A hub motor and an electric vehicle

Abstract

This utility model relates to the field of electric vehicle parts technology, specifically to a hub motor and an electric vehicle. The hub motor includes an aluminum rim, a magnetic ring, an end cap, and positioning components. The aluminum rim is fitted around the outside of the magnetic ring, and the inner wall of the aluminum rim is in contact with the outer wall of the magnetic ring. Positioning components are provided circumferentially on both the edge of the end cap and the edge of the aluminum rim, and the end cap is detachably connected to the aluminum rim through the positioning components. The hub motor and electric vehicle body provided by this utility model have significantly reduced weight, increased power density of the hub motor, and achieved lightweight design of the motor and the entire vehicle, resulting in effective reduction of energy consumption and a significant increase in driving range.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle parts technology, specifically to a hub motor and an electric vehicle. Background Technology

[0002] As the popularity of electric vehicles increases, people have higher and higher requirements for their performance and quality. As one of the important components of electric vehicles, the performance of the hub motor directly affects the driving safety, energy consumption and riding comfort of the electric vehicle.

[0003] Currently, most traditional hub motors consist of an iron rim and a magnetic coil. The magnetic coil has screw holes for fixing the motor end cap. To accommodate the space for these screw holes, the magnetic coil is thicker, making the hub motor heavier and affecting the overall vehicle weight. This reduces the motor's power density, increases the energy consumption of the electric vehicle, and ultimately impacts the user experience. Utility Model Content

[0004] (a) The technical problem solved by this utility model is: the existing hub motor has screw holes on the magnetic ring for fixing the end cover, which increases the overall weight and thus increases the energy consumption of the electric vehicle.

[0005] (II) Technical Solution To solve the above-mentioned technical problems, embodiments of this utility model provide a hub motor, including an aluminum rim, a magnetic ring, an end cap, and a positioning assembly; The aluminum rim is fitted around the outside of the magnetic ring, and the inner wall of the aluminum rim is in contact with the outer wall of the magnetic ring. The positioning components are provided circumferentially on both the edge of the end cap and the edge of the aluminum rim, and the end cap is detachably connected to the aluminum rim through the positioning components.

[0006] Furthermore, the positioning component includes a first positioning part, a second positioning part, and a screw; The first positioning part is arranged circumferentially along the edge of the end cap, and the second positioning part is arranged circumferentially along the edge of the aluminum rim. The screw passes through the first positioning part and the second positioning part to install the end cap on both sides of the aluminum rim.

[0007] Furthermore, the first positioning part includes a first connecting ear; The first connecting lug is connected to the end cap, and the first connecting lug has a first screw hole, through which the screw passes and is threaded to the second positioning part.

[0008] Furthermore, the second positioning part includes a second connecting ear; The second connecting lug is connected to the aluminum rim, and the second connecting lug has a second screw hole. The screw passes through the first screw hole and is threaded into the second screw hole.

[0009] Furthermore, there are multiple first positioning parts and multiple second positioning parts, which are arranged in an array and correspond one-to-one.

[0010] Furthermore, the hub motor also includes a motor shaft, which is disposed inside the wheel rim. Both ends of the motor shaft pass through the corresponding end caps and are connected to the mounting holes of the vehicle body.

[0011] Furthermore, the end caps on both sides of the aluminum rim are provided with through holes, and the end of the motor shaft extends through the through holes toward the side of the end cap away from the aluminum rim.

[0012] Furthermore, a permanent magnet is provided on the side of the aluminum rim facing away from the magnetic guide ring.

[0013] Furthermore, the permanent magnet is ring-shaped.

[0014] This utility model also provides an electric vehicle, including the aforementioned hub motor.

[0015] The beneficial effects of this utility model are: This utility model provides a hub motor, including an aluminum rim, a magnetic ring, an end cap, and positioning components. The aluminum rim is fitted around the outer side of the magnetic ring, and the inner wall of the aluminum rim is in contact with the outer wall of the magnetic ring, so that the rim and the magnetic ring are relatively fixed. Positioning components are provided circumferentially on the edge of the end cap and the edge of the aluminum rim. The end cap is detachably connected to the aluminum rim through the positioning components, so that the magnetic ring no longer needs to have pre-drilled screw holes for installation. Therefore, the wall thickness of the magnetic ring can be significantly reduced. Compared with the added positioning components, the weight reduction of the magnetic ring is significantly greater, which significantly reduces the overall weight of the hub motor, improves the power density of the hub motor, realizes the lightweight design of the motor, and effectively reduces the energy consumption of the motor.

