Vehicle-mounted wireless charger with semiconductor refrigeration and heat dissipation structure

Abstract

A vehicle-mounted wireless charger with a semiconductor refrigeration and heat dissipation structure is characterized in that a first air outlet is formed in a shielding net of a charger main body, and air is directly blown to charging equipment for cooling through the first air outlet; a first fan and an inner cooling fin are arranged on one side, far away from the shielding fin, of the rear shell, an inner air inlet is formed in a position close to the inner cooling fin, a second air outlet is formed in one end far away from the inner air inlet, and air entering the rear shell is exhausted through the second air outlet; a fan shell is installed on the rear shell, the first fan, the inner cooling fins and the inner air inlet are covered with the fan shell, a heat insulation plate is arranged on the top face, a semiconductor refrigeration module is arranged on the heat insulation plate, the cold face of the semiconductor refrigeration module makes contact with the inner cooling fins, and the hot face of the semiconductor refrigeration module makes contact with the outer cooling fins. A second fan is mounted on one side of the outer cooling fin; the second fan is used for blowing air to the outer cooling fins to cool the semiconductor refrigeration module. When the charger is cooled, air blown out is cold air, so that the heat dissipation effect is fully ensured, and the problem of high heat of a high-power charger is thoroughly solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle chargers, and in particular to a vehicle wireless charger with a semiconductor refrigeration and heat dissipation structure. Background Art

[0002] At present, more and more cars on the market are equipped with on-board wireless chargers for charging mobile phones, tablets, etc. There is a serious problem with on-board chargers, that is, serious heat generation during charging. Although the design charging power of mainstream products can reach 15W, the mobile phone and charger generate serious heat during charging. The temperature rise causes the charging power to decrease, especially for high-power wireless chargers such as 50W and 80W. The high heat problem is serious. In view of this problem, the applicant has designed a car wireless charger with a heat dissipation structure (application numbers: 2024110131737, 2024217878991). The charger is designed with two ventilation ducts to cool the charging device and the charger respectively, so as to reduce the internal and external temperature of the wireless charger and improve the heating and heat dissipation problems of the charger, but the heat dissipation effect of natural air cooling needs to be improved. Summary of the invention

[0003] In view of the above technical problems and defects, the purpose of the present invention is to provide a vehicle-mounted wireless charger with a semiconductor refrigeration and heat dissipation structure, which can not only cool the charging device and the charger at the same time, but also blow out cold air during cooling, which fully ensures the heat dissipation effect, completely solves the high heat problem existing in high-power chargers, and ensures the charging effect and charging safety.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is:

[0005] A vehicle-mounted wireless charger with a semiconductor refrigeration and heat dissipation structure includes a charger body, and the improvement made is that the shielding slat of the charger body is installed on the rear shell, and the shielding slat is provided with a first air outlet, and air is blown directly to the charging device for cooling through the first air outlet; a first fan is provided on the side of the rear shell away from the shielding slat, an inner heat sink is installed at a position close to the first fan air outlet, an inner air inlet is opened at a position close to the inner heat sink, and a second air outlet is provided at an end away from the inner air inlet, and the air entering the rear shell is discharged through the second air outlet; a fan housing is also installed on the rear shell, and the fan housing connects the first fan, the inner heat sink and the second air inlet. The fan housing is provided with a fan air inlet notch at a position opposite to the first fan, and an avoidance notch at a position opposite to the inner heat sink; a heat insulation board is provided on the top surface of the fan housing at a position opposite to the avoidance notch; a mounting groove is processed on the heat insulation board, and a semiconductor refrigeration module is arranged in the mounting groove; the cold surface of the semiconductor refrigeration module contacts the inner heat sink, and the hot surface of the semiconductor refrigeration module contacts the outer heat sink; the outer heat sink is fixed on the heat insulation board and the fan housing, and a second fan is installed on one side of the outer heat sink; the second fan is used to blow air to the outer heat sink to cool the semiconductor refrigeration module.

