A cooling fan for pure electric locomotives

Abstract

This utility model provides a cooling ventilator for pure electric vehicles. The cooling ventilator for pure electric vehicles includes a ventilator assembled as a unit via a left bracket and a right bracket and installed on the front floor of the vehicle. The bottoms of both the left and right brackets are fixedly connected to the top of a support plate. The inner walls of both sides of the support plate are fixedly connected to the two ends of a sliding rod. The middle of the outer wall of the sliding rod is slidably connected to the inner wall of a second spring. One end of the second spring is fixedly connected to one end of a sliding ring. The inner wall of the sliding ring is slidably connected to the outer wall of the sliding rod. The top inner wall of the sliding ring is rotatably connected to the inner wall of one end of a connecting rod via a rotating shaft. The inner wall of the other end of the connecting rod is rotatably connected to the bottom inner wall of a mounting bracket via a rotating shaft. The top of the mounting bracket is fixedly connected to the bottom of the ventilator. The cooling ventilator for pure electric vehicles provided by this utility model has the advantage of improving the stability and reliability of the ventilator in complex vibration environments.

Description

Technical Field

[0001] This utility model relates to the field of pure electric vehicles, and in particular to a cooling ventilator for pure electric vehicles. Background Technology

[0002] With the rapid development of the new energy vehicle industry, pure electric vehicles are gradually becoming an important direction for future transportation. Unlike traditional fuel vehicles, the power system of pure electric vehicles mainly consists of power batteries, drive motors, and electronic control systems. During operation, a large amount of heat is generated, especially in the drive motor and battery pack under high-power operation, which significantly increases the dependence on thermal management systems. Currently, cooling systems for electric vehicles mostly adopt liquid cooling, supplemented by air cooling. Among them, cooling fans, as one of the key components, are widely used on the outside of the motor housing or in the vehicle's cooling ducts to guide airflow and enhance heat dissipation efficiency. At present, most cooling fans on the market use welding or fixed connection methods, which are difficult to meet the installation requirements of different vehicle platforms. There are also installation methods that use brackets to mount cooling fans, which can effectively and reliably assemble the cooling fan assembly, condenser assembly, and motor radiator assembly together.

[0003] The connecting bracket on the front cooling module of a new energy vehicle disclosed in the utility model authorized announcement number CN207711804U includes a left bracket and a right bracket. Both the left and right brackets are square structures with legs at the top and bottom. The legs are used to install the left and right brackets on the front floor of the vehicle. Mounting holes are provided on the left and right brackets, and the height and position of the mounting holes correspond to the height and position of the mounting holes on the cooling module. The brackets of the above-mentioned device use rubber shock-absorbing pads to alleviate vibration pressure, but in complex vibration environments, this may cause the fan body to loosen or resonate, which may affect the service life of the equipment and the performance of the whole vehicle.

[0004] Therefore, it is necessary to provide a new cooling fan for pure electric vehicles to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a cooling fan for pure electric vehicles.

[0006] This utility model provides a cooling ventilator for pure electric vehicles, comprising a ventilator assembled as a whole by a left bracket and a right bracket. Shock-absorbing components are fixedly connected to the upper and lower ends of both the left and right brackets. Each shock-absorbing component includes a support plate, a sliding rod, a second spring, a sliding ring, a connecting rod, and a mounting bracket. The bottoms of both the left and right brackets are fixedly connected to the top of the support plate. The inner walls of both sides of the support plate are fixedly connected to the two ends of the sliding rod. The middle of the outer wall of the sliding rod is slidably connected to the inner wall of the second spring. One end of the second spring is fixedly connected to... At one end of the sliding ring, the inner wall of the sliding ring is slidably connected to the outer wall of the sliding rod. The top inner wall of the sliding ring is rotatably connected to the inner wall of one end of the connecting rod via a rotating shaft. The inner wall of the other end of the connecting rod is rotatably connected to the bottom inner wall of the mounting bracket via a rotating shaft. The bottom of the support plate is fixedly connected to the top of the pillar. Two pillars are symmetrically arranged at both ends of the bottom of the support plate. The pillars are used to install the ventilator on the front floor of the car. The top of the mounting bracket is fixedly connected to the bottom of the ventilator. The two sliding rings, the connecting rod, and the mounting bracket are symmetrically arranged at both ends of the sliding rod.

[0007] Preferably, both the left and right supports are square structures, and both the upper and lower ends of the left and right supports are provided with feet. Both the left and right supports are provided with mounting holes, and the height and position of the mounting holes correspond to the height and position of the mounting holes on the ventilator.

