CN219627381U - High-power wireless charger and vehicle-mounted charging structure - Google Patents

Abstract

The utility model relates to a high-power wireless charger and a vehicle-mounted charging structure, wherein the high-power wireless charger includes an upper cover, a base, and a charging assembly, the upper cover and the base are connected to form an accommodating space, and the charging assembly includes a coil assembly and a PCBA main control board, the coil assembly is connected to the PCBA main control board, a heat sink is installed on the base, the heat sink has a first end face and a second end face, and the second end face is pasted with a semiconductor As for the refrigerating sheet, the first end face faces the PCBA main control board and the coil assembly, the side of the base is provided with a first air channel, and the semiconductor refrigerating sheet faces the first air channel. The utility model provides a high-power wireless charger for semiconductor refrigeration chips with good heat dissipation performance and high charging efficiency.

Description

A high-power wireless charger and vehicle charging structure

technical field

The utility model relates to the field of vehicle-mounted wireless chargers, in particular to a high-power wireless charger and a vehicle-mounted charging structure.

Background technique

In recent years, with the development of on-board wireless charging technology, it has become a popular trend for cars to be equipped with wireless charging when leaving the factory. With the update and iteration of mobile phones and the rise of domestic mobile phones, more and more mobile electronic devices have high-power wireless charging functions. However, most of the car wireless chargers configured by car factories can only provide low-power wireless charging functions for electronic devices. The charging time is too long and the user experience is not good.

Due to the serious heating during the charging process and the different over-temperature protection logics of the mobile phones in the traditional vehicle wireless charging, there will be problems during the charging process. ②The surface temperature of electronic equipment is overheated, and the charging time is too long and cannot be shortened. Most of the car wireless chargers configured by car factories can only provide low-power wireless charging functions for electronic equipment. To achieve high-power wireless charging functions, it is necessary First solve the heating problem of the car wireless charger body and electronic equipment.

Utility model content

The purpose of the utility model is to provide a charger with good heat dissipation performance and high charging efficiency, which can provide high-power wireless charging function for electronic equipment.

A high-power wireless charger, comprising an upper cover, a base, and a charging assembly, the upper cover and the base are connected to form an accommodating space, the charging assembly is arranged in the accommodating space and connected to the base, the base A heat sink is installed on it, the heat sink has a first end surface and a second end surface, the second end surface is attached with a semiconductor cooling sheet, the first end surface faces the charging assembly, and the side of the base is provided with a first wind channel, and the semiconductor cooling sheet faces the first air channel.

In the above solution, the radiator is installed obliquely on the base through the vertical plates on both sides, one end of the radiator is in contact with the upper cover, the semiconductor cooling sheet is attached to the second end surface of the radiator, and the wind blowing from the first air duct The temperature of the wind is lowered through the semiconductor cooling sheet, and the cold wind blows to the charging component through the first end of the radiator to cool down the body of the wireless charger. The electronic device is placed on the upper surface of the upper cover for charging, and the first air duct faces the upper cover The wind blows to the electronic equipment through the upper cover to realize the cooling of the electronic equipment.

Further, the semiconductor refrigeration sheet includes a cold end and a hot end, the hot end is attached to the second end surface, and the cold end faces the first air duct.

In the above scheme, when the semiconductor refrigeration chip has a current passing through it, heat transfer will occur at both ends, resulting in a temperature difference to form a cold end and a hot end. When the temperature difference between the cold end and the hot end reaches a certain temperature difference, an equilibrium point will appear. The end absorbs heat and the hot end dissipates heat. When the temperature of the hot end is high, the semiconductor refrigeration sheet will play a role, so that the temperature of the cold end and the hot end will gradually balance. To the PCBA main control board and the coil assembly to realize the heat dissipation of the body of the wireless charger.

Further, the second end surface is coated with heat-conducting silicone grease.

In the above solution, after the second end surface is coated with a layer of thermally conductive silicone grease, then the hot end of the semiconductor cooling chip is attached. The thermally conductive silicone grease is used to have high thermal conductivity and enhance the heat conduction of the semiconductor cooling chip and the radiator. and cooling function.

Further, a fan base is installed on the bottom of the base close to the radiator, a first fan is arranged inside the fan base, and an air outlet communicated with the first air duct is provided on the fan base.

