A range extender flywheel with heat dissipation function

Abstract

This utility model belongs to the field of range extender flywheels, specifically a range extender flywheel with heat dissipation function, including a flywheel body and an inner hub. The inner hub is disposed at the inner end of a groove in the flywheel body. A shock absorber is fixedly connected in an annular groove between the flywheel body and the inner hub. The outer end of the flywheel body has annularly distributed heat dissipation holes, and the inner end of each heat dissipation hole is provided with an air guide groove. Through the structural design of the heat dissipation holes, when the flywheel body rotates, centrifugal force pushes air out of the hollow cavity through the heat dissipation holes, forming an active airflow path from the inside to the outside, enhancing natural convection heat dissipation. Furthermore, the multiple air guide grooves opened at the inner end of the heat dissipation holes allow the airflow to flow more smoothly and evenly, increasing air convection conduction, forming negative pressure, attracting fresh air to replenish the cavity, thereby forming gas flow, achieving active heat dissipation, and improving the heat dissipation effect of the range extender flywheel.

Description

Technical Field

[0001] This utility model relates to the field of flywheels for range extenders, specifically a flywheel for a range extender with heat dissipation function. Background Technology

[0002] A range extender is a device that serves as an auxiliary generator in a hybrid vehicle, while the flywheel system plays an important role in stabilizing engine speed and storing energy.

[0003] Chinese patent application number CN201821593528.4 provides a transmission assembly for a range extender engine. This solution arranges multiple flywheel bolt holes evenly around the center hole, and the flywheel bolt holes are countersunk holes, which do not occupy the space between the flywheel bolts and the torque limiter, thus maintaining a sufficient gap between the flywheel bolts and the torque limiter. Furthermore, this transmission assembly is simple to assemble, has a stable structure and high strength, and effectively improves the stability of the entire unit.

[0004] Traditional flywheel structures are mostly solid structures. However, during high-load and high-speed operation, the flywheel body generates a lot of heat due to continuous friction and rotation. If heat cannot be dissipated in a timely and effective manner, it can easily lead to flywheel deformation, bearing wear, or even system failure. Therefore, a range extender flywheel with heat dissipation function is proposed to address the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, traditional flywheel structures are mostly solid structures. However, during high-load and high-speed operation, the flywheel body generates a lot of heat due to continuous friction and rotation. If heat cannot be dissipated in a timely and effective manner, it can easily lead to flywheel deformation, bearing wear, or even system failure. This utility model proposes a range extender flywheel with heat dissipation function.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a range extender flywheel with heat dissipation function, including a flywheel body and an inner hub; the inner hub is disposed in the inner end of the groove of the flywheel body, a shock absorber is fixedly connected in the annular groove between the flywheel body and the inner hub, heat dissipation holes are distributed in an annular pattern on the outer end of the flywheel body, and air guide grooves are opened at the inner end of each heat dissipation hole. The air guide grooves are distributed in an annular pattern. By setting heat dissipation holes, the heat dissipation effect of the range extender flywheel is improved.

[0007] Preferably, an internal spline is fixedly connected to the rear side of the inner wall of the central shaft hole of the inner hub. By installing the internal spline, the structural fit of the flywheel can be improved.

[0008] Preferably, the inner wall of the central shaft hole of the inner hub is provided with annularly distributed guide holes. By providing guide holes, the heat conduction effect of the flywheel can be further improved.

[0009] Preferably, the inner end of the inner hub is provided with a slot, and the outer side of the slot is provided with a flywheel bolt hole. The flywheel bolt holes are arranged in a ring. By installing the slot and the flywheel bolt holes, the inner hub and the flywheel body can be easily assembled or installed.

[0010] Preferably, the outer end of the flywheel body is provided with symmetrically distributed holes II, which improves rotational stability.

[0011] Preferably, the outer end of the shock absorber is provided with a guide groove, which further improves the heat conduction effect of the flywheel structure.

[0012] Preferably, a heat dissipation layer is provided at the outer end of the flywheel body, which can improve the performance of the flywheel.

[0013] Preferably, a heat-conducting layer is provided at the outer end of the inner hub, and a protective structure can be formed on the outside of the inner hub by providing the heat-conducting layer.

[0014] The advantages of this utility model are:

[0015] 1. This utility model, through its structural design with heat dissipation holes, allows the flywheel body to rotate, and centrifugal force pushes air outward from the hollow cavity through the heat dissipation holes, forming an active airflow path from the inside to the outside, enhancing natural convection heat dissipation. Furthermore, the multiple air guide slots opened at the inner end of the heat dissipation holes allow the airflow to pass more smoothly and evenly, increasing air convection conduction, forming negative pressure, attracting fresh air to replenish the cavity, thereby forming gas flow, achieving active heat dissipation, and improving the heat dissipation effect of the range extender flywheel.

