drawing content is not thereby limited
The equivalent structure or equivalent flow conversion made, or other related technical fields are directly or indirectly used in, similarly include
Within scope of patent protection of the present utility model.
Claims (4)
1. unicoil switching circuit, it is characterised in that including：It includes wireless charging module, microcontroller, NFC module, switching
Circuit and coil, the microcontroller, wireless charging module, NFC module and coil are electrically connected with switching circuit, described micro-
Controller sends a control signal to switching circuit, and control switching circuit is carried out between the first circuit path and second circuit passage
Switching, the first circuit path connection NFC module and coil, the second circuit passage connection wireless charging module and line
Circle.
2. unicoil switching circuit according to claim 1, it is characterised in that the switching circuit includes the first optical coupling
Device U1, the second photo-coupler U2, the 3rd photo-coupler U3 and the 4th photo-coupler U4, the microcontroller are model
NRF52832 MCU, the wireless charging module is model MAP7201 WP, wherein the first photo-coupler U1 and the 4th light
Coupler U4 control end is connected, and the end is controlled by MCU the first I/O port SW1, and the first of the first photo-coupler U1 is negative
One end ANT1 that end is connected to coil is carried, the second load end of the first photo-coupler U1 is connected to wireless charging module
WP_ANT1 pin, the first load end of the 4th photo-coupler U4 is connected to the WP_ANT2 pin of wireless charging module, described
Four photo-coupler U4 the second load end is connected to the other end ANT2 of coil, and the WP_ANT1 pin and WP_ of wireless charging module
Matching connection electric capacity C1 between ANT2 pin, the second photo-coupler U2 and the 3rd photo-coupler U3 control end are connected, and should
Hold and controlled by MCU the second I/O port SW2, the first load of the second photo-coupler U2 is connected to the first pin of NFC module
NFC_ANT1, the second photo-coupler U2 the second load are connected to one end ANT1, the 3rd photo-coupler U3 of coil
First load be connected to coil the other end ANT2, the 3rd photo-coupler U3 second load be connected to NFC module
Matching connection electric capacity C2 between crus secunda NFC_ANT2, and the first pin NFC_ANT1 and crus secunda NFC_ANT2 of NFC module.
3. unicoil switching circuit according to claim 1, it is characterised in that the switching circuit using relay and its
Peripheral circuit is constituted.
4. unicoil switching circuit according to claim 1, it is characterised in that the switching circuit uses semiconductor switch
And its peripheral circuit is constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720264268.5U CN206517166U (en) | 2017-03-17 | 2017-03-17 | Unicoil switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720264268.5U CN206517166U (en) | 2017-03-17 | 2017-03-17 | Unicoil switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206517166U true CN206517166U (en) | 2017-09-22 |
Family
ID=59870540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720264268.5U Withdrawn - After Issue CN206517166U (en) | 2017-03-17 | 2017-03-17 | Unicoil switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206517166U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849336A (en) * | 2017-03-17 | 2017-06-13 | 简极科技有限公司 | Switching circuit of the unicoil in wireless charging and the double applications of NFC |
-
2017
- 2017-03-17 CN CN201720264268.5U patent/CN206517166U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849336A (en) * | 2017-03-17 | 2017-06-13 | 简极科技有限公司 | Switching circuit of the unicoil in wireless charging and the double applications of NFC |
| CN106849336B (en) * | 2017-03-17 | 2018-06-05 | 简极科技有限公司 | Switching circuit of the unicoil in wireless charging and the double applications of NFC |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9954581B2 (en) | Apparatuses and related methods for communication with a wireless power receiver | |
| EP3925817A1 (en) | Chargeable-dischargeable energy storage apparatus, wireless charging system and electric vehicle | |
| CN104734315B (en) | A wireless charging control method for an electric vehicle battery | |
| US20160285278A1 (en) | Apparatuses and wireless power transmitters having multiple transmit coils and related method | |
| CN202444300U (en) | Wireless charging device | |
| US20140132077A1 (en) | Wireless power transmitter having low noise and high efficiency, and related methods | |
| CN105071551A (en) | Wireless energy transmission device | |
| CN210111623U (en) | Energy router for small-sized micro-grid | |
| US12218520B2 (en) | Wireless power transceiver device and an associated method thereof | |
| CN212784852U (en) | Battery management system for base station standby power supply | |
| CN206517166U (en) | Unicoil switching circuit | |
| CN206498462U (en) | Passive accumulation of energy charge mobile phone shell and mobile phone | |
| CN201995066U (en) | Standby power system and television applying same | |
| US10284014B2 (en) | Transceiving wireless power transmission device | |
| CN203039426U (en) | Induction power supply device with communication function | |
| CN104767292A (en) | A wireless power supply system for DC loads with adaptive switching between multiple voltage levels | |
| CN103904724A (en) | Battery management system free of low voltage connection | |
| CN201910626U (en) | Battery charging management system adopting noncontact energy transfer mode | |
| CN206422571U (en) | Wireless charging device and system | |
| CN106849336B (en) | Switching circuit of the unicoil in wireless charging and the double applications of NFC | |
| Guo et al. | Resonant wireless charging scheme | |
| WO2015083578A1 (en) | Contactless power transmission device and electricity reception apparatus | |
| CN117543848A (en) | Multi-load wireless charging system and method with directional energy transmission | |
| CN209233517U (en) | Charging circuit and charger | |
| CN204334129U (en) | A kind of magnetic suspension wireless charging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170922 Effective date of abandoning: 20180605 |