An unmanned vehicle drive-by-wire chassis high-efficiency heat dissipation structure

Abstract

The utility model discloses an unmanned vehicle line control chassis high -efficient heat dissipation structure relates to vehicle chassis equipment technical field, is provided with the heat dissipation portion on the chassis, the heat dissipation portion is provided with a plurality of mutually parallel heat dissipation grating, and the inner airflow passage is formed between two adjacent heat dissipation grating, is provided with a plurality of mutually parallel heat dissipation fin on the upper end surface of a plurality of heat dissipation grating, and the outer heat dissipation passage is formed between two adjacent heat dissipation fins, and the interval between two adjacent heat dissipation grating is less than the interval between two adjacent heat dissipation fins, the heat dissipation fin upper edge contour line is extended from both sides to the center symmetry, and one side contour line section includes side horizontal section, large angle drop section, small angle rise section, central horizontal section in proper order, and the scheme simple structure can be high -efficient heat dissipation under the scene such as static parking, low -speed driving, high -speed operation etc.

Description

Technical Field

[0001] This utility model relates to the field of vehicle chassis equipment technology, specifically to an efficient heat dissipation structure for an unmanned vehicle drive-by-wire chassis. Background Technology

[0002] In the drive-by-wire chassis of autonomous vehicles, semiconductor components near the braking system are often operating in a continuously high-temperature environment. Existing heat dissipation methods are limited by structural design and cannot quickly dissipate heat, causing components to operate at high temperatures for extended periods. This not only accelerates performance degradation and significantly shortens lifespan but also increases the probability of failure, seriously threatening the overall reliability of the chassis. For example, in long-term, high-intensity operation scenarios, high temperatures can easily cause component malfunctions or shutdowns, affecting the normal operation of the autonomous vehicle. To solve these problems, this invention proposes a highly efficient heat dissipation structure. By optimizing the shape, layout, and intelligent control methods of the heat dissipation components, it significantly improves heat dissipation efficiency and ensures the stable operation of key chassis components. Utility Model Content

[0003] In view of the above, the purpose of this utility model is to provide an efficient heat dissipation structure for the driverless vehicle chassis, addressing the problems mentioned in the background art.

[0004] This solution presents an efficient heat dissipation structure for an unmanned vehicle drive-by-wire chassis. The chassis is equipped with a heat dissipation unit, which has several parallel heat dissipation grilles. An internal airflow channel is formed between two adjacent heat dissipation grilles. Several parallel heat dissipation fins are arranged on the upper surface of the heat dissipation grilles, and an external heat dissipation channel is formed between two adjacent heat dissipation fins. The interval between two adjacent heat dissipation grilles is smaller than the interval between two adjacent heat dissipation fins. The upper edge contour line of the heat dissipation fins extends symmetrically from both sides to the center. The single-sided contour line segment includes, in sequence, a side horizontal segment, a large-angle descending segment, a small-angle ascending segment, and a central horizontal segment.

[0005] In some embodiments, a plurality of heat dissipation fins and a plurality of heat dissipation grilles are arranged in a crisscross pattern.

[0006] In some embodiments, the included angle between the plurality of heat dissipation fins and the plurality of heat dissipation grilles is 90°.

[0007] In some embodiments, a cooling fan is included, which is disposed on the side of the chassis near the heat dissipation section.

[0008] In some embodiments, a thermally conductive silicone layer is provided at the lower end of the heat dissipation fins.

[0009] In some embodiments, the thickness of the thermally conductive silicone layer is 0.3 mm to 0.8 mm.

[0010] In some embodiments, the horizontal side segment is connected to the large-angle descending segment, and the included angle between the horizontal side segment and the large-angle descending segment is 115°~130°.

[0011] In some embodiments, the large-angle descending segment is connected to the small-angle ascending segment, and the included angle between the large-angle descending segment and the small-angle ascending segment is 110°~125°.

[0012] In some embodiments, the side horizontal segment and the central horizontal segment are on the same plane.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this design, the heat dissipation section is equipped with several parallel heat dissipation grilles, forming an internal airflow channel between adjacent grilles. Several parallel heat dissipation fins are arranged on the upper surface of these grilles, forming an external heat dissipation channel between adjacent fins. The spacing between adjacent grilles is smaller than the spacing between adjacent fins. The smaller spacing of the internal airflow channel formed by the grilles accelerates the concentrated flow of hot air inside the chassis, reducing heat accumulation around critical components. The larger spacing of the external heat dissipation channel formed by the fins provides more space for heat to diffuse to the outside. Combined with their intersecting layout, preferably at a 90° angle, a three-dimensional heat absorption-conduction-dissipation path is formed, allowing heat to be quickly transferred from the component surface to the outside, reducing the risk of localized high temperatures.

