CN210129747U - Wireless charging device - Google Patents
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- CN210129747U CN210129747U CN201920845777.6U CN201920845777U CN210129747U CN 210129747 U CN210129747 U CN 210129747U CN 201920845777 U CN201920845777 U CN 201920845777U CN 210129747 U CN210129747 U CN 210129747U
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Abstract
A wireless charging device comprises a shell with an inner space, a rotating base body which is arranged in the inner space and can rotate around a central shaft, a transmitting coil which is fixed on the rotating base body, a driving motor which drives the rotating base body to rotate and a microcontroller, wherein the driving motor drives the rotating base body to rotate so that the transmitting coil on the rotating base body changes the position of the transmitting coil in the circumferential direction to be coupled with equipment to be charged; the application also provides a wireless charging method.
Description
Technical Field
The application relates to the field of wireless charging, in particular to a wireless charging device.
Background
The wireless charging technology of the WPC or Qi protocol is based on a near-field magnetic induction mode, and energy is induced to a secondary coil from a primary coil, so that the purpose of wireless power transmission is achieved. To improve the system efficiency of wireless charging, it is generally required that the coils of the transmitting and receiving ends must be aligned and abutted as closely as possible. Although wireless charging based on the Airfuel protocol does not require perfect alignment, it will result in a significant drop in charging efficiency. Therefore, it is desirable to align the coils as closely as possible to improve system efficiency, whether WPC or Airfuel. The wireless charging device is generally limited in space or coil size, and when the wireless charging device is actually used, the degree of freedom of the space is low, so that the wireless charging experience of a user is influenced.
At present, there are two main technical ways to improve the spatial degree of freedom. Firstly, the transmitting end adopts a multi-coil combination mode. This approach is limited by the number of coils, which would result in increased cost and decreased efficiency. At the same time, it becomes complicated in switching coils or control. On the contrary, too few coil space degrees of freedom are limited in expansion and have little meaning. And in the other mode, the transmitting end adopts a single coil moving mode. In the method, a transverse-axis (X-axis) guide rail, a longitudinal-axis (Y-axis) guide rail and a stepping motor are arranged in a base of the charging equipment. The coil is controlled by the microcontroller to move close to or align with the device to be charged. Because two sets of independent guide rails and motor equipment are required to be arranged in the device, the cost of the whole device and the control complexity are improved.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application provides a wireless charging device, so as to reduce the number of coils, simplify the hardware structure, reduce the control complexity and cost, and greatly improve the spatial freedom of the wireless charging device.
In order to solve the technical problem, the present application provides a wireless charging device, including the shell that is equipped with the inner space, install in just can wind a center pin pivoted rotatory pedestal, be fixed in the inner space transmitting coil, drive on the rotatory pedestal pivoted driving motor and microcontroller, the driving motor drive rotatory pedestal rotates and makes transmitting coil on the rotatory pedestal changes its position in the circumferencial direction and treats charging apparatus with the coupling.
Preferably, the driving motor is a central shaft, and a driving rod of the driving motor drives the rotating base to rotate; or the driving motor is arranged at the outer edge of the rotating seat body and is meshed with the rotating seat body through a gear.
Preferably, the transmitting coils include a first transmitting coil and a second transmitting coil, the first transmitting coil and the second transmitting coil partially coincide in the projection direction, and the center of one transmitting coil is the central axis; the radius of the first transmitting coil is r1The radius of the second transmitting coil is r2The radius of the charging coverage area of the wireless charging device is less than 2r1+2r2。
Preferably, the transmitting coil includes a first, a second and a third transmitting coil, the first, the second and the third transmitting coils are partially overlapped in the projection direction, and the center of one transmitting coil is the central axis; the radius of the first transmitting coil is r1The radius of the second transmitting coil is r2The radius of the third transmitting coil is r3The radius of the charging coverage area of the wireless charging device is less than 2r1+2r2+2r3The centers of the first, second and second transmitting coils are in the same straight line.
