A magnetic wireless charger with overheat protection

Abstract

The utility model belongs to wireless charging technical field especially relates to a kind of magnetic attraction wireless charger of anti-overheating protection, including organic shell, charger body, connecting plate and guide rod etc., two guide rods of front and rear distribution are fixed with in the shell inside both sides, one connecting plate is slidably arranged between the two guide rods vertically aligned, charger body is installed between two connecting plates, charger body passes through shell and sliding fit, and charger body top surface and the placement surface of shell keep flush. Through the cooperative work of temperature probe, temperature sensor, control module, fan, air pipe, air outlet frame, electromagnet and iron block, an intelligent anti-overheating protection system is constructed, the system can respond in time when detecting that the temperature of mobile phone is abnormally increased, automatically cut off charging circuit and start heat dissipation mechanism, effectively inhibit temperature rise, relieve the rapid aging of mobile phone battery and the performance degradation of charger components, significantly improve charging safety and overall equipment service life.

Description

Technical Field

[0001] This utility model belongs to the field of wireless charging technology, and in particular relates to a magnetic wireless charger with overheat protection. Background Technology

[0002] With the widespread application of magnetic wireless charging technology, its convenient "just attach and charge" feature significantly enhances the user charging experience. It eliminates the need for repeated cable plugging and unplugging, enabling quick and precise magnetic alignment and a more efficient and smooth charging process. Thanks to its ease of operation and reliable connection, this technology has rapidly gained popularity in the smartphone industry, becoming a core feature of many flagship models and accessories, continuously driving the development of smart devices towards wireless and intelligent solutions.

[0003] However, in real-world applications, the contact area between the magnetic wireless charger and the phone generates significant heat due to efficiency losses during energy transfer. This continuous accumulation of heat causes the temperatures at both ends of the charger and the phone to rise. When the temperature exceeds the normal range and reaches an excessively high level, it will accelerate the chemical reaction process of the phone battery, thereby accelerating battery aging and significantly shortening the battery's lifespan. On the other hand, the high-temperature environment will also cause thermal damage to various components inside the charger, altering their physical and chemical properties, thus affecting the charger's operational stability and reducing its overall lifespan.

[0004] Therefore, there is a particular need for a magnetic wireless charger with overheat protection to solve the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of magnetic wireless charging, which causes serious heat generation due to energy loss, easily leads to aging of mobile phone batteries and thermal damage to charger components, affecting the performance and service life of both parties, this utility model provides a magnetic wireless charger with overheat protection.

[0006] This utility model is achieved through the following technical approach: a magnetic wireless charger with overheat protection, comprising a housing, a charger body, a connecting plate, guide rods, and a return spring. Two guide rods, arranged front and rear, are fixedly connected to both sides inside the housing. A connecting plate is slidably disposed between the two longitudinally aligned guide rods. The charger body is installed between the two connecting plates, passing through the housing and slidingly engaging with it. The top surface of the charger body is flush with the placement surface of the housing. A return spring is sleeved at one end of each guide rod, and both ends of the return spring are fixedly connected to the corresponding guide rod and the corresponding connecting plate, respectively. The charger body also includes a temperature probe, a temperature sensor, a control module, a fan, an air duct, and an air outlet frame. The electromagnet and iron blocks, along with the temperature probe, are embedded and fixed to the charger body, with both having the same thickness. The temperature sensor and control module are arranged side by side in the lower inner area of ​​the casing. The temperature probe and temperature sensor are electrically connected. The fan is installed in the lower part of the casing, with multiple equidistant air ducts fixed to its upper sides. An air outlet frame is fixed between one end of the horizontally aligned air ducts, and the air outlet frame fits tightly against the inner side wall of the casing. An electromagnet is fixed to the other end of each guide rod. Two symmetrically distributed iron blocks are fixed to the bottom of each connecting plate. The number of iron blocks is the same as the number of electromagnets, and they are distributed vertically in correspondence. The temperature sensor, fan, and electromagnet are all electrically connected to the control module.

[0007] To further explain, it also includes a clamping frame, sleeves, and telescopic springs. Multiple sleeves distributed along a rectangular direction are fixedly connected to the lower part of the fan. A clamping frame is slidably arranged between two sleeves distributed longitudinally. The two clamping frames are arranged opposite to each other. Two telescopic springs are symmetrically distributed on the lower part of each clamping frame. The two ends of the telescopic springs are fixedly connected to the corresponding sleeve and the corresponding clamping frame, respectively.