[0015] In this design, the outline of the upper edge of the heat dissipation fins extends symmetrically from both sides towards the center. Each side outline segment sequentially includes a horizontal side segment, a large-angle descending segment, a small-angle rising segment, and a central horizontal segment. The horizontal side segment connects to the large-angle descending segment, forming an angle of 115°~130°. The large-angle descending segment connects to the small-angle rising segment, forming an angle of 110°~125°. The horizontal side segment and the central horizontal segment are on the same plane. This symmetrical structure of the horizontal side segment, large-angle descending segment, small-angle rising segment, and central horizontal segment of the upper edge of the heat dissipation fins increases the contact area with air compared to a traditional straight outline. Simultaneously, the wavy, sawtooth design further expands the heat dissipation area, enhancing the heat exchange efficiency between the fins and the airflow, significantly increasing the heat dissipated per unit time.

[0016] In this design, a thermally conductive silicone layer is provided at the lower end of the heat dissipation fins. The thickness of the thermally conductive silicone layer is 0.3mm~0.8mm. The thermally conductive silicone layer ensures good contact between the heat dissipation fins and the heat-generating components on the chassis, reduces thermal resistance, and allows heat to be transferred from the components to the heat dissipation fins more quickly, thus enhancing the heat conduction effect. Moreover, its thickness is controlled at 0.3mm~0.8mm, which ensures a good fit without adversely affecting the normal operation of the components. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure in this application;

[0018] Figure 2 This is a schematic diagram of the heat dissipation unit in the chassis of this application;

[0019] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 This is a schematic diagram showing the disassembled structure of the heat dissipation grille and heat dissipation fins in this application;

[0021] Figure 5 This is a front view of the heat dissipation fin portion in this application.

[0022] Reference numerals: 1-chassis, 2-heat dissipation unit, 3-heat dissipation grille, 4-heat dissipation fins, 41-side horizontal section, 42-large angle descending section, 43-small angle ascending section, 44-central horizontal section. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figures 1 to 5The diagram illustrates a high-efficiency heat dissipation structure for a driverless vehicle's drive-by-wire chassis. The chassis 1 has a heat dissipation unit 2, which comprises several parallel heat dissipation grilles 3. An internal airflow channel is formed between adjacent grilles 3. Several parallel heat dissipation fins 4 are arranged on the upper surfaces of the grilles 3, forming an external heat dissipation channel between adjacent fins 4. The spacing between adjacent grilles 3 is smaller than the spacing between adjacent fins 4. The smaller spacing of the internal airflow channel formed by the grilles 3 accelerates the concentrated flow of hot air inside the chassis 1, reducing heat accumulation around key components. The larger spacing of the external heat dissipation channel formed by the fins 4 provides more space for heat to diffuse to the outside. The preferred angle between the two is 90°, forming a three-dimensional heat absorption-conduction-dissipation path, allowing heat to be quickly transferred from the component surface to the outside, reducing the risk of localized high temperatures.

[0025] By designing different intervals between the internal and external airflow channels, it can adapt to airflow speeds under different operating conditions: at low speeds, the narrow-interval internal channels can accelerate the flow of internal hot air; at high speeds, the wide-interval external channels can quickly expel heat. At the same time, the stepped structure of the ventilation holes, combined with the aerodynamic characteristics of the vehicle during operation, complements natural convection and forced cooling fans, enabling the structure to dissipate heat efficiently in scenarios such as static parking, low-speed driving, and high-speed operation.

[0026] In the above embodiment, a plurality of heat dissipation fins 4 and a plurality of heat dissipation grilles 3 are arranged intersecting each other, wherein the included angle between the plurality of heat dissipation fins 4 and the plurality of heat dissipation grilles 3 is 90°, thereby forming a mesh-like heat dissipation structure, thereby preventing external dust from being sucked into the heat dissipation structure and thus affecting the heat dissipation effect.

