Radio frequency identification (RFID) wireless charging type mobile phone support

Abstract

The utility model discloses a radio frequency identification (RFID) wireless charging type mobile phone support, which is characterized in that a support body is in wireless charging protocol communication with a mobile phone through a control module arranged in a transmitting plate, the charging state is monitored in real time, and a pulse-width modulation (PWM) signal of a driving module is dynamically adjusted, so that a transmitting coil generates high-frequency alternating current, and the magnetic field intensity can be amplified through the resonance design of a resonant capacitor and the transmitting coil; high-efficiency energy coupling is realized by penetrating through the back cover of the mobile phone, wireless charging is automatically triggered after the mobile phone is placed, and the mobile phone is clamped and fixed, so that a driver does not need to distract to operate a charging interface, does not need to charge the mobile phone through a charging wire, does not need to plug or pull out the charging wire, and can realize charging only by placing the mobile phone on the bracket; therefore, the problem that the charging wire is easily hooked and wound with a handlebar and riding equipment in the riding process is solved.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone holder technology, and more specifically, to an RFID wireless charging mobile phone holder. Background Technology

[0002] With the rapid development of smart technology, wireless charging has become one of the mainstream features of smartphones. More and more phones are equipped with wireless charging capabilities, playing a crucial role in various scenarios such as shopping, entertainment, and navigation. Especially when traveling, phones are used not only for communication but also for map navigation, music playback, health tracking, and many other purposes. However, prolonged use of these functions, particularly when using navigation apps, can lead to rapid battery drain. For cyclists, this means facing insufficient battery power during long journeys or outdoor adventures.

[0003] Currently, car phone holders on the market are mainly divided into two categories: mechanical clamping (such as vent type and suction cup type) and magnetic adsorption. While mechanical clamping and magnetic adsorption car phone holders meet basic user needs to a certain extent, they typically only provide a fixed position. Users need to carry their own charging cables to charge their phones. Because the distance between the phone on the car phone holder and the charging device is usually quite long, the charging cable is also quite long. Excessive cable length can pose safety hazards, such as the risk of cable snagging, thus limiting its usability. Specifically, the charging cable is too long and lacks an effective storage mechanism, making it easy to snag on handlebars or riding gear, potentially causing entanglement during emergency braking. Furthermore, plugging in, unplugging, and storing the charging cable is cumbersome.

[0004] Secondly, existing car phone holders have poor compatibility, not only making it difficult to accommodate phones of different sizes, but also having weak shockproof design, which can easily lead to the risk of the phone falling off on bumpy roads. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model provides an RFID wireless charging phone holder with wireless charging function. Users do not need to plug or unplug the charging cable; they can simply place their phone on the holder to charge it. This avoids the problem of charging cables getting tangled with handlebars or cycling equipment during riding. It is also compatible with phones of different sizes, clamping and fixing the phone to effectively prevent the phone from falling off on bumpy roads.

[0006] The technical solution of this utility model is as follows: An RFID wireless charging mobile phone holder, comprising:

[0007] The bracket body contains a transmitter plate, a transmitter coil, and a resonant capacitor. The transmitter plate has a built-in control module and a drive module. The control module communicates with the mobile phone via a wireless charging protocol, monitors the charging status in real time, and adjusts the output frequency and duty cycle of the drive module via a PWM signal. The drive module generates a high-frequency AC signal based on the PWM signal sent by the control module to drive the transmitter coil to generate an alternating magnetic field. The resonant capacitor resonates with the transmitter coil to amplify the magnetic field strength, so as to penetrate the back cover of the mobile phone and couple to the receiving coil.

[0008] The clamping assembly includes a first clamping arm and a second clamping arm movably mounted on the left and right sides of the bracket body. The first clamping arm and the second clamping arm are arranged opposite to each other, and the first clamping arm and the second clamping arm can move along a straight line and move closer to each other to clamp and limit the mobile phone.

[0009] Furthermore, it also includes a base bracket, which is disposed at the bottom of the bracket body and is used to support the mobile phone.

