A heat-dissipating durable vehicle-mounted millimeter wave radar

Abstract

The utility model discloses a kind of vehicle-mounted millimeter wave radars of heat dissipation durable, including base, the upper surface of the base is connected with the shell, the lower end of the shell side wall is equipped with multiple first fixed plate, the side of the base is equipped with corresponding second fixed plate, circuit board is installed on the base, mounting groove is opened in the upper surface of the shell, heat dissipation assembly is installed in the mounting groove.The utility model solves the problem that the existing vehicle-mounted millimeter wave radar can meet the heat dissipation demand generally by directly installing the heat plate to the side close to the circuit board, which needs spot welding process to connect, resulting in high installation cost and installation difficulty, and low yield.

Description

Technical Field

[0001] This utility model relates to the field of vehicle radar technology, and in particular to a heat-dissipating and durable vehicle millimeter-wave radar. Background Technology

[0002] Vehicle-mounted millimeter-wave radar is an electronic device installed on a vehicle that uses millimeter waves (commonly in the 24GHz and 77GHz bands) to detect surrounding targets. Its core function is to calculate the distance, speed, and angle of the target by transmitting and receiving millimeter-wave signals, thereby achieving the function of "perceiving the surrounding environment". It also has the advantage of being able to withstand rain, snow, fog, and strong light in all weather conditions.

[0003] The high-power components inside automotive millimeter-wave radar continuously generate heat during operation. If the heat cannot be dissipated in time, it will directly lead to radar performance degradation, shortened lifespan, and even chip burnout, failing to meet the reliability requirements of automotive scenarios.

[0004] To meet heat dissipation requirements, existing automotive millimeter-wave radars typically mount heat spreaders directly onto the side of the circuit board. This method requires spot welding for connection, resulting in high installation costs and difficulty, and a low yield rate. Utility Model Content

[0005] The purpose of this invention is to overcome the existing defects and provide a heat-dissipating and durable vehicle-mounted millimeter-wave radar, which can dissipate heat from its internal electrical components through modular heat dissipation components.

[0006] The technical solution to achieve the above objective is: a heat-dissipating and durable vehicle-mounted millimeter-wave radar, including a base, the upper surface of which is connected to the outer shell, the lower end of the side wall of the outer shell is provided with a plurality of first fixing plates, the side of the base is provided with a corresponding second fixing plate, a circuit board is mounted on the base, and a mounting groove is opened on the upper surface of the outer shell, in which a heat dissipation component is installed.

[0007] Preferably, the heat dissipation assembly includes a heat spreader, a heat sink fin holder, and two heat conduction plates. The mounting slot is also mirror-imaged with two strip-shaped limiting holes. The heat spreader is placed in the mounting slot. The heat sink fin holder is connected to the upper surface of the heat spreader. The heat sink fin holder is detachably connected to the side wall of the housing by multiple screws. The lower surface of the heat spreader is connected to two heat conduction plates. Each heat conduction plate passes through the corresponding strip-shaped limiting hole, and the lower end of each heat conduction plate is in close contact with the circuit board.

[0008] Preferably, a thermally conductive silicone grease layer is applied between each of the heat-conducting plates and the heat-spreading plate, and a thermally conductive pad is provided on the lower surface of each of the heat-conducting plates, with each thermally conductive pad being in close contact with the circuit board.

[0009] Preferably, the heat spreader has a first through hole in the middle part, and the heat dissipation fin bracket has a second through hole in the middle part.

[0010] Preferably, the areas of the first through hole and the second through hole completely cover the detection surface on the circuit board.

[0011] Preferably, each of the first fixing plates and each corresponding second fixing plate are in close contact, and each of the first fixing plates and each of the second fixing plates is provided with mounting holes.

[0012] Preferably, the circuit board is equipped with a radio frequency front-end, signal processing, power management, and structural auxiliary modules.

[0013] The beneficial effects of this utility model are as follows: an installation groove is provided on the upper surface of the outer shell, and a heat dissipation plate is placed in the installation groove. A heat dissipation fin bracket is connected to the upper surface of the heat dissipation plate. The heat dissipation fin bracket is detachably connected to the side wall of the outer shell by multiple screws. Two heat conduction plates are connected to the lower surface of the heat dissipation plate. Each heat conduction plate passes through a corresponding strip-shaped limiting hole. The lower end of each heat conduction plate is in close contact with the circuit board. The heat of the heat-generating components on the circuit board is transferred to the two heat conduction plates through the heat conduction pad, and then transferred to the heat dissipation plate by the two heat conduction plates. Finally, the heat dissipation fin bracket effectively dissipates heat from the heat dissipation plate. It is stable and durable. Through this external contact heat transfer and heat dissipation method, modular installation can reduce installation costs and installation difficulty, and the yield rate is high. The heat spreader has a first through hole in the middle part and a second through hole in the middle part of the heat sink fin bracket. The area of ​​the first and second through holes completely covers the detection surface on the circuit board, which can prevent the metal inside the heat sink assembly from affecting the radar's shielding performance. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention; Figure 2 This is an exploded view of this utility model; Figure 3 yes Figure 2 Top view.