[0027] In some embodiments, the upper edge contour line of the heat dissipation fin 4 extends symmetrically from both sides towards the center. The single-side contour line segment sequentially includes a side horizontal segment 41, a large-angle descending segment 42, a small-angle rising segment 43, and a central horizontal segment 44. The side horizontal segment 41 is connected to the large-angle descending segment 42, and the included angle between the side horizontal segment 41 and the large-angle descending segment 42 is 115°~130°. The large-angle descending segment 42 is connected to the small-angle rising segment 43, and the included angle between the large-angle descending segment 42 and the small-angle rising segment 43 is 110°~125°. The side horizontal segment 41 and the central horizontal segment 44 are on the same plane. The symmetrical structure of the side horizontal segment 41, the large-angle descending segment 42, the small-angle rising segment 43, and the central horizontal segment 44 on the upper edge of the heat dissipation fin 4 increases the contact area with air compared to the traditional straight contour. At the same time, the wavy sawtooth design further expands the heat dissipation area and enhances the heat exchange efficiency between the fins and the airflow, significantly increasing the heat dissipated per unit time.

[0028] In some embodiments, a cooling fan is included, which is mounted on the chassis 1 on the side near the heat sink 2. The cooling fan, in conjunction with a temperature sensor and a PID control algorithm, can automatically adjust its speed based on the real-time temperature of the component: when the temperature is below a threshold, it operates at a low speed to reduce energy consumption; when the threshold is reached, it automatically starts or accelerates to avoid overheating or underheating, thus extending the fan's lifespan while ensuring effective heat dissipation. The dual ball bearings have a design life of over 50,000 hours.

[0029] In some embodiments, a thermally conductive silicone layer is provided at the lower end of the heat dissipation fin 4. The thickness of the thermally conductive silicone layer is 0.3mm to 0.8mm. The provision of the thermally conductive silicone layer ensures good contact between the heat dissipation fin 4 and the heat-generating element on the chassis 1, reduces thermal resistance, and enables heat to be transferred from the element to the heat dissipation fin 4 more quickly, thereby enhancing the heat conduction effect. Moreover, its thickness is controlled at 0.3mm to 0.8mm, which can ensure the fit effect without adversely affecting the normal operation of the element.

[0030] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency heat dissipation structure for a driverless vehicle drive chassis, wherein a heat dissipation unit (2) is provided on the chassis (1), characterized in that, The heat dissipation part (2) is provided with a number of parallel heat dissipation grilles (3), and an internal airflow channel is formed between two adjacent heat dissipation grilles (3). A number of parallel heat dissipation fins (4) are provided on the upper surface of the number of heat dissipation grilles (3), and an external heat dissipation channel is formed between two adjacent heat dissipation fins (4). The interval between two adjacent heat dissipation grilles (3) is smaller than the interval between two adjacent heat dissipation fins (4). The upper edge contour line of the heat dissipation fins (4) extends symmetrically from both sides to the center. The single-side contour line segment includes, in sequence, a side horizontal segment (41), a large-angle descending segment (42), a small-angle ascending segment (43), and a central horizontal segment (44).

2. The high-efficiency heat dissipation structure for the unmanned vehicle drive-by-wire chassis according to claim 1, characterized in that, Several heat dissipation fins (4) and several heat dissipation grilles (3) are arranged in a cross pattern.

3. The high-efficiency heat dissipation structure for the unmanned vehicle drive-by-wire chassis according to claim 2, characterized in that, The included angle between the plurality of heat dissipation fins (4) and the plurality of heat dissipation grilles (3) is 90°.

4. The high-efficiency heat dissipation structure for the unmanned vehicle drive-by-wire chassis according to claim 1, characterized in that, Includes a cooling fan, which is mounted on the chassis (1) on the side near the heat dissipation part (2).

5. The high-efficiency heat dissipation structure for the unmanned vehicle drive-by-wire chassis according to claim 1, characterized in that, A thermally conductive silicone layer is provided at the lower end of the heat dissipation fins (4).

6. The high-efficiency heat dissipation structure for the unmanned vehicle drive-by-wire chassis according to claim 5, characterized in that, The thickness of the thermally conductive silicone layer is 0.3mm to 0.8mm.

7. The high-efficiency heat dissipation structure for the unmanned vehicle drive-by-wire chassis according to claim 1, characterized in that, The horizontal side section (41) is connected to the large-angle descending section (42), and the included angle between the horizontal side section (41) and the large-angle descending section (42) is 115°~130°.

8. The high-efficiency heat dissipation structure for the unmanned vehicle drive-by-wire chassis according to claim 1, characterized in that, The large-angle descending segment (42) is connected to the small-angle ascending segment (43), and the included angle between the large-angle descending segment (42) and the small-angle ascending segment (43) is 110°~125°.

9. The high-efficiency heat dissipation structure for the unmanned vehicle drive-by-wire chassis according to claim 1, characterized in that, The side horizontal segment (41) and the central horizontal segment (44) are on the same plane.

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