In the above solution, the wind from the fan enters the first air duct through the air outlet, the fan base makes the wind blown by the fan more concentrated, and the radiator plays the role of heat dissipation. When the temperature of the hot end of the semiconductor cooling sheet rises, the semiconductor cooling sheet will When it works, the temperature of the wind blown by the first fan passes through the semiconductor refrigeration sheet and then blows to the accommodating space formed by the upper cover and the base.

Further, a heat dissipation fin is provided on the bottom of the base adjacent to the fan base, and the second fan is installed on the heat dissipation fin.

In the above solution, heat dissipation fins are installed at the bottom of the base to dissipate heat from the wireless charger body. Both the PCBA main control board and the coil assembly will generate heat, and part of the heat will be transferred to the base and discharged from the heat dissipation fins. The second fan is installed on the chip to accelerate heat dissipation. At the same time, the wind blown by the first fan reaches the inside of the wireless charger body through the semiconductor cooling chip, and dissipates heat to the PCBA main control board and coil components. The second fan and cooling fins make the wireless charger body The heat dissipation effect is better.

Further, it also includes an anti-slip mat, the anti-slip mat is installed on the upper cover, and the anti-slip mat is provided with blowing holes.

In the above solution, a non-slip pad is generally added to the wireless charger to prevent the electronic device from sliding during charging and affect the charging effect. There is a gap between the bottom of the non-slip pad and the upper cover for the flow of cold air. Part of the wind from a fan reaches the inside of the wireless charger through the semiconductor cooling chip, and part of it enters the gap between the non-slip pad and the upper cover through the first air channel, and some blowing holes are opened in the middle of the non-slip pad, and the wind flowing in the gap passes through the blowing holes Blow to the electronic equipment to directly dissipate heat and cool down the electronic equipment.

Further, the upper cover is provided with vents and cooling holes, and the vents communicate with the first air duct.

In the above solution, a number of heat dissipation holes are opened on the upper cover, so that the cold air inside the wireless charger body is blown to the electronic equipment through the heat dissipation holes. Vents are opened at the positions of the channels, so that the wind from the first air channel enters the gap between the anti-slip pad and the upper cover through the vents, thereby realizing the heat dissipation of the electronic equipment.

Further, the charging assembly includes a coil assembly and a PCBA main control board, the coil assembly includes a coil and a support frame, the coil is fixed on the support frame, and the support frame is installed on the base.

In the above solution, when the wireless charger is working, the heat of the coil is conducted from the support frame to the base, and the heat is dissipated to the outside, and part of the heat of the base is dissipated through the heat dissipation fins at the bottom. The support frame and the base are made of aluminum, which has good performance. Thermal conductivity, can accelerate the heat dissipation.

Further, the PCBA main control board is connected to the base through several positioning columns.

In the above scheme, the PCBA main control board and the coil assembly are welded together, and the PCBA assembly is placed on the base through the positioning column. When the wireless charger is working, the heat of the PCBA main control board is indirectly conducted to the base and dissipated from the base. The fan is fixed on the base and blows air to the base to accelerate the heat dissipation of the wireless charger.

A vehicle charging structure includes the high-power wireless charger and a vehicle interior, and the high-power wireless charger is fixed on the vehicle interior.

In the above solution, the wireless charger is installed on the interior of the vehicle, and the wireless charger is fixed by screw locking.

A high-power wireless charger and a vehicle-mounted charging structure of the utility model have at least the following beneficial effects:

First, the heat dissipation effect is good. The wind in the first air duct blows through the semiconductor cooling sheet to reduce the temperature of the wind. The cold air blows through the first end face of the radiator to the PCBA main control board and coil components. At the same time, the base is equipped with a cooling fan. The body of the wireless charger cools down, and the electronic device is placed on the upper surface of the upper cover for charging, and the wind in the first air channel towards the upper cover blows to the electronic device through the upper cover to realize the cooling of the electronic device

Second, the charging efficiency is high. The body of the wireless charger is seriously heated, and the wireless charger will automatically limit the power, resulting in a long charging time for the electronic device, and the overheating of the surface temperature of the electronic device will also affect the charging efficiency. The charger body and electronic equipment dissipate heat at the same time, which improves charging efficiency.