[0015] In the diagram: 1. Outer shell; 2. Base; 3. First fixing plate; 4. Second fixing plate; 5. Circuit board; 6. Mounting slot; 7. Heat spreader; 8. Heat dissipation fin bracket; 9. Heat conduction plate; 10. Strip-shaped limiting hole; 11. Thermal pad; 12. First through hole; 13. Second through hole. Detailed Implementation

[0016] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] like Figure 1-3 As shown, a heat-dissipating and durable vehicle-mounted millimeter-wave radar includes a base 2, with a housing 1 connected to the upper surface of the base 2. Multiple first fixing plates 3 are provided at the lower end of the side wall of the housing 1, and corresponding second fixing plates 4 are provided on the side of the base 2. Each first fixing plate 3 and each corresponding second fixing plate 4 are in close contact, and each first fixing plate 3 and each second fixing plate 4 has mounting holes. A circuit board 5 is mounted on the base 2, and the circuit board 5 is equipped with an RF front-end, signal processing, power management, and structural auxiliary modules. A mounting groove 6 is provided on the upper surface of the housing 1, which can limit the position of a heat dissipation plate 7 for easy installation. A heat dissipation component is installed inside the mounting groove 6.

[0019] Specifically, the heat dissipation assembly includes a heat spreader 7, a heat sink fin holder 8, and two heat conduction plates 9. Two strip-shaped limiting holes 10 are also mirrored on the mounting slot 6. The heat spreader 7 is placed inside the mounting slot 6. The heat sink fin holder 8 is connected to the upper surface of the heat spreader 7. The heat sink fin holder 8 is detachably connected to the side wall of the outer casing 1 by multiple screws. Two heat conduction plates 9 are connected to the lower surface of the heat spreader 7. Each heat conduction plate 9 passes through a corresponding strip-shaped limiting hole 10, and the lower end of each heat conduction plate 9 is in close contact with the circuit board 5. The heat from the heat-generating components on the circuit board 5 is transferred to the two heat conduction plates 9 through the heat conduction pad, and then transferred to the heat spreader 7 by the two heat conduction plates 9. Finally, the heat sink fin holder 8 effectively dissipates heat from the heat spreader 7, ensuring stability and durability. This external contact heat transfer method allows for modular installation, reducing installation costs and difficulty, and resulting in a high yield rate.

[0020] Specifically, a thermal grease layer is applied between each heat-conducting plate 9 and the heat-spreading plate 7, and a thermal pad 11 is provided on the lower surface of each heat-conducting plate 9. Each thermal pad 11 is in close contact with the circuit board 5. The thermal grease layer and each thermal pad 11 can effectively improve the heat conduction efficiency.

[0021] Specifically, the middle part of the heat dissipation plate 7 has a first through hole 12, and the middle part of the heat dissipation fin bracket 8 has a second through hole 13. The area of ​​the first through hole 12 and the second through hole 13 completely covers the detection surface on the circuit board 5, which can prevent the metal in the heat dissipation fin bracket 8 and the heat dissipation plate 7 from affecting the shielding performance of the radar.

[0022] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A heat-dissipating and durable vehicle-mounted millimeter-wave radar, characterized in that, Includes a base (2), the upper surface of which is connected to a shell (1), the lower end of the side wall of the shell (1) is provided with a plurality of first fixing plates (3), the side of the base (2) is provided with a corresponding second fixing plate (4), a circuit board (5) is installed on the base (2), and an installation groove (6) is opened on the upper surface of the shell (1), and a heat dissipation component is installed in the installation groove (6).

2. The heat-dissipating and durable vehicle-mounted millimeter-wave radar according to claim 1, characterized in that, The heat dissipation assembly includes a heat spreader (7), a heat dissipation fin holder (8), and two heat conduction plates (9). Two strip-shaped limiting holes (10) are also mirrored on the mounting groove (6). The heat spreader (7) is placed in the mounting groove (6). The heat dissipation fin holder (8) is connected to the upper surface of the heat spreader (7). The heat dissipation fin holder (8) is detachably connected to the side wall of the outer shell (1) by multiple screws. Two heat conduction plates (9) are connected to the lower surface of the heat spreader (7). Each heat conduction plate (9) passes through the corresponding strip-shaped limiting hole (10). The lower end of each heat conduction plate (9) is in close contact with the circuit board (5).

3. The heat-dissipating and durable vehicle-mounted millimeter-wave radar according to claim 2, characterized in that, A thermal grease layer is applied between each of the heat-conducting plates (9) and the heat-spreading plate (7). A thermal pad (11) is provided on the lower surface of each of the heat-conducting plates (9). Each of the thermal pads (11) is in close contact with the circuit board (5).

4. The heat-dissipating and durable vehicle-mounted millimeter-wave radar according to claim 2, characterized in that, The heat spreader (7) has a first through hole (12) in the middle part, and the heat dissipation fin bracket (8) has a second through hole (13) in the middle part.

5. The heat-dissipating and durable vehicle-mounted millimeter-wave radar according to claim 4, characterized in that, The area of ​​the first through hole (12) and the second through hole (13) completely covers the detection surface on the circuit board (5).

6. The heat-dissipating and durable vehicle-mounted millimeter-wave radar according to claim 1, characterized in that, Each of the first fixing plates (3) and each of the corresponding second fixing plates (4) are in close contact with each other, and each of the first fixing plates (3) and each of the second fixing plates (4) is provided with mounting holes.

7. The heat-dissipating and durable vehicle-mounted millimeter-wave radar according to claim 1, characterized in that, The circuit board (5) is equipped with a radio frequency front-end, signal processing, power management and structural auxiliary modules.

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