[0016] The electric vehicle provided by this utility model includes the aforementioned hub motor. The overall weight of the hub motor is significantly reduced, which increases the power density of the electric vehicle motor and thus achieves a lightweight design. This reduces the energy consumption of the electric vehicle and increases its range. At the same time, the end cap is installed on the wheel rim through the positioning component, which also facilitates installation and removal, reducing maintenance time and costs. Attached Figure Description

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

[0018] Figure 1 This is a schematic diagram of the overall structure of the hub motor provided in an embodiment of the present utility model; Figure 2 A side view of the hub motor provided in an embodiment of this utility model; Figure 3 A schematic diagram showing the connection between the wheel rim and the magnetic coil of the hub motor provided in this embodiment of the utility model.

[0019] icon: 100-Rim; 101-Magnetic coil; 102-End cap; 200 - First positioning part; 201 - Second positioning part; 202 - Screw; 300 - Motor shaft; 301 - Permanent magnet. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] Example 1 like Figures 1 to 3 As shown, this utility model provides a hub motor, including an aluminum rim 100, a magnetic coil 101, an end cap 102, and a positioning assembly; An aluminum rim 100 is fitted on the outside of a magnetic ring 101, and the inner wall of the aluminum rim 100 is in contact with the outer wall of the magnetic ring 101. Positioning components are provided around the edge of the end cap 102 and the edge of the aluminum rim 100, and the end cap 102 is detachably connected to the aluminum rim 100 through the positioning components.

[0024] In this embodiment, the hub motor includes an aluminum rim 100, a magnetic ring 101, an end cap 102, and positioning components. The aluminum rim 100 is fitted around the outer side of the magnetic ring 101, and the inner wall of the aluminum rim 100 is in contact with the outer wall of the magnetic ring 101, so that the rim 100 and the magnetic ring 101 are relatively fixed. Positioning components are provided circumferentially on the edge of the end cap 102 and the edge of the aluminum rim 100. The end cap 102 is detachably connected to the aluminum rim 100 through the positioning components, so that the magnetic ring 101 no longer needs to reserve screw holes 202 for installation. Therefore, the wall thickness of the magnetic ring 101 can be significantly reduced. Compared with the added positioning components, the weight reduction of the magnetic ring 101 is significantly greater, which significantly reduces the overall weight of the hub motor, improves the power density of the hub motor, realizes the lightweight design of the motor, and effectively reduces the energy consumption of the motor.

[0025] In traditional hub motors, both the rim 100 and the magnetic ring 101 are made of iron. In this embodiment, the aluminum rim 100 of the hub motor is made of aluminum and is formed by casting. The magnetic ring 101 is still made of iron. By setting a positioning component on the circumferential edge of the aluminum rim 100 to cooperate with the assembly end cap 102, the thickness of the magnetic ring 101 can be significantly reduced. The wall thickness of the magnetic ring 101 is 2-3mm, and the wall thickness of the aluminum rim 100 is 2.5-4mm. Since the magnetic ring 101 is made of iron and the aluminum rim 100 is made of aluminum, the iron structure is reduced. Compared with the 6-8mm wall thickness of the magnetic ring 101 in traditional hub motors, the amount of high-density material used can be greatly reduced, and the aluminum structure can be increased. Due to the properties of metal, the weight of the hub motor provided in this embodiment can be significantly reduced.

[0026] According to one embodiment provided by this utility model, such as Figure 1 and Figure 2 As shown, the positioning assembly includes a first positioning part 200, a second positioning part 201, and a screw 202; The first positioning part 200 is arranged circumferentially along the edge of the end cover 102, and the second positioning part 201 is arranged circumferentially along the edge of the aluminum rim 100. The screw 202 passes through the first positioning part 200 and the second positioning part 201 to install the end cover 102 on both sides of the aluminum rim 100.

[0027] In this embodiment, a first positioning part 200 is arranged circumferentially along the edge of the end cap 102, and a second positioning part 201 is arranged circumferentially along the edge of the aluminum rim 100. By using screws 202 to pass through the first positioning part 200 and the second positioning part 201, the corresponding end cap 102 can be installed on both sides of the aluminum rim 100. The entire installation process is very simple and convenient for installation and subsequent maintenance and disassembly.

[0028] Preferably, the first positioning part 200 is block-shaped and arranged circumferentially along the edge of the end cover 102. In order to match the first positioning block, the second positioning block is also block-shaped and arranged circumferentially along the edge of the aluminum rim 100. Of course, the first positioning part 200 and the second positioning part 201 can also be an integral ring, but such an arrangement will increase the weight of the hub motor. Therefore, it is preferred to be block-shaped in order to achieve a lightweight design of the hub motor.

