A heat dissipation structure suitable for an automobile generator
By combining air and liquid circulation cooling with a conductive heat dissipation system, the problem of insufficient heat dissipation of automotive generators under high load or high temperature environments is solved, achieving continuous and efficient heat dissipation and extending the service life and performance of the generator.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI BENTLEY MOTORS ELECTRIC CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-14
AI Technical Summary
Existing automotive alternator cooling structures are unable to effectively dissipate all heat under high load or high temperature conditions, leading to excessively high temperatures that affect performance and lifespan.
The conductive heat dissipation system, which consists of components such as a heat dissipation frame, heat dissipation fan, cooler, diffuser shell, fins, heat dissipation silicone, liquid collection tank, liquid pump and cold air pipe, achieves efficient heat dissipation through a combination of air and liquid circulation cooling.
It achieves continuous and efficient heat dissipation under high load or high temperature environments, preventing the generator from overheating, extending its service life and improving its performance.
Smart Images

Figure CN224503116U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat dissipation structure technology, and in particular to a heat dissipation structure suitable for automotive generators. Background Technology
[0002] The automotive alternator is one of the core components of the automotive electrical system. It is responsible for charging the battery while the engine is running and providing power to the vehicle's electrical equipment. The automotive alternator generates high temperatures during operation, requiring a heat dissipation structure to cool it down.
[0003] Patent CN220570387U discloses a heat dissipation structure for an automotive alternator. It includes a rear housing of the alternator, made of metal. A front housing of the alternator is located at one outer end of the rear housing, and a second mounting block is located on one side of the outer end face of the front housing. A rotating shaft of the alternator is located at one outer end of the front housing, and a heat sink, a dustproof housing, and a rotating wheel are sequentially arranged on the outer end face of the rotating shaft. When using this patent, the alternator rotates the heat sink, dustproof housing, and rotating wheel via the rotating shaft. Air is drawn into the alternator housing by air guides to dissipate heat. However, this existing patent has some shortcomings in practical use. Because it relies solely on airflow for cooling, under high load or high temperature conditions, this method cannot effectively dissipate all the heat generated by the alternator, leading to excessively high alternator temperatures and affecting its performance and lifespan.
[0004] Therefore, there is a need for a heat dissipation structure suitable for automotive generators that has continuous and efficient heat dissipation capabilities. Utility Model Content
[0005] To overcome the shortcomings of existing patents that rely solely on guiding airflow for cooling, which cannot effectively dissipate all the heat generated by the generator under high load or high temperature conditions, leading to excessively high generator temperature and affecting its performance and lifespan, this utility model provides a heat dissipation structure suitable for automotive generators with continuous and efficient heat dissipation function.
[0006] To address the aforementioned issues, this utility model employs the following technical solution: a heat dissipation structure suitable for automotive generators, comprising a heat dissipation frame and a conductive heat dissipation mechanism. The heat dissipation frame is equipped with the conductive heat dissipation mechanism, and also includes a heat dissipation fan, a cooler, and an expansion shell. The heat dissipation frame is equipped with a heat dissipation fan, the heat dissipation fan is equipped with a cooler, and the cooler is fixedly connected to the expansion shell.
[0007] Optionally, the heat dissipation mechanism includes a mounting plate, fins, and thermal silicone. Two mounting plates are fixedly connected to the heat dissipation frame, and multiple fins are installed between the two mounting plates. Thermal silicone is disposed within the multiple fins.
[0008] Optionally, it also includes a liquid collection tank, a cover, a circulating liquid pipe, a liquid pump, and a cooling pipe. The liquid collection tank is fixedly connected to the heat dissipation frame, the liquid collection tank is covered with a cover, the liquid pump is installed on the liquid collection tank, the circulating liquid pipe is connected to the liquid pump, and a cooling pipe is connected between the circulating liquid pipe and the liquid collection tank.
[0009] Optionally, it also includes an air guide frame, which is fixedly connected to the air diffuser.
[0010] Optionally, it also includes a thermostatic shell and an air inlet pipe, with the thermostatic shell fixedly connected to the cold air pipe and the air inlet pipe connected to the thermostatic shell.