[0010] Furthermore, at least a portion of the first clamping arm and the second clamping arm are embedded in the bracket body, and both the first clamping arm and the second clamping arm include a claw body and a mounting body. The fixed end of the mounting body is fixedly connected to the claw body, and the free end of the mounting body extends into the bracket body and is connected to the limiting member. When the mounting body moves outward a predetermined distance, the limiting member abuts against the bracket body to prevent the mounting body from falling out of the bracket body.

[0011] Furthermore, the bracket body includes a housing and a cover. One end of the housing is provided with an opening. The cover covers the opening and is connected to the housing. An extension integral with the housing is provided inside the housing. At least a portion of the mounting body passes through the extension.

[0012] Furthermore, the mounting body is provided with a mounting groove extending along the length direction of the mounting body and a spring disposed in the mounting groove. The mounting body is provided with a first protrusion extending into the mounting groove. The first protrusion extends along the length direction of the mounting body. The extension is provided with a second protrusion extending into the mounting groove. One end of the spring is sleeved on the first protrusion, and the other end of the spring abuts against the second protrusion.

[0013] Furthermore, the diameter of the first protrusion gradually decreases along the free end of the mount towards the fixed end of the mount.

[0014] Furthermore, the housing is provided with a charging indicator light and a power indicator light.

[0015] Furthermore, both the shell and the cover are made of plastic.

[0016] Furthermore, the first clamping arm and the second clamping arm are made of ABS plastic.

[0017] The advantages of this utility model based on the above solution are as follows:

[0018] (1) The present invention provides an RFID wireless charging mobile phone holder. The holder body communicates with the mobile phone wireless charging protocol through the control module built into the transmitter board, monitors the charging status in real time and dynamically adjusts the PWM signal of the drive module to generate high-frequency AC current in the transmitting coil. The resonant design of the resonant capacitor and the transmitting coil can amplify the magnetic field strength and achieve efficient energy coupling through the back cover of the mobile phone. After the mobile phone is placed, wireless charging is automatically triggered and it is clamped and fixed. The driver does not need to operate the charging interface, does not need to charge the mobile phone with a charging cable, and does not need to plug and unplug the charging cable. The mobile phone can be charged simply by placing it on the holder, thereby avoiding the problem of the charging cable easily getting tangled with the handlebars and riding equipment during the ride.

[0019] (2) The present invention provides an RFID wireless charging mobile phone holder, wherein a first clamping arm and a second clamping arm are movably installed on the left and right sides of the holder body. The first clamping arm and the second clamping arm can move along a straight line and achieve clamping and limiting of the mobile phone by moving closer to each other, which can effectively prevent the risk of the mobile phone falling off on bumpy roads or in the case of rapid acceleration. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the RFID wireless charging mobile phone holder in an embodiment of the present utility model.

[0022] Figure 2 This is a cross-sectional view of the RFID wireless charging mobile phone holder in an embodiment of this utility model.

[0023] Figure 3 This is a schematic diagram of the internal structure of the RFID wireless charging mobile phone holder in an embodiment of the present utility model.

[0024] Figure 4 This is a schematic diagram of the end face structure of the RFID wireless charging mobile phone holder in this embodiment of the present utility model.

[0025] In the figure, 1 is the bracket body; 11 is the housing; 111 is the extension; 1111 is the second protrusion; 12 is the cover; 2 is the clamping assembly; 2a is the first clamping arm; 2b is the second clamping arm; 21 is the claw body; 22 is the mounting body; 221 is the mounting groove; 222 is the first protrusion; 3 is the base bracket; 4 is the limiting component; 5 is the spring; 6 is the charging indicator light; and 7 is the power indicator light. Detailed Implementation

[0026] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present invention by way of example, but should not be used to limit the scope of the present invention, that is, the present invention is not limited to the described embodiments.

[0027] To better understand this utility model, the following description, in conjunction with the accompanying drawings and embodiments, will further illustrate the present utility model:

[0028] See Figure 1 As shown in the figure, an RFID wireless charging mobile phone holder provided in this embodiment of the present invention includes a holder body 1 and a clamping assembly 2.