[0029] The first and second positioning blocks are preferably trapezoidal in shape, with the longer side connected to the edge of the end cap 102 or the aluminum rim 100. However, they are not limited to trapezoidal shapes and can also be rectangular or other shapes. Their purpose is to deviate from the design concept of this utility model and should fall within the protection scope of this utility model.

[0030] According to one embodiment provided by this utility model, such as Figure 1 and Figure 2 As shown, the first positioning part 200 includes a first connecting ear; The first connecting ear is connected to the end cap 102. The first connecting ear has a first screw 202 hole. The screw 202 passes through the first screw 202 hole and is threadedly connected to the second positioning part 201.

[0031] In this embodiment, the first connecting ear and the end cap 102 are integrally formed. Accordingly, in order to facilitate installation, the first connecting ear is provided with a first screw 202 hole. Preferably, the first screw 202 hole is located at the center of the first connecting ear. The screw 202 passes through the first screw 202 hole and is threadedly connected to the second positioning part 201 to install the end cap 102 on one side of the corresponding aluminum rim 100.

[0032] According to one embodiment provided by this utility model, such as Figure 1 and Figure 2 As shown, the second positioning part 201 includes a second connecting ear; The second connecting lug is connected to the aluminum rim 100. The second connecting lug has a second screw 202 hole. The screw 202 passes through the first screw 202 hole and is threadedly connected to the second screw 202 hole.

[0033] In this embodiment, in order to cooperate with the first screw 202 hole opened in the first mounting ear, a second connecting ear is also provided. The second connecting ear is integrally formed with the aluminum rim 100. Correspondingly, a second screw 202 hole is opened at the center of the second connecting ear. By threading the screw 202 through the first screw 202 hole and the second screw 202 hole, the end cap 102 can be installed on the corresponding two sides of the rim 100.

[0034] According to one embodiment provided by this utility model, such as Figure 1 and Figure 2 As shown, there are multiple first positioning parts 200 and second positioning parts 201. The first positioning parts 200 and second positioning parts 201 are arranged in an array and correspond one to one.

[0035] In this embodiment, there are multiple first positioning parts 200 and second positioning parts 201, preferably eight in total. The first positioning parts 200 are arranged in an array along the circumference of the edge of the end cover 102 and along the circumference of the edge of the aluminum rim 100. The first positioning parts 200 and the second positioning parts 201 correspond one-to-one, that is, the spacing between adjacent first positioning parts 200 and adjacent second positioning parts 201 is consistent so that they can be used together.

[0036] By setting the first positioning part 200 and the second positioning part 201 to be threadedly connected with the screw 202, the end caps 102 on both sides of the rim 100 can be installed, which can facilitate installation and disassembly, reduce maintenance time and cost, and improve maintenance efficiency.

[0037] According to one embodiment provided by this utility model, such as Figure 1 and Figure 2 As shown, the hub motor also includes a motor shaft 300, which is located inside the wheel rim 100. Both ends of the motor shaft 300 pass through the corresponding end caps 102 and are connected to the mounting holes of the vehicle body.

[0038] In this embodiment, the hub motor is connected to the mounting hole of the vehicle body through the motor shaft 300. That is, the motor shaft 300 is fixed inside the rim 100. The two ends of the motor shaft 300 are installed after passing through the corresponding end caps 102. The motor shaft 300 can rotate to generate a rotating magnetic field to generate torque.

[0039] According to one embodiment provided by this utility model, such as Figure 1 and Figure 2 As shown, the end caps 102 on both sides of the aluminum rim 100 are provided with through holes, and the end of the motor shaft 300 extends through the through holes to the side of the end cap 102 away from the aluminum rim 100.

[0040] In this embodiment, in order to facilitate the smooth passage of both ends of the motor shaft 300 through the end cover 102, through holes are symmetrically opened at the center of the end cover 102 on both sides of the aluminum rim 100. Thus, both ends of the motor shaft 300 can pass through the corresponding through holes and extend outward through the end cover 102 to facilitate fixed installation in the mounting holes of the vehicle body.

[0041] According to one embodiment provided by this utility model, such as Figure 1 As shown, a permanent magnet 301 is provided on the side of the aluminum rim 100 that is away from the magnetic guide ring 101.