[0011] Optionally, an air inlet is provided on the air intake pipe.
[0012] Compared with the prior art, the present invention has the following technical effects: 1. The heat dissipation mechanism provides initial heat dissipation for the car generator, while the cooler and cooling fan are started at the same time. The cooling fan draws in the outside air and absorbs the heat in the air through the cold end of the cooler to form cold air, which is finally blown onto the car generator, thereby providing continuous and efficient heat dissipation and preventing the car generator from overheating and being damaged.
[0013] 2. Heat exchange occurs between the thermal silicone and the car's alternator, and multiple fins disperse the heat on the thermal silicone, thereby accelerating heat dissipation efficiency.
[0014] 3. By starting the liquid pump, the liquid pump draws coolant from the collection tank and pumps it into the circulating liquid pipe. This allows the circulating liquid pipe to exchange heat with the heat dissipation silicone, causing the heated coolant to enter the air cooling pipe. At the same time, the air intake pipe introduces cool air into the thermostatic housing, thereby cooling the heated coolant. The cooled coolant then returns to the collection tank, thus forming a coolant circulation and enhancing the heat dissipation effect on the car's alternator. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0016] Figure 2 This is a three-dimensional structural diagram of the components of this utility model, including the liquid collection tank, the cover, and the circulating liquid pipe.
[0017] Figure 3 This is a three-dimensional cross-sectional view of the mounting plate, fins, and thermal silicone components of this utility model.
[0018] Figure 4This is a three-dimensional structural diagram of the air guide frame of this utility model.
[0019] Figure 5 This is a three-dimensional structural diagram of the refrigerator of this utility model.
[0020] The meanings of the labels in the attached diagram are as follows: 1: Heat dissipation frame, 2: Heat dissipation fan, 3: Cooler, 4: Expansion shell, 5: Liquid collection tank, 6: Cover, 7: Circulating liquid pipe, 8: Liquid pump, 9: Air inlet pipe, 10: Cold air pipe, 11: Mounting plate, 12: Fins, 13: Thermal silicone, 14: Air guide frame, 15: Constant temperature shell. Detailed Implementation
[0021] 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.
[0022] Example 1: A heat dissipation structure suitable for automotive generators, see [reference]. Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, it includes a heat dissipation frame 1 and a conductive heat dissipation mechanism. The heat dissipation frame 1 is equipped with the conductive heat dissipation mechanism, and also includes a heat dissipation fan 2, a cooler 3 and an expansion shell 4. The heat dissipation fan 2 is installed on the right side of the heat dissipation frame 1 by bolt connection, and the cooler 3 is installed on the left side of the heat dissipation fan 2 by bolt connection. The expansion shell 4 is fixedly connected to the cooler 3 and is located to the right of the conductive heat dissipation mechanism.
[0023] See Figure 1 and Figure 4 As shown, it also includes an air guide frame 14. The air guide frame 14 is installed on the air expansion shell 4 by welding. Under the action of the air guide frame 14, the cold air is guided to ensure heat dissipation efficiency.
[0024] When using this device, first install it on the car, with the car alternator located inside the heat dissipation mechanism. When the car alternator is operating, the heat dissipation mechanism provides initial cooling. At the same time, the cooler 3 and the cooling fan 2 are activated. The cooling fan 2 draws in outside air and absorbs heat from the air through the cold end of the cooler 3 to form cold air. The air guide frame 14 guides the cold air and finally blows it onto the car alternator. The hot end of the cooler 3 diffuses the heat out of the car, thus providing continuous and efficient cooling and preventing the car alternator from overheating and being damaged.
[0025] Example 2: Based on Example 1, refer to Figure 1 and Figure 3 As shown, the heat dissipation mechanism includes a mounting plate 11, fins 12 and heat dissipation silicone 13. The mounting plate 11 is symmetrically arranged on the bottom left side of the heat dissipation frame 1 by welding. Multiple fins 12 are evenly spaced between the two mounting plates 11, and heat dissipation silicone 13 is disposed in the multiple fins 12.