Description of drawings

Fig. 1 is an exploded view of a high-power wireless charger according to an embodiment.

Fig. 2 is a schematic diagram of different angles of the structure of the base and the radiator in Fig. 1 .

Fig. 3 is a structural schematic diagram of an anti-slip mat and a vehicle interior trim of an embodiment.

Fig. 4 is a schematic diagram of a first air duct and an upper cover according to an embodiment.

Explanation of reference numerals: 1, upper cover; 300, charging assembly; 310, coil assembly; 320, PCBA main control board; 40, base; 50, radiator; 60, semiconductor cooling sheet; 7, fan base; 8, the second 1st fan; 9. Second fan; 10. Cooling fins; 11. Anti-skid mat; 12. Car interior; 13. Blowing hole; 14. Air outlet; 15. Cooling hole; 16. Air vent; 17. First Air duct; 311, support frame; 312, coil; 41, positioning column; 51, first end face; 52, second end face; 61, hot end; 62, cold end; 100, wireless charger; 200, electronic equipment.

Detailed ways

A high-power wireless charger and a vehicle-mounted charging structure of the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

As shown in Figures 1 to 4, in a preferred embodiment, the high-power wireless charger and the vehicle charging structure of the present utility model include an upper cover 1, a base 40, and a charging assembly 300, and the upper cover 1 and the base 40 are connected to form The accommodating space, the charging assembly 300 is set in the accommodating space and connected to the base 40, the base 40 is equipped with a radiator 50, the radiator 50 has a first end surface 51 and a second end surface 52, and the second end surface 52 is bonded with a semiconductor refrigeration unit. The sheet 60 has the first end surface 51 facing the charging assembly 300 , the side of the base 40 is provided with the first air passage 17 , and the semiconductor cooling sheet 60 faces the first air passage 17 . The radiator 50 is installed obliquely on the base 40 through the vertical plates on both sides. One end of the radiator 50 is in contact with the upper cover 1. The semiconductor cooling fin 60 is attached to the second end surface 52 of the radiator 50. The first air duct 17 The wind blows through the semiconductor cooling sheet 60 to reduce the temperature of the wind, and the cold wind blows to the charging assembly 300 through the first end surface 51 of the radiator 50, thereby cooling the body of the wireless charger 100, and the electronic device 200 is placed on the upper surface of the upper cover 1 During charging, the wind in the first air channel 17 towards the upper cover 1 blows to the electronic device 200 through the upper cover 1 to realize the cooling of the electronic device 200 .

As shown in FIG. 1 and FIG. 2 , in some embodiments, the semiconductor cooling chip 60 includes a cold end 62 and a hot end 61 , the hot end 61 is attached to the second end surface 52 , and the cold end 62 faces the first air duct 17 . When the semiconductor refrigeration sheet 60 has a current passing through it, heat transfer will occur at both ends, thereby generating a temperature difference to form a cold end 62 and a hot end 61. When the temperature difference between the cold end 62 and the hot end 61 reaches a certain temperature difference, an equilibrium point will appear, and the cold end 62 and the hot end 61 will reach a certain temperature difference. The end 62 absorbs heat, and the hot end 61 dissipates heat. When the temperature of the hot end 61 is high, the semiconductor refrigeration sheet 60 plays a role, so that the temperatures of the cold end 62 and the hot end 61 are gradually balanced. When the wind of the first air duct 17 passes through the cold end 62 , the temperature of the wind will decrease, and the wind will blow to the PCBA main control board 320 and the coil assembly 310 so as to realize the heat dissipation of the body of the wireless charger 100. The semiconductor cooling chip 60 has no refrigerant pollution, high reliability and is not limited by space. , suitable for the wireless charger 100 with small space.

As shown in FIG. 1 and FIG. 2 , in some embodiments, the second end surface 52 is coated with thermal conductive silicone grease. After the second end surface 52 is coated with a layer of heat-conducting silicone grease, then attach the hot end 61 of the semiconductor cooling chip 60. The heat-conducting silicone grease is used to have high thermal conductivity, and the heat inside the wireless charger 100 is dissipated through the radiator 50. , heat dissipation is carried out through the semiconductor cooling sheet 60 , and the thermally conductive silicone grease enhances the heat conduction and heat dissipation functions of the semiconductor cooling sheet 60 and the radiator 50 .

