CN209088697U - An electric vehicle motor - Google Patents

Abstract

The utility model discloses a kind of electric vehicle motors, including main shaft, spacing are rotatably connected to multiple reinforcing ribs on one end side wall of the main shaft etc., the side of each reinforcing rib is fixedly connected to baffle, multiple cooling fins are equipped in the baffle, the baffle is connected with wheel hub by fixed device, cavity is equipped in the wheel hub, motor stator is equipped in the cavity, it is fixedly connected by connector with main shaft at the center of the motor stator, equal spacer rings are arranged with multiple ventilation holes on the side wall of the motor stator.The utility model passes through baffle and sealing shell, hub interior is set to reach sealed environment, dust or water is avoided to enter inside motor the normal work for interfering motor, by rotor come driving fan, it does not need additionally to use motor, avoids and additionally lead to the problem of heat, cooperate cooling fin, it radiates to hub interior cavity, heat dissipation effect has obtained greatly being promoted compared to traditional heat-dissipating.

Description

An electric vehicle motor

technical field

The utility model relates to the technical field of electric vehicles, in particular to an electric vehicle motor.

Background technique

In-wheel motor is a motor that integrates power unit, transmission and braking device into the hub. It can greatly simplify the mechanical part of the electric vehicle, make the vehicle structure simpler, and realize a variety of complex drives. It is convenient to adopt a variety of new energy vehicle technologies, so it has been widely used in the field of electric vehicles. When the in-wheel motor runs at high speed, a large amount of heat will be generated, and a large amount of accumulated heat will affect the normal operation of the in-wheel motor, so certain heat dissipation measures are required.

The traditional heat dissipation method usually uses ventilation holes to connect the inner cavity of the hub with the outside world to dissipate heat, but the heat dissipation effect is poor, the heat dissipation efficiency is low, and there is dust or sewage entering the hub motor through the ventilation holes, which interferes with the normal operation of the hub motor. Work or even damaged issues.

Utility model content

The purpose of this utility model is to solve the shortcomings existing in the prior art, such as: the traditional heat dissipation method usually uses ventilation holes to connect the inner cavity of the hub with the outside world, so as to dissipate heat, but the heat dissipation effect is poor, and the heat dissipation efficiency is low, Moreover, there is a problem that dust or sewage enters the inside of the in-wheel motor through the ventilation hole, which interferes with the normal operation of the in-wheel motor or even damages it.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

An electric vehicle motor includes a main shaft, a plurality of reinforcing ribs are rotatably connected to one end side wall of the main shaft at equal intervals, and one side of each of the reinforcing ribs is fixedly connected with a baffle plate, and the baffle plate is provided with a baffle plate. a plurality of cooling fins, the baffle is connected with a hub through a fixing device, a cavity is arranged in the hub, a motor stator is arranged in the cavity, and the center of the motor stator is fixedly connected with the main shaft through a connecting piece, The side wall of the motor stator is surrounded by a plurality of ventilation holes at equal intervals, and two motor controllers are arranged symmetrically about the main shaft through the motor stator, and the two motor controllers are close to one side wall of the baffle. A rack plate is fixedly connected with the rack plate, and the rack plate is arranged away from the main shaft;

The cavity is also provided with a motor rotor, the motor rotor is rotatably connected to the main shaft through a roller, a sub-cavity is arranged in the motor rotor, the motor stator is located in the sub-cavity, and the motor rotor is close to the rack plate There are a plurality of ventilation holes on one side of the motor rotor, and a bearing is fixedly connected to the side of the motor rotor close to the rack plate. The bearing is rotatably connected to a rotating shaft through a mounting block, and a fan is fixedly connected to the side wall of the rotating shaft One end of the rotating shaft close to the rack plate is fixedly connected with a gear, and the gear and the rack plate are meshed and connected.

Preferably, the fixing device includes a bolt, one side of the hub is provided with a threaded hole, the bolt is threadedly connected in the threaded hole through the baffle plate, and a limiting device is also provided on one side of the hub.

Preferably, the limiting device includes a spring, one side of the hub is provided with a chute, a side wall of the chute close to the bolt is fixedly connected with a spring, and one end of the spring is fixedly connected with a slider, so The sliding block is slidably connected in the chute, and the side of the baffle plate close to the sliding block is provided with a matching slot.

Preferably, each reinforcing rib is provided with an empty groove on one side of the reinforcing rib close to the baffle plate, the inner side wall of the hollow groove is provided with an inclined plane, and the hollow groove is helically symmetrical with respect to the main shaft.

Preferably, a sealed casing is fixedly connected to one end of the hub away from the reinforcing rib.

Preferably, the cooling fins are fan-shaped and symmetrically arranged around the main axis.

