High-efficiency heat dissipation type automobile generator stator winding structure

Abstract

The invention relates to the technical field of automobile generators, and mainly relates to an efficient heat dissipation type automobile generator stator winding structure which comprises a generator shell used for installing a generator stator winding. The wind collecting shell is fixed to one end of the generator shell, a wind collecting part is arranged in the wind collecting shell, and heat dissipation airflow is collected through the wind collecting part; the automobile generator comprises a wind collecting shell, a transmission part and an air cooling part, one end of the air cooling part communicates with the interior of the wind collecting shell, a liquid suction part is installed on the top of the wind collecting shell, and a cooling liquid box is fixed to the bottom of the wind collecting shell. The cooling liquid in the cooling liquid box is sucked into the cooling part, so that gas entering the air collecting shell is in indirect contact with the low-temperature cooling liquid, the temperature of airflow is reduced, the temperature of air blown to the generator stator winding by the air cooling part is reduced, and the cooling effect is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive generator technology, specifically to a high-efficiency heat dissipation automotive generator stator winding structure. Background Technology

[0002] As a core component of a vehicle's electrical system, the alternator is responsible for supplying power to various electrical devices and charging the battery when the engine is running. During operation, the stator windings generate a significant amount of heat due to the flow of current. Excessive heat not only reduces the alternator's power generation efficiency but also accelerates the aging of the winding insulation materials, shortening the alternator's lifespan and potentially causing malfunctions that affect the vehicle's normal operation.

[0003] Currently, forced air cooling is the primary heat dissipation method for automotive alternators. Centrifugal fans are typically installed at both ends of the alternator rotor shaft, rotating synchronously with the rotor. This rotation generates centrifugal force, drawing in cool external air through the air inlets of the alternator housing (usually located on the side or rear end cover). The airflow travels at high speed along the gaps between the stator and housing, and between the stator and rotor, directly scouring the stator core and winding surfaces. Ultimately, carrying heat, it is expelled through the air outlets of the housing (usually located on the front or side cover). However, when the automotive alternator operates in a high-temperature environment, the air blown by the fans to the stator windings during operation often becomes hot air due to the increased ambient temperature. This hot air not only fails to effectively remove the heat generated by the stator windings but also further exacerbates the temperature rise of the stator windings due to its own high temperature, resulting in very poor heat dissipation and failing to meet the heat dissipation requirements for normal alternator operation. Summary of the Invention

[0004] The purpose of this invention is to provide a high-efficiency heat-dissipating automotive generator stator winding structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency heat dissipation automotive generator stator winding structure, including a generator housing for mounting the generator stator winding; further comprising: an air collecting shell fixed to one end of the generator housing, the air collecting shell having an air collecting section inside for collecting heat dissipation airflow; an air cooling section, one end of which is connected to the interior of the air collecting shell, a liquid suction section installed on the top of the air collecting shell, a coolant tank fixed to the bottom of the air collecting shell, the liquid suction section for circulating and drawing coolant from the coolant tank, and a cooling section connected to the bottom of the liquid suction section; and a transmission section located on the outside of the air collecting shell and connected to the cooling section via the liquid suction section.

[0006] Preferably, the air collecting unit includes a rotor connecting shaft, one end of which is fixed to the generator rotor. The rotor connecting shaft and the air collecting housing are rotatably connected by a bearing. A fan is fixedly sleeved on the outside of the rotor connecting shaft. The fan is located inside the air collecting housing. The input end of the transmission unit is fixedly connected to the rotor connecting shaft.

[0007] Preferably, the air-cooling section includes a plurality of air outlet pipes arranged in a ring array, one end of the air outlet pipes being connected to the interior of the air collecting shell, and the air outlet pipes having a first air outlet hole evenly opened on the side facing the generator stator winding.

[0008] Preferably, the liquid suction part includes a sealing shell fixed to the top of the air collecting shell, a piston plate slidably connected inside the sealing shell, a reciprocating rod threadedly connected to the middle of the piston plate, both ends of the reciprocating rod being rotatably connected to the sealing shell, a liquid suction pipe connected between the sealing shell and the coolant tank, a cooling part disposed between the sealing shell and the coolant tank, and the output end of the transmission part being drively connected to the reciprocating rod.

[0009] Preferably, the cooling section includes a serpentine tube located at the rear of the fan, with its top end connected to the sealing shell and its bottom end connected to the coolant tank.