[0029] In this embodiment, the bracket body 1 is equipped with a transmitter plate, a transmitter coil, and a resonant capacitor. The transmitter plate of the bracket body has a built-in control module and a drive module. The control module of the bracket body communicates with the mobile phone through a wireless charging protocol (such as the Qi charging protocol), monitors the charging status in real time, and adjusts the output frequency and duty cycle of the drive module of the bracket body through a PWM signal. The drive module of the bracket body generates a high-frequency AC signal according to the PWM signal sent by the control module of the bracket body to drive the transmitter coil of the bracket body to generate an alternating magnetic field. The transmitter coil and the resonant capacitor form an LC resonant circuit, which amplifies the magnetic field strength through the resonance effect, improves the energy transmission efficiency, and penetrates the metal back cover of the mobile phone. The receiving coil built into the mobile phone senses the alternating magnetic field and generates an induced current, which is rectified and regulated to charge the battery.

[0030] The control module is a microcontroller (MCU) that can run a wireless charging protocol stack (such as the Qi standard), communicate bidirectionally with the mobile phone, receive and parse the charging requests sent by the mobile phone (such as 5W / 10W / 15W), and then generate PWM signals to control the output frequency and duty cycle of the drive module. At the same time, it collects temperature sensor and current / voltage feedback signals in real time and executes safety protection logic.

[0031] The drive module includes power MOSFET transistors and half-bridge / full-bridge drive circuits. The MOSFET transistors, as high-frequency switching devices, turn on / off according to the PWM signal to convert DC power into high-frequency AC power. The half-bridge / full-bridge drive circuits are used to amplify the PWM signal output by the MCU, drive the MOSFET transistors to switch synchronously, and at the same time provide dead time control to avoid shoot-through short circuits between the upper and lower bridge arms.

[0032] Specifically, the microcontroller provided in this embodiment uses I 2 The C / SPI bus communicates with the wireless charging protocol chip to analyze the phone's charging needs. The wireless charging protocol chip converts the needs into PWM parameters (frequency, duty cycle) and sends them to the microcontroller. The microcontroller generates a corresponding PWM signal and outputs it to the driver module through GPIO pins. The half-bridge / full-bridge driver circuit receives the PWM signal and controls the power MOSFET transistors to conduct alternately, converting DC power into high-frequency AC power. The high-frequency AC power generates an alternating magnetic field through the transmitting coil. The transmitting coil and the resonant capacitor form an LC resonant circuit, which amplifies the magnetic field strength through resonance, improves energy transmission efficiency, and penetrates the phone's metal back cover. The phone's built-in receiving coil senses the alternating magnetic field and generates an induced current, which is rectified and regulated to charge the battery.

[0033] It should be noted that this embodiment does not involve improvements to the control module, drive module, transmitting coil, resonant capacitor, and half-bridge / full-bridge drive circuit. Those skilled in the art can obtain the corresponding circuits in the prior art to realize the wireless charging function. Therefore, this embodiment does not describe the circuits in detail.

[0034] In this embodiment, the bracket body clamping assembly 2 includes a first clamping arm 2a and a second clamping arm 2b movably installed on the left and right sides of the bracket body 1. The first clamping arm 2a and the second clamping arm 2b are arranged opposite to each other, and the first clamping arm 2a and the second clamping arm 2b can move along a straight line and move closer to each other to achieve clamping and limiting of the mobile phone.

[0035] Specifically, the RFID wireless charging mobile phone holder provided in this embodiment also includes a base bracket 3. The base bracket 3 is disposed at the bottom of the bracket body 1 and is used to support the mobile phone.

[0036] The first clamping arm 2a and the second clamping arm 2b of the bracket body are at least partially embedded in the bracket body 1. Both the first clamping arm 2a and the second clamping arm 2b include a claw body 21 and a mounting body 22. The fixed end of the mounting body 22 is fixedly connected to the claw body 21, and the free end of the mounting body 22 extends into the bracket body 1 and is connected to the limiting member 4. When the mounting body 22 moves outward a predetermined distance, the limiting member 4 abuts against the bracket body 1 to prevent the mounting body 22 from falling out of the bracket body 1.