In the present utility model, the beneficial effects of the present utility model are:

1. When the motor is working, the rotor of the motor drives the shaft to rotate around the main shaft through the bearing, and the gear and the ring-shaped rack plate are meshed and connected, thereby driving the shaft to drive the fan blade to rotate, and the fan blade rotates to accelerate the air convection in the cavity. The ventilation holes form an air circulation, and the heat is dissipated by the heat sink to discharge the heat in the inner cavity of the wheel hub. There is no need to use an additional motor to drive the fan blades, avoiding the problem of additional heat generation. And the faster the motor rotates, the more heat is generated, but the faster the rotation speed of the fan blades, the faster the air convection and the air circulation in the cavity, and the dynamic improvement of the heat dissipation effect.

2. The reinforcing rib can improve the mechanical strength of the baffle. The inner wall of the hollow groove in the reinforcing rib is arranged on an inclined plane, and each hollow groove is helically symmetrical about the main shaft. When the motor runs to drive the wheel to rotate, the opening on one side of the hollow groove is the air inlet. The other side is the air outlet. The diameter of the air inlet is larger than that of the air outlet. When the air enters from the air inlet and is discharged through the air outlet, it will be accelerated and blown onto the heat sink to increase the heat dissipation speed of the heat sink, thereby improving the heat dissipation effect and heat dissipation efficiency. .

Description of drawings

Fig. 1 is the side sectional view of a kind of electric vehicle motor proposed by the utility model;

Fig. 2 is the enlarged view of A structure in Fig. 1;

Fig. 3 is the enlarged view of B structure in Fig. 1;

FIG. 4 is a partial front view of a baffle plate of an electric vehicle motor proposed by the utility model.

In the picture: 1 main shaft, 2 reinforcing ribs, 3 empty slots, 4 cooling fins, 5 baffles, 6 wheel hubs, 7 motor stators, 8 ventilation holes, 9 motor controllers, 10 motor rotors, 11 ventilation holes, 12 sealed shells , 13 blades, 14 shafts, 15 gears, 16 rack plates, 17 bearings, 18 mounting blocks, 19 sliders, 20 springs, 21 bolts.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation , are constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

1-4, an electric vehicle motor includes a main shaft 1, a plurality of reinforcing ribs 2 are rotatably connected to one end side wall of the main shaft 1 at equal intervals, and a baffle 5 is fixedly connected to one side of each reinforcing rib 2, The mechanical strength of the baffle plate 5 is improved by the reinforcing ribs 2. Each reinforcing rib 2 is provided with an empty groove 3 on the side close to the baffle plate 5. The spiral is symmetrical. When the electric vehicle is moving forward, the baffle 5 rotates with the wheel. At this time, one side of the hollow 3 is the air inlet, and the other side is the air outlet.

Because the inner side wall of the cavity 3 is inclined, and the diameter of the air inlet is larger than that of the air outlet, the air enters from the air inlet, and is accelerated and discharged from the air outlet, which accelerates the air flow near the baffle 5 and improves the heat dissipation effect. A plurality of cooling fins 4, the cooling fins 4 are fan-shaped, and are arranged symmetrically around the main shaft 1, and the fan-shaped cooling fins 4 symmetrically arranged around the main shaft 1 can ensure the stable bearing force of the baffle 5, and at the same time greatly increase the heat dissipation area, The baffle 5 is connected with the hub 6 through the fixing device, and the cooling and heat exchange of the air inside and outside the hub 6 is realized through the cooling fins 4 .

The end of the hub 6 away from the reinforcing rib 2 is fixedly connected to the sealing shell 12. The fixing device includes a bolt 21. One side of the hub 6 is provided with a threaded hole. The plate 5 and the wheel hub 6 are easy to disassemble and install, which is convenient for the replacement and maintenance of the motor equipment inside the wheel hub 6. Combined with the sealing shell 12, the inside of the wheel hub 6 achieves a sealed environment, preventing dust or water from entering and interfering with the normal operation of the motor equipment inside the wheel hub 6. Work.

One side of the hub 6 is also provided with a limiting device, the limiting device includes a spring 20, one side of the hub 6 is provided with a chute, a side wall of the chute close to the bolt 21 is fixedly connected with a spring 20, and one end of the spring 20 is fixedly connected There is a slider 19, the slider 19 is slidably connected in the chute, and the side of the baffle 5 close to the slider 19 is provided with a matching slot, when the slider 19 pops out under the elastic force of the spring 20, it touches the baffle 5, the baffle 5 is initially limited and fixed to facilitate subsequent fixing and installation.

The hub 6 is provided with a cavity, the cavity is provided with a motor stator 7, the center of the motor stator 7 is fixedly connected with the main shaft 1 through a connector, and a plurality of ventilation holes 8 are surrounded at equal intervals on the side wall of the motor stator 7, Two motor controllers 9 symmetrically arranged with respect to the main shaft 1 run through the motor stator 7, and a rack plate 16 is fixedly connected to one side wall of the two motor controllers 9 close to the baffle 5, and the rack plate 16 is far away from the main shaft. 1, the rack plate 16 is arranged in a ring shape.

