CN210608613U - Wireless charger with movable coil - Google Patents
Wireless charger with movable coil Download PDFInfo
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- CN210608613U CN210608613U CN201921735966.4U CN201921735966U CN210608613U CN 210608613 U CN210608613 U CN 210608613U CN 201921735966 U CN201921735966 U CN 201921735966U CN 210608613 U CN210608613 U CN 210608613U
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Abstract
The utility model relates to a wireless technical field that charges especially relates to a mobilizable wireless charger of coil, include: the detection component is used for detecting the position of a receiving coil of a device to be charged and comprises a plurality of induction coils, and the induction coils are crossed to form a detection area corresponding to the charging area; the driving part is connected with a transmitting coil and is used for moving the position of the transmitting coil; and the control part is a PCB, and the transmitting coil is welded on the PCB so that the PCB and the transmitting coil form an integral movable wireless charging module. Has the advantages that: the plurality of induction coils of the detection part are distributed in a crossed manner, so that copper laying in a detection area is reduced, and the charging efficiency is improved; the transmitting coil is directly welded on the PCB, so that the internal resistance of the transmitting coil is reduced.
Description
Technical Field
The utility model relates to a wireless technical field that charges especially relates to a mobilizable wireless charger of coil.
Background
With the rapid development of wireless charging technology, the use of wireless chargers is more and more common, and wireless chargers may be used for electronic devices such as mobile phones, tablet computers, digital cameras and the like. The wireless charger is a device which utilizes the principle of electromagnetic induction to charge, the principle is that a coil is respectively arranged at a transmitting end and a receiving end, the coil of the transmitting end sends out electromagnetic signals to the outside under the action of electric power, and the coil of the receiving end receives the electromagnetic signals and converts the electromagnetic signals into current, so that the purpose of wireless charging is achieved. Therefore, the relative positions of the transmitting-side coil and the receiving-side coil greatly affect the efficiency of charging.
In the existing wireless charger, the position of the transmitting end coil in the wireless charger is relatively fixed, and the wireless charger cannot automatically adapt to the position of the receiving end coil, so that a detection component needs to be additionally arranged to detect the position of the receiving end coil, and an MCU (Micro-controller Unit) adjusts the position of the transmitting end coil according to the position of the receiving end coil. The existing wireless charger still has the following problems: (1) the problem that the efficiency of wireless charging is affected by the copper laying in the detection area is more, as shown in fig. 1, the detection part is usually arranged on the back of the charging area, the detection part comprises a detection area formed by sequentially arranging a plurality of induction coils, and the copper laying area is larger; (2) the PCB and the transmitting coil need to be connected through a long FPC (Flexible Printed Circuit), so that the internal resistance of the transmitting coil is increased, the charging time of the transmitting coil is increased due to serious heating of the transmitting coil, and meanwhile, the packet loss probability is increased during communication due to the fact that the distance between the transmitting coil and the PCB is increased, and therefore the wireless charger stops charging.
Disclosure of Invention
In view of the above problems in the prior art, a wireless charger with a movable coil is provided.
The specific technical scheme is as follows:
the utility model relates to a mobilizable wireless charger of coil, include:
the detection component is used for detecting the position of a receiving coil of a device to be charged and comprises a plurality of induction coils, and the induction coils are crossed to form a detection area corresponding to a charging area;
the driving part is connected with a transmitting coil and is used for moving the position of the transmitting coil;
the control component is a PCB board, the transmitting coil is welded on the PCB board, so that the PCB board and the transmitting coil form an integral movable wireless charging module.
Preferably, the control means includes:
the control component is connected with the detection component through the detection processing module, and the detection processing module is used for processing a detection signal fed back by the detection component;
the operation module is connected with the detection processing module and used for calculating the position of the receiving coil according to the processed detection signal;
the driving module is connected with the operation module, the control part is connected with the driving part through the driving module, and the control module is used for forming a control signal according to the operation result of the operation module and sending the control signal to the driving part;
and the control component is connected with the transmitting coil through the charging control module and is used for starting the transmitting coil after the operation result output by the operation module shows that the transmitting coil and the receiving coil are positioned so as to charge the equipment to be charged.