[0006] As a preferred embodiment of the present invention, the charger body includes a shielding film, a coil, a coil bracket, a cooling plate, a thermally conductive adhesive, a PCBA board, and a back shell; wherein the coil is pasted on the coil bracket; the cooling plate is arranged between the coil bracket and the thermally conductive adhesive; the thermally conductive adhesive is arranged between the cooling plate and the PCBA board; the PCBA board is fixed on the back shell; the cooling plate is composed of a main board and a plurality of cooling fins arranged at intervals on the main board; the coil bracket is provided with an air outlet channel near the air inlet in the back shell, and the cold air entering the air inlet in the back shell is diverted into two cold air streams under the action of the cooling plate and the coil bracket, one of which passes through the channel between the cooling fins to cool the cooling plate and is discharged from the second air outlet, and the PCBA board and the coil are cooled by the cooling plate, and the other cold air passes through the air outlet channel of the coil bracket and is discharged from the first air outlet, which is used to cool the charging device.

[0007] As a preferred embodiment of the present invention, the charger body further includes an NFC antenna, and the NFC antenna is integrated on the shielding film.

[0008] As a preferred embodiment of the present invention, the shielding fin is fixed to the rear shell by screws; the first fan is fixed to the rear shell by screws; the inner heat sink, the heat insulation plate and the fan casing are connected and fixed by screws; the fan casing and the rear shell are fixedly connected by screws; the outer heat sink is fixed to the fan casing by screws, and the second fan is fixed to the outer heat sink by screws.

[0009] As a preferred embodiment of the present invention, the first air outlet, the inner air inlet of the rear shell and the air outlet channel of the coil bracket are arranged on the same side and opposite to each other, and the width of the inner air inlet is greater than the width of the air outlet channel.

[0010] Compared with the prior art, the advantages and beneficial effects of the present invention are:

[0011] (1) The in-vehicle wireless charger provided by the present invention can divert the wind coming in from the air inlet of the rear shell into two winds by improving the rear shell, coil bracket, cooling plate, etc., and the two winds are used to cool the charging device and the charger respectively; at the same time, a second fan is added to the rear shell, and the semiconductor refrigeration module is cooled by the second fan to reduce the internal and external temperatures of the wireless charger, effectively improving the heating and heat dissipation problems of the charger, and improving the charging power of the in-vehicle wireless charger, thereby avoiding the problem that the charging power of the in-vehicle wireless charger is too low in summer and is far from reaching the designed charging power.

[0012] (2) When the in-vehicle wireless charger provided by the present invention cools down the internal heat dissipation components and charging equipment, the wind blown out is cold wind, which can fully ensure the heat dissipation effect, completely solve the high heat problem existing in high-power chargers, and ensure the charging effect and charging safety.

[0013] (3) The cooling plate inside the vehicle-mounted wireless charger of the present invention is composed of a main board and a plurality of cooling fins spaced apart on the main board. The air entering from the air inlet of the rear shell passes through the channel between the two cooling fins and is discharged from the second air outlet. The coil that generates heat during the operation of the charger is directly in contact with the cooling plate, and the PCBA board is in contact with the cooling plate through thermal conductive adhesive. This structural design can quickly cool down the components inside the charger, and the cooling effect is significant.

[0014] (4) The vehicle-mounted wireless charger provided by the present invention has a simple overall structure and a compact layout, which improves the performance of the wireless charger and is conducive to ensuring and extending the service life of the wireless charger. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more apparent and easy to understand. In the accompanying drawings:

[0016] Figure 1 The overall structure of the vehicle wireless charger provided by the present invention is shown in FIG. Figure 1 ;

[0017] Figure 2 The overall structure of the vehicle wireless charger provided by the present invention is shown in FIG. Figure 2 ;

[0018] Figure 3 The partial structure diagram of the vehicle wireless charger provided by the present invention is shown in FIG. Figure 1 ;

[0019] Figure 4 The partial structure diagram of the vehicle wireless charger provided by the present invention is shown in FIG. Figure 2 ;

[0020] Figure 5 It is an exploded schematic diagram of the vehicle-mounted wireless charger provided by the present invention;

[0021] Figure 6 The plane of the vehicle wireless charger provided by the present invention Figure 1 ;

[0022] Figure 7 The plane of the vehicle wireless charger provided by the present invention Figure 2 ;

[0023] Figure 8 yes Figure 6 Cross-section of the middle AA;

[0024] Fig. 9 yes Figure 7 Cross-section of the middle BB;

[0025] Fig.10 yes Figure 7 Cross-section of the middle CC;

[0026] Fig.11 yes Figure 7 Cross-section of the middle DD;

[0027] Fig.12 yes Figure 5 Enlarged view of the cooling plate and coil support;

[0028] Fig.13 is a schematic diagram of an NFC antenna.

