High-protection generator

Abstract

The utility model relates to the technical field of generators, in particular to a high-protection generator. A high-protection generator comprises a rear end cover, a stator, a rotor, a fan, a front end cover and a belt pulley, the outer side of the rear end cover is connected with a protective cover, and the protective cover comprises a cover body and an air guide pipe; the cover body comprises a side baffle and a cover plate, one side of the side baffle is connected with the edge of the side, facing the rear end cover, of the cover plate, the other side of the side baffle is connected with the rear end cover, an air inlet and an installation hole are formed in the cover plate, the air inlet is connected with the air guide pipe, and a bolt penetrates through the installation hole to be connected with the rear end cover. According to the utility model, the protective cover is added on the basis of the original air-cooled generator, and the protective cover with the cover and the air guide pipe is optimally designed, so that electronic components arranged on the rear end cover of the generator are protected, and good heat dissipation required by the generator is also considered.

Description

Technical Field

[0001] The utility model relates to the technical field of generators, in particular to a high-protection generator. Background Art

[0002] Generator cooling methods are generally divided into air cooling and liquid cooling. Air-cooled generators utilize the rotation of the generator rotor to drive a connected fan to create air convection, removing heat generated by the generator during operation. This method is generally used more widely, but in harsh operating environments (such as those exposed to dust, mud, and water), the electronic components on the generator's rear end cover may suffer varying degrees of damage. This is primarily due to the impact of these environmental factors on electronic equipment.

[0003] In mildly harsh environments, dust and tiny particles can accumulate on the surfaces of electronic components. This dust can lead to poor heat dissipation, increasing their operating temperature. Over time, this elevated temperature can degrade component performance and even shorten their lifespan. Furthermore, dust accumulation can cause poor contact at electrical connections, leading to intermittent system failures.

[0004] In environments with high levels of dust or moisture, muddy water may splash onto the generator's rear end cover, creating a humid environment. Moisture increases the surface conductivity of electronic components, leading to short circuits or electrical leakage. Chemical components in the muddy water may also corrode the insulation materials of electronic components, further deteriorating their performance.

[0005] In harsh environmental conditions, electronic components can suffer severe mechanical and chemical damage due to the continuous intrusion of muddy water and the accumulation of heavy dust. Particles in the muddy water not only cause mechanical wear but can also lead to more serious corrosion problems, causing complete failure of the insulation layers on circuit boards and components. Prolonged exposure to humid environments can weaken component insulation materials and even cause internal short circuits. Ultimately, this can lead to serious malfunctions or complete failure of the generator, compromising its normal operation.

[0006] To prevent these problems, generators should be designed and used with protection measures for harsh environments in mind. This includes adopting a dustproof and waterproof housing, as well as regular maintenance and cleaning, to ensure the proper operation and long life of electronic components. The patent (application number CN202210585206.X) discloses a dustproof and waterproof automotive AC generator, comprising an outer housing with a dust screen mounted on its outer wall, a movable water baffle mounted on the dust screen, and the AC generator itself housed within the housing. The dust screen is used to reduce the ingress of dust into the housing, while the water baffle shields the dust screen and prevents rainwater from entering the housing. The protection provided by the housing reduces the ingress of dust and rainwater into the AC generator, thereby increasing the generator's service life. However, a completely encased housing cannot adequately dissipate heat during operation. Utility Model Content

[0007] In view of the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a high-protection generator that protects the electronic components arranged on the rear end cover of the generator while taking into account the good heat dissipation required by the generator.

[0008] To achieve the above objectives, the present invention provides the following technical solutions:

[0009] A high-protection generator comprises a rear end cover, a stator, a rotor, a fan, a front end cover and a pulley, wherein the outer side of the rear end cover is connected to a protective cover, and the protective cover comprises a cover body and an air duct;

[0010] The cover body includes a side baffle and a cover plate, one side of the side baffle is connected to the edge of the cover plate facing the rear end cover, and the other side of the side baffle is connected to the rear end cover. An air inlet and a mounting hole are provided on the cover plate, the air inlet is connected to the air duct, and a bolt passes through the mounting hole to connect to the rear end cover.

