A car generator assembly

Abstract

This utility model relates to the field of automotive parts technology, specifically to an automotive generator assembly. The cylinder has multiple heat dissipation holes. Two detachable first annular frames are symmetrically arranged on both sides of the annular support frame. The first annular frames are penetrated by the cylinder, and their inner walls are fitted against the outer wall of the cylinder. Each first annular frame has a slot containing a first dustproof net. The two ends of the first dustproof net are glued and fixed within the slot. The first dustproof net within the slot of the first annular frame covers the heat dissipation holes of the cylinder, preventing external impurities from entering. Simultaneously, a second dustproof net is provided on the inner ring of a second annular frame at the top of the air inlet duct via a threaded fastener, filtering the air entering the ventilation components. This dual dustproof structure prevents impurities from accumulating and covering the windings and blocking the heat dissipation channels during vehicle operation, effectively avoiding short circuits, bearing jamming, and other malfunctions, thus extending the generator's service life.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to an automotive generator assembly. Background Technology

[0002] As new energy vehicles develop towards higher power and higher integration, the power density of automotive motor modules (such as drive motors and generator modules) continues to increase. During operation, core components such as windings, stators, and bearings generate a large amount of heat. Excessive operating temperature of the motor module will significantly reduce its insulation performance and drastically shorten its service life. Therefore, efficient heat dissipation has become a core requirement for ensuring the stable operation of the motor module.

[0003] The current mainstream heat dissipation methods for automotive motor modules include natural cooling, forced air cooling, and liquid cooling. Among them, natural cooling is widely used in low- and medium-power motor modules due to its simple structure, low cost, and convenient maintenance. Natural cooling systems usually require heat dissipation vents to be opened around the motor housing to exchange heat and remove the heat from the motor module.

[0004] In existing technologies, heat dissipation vents are mostly exposed structures. During vehicle operation, impurities can easily enter the module through the heat dissipation vents. Long-term accumulation will cover the winding surface, block the heat dissipation channels, and cause a sharp drop in heat dissipation efficiency, or even cause faults such as short circuits and bearing jamming. Utility Model Content

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides an automotive generator assembly.

[0006] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: an automotive generator assembly, comprising a housing and a base, wherein the housing includes an annular support frame, two cylindrical bodies are symmetrically arranged on both sides of the annular support frame, and the outer ends of the cylindrical bodies are provided with detachable end caps, and the annular support frame is fixed to the upper end of the base; The cylinder is provided with multiple heat dissipation holes. Two detachable first annular frames are symmetrically arranged on both sides of the annular support frame. The first annular frame is penetrated by the cylinder, and the inner wall of the first annular frame is attached to the outer wall of the cylinder. The first annular frame is provided with a slot, and a first dustproof net is provided in the slot. The two ends of the first dustproof net are glued and fixed in the slot. Multiple arc-shaped support plates are fixedly arranged in the slot, and the multiple arc-shaped support plates are all located inside the first dustproof net. The ring support frame is equipped with a ventilation component, and the vehicle generator assembly is equipped with a temperature sensor. The temperature sensor and the ventilation component are connected wirelessly.

[0007] Furthermore, an improvement of this utility model is that the annular support frame and the cylinder are an integrated structure.

[0008] To make the first ring frame more securely installed, the present invention includes the following improvements: multiple limiting rods are fixedly installed on the inner wall of the first ring frame, and multiple limiting grooves are provided on the outer wall of the cylinder. The limiting rods are inserted into the limiting grooves and fit tightly with the limiting grooves.

[0009] Furthermore, the improvement of this utility model is that the two sides of the first annular frame respectively contact the outer side of the annular support frame and the inner side of the end cap, and the two sides of the first annular frame are respectively in close contact with the outer side of the annular support frame and the inner side of the end cap.

[0010] To improve the heat dissipation of the automotive generator assembly, the present invention includes the following improvements: the annular support frame is provided with multiple air inlets; the ventilation assembly includes a cooling fan and a distribution box; the inner wall of the distribution box is fitted to the outer wall of the annular support frame; and base plates are fixed at both ends of the distribution box, with the base plates fixed to the upper end of the base by screws; the inner side of the distribution box is provided with multiple guide holes communicating with the air inlets; the cooling fan is located above the annular support frame; an adapter tube is fixedly installed at the air outlet end of the cooling fan, and the adapter tube is fixed to the upper end of the distribution box and communicates with the distribution box; an air inlet duct is fixedly installed at the air inlet end of the cooling fan; a second annular frame is fastened to the top of the air inlet duct, and the second annular frame is threadedly connected to the air inlet duct; and a second dustproof net is fixedly installed on the inner ring of the second annular frame.