[0010] Preferably, the transmission unit includes a drive gear fixedly sleeved to the outside of the rotor connecting shaft, a transmission gear meshing with the top of the drive gear, and one end of the central shaft of the transmission gear fixedly connected to the reciprocating rod.

[0011] Preferably, an air inlet pipe is fixedly connected to the upper left side of the sealing shell via a one-way valve, and an air blowing pipe is also fixedly connected to the left side wall of the sealing shell via a one-way valve. The bottom of the air blowing pipe has multiple second air outlet holes.

[0012] Preferably, air inlets are evenly distributed on the left side wall of the air collecting shell, and each air inlet is equipped with a filter screen.

[0013] Preferably, the diameter of the drive gear is four times the diameter of the transmission gear, and the drive gear has multiple through slots.

[0014] Preferably, a cooling plate is provided at the bottom of the coolant tank, with the cooling end of the cooling plate facing upwards.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention optimizes the heat dissipation method for the stator windings of an automotive generator. When the automotive generator is working, external air is drawn into the air collection housing through the air collection section, and the transmission section drives the liquid suction section to work, drawing the coolant in the coolant tank into the cooling section. This indirectly brings the gas entering the air collection housing into contact with the low-temperature coolant, reducing the temperature of the airflow. As a result, the temperature of the air blown by the air-cooling section onto the generator stator windings is reduced, improving the cooling effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle; Figure 3 This is a schematic diagram of the air collecting section and air cooling section of the present invention; Figure 4 This is a schematic diagram of the liquid absorption section and cooling section of the present invention; Figure 5 This is a schematic diagram of the transmission part structure of the present invention; Figure 6 This is a schematic diagram of the liquid absorption part of the present invention from another angle; Figure 7 This is a schematic diagram of the sealing shell of the present invention from another angle; Figure 8 This is a side view of the air collector shell of the present invention.

[0017] In the diagram: 1. Generator housing; 2. Air collector housing; 3. Air collection section; 4. Air-cooled section; 5. Liquid suction section; 6. Coolant tank; 7. Cooling section; 8. Transmission section; 9. Rotor connecting shaft; 10. Fan; 11. Air outlet pipe; 12. First air outlet; 13. Sealing shell; 14. Piston plate; 15. Reciprocating rod; 16. Liquid suction pipe; 17. Serpentine pipe; 18. Drive gear; 19. Transmission gear; 20. Air inlet pipe; 21. Air blowing pipe; 22. Second air outlet; 23. Air inlet; 24. Filter screen; 25. Through slot; 26. Cooling element. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figure 1 and Figure 2The high-efficiency heat dissipation automotive generator stator winding structure shown in the figure includes a generator housing 1 for mounting the generator stator winding; it also includes: an air collecting shell 2 fixed to one end of the generator housing 1, the air collecting shell 2 having an air collecting section 3 inside for collecting heat dissipation airflow; an air cooling section 4, one end of which is connected to the interior of the air collecting shell 2, a liquid suction section 5 installed on the top of the air collecting shell 2, a coolant tank 6 fixed to the bottom of the air collecting shell 2, the liquid suction section 5 for circulating and sucking coolant in the coolant tank 6, and a cooling section 7 connected to the bottom of the liquid suction section 5; and a transmission section 8, which is located on the outside of the air collecting shell 2 and is connected to the air collecting shell 2 via the liquid suction section 5. In this design, when the car generator is working, external air is drawn into the air collection housing 2 through the air collection unit 3, and the transmission unit 8 drives the liquid suction unit 5 to work, drawing the coolant in the coolant tank 6 into the cooling unit 7. This indirectly brings the gas entering the air collection housing 2 into contact with the low-temperature coolant, reducing the temperature of the airflow. This lowers the temperature of the air blown by the air-cooling unit 4 onto the generator stator windings, improving the cooling effect. Therefore, the heat dissipation effect will not deteriorate due to excessively high external gas temperature.

[0020] For further details, please refer to [link / reference]. Figure 3 The air collecting part 3 includes a rotor connecting shaft 9, one end of which is fixed to the generator rotor. The rotor connecting shaft 9 and the air collecting shell 2 are rotatably connected by bearings. A fan 10 is fixedly sleeved on the outside of the rotor connecting shaft 9. The fan 10 is located inside the air collecting shell 2. The input end of the transmission part 8 is fixedly connected to the rotor connecting shaft 9.