[0011] As a preferred embodiment of the present invention, a notch is recessed at the connection between the cover plate and the side baffle, one side of the notch is connected to the side baffle, and the other side of the notch is downwardly connected to the partition plate, the notch, the side baffle and the partition plate together form a first installation side window, the partition plate, the cover plate and the side baffle together form a second installation side window, the first installation side window and the second installation side window are separated by the partition plate and arranged left and right, the regulator terminal passes through the first installation side window and extends outward, and the rectifier terminal passes through the second installation side window and extends outward.

[0012] As a preferred embodiment of the present invention, an extension plate is provided at the connection between the partition plate and the first mounting side window protruding inwardly, and the extension plate is arranged between the regulator and the rectifier.

[0013] As a preferred embodiment of the present invention, the partition plate includes a partition part, a corner limit part and an end limit part, one end of the partition part is connected to the extension plate, the other end of the partition part is connected to the longer side of the corner limit part, and the shorter side of the corner limit part is connected to the end limit part.

[0014] As a preferred embodiment of the present invention, the shorter side and the end limiting portion are perpendicular to each other in a horizontal plane.

[0015] As a preferred embodiment of the present invention, the cover plate is provided with internal fasteners on the inner sides of the left and right ends of the second mounting side window, close to the side baffle.

[0016] As a preferred embodiment of the present invention, a third installation side window is provided on the side baffle, and another rectifier terminal passes through the third installation side window and extends outward.

[0017] As a preferred embodiment of the present invention, the side baffle is provided with an inwardly protruding connection reinforcement at the connection with the cover plate.

[0018] As a preferred embodiment of the present invention, the side baffle is matched with the rear end cover and is provided with an arc-shaped matching portion.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] The utility model adds a protective cover on the basis of the original air-cooled generator, optimizes the design of the protective cover with a cover and an air duct, and the cover body is in a fully wrapped form. During air convection, impurities (such as wheat ears, muddy water, and dust) will not be sucked in, and the electronic components placed in the rear end of the generator are well protected, which greatly helps the reliability and life of the motor.

[0021] The air duct is designed to have an independent air intake channel for introducing clean, room-temperature air when an external blower is connected. When the generator is working, it is connected to the air inlet of the protective cover through the vehicle pipe, and clean, room-temperature air is injected into the generator through the pipe. The air forms convection to carry away the heat generated by the generator.

[0022] Therefore, we optimized the design of the partition plate. By dividing the heat dissipation area with the partition plate, cooler air can enter between the protective cover and the rear cover to cool the rectifier and regulator on the rear cover. During cooling, the partition plate separates the two heat dissipation areas, minimizing the cooling process of the rectifier and the regulator from affecting their own cooling process. This alleviates the problem of the air around the rectifier absorbing heat and then flowing into the cooler air around the regulator, which makes it difficult to cool the regulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0024] Figure 1 This is a schematic diagram of the external structure of a high-protection generator of the utility model;

[0025] Figure 2 This is a side view of a high-protection generator of the utility model;

[0026] Figure 3 For this utility model Figure 2 Cross-section at AA;

[0027] Figure 4 This is a structural diagram of a high-protection generator of the utility model without the protective cover;

[0028] Figure 5 This is a schematic diagram of the structure of a protective cover in a high-protection generator of the utility model;

[0029] Figure 6 This is a schematic diagram of a protective cover in a high-protection generator of the utility model from another perspective.