[0011] Furthermore, an improvement of this utility model is that the diversion box, the adapter tube, the air inlet tube, the second annular frame, and the first annular frame are all made of metal.

[0012] (III) Beneficial Effects Compared with the prior art, the present invention provides an automotive generator assembly with the following advantages: The first dustproof net inside the first annular overhead groove can cover the heat dissipation holes of the cylinder, blocking external impurities from entering through the heat dissipation holes. At the same time, the second dustproof net is provided on the inner ring of the second annular frame at the top of the air inlet cylinder through threaded fastening, which can filter the air entering the ventilation components. The combination of the double dustproof structure can prevent impurities from accumulating and covering the windings and blocking the heat dissipation channels during vehicle operation, effectively avoiding faults such as short circuits and bearing jamming, and extending the service life of the generator. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This utility model Figure 1 The main view; Figure 3 This is a first-view assembly drawing of the first dustproof net in this utility model; Figure 4This is a second-view assembly diagram of the first dustproof net in this utility model.

[0014] In the diagram: 1. Base; 2. Annular support frame; 3. Cylinder body; 4. Heat dissipation hole; 5. Air inlet hole; 6. First annular frame; 7. Empty slot; 8. First dustproof net; 9. Arc-shaped support plate; 10. Limiting rod; 11. Limiting slot; 12. End cap; 13. Diverter box; 14. Base plate; 15. Adapter cylinder; 16. Heat dissipation fan; 17. Air inlet cylinder; 18. Second annular frame; 19. Second dustproof net. Detailed Implementation

[0015] 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.

[0016] Please see Figures 1-4 This utility model proposes an automotive generator assembly, including a housing and a base 1. The housing includes an annular support frame 2, with two cylindrical bodies 3 symmetrically arranged on both sides of the annular support frame 2. The outer end of the cylindrical body 3 is provided with a detachable end cap 12. The annular support frame 2 is fixed to the upper end of the base 1. The cylinder 3 is provided with multiple heat dissipation holes 4. Two detachable first annular frames 6 are symmetrically arranged on both sides of the annular support frame 2. The first annular frame 6 is penetrated by the cylinder 3, and the inner wall of the first annular frame 6 is attached to the outer wall of the cylinder 3. The first annular frame 6 is provided with a slot 7. A first dustproof net 8 is provided in the slot 7. The two ends of the first dustproof net 8 are glued and fixed in the slot 7. Multiple arc-shaped support plates 9 are fixedly arranged in the slot 7. The multiple arc-shaped support plates 9 are all located inside the first dustproof net 8. The annular support frame 2 is equipped with a ventilation component, and a temperature sensor is installed inside the automotive generator assembly. The temperature sensor is connected to the ventilation component via a wireless signal.

[0017] Basic framework assembly: The annular support frame 2 and the cylinder 3 are an integrated structure.

[0018] The base serves as the overall supporting foundation, with the annular support frame 2 fixed to the upper end of the base 1. Its two sides form an integrated structure with the cylinder 3, together constituting the housing frame of the generator and ensuring the installation stability of the core components. Multiple heat dissipation holes 4 are reserved on the outside of the cylinder 3 to provide channels for the internal heat to dissipate.

[0019] Installation of the first ring frame 6 and the dustproof structure: Multiple limiting rods 10 are fixedly installed on the inner wall of the first annular frame 6, and multiple limiting grooves 11 are provided on the outer wall of the cylinder 3. The limiting rods 10 are inserted into the limiting grooves 11 and fit tightly with the limiting grooves 11.

[0020] The two sides of the first annular frame 6 contact the outer side of the annular support frame 2 and the inner side of the end cap 12 respectively, and the two sides of the first annular frame 6 are tightly fitted to the outer side of the annular support frame 2 and the inner side of the end cap 12 respectively.

[0021] Two first annular frames 6 are symmetrically fitted on the outer sides of the two cylindrical bodies 3, so that the inner wall of the first annular frame 6 fits against the outer wall of the cylindrical body 3. Multiple limiting rods 10 on the inner wall of the first annular frame 6 are inserted into the limiting grooves 11 on the outer wall of the cylinder 3 and fit tightly to achieve radial positioning.