Preferably, the wireless charging device further includes a radial connecting rod, the radial connecting rod is fixed to the rotating base, and the transmitting coil is fixed to the radial connecting rod and can move in the radial direction along the radial connecting rod.
This application is through setting up rotatory pedestal, through the rotation of rotatory pedestal drives transmitting coil rotates with the change position, compares in transmitting coil's rotation, realizes position balance more easily, improves the accuracy nature of position shift.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.
Fig. 1 is a schematic view of a wireless charging device according to an embodiment 1 of the present application;
fig. 2 is a schematic diagram of a wireless charging device according to an embodiment 2 of the present application;
fig. 3 is a schematic view of a wireless charging device according to an embodiment 3 of the present application;
fig. 4 is a schematic view of a wireless charging device according to an embodiment 4 of the present application;
fig. 5 is a schematic view of a wireless charging device according to an embodiment 5 of the present application;
fig. 6 is a schematic diagram of a wireless charging device according to an embodiment 6 of the present application;
fig. 7 is a schematic diagram of the position movement of the wireless charging device according to the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings.
Example 1
Referring to fig. 1, a wireless charging device according to embodiment 1 of the present application includes a housing 1, a transmitting coil 2 installed in the housing 1, a driving motor 3, an annular track 4, a radial track 5, a radial link 6, a connector 7, and a microcontroller 8. The shell 1 is of a cylindrical structure, an inner space is formed in the shell 1 in a hollow mode, the inner space is a cylindrical space, and the inner space is provided with a circle center A; the inner space 9 comprises a circle center A as a circle center and a radius r as a circle centerdAnd a charging coverage area 9 with a circle center A as a circle center, the radius of the transmitting coil 2 is r1The radius of the annular track 4 is rd+r1The radius of the charging coverage area 9 is larger than rd+2r1. The driving motor 3 is installed at the position of a circle center A of the reserved empty area, the radial connecting rod 6 is connected with the driving motor 3 and the circle center of the transmitting coil 2, and the driving motor 3 drives the transmitting coil 2 to rotate along the annular track 4 through the radial connecting rod 6 when rotating. The radial track 5 is fixed on the upper side or the lower side of the transmitting coil 2 in the radial direction, and the transmitting coil 2 can move along the radial track 5 in the radial directionAnd the radial tracks 5 extend on two sides in the radial direction by taking the circle center of the transmitting coil 2 as a starting point.
The connector 7 is used for electrically connecting the transmitting coil 2 with a power supply.
The driving motor 3 can also drive the transmitting coil 2 to move along the radial track 5, and at the moment, the transmitting coil 2 can be separated from the annular track 4. When the transmitting coil 2 is driven to move on the annular track 4 and the radial track 5 by a driving motor 3, a clutch device is needed, so that the driving motor controls the movement of the transmitting coil 2 on the annular track 4 and the radial track 5 in a time-sharing manner. Alternatively, a second driving motor is provided on the transmitting coil 2 or the radial track 5 to drive the movement of the transmitting coil 2 in the radial direction.
Referring to fig. 7, the charging method of the wireless charging device of the embodiment 1 includes the following steps:
s10, detecting whether the equipment to be charged exists in real time, and if the equipment to be charged is detected, sending a charging indication signal to the microcontroller;
in this step, the device to be charged is detected by auxiliary means or methods such as auxiliary positioning coils, Q value detection of transmitting coils, gravity sensing, infrared sensing or other sensors. When the device to be charged cannot be detected, the driving motor is in a rest state, so that the standby power consumption is reduced, and the service life of the motor is prolonged.
S20, when the microcontroller 8 receives the charging indication signal, the microcontroller 8 controls the transmitting coil to establish connection with the device to be charged;
the connection established between the transmitting coil 2 and the device to be charged in this step may be a WPC or Qi protocol.
