Wireless charger overheating protection device

Abstract

The utility model relates to an overheat protection device for a wireless charger. The overheat protection device comprises a shell, a top cover, a transmitting end module, a receiving end module, a thermoswitch, a wire and an upper top assembly, the transmitting end module is assembled on the inner bottom wall of the shell, the top cover is arranged in the shell, and the receiving end module is arranged in the top cover. According to the overheating protection device of the wireless charger, the thermoswitch and the electromagnetic ring are integrated, automatic overheating detection and response in the wireless charging process are achieved, once overheating is detected, the thermoswitch is switched off, the electromagnetic ring loses magnetism, the upper jacking assembly automatically jacks up electronic equipment under the action of the spring, and the wireless charger is protected. According to the wireless charger, the damage of high temperature to the electronic equipment and the wireless charger is effectively prevented, the use safety is improved, the gap between the electronic equipment and the top cover is increased under the overheat condition, heat can be quickly dissipated to the environment, the temperature in the equipment is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless chargers, in particular to an overheating protection device for a wireless charger. Background Art

[0002] A wireless charger is a device that uses wireless charging technology to charge devices (such as smartphones, tablets, smart watches, etc.) through electromagnetic induction, radio waves, magnetic field resonance, etc. This charging method does not require the use of traditional physical connection cables such as USB cables or charger plugs, thus providing a more convenient and flexible charging experience.

[0003] In terms of overheating protection for wireless charging, although the current common practice is to cut off the circuit connection between the charger and the electronic device when overheating is detected to prevent further heat generation and damage, this protection mechanism still has some defects in some cases. For example, even if the circuit connection is cut off, the charger and the electronic device still maintain physical contact, which means that the heat inside the two may not be able to dissipate quickly and effectively into the environment. Prolonged contact may cause the battery temperature inside the electronic device to rise, increasing the risk of thermal damage. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a wireless charger overheating protection device, which solves the problem that the charger and the electronic device still maintain physical contact, which means that the heat inside the two may not be able to dissipate quickly and effectively into the environment.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a wireless charger overheating protection device, comprising a housing, a top cover, a transmitter module, a receiver module, a thermal switch, a wire, and an upper top assembly;

[0006] The transmitting end module is assembled on the inner bottom wall of the housing, the top cover is arranged inside the housing, the receiving end module is arranged inside the top cover, and the receiving end module is electrically connected to the transmitting end module;

[0007] The transmitter module is electrically connected to the wire via a thermal switch to control the circuit connection between the transmitter module and the wire according to the temperature inside the housing;

[0008] The upper assembly is assembled inside the housing, and the upper assembly includes at least two electromagnetic rings, a bearing ring, a top ring and a spring;

[0009] At least two electromagnetic rings are arranged on the inner peripheral wall of the shell, the lower electromagnetic ring is fixedly connected to the inner peripheral wall of the shell, and the upper electromagnetic ring is slidably connected to the inside of the shell;

[0010] The carrying ring is assembled on the inner side of the upper electromagnetic ring, the top ring is assembled on the upper end surface of the electromagnetic ring, an arc-shaped opening adapted to the top ring is opened inside the top cover, and the spring is arranged between the carrying ring and the inner bottom wall of the shell.

[0011] Furthermore, the axial lines of the two electromagnetic rings are located on the same vertical line.

[0012] Furthermore, both electromagnetic rings are electrically connected to the wire via a thermal switch.

[0013] Furthermore, the magnetic poles of the two electromagnetic rings are opposite.

[0014] Furthermore, at least two square openings are opened on the upper end surface of the top ring, and the upper end surface of the top ring and the upper surface of the top cover are located on the same plane.

[0015] Furthermore, a limit ring is installed on the inner peripheral wall of the shell.

[0016] Furthermore, the limiting ring is located above the upper electromagnetic ring.

[0017] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0018] This wireless charger overheat protection device integrates a thermal switch and an electromagnetic ring to achieve automatic detection and response to overheating during the wireless charging process. Once overheating is detected, the thermal switch is disconnected, the electromagnetic ring loses its magnetism, and the upper assembly automatically lifts the electronic device under the action of the spring, effectively preventing high temperature from damaging the electronic device and the wireless charger, and improving safety in use. In the event of overheating, the gap between the electronic device and the top cover increases, which is conducive to the rapid dissipation of heat into the environment, reducing the temperature inside the device and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the explosion structure of the utility model.