Preferably, the detection processing module includes an operational amplifier for amplifying the detection signal.
Preferably, the driving part includes:
the wireless charging module is movably arranged on the guide rail;
the two ends of the guide rail are respectively arranged on a pair of parallel sliding rods, and the guide rail can move on the pair of sliding rods.
Preferably, the driving part further includes:
the first driving unit is connected with the wireless charging module and used for driving the wireless charging module to move on the guide rail;
and the second driving unit is connected with the guide rail and is used for driving the guide rail to move on the pair of slide bars.
Preferably, the first driving unit includes a gear and a first motor, the edge of the guide rail is provided with a saw tooth engaged with the gear, and the first motor is used for driving the gear to rotate so as to drive the wireless charging module to move on the guide rail.
Preferably, the second driving unit includes a transmission belt and a second motor, the transmission belt is disposed below the guide rail and contacts with the lower surface of the guide rail, and the second motor is used for driving the transmission belt, so that the transmission belt drives the guide rail to move on the pair of slide bars.
The utility model discloses technical scheme's beneficial effect lies in: the plurality of induction coils of the detection part are distributed in a crossed manner, so that copper laying in a detection area is reduced, and the charging efficiency is improved; the transmitting coil is directly welded on the PCB, FPC connection is not used, internal resistance of the transmitting coil is reduced, heating of the transmitting coil is reduced, meanwhile, the packet loss probability of the transmitting coil and the PCB during communication is reduced, and the stability of the wireless charger is improved.
Drawings
Embodiments of the present invention will be described more fully with reference to the accompanying drawings. The drawings are, however, to be regarded as illustrative and explanatory only and are not restrictive of the scope of the invention.
FIG. 1 is a schematic diagram of a prior art sensing assembly;
fig. 2 is a schematic structural diagram of a wireless charger in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a detection component in an embodiment of the present invention;
fig. 4 is a schematic block diagram of a wireless charger according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
The utility model discloses a mobilizable wireless charger of coil, as shown in fig. 4, include:
the detection component 1 is used for detecting the position of a receiving coil of a device to be charged and forming a detection signal, and the detection component 1 comprises a plurality of induction coils which are crossed to form a detection area corresponding to the charging area;
a driving part 2 connected with a transmitting coil 3, wherein the driving part 2 is used for moving the position of the transmitting coil 3;
the control part 4 is respectively connected with the transmitting coil 3, the detection part 1 and the driving part 2, the control part 4 receives a detection signal fed back by the detection part, calculates the position of the receiving coil according to the detection signal and forms a control signal, and the driving part moves the transmitting coil 3 to the position corresponding to the receiving coil according to the control signal;
the control component is a PCB board, and the transmitting coil 3 is welded on the PCB board 4, so that the PCB board 4 and the transmitting coil 3 form an integral movable wireless charging module.
Specifically, in the present embodiment, as shown in fig. 3, the detection unit includes a plurality of induction coils distributed in a cross manner, a plurality of induction coils are disposed in both the X direction and the Y direction of the detection area, for example, X1, X2, X3, X4, X5, and X6 are disposed in the X direction, Y1, Y2, Y3, Y4, Y5, and Y6 are disposed in the Y direction, the induction coils in the X direction and the induction coils in the Y direction cross each other perpendicularly to form the detection area, and the induction coils may be arranged in an overlapping manner according to the requirement of detection accuracy.