[0008] Preferably, the left support is provided with reinforcing ribs, the surfaces of the left and right supports are coated with anti-corrosion paint, the upper and lower ends of the left and right supports are fixedly connected with legs, the upper and lower ends of the left and right supports are fixedly connected with springs, the legs are located on the inner wall of springs, and the bottom of springs is fixedly connected to the top of the support plate.

[0009] Preferably, the ventilator is a condenser manifold, and the height of the left and right supports is greater than the height of the condenser manifold.

[0010] Preferably, the left support is provided with a condenser inlet / outlet pressure plate notch, the height of the left support is 5% to 10% higher than the height of the condenser manifold, and the thickness of the left support is 5% to 10% greater than the diameter of the condenser manifold.

[0011] Preferably, the ventilator is a cooling fan, and two mounting posts are welded on both the left and right brackets. The distance between the mounting posts is the same as the distance between the mounting holes on one side of the cooling fan.

[0012] Compared with related technologies, the cooling fan for pure electric vehicles provided by this utility model has the following beneficial effects: the slide rod acts as a guide to ensure that the sliding ring moves in a straight line and avoids deviation; the second spring provides elastic buffering to absorb vibration energy; and the connecting rod connected by the rotating shaft converts vertical vibration into horizontal displacement, further dispersing and absorbing vibration, and reducing the amount of vibration transmitted to the fan; thus improving the stability and reliability of the fan in complex vibration environments; the symmetrically arranged sliding ring, connecting rod and mounting bracket ensure that vibration from any direction can be evenly dispersed and absorbed, guaranteeing stable operation of the equipment under different working conditions. Attached Figure Description

[0013] Figure 1 A schematic diagram of a preferred embodiment of the cooling fan for pure electric vehicles provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the left support. Figure 3 for Figure 1 The diagram shows the structure of the right support. Figure 4 for Figure 1 The diagram shows the structure of the shock absorption assembly. The following are the labels in the diagram: 1. Ventilation fan; 2. Left support; 3. Support leg; 4. Pressure plate notch; 5. Reinforcing rib; 6. Mounting column; 7. Right support; 8. Mounting hole; 9. Spring No. 1; 10. Support plate; 11. Slide rod; 12. Spring No. 2; 13. Sliding ring; 14. Connecting rod; 15. Mounting bracket; 16. Support column. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Please refer to the following: Figure 1 , Figure 2 , Figure 3 as well as Figure 4 ,in, Figure 1 A schematic diagram of a preferred embodiment of the cooling fan for pure electric vehicles provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the left support. Figure 3 for Figure 1 The diagram shows the structure of the right support. Figure 4 for Figure 1 The diagram shows the structure of the shock absorption assembly.