[0042] In this embodiment, a permanent magnet 301 is provided on the side of the aluminum rim 100 facing away from the magnetic ring 101. The permanent magnet 301 and the magnetic ring 101 cooperate to enable the hub motor provided in this embodiment to work normally.

[0043] According to one embodiment provided by this utility model, such as Figure 1 As shown, the permanent magnet 301 is ring-shaped.

[0044] In this embodiment, since the rim 100 is annular, and a magnetic ring 101 is attached inside the rim 100, the magnetic ring 101 is also annular. In order to facilitate the cooperation between the magnetic ring 101 and the permanent magnet 301, the permanent magnet 301 is set as annular and sleeved on the side of the rim 100 away from the magnetic ring 101. Correspondingly, the permanent magnet 301 is attached to the outer wall surface of the rim 100. After being sleeved, it is fixed by applying glue.

[0045] Optionally, the permanent magnet 301 can also be in the form of blocks, evenly spaced along the outer wall of the rim 100. Its purpose does not deviate from the design concept of this utility model and should fall within the protection scope of this utility model.

[0046] The permanent magnet 301, the rim 100 and the magnetic coil 101 constitute the rotor of the hub motor. The motor shaft 300 is fixed inside the rim 100, so the motor shaft 300 is equivalent to the stator of the hub motor. Of course, components such as reducer, clutch, brake and coil also need to be provided, but these are all existing technologies, so they will not be described in detail.

[0047] Example 2 This utility model also provides an electric vehicle, including the aforementioned hub motor.

[0048] In this embodiment, the electric vehicle includes the aforementioned hub motor. The overall weight of the hub motor is significantly reduced, which increases the motor power density of the electric vehicle, thereby achieving a lighter weight. This reduces the energy consumption of the electric vehicle and increases its driving range. At the same time, the end cap 102 is installed on the rim 100 through the positioning component, which also facilitates installation and removal, reducing maintenance time and costs.

[0049] The aforementioned electric vehicles include, but are not limited to, electric bicycles, electric motorcycles, electric scooters, electric transport vehicles, and electric cars.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A hub motor, characterized in that, Includes an aluminum rim (100), a magnetic ring (101), an end cap (102), and a positioning assembly; The aluminum rim (100) is sleeved on the outside of the magnetic ring (101), and the inner wall surface of the aluminum rim (100) is in contact with the outer wall surface of the magnetic ring (101). The positioning component is provided circumferentially on both the edge of the end cap (102) and the edge of the aluminum rim (100), and the end cap (102) is detachably connected to the aluminum rim (100) through the positioning component.

2. The hub motor according to claim 1, characterized in that, The positioning component includes a first positioning part (200), a second positioning part (201), and a screw (202). The first positioning part (200) is arranged circumferentially along the edge of the end cap (102), and the second positioning part (201) is arranged circumferentially along the edge of the aluminum rim (100). The screw (202) passes through the first positioning part (200) and the second positioning part (201) to install the end cap (102) on both sides of the aluminum rim (100).

3. The hub motor according to claim 2, characterized in that, The first positioning part (200) includes a first connecting ear; The first connecting ear is connected to the end cap (102). The first connecting ear has a first screw (202) hole. The screw (202) passes through the first screw (202) hole and is threaded to the second positioning part (201).

4. The hub motor according to claim 3, characterized in that, The second positioning part (201) includes a second connecting ear; The second connecting lug is connected to the aluminum rim (100). The second connecting lug has a second screw (202) hole. The screw (202) passes through the first screw (202) hole and is threadedly connected to the second screw (202) hole.

5. The hub motor according to claim 4, characterized in that, The first positioning part (200) and the second positioning part (201) are provided in multiples, and the first positioning part (200) and the second positioning part (201) are arranged in an array and correspond one to one.

6. The hub motor according to claim 1, characterized in that, The hub motor also includes a motor shaft (300), which is located inside the wheel rim (100). Both ends of the motor shaft (300) pass through the corresponding end caps (102) and are connected to the mounting holes of the vehicle body.

7. The hub motor according to claim 6, characterized in that, Both ends of the aluminum rim (100) are provided with through holes, and the end of the motor shaft (300) extends through the through holes toward the side of the end cover (102) away from the aluminum rim (100).

8. The hub motor according to claim 1, characterized in that, The aluminum rim (100) has a permanent magnet (301) on the side facing away from the magnetic ring (101).

9. The hub motor according to claim 8, characterized in that, The permanent magnet (301) is ring-shaped.

10. An electric vehicle, characterized in that, Including a hub motor as described in any one of claims 1-9.

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