Hub motor and electric vehicle

Abstract

The embodiment of the utility model provides a hub motor and an electric vehicle. The wheel hub motor comprises a motor main body, the motor end cover is arranged on one side of the motor main body; the terminal fixing seat is arranged outside a motor shaft in a sleeving manner and is mounted in the mounting hole of the motor end cover, and a plurality of through holes for communicating the inside and the outside of the hub motor are formed in the terminal fixing seat; the plurality of wiring terminals are connected with wires in the hub motor, each wiring terminal is installed in one through hole, and one end, close to the interior of the hub motor, of each wiring terminal is flush with the edge of the corresponding through hole or extends out of the corresponding through hole. The wiring terminal and the terminal fixing base can bear external force borne by the external wire, and faults such as short circuit and open circuit in the motor caused by the external force are prevented.

Description

Technical Field

[0001] This application relates to the field of motor technology, and more particularly to a hub motor and an electric vehicle. Background Technology

[0002] Hub motors, also known as in-wheel motors, are a type of motor technology that integrates an electric motor inside the wheel to directly drive its rotation. This eliminates traditional mechanical transmission components such as drive shafts, differentials, and half-shafts, resulting in more direct and efficient power transmission. In related technologies, the internal wiring of hub motors typically needs to be led out from an opening on the motor shaft via external wires, with the internal and external wires connected using methods such as soldering. However, this wiring method poses certain safety hazards. During production, installation, or user operation, the connection points between the internal and external wires are susceptible to breakage or loosening due to external forces, potentially causing short circuits or open circuits within the motor. Utility Model Content

[0003] In view of this, embodiments of this application provide a new hub motor and electric vehicle to solve the problem that the connection between the internal and external wires of the motor is easily broken or loosened by external forces.

[0004] According to a first aspect of the embodiments of this application, a hub motor is provided, comprising: a motor body; a motor end cover disposed on one side of the motor body; a terminal fixing seat sleeved on the outside of the motor shaft and installed in the mounting hole of the motor end cover, the terminal fixing seat having a plurality of through holes communicating between the inside and outside of the hub motor; a plurality of wiring terminals connected to wires inside the hub motor, each wiring terminal being installed in one of the through holes, and the end of the wiring terminal near the inside of the hub motor being flush with or extending out of the through hole.

[0005] In some optional embodiments, the plurality of terminals include phase terminals connected to the motor phase wires and Hall terminals connected to the motor Hall wires, wherein the phase terminals and the Hall terminals are spaced apart by a certain distance.

[0006] In some alternative embodiments, the terminal block includes a connector located outside the through hole, the connector being detachably connected to the terminal holder.

[0007] In some alternative embodiments, the terminal block includes a bent portion located outside the hub motor, the bent portion extending in a predetermined direction at an angle to the axial direction of the motor shaft.

[0008] In some alternative embodiments, the terminal holder is interference-fitted with the motor shaft.

[0009] In some alternative embodiments, the terminal fixing seat is provided with a bearing, the bearing is in abutment with the motor end cover on the side away from the motor body, and the bearing is in abutment with the protruding edge provided on the terminal fixing seat on the side close to the motor body.

[0010] In some alternative embodiments, an oil seal structure is provided between the terminal fixing seat and the motor end cover, and the oil seal structure is located on the side of the bearing away from the motor body.

[0011] In some alternative embodiments, a buckle member is provided in the wiring terminal, and the wiring terminal is clamped with the wire through the buckle member.

[0012] In some alternative embodiments, a sealing ring is provided between the wiring terminal and the terminal fixing seat, and the gap between the wiring terminal and the through hole is sealed by the sealing ring.

[0013] According to a second aspect of the embodiments of the present application, an electric vehicle is provided, which comprises the hub motor according to any one of the above embodiments.

[0014] In the embodiments of the present application, the hub motor comprises a motor body, a motor end cover, a terminal fixing seat and a plurality of wiring terminals. The motor end cover is arranged on one side of the motor body. The terminal fixing seat is sleeved on the motor shaft and is installed in the mounting hole of the motor end cover. The wiring terminals are connected with the wires in the hub motor. Each wiring terminal is installed in a through hole, and the end of the wiring terminal close to the inside of the hub motor is flush with the edge of the through hole or protrudes out of the through hole. In this way, in the embodiments of the present application, the wiring terminals connected with the wires in the hub motor are connected with the external wires, and the external force on the external wires is borne by the wiring terminals and the terminal fixing seat during production, installation or use, so that the wiring of the wires in the motor is not affected by the external force, and the internal short circuit, open circuit and other faults of the motor caused by the external force are prevented. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0016] Figure 1 A cross-sectional view of a hub motor is provided for alternative embodiments of the present application.