[0037] In this embodiment, each gripping arm consists of a claw body 21 and a mounting body 22. The claw body 21 directly contacts and secures the mobile phone. The fixed end of the mounting body 22 is fixedly connected to the claw body 21, ensuring the stability of the claw body 21 during use. The free end extends into the bracket body 1 and is connected to the limiting member 4, which allows the gripping arm to move within a certain range to accommodate mobile phones of different sizes. When the mounting body 22 moves outward a predetermined distance, the limiting member 4 abuts against the bracket body 1 to prevent the mounting body 22 from falling out of the bracket body 1. This not only ensures that the gripping arm can flexibly adjust its position to accommodate different mobile phone sizes, but also avoids component damage or loss due to excessive stretching.

[0038] See Figure 2 As shown, the bracket body 1 includes a housing 11 and a cover 12. One end of the bracket body housing 11 is provided with an open opening. The bracket body cover 12 covers the open opening of the bracket body and is connected to the bracket body housing 11. An extension 111, which is integrally formed with the bracket body housing 11, is provided inside the bracket body housing 11. At least a portion of the bracket body mounting body 22 passes through the bracket body extension 111. This design allows the extension 111 to guide the movement of the mounting body 22. When the position of the clamping arm is adjusted, the mounting body 22 will move smoothly along the preset path, avoiding possible shaking or jamming.

[0039] See Figures 2-3 As shown, the bracket body mounting body 22 is provided with a mounting groove 221 extending along the length direction of the mounting body 22 and a spring 5 disposed in the mounting groove 221. The bracket body mounting body 22 is provided with a first protrusion 222 protruding into the mounting groove 221. The first protrusion 222 extends along the length direction of the bracket body mounting body 22. The bracket body extension 111 is provided with a second protrusion 1111 protruding into the mounting groove 221. One end of the bracket body spring 5 is sleeved on the first protrusion 222, and the other end of the bracket body spring 5 abuts against the second protrusion 1111.

[0040] When no external force is applied, the spring 5 is in its natural length or slightly compressed state. At this time, due to the restoring force of the spring 5, the first protrusion 222 is pushed inward, causing the clamping arm to remain closed or maintain a certain tension in preparation for receiving the mobile phone.

[0041] When the phone is placed in the holder, the phone exerts an outward force on the clamping arm. This force overcomes the restoring force of the spring 5, causing the clamping arm to move outward. As the clamping arm moves, the mounting body 22 also moves outward along the extension 111. During this process, the spring 5 is further compressed. When the phone is fully in place, the external force disappears, and the restoring force of the spring 5 causes the clamping arm to move inward until it tightly clamps the phone. At this point, the distance between the first protrusion 222 and the second protrusion 1111 is relatively fixed. The elastic force provided by the spring 5 ensures that the phone is securely clamped and also prevents the phone from being damaged due to excessive clamping.

[0042] When you want to remove the phone, the clamping arm moves outward again, and the spring 5 continues to be compressed. At this time, you only need to apply a little force to remove the phone from the clamping arm. Once the phone is out of the clamping range, the restoring force of the spring 5 causes the clamping arm to return to its initial position, ready for the next use.

[0043] Furthermore, along the free end of the bracket body mounting 22 towards the fixed end near the bracket body mounting 22, the diameter of the first protrusion 222 of the bracket body gradually decreases, forming a conical or stepped structure. This design ensures that when one end of the spring 5 is compressed to the maximum diameter of the first protrusion 222, that end of the spring 5 is stably fitted onto the first protrusion 222, preventing the spring 5 from detaching from the first protrusion 222.

[0044] See Figure 4 As shown, the bracket body housing 11 is equipped with a charging indicator light 6 and a power indicator light 7.