Specifically, the process of detecting the position of the receiving coil includes: the control part sequentially sends detection excitation signals, such as 3.3V/50 KHz/3% + duty (duty ratio), to the induction coil in the X direction, and the detection excitation signals are sent out and then delayed for a period of time to form echo signals in the X direction; the control part sequentially sends detection excitation signals, such as 3.3V/50 KHz/3% + duty, to the induction coil in the Y direction, and delays for a period of time after sending the detection excitation signals to form echo signals in the Y direction; the echo signal in the X direction and the return signal in the Y direction form a detection signal, the control part calculates the current position of a receiving coil of the device to be charged by calculating the detection signal, and then controls the transmitting coil to transmit the current position of the receiving coil, so that the positioning of the transmitting coil and the receiving coil is completed. The control part 4 accurately judges the position of the receiving coil by receiving the magnitude of the detection signal fed back by the induction coil. In comparison, compared with the detection component in fig. 1, the detection component in this embodiment can effectively reduce the area of copper paving, and improve the charging performance of the wireless charger.
Specifically, in this embodiment, as shown in fig. 2, the transmitting coil 3 is directly welded on the PCB 4, so that the PCB 4 and the transmitting coil 3 form an integral movable wireless charging module, and the FPC is not used for connection, thereby reducing the internal resistance of the transmitting coil, reducing the heat generation of the transmitting coil, and at the same time, reducing the packet loss probability when the transmitting coil communicates with the PCB, and improving the stability of the wireless charger.
In a preferred embodiment, as shown in fig. 4, the control unit 4 comprises:
the detection processing module 401, the control component 4 is connected with the detection component 1 through the detection processing module 401, and the detection processing module 401 is used for processing the detection signal fed back by the detection component;
the operation module 402 is connected with the detection processing module 401 and used for calculating the position of the receiving coil according to the processed detection signal;
the driving module 403 is connected with the operation module 402, and the control component 4 is connected with the driving component 2 through the driving module 402, and is used for forming a control signal according to the operation result of the operation module 402 and sending the control signal to the driving component 2;
and the charging control module 404 is respectively connected with the operation module 402 and the transmitting coil 3, and the control component 4 is connected with the transmitting coil 3 through the charging control module 404, and is used for starting the transmitting coil 3 after the operation result output by the operation module 402 indicates that the transmitting coil 3 and the receiving coil are positioned, so as to charge the device to be charged.
Specifically, the control component 4 is a PCB board, and a plurality of functional modules are integrated on the PCB board, and mainly include a detection processing module 401, an operation module 402, a driving module 403, and a charging control module 404. The detection processing module 401 is configured to process the detection signal, in this embodiment, the detection processing module 401 is an operational amplifier, the detection signal is amplified by a low-noise operational amplifier with a higher bandwidth and then output to a detection pin of the control unit, and the operational module calculates the position of the receiving coil according to the magnitude of the feedback detection signal. The control part sends detection excitation signals (such as 3.3V/50 KHz/3% + duty, but not limited to the signals can be modified according to actual conditions) to each induction coil of the detection part in turn through the analog switch, if a receiving coil for placing equipment to be charged is arranged near the induction coil, the excitation signals can generate echo signals to return back, and the echo signals are stronger when the receiving coil is closer to the detection coil.
In a preferred embodiment, as shown in fig. 2, the drive member 2 comprises:
the wireless charging module is movably arranged on the guide rail 201;
two ends of the guide rail 201 are respectively arranged on a pair of parallel sliding rods 202, and the guide rail can move on the pair of sliding rods 202;
the first driving unit is connected with the wireless charging module and used for driving the wireless charging module to move on the guide rail;
the second driving unit is connected with the guide rail and is used for driving the guide rail to move on the pair of slide bars;
the first driving unit comprises a gear and a first motor, sawteeth meshed with the gear are arranged on the edge of the guide rail, and the first motor is used for driving the gear to rotate so as to drive the wireless charging module to move on the guide rail;
the second driving unit comprises a transmission belt and a second motor, the transmission belt is arranged below the guide rail and contacts with the lower surface of the guide rail, and the second motor is used for driving the transmission belt so that the transmission belt drives the guide rail to move on the pair of slide bars.