[0029] The reference numerals therein include: charger body 1, NFC antenna 2, first fan 3, inner heat sink 4, fan housing 5, heat insulation board 6, semiconductor refrigeration module 7, outer heat sink 8, second fan 9, shielding slit 11, rear shell 12, coil 13, coil bracket 14, cooling plate 15, thermal conductive adhesive 16, PCBA board 17, first air outlet 111, inner air inlet 121, second air outlet 122, fan air inlet notch 501, mounting slot 601, air outlet channel 141, mainboard 151, cooling fin 152. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions of various embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. It should be pointed out that all the drawings are exemplary representations. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The present invention is further described in detail below through specific implementation examples and in conjunction with the drawings.

[0033] like Figures 1 to 13As shown, the present embodiment provides a vehicle-mounted wireless charger 1 with a semiconductor refrigeration and heat dissipation structure, including a charger body 1, and the improvement made is that the shielding slit 11 of the charger body 1 is installed on the rear shell 12, and the shielding slit 11 is provided with a first air outlet 111, and the first air outlet 111 is used to blow air directly to the charging device for cooling; a first fan 3 is provided on the side of the rear shell 12 away from the shielding slit 11, an inner heat sink 4 is installed at a position close to the first fan air outlet, an inner air inlet 121 is opened at a position close to the inner heat sink 4, and a second air outlet 122 is provided at one end away from the inner air inlet 121, and the air entering the rear shell 12 is discharged through the second air outlet 122; a fan housing 5 is also installed on the rear shell 12, and the fan housing 5 The first fan 3, the inner heat sink 4 and the inner air inlet 121 are covered inside, the fan housing 5 is provided with a fan air inlet notch 501 at a position opposite to the first fan 3, and a avoidance notch (not shown) at a position opposite to the inner heat sink 4, and a heat insulation board 6 is provided on the top surface of the fan housing 5 at a position opposite to the avoidance notch, the heat insulation board 6 is processed with a mounting groove 601, a semiconductor refrigeration module 7 is arranged in the mounting groove 601, the cold surface of the semiconductor refrigeration module 7 contacts the inner heat sink 4, and the hot surface of the semiconductor refrigeration module 7 contacts the outer heat sink 8, the outer heat sink 8 is fixed on the heat insulation board 6 and the fan housing 5, and a second fan 9 is installed on one side of the outer heat sink 8, and the second fan 9 is used to blow air to the outer heat sink 8 to cool the semiconductor refrigeration module 7.

[0034] Further, continue as Figures 1 to 13 As shown, in this embodiment, the charger body includes a shielding slit 11, a coil 13, a coil bracket 14, a cooling plate 15, a thermally conductive adhesive 16, a PCBA board 17, and a rear shell 12; wherein the coil 13 is attached to the coil bracket 14, and the coil 13 is used to charge the charging device, and the charging device includes a mobile phone and a tablet; the cooling plate 15 is arranged between the coil bracket 14 and the thermally conductive adhesive 16; the thermally conductive adhesive 16 is arranged between the cooling plate 15 and the PCBA board 17; the PCBA board 17 is fixed on the rear shell 12; the cooling plate 15 is composed of a main board 151 and a spacer arranged on the The mainboard is composed of multiple cooling fins 152; the coil bracket 14 is provided with an air outlet channel 141 near the air inlet 121 in the rear shell; the cold air coming in from the air inlet 121 in the rear shell is diverted into two cold air streams under the action of the cooling plate 15 and the coil bracket 14, one of which passes through the channel between the cooling fins 15 and the cooling fins 15 to cool the cooling plate and then is discharged from the second air outlet 122, and the PCBA board 17 and the coil 13 are cooled by the cooling plate 15, and the other cold air passes through the air outlet channel 141 of the coil bracket 14 and is discharged from the first air outlet 111 to cool the charging device.

[0035] Furthermore, in this embodiment, the charger body also includes an NFC antenna 2, which is integrated on the shielding slit 11. The function of the NFC antenna 2 is to control electromagnetic interference and communication transmission.