[0045] Preferably, the bracket body shell 11 and the bracket body cover 12 are both plastic parts, and the bracket body first clamping arm 2a and the bracket body second clamping arm 2b are ABS plastic parts.

[0046] It should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art, or the orientation or positional relationship that the product is usually placed in during use. It is only for the purpose of facilitating the description of this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0047] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0048] The present utility model patent has been described above with reference to the accompanying drawings. Obviously, the implementation of the present utility model patent is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present utility model patent, or the direct application of the inventive concept and technical solution of the present utility model patent to other occasions without modification, are all within the protection scope of the present utility model.

Claims

1. An RFID wireless charging mobile phone holder, characterized in that, include: The bracket body (1) contains a transmitter plate, a transmitter coil, and a resonant capacitor. The transmitter plate has a built-in control module and a drive module. The control module communicates with the mobile phone via a wireless charging protocol, monitors the charging status in real time, and adjusts the output frequency and duty cycle of the drive module via a PWM signal. The drive module generates a high-frequency AC signal based on the PWM signal sent by the control module to drive the transmitter coil to generate an alternating magnetic field. The resonant capacitor resonates with the transmitter coil to amplify the magnetic field strength, so as to penetrate the back cover of the mobile phone and couple to the receiving coil. The clamping assembly (2) includes a first clamping arm (2a) and a second clamping arm (2b) movably mounted on the left and right sides of the bracket body (1). The first clamping arm (2a) and the second clamping arm (2b) are arranged opposite to each other, and the first clamping arm (2a) and the second clamping arm (2b) can move along a straight line and move closer to each other to clamp and limit the mobile phone.

2. The RFID wireless charging mobile phone holder as described in claim 1, characterized in that: It also includes a base bracket (3), which is disposed at the bottom of the bracket body (1) and is used to support the mobile phone.

3. The RFID wireless charging mobile phone holder as described in claim 2, characterized in that: At least a portion of the first clamping arm (2a) and the second clamping arm (2b) are embedded in the bracket body (1), and both the first clamping arm (2a) and the second clamping arm (2b) include a claw body (21) and a mounting body (22). The fixed end of the mounting body (22) is fixedly connected to the claw body (21), and the free end of the mounting body (22) extends into the bracket body (1) and is connected to the limiting member (4). When the mounting body (22) moves outward a predetermined distance, the limiting member (4) abuts against the bracket body (1) to prevent the mounting body (22) from falling out of the bracket body (1).

4. The RFID wireless charging mobile phone holder as described in claim 3, characterized in that: The bracket body (1) includes a shell (11) and a cover (12). One end of the shell (11) is provided with an open opening. The cover (12) covers the open opening and is connected to the shell (11). An extension (111) integral with the shell (11) is provided inside the shell (11). At least a portion of the mounting body (22) passes through the extension (111).

5. The RFID wireless charging mobile phone holder as described in claim 4, characterized in that: The mounting body (22) is provided with a mounting groove (221) extending along the length direction of the mounting body (22) and a spring (5) disposed in the mounting groove (221). The mounting body (22) is provided with a first protrusion (222) protruding into the mounting groove (221). The first protrusion (222) extends along the length direction of the mounting body (22). The extension (111) is provided with a second protrusion (1111) protruding into the mounting groove (221). One end of the spring (5) is sleeved on the first protrusion (222), and the other end of the spring (5) abuts against the second protrusion (1111).

6. The RFID wireless charging mobile phone holder as described in claim 5, characterized in that: Along the free end of the mounting body (22) toward the fixed end closer to the mounting body (22), the diameter of the first protrusion (222) gradually decreases.

7. The RFID wireless charging mobile phone holder as described in claim 5, characterized in that: The housing (11) is provided with a charging indicator light (6) and a power indicator light (7).

8. The RFID wireless charging mobile phone holder as described in claim 5, characterized in that: Both the shell (11) and the cover (12) are made of plastic.

9. The RFID wireless charging mobile phone holder as described in claim 5, characterized in that: The first clamping arm (2a) and the second clamping arm (2b) are ABS plastic parts.

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