Vehicle-mounted double-coil wireless charger

Abstract

The utility model relates to the technical field of vehicle-mounted charging, in particular to a vehicle-mounted double-coil wireless charger, which comprises a shell, a power taking plate embedded in the front surface of the shell, two strong magnets mounted on the front surface of the shell, and an electric energy storage device, a control circuit board and two charging coils which are mounted in the shell, the charging coil is arranged right opposite to the electricity taking plate, and the charging coil and the electric energy storage device are electrically connected with the control circuit board; during use, a mobile phone is placed on the electricity taking plate, and the mobile phone is wirelessly charged through the control circuit board, the two charging coils and the electric energy storage device; the mobile phone is adsorbed through the two strong magnets, so that the mobile phone is prevented from loosening and falling off in the bumping process of a vehicle; according to the utility model, the compatibility and applicability of the wireless charger are improved through the double coils, the mobile phone can be prevented from loosening and falling off in the bumping process of a vehicle, and the wireless charger is more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of vehicle charging technology, specifically to a vehicle-mounted dual-coil wireless charger. Background Technology

[0002] With the widespread use of smartphones, the frequency of their use in vehicles is gradually increasing, and wireless chargers are one of the most common accompanying applications. Since drivers may frequently use their phones while driving, having to plug in a charging cable while holding the phone in place wastes driver time and increases traffic safety risks. Therefore, some existing car chargers have wireless charging capabilities, using a wireless charging coil within the charger to achieve wireless charging, eliminating the need for drivers to plug and unplug the charging cable. Chinese patent CN205829229U discloses a wireless charger. It includes: a wireless charging pad, a ball-head connecting rod, a rotating support base, and a magnetic suction plate mounted on the device to be charged. The wireless charging pad includes a pad body, a transmitting coil encapsulated in the central area of ​​the pad body, and a fixed magnet located around the transmitting coil. An adhesive silicone plate is attached to the top surface of the pad body. The rotating support base includes a housing with a mounting hole on its top surface and a ball seat with a spherical groove on its top surface. The connecting rod end of the ball-head connecting rod is fixed to the bottom surface of the pad body, and the ball end is aligned and fitted into the spherical groove through the mounting hole. By utilizing the combined effects of adhesive and magnetic principles, the device to be charged can be precisely positioned and firmly fixed to the charger. Taking the application of the charger in the field of in-vehicle mobile phone charging as an example, during the operation of the car, it can ensure that the mobile phone will not be misaligned or detached from the charger due to the movement and bumps of the vehicle.

[0003] However, in practical applications, the above wireless charger still has the following shortcomings: The wireless charger uses a single coil, which has poor compatibility. In particular, with the current variety of fast charging protocols and different charging specifications for mobile phones, the applicability of a single coil is significantly reduced. In addition, during vehicle travel, due to the weak attraction of a single set of magnetic plates, it is difficult to hold the phone in place, and the phone is easy to fall off during vehicle travel, making it inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings by providing a vehicle-mounted dual-coil wireless charger. The dual coils improve the compatibility and applicability of the wireless charger and prevent the phone from falling off during vehicle bumps, making it more convenient to use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A vehicle-mounted dual-coil wireless charger includes a housing, a power-gathering plate embedded in the front of the housing, two strong magnets mounted on the front of the housing, and an energy storage device, a control circuit board, and two charging coils installed inside the housing. The charging coils are positioned opposite the power-gathering plate, and both the charging coils and the energy storage device are electrically connected to the control circuit board.

[0007] Furthermore, the two charging coils support multiple fast charging input protocols including QC3.0 / QC2.0 / PD3.0+PPS, and multiple output powers including 15W / 10W / 7.5W / 5W, with the two charging coils having different output powers.

[0008] Furthermore, a power interface is provided on the back of the housing, and the power interface is electrically connected to the energy storage device.

[0009] Furthermore, a cylindrical protrusion is provided on the front of the power-collecting board, and the strong magnet is embedded in the upper end of the cylindrical protrusion.

[0010] Furthermore, the front of the power-collecting board is provided with an anti-slip pad.

[0011] Furthermore, multiple housing supports are provided on the back of the housing.

[0012] Furthermore, a heat dissipation vent is provided on the back of the outer casing.

[0013] Furthermore, the outer casing includes a bottom shell and an upper shell, with the upper end of the bottom shell fastened to the bottom end of the upper shell, and the power-collecting board fixed to the upper end of the upper shell.

