Vehicle-mounted double-coil wireless charger
Technical Field
The utility model relates to the technical field of vehicle-mounted charging, in particular to a vehicle-mounted double-coil wireless charger.
Background
With the popularization of smart phones, the frequency of various applications of the smart phones in vehicles gradually rises, and a wireless charger is one of the most common matched applications. Because the driver may frequently use the mobile phone in the driving process, the mobile phone is fixed and a charging wire is required to be inserted into the mobile phone, so that the operation time of the driver is wasted and the traffic safety risk is increased. Therefore, the existing part of vehicle-mounted chargers have a wireless charging function, wireless charging is realized through a wireless charging coil arranged in the vehicle-mounted charger, and a driver is prevented from plugging and unplugging a charging wire. Thus, the prior art chinese patent with the issued publication number CN205829229U discloses a wireless charger. The wireless charging tray comprises a tray body, a transmitting coil and a fixed magnet, wherein the transmitting coil is packaged in the central area of the tray body, the fixed magnet is positioned at the periphery of the transmitting coil, a viscous silica gel plate is attached to the top surface of the tray body, the rotating support comprises a tray shell, the top surface of the tray shell is provided with a clamping hole, the top surface of the tray body is provided with a ball seat, the ball seat is provided with a spherical groove, the connecting rod end of the ball head connecting rod is fixed to the bottom surface of the tray body, and the ball head end is aligned and embedded in the spherical groove through the clamping hole. The terminal equipment to be charged can be accurately positioned and firmly fixed on the charger by utilizing the dual functions of the viscosity principle and the magnetic attraction principle, and the phenomenon that the mobile phone is misplaced or separated from the charger due to the influence of factors such as movement and jolt of a vehicle can be avoided in the running process of an automobile by taking the application of the charger in the field of vehicle mobile phone charging as an example.
However, in practical application, the wireless charger has the defects that the wireless charger adopts a single coil, the compatibility is not good, particularly, the current rapid charging protocols are various, the applicability of the single coil is obviously reduced under the condition of different charging specifications of mobile phones, in addition, in the process of vehicle running jolting, the mobile phones are difficult to adsorb due to the small suction force of a single set of magnetic attraction sheets, and the mobile phones are easy to loosen and fall in the process of vehicle jolting, so that the wireless charger is inconvenient to use.
Disclosure of utility model
Aiming at the defects, the utility model provides the vehicle-mounted double-coil wireless charger, which improves the compatibility and the applicability of the wireless charger through double coils, can also avoid the mobile phone from loosening and falling in the bumping process of the vehicle, and is more convenient to use.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The utility model provides a wireless charger of on-vehicle double coil, includes the shell, inlays to be located the positive electricity board of getting of shell, install two strong magnets of shell front, and install electric accumulator, control circuit board and two charging coil in the shell, charging coil just is to getting the electricity board setting, the equal electric connection of charging coil and electric accumulator control circuit board.
Further, the two charging coils support QC3.0/QC2.0/PD3.0+PPS multiple fast charging input protocols, support 15W/10W/7.5W/5W multiple output powers, and the output powers of the two charging coils are different.
Further, a power interface is arranged on the back of the shell and is electrically connected with the electric energy accumulator.
Further, the front surface of the electricity taking plate is provided with a cylindrical bulge, and the strong magnet is embedded at the upper end of the cylindrical bulge.
Further, the front surface of the electricity taking plate is provided with an anti-slip pad.
Further, a plurality of shell supports are arranged on the back of the shell.
Further, the back of the shell is provided with a heat dissipation port.
Further, the shell comprises a bottom shell and an upper shell, the upper end of the bottom shell is buckled with the bottom end of the upper shell, and the electricity taking plate is fixed at the upper end of the upper shell.