Specifically, as shown in fig. 2, the first driving unit is configured to drive the wireless charging module (the transmitting coil 3+ the PCB 4) to slide on the guide rail 201, so as to adjust the position of the transmitting coil in the X direction, and the guide rail 201 can also slide on the pair of sliding rods, so as to drive the wireless charging module to move in the Y direction. By means of the combination of the two drive units, the transmitter coil can be moved arbitrarily in the examination area.
The utility model discloses technical scheme's beneficial effect lies in: the plurality of induction coils of the detection part are distributed in a crossed manner, so that copper laying in a detection area is reduced, and the charging efficiency is improved; the transmitting coil is directly welded on the PCB, FPC connection is not used, internal resistance of the transmitting coil is reduced, heating of the transmitting coil is reduced, meanwhile, the packet loss probability of the transmitting coil and the PCB during communication is reduced, and the stability of the wireless charger is improved.
The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.
Claims (7)
1. A coil-movable wireless charger, comprising:
the detection component is used for detecting the position of a receiving coil of a device to be charged and comprises a plurality of induction coils, and the induction coils are crossed to form a detection area corresponding to a charging area;
the driving part is connected with a transmitting coil and is used for moving the position of the transmitting coil;
the control component is a PCB board, the transmitting coil is welded on the PCB board, so that the PCB board and the transmitting coil form an integral movable wireless charging module.
2. The wireless charger according to claim 1, wherein the control means comprises:
the control component is connected with the detection component through the detection processing module, and the detection processing module is used for processing a detection signal fed back by the detection component;
the operation module is connected with the detection processing module and used for calculating the position of the receiving coil according to the processed detection signal;
the driving module is connected with the operation module, the control part is connected with the driving part through the driving module, and the control module is used for forming a control signal according to the operation result of the operation module and sending the control signal to the driving part;
and the control component is connected with the transmitting coil through the charging control module and is used for starting the transmitting coil after the operation result output by the operation module shows that the transmitting coil and the receiving coil are positioned so as to charge the equipment to be charged.
3. The wireless charger according to claim 2, wherein the detection processing module comprises an operational amplifier for amplifying the detection signal.
4. The wireless charger according to claim 1, wherein the driving part comprises:
the wireless charging module is movably arranged on the guide rail;
the two ends of the guide rail are respectively arranged on a pair of parallel sliding rods, and the guide rail can move on the pair of sliding rods.
5. The wireless charger of claim 4, wherein the driving member further comprises:
the first driving unit is connected with the wireless charging module and used for driving the wireless charging module to move on the guide rail;
and the second driving unit is connected with the guide rail and is used for driving the guide rail to move on the pair of slide bars.
6. The wireless charger according to claim 5, wherein the first driving unit comprises a gear and a first motor, the edge of the guide rail is provided with a saw tooth engaged with the gear, and the first motor is used for driving the gear to rotate so as to drive the wireless charging module to move on the guide rail.
7. The wireless charger according to claim 5, wherein the second driving unit comprises a transmission belt and a second motor, the transmission belt is disposed below the guide rail and contacts with a lower surface of the guide rail, and the second motor is configured to drive the transmission belt, so that the transmission belt drives the guide rail to move on the pair of sliding rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921735966.4U CN210608613U (en) | 2019-10-16 | 2019-10-16 | Wireless charger with movable coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921735966.4U CN210608613U (en) | 2019-10-16 | 2019-10-16 | Wireless charger with movable coil |
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| Publication Number | Publication Date |
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| CN210608613U true CN210608613U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921735966.4U Active CN210608613U (en) | 2019-10-16 | 2019-10-16 | Wireless charger with movable coil |
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| CN (1) | CN210608613U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021143339A1 (en) * | 2020-01-17 | 2021-07-22 | 深圳市一讯达科技有限公司 | Wireless charging device and wireless charging control method |
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2019
- 2019-10-16 CN CN201921735966.4U patent/CN210608613U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021143339A1 (en) * | 2020-01-17 | 2021-07-22 | 深圳市一讯达科技有限公司 | Wireless charging device and wireless charging control method |
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