[0017] Figure 2 A schematic view of a motor end cover and a terminal fixing seat is provided for alternative embodiments of the present application.

[0018] Figure 3 A schematic view of a terminal fixing seat provided for optional embodiments of the present application.

[0019] Figure 4 A schematic view of another terminal fixing seat provided for optional embodiments of the present application.

[0020] The reference signs are:

[0021] 100, wheel hub motor; 110, motor end cover; 120, terminal fixing seat; 121, through hole; 122, protruding edge; 130, wiring terminal; 131, phase line terminal; 132, Hall terminal; 133, connecting piece; 134, bending part; 135, base part; 140, housing rear seat; 150, motor shaft; 160, bearing; 170, oil seal structure; 181, first external terminal; 182, second external terminal. DETAILED DESCRIPTION

[0022] In order for those skilled in the art to better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by those skilled in the art should belong to the scope of protection of the embodiments of the present application.

[0023] The terms used in the embodiments of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used in the embodiments of the present application means and includes any or all possible combinations of one or more associated listed items.

[0024] It should be understood that in the description of the embodiments of the present application, the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the solutions of the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0025] The terms first, second, etc. can be used to describe various elements, components, regions, modules, and / or sections, but these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms are used to distinguish one element, component, region, module, and / or section from another element, component, region, module, and / or section.

[0026] Unless otherwise clearly indicated and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0027] According to a first aspect of the embodiments of the present application, a new wheel hub motor 100 is provided to solve the above problems, which will be described below through multiple embodiments.

[0028] As shown in Figure 1 The wheel hub motor 100 in the embodiments of the present application includes a motor body, a motor end cover 110, a terminal fixing seat 120 and a plurality of wiring terminals 130, etc.

[0029] The motor body includes stator, rotor and other components, which are located in the shell of the wheel hub motor 100, Figure 1 The specific structure can refer to the related technology. The shell of the wheel hub motor 100 includes the motor end cover 110 and the shell rear seat 140. Along the axial direction of the motor shaft 150, the motor end cover 110 is located on one side of the motor body, at least part of the shell rear seat 140 is located on the other side of the motor body, the motor end cover 110 is connected with the shell rear seat 140, and the motor body is located in the shell space formed by the motor end cover 110 and the shell rear seat 140.

[0030] The motor end cover 110 is provided with a mounting hole penetrating through the motor end cover 110, and the motor shaft 150 passes through the mounting hole. The terminal fixing seat 120 is sleeved on the motor shaft 150 and is installed in the mounting hole of the motor end cover 110. A plurality of through holes 121 communicating the inside and outside of the wheel hub motor 100 can be formed on the terminal fixing seat 120.

[0031] The wiring terminal 130 is connected with the wire in the wheel hub motor 100, and each wiring terminal 130 is installed in a through hole 121. Moreover, the end of the wiring terminal 130 close to the inside of the wheel hub motor 100 is flush with the edge of the through hole 121 or protrudes out of the through hole 121, so as to enhance the sealing performance of the through hole 121 and facilitate the connection between the wiring terminal 130 and the wire in the wheel hub motor 100.

[0032] The hub motor 100 can further include external terminals detachably connected with the wiring terminals 130, such as external terminals clamped with the wiring terminals 130. The external terminals can be connected with external wires outside the hub motor 100, so that the external wires are electrically connected with the wires inside the hub motor 100 through the external terminals and the wiring terminals 130 to complete the transmission of electrical signals between the external wires and the wires inside the motor. The embodiments of the present application can realize the quick plugging of the wiring terminals 130 and the external terminals by arranging the detachable wiring terminals 130 and the external terminals, that is, the quick connection and disconnection between the external wires and the motor, which can greatly facilitate the maintenance and repair of the hub motor 100.