[0036] Further, if Figures 1 to 4 As shown, in this embodiment, the shielding slat 11 is fixed to the rear shell 12 by screws, and the NFC antenna 2, the coil 13, the coil bracket 14, the cooling plate 15, the thermal conductive adhesive 16, and the PCBA board 17 are arranged between the shielding slat 11 and the rear shell 12; the first fan 3 is fixed to the rear shell 12 by screws; the inner heat sink 4, the heat insulation plate 6 and the fan housing 5 are connected and fixed by screws; the fan housing 5 is fixedly connected to the rear shell 12 by screws; the outer heat sink 8 is fixed to the fan housing 5 by screws, and the second fan 9 is fixed to the outer heat sink 8 by screws.

[0037] Further, if Figures 8 to 11 As shown, in this embodiment, the first air outlet 111 , the inner air inlet 121 of the rear shell and the air outlet channel 141 of the coil bracket are arranged on the same side and opposite to each other, and the width of the inner air inlet 121 is greater than the width of the air outlet channel 141 .

[0038] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vehicle-mounted wireless charger with a semiconductor refrigeration and heat dissipation structure, comprising a charger body, characterized in that: The shielding slat of the charger body is installed on the rear shell, and a first air outlet is provided on the shielding slat, through which air is blown directly to the charging device for cooling; a first fan is provided on the side of the rear shell away from the shielding slat, an inner heat sink is installed near the first fan air outlet, an inner air inlet is opened near the inner heat sink, and a second air outlet is provided at the end away from the inner air inlet, through which air entering the rear shell is discharged; a fan housing is also installed on the rear shell, and the fan housing contains the first fan, the inner heat sink and the inner air inlet cover, and the fan housing is in contact with the A fan air inlet notch is provided at a position opposite to the first fan, an avoidance notch is provided at a position opposite to the inner heat sink, and a heat insulation plate is provided on the top surface of the fan housing at a position opposite to the avoidance notch; a mounting groove is processed on the heat insulation plate, and a semiconductor refrigeration module is provided in the mounting groove; the cold surface of the semiconductor refrigeration module contacts the inner heat sink, and the hot surface of the semiconductor refrigeration module contacts the outer heat sink; the outer heat sink is fixed on the heat insulation plate and the fan housing, and a second fan is installed on one side of the outer heat sink; the second fan is used to blow air to the outer heat sink to cool the semiconductor refrigeration module.

2. The vehicle-mounted wireless charger with semiconductor refrigeration and heat dissipation structure according to claim 1, characterized in that: The charger body includes a shielding layer, a coil, a coil bracket, a cooling plate, a thermally conductive adhesive, a PCBA board, and a back shell; wherein the coil is pasted on the coil bracket; the cooling plate is arranged between the coil bracket and the thermally conductive adhesive; the thermally conductive adhesive is arranged between the cooling plate and the PCBA board; the PCBA board is fixed on the back shell; the cooling plate is composed of a main board and a plurality of cooling fins arranged on the main board at intervals; the coil bracket is provided with an air outlet channel near the air inlet in the back shell, and the cold air entering the air inlet in the back shell is diverted into two cold air streams under the action of the cooling plate and the coil bracket, one of which passes through the channel between the cooling fins to cool the cooling plate and is discharged from the second air outlet, and the PCBA board and the coil are cooled by the cooling plate, and the other cold air passes through the air outlet channel of the coil bracket and is discharged from the first air outlet, which is used to cool the charging device.

3. A vehicle-mounted wireless charger with a semiconductor refrigeration and heat dissipation structure according to claim 1 or 2, characterized in that: The charger body further includes an NFC antenna, which is integrated on the shielding layer.

4. The vehicle-mounted wireless charger with semiconductor refrigeration and heat dissipation structure according to claim 1 or 2, characterized in that: The shielding fan is fixed to the rear shell by screws; the first fan is fixed to the rear shell by screws; the inner heat sink, the heat insulation plate and the fan casing are connected and fixed by screws; the fan casing and the rear shell are fixedly connected by screws; the outer heat sink is fixed to the fan casing by screws, and the second fan is fixed to the outer heat sink by screws.

5. The vehicle-mounted wireless charger with semiconductor refrigeration and heat dissipation structure according to claim 1 or 2, characterized in that: The first air outlet, the inner air inlet of the rear shell and the air outlet channel of the coil support are arranged on the same side and opposite to each other, and the width of the inner air inlet is greater than the width of the air outlet channel.

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