As shown in Figure 1, in some embodiments, a fan base 7 is installed on the bottom of the base 40 close to the side of the radiator 50, the fan base 7 is provided with a first fan 8, and the fan base 7 is provided with the first The air outlet 14 that the air duct 17 communicates with. The wind of the fan enters the first air channel 17 through the air outlet 14, the fan base 7 makes the wind blown by the fan more concentrated, the heat sink 50 plays the role of heat dissipation, the temperature of the semiconductor refrigeration sheet 60 hot end 61 increases, and the semiconductor refrigeration sheet 60 When the wind blown by the first fan 8 passes through the cold end 62 of the semiconductor cooling chip 60, the temperature of the cold end 62 decreases, and the temperature of the hot end 61 decreases accordingly, and the lowered wind blows toward the accommodating space.

As shown in FIG. 2 , in some embodiments, a cooling fin 10 is provided on the bottom of the base 40 adjacent to the fan base 7 , and the second fan 9 is installed on the cooling fin 10 . Heat dissipation fins 10 are installed on the bottom of the base 40 to dissipate heat from the body of the wireless charger 100. Both the PCBA main control board 320 and the coil assembly 310 will generate heat. The second fan 9 is installed on the heat dissipation fins 10 to accelerate heat dissipation. At the same time, the wind blown by the first fan 8 reaches the inside of the body of the wireless charger 100 through the semiconductor cooling sheet 60 to dissipate heat from the PCBA main control board 320 and the coil assembly 310. The fan 9 and the heat dissipation fins 10 make the heat dissipation effect of the wireless charger 100 body better, thereby realizing the high-power wireless charging function.

As shown in Figures 3 and 4, in some embodiments, the high-power wireless charger with a semiconductor cooling chip also includes an anti-slip pad 11, which is installed on the upper cover 1, and the anti-slip pad 11 is provided with a blower hole 13 . A non-slip pad 11 is generally added to the wireless charger 100 to prevent the electronic device 200 from sliding during charging and affect the charging effect. There is a gap between the bottom of the non-slip pad and the upper cover for the flow of cold air. The first fan Part of the wind from 8 reaches the inside of the wireless charger 100 through the semiconductor cooling plate 60, and part of it reaches the bottom of the anti-slip mat 11 through the first air duct 17, and some blowing holes 13 are opened in the middle of the anti-slip mat 11, and the cold air at the bottom of the anti-slip mat 11 passes through the blowing holes 13 is blown towards the electronic device 200 to prevent slipping and at the same time dissipate heat from the electronic device 200 to prevent the surface temperature of the electronic device 200 from being too high, thereby improving charging efficiency.

As shown in FIG. 4 , in some embodiments, the upper cover 1 is provided with a vent 16 and a cooling hole 15 , and the vent 16 communicates with the first air channel 17 . A number of heat dissipation holes 15 are opened on the upper cover 1, so that the cold air inside the wireless charger 100 body is blown to the electronic device 200 through the heat dissipation holes 15. The position of the first air passage 17 opens the air vent 16, so that the wind of the first air passage 17 reaches the gap between the bottom of the anti-slip pad and the upper cover through the air vent 16, thereby realizing the heat dissipation of the electronic device 200, and the upper cover 1 is made of plastic The material has a low thermal conductivity, which can isolate the heat dissipated by the coil assembly 310 .

As shown in Figure 1, in some embodiments, the charging assembly 300 includes a coil assembly 310 and a PCBA main control board 320, the coil assembly 310 includes a coil 312 and a support frame 311, the coil 312 is fixed on the support frame 311, and the support frame 311 is installed on the base 40. When the wireless charger 100 is working, the heat of the coil 312 is conducted from the support frame 311 to the base 40, and the heat is dissipated to the outside. A part of the heat of the base 40 is dissipated through the heat dissipation fins 10 at the bottom. The support frame 311 and the base 40 are made of aluminum. It has good thermal conductivity and can accelerate the dissipation of heat.