[0022] In the figure: 1. Housing; 2. Transmitter module; 3. Receiver module; 4. Thermal switch; 5. Wire; 6. Upper assembly; 601. Electromagnetic ring; 602. Loading ring; 603. Top ring; 604. Spring; 605. Limiting ring; 7. Top cover. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1 In this embodiment, a wireless charger overheat protection device is used to separate the electronic device from the charger after the wireless charger is powered off due to overheating, so that a certain gap is maintained between the two to increase air circulation and facilitate heat dissipation between the electronic device and the charger;

[0025] Specifically, it includes a shell 1, a top cover 7, a transmitter module 2, a receiver module 3, a thermal switch 4, a wire 5 and an upper top component 6; the transmitter module 2 is assembled on the inner bottom wall of the shell 1, the top cover 7 is arranged inside the shell 1, the receiver module 3 is arranged inside the top cover 7, and the receiver module 3 is electrically connected to the transmitter module 2; the transmitter module 2 is electrically connected to the wire 5 through the thermal switch 4 to control the circuit connection between the transmitter module 2 and the wire 5 according to the temperature inside the shell 1; the upper top component 6 is assembled inside the shell 1.

[0026] In actual practical application, the temperature inside the shell 1 is monitored by the thermal switch 4. When the temperature inside the shell 1 reaches or exceeds the preset value, the contacts of the thermal switch 4 will close or open, thereby cutting off or restoring the power supply of the circuit. When the thermal switch 4 is in the closed state, the electronic device and the receiving end module 3 are in a fitted state. Conversely, when the temperature exceeds the preset value of the thermal switch 4, the thermal switch 4 will automatically disconnect. At this time, the upper top component 6 will move upward and lift the electronic device at the same time, so that a certain gap is maintained between the electronic device and the top cover 7.

[0027] It should be noted that the transmitter module 2 and the receiver module 3 in this embodiment are both existing technologies that have been disclosed in wireless charger technology. The transmitter module 2 includes a circuit board and related electronic components, which are used to convert the industrial frequency AC power supply into a high-frequency pulse power supply to provide an excitation signal for the transmitting coil. The transmitting module also includes a control circuit for monitoring and adjusting the transmission power to ensure the safety and efficiency of the charging process.

[0028] In addition, the receiving end module 3 includes a rectifier circuit and a charging control circuit, which are used to convert the received high-frequency current into direct current and control the charging voltage and current to ensure that the battery can be charged safely and quickly. The receiving module may also include a battery management circuit for monitoring the battery status and preventing abnormal conditions such as overcharging and over-discharging.

[0029] See also Figure 2-3 In order to separate the electronic device from the wireless charger after the overheat protection is turned on, the upper top assembly 6 in this embodiment includes at least two electromagnetic rings 601, a carrying ring 602, a top ring 603 and a spring 604;

[0030] At least two electromagnetic rings 601 are arranged on the inner wall of the shell 1, the lower electromagnetic ring 601 is fixedly connected to the inner wall of the shell 1, and the upper electromagnetic ring 601 is slidably connected to the inside of the shell 1; the carrying ring 602 is assembled on the inner side of the upper electromagnetic ring 601, and the top ring 603 is assembled on the upper end surface of the electromagnetic ring 601. An arc-shaped opening that is compatible with the top ring 603 is opened inside the top cover 7, and the spring 604 is arranged between the carrying ring 602 and the inner bottom wall of the shell 1.

[0031] It should be noted that, in order to achieve connection and closure between the two electromagnetic rings 601 , the two electromagnetic rings 601 in this embodiment are electrically connected to the wire 5 via the thermal switch 4 .

[0032] In actual practical application, when the thermal switch 4 is closed, the two electromagnetic rings 601 generate magnetism with opposite poles, so that the two electromagnetic rings 601 fit together. At this time, the upper end surface of the top ring 603 and the upper end surface of the top cover 7 are on the same plane, and when the two electromagnetic rings 601 are attracted, the supporting ring 602 will also move downward, and at the same time squeeze the spring 604, so that the spring 604 has a certain elastic potential energy.