A motor rotor 10 is also arranged in the cavity, and the motor rotor 10 is rotatably connected with the main shaft 1 through a roller. The motor rotor 10 is provided with a sub-chamber, the motor stator 7 is located in the sub-chamber, and the motor rotor 10 is close to the side of the rack plate 16 A plurality of ventilation holes 11 are provided, and a bearing 17 is also fixedly connected to the side of the motor rotor 10 close to the rack plate 16 . 13. A gear 15 is fixedly connected to one end of the rotating shaft 14 close to the rack plate 16, and the gear 15 is meshed with the rack plate 16.

The ventilation hole 8 and the ventilation hole 11 constitute the air circulation channel of the cavity in the hub 6. When the motor in the hub 6 starts to work, the motor rotor 10 drives the shaft 14 to rotate around the main shaft 1 through the bearing 17. The rack plate 16 is meshed and connected, so while rotating around the main shaft 1, the gear 15 rotates, thereby driving the rotating shaft 14 to rotate the fan blade 13, forcing the air convection in the cavity of the hub 6 to be accelerated, passing through the ventilation hole 8 and the ventilation hole 11. It circulates and dissipates heat to the motor, and the heat is dissipated through the heat sink 4 .

In the present invention, after the motor in the hub 6 is started, the motor rotor 10 rotates around the main shaft 1, and the shaft 14 is driven to rotate around the main shaft 1 through the bearing 17 and the mounting block 18, and the gear 15 is meshed with the annularly arranged rack plate 16. Therefore, The gear 15 is also rotating while rotating around the main shaft 1, thereby driving the rotating shaft 14 to rotate the fan blade 13, accelerating the air convection in the cavity, and forming the air circulation channel inside the cavity between the ventilation hole 8 and the ventilation hole 11 , the fan blade 13 promotes the air convection inside the cavity to form a circulation, takes away the heat on the motor, and then exchanges the cold and heat with the outside air through the heat sink 4 to discharge the heat. While rotating, the air flow near the baffle 5 is accelerated, and the heat dissipation speed of the heat sink 4 is increased, thereby improving the overall heat dissipation effect and heat dissipation efficiency.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (6)

1. An electric vehicle motor, comprising a main shaft (1), characterized in that, a plurality of reinforcing ribs (2) are rotatably connected at equal intervals on one end side wall of the main shaft (1), each of the reinforcing ribs (2). A baffle (5) is fixedly connected to one side of the baffle plate (5), a plurality of cooling fins (4) are arranged in the baffle plate (5), and the baffle plate (5) is connected with a wheel hub (6) through a fixing device, so The hub (6) is provided with a cavity, the cavity is provided with a motor stator (7), the center of the motor stator (7) is fixedly connected to the main shaft (1) through a connecting piece, and the motor stator ( 7) A plurality of ventilation holes (8) are arranged around the side wall at equal intervals, and two motor controllers (9) symmetrically arranged with respect to the main shaft (1) run through the motor stator (7). A rack plate (16) is fixedly connected to a side wall of the motor controller (9) close to the baffle plate (5), and the rack plate (16) is arranged away from the main shaft (1); The cavity is further provided with a motor rotor (10), the motor rotor (10) is rotatably connected with the main shaft (1) through a roller, a sub-cavity is arranged in the motor rotor (10), and the motor stator ( 7) Located in the sub-chamber, the motor rotor (10) is provided with a plurality of ventilation holes (11) on the side close to the rack plate (16), and the motor rotor (10) is close to the rack plate (16). A bearing (17) is also fixedly connected on one side, the bearing (17) is rotatably connected to a rotating shaft (14) through a mounting block (18), and a fan blade (13) is fixedly connected to the side wall of the rotating shaft (14), A gear (15) is fixedly connected to one end of the rotating shaft (14) close to the rack plate (16), and the gear (15) is meshed with the rack plate (16). 2. An electric vehicle motor according to claim 1, characterized in that, the fixing device comprises a bolt (21), one side of the wheel hub (6) is provided with a threaded hole, and the bolt (21) penetrates through The baffle plate (5) is threaded in the threaded hole, and a limiting device is also provided on one side of the hub (6). 3 . The electric vehicle motor according to claim 2 , wherein the limiting device comprises a spring ( 20 ), and one side of the hub ( 6 ) is provided with a chute, and the chute is close to the bolt. 4 . One side wall of (21) is fixedly connected with a spring (20), one end of the spring (20) is fixedly connected with a slider (19), the slider (19) is slidably connected in the chute, and the block The side of the plate (5) close to the slider (19) is provided with a matching slot. 4. An electric vehicle motor according to claim 1, characterized in that, an empty groove (3) is provided in the side of each reinforcing rib (2) close to the baffle plate (5). The inner side wall of the groove (3) is provided with an inclined plane, and the hollow groove (3) is helical symmetry with respect to the main shaft (1). 5. An electric vehicle motor according to claim 1, characterized in that, a sealed casing (12) is fixedly connected to one end of the wheel hub (6) away from the reinforcing rib (2). 6 . The electric vehicle motor according to claim 1 , wherein the cooling fins ( 4 ) are fan-shaped and symmetrically arranged around the main shaft ( 1 ). 7 .