[0021] Specifically, when the generator rotor rotates, it will drive the rotor connecting shaft 9 to rotate together. The rotor connecting shaft 9 drives the fan 10 to rotate. The fan 10 draws in external air from the air inlet 23 of the generator housing into the air collector 2. At this time, the transmission unit 8 will drive the liquid suction unit 5 to work, circulating coolant in the air flow path, thereby indirectly reducing the air temperature.

[0022] It should also be noted that, see reference Figure 8 In order to facilitate the passage of airflow, air inlets 23 are evenly provided on the left side wall of the air inlet shell 2. Each air inlet 23 is provided with a filter screen 24. The filter screen 24 is designed to filter the incoming airflow and prevent dust from being brought into the generator housing.

[0023] For further details, please refer to [link / reference]. Figure 3 The air-cooling section 4 includes a plurality of air outlet pipes 11 arranged in a ring array. One end of the air outlet pipe 11 is connected to the inside of the air collection shell 2. The air outlet pipe 11 has a first air outlet hole 12 evenly opened on the side facing the generator stator winding.

[0024] Specifically, the airflow that has been cooled by the liquid absorption section 5 will enter the air outlet 11 and be discharged from the first air outlet 12, blowing air onto the surface of the generator stator winding, thereby achieving uniform heat dissipation and cooling.

[0025] For further details, please refer to [link / reference]. Figure 4 The liquid suction part 5 includes a sealing shell 13 fixed to the top of the air collecting shell 2. A piston plate 14 is slidably connected inside the sealing shell 13. A reciprocating rod 15 is threadedly connected to the middle of the piston plate 14. Both ends of the reciprocating rod 15 are rotatably connected to the sealing shell 13. A liquid suction pipe 16 is connected between the sealing shell 13 and the coolant tank 6. The cooling part 7 is located between the sealing shell 13 and the coolant tank 6. The output end of the transmission part 8 is connected to the reciprocating rod 15 in a transmission manner. Among them, see Figure 4 The cooling section 7 includes a serpentine tube 17 located at the rear of the fan 10. The top end of the serpentine tube 17 is connected to the sealing shell 13, and its bottom end is connected to the coolant tank 6.

[0026] In this design, the transmission unit 8 drives the reciprocating rod 15 to rotate, and the reciprocating rod 15 drives the piston plate 14 to move back and forth, thereby circulating and pumping the coolant in the coolant tank 6 into the sealing shell 13. The coolant will then enter the serpentine tube 17. By utilizing the long pipe characteristics of the serpentine tube 17, the air surface in indirect contact with its outer surface is increased, thereby quickly reducing the airflow temperature.

[0027] It should also be noted that, see reference Figure 4 The coolant tank 6 is equipped with a cooling plate 26 at the bottom, with the cooling end of the cooling plate 26 facing upwards, to cool the coolant in the coolant tank 6, thereby ensuring that the coolant tank 6 entering the serpentine tube 17 is in a low-temperature state and improving the efficiency of the serpentine tube 17 in cooling the air.

[0028] Further reading Figure 5 The transmission part 8 includes a drive gear 18 that is fixedly sleeved on the outside of the rotor connecting shaft 9. The top of the drive gear 18 is meshed with a transmission gear 19, and one end of the central shaft of the transmission gear 19 is fixedly connected to the reciprocating rod 15. In this scheme, the rotational motion of the rotor connecting shaft 9 will synchronously drive the drive gear 18 to rotate, which in turn drives the transmission gear 19 to rotate, and finally drives the reciprocating rod 15 to rotate synchronously, so that the circulating liquid suction action and the air intake action are kept synchronized. It should also be noted that, see reference Figure 5In order to increase the rotational speed of the reciprocating rod 15 and ensure that coolant can be quickly introduced into the serpentine tube 17, the diameter of the drive gear 18 is four times the diameter of the transmission gear 19. The drive gear 18 is provided with multiple through slots 25, and the designed through slots 25 can reduce the weight of the drive gear 18 and reduce the transmission load.

[0029] Example 2: Please refer to Figure 6 and Figure 7 This embodiment further explains the first embodiment, and the difference lies in the optimization of the structure of the sealing shell 13.

[0030] Specifically, an air inlet pipe 20 is fixedly connected to the upper left side of the sealing shell 13 via a one-way valve, and an air blowing pipe 21 is also fixedly connected to the left side wall of the sealing shell 13 via a one-way valve. The bottom of the air blowing pipe 21 is provided with multiple second air outlet holes 22.