[0008] To further explain, it also includes a support plate and rotating rods. The support plate is installed at the bottom of the fan, and multiple rotating rods are rotatably arranged on it in an X-shaped pattern. The end of the rotating rod connected to the support plate is provided with a protruding limiting structure, and the other end of the rotating rod not connected to the support plate is provided with an anti-slip pad.

[0009] To further explain, it also includes a cooling element, with one cooling element installed inside each air outlet frame, and the cooling element is electrically connected to the control module.

[0010] To further explain, it also includes a protective pad, with a protective pad fixed to the clamping surface on the upper part of each clamping frame.

[0011] To further explain, it also includes multiple ventilation openings at several corners of the casing.

[0012] Beneficial effects: 1. Through the coordinated work of temperature probe, temperature sensor, control module, fan, air duct, air outlet frame, electromagnet and iron block, an intelligent overheat protection system is constructed. This system can respond in time when it detects an abnormal rise in the mobile phone temperature, automatically cut off the charging circuit and start the heat dissipation mechanism, effectively suppress the temperature rise, alleviate the premature aging of the mobile phone battery and the performance degradation of the charger components, and significantly improve charging safety and the overall service life of the equipment.

[0013] 2. The elastic clamping structure, consisting of a clamping frame, sleeve, and telescopic spring, can adapt to mobile phones of different sizes, achieving stable clamping and convenient loading and unloading. Combined with protective pads, it effectively protects the mobile phone casing, improving the user's convenience and stability in handheld or fixed scenarios.

[0014] 3. The design of the support plate and rotating rod allows the charger to be unfolded and supported, raising the casing and ensuring that the air intake at the bottom of the fan is unobstructed. This avoids airflow obstruction caused by placing the charger on the ground, effectively improving the operating efficiency of the heat dissipation system and ensuring the stability of long-term charging. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a first partial sectional view of the housing component of this utility model.

[0017] Figure 3 This is a partial sectional view of the fan and air outlet frame components of this utility model.

[0018] Figure 4 This is a second partial cross-sectional view of the shell component of this utility model.

[0019] Figure 5 This is a partial sectional view of the sleeve component of this utility model.

[0020] Figure 6 This is a three-dimensional structural diagram of the fan, support plate, and rotating rod components of this utility model.

[0021] The markings in the attached diagram are as follows: 1. Housing; 2. Charger body; 20. Connecting plate; 30. Temperature probe; 31. Temperature sensor; 32. Control module; 33. Fan; 34. Air duct; 35. Air outlet frame; 36. Cooling element; 37. Guide rod; 38. Electromagnet; 39. Iron block; 310. Return spring; 40. Clamping frame; 41. Sleeve; 42. Telescopic spring; 43. Protective pad; 50. Support plate; 51. Rotating rod; 6. Vent. Detailed Implementation

[0022] Example: A magnetic wireless charger with overheat protection, such as... Figures 1-6As shown, the device includes a housing 1, a charger body 2, a connecting plate 20, guide rods 37, and a reset spring 310. Two guide rods 37, distributed front to back, are fixedly connected to the left and right sides inside the housing 1. A connecting plate 20 is slidably disposed between the two longitudinally aligned guide rods 37. The charger body 2 is bolted between the two connecting plates 20, passing through the housing 1 and slidingly engaging with it. The top surface of the charger body 2 is flush with the placement surface of the housing 1 to ensure a stable fit when placing a mobile phone. A reset spring 310 is fitted onto the upper end of each guide rod 37. The upper and lower ends of the reset spring 310 are fixedly connected to the corresponding guide rod 37 and the corresponding connecting plate 20, respectively, providing a reset force for the connecting plate 20. The reset spring 310 is a high-strength spring with good fatigue resistance, allowing for long-term stable operation. Four ventilation openings 6 are provided at the four corners of the housing 1. The device also includes a temperature probe 30, a temperature sensor 31, a control module 32, a fan 33, an air duct 34, and an air outlet frame. 35, cooling element 36, electromagnet 38, and iron block 39; temperature probe 30 is fixedly connected to the charger body 2 in an embedded manner, and the thickness of the two is the same; temperature sensor 31 and control module 32 are arranged side by side and bolted to the lower inner area of ​​the housing 1; temperature probe 30 and temperature sensor 31 are electrically connected; fan 33 is bolted to the lower part of housing 1; three air ducts 34 are fixedly connected to the front and rear sides of its upper part; an air outlet frame 35 is fixedly connected between the upper ends of the three horizontally aligned air ducts 34; the air outlet frame 35 is tightly attached to the inner side wall of housing 1; a cooling element 36 is bolted to the inside of each air outlet frame 35; an electromagnet 38 is fixedly connected to the lower end of each guide rod 37; two iron blocks 39 are fixedly connected to the bottom of each connecting plate 20; the number of iron blocks 39 is the same as the number of electromagnets 38, and they are distributed vertically. Temperature sensor 31, fan 33, cooling element 36, and electromagnet 38 are all electrically connected to control module 32.