[0022] The first dustproof net 8 (fixed at both ends by adhesive) is pre-fixed in the slot 7 of the first ring frame 6. Multiple arc-shaped support plates 9 in the slot 7 are located inside the first dustproof net 8 to provide support for the dustproof net and prevent it from being deformed by airflow impact.

[0023] End cap 12 fixing and overall limiting: A detachable end cap 12 is installed at the outer end of the cylinder 3, so that the inner side of the end cap 12 fits tightly against the outer side of the first annular frame 6, and the inner side of the first annular frame 6 is in close contact with the outer side of the annular support frame 2. Through the bidirectional clamping of the end cap 12 and the annular support frame 2, the first annular frame 6 is firmly fixed to the cylinder 3, ensuring that it does not loosen during vehicle vibration.

[0024] Ventilation component assembly: The annular support frame 2 is provided with multiple air inlets 5. The ventilation assembly includes a cooling fan 16 and a distribution box 13. The inner wall of the distribution box 13 is attached to the outer wall of the annular support frame 2, and the two ends of the distribution box 13 are fixedly provided with base plates 14. The base plates 14 are fixed to the upper end of the base 1 by screws. The inner side of the distribution box 13 is provided with multiple guide holes communicating with the air inlets 5. The cooling fan 16 is located above the annular support frame 2. The air outlet end of the cooling fan 16 is fixedly provided with an adapter cylinder 15. The adapter cylinder 15 is fixed to the upper end of the distribution box 13 and is connected to the distribution box 13. The air inlet end of the cooling fan 16 is fixedly provided with an air inlet duct 17. The top end of the air inlet duct 17 is fastened with a second annular frame 18. The second annular frame 18 is threadedly connected to the air inlet duct 17. The inner ring of the second annular frame 18 is fixedly provided with a second dustproof net 19.

[0025] The distribution box 13, the adapter tube 15, the air inlet tube 17, the second ring frame 18, and the first ring frame 6 are all made of metal.

[0026] Multiple air inlets 5 are opened on the annular support frame 2. The inner wall of the distribution box 13 of the ventilation component is attached to the outer wall of the annular support frame 2. The bottom plates 14 at both ends are fixed to the upper end of the base 1 by screws, so that the multiple guide holes on the inner side of the distribution box 13 are precisely connected to the air inlets 5 of the annular support frame 2.

[0027] The cooling fan 16 is located above the annular support frame 2. The adapter tube 15 at its air outlet end is fixed to and connected to the upper end of the distribution box 13. The top of the air inlet tube 17 at the air inlet end is threaded onto the second annular frame 18. The second dustproof net 19 on the inner ring of the second annular frame 18 is then fixed, forming a complete air inlet filtration channel.

[0028] Synergistic effect of heat dissipation and dust prevention during operation: When the generator is running, if the internal temperature is higher than the rated threshold, the cooling fan 16 will start. At this time, the outside air enters through the air inlet duct 17 and is first filtered out by the second dust filter 19. Clean air enters the distribution box 13 through the adapter tube 15, and flows into the annular support frame 2 and the cylinder 3 through the guide hole and air inlet 5, where it exchanges heat with the core components of the generator to improve heat dissipation efficiency. The air carrying heat is discharged through the heat dissipation hole 4 of the cylinder 3.

[0029] When the temperature inside the generator is not higher than the rated threshold, the equipment dissipates heat naturally through the heat dissipation hole 4. The first dustproof net 8 can prevent external impurities from entering the equipment through the heat dissipation hole 4. At the same time, the arc-shaped support plate 9 ensures that the first dustproof net 8 maintains a stable shape under the impact of airflow.

[0030] The temperature sensor and ventilation components inside the generator assembly are linked by wireless signals: when the internal temperature is higher than the rated threshold, the cooling fan 16 automatically starts, and the air carrying heat is discharged from the heat dissipation hole 4 of the cylinder 3 to achieve forced air cooling; when the temperature does not exceed the threshold, the equipment dissipates heat naturally through the heat dissipation hole 4, taking into account both heat dissipation efficiency and energy saving requirements.