[0031] In this design, the left side of the piston plate 14 inside the sealing housing 13 is in a non-liquid inlet space. When the piston plate 14 moves from left to right, it draws air into the sealing housing 13 through the intake pipe 20. When the piston plate 14 moves from right to left, it discharges the drawn-in air through the blow pipe 21 and finally blows it onto the pulley of the generator through multiple second air outlets 22. This cleans the pulley that transmits power between the engine and the car generator, preventing excessive dust and impurities from adsorbing on the inner side of the pulley and affecting the transmission accuracy.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. High-efficiency heat dissipation automotive generator stator winding structure, including: Generator housing (1) for mounting generator stator windings; Its characteristic is that it further includes: A collector shell (2) is fixed at one end of the generator housing (1). The collector shell (2) has an air collecting section (3) inside, through which the heat dissipation airflow is collected. The air-cooling section (4) has one end connected to the interior of the air-collecting shell (2). The top of the air-collecting shell (2) is equipped with a liquid suction section (5), and the bottom of the air-collecting shell (2) is fixed with a coolant tank (6). The liquid suction section (5) is used to circulate and draw coolant from the coolant tank (6), and the bottom of the liquid suction section (5) is connected to a cooling section (7). The transmission part (8) is located on the outside of the air collecting shell (2) and is connected to the liquid suction part (5) via transmission.

2. The high-efficiency heat dissipation type automotive generator stator winding structure according to claim 1, characterized in that: The air collecting part (3) includes a rotor connecting shaft (9), one end of which is fixed to the generator rotor. The rotor connecting shaft (9) and the air collecting shell (2) are rotatably connected by bearings. A fan (10) is fixedly sleeved on the outside of the rotor connecting shaft (9). The fan (10) is located inside the air collecting shell (2). The input end of the transmission part (8) is fixedly connected to the rotor connecting shaft (9).

3. The high-efficiency heat dissipation type automotive generator stator winding structure according to claim 1, characterized in that: The air-cooled section (4) includes a plurality of air outlet pipes (11) arranged in a ring array. One end of the air outlet pipe (11) is connected to the interior of the air collection shell (2). The air outlet pipe (11) has a first air outlet hole (12) evenly opened on the side facing the generator stator winding.

4. The high-efficiency heat dissipation type automotive generator stator winding structure according to claim 2, characterized in that: The liquid suction part (5) includes a sealing shell (13) fixed on the top of the air collecting shell (2). A piston plate (14) is slidably connected inside the sealing shell (13). A reciprocating rod (15) is threadedly connected to the middle of the piston plate (14). Both ends of the reciprocating rod (15) are rotatably connected to the sealing shell (13). A liquid suction pipe (16) is connected between the sealing shell (13) and the coolant tank (6). The cooling part (7) is located between the sealing shell (13) and the coolant tank (6). The output end of the transmission part (8) is connected to the reciprocating rod (15) in a transmission manner.

5. The high-efficiency heat dissipation type automotive generator stator winding structure according to claim 4, characterized in that: The cooling section (7) includes a serpentine tube (17) located at the rear of the fan (10). The top end of the serpentine tube (17) is connected to the sealing shell (13), and its bottom end is connected to the coolant tank (6).

6. The high-efficiency heat dissipation type automotive generator stator winding structure according to claim 4, characterized in that: The transmission unit (8) includes a drive gear (18) that is fixedly sleeved on the outside of the rotor connecting shaft (9). The top of the drive gear (18) is meshed with a transmission gear (19). One end of the central shaft of the transmission gear (19) is fixedly connected to the reciprocating rod (15).

7. The high-efficiency heat dissipation type automotive generator stator winding structure according to claim 5, characterized in that: An air inlet pipe (20) is fixedly connected to the upper left side of the sealing shell (13) via a one-way valve. An air blowing pipe (21) is also fixedly connected to the left side wall of the sealing shell (13) via a one-way valve. Multiple second air outlet holes (22) are provided at the bottom of the air blowing pipe (21).

8. The high-efficiency heat dissipation type automotive generator stator winding structure according to claim 1, characterized in that: The air inlet (23) is evenly provided on the left side wall of the air collecting shell (2), and each air inlet (23) is provided with a filter screen (24).

9. The high-efficiency heat dissipation type automotive generator stator winding structure according to claim 6, characterized in that: The diameter of the drive gear (18) is four times the diameter of the transmission gear (19), and the drive gear (18) has multiple through slots (25).

10. The high-efficiency heat dissipation type automotive generator stator winding structure according to claim 1, characterized in that: The coolant tank (6) is equipped with a cooling plate (26) at the bottom, with the cooling end of the cooling plate (26) facing upwards.

Images