S30, acquiring the charging efficiency value of the current transmitting coil 2, and comparing the acquired charging efficiency value with a preset value: when the charging efficiency value is higher than a preset value, the transmitting coil 2 continuously charges the equipment to be charged at the current position; when the charging efficiency value is lower than the preset value, the position of the transmitting coil 2 on the circular track 4 is moved until the current charging efficiency value is higher than the preset value. The charging efficiency value is obtained by dividing the received power of the device to be charged by the transmit power of the transmit coil.
When the charging efficiency value is lower than the preset value: the microcontroller 8 controls the driving motor 3 to drive the transmitting coil 2 to move clockwise or counterclockwise along the circular track 4 to the next preset position L1, L2 and obtains the charging efficiency value of the current position:
if the current charging efficiency value is larger than the charging efficiency value obtained at the previous time, continuously moving one position along the same direction until the obtained charging efficiency value is larger than a preset value;
if the current charging efficiency value is smaller than the charging efficiency value acquired last time, the current charging efficiency value is reversely moved to the next position until the acquired charging efficiency value is larger than the preset value.
In this step, the position of the transmitting coil on the circular track is set according to the size of the wireless charging device and the transmitting coil, for example, the transmitting coil is divided into 4, 8, 12, 16 equal parts on average. The comparison algorithm of the charging efficiency values can adopt a classical binary search method to reduce the iteration time, or simple polling comparison and the like. If the charging efficiency value is higher than the preset value at any position of the process, finishing the search; otherwise, a location of optimal efficiency rate is preferred.
S40, acquiring the optimal position of the transmitting coil on the radial track to obtain the optimal charging efficiency value;
s401, the microcontroller 8 controls the driving motor to drive the transmitting coil 2 to move to the next position J1, J2 along the inner or outer direction on the radial track 5 and obtains the charging efficiency value of the current position: if the current charging efficiency value is larger than the charging efficiency value before the current moving position, continuously moving a position along the same direction until the position with the optimal charging efficiency value is found; and if the current charging efficiency value is smaller than the charging efficiency value before the current movement, reversely moving to the next position until the position with the optimal charging efficiency value is found.
S50, when the charging is finished or the device to be charged is removed, the transmitting coil 2 automatically moves to the default position or directly stays at the current position or selects a position commonly used by the user.
By providing the circular track and the radial track, the present embodiment can cover all surface areas of the wireless charging device with only one small transmitting coil. And only one driving motor is needed to be used for driving the annular or radial movement in a time-sharing mode or two driving motors are used for driving the annular or radial movement respectively, so that the cost is saved, and meanwhile, the requirement of free positioning in the true sense is met.
Example 2
Referring to fig. 2, the wireless charging device according to embodiment 2 of the present application includes a housing 1, a transmitting coil 2 installed in the housing 1, an annular track 4, a radial link 6, a connector 7, and a microcontroller 8. The shell 1 is of a cylindrical structure, an inner space is formed in the shell 1 in a hollow mode, the inner space is a cylindrical space, and the inner space is provided with a circle center A; the inner space comprises a circle center A and a radius rdAnd a charging coverage area 9 with a circle center A as a circle center, the radius of the transmitting coil 2 is r1The radius of the annular track 4 is rd+r1The radius of the charging coverage area 9 is 2r1+rdThat is, the transmitting coil 2 winds the annular track 4 for one circle, the transmitting coil 2 can completely cover the charging coverage area 9, and the coverage area of the transmitting coil 2 is pi (2 r)1+rd)2-πrd2＝4πr1 2+2πr1rd. The driving motor 3 is installed at the position of a circle center A of the reserved empty area, the radial connecting rod 6 is connected with the driving motor 3 and the circle center of the transmitting coil 2, and the driving motor 3 drives the transmitting coil 2 to rotate along the annular track 4 through the radial connecting rod 6 when rotating.
Referring to fig. 7, the charging method of the wireless charging device according to embodiment 2 includes the following steps:
s10, detecting whether the equipment to be charged exists in real time, and if the equipment to be charged is detected, sending a charging indication signal to the microcontroller;
in this step, the device to be charged is detected by auxiliary means or methods such as auxiliary positioning coils, Q value detection of transmitting coils, gravity sensing, infrared sensing or other sensors. When the device to be charged cannot be detected, the driving motor is in a rest state, so that the standby power consumption is reduced, and the service life of the motor is prolonged.