[0014] The beneficial effects of this utility model are:

[0015] In practical applications, the phone is placed on the charging board, and wireless charging is provided through the control circuit board, two charging coils, and an energy storage device. Two strong magnets are used to attract the phone, preventing it from falling off during vehicle bumps. This invention improves the compatibility and applicability of the wireless charger by using dual coils, and also prevents the phone from falling off during vehicle bumps, making it more convenient to use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a bottom view of the present invention;

[0018] Figure 3 This is a top view of the present invention;

[0019] Figure 4 yes Figure 3 Cross-sectional view at point AA;

[0020] Reference numerals: 1. Outer shell; 10. Heat dissipation vent; 11. Bottom shell; 12. Top shell; 2. Power supply board; 3. Strong magnet; 4. Control circuit board; 5. Charging coil; 6. Power interface; 7. Anti-slip pad; 8. Outer shell support. Detailed Implementation

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a vehicle-mounted dual-coil wireless charger includes a housing 1, a power extraction plate 2 embedded in the front of the housing 1, two strong magnets 3 installed on the front of the housing 1, and an energy storage device, a control circuit board 4, and two charging coils 5 installed inside the housing 1. The charging coils 5 are positioned opposite the power extraction plate 2, and the charging coils 5 and the energy storage device are electrically connected to the control circuit board 4.

[0022] When in use, place the phone on the power board 2, and the phone will be wirelessly charged through the control circuit board 4, two charging coils 5, and the energy storage device; the phone is attracted by two strong magnets 3 to prevent it from falling off during vehicle bumps; this utility model improves the compatibility and applicability of the wireless charger by using dual coils, and can also prevent the phone from falling off during vehicle bumps, making it more convenient to use.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the two charging coils 5 support multiple fast charging input protocols including QC3.0 / QC2.0 / PD3.0+PPS, and multiple output powers including 15W / 10W / 7.5W / 5W. The output powers of the two charging coils 5 are different. In this embodiment, the control circuit board 4 includes an MCU chip and multiple MOSFETs. An oscillation circuit is formed between the MCU chip and each MOSFET. The MCU chip is connected to the transmitter of the charging coil 5 to sense the voltage changes generated by the charging coil 5. When the mobile phone is placed on the power board 2, the mobile phone transmitter coil senses the load. If the mobile phone is detected, the MCU chip will send a control signal to drive the MOSFETs on the control circuit board 4 to form an oscillation circuit, so that the charging coil 5 generates analog AC current and generates an electromagnetic field to transmit charging to the secondary coil.

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a power interface 6 is provided on the back of the outer casing 1, and the power interface 6 is electrically connected to the energy storage device; in this embodiment, the energy storage device can be charged through the power interface 6.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the power board 2 has a cylindrical protrusion 21 on its front side, and the strong magnet 3 is embedded in the upper end of the cylindrical protrusion 21; in this embodiment, the strong magnet 3 is installed through the cylindrical protrusion 21.

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the front of the power-collecting board 2 is provided with an anti-slip pad 7; in this embodiment, the anti-slip pad 7 can further prevent the mobile phone from sliding after being adsorbed.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a plurality of housing brackets 8 are provided on the back of the housing 1; in this embodiment, the housing 1 can be installed and fixed by means of the housing brackets 8.

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a heat dissipation vent 10 is provided on the back of the outer casing 1; in this embodiment, the heat dissipation vent 10 can dissipate heat to the control circuit board 4.

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the outer shell 1 includes a bottom shell 11 and an upper shell 12. The upper end of the bottom shell 11 is fastened to the bottom end of the upper shell 12, and the power-collecting plate 2 is fixed to the upper end of the upper shell 12. In this embodiment, since the outer shell 1 is made by injection molding and is formed by fastening the bottom shell 11 and the upper shell 12, the injection molding difficulty of the outer shell 1 can be effectively reduced, and the production cost is lower.

[0030] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the scope defined by this utility model.

Claims

1. A vehicle-mounted dual-coil wireless charger, characterized by: The utility model provides a kind of power bank, including shell (1), the power board (2) embedded in the front of the shell (1), two strong magnets (3) are installed in the front of the shell (1), and in the electric energy storage, control circuit board (4) and two charging coils (5) installed in the shell (1), the charging coil (5) is opposite the power board (2) arrangement, the charging coil (5) and electric energy storage are electrically connected control circuit board (4).

2. The vehicle-mounted dual-coil wireless charger of claim 1, wherein, Two the charging coil (5) supports QC3.0 / QC2.0 / PD3.0+PPS multiple fast charging input protocol, supports 15W / 10W / 7.5W / 5W multiple output power, and the output power of two the charging coil (5) is different.

3. The vehicle-mounted dual-coil wireless charger of claim 1, wherein, The back of the shell (1) is provided with a power interface (6), and the power interface (6) is electrically connected to the electric energy storage.

4. The vehicle-mounted dual-coil wireless charger of claim 1, wherein, The front of the power board (2) is provided with a cylindrical protrusion (21), and the strong magnet (3) is embedded in the upper end of the cylindrical protrusion (21).

5. The vehicle-mounted dual-coil wireless charger of claim 1, wherein, The front of the power board (2) is provided with a non-slip pad (7).

6. The vehicle-mounted dual-coil wireless charger of claim 1, wherein, The back of the shell (1) is provided with a plurality of shell supports (8).

7. The vehicle-mounted dual-coil wireless charger of claim 1, wherein, The back of the shell (1) is provided with a heat dissipation port (10).

8. The vehicle-mounted dual-coil wireless charger of claim 1, wherein, The shell (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 board (2) is fixed to the upper end of the upper shell (12).

Images