[0023] like Figure 1 and Figure 5 As shown, it also includes a clamping frame 40, a sleeve 41, a telescopic spring 42, and a protective pad 43. The lower part of the fan 33 is fixedly connected to four sleeves 41 distributed along a rectangular direction. A clamping frame 40 is slidably arranged between two longitudinally distributed sleeves 41. The two clamping frames 40 are arranged opposite each other and can cooperate to clamp the mobile phone. Each clamping frame 40 is fitted with two symmetrically distributed telescopic springs 42 at its lower part. The two ends of the telescopic springs 42 are fixedly connected to the corresponding sleeves 41 and the corresponding clamping frames 40, respectively, to provide a reset force for the clamping frame 40. The telescopic springs 42 are also high-strength springs. A protective pad 43 is fixedly connected to the clamping surface on the upper part of each clamping frame 40. The protective pad 43 is made of silicone or rubber to prevent scratches on the mobile phone shell during clamping.

[0024] like Figure 1 and Figure 6As shown, it also includes a support plate 50 and rotating rods 51. The support plate 50 is bolted to the lower part of the fan 33, and four rotating rods 51 are rotatably arranged on it in an X-shape. The end of the rotating rod 51 connected to the support plate 50 is provided with a protruding limiting structure. When the rotating rod 51 rotates outward to a predetermined angle, the structure abuts against the edge of the support plate 50, limiting the rotating rod 51 from continuing to rotate, thus achieving self-locking. The other end of the rotating rod 51 not connected to the support plate 50 is provided with an anti-slip pad to improve support stability and prevent slippage.

[0025] When in use, the user first rotates the rotating rod 51 off the support plate 50 so that the rotating rod 51 protrudes from the limiting structure and abuts against the edge of the support plate 50 to form a stable support structure. After placing the charger on the table, the rotating rod 51 can support it to a certain height to ensure that there is enough space between the bottom air inlet of the fan 33 and the table to ensure air circulation. Then push the two clamps 40 outward. As the clamps 40 move outward, the telescopic spring 42 is compressed. At this time, place the phone screen-upside-up on the placement surface of the casing 1. The magnetic attraction makes the back of the phone automatically align and stick to the charger body 2, and wireless charging begins. After slowly releasing the two clamps 40, the telescopic spring 42 returns to its original state, pushes the two clamps 40 inward, clamps the side of the phone, and achieves stable fixation. At the same time, the protective pad 43 prevents scratches on the phone casing. During charging, the temperature probe 30 is in close contact with the back of the phone and serves as the temperature sensing front end of the temperature sensor 31. It senses the temperature change of the charging interface in real time and transmits the collected analog signal to the temperature sensor 31. After conditioning and processing the signal, the temperature sensor 31 transmits the temperature data to the control module 32. The control module 32 performs real-time analysis and judgment on the temperature data. When the temperature is detected to be rising continuously and exceeding the preset safety threshold, the control module 32 initiates the charging interruption and heat dissipation program: the electromagnet 38 is energized, generating magnetic force to attract the iron block 39 to move downward, causing the connecting plate 20 to slide downward along the guide rod 37, and the reset spring 310 is stretched accordingly, thereby causing the charger body 2 to move downward as a whole, detaching from the magnetic attachment state with the back of the phone, cutting off the charging circuit, and realizing automatic power-off protection. At the same time, the control module 32 starts the fan 33, and the airflow is guided through the air duct 34 to the air outlet frame 35 and discharged directionally from its outlet, forcibly cooling the charging area. Meanwhile, the control module 32 starts the cooling chip 36, which works with the fan 33 to achieve a composite cooling effect of air cooling and semiconductor cooling, further improving heat dissipation efficiency. After the temperature drops to a safe range, the electromagnet 38 is de-energized, the fan 33 and the cooling chip 36 stop running, the reset spring 310 returns to its original state, pulls the connecting plate 20 to move upward, and causes the charger body 2 to automatically rise and reset, reattaching to the back of the phone and resuming wireless charging, realizing a closed-loop protection mechanism for the entire process from intelligent power-off and active heat dissipation to safe recharging.