S20, when the microcontroller 8 receives the charging indication signal, the microcontroller 8 controls the transmitting coil 2 to be connected with the equipment to be charged;
the connection established between the transmitting coil 2 and the device to be charged in this step may be a WPC or Qi protocol.
S30, acquiring the charging efficiency value of the current transmitting coil 2, and comparing the acquired charging efficiency value with a preset value: when the charging efficiency value is higher than a preset value, the transmitting coil 2 continuously charges the equipment to be charged at the current position; when the charging efficiency value is lower than the preset value, the position of the transmitting coil 2 on the circular track 4 is moved until the current charging efficiency value is higher than the preset value.
When the charging efficiency value is lower than the preset value: the microcontroller 8 controls the driving motor 3 to drive the transmitting coil 2 to move clockwise or counterclockwise along the circular track 4 to the next preset position L1, L2 and obtains the charging efficiency value of the current position:
if the current charging efficiency value is larger than the charging efficiency value obtained at the previous time, continuously moving one position along the same direction until the obtained charging efficiency value is larger than a preset value;
if the current charging efficiency value is smaller than the charging efficiency value acquired last time, the current charging efficiency value is reversely moved to the next position until the acquired charging efficiency value is larger than the preset value.
In this step, the position of the transmitting coil on the circular track is set according to the size of the wireless charging device and the transmitting coil, for example, the transmitting coil is divided into 4, 8, 12, 16 equal parts on average. The comparison algorithm of the charging efficiency values can adopt a classical binary search method to reduce the iteration time, or simple polling comparison and the like. If the charging efficiency value is higher than the preset value at any position of the process, finishing the search; otherwise, a location of optimal efficiency rate is preferred.
S40, when the charging is finished or the device to be charged is removed, the transmitting coil 2 automatically moves to the default position or directly stays at the current position or selects a position commonly used by the user.
In the present embodiment, only the circular track is provided, and a transmitting coil with a diameter equal to the radius of the charging coverage area is provided, and the transmitting coil can completely cover the charging coverage area 9 by surrounding the circular track for one circle. And only one driving motor is needed to drive the transmitting coil to move around the annular track, so that the structure is simple and the cost is low.
Example 3
Referring to fig. 3, a wireless charging device according to embodiment 3 of the present application includes a housing 1, a first transmitting coil 2, a second transmitting coil 10, a driving motor 3, an annular track 4, a radial link 6, a connector 7, and a microcontroller 8, which are installed in the housing 1. The shell 1 is of a cylindrical structure, an inner space is formed in the shell 1 in a hollow mode, the inner space is a cylindrical space, and the inner space is provided with a circle center A; the inner space includes a charging footprint 9 centered at a center a. The radius of the first emitting coil 2 is r1The radius of the second transmitting coil 10 is r2The first transmitting coil 2 is fixed on the annular track 4 in a sliding manner, and the second transmitting coil 10 is installed at the position of the circle center a. The radius of the annular track 4 is the distance d between the centers of the first transmitting coil 2 and the second transmitting coil 1012The first transmitting coil 2 and the second transmitting coil 10 are partially overlapped and are designed in an upper layer and a lower layer; or, the first transmitting coil 2 is fitted to the outer edge of the second transmitting coil 10, that is, the radius of the circular track 4 is equal to the sum of the radii of the first transmitting coil 2 and the second transmitting coil 10. Preferably, the radius of the first transmitting coil 2 is larger than the radius of the second transmitting coil 10. The second transmitting coil 10 may be rotatable or immovable.
The radius of the charging coverage area 9 is d12+r1. The driving motor 3 is arranged at the position of the circle center A of the inner space, the radial connecting rod 6 is connected with the driving motor 3 and the circle center of the first radiation coil 2, and the driving motor 3 rotates through the radial connectionThe rod 6 drives the first transmitting coil 2 to rotate along the circular track 4.