[0016] 2. Through the structural design of the guide groove, the shock absorber is usually a ring-shaped elastic structure, which can effectively absorb the torsional vibration and impact load during the rotation of the flywheel. Multiple guide grooves are opened at the inner end of the shock absorber. The shock absorber will generate a certain amount of heat during the process of absorbing energy. The guide groove increases the surface area and enhances air convection, effectively removing heat and further improving the heat conduction effect of the flywheel structure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a rear view schematic diagram of the flywheel body structure of this utility model;

[0020] Figure 3 This is a side-view perspective three-dimensional structural diagram of the flywheel body of this utility model;

[0021] Figure 4 For the present utility model Figure 1 A magnified three-dimensional structural diagram at point A in the middle;

[0022] Figure 5 For the present utility model Figure 1 A magnified three-dimensional structural diagram of point B in the middle.

[0023] In the diagram: 1. Flywheel body; 2. Inner hub; 3. Slot; 4. Flywheel bolt hole; 5. Hole 2; 6. Inner spline; 7. Heat dissipation through hole; 8. Air guide groove; 9. Shock absorber; 10. Air guide groove; 11. Heat dissipation layer; 12. Air guide hole; 13. Heat conduction layer. Detailed Implementation

[0024] 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 scope of protection of the present utility model.

[0025] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0026] This application discloses a range extender flywheel with heat dissipation function. (Refer to...) Figures 1-5 A range extender flywheel with heat dissipation function includes a flywheel body 1 and an inner hub 2. The inner hub 2 is disposed in the groove of the flywheel body 1. A shock absorber 9 is fixedly connected in the annular groove between the flywheel body 1 and the inner hub 2. The outer end of the flywheel body 1 has heat dissipation holes 7 distributed in an annular pattern. The inner end of each heat dissipation hole 7 is provided with an air guide groove 10. The air guide grooves 10 are distributed in an annular pattern. By setting the heat dissipation holes 7, when the flywheel body 1 rotates, the centrifugal force pushes the air from the hollow cavity to the outside through the heat dissipation holes 7, forming an active airflow path from the inside to the outside, enhancing natural convection heat dissipation. Furthermore, the multiple air guide grooves 10 opened at the inner end of the heat dissipation holes 7 allow the airflow to flow more smoothly and evenly, which can increase air convection conduction, form negative pressure, attract new air to replenish the cavity, thereby forming gas flow, realizing active heat dissipation, and improving the heat dissipation effect of the range extender flywheel.

[0027] Reference Figure 1 and Figure 2 An internal spline 6 is fixedly connected to the rear side of the inner wall of the central shaft hole of the inner hub 2. By installing the internal spline 6, the internal spline 6 meshes with the external spline on the drive shaft or crankshaft, ensuring that the flywheel can be reliably installed on the output shaft of the range extender, so that the torque transmission between the flywheel and the output shaft can proceed smoothly, and improving the structural fit effect of the flywheel.

[0028] Reference Figure 1 and- Figure 3 The inner wall of the central shaft hole of the inner hub 2 is provided with a ring-shaped distribution of guide holes 12. By setting the guide holes 12, the weight of the flywheel can be reduced relatively without affecting the structural strength of the flywheel. Furthermore, the setting of the guide holes 12 increases the air circulation path inside the flywheel, which helps heat to be conducted from the inside of the flywheel to the external environment more quickly, thereby preventing local overheating of the flywheel and further improving the heat conduction effect of the flywheel.

[0029] Reference Figure 1 and Figure 3 The inner end of the inner hub 2 is provided with a slot 3, and the outer side of the slot 3 is provided with a flywheel bolt hole 4. The flywheel bolt holes 4 are arranged in a ring. By installing the slot 3 and the flywheel bolt holes 4, the inner hub 2 and the flywheel body 1 can be easily assembled or installed.

[0030] Reference Figure 1 The flywheel body 1 has symmetrically distributed holes 5 at its outer end. By setting the holes 5, the holes 5 serve as a counterweight or weight reduction structure, which is usually used to adjust the dynamic balance of the flywheel and improve rotational stability.