[0031] The annular support frame 2 and the cylinder 3 adopt an integrated structure, laying a stable shell frame. The annular support frame 2 is fixed to the upper end of the base 1, and the overall support is solid. The first annular frame 6 is radially positioned by inserting the inner wall limiting rod 10 into the outer wall limiting groove 11 of the cylinder 3. Both sides are also tightly clamped by the outer side of the annular support frame 2 and the inner side of the end cap 12, ensuring that it is firmly installed on the outer side of the cylinder 3.

[0032] First ring frame 6: Selection: Aluminum alloy profile (6061-T6), thickness 2-3mm; Selection criteria: The document specifies that it must be made of metal, fit the outer wall of cylinder 3, and be detachable. 6061-T6 aluminum alloy has high strength (yield strength ≥276MPa) and good machinability. It can be CNC machined to fit the inner hole (tolerance H7) and the slot 7 (for installing the first dustproof net 8) of cylinder 3; the inner wall can be integrally machined with the mounting slot of the limit rod 10 without additional welding; after anodizing, the surface has strong corrosion resistance and can resist airflow erosion and dust adhesion for a long time.

[0033] First dustproof net 8 / Second dustproof net 19: Selection: 304 stainless steel wire mesh, mesh count 80-120, wire diameter 0.12-0.15mm; Selection criteria: The system needs to filter dust and impurities generated during vehicle operation without obstructing ventilation. 304 stainless steel is corrosion-resistant (salt spray test ≥480h) and can withstand high engine compartment temperatures (≤120℃) for extended periods. The 80-120 mesh size effectively intercepts most particulate impurities (≥150μm) while maintaining adequate ventilation (ventilation rate ≥70%), preventing excessive air pressure loss. The first dust filter 8 is bonded to the first annular frame 6 slot 7 at both ends using high-temperature resistant epoxy resin adhesive (temperature resistance ≤150℃), and the second dust filter 19 is spot-welded to the inner ring of the second annular frame 18.

[0034] Arc-shaped support plate 9: Selection: 304 stainless steel sheet, thickness 0.8-1.2mm; Selection criteria: The first dustproof net 8 needs to be supported to prevent deformation caused by airflow impact. 304 stainless steel has high strength (tensile strength ≥515MPa) and good toughness. After being stamped into an arc shape, it can fit into the inner wall of the first annular frame 6 slot 7. It is fixed in the slot 7 by laser welding, with a uniform distribution of 50-80mm spacing. It can provide stable support without blocking the ventilation channel, and is suitable for the dual needs of dustproof netting for filtration and ventilation.

[0035] Second ring frame 18: Selection: Brass (H62) or aluminum alloy (6061-T6), inner diameter adapted to the 17mm outer diameter of the air inlet duct; Selection criteria: It needs to be threaded to the air inlet duct 17. Brass H62 has good machinability (thread machining accuracy can reach 6H grade) and excellent sealing performance. The surface chrome plating (chrome layer thickness 0.5-1μm) can improve wear resistance and corrosion resistance. Aluminum alloy 6061-T6 is lightweight, and the surface is beautiful and corrosion resistant after anodizing. Both can be detachably connected to the air inlet duct 17 through threads (such as M20×1.5, M25×1.5), which facilitates the maintenance of the second dust screen 19.

[0036] Cooling fan 16: Selection: Automotive-grade axial flow fan, voltage 12V / 24V (compatible with vehicle power supply), air volume 10-15CFM, static pressure 50-80Pa; Selection criteria: Forced air cooling is required; the axial fan has a compact structure (60×60×25mm or 80×80×30mm) and is suitable for installation above the ring support frame 2; the fan blades are made of ABS + fiberglass (15% fiberglass content), with a temperature resistance of ≤120℃ and anti-aging properties; the motor housing is made of aluminum alloy, with good thermal conductivity and an IP54 protection rating (dustproof and splashproof), suitable for dusty environments in engine compartments; it can automatically start and stop (starting at ≥80℃ and stopping at ≤60℃) by receiving temperature sensor commands via wireless signal.

[0037] Distributor box 13: Material selection: Aluminum alloy sheet (5052-H32), thickness 1.5-2mm, formed by bending and welding; Selection criteria: The components must fit snugly against the outer wall of the annular support frame 2, with precise connection between the air guide holes and the air inlet holes 5. The 5052-H32 aluminum alloy has good bending performance (minimum bending radius 1.5 times the plate thickness), ensuring a good fit between the inner wall and the annular support frame 2 (gap ≤ 0.5mm). The welded joints are polished, resulting in a smooth inner wall (roughness Ra ≤ 3.2μm) to reduce wind resistance. The air guide holes (diameter 8-12mm) are machined to correspond to the positions of the air inlet holes 5 on the annular support frame 2, ensuring efficient airflow. The metal material also has thermal conductivity, which can assist in heat dissipation.