The connector 7 is used for electrically connecting the transmitting coil 2 with a power supply.
Example 4
Referring to fig. 4, a wireless charging device according to embodiment 4 of the present application is different from embodiment 3 in that, in addition to the first and second transmitting coils 2 and 10, a plurality of third transmitting coils 11 are further disposed radially outside or inside the first transmitting coil 2. The transmitting coils 2, 10, 11 of the present embodiment may completely cover the charging coverage area 9, and the coverage area is pi (d)12+d13+r3)2Wherein d is12<r1+r2,d13<r1+r3,d12Is the distance between the centers of the first and second transmitting coils 2, 10, d13Is the distance between the centers of the first and third transmitting coils 2, 11, r3Is the radius of the third transmitting coil 11. The centers of the first, second and third transmitting coils 2, 10 and 11 are on the same straight line.
Referring to fig. 7, the charging method of the wireless charging device according to embodiments 3 and 4 includes the following steps:
s10, detecting whether the equipment to be charged exists in real time, and if the equipment to be charged is detected, sending a charging indication signal to the microcontroller;
in this step, the device to be charged is detected by auxiliary means or methods such as auxiliary positioning coils, Q value detection of transmitting coils, gravity sensing, infrared sensing or other sensors. When the device to be charged cannot be detected, the driving motor is in a rest state, so that the standby power consumption is reduced, and the service life of the motor is prolonged.
S20, obtaining Q values of a plurality of current transmitting coils, and selecting a charging coil with the lowest Q value or selecting 2 or 3 transmitting coils with lower Q values;
in this step, the Q value is a quality factor of the transmitting coil (inductor), and the Q value varies depending on whether there is a load on the transmitting coil.
S30, connecting the selected transmitting coil with the equipment to be charged, or connecting the selected transmitting coils with the equipment to be charged in a time-sharing manner;
the connection established between the transmitting coil 2 and the device to be charged in this step may be a WPC or Qi protocol.
S40, acquiring the charging efficiency value of the current transmitting coil 2, and comparing the acquired charging efficiency value with a preset value: when the charging efficiency value is higher than a preset value, the transmitting coil 2 continuously charges the equipment to be charged at the current position; when the charging efficiency value is lower than the preset value, the position of the transmitting coil 2 on the circular track 4 is moved until the current charging efficiency value is higher than the preset value.
When the charging efficiency value is lower than the preset value: the microcontroller 8 controls the driving motor 3 to drive the transmitting coil 2 to move clockwise or counterclockwise along the circular track 4 to the next preset position L1, L2 and obtains the charging efficiency value of the current position:
if the current charging efficiency value is larger than the charging efficiency value obtained at the previous time, continuously moving one position along the same direction until the obtained charging efficiency value is larger than a preset value;
if the current charging efficiency value is smaller than the charging efficiency value acquired last time, the current charging efficiency value is reversely moved to the next position until the acquired charging efficiency value is larger than the preset value.
In this step, the position of the transmitting coil on the circular track is set according to the size of the wireless charging device and the transmitting coil, for example, the transmitting coil is divided into 4, 8, 12, 16 equal parts on average. The comparison algorithm of the charging efficiency values can adopt a classical binary search method to reduce the iteration time, or simple polling comparison and the like. If the charging efficiency value is higher than the preset value at any position of the process, finishing the search; otherwise, a location of optimal efficiency rate is preferred.
And S50, when the charging is finished or the device to be charged is removed, the transmitting coil automatically moves to a preset default position or directly stays at the current position or selects a position commonly used by the user.
Example 5
Referring to fig. 5, in embodiment 5, on the basis of embodiments 3 and 4, the circular track 4 is omitted, and the driving motor 3 is directly used to drive the transmitting coil to rotate clockwise or counterclockwise. The transmitter coils in this embodiment may be two or three, one of which is fixed at the center of the circle together with the driving motor 3. By analogy, more coils can be added, and the coils can be arranged in a mode of axial single side or axial central symmetry.