[0016] In the specific implementation process, such as Figure 1-3As shown, this utility model provides a cooling ventilator for pure electric vehicles, including a ventilator 1. The ventilator 1 is assembled into one unit via a left bracket 2 and a right bracket 7. Both the left bracket 2 and the right bracket 7 are square structures. Support legs 3 are provided at the upper and lower ends of both the left bracket 2 and the right bracket 7. The support legs 3 are used to mount the left bracket 2 and the right bracket 7 to the front floor of the vehicle. Mounting holes 8 are provided on both the left bracket 2 and the right bracket 7. The height and position of the mounting holes 8 correspond to the height and position of the mounting holes 8 on the ventilator 1. A reinforcing rib 5 is provided on the left bracket 2. The surfaces of both the left bracket 2 and the right bracket 7 are coated with an anti-corrosion paint layer. Support legs 3 are fixedly connected to the upper and lower ends of bracket 2 and right bracket 7. Fan 1 is a condenser manifold. The height of left bracket 2 and right bracket 7 is greater than the height of condenser manifold. Condenser inlet and outlet pressure plate notch 4 is provided on left bracket 2. The height of left bracket 2 is 5% to 10% higher than the height of condenser manifold. The thickness of left bracket 2 is 5% to 10% greater than the diameter of condenser manifold. Fan 1 is a cooling fan. Two mounting posts 6 are welded on both left bracket 2 and right bracket 7. The distance between the mounting posts 6 is the same as the distance between the mounting holes 8 on one side of the cooling fan. It should be noted that the aforementioned cooling ventilator for pure electric vehicles (ventilator 1, left bracket 2, support leg 3, pressure plate notch 4, reinforcing rib 5, mounting column 6, right bracket 7, and mounting hole 8) is a connecting bracket (cooling module, left bracket, support leg, pressure plate notch, reinforcing rib, mounting column, right bracket, and mounting hole) disclosed in the existing publication CN207711804U for a front-end cooling module of a new energy vehicle. In this device, the connecting bracket on the front-end cooling module of the new energy vehicle includes a left bracket and a right bracket. Both the left and right brackets are square structures with support legs at the top and bottom. Rubber shock-absorbing pads are provided on the support legs, which are used to install the left and right brackets onto the front-end floor of the vehicle. Mounting holes are provided on the left and right brackets, and the height and position of the mounting holes correspond to the height and position of the mounting holes on the cooling module. Both the left and right brackets are formed by stamping steel plates with a thickness of 1.5mm-2.0mm. Reinforcing ribs are provided on the left and right supports, and the surfaces are coated with anti-corrosion paint. When the cooling module is a subcooled condenser, the height of the condenser's manifold is H, and the diameter of the manifold is ￠D. Therefore, the left support is designed as a rectangular parallelepiped with five closed sides. The height of the left support is greater than H, preferably H+5mm; the support thickness is greater than D, preferably D+5mm. The left support is designed with condenser inlet and outlet pressure plate notches for mounting the condenser. The right support is configured with a suitable structure, with the same height as the left support. To install the condenser, two ￠5mm holes are designed on each of the left and right brackets. When the cooling module is a cooling fan, two internally threaded mounting posts are designed on one side of the bracket, and the distance between the two mounting posts is the same as the distance between the mounting holes on one side of the fan cover. When the cooling module is a motor radiator, two internally threaded mounting posts are designed on the other side of the bracket, and the distance between the two mounting posts is the same as the distance between the mounting holes on one side of the motor radiator. The working principle and operation mode of each mechanism in this device are the same as those of the connecting bracket on the front cooling module of the new energy vehicle that has been disclosed, which enables the device to effectively install the combined ventilation fan.

[0017] In the specific implementation process, refer to Figure 4As shown, this utility model provides a cooling fan for pure electric vehicles. Shock-absorbing components are fixedly connected to the upper and lower ends of both the left support 2 and the right support 7. A first spring 9 is fixedly connected to the upper and lower ends of both the left support 2 and the right support 7. Support legs 3 are located on the inner wall of the first spring 9. The shock-absorbing components include a support plate 10, a sliding rod 11, a second spring 12, a sliding ring 13, a connecting rod 14, and a mounting bracket 15. The bottom of the first spring 9 is fixedly connected to the top of the support plate 10. The inner walls of both sides of the support plate 10 are fixedly connected to the two ends of the sliding rod 11. The middle of the outer wall of the sliding rod 11 is slidably connected to the inner wall of the second spring 12. One end of the second spring 12 is fixedly connected to... One end of the sliding ring 13 is fixedly connected to the sliding ring 13. The inner wall of the sliding ring 13 is slidably connected to the outer wall of the sliding rod 11. The top inner wall of the sliding ring 13 is rotatably connected to the inner wall of one end of the connecting rod 14 via a rotating shaft. The other end inner wall of the connecting rod 14 is rotatably connected to the bottom inner wall of the mounting bracket 15 via a rotating shaft. The bottom of the support plate 10 is fixedly connected to the top of the support column 16. Two support columns 16 are symmetrically arranged at both ends of the bottom of the support plate 10. The support columns 16 are used to install the ventilator 1 on the front floor of the car. The top of the mounting bracket 15 is fixedly connected to the bottom of the ventilator 1. The two sliding rings 13, the connecting rod 14 and the mounting bracket 15 are symmetrically arranged at both ends of the sliding rod 11.