[0031] Reference Figures 1-3 The outer end of the shock absorber 9 is provided with a guide groove 8. By setting the guide groove 8, the shock absorber 9 is usually a ring-shaped elastic structure, which can effectively absorb the torsional vibration and impact load during the rotation of the flywheel. Multiple guide grooves 8 are opened at the inner end of the shock absorber 9. The shock absorber 9 will generate a certain amount of heat during the process of absorbing energy. The guide groove 8 increases the surface area and enhances air convection, effectively removing heat and further improving the heat conduction effect of the flywheel structure.

[0032] Reference Figure 1 and Figure 2 The flywheel body 1 has a heat dissipation layer 11 at its outer end. The heat dissipation layer 11 is an anodized heat dissipation coating. The anodized coating has a high thermal emissivity, which enhances the flywheel surface’s ability to radiate heat to the outside. It can also effectively improve the flywheel surface’s scratch resistance, impact resistance, and peel resistance, providing better surface protection under harsh working conditions and improving the flywheel’s performance.

[0033] Reference Figure 1 and Figure 2 A heat-conducting layer 13 is provided at the outer end of the inner hub 2. The heat-conducting layer 13 is made of the same material as the heat dissipation layer 11, and a protective structure can be formed on the outside of the inner hub 2.

[0034] Working principle: When the flywheel is in use, a heat dissipation layer 11 and a heat conduction layer 13 are provided on the outside of the flywheel body 1 and the inner hub 2. The heat dissipation layer 11 and the heat conduction layer 13 are anodized heat dissipation coatings. The anodized coating has a high thermal emissivity, which enhances the flywheel surface’s ability to radiate heat to the outside and effectively improves the flywheel surface’s scratch resistance, impact resistance, and peel resistance, providing better surface protection under harsh working conditions.

[0035] When the flywheel rotates, centrifugal force pushes air out of the hollow cavity through the heat dissipation holes 7, forming an active airflow path from the inside to the outside, enhancing natural convection heat dissipation. Furthermore, the multiple air guide slots 10 opened at the inner end of the heat dissipation holes 7 allow the airflow to pass more smoothly and evenly, increasing air convection conduction, forming negative pressure, attracting new air to replenish the cavity, thereby forming gas flow and achieving active heat dissipation. Without affecting the structural strength of the flywheel, the reasonable arrangement of the air guide holes 12 can reduce the mass of the flywheel. Moreover, the setting of the air guide holes 12 increases the airflow path inside the flywheel, which helps heat to be conducted from the inside of the flywheel to the external environment more quickly, thereby preventing local overheating of the flywheel.

[0036] The shock absorber 9 is usually a ring-shaped elastic structure, which can effectively absorb the torsional vibration and impact load during the rotation of the flywheel. Multiple guide grooves 8 are opened at the inner end of the shock absorber 9. The shock absorber 9 will generate a certain amount of heat during the process of absorbing energy. The guide grooves 8 increase the surface area and enhance air convection, effectively removing the heat.

[0037] The contents not described in detail in this specification do not improve upon this application and are all prior art known to those skilled in the art, and therefore are not described in detail.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A range extender flywheel with heat dissipation function, characterized in that: It includes a flywheel body (1) and an inner hub (2); the inner hub (2) is located at the inner end of the groove of the flywheel body (1), and a shock absorber (9) is fixedly connected in the annular groove between the flywheel body (1) and the inner hub (2). The outer end of the flywheel body (1) has heat dissipation holes (7) distributed in an annular pattern, and the inner end of each heat dissipation hole (7) is provided with an air guide groove (10), which is distributed in an annular pattern.

2. The range extender flywheel with heat dissipation function according to claim 1, characterized in that: An internal spline (6) is fixedly connected to the rear side of the inner shaft hole of the inner hub (2).

3. The range extender flywheel with heat dissipation function according to claim 2, characterized in that: The inner wall of the central shaft hole of the inner hub (2) is provided with a ring-shaped distribution of guide holes (12).

4. The range extender flywheel with heat dissipation function according to claim 3, characterized in that: The inner end of the inner hub (2) is provided with a slot (3), and the outside of the slot (3) is provided with a flywheel bolt hole (4), which is distributed in a ring.

5. The range extender flywheel with heat dissipation function according to claim 1, characterized in that: The flywheel body (1) has symmetrically distributed holes (5) at its outer end.

6. The range extender flywheel with heat dissipation function according to claim 1, characterized in that: The outer end of the shock absorber (9) is provided with a guide groove (8).

7. The range extender flywheel with heat dissipation function according to claim 1, characterized in that: A heat dissipation layer (11) is provided at the outer end of the flywheel body (1).

8. The range extender flywheel with heat dissipation function according to claim 7, characterized in that: A heat-conducting layer (13) is provided at the outer end of the inner hub (2).

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