[0038] Adapter tube 15 / Air inlet tube 17: Selection: Seamless aluminum alloy tube (6063-T5), outer diameter 25-35mm, wall thickness 1.5-2mm; Selection criteria: It needs to connect the cooling fan 16 and the distribution box 13 (adapter tube 15) and guide external air (air inlet tube 17). The 6063-T5 aluminum alloy seamless tube has a smooth inner wall (roughness Ra≤1.6μm) and low wind resistance. The adapter tube 15 has flanges (2mm thick) welded at both ends and is fixed to the air outlet of the cooling fan 16 and the upper end of the distribution box 13 with screws. The top of the air inlet tube 17 is machined with internal threads (to match the second ring frame 18) and the surface is anodized (film thickness 5-8μm) for corrosion protection, suitable for long-term airflow scouring scenarios.

[0039] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0040] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0041] 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.

Claims

1. An automotive generator assembly, comprising a housing and a base (1), characterized in that: The housing includes an annular support frame (2), with two cylindrical bodies (3) symmetrically arranged on both sides of the annular support frame (2). The outer end of the cylindrical body (3) is provided with a detachable end cap (12), and the annular support frame (2) is fixed to the upper end of the base (1). The cylinder (3) is provided with multiple heat dissipation holes (4). Two detachable first annular frames (6) are symmetrically arranged on both sides of the annular support frame (2). The first annular frame (6) is penetrated by the cylinder (3), and the inner wall of the first annular frame (6) is attached to the outer wall of the cylinder (3). The first annular frame (6) is provided with a slot (7). A first dustproof net (8) is provided in the slot (7). The two ends of the first dustproof net (8) are glued and fixed in the slot (7). Multiple arc-shaped support plates (9) are fixedly arranged in the slot (7). The multiple arc-shaped support plates (9) are all located inside the first dustproof net (8). The ring support frame (2) is equipped with a ventilation component, and the automobile generator assembly is equipped with a temperature sensor. The temperature sensor and the ventilation component are connected wirelessly.

2. The automotive generator assembly according to claim 1, characterized in that: The annular support frame (2) and the cylinder (3) are an integrated structure.

3. The automotive generator assembly according to claim 2, characterized in that: Multiple limiting rods (10) are fixedly installed on the inner wall of the first ring frame (6), and multiple limiting grooves (11) are provided on the outer wall of the cylinder (3). The limiting rods (10) are inserted into the limiting grooves (11) and fit tightly with the limiting grooves (11).

4. The automotive generator assembly according to claim 3, characterized in that: The two sides of the first ring frame (6) respectively contact the outer side of the ring support frame (2) and the inner side of the end cap (12), and the two sides of the first ring frame (6) are tightly fitted to the outer side of the ring support frame (2) and the inner side of the end cap (12).

5. The automotive generator assembly according to claim 4, characterized in that: The annular support frame (2) is provided with multiple air inlets (5). The ventilation assembly includes a cooling fan (16) and a distribution box (13). The inner wall of the distribution box (13) is attached to the outer wall of the annular support frame (2), and base plates (14) are fixed at both ends of the distribution box (13). The base plates (14) are fixed to the upper end of the base (1) by screws. The inner side of the distribution box (13) is provided with multiple guide holes communicating with the air inlets (5). The cooling fan (16) is located on the annular support frame (2). Above, the outlet end of the cooling fan (16) is fixedly provided with an adapter tube (15), the adapter tube (15) is fixed at the upper end of the distribution box (13), and the adapter tube (15) is connected to the distribution box (13). The inlet end of the cooling fan (16) is fixedly provided with an air inlet tube (17), and the top end of the air inlet tube (17) is fastened with a second ring frame (18). The second ring frame (18) is threadedly connected to the air inlet tube (17), and the inner ring of the second ring frame (18) is fixedly provided with a second dustproof net (19).

6. The automotive generator assembly according to claim 5, characterized in that: The diversion box (13), the adapter tube (15), the air inlet tube (17), the second ring frame (18), and the first ring frame (6) are all made of metal.

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