[0018] It should be noted that the first spring 9 is fixedly connected to the bottom of the left support 2 and the right support 7, and is nested in the inner wall of the support leg 3. The support leg 3 acts as a guide structure, restricting the compression direction of the first spring 9, preventing it from shifting laterally, and improving the seismic resistance of the support system. The support plate 10 serves as the basic platform of the entire shock absorption assembly, bearing the load from the support. The first spring 9 mainly undertakes the primary vertical shock absorption function here, realizing the first-level buffer shock absorption and distributing the weight of the ventilator 1 to the entire shock absorption system. The slide rod 11 runs through both sides of the support plate 10, and a second spring 12 is provided in the middle of its outer wall. The sliding ring 13 can slide on the slide rod 11. This causes the second spring 12 to stretch or compress, forming a second-stage horizontal damping path to absorb vibration energy from different directions of the vehicle body; providing multi-degree-of-freedom damping effect and improving the stability of the ventilator 1 under complex road conditions; the sliding ring 13 is connected to one end of the connecting rod 14 via a rotating shaft, and the other end of the connecting rod 14 is connected to the mounting bracket 15. When the sliding ring 13 slides along the sliding rod 11, the angle of the connecting rod 14 changes, causing the mounting bracket 15 to make a slight displacement adjustment. The two sliding rings 13, the connecting rod 14, and the mounting bracket 15 are symmetrically arranged at both ends of the sliding rod 11 to ensure balanced force; forming a mechanical linkage damping structure, improving response sensitivity, and ensuring Ventilation fan 1 can maintain stable operation under various vibration conditions. Primary vibration damping is achieved by spring 9, primarily absorbing vertical vibrations from the upper support. Secondary vibration damping, composed of slide rod 11, sliding ring 13, spring 12, and connecting rod 14, handles horizontal and other combined vibrations. The two-stage damping system works in tandem, enabling ventilation fan 1 to adapt to various vibration environments and extending equipment lifespan. It achieves omnidirectional vibration protection, significantly reducing noise and mechanical fatigue caused by vibration. Springs 9 and 12 are made of high-strength alloy spring steel, possessing good elasticity after heat treatment. Slide rod 11 is made of stainless steel. Made of steel or carbon steel, with a surface coating to enhance wear resistance and rust prevention, structural components such as support plate 10 and mounting bracket 15 use aluminum alloy or stamped steel plates to balance strength and lightweight requirements; shock-absorbing components are installed at the upper and lower ends of the left bracket 2 and right bracket 7 to form an upper and lower linkage shock absorption system. The upper shock absorption is used to buffer vertical impacts from the vehicle body structure, and the lower shock absorption is used to absorb horizontal and combined directional vibrations transmitted by the chassis, achieving omnidirectional shock absorption protection and enhancing the adaptability of the equipment under complex road conditions; the top of the pillar 16 is connected to the support plate 10, and the bottom is fixed to the front floor of the vehicle. The two pillars 16 are symmetrically arranged to provide structural support and positioning.

[0019] The working principle of this utility model is as follows: When the ventilator 1 starts to operate, it generates airflow to cool the motor, battery, or other heat source components, achieving active heat dissipation and maintaining the normal operating temperature of the vehicle's key systems; when the vehicle encounters bumps or uneven road surfaces during driving, the vibration from the vehicle body is transmitted to the first spring 9 through the left bracket 2 and the right bracket 7. The first spring 9 is compressed or stretched, absorbing most of the vertical vibration energy. The support leg 3 is nested inside the first spring 9, serving as a guide and limiting function to prevent the first spring 9 from becoming unstable; reducing the vertical impact force directly transmitted to the ventilator 1, the residual vibration continues to be transmitted downwards to the support plate 10. The slide rod 11 is fixedly connected to both sides of the support plate 10 as a guide structure. The sliding ring 13 slides along the slide rod 11, causing the second spring 12 to stretch. Or compressed, the second spring 12 further absorbs the vibration energy in the horizontal direction and other combined directions; realizes multi-degree-of-freedom vibration reduction protection, and improves the adaptability and reliability of the equipment under complex road conditions; when the sliding ring 13 moves on the slide rod 11, it drives the connecting rod 14 to change its angle through the rotating shaft. The other end of the connecting rod 14 is connected to the mounting bracket 15. The top of the mounting bracket 15 is fixedly connected to the bottom of the ventilator 1, thereby isolating the vibration outside the ventilator body. The two sliding rings 13, the connecting rod 14 and the mounting bracket 15 are symmetrically arranged at both ends of the slide rod 11 to ensure balanced force; forming a linkage response structure, improving the vibration reduction sensitivity, and ensuring that the ventilator maintains stable operation under various vibration conditions; the bottom of the support plate 10 is fixedly connected to two symmetrically arranged pillars 16, and the pillars 16 are installed on the front floor of the car by bolts or welding.