[0026] When the conductive heat dissipation mechanism is used, heat exchange occurs between the thermal silicone 13 and the car generator, and the heat on the thermal silicone 13 is dispersed and dissipated through multiple fins 12, thereby accelerating the heat dissipation efficiency. Furthermore, the cooling effect of the fins 12 is accelerated by the cold air generated by the cooling fan 2 and the cooler 3.
[0027] See Figure 1 and Figure 2 As shown, it also includes a liquid collection tank 5, a cover 6, a circulating liquid pipe 7, a liquid pump 8, and a cooling pipe 10. The liquid collection tank 5 is welded to the upper part of the heat dissipation frame 1. The cover 6 is placed on the liquid collection tank 5. The liquid pump 8 is bolted to the bottom right side of the liquid collection tank 5. The circulating liquid pipe 7 is connected to the liquid pump 8. The circulating liquid pipe 7 passes through the heat dissipation silicone 13. The cooling pipe 10 is connected between the circulating liquid pipe 7 and the liquid collection tank 5.
[0028] See Figure 1 and Figure 2 As shown, it also includes a thermostatic shell 15 and an air inlet pipe 9. The thermostatic shell 15 is fixedly connected to the cold air pipe 10, and the air inlet pipe 9 is connected to the thermostatic shell 15, so as to ensure the cooling effect of the cold air on the coolant in the cold air pipe 10.
[0029] See Figure 2 As shown, an air inlet is opened at the lower end of the air inlet pipe 9 to ensure that the cold air blown out by the cooling fan 2 and the cooler 3 enters the air inlet pipe 9.
[0030] When cooling the car's alternator, the liquid pump 8 is started, which draws coolant from the collection tank 5 and pumps it into the circulation pipe 7. This allows the circulation pipe 7 to exchange heat with the thermal silicone 13, causing the heated coolant to enter the cooling pipe 10. At the same time, the intake pipe 9 draws some of the cool air produced by the cooling fan 2 and the cooler 3 into the thermostatic shell 15, thereby cooling the heated coolant. The cooled coolant then returns to the collection tank 5, thus forming a coolant circulation and enhancing the cooling effect on the car's alternator.
[0031] 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 using the content of this utility model specification, 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 heat dissipation structure suitable for automotive generators, comprising a heat dissipation frame (1) and a conductive heat dissipation mechanism, wherein the heat dissipation frame (1) is provided with the conductive heat dissipation mechanism, characterized in that, It also includes a heat dissipation fan (2), a cooler (3) and an expansion shell (4). The heat dissipation frame (1) is equipped with a heat dissipation fan (2), the heat dissipation fan (2) is equipped with a cooler (3), and the expansion shell (4) is fixedly connected to the cooler (3).
2. A heat dissipation structure suitable for automotive generators according to claim 1, characterized in that, The heat dissipation mechanism includes a mounting plate (11), fins (12) and heat dissipation silicone (13). Two mounting plates (11) are fixedly connected to the heat dissipation frame (1). Multiple fins (12) are installed between the two mounting plates (11), and heat dissipation silicone (13) is provided inside the multiple fins (12).
3. A heat dissipation structure suitable for automotive generators according to claim 2, characterized in that, It also includes a liquid collection tank (5), a cover (6), a circulating liquid pipe (7), a liquid pump (8), and a cooling pipe (10). The liquid collection tank (5) is fixedly connected to the heat dissipation frame (1), the liquid collection tank (5) is covered with a cover (6), the liquid pump (8) is installed on the liquid collection tank (5), the circulating liquid pipe (7) is connected to the liquid pump (8), and the cooling pipe (10) is connected between the circulating liquid pipe (7) and the liquid collection tank (5).
4. A heat dissipation structure suitable for automotive generators according to claim 3, characterized in that, It also includes an air guide frame (14), and the air guide frame (14) is fixedly connected to the air expansion shell (4).
5. A heat dissipation structure suitable for automotive generators according to claim 4, characterized in that, It also includes a thermostatic shell (15) and an air inlet pipe (9). The thermostatic shell (15) is fixedly connected to the cold air pipe (10), and the air inlet pipe (9) is connected to the thermostatic shell (15).
6. A heat dissipation structure suitable for automotive generators according to claim 5, characterized in that, An air inlet is opened on the air intake pipe (9).