Claims

1. A magnetic wireless charger with overheat protection, comprising a housing (1), a charger body (2), a connecting plate (20), guide rods (37), and a reset spring (310), wherein two guide rods (37) are fixedly connected to both sides of the housing (1) and distributed front to back, and a connecting plate (20) is slidably disposed between the two longitudinally aligned guide rods (37), and the charger body (2) is installed between the two connecting plates (20), the charger body (2) passes through the housing (1) and slides with it, and the top surface of the charger body (2) is flush with the placement surface of the housing (1), and a reset spring (310) is sleeved on one end of each guide rod (37), and the two ends of the reset spring (310) are fixedly connected to the corresponding guide rod (37) and the corresponding connecting plate (20), respectively, characterized in that, It also includes a temperature probe (30), a temperature sensor (31), a control module (32), a fan (33), a duct (34), an air outlet frame (35), an electromagnet (38), and an iron block (39). The temperature probe (30) is embedded in the charger body (2), and the thickness of the two is the same. The temperature sensor (31) and the control module (32) are arranged side by side in the lower inner area of ​​the housing (1). The temperature probe (30) and the temperature sensor (31) are electrically connected. The fan (33) is installed in the lower part of the housing (1), and its upper sides are on both sides. Multiple air ducts (34) are fixedly connected at equal intervals. An air outlet frame (35) is fixedly connected between one end of the multiple air ducts (34) that are aligned horizontally. The air outlet frame (35) fits tightly against the inner wall of the casing (1). An electromagnet (38) is fixedly connected to the other end of each guide rod (37). Two iron blocks (39) are symmetrically distributed at the bottom of each connecting plate (20). The number of iron blocks (39) is the same as that of electromagnets (38), and they are distributed vertically. The temperature sensor (31), fan (33) and electromagnet (38) are all electrically connected to the control module (32).

2. The magnetic wireless charger with overheat protection according to claim 1, characterized in that, It also includes a clamping frame (40), a sleeve (41) and a telescopic spring (42). Multiple sleeves (41) distributed along a rectangular direction are fixedly connected to the lower part of the fan (33). A clamping frame (40) is slidably arranged between two sleeves (41) distributed longitudinally. The two clamping frames (40) are arranged opposite to each other. Two telescopic springs (42) are symmetrically distributed on the lower part of each clamping frame (40). The two ends of the telescopic springs (42) are fixedly connected to the corresponding sleeve (41) and the corresponding clamping frame (40) respectively.

3. A magnetic wireless charger with overheat protection according to claim 2, characterized in that, It also includes a support plate (50) and a rotating rod (51). The support plate (50) is installed on the lower part of the fan (33), and multiple rotating rods (51) are rotatably arranged on it in an X-shaped direction. The end of the rotating rod (51) connected to the support plate (50) is provided with a protruding limiting structure, and the other end of the rotating rod (51) not connected to the support plate (50) is provided with an anti-slip pad.

4. A magnetic wireless charger with overheat protection according to claim 3, characterized in that, It also includes a cooling chip (36), with a cooling chip (36) installed inside each air outlet frame (35), and the cooling chip (36) is electrically connected to the control module (32).

5. A magnetic wireless charger with overheat protection according to claim 4, characterized in that, It also includes a protective pad (43), with a protective pad (43) fixed to the clamping surface on the upper part of each clamping frame (40).

6. A magnetic wireless charger with overheat protection according to claim 5, characterized in that, It also includes multiple ventilation openings (6) at several corners of the shell (1).

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