[0020] This pure electric vehicle cooling fan has the following advantages: Shock-absorbing components are installed at both the upper and lower ends of the left support 2 and the right support 7, forming a vertically linked shock-absorbing system. Each shock-absorbing component uses a combination of primary shock absorption (spring 9) and secondary shock absorption (spring 12 and linkage mechanism). Spring 9 absorbs the main vertical vibration energy, while spring 12, in conjunction with sliding ring 13 and linkage 14, achieves horizontal and combined-direction buffering, improving the overall system's shock absorption sensitivity and response capability, significantly reducing the impact of vibration caused by vehicle movement, and protecting the fan body 1. The shock-absorbing components are centrally located below the support, without occupying additional space. The space is designed so that the support leg 3 is nested inside the first spring 9, saving longitudinal installation space. It is suitable for space-constrained areas such as the front floor of new energy vehicles, which is in line with the development trend of vehicle lightweighting and miniaturization. The two sliding rings 13, the connecting rod 14 and the mounting bracket 15 are symmetrically arranged at both ends of the slide rod 11 to form a symmetrical linkage damping structure, ensuring uniform load distribution, avoiding tilting or resonance caused by unilateral force, and improving the stability and safety of equipment operation. The multi-stage damping structure significantly reduces the vibration transmission during the operation of the ventilator 1, reduces noise and mechanical fatigue caused by vibration, improves the noise, vibration and acoustic roughness performance of the whole vehicle, and enhances driving comfort.

[0021] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0022] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A cooling fan for a pure electric locomotive, comprising a fan (1) which is assembled in one piece with a left bracket (2) and a right bracket (7) and is installed on the front end floor of the automobile, the bottom of the left bracket (2) and the right bracket (7) is fixedly connected with a damping assembly, characterized in that, The shock absorption assembly includes a support plate (10), a slide rod (11), a second spring (12), a sliding ring (13), a connecting rod (14), and a mounting bracket (15). The bottoms of the left bracket (2) and the right bracket (7) are fixedly connected to the top of the support plate (10). The inner walls of both sides of the support plate (10) are fixedly connected to the two ends of the slide rod (11). The middle of the outer wall of the slide rod (11) is slidably connected to the inner wall of the second spring (12). One end of the second spring (12) is fixedly connected to the sliding ring (13). At one end of 13), the inner wall of the sliding ring (13) is slidably connected to the outer wall of the slide rod (11), the top inner wall of the sliding ring (13) is rotatably connected to the inner wall of one end of the connecting rod (14) through a rotating shaft, the other end inner wall of the connecting rod (14) is rotatably connected to the bottom inner wall of the mounting bracket (15) through a rotating shaft, the top of the mounting bracket (15) is fixedly connected to the bottom of the ventilator (1), and the two sliding rings (13), the connecting rod (14) and the mounting bracket (15) are symmetrically provided with the two ends of the slide rod (11).

2. The cooling ventilator for a pure electric locomotive according to claim 1, characterized by The left bracket (2) and the right bracket (7) are both square structures. The upper and lower ends of the left bracket (2) and the right bracket (7) are provided with support feet (3). The support feet (3) are used to install the left bracket (2) and the right bracket (7) on the front floor of the car. The left bracket (2) and the right bracket (7) are provided with mounting holes (8). The height and position of the mounting holes (8) correspond to the height and position of the mounting holes (8) on the ventilator (1).

3. The cooling ventilator for a pure electric locomotive according to claim 2, characterized by The left support (2) is provided with reinforcing ribs (5). The surfaces of the left support (2) and the right support (7) are coated with anti-corrosion paint. The upper and lower ends of the left support (2) and the right support (7) are fixedly connected with legs (3). The bottom of the left support (2) and the right support (7) are fixedly connected with springs (9). The legs (3) are located on the inner wall of springs (9). The bottom of springs (9) is fixedly connected to the top of the support plate (10).

4. The cooling ventilator for a pure electric locomotive according to claim 3, characterized by The ventilator (1) is a condenser manifold, and the height of the left support (2) and the right support (7) is greater than the height of the condenser manifold.

5. The cooling fan for a pure electric vehicle as set forth in claim 4, wherein The left support (2) is provided with a condenser inlet / outlet pressure plate notch (4). The height of the left support (2) is 5% to 10% higher than the height of the condenser manifold. The thickness of the left support (2) is 5% to 10% greater than the diameter of the condenser manifold.

6. The cooling ventilator for a pure electric locomotive according to claim 5, characterized by The ventilator (1) is a cooling fan. Two mounting posts (6) are welded on both the left bracket (2) and the right bracket (7). The distance between the mounting posts (6) is the same as the distance between the mounting holes (8) on one side of the cooling fan.

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