The charging method of the wireless charging device in embodiment 5 is similar to the charging methods in embodiments 3 and 4, except that the loop movement of the transmitting coil directly drives the transmitting coil to rotate through the rotation of the motor without the cooperation of the loop track.
Further, embodiments 3 to 5 are a multi-transmission coil mode, which may allow placement of a plurality of devices to be charged. Thus, the charging apparatus may also support sequential charging of multiple devices in sequence, supported by the microcontroller control algorithm, until all detected devices have completed charging. For example, after charging is completed according to the charging steps and methods described above, the charging device repeats the first step pre-detection function. Since the completed device may not be removed in time, or other devices may still be in the charging area, the pre-detection output determination still has devices put in. And after the last charging device finishes the position, the charging device continues to sequentially scan other positions to detect whether the device which is not charged is available. When all scanning is finished, if no more equipment to be charged is found or no equipment is placed in the scanning device according to the pre-detection result, the charging device is charged, and the scanning device enters the state of periodic work or servo again.
Example 6
Referring to fig. 6, a wireless charging device according to embodiment 6 of the present application includes a housing 1, a rotating base 20 disposed in the housing 1, a transmitting coil 2 fixed in the rotating base 20, a driving motor 3, and a microcontroller 8. The rotary base 20 rotates around the central shaft 21 in the housing 1. The driving motor 3 drives the central shaft 21 to rotate.
Compared to embodiment 1, embodiment 6 is that the circular track 4 is replaced by a rotating base 20, and the transmitting coil 2 is fixed on the rotating base 20; the position of the transmitting coil 2 is changed by the rotation of the rotary base 20. Meanwhile, embodiment 6 may also provide a radial track, moving the position of the transmitting coil 2 in the radial direction to adapt to the device to be charged. The driving motor 3 can be arranged on the central shaft 21 to drive the rotating base body to rotate; or the gear can be arranged on the outer edge of the rotating base 20 to drive the rotating base 20 to rotate by a gear arrangement.
The multi-coil designs of embodiments 3 and 4 can also be applied to embodiment 6.
Referring to fig. 7, the charging method of the wireless charging device of the embodiment 6 includes the following steps:
s10, detecting whether the equipment to be charged exists in real time, and if the equipment to be charged is detected, sending a charging indication signal to the microcontroller;
in this step, the device to be charged is detected by auxiliary means or methods such as auxiliary positioning coils, Q value detection of transmitting coils, gravity sensing, infrared sensing or other sensors. When the device to be charged cannot be detected, the driving motor is in a rest state, so that the standby power consumption is reduced, and the service life of the motor is prolonged.
S20, when the microcontroller 8 receives the charging indication signal, the microcontroller 8 controls the transmitting coil to establish connection with the device to be charged;
the connection established between the transmitting coil 2 and the device to be charged in this step may be a WPC or Qi protocol.
S30, acquiring the charging efficiency value of the current transmitting coil 2, and comparing the acquired charging efficiency value with a preset value: when the charging efficiency value is higher than a preset value, the transmitting coil 2 continuously charges the equipment to be charged at the current position; when the charging efficiency value is lower than the preset value, the rotary base 20 rotates to change the position of the transmitting coil 2 in the circumferential direction until the current charging efficiency value is higher than the preset value. The charging efficiency value is obtained by dividing the received power of the device to be charged by the transmit power of the transmit coil.
When the charging efficiency value is lower than the preset value: the microcontroller 8 controls the driving motor 3 to drive the rotary base 20 to move to the next preset position L1, L2 clockwise or counterclockwise and obtains the charging efficiency value of the current position:
if the current charging efficiency value is larger than the charging efficiency value obtained at the previous time, continuously moving one position along the same direction until the obtained charging efficiency value is larger than a preset value;
if the current charging efficiency value is smaller than the charging efficiency value acquired last time, the current charging efficiency value is reversely moved to the next position until the acquired charging efficiency value is larger than the preset value.