[0030] In the picture:

[0031] Rear end cover, 2. Stator, 3. Rotor, 4. Fan, 5. Front end cover, 6. Pulley, 7. Protective cover, 701. Cover body, 7011. Side baffle, 7012. Cover plate, 70121. Air inlet, 70122. Mounting hole, 70123. Notch, 70124. Internal snap fastener, 7013. Connecting reinforcement, 7014. Arc-shaped matching part, 702. Air guide duct, 703. Partition plate, 7031. Partition, 7032. Corner limiter, 70321. Longer side, 70322. Shorter side, 7033. End limiter, 704. Extension plate, 8. Regulator, 801. Regulator terminal, 9. Rectifier, 901. Rectifier terminal, 100. First installation side window, 200. Second installation side window, 300. Third installation side window. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0033] Refer to the attached Figure 1 To the attached Figure 6As shown, a high-protection generator includes a rear end cover 1, a stator 2, a rotor 3, a fan 4, a front end cover 5, and a pulley 6. A protective cover 7 is connected to the outside of the rear end cover 1. The protective cover 7 includes a cover body 701 and an air duct 702. The air duct 702 is externally connected to a blower. The blower is not shown in the drawings of this application. In existing automobile designs, a blower is typically installed in the vehicle and is an important component of the vehicle's air conditioning and heating systems. The main function of the blower is to draw air from the outside, then heat or cool it through the air conditioning system, and finally deliver the temperature-regulated air into the vehicle to provide a comfortable driving and riding environment. Different types of vehicles may use blowers of different models and powers to meet different needs. The blower blows clean air into the air duct 702 to cool the electronic components on the rear end cover 1 of the generator, and also cools the stator 2 and rotor 3.

[0034] The cover body 701 includes a side baffle 7011 and a cover plate 7012. One side of the side baffle 7011 is connected to the edge of the cover plate 7012 facing the rear end cover 1, and the other side of the side baffle 7011 is connected to the rear end cover 1. An air inlet 70121 and a mounting hole 70122 are provided on the cover plate 7012. The air inlet 70121 is connected to the air duct 702, and the bolts pass through the mounting hole 70122 to connect to the rear end cover 1.

[0035] A notch 70123 is recessed at the connection between the cover plate 7012 and the side baffle 7011. One side of the notch 70123 is connected to the side baffle 7011, and the other side of the notch 70123 is downwardly connected to the partition plate 703. The notch 70123, the side baffle 7011, and the partition plate 703 together form a first installation side window 100. The partition plate 703, the cover plate 7012, and the side baffle 7011 together form a second installation side window 200. The first installation side window 100 and the second installation side window 200 are separated by the partition plate 703 and are arranged left and right. The regulator terminal 801 passes through the first installation side window 100 and extends outward, and the rectifier bridge terminal 901 passes through the second installation side window 200 and extends outward.

[0036] An extension plate 704 protrudes inward from the junction of the partition plate 703 and the first mounting side window 100. This extension plate 704 is positioned between the regulator 8 and the rectifier bridge 9. Generally, the heat generated by the rectifier 9 and regulator 8 connected to the same generator depends on their operating principles and functions. This is because the rectifier 9 needs to handle large currents during operation, and each diode has a certain forward voltage drop, resulting in significant power loss. Especially under heavy loads, the rectifier's heat generation increases significantly. On the other hand, while the regulator 8 also generates heat, it handles relatively small currents and primarily regulates voltage. Therefore, its power consumption and heat generation are generally lower than those of the rectifier 9. Therefore, in general, the rectifier 9 typically generates more heat than the regulator 8, especially under heavy loads. This is because the rectifier 9 directly handles the main current of the generator and incurs significant power losses in each rectifier diode. While the regulator 8 also generates heat, its current handling and power losses are relatively small. This results in different temperature characteristics for the two electronic components, despite their close installation locations. Therefore, the design of the partition plate 703 has been optimized. By dividing the heat dissipation area with the partition plate 703, cooler air can enter between the protective cover 7 and the rear end cover 1 to cool the rectifier 9 and regulator 8 on the rear end cover. During cooling, the partition plate 703 separates two heat dissipation areas, minimizing the cooling process of the rectifier 9 from affecting the cooling process of the regulator 8. Without the partition plate, when cooling the rectifier 9, the air surrounding the rectifier 9 absorbs heat and heats up, then flows towards the cooler air surrounding the regulator 9, making it difficult to cool the regulator 9.