As shown in FIG. 1 , in some embodiments, the PCBA main control board 320 is connected to the base 40 through several positioning posts 41 . The PCBA main control board 320 and the coil assembly 310 are welded together, and the PCBA assembly is placed on the base 40 through the positioning column 41. When the wireless charger 100 is working, the heat of the PCBA main control board 320 is indirectly conducted to the base 40 and dissipated by the base 40 , the second fan 9 is fixed on the base 40 to blow air to the base 40 to accelerate the dissipation of heat from the wireless charger 100 .

As shown in FIG. 3 , in a preferred embodiment, a vehicle charging structure includes the wireless charger 100 and the vehicle interior 12 , and the wireless charger 100 is fixed on the vehicle interior 12 . The wireless charger 100 is installed on the vehicle interior 12, and the vehicle interior 12 is installed in the vehicle through screw locking, thereby realizing the fixing of the wireless charger. It is convenient for the wireless charger 100 to charge the electronic device 200 more stably.

The working principle and process of a high-power wireless charger and vehicle-mounted charging structure of the utility model, when the wireless charger 100 is working, the heat generated by the coil assembly 310 and the PCBA main control board 320 is conducted to the base 40, and the heat passes through the radiator 50 and the cooling fins Sheet 10 distributes, and the temperature of the hot end 61 of the semi-conductor cooling sheet 60 bonded to the radiator 50 increases, and the semi-semiconductor cooling sheet 60 plays a role. When the wind blown by the first fan 8 passes through the cold end 62 of the semiconductor cooling sheet 60, the cooling The temperature of the end 62 decreases, and the temperature of the hot end 61 also decreases accordingly. The wind after reducing the temperature blows to the accommodating space, and the second fan 9 is installed at the position of the cooling fin 10 to accelerate the heat dissipation of the base 40. On the upper cover 1 There are a number of heat dissipation holes 15 on the top, so that the cold air inside the body of the wireless charger 100 blows to the electronic device 200 through the heat dissipation holes 15. Since the upper cover 1 needs to be equipped with an anti-skid pad 11, the upper cover 1 is close to the first air duct. The air vent 16 is opened at the position of 17, so that the wind of the first air channel 17 reaches the bottom of the anti-slip mat 11 through the vent 16, realizing heat dissipation of the electronic device 200, and at the same time, the body of the wireless charger 100 and the electronic device 200 can dissipate heat. Reduce power limitations and improve charging efficiency.

In describing the present invention, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top ", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying Any device or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

Although the description of the utility model is performed in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above contents. Accordingly, all such alternatives, modifications and changes are intended to be included within the spirit and scope of the appended claims.

Claims (7)

1. A high-power wireless charger, comprising an upper cover, a base, and a charging assembly, the upper cover and the base are connected to form an accommodating space, the charging assembly is arranged in the accommodating space and connected to the base, its It is characterized in that a radiator is installed on the base, the radiator has a first end surface and a second end surface, the second end surface is pasted with a semiconductor cooling chip, the first end surface faces the charging assembly, and the side of the base The side is provided with a first air channel, and the semiconductor refrigeration sheet faces the first air channel, and a fan base is installed on the side of the bottom of the base close to the radiator, and a first fan is arranged in the fan base, and the fan base An air outlet communicated with the first air channel is provided, an air vent and a cooling hole are provided on the upper cover, the air vent communicates with the first air channel, and an anti-slip pad is provided on the upper cover, The anti-skid pad is provided with blowing holes. 2. The high-power wireless charger according to claim 1, wherein the semiconductor cooling sheet includes a cold end and a hot end, the hot end is attached to the second end surface, and the cold end faces the first end surface. air duct. 3. The high-power wireless charger according to claim 2, wherein the second end surface is coated with heat-conducting silicone grease. 4. The high-power wireless charger according to claim 1, wherein a cooling fin is provided at the bottom of the base, and a second fan is installed on the cooling fin. 5. The high-power wireless charger according to claim 1, wherein the charging assembly includes a coil assembly and a PCBA main control board, the coil assembly includes a coil and a support frame, and the coil is fixed on the support frame , the support frame is installed on the base. 6. The high-power wireless charger according to claim 5, wherein the PCBA main control board is connected to the base through several positioning posts. 7. A vehicle charging structure, characterized in that it comprises a high-power wireless charger as claimed in any one of claims 1 to 6 and a vehicle interior, the high-power wireless charger is fixed on the vehicle on the interior.