In this step, the position of the transmitting coil on the circular track is set according to the size of the wireless charging device and the transmitting coil, for example, the transmitting coil is divided into 4, 8, 12, 16 equal parts on average. The comparison algorithm of the charging efficiency values can adopt a classical binary search method to reduce the iteration time, or simple polling comparison and the like. If the charging efficiency value is higher than the preset value at any position of the process, finishing the search; otherwise, a location of optimal efficiency rate is preferred.
S40, when the charging is finished or the device to be charged is removed, the transmitting coil 2 automatically moves to the default position or directly stays at the current position or selects a position commonly used by the user.
In this embodiment, by arranging the rotating base 20, the transmitting coil 2 is driven to rotate by the rotation of the rotating base 20 so as to change the position, so that the position balance is more easily realized and the accuracy of the position movement is improved compared with the rotation of the transmitting coil.
The application discloses wireless charging device, on the basis that increases hardware cost or control complexity as far as possible, very big improvement wireless charging device's space degree of freedom. The wireless charging method is used in the wireless charging device of the embodiment of the invention, and the implementation of the technical scheme is simple and efficient. Thereby promoted user's wireless experience of charging, really accomplish to place all can charge at will, can support single or a plurality of battery charging outfits to charge in proper order simultaneously. Thereby promoting the wider application of wireless charging.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (5)
1. A wireless charging device is characterized by comprising a shell with an inner space, a rotating base body, a transmitting coil, a driving motor and a microcontroller, wherein the rotating base body is arranged in the inner space and can rotate around a central shaft, the transmitting coil is fixed on the rotating base body, the driving motor drives the rotating base body to rotate, and the transmitting coil on the rotating base body is driven to change the position of the transmitting coil in the circumferential direction so as to be coupled with equipment to be charged.
2. The wireless charging device according to claim 1, wherein the driving motor is a central shaft, and a driving rod of the driving motor drives the rotating base to rotate; or the driving motor is arranged at the outer edge of the rotating seat body and is meshed with the rotating seat body through a gear.
3. The wireless charging device of claim 1, wherein the transmitting coils comprise a first transmitting coil and a second transmitting coil, the first transmitting coil and the second transmitting coil partially coincide in a projection direction, and a center of one transmitting coil is the central axis; the radius of the first transmitting coil is r1The radius of the second transmitting coil is r2The radius of the charging coverage area of the wireless charging device is less than 2r1+2r2。
4. The wireless charging device of claim 1, wherein the transmitting coil comprises a first, a second and a third transmitting coils, the first, the second and the third transmitting coils are partially overlapped in the projection direction, and one of the transmitting linesThe circle center of the ring is the central shaft; the radius of the first transmitting coil is r1The radius of the second transmitting coil is r2The radius of the third transmitting coil is r3The radius of the charging coverage area of the wireless charging device is less than 2r1+2r2+2r3The centers of the first, second and second transmitting coils are in the same straight line.
5. The wireless charging device of claim 1, further comprising a radial link fixed to the rotation mount, wherein the transmitting coil is fixed to the radial link and is movable in a radial direction along the radial link.
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| CN201920845777.6U CN210129747U (en) | 2019-06-05 | 2019-06-05 | Wireless charging device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110336342A (en) * | 2019-06-05 | 2019-10-15 | 南京睿赫电子有限公司 | Wireless charging device and charging method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110336342A (en) * | 2019-06-05 | 2019-10-15 | 南京睿赫电子有限公司 | Wireless charging device and charging method |
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Address after: Room 101-8, block B, animation building, No. 11, Xinghuo Road, Jiangbei new district, Nanjing, Jiangsu Province Patentee after: NANJING RUIHE ELECTRONICS Co.,Ltd. Address before: 210043 Buyue Road, 29 Qiaolin Street, Pukou District, Nanjing City, Jiangsu Province, 12-293 Patentee before: NANJING RUIHE ELECTRONICS Co.,Ltd. |