[0037] The partition plate 703 includes a partition portion 7031, a corner stopper portion 7032, and an end stopper portion 7033. One end of the partition portion 7031 is connected to the extension plate 704, the other end of the partition portion 7031 is connected to the longer side 70321 of the corner stopper portion 7032, and the shorter side 70322 of the corner stopper portion 7032 is connected to the end stopper portion 7033. The extension plate further divides the cooling area.

[0038] The shorter side 70322 and the end limiting portion 7033 are perpendicular to each other in a horizontal plane.

[0039] The cover plate 7012 is provided with internal fasteners 70124 on the inner sides of the left and right ends of the second mounting side window 200 , close to the side baffle 7011 , and the internal fasteners 70124 ensure a stable connection between the protective cover 7 and the rear end cover 1 .

[0040] A third installation side window 300 is defined on the side baffle 7011 , and another rectifier bridge terminal 901 passes through the third installation side window 300 and extends outward.

[0041] The side baffle 7011 is provided with an inwardly protruding connection reinforcement 7013 at the connection with the cover plate 7012.

[0042] The side baffle 7011 matches the rear end cover and is provided with an arc-shaped matching portion 7014 for better matching connection.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A high-protection generator, comprising a rear end cover (1), a stator (2), a rotor (3), a fan (4), a front end cover (5) and a pulley (6), characterized in that: The outer side of the rear end cover (1) is connected to a protective cover (7), and the protective cover (7) comprises a cover body (701) and an air guide pipe (702); The cover body (701) comprises a side baffle (7011) and a cover plate (7012); one side of the side baffle (7011) is connected to an edge of the cover plate (7012) on a side facing the rear end cover (1); the other side of the side baffle (7011) is connected to the rear end cover (1); an air inlet (70121) and a mounting hole (70122) are provided on the cover plate (7012); the air inlet (70121) is connected to the air guide duct (702); and a bolt passes through the mounting hole (70122) and is connected to the rear end cover (1).

2. A high protection generator according to claim 1, characterized in that: A notch portion (70123) is recessed at the connection between the cover plate (7012) and the side baffle (7011), one side of the notch portion (70123) is connected to the side baffle (7011), and the other side of the notch portion (70123) is downwardly connected to the partition plate (703). The notch portion (70123), the side baffle (7011), and the partition plate (703) together form a first installation side window (100). The partition plate (703), the cover plate (7012), and the side baffle (7011) together form a second installation side window (200). The first installation side window (100) and the second installation side window (200) are separated and arranged left and right by the partition plate (703). The regulator terminal (801) passes through the first installation side window (100) and extends outward, and the rectifier terminal (901) passes through the second installation side window (200) and extends outward.

3. A high protection generator according to claim 2, characterized in that: An extension plate (704) is provided at a connection point between the partition plate (703) and the first mounting side window (100) and protrudes inwards. The extension plate (704) is arranged between the regulator (8) and the rectifier (9).

4. A high protection generator according to claim 3, characterized in that: The partition plate (703) comprises a partition portion (7031), a corner limiting portion (7032) and an end limiting portion (7033); one end of the partition portion (7031) is connected to the extension plate (704); the other end of the partition portion (7031) is connected to the longer side (70321) of the corner limiting portion (7032); and the shorter side (70322) of the corner limiting portion (7032) is connected to the end limiting portion (7033).

5. A high protection generator according to claim 4, characterized in that: The shorter side (70322) and the end limiting portion (7033) are perpendicular to each other on a horizontal plane.

6. A high protection generator according to claim 5, characterized in that: The cover plate (7012) is provided with internal fasteners (70124) on the inner sides of the left and right ends of the second mounting side window (200) and is closely attached to the side baffle (7011).

7. A high protection generator according to claim 2 or 6, characterized in that: A third installation side window (300) is provided on the side baffle (7011), and another rectifier terminal (901) passes through the third installation side window (300) and extends outward.

8. The high protection generator according to claim 1, characterized in that: The side baffle (7011) is provided with an inwardly protruding connection reinforcement piece (7013) at the connection with the cover plate (7012).

9. The high protection generator according to claim 1, characterized in that: The side baffle (7011) is matched with the rear end cover and is provided with an arc-shaped matching portion (7014).

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