The beneficial effects of the utility model are as follows:
In practical application, the mobile phone is placed on the power taking plate, the mobile phone is charged wirelessly through the control circuit board, the two charging coils and the electric energy accumulator, the mobile phone is adsorbed through the two strong magnets, the mobile phone is prevented from loosening and falling in the bumping process of the vehicle, the compatibility and the applicability of the wireless charger are improved through the double coils, the mobile phone is prevented from loosening and falling in the bumping process of the vehicle, and the use is more convenient.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a bottom view of the present utility model;
FIG. 3 is a top view of the present utility model;
FIG. 4 is a cross-sectional view at A-A in FIG. 3;
The electric power supply device comprises a shell 1, a heat dissipation port 10, a bottom shell 11, an upper shell 12, an electric power taking plate 2, a strong magnet 3, a control circuit board 4, a charging coil 5, a power supply interface 6, an anti-slip pad 7 and a shell bracket 8.
Detailed Description
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a vehicle-mounted double-coil wireless charger comprises a housing 1, a power taking plate 2 embedded in the front face of the housing 1, two strong magnets 3 installed in the front face of the housing 1, an electric energy accumulator, a control circuit board 4 and two charging coils 5 installed in the housing 1, wherein the charging coils 5 are opposite to the power taking plate 2, and the charging coils 5 and the electric energy accumulator are electrically connected with the control circuit board 4.
When the wireless charger is used, the mobile phone is placed on the power taking plate 2, the mobile phone is wirelessly charged through the control circuit board 4, the two charging coils 5 and the electric energy accumulator, the mobile phone is adsorbed through the two strong magnets 3, the mobile phone is prevented from loosening and falling in the bumping process of the vehicle, the compatibility and the applicability of the wireless charger are improved through the double coils, the mobile phone is prevented from loosening and falling in the bumping process of the vehicle, and the wireless charger is more convenient to use.
In this embodiment, the control circuit board 4 includes an MCU chip and a plurality of MOS tubes, an oscillation loop is formed between the MCU chip and each MOS tube, the MCU chip is connected with the transmitting end of the charging coil 5 for sensing the voltage change generated by the charging coil 5, when the mobile phone is placed on the power taking board 2, if the mobile phone transmitting end coil senses a load, the MCU chip will send a control signal if the mobile phone is detected, the MOS tubes on the control circuit board 4 are driven to form an oscillation loop, so that the charging coil 5 generates an analog alternating current, and an electromagnetic field is generated to charge the secondary coil in a transmission way.
As shown in fig. 1, 2, 3 and 4, a power interface 6 is disposed on the back of the housing 1, and the power interface 6 is electrically connected to the electric energy accumulator, where in this embodiment, the electric energy accumulator can be charged through the power interface 6.
As shown in fig. 1, 2, 3 and 4, the front surface of the power taking plate 2 is provided with a cylindrical protrusion 21, and the strong magnet 3 is embedded at the upper end of the cylindrical protrusion 21, and in this embodiment, the strong magnet 3 is installed through the cylindrical protrusion 21.
As shown in fig. 1, 2, 3 and 4, the front surface of the power taking plate 2 is provided with an anti-slip pad 7, and in this embodiment, the anti-slip pad 7 can further prevent the mobile phone from slipping after adsorption.
As shown in fig. 1, 2, 3 and 4, a plurality of housing brackets 8 are provided on the back of the housing 1, and in this embodiment, the housing 1 can be mounted and fixed by the housing brackets 8.
As shown in fig. 1, 2, 3 and 4, the back of the housing 1 is provided with a heat dissipation port 10, and in this embodiment, heat can be dissipated to the control circuit board 4 through the heat dissipation port 10.
As shown in fig. 1, 2, 3 and 4, the housing 1 includes a bottom shell 11 and an upper shell 12, the upper end of the bottom shell 11 is buckled with the bottom end of the upper shell 12, and the power taking plate 2 is fixed at the upper end of the upper shell 12, in this embodiment, since the housing 1 is made by buckling the bottom shell 11 and the upper shell 12 by injection molding, the injection molding difficulty of the housing 1 can be effectively reduced, and the production cost is lower.
The specific embodiments described herein are offered by way of example only. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the scope of the utility model as defined.