[0033] When the thermal switch 4 is disconnected, the two electromagnetic rings 601 lose their magnetism, and the spring 604 automatically rebounds when not constrained, thereby pushing the supporting ring 602, the upper electromagnetic ring 601 and the top ring 603 to move upward. At this time, the electronic device located on the top cover 7 can be lifted up, so that a certain gap is maintained between the electronic device and the top cover 7, so that the heat inside the two can be quickly dissipated into the environment.

[0034] In summary, by integrating thermal switch 4 with electromagnetic ring 601, automatic overheat detection and response are achieved during wireless charging. Once overheating is detected, thermal switch 4 disconnects, electromagnetic ring 601 loses its magnetism, and upper assembly 6, activated by spring 604, automatically lifts the electronic device. This effectively prevents high-temperature damage to the electronic device and the wireless charger, improving safety. In the event of overheating, the gap between the electronic device and top cover 7 increases, facilitating rapid heat dissipation into the environment, reducing the internal temperature of the device and extending its service life.

[0035] In actual configuration, in order to ensure that the two electromagnetic rings 601 can fit completely together, the axial lines of the two electromagnetic rings 601 in this embodiment are located on the same vertical line.

[0036] Furthermore, in order to ensure air flow between the electronic device and the top cover 7 , at least two square openings are opened on the upper end surface of the top ring 603 , and the upper end surface of the top ring 603 and the upper surface of the top cover 7 are located on the same plane.

[0037] In actual settings, the opening of the square opening provides an additional air circulation channel for the space between the electronic device and the top cover 7. When the electronic device is lifted up and a gap is formed between it and the top cover 7, air can flow more smoothly through this square opening, further enhancing the heat dissipation effect.

[0038] In addition, in order to limit the rebound range of the spring 604 and at the same time limit the moving distance of the upper electromagnetic ring 601, a limit ring 605 is installed on the inner wall of the shell 1 in this embodiment. The limit ring 605 is located above the upper electromagnetic ring 601, and the distance between the limit ring 605 and the upper electromagnetic ring 601 is five millimeters.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wireless charger overheat protection device, characterized by: It comprises a housing (1), a top cover (7), a transmitting end module (2), a receiving end module (3), a thermal switch (4), a wire (5) and an upper top assembly (6); The transmitting end module (2) is assembled on the inner bottom wall of the housing (1), the top cover (7) is arranged inside the housing (1), the receiving end module (3) is arranged inside the top cover (7), and the receiving end module (3) is electrically connected to the transmitting end module (2); The transmitter module (2) is electrically connected to the wire (5) via a thermal switch (4) so as to control the circuit connection between the transmitter module (2) and the wire (5) according to the temperature inside the housing (1); The upper top assembly (6) is assembled inside the housing (1), and the upper top assembly (6) comprises at least two electromagnetic rings (601), a bearing ring (602), a top ring (603) and a spring (604); At least two electromagnetic rings (601) are arranged on the inner peripheral wall of the housing (1), the lower electromagnetic ring (601) is fixedly connected to the inner peripheral wall of the housing (1), and the upper electromagnetic ring (601) is slidably connected to the inside of the housing (1); The carrying ring (602) is assembled on the inner side of the upper electromagnetic ring (601), the top ring (603) is assembled on the upper end surface of the electromagnetic ring (601), an arc-shaped opening adapted to the top ring (603) is opened inside the top cover (7), and the spring (604) is arranged between the carrying ring (602) and the inner bottom wall of the housing (1).

2. The wireless charger overheat protection device according to claim 1, characterized in that: The axial lines of the two electromagnetic rings (601) are located on the same vertical line.

3. The wireless charger overheat protection device according to claim 1, characterized in that: Both electromagnetic rings (601) are electrically connected to the wire (5) via a thermal switch (4).

4. The wireless charger overheat protection device according to claim 1, characterized in that: The magnetic poles of the two electromagnetic rings (601) are opposite.

5. The wireless charger overheat protection device according to claim 1, characterized in that: At least two square openings are provided on the upper end surface of the top ring (603), and the upper end surface of the top ring (603) and the upper surface of the top cover (7) are located on the same plane.

6. The wireless charger overheat protection device according to claim 1, characterized in that: A limiting ring (605) is installed on the inner peripheral wall of the housing (1).

7. The wireless charger overheat protection device according to claim 6, characterized in that: The limiting ring (605) is located above the upper electromagnetic ring (601).

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