[0033] The wires inside the hub motor 100 include phase lines (such as three-phase lines for providing three-phase alternating current) connected with the stator and Hall lines connected with the Hall sensors, etc. In the embodiments of the present application, the phase lines and the Hall lines inside the hub motor 100 can be connected to different wiring terminals 130, so as to avoid the electromagnetic interference of the phase lines on the Hall lines, and realize the decoupling of the internal phase lines and Hall lines of the motor and the external wires, which is beneficial to simplify the structure of the motor, improve the efficiency in the production and installation process, and reduce the defective rate.

[0034] As shown in Figures 1-3 In some optional embodiments, the plurality of wiring terminals 130 includes phase terminals 131 connected with the motor phase lines and Hall terminals 132 connected with the motor Hall lines, and the phase terminals 131 and the Hall terminals 132 are spaced apart by a certain interval.

[0035] The external wires can include external phase lines and external Hall lines, and the external terminals can include a first external terminal 181 connected with the phase terminals 131 and a second external terminal 182 connected with the Hall terminals 132, so as to connect the external phase lines through the first external terminal 181 and the external Hall lines through the second external terminal 182.

[0036] In the embodiments of the present application, by arranging the phase terminals 131 and the Hall terminals 132 to be spaced apart by a certain interval on the basis that the plurality of wiring terminals 130 includes the phase terminals 131 and the Hall terminals 132, the electromagnetic interference of the phase lines on the Hall lines can be further reduced.

[0037] As a feasible implementation manner, as shown in Figure 2 and Figure 3 The phase terminals 131 and the Hall terminals 132 are respectively located on opposite sides of the motor shaft 150, so as to maximize the interval between the phase terminals 131 and the Hall terminals 132. Of course, the phase terminals 131 and the Hall terminals 132 can also be located on the same side of the motor shaft 150, and the present application does not limit this.

[0038] In the embodiment of the present application, the wheel hub motor 100 comprises a motor body, a motor end cover 110, a terminal fixing seat 120 and a plurality of terminal terminals 130. The motor end cover 110 is arranged on one side of the motor body. The terminal fixing seat 120 is sleeved outside the motor shaft 150 and is installed in the mounting hole of the motor end cover 110. The terminal terminals 130 are connected with the wires inside the wheel hub motor 100. Each terminal terminal 130 is installed in a through hole 121, and the end of the terminal terminal 130 close to the inside of the wheel hub motor 100 is flush with the edge of the through hole 121 or protrudes out of the through hole 121. In this way, in the embodiment of the present application, the terminal terminals 130 connected with the wires inside the wheel hub motor 100 are connected with the external wires, and in the process of production, installation or user use, the external force received by the external wires is borne by the terminal terminals 130 and the terminal fixing seat 120, so that the wiring of the internal wires of the motor is not affected by the external force, and the internal short circuit, open circuit and other faults of the motor caused by the external force are prevented.

[0039] As shown in Figure 3 In some optional embodiments, the terminal terminal 130 comprises a connecting piece 133 outside the through hole 121, and the connecting piece 133 is detachably connected with the terminal fixing seat 120.

[0040] The connecting piece 133 can be located on the side of the terminal fixing seat 120 away from the motor body, so that the installation and disassembly of the terminal terminal 130 can be conveniently carried out outside the motor. The connecting piece 133 can be detachably connected with the terminal fixing seat 120 by a bolt, or can be detachably clamped with the terminal fixing seat 120 by a buckle, etc. The specific structure of the detachable connection is not limited in the embodiment of the present application.

[0041] In the embodiment of the present application, the terminal terminal 130 comprises a connecting piece 133 outside the through hole 121, and the connecting piece 133 is detachably connected with the terminal fixing seat 120, which can facilitate the installation and disassembly of the terminal terminal 130, and is beneficial to improve the production and maintenance efficiency of the wheel hub motor 100.

[0042] As shown in Figure 4 In some optional embodiments, the terminal terminal 130 comprises a bending portion 134 outside the wheel hub motor 100. The bending portion 134 extends along a predetermined direction L1, and there is an included angle between the predetermined direction and the axial direction L2 of the motor shaft 150, for example, the included angle is a right angle. Of course, in some other optional embodiments, the terminal terminal 130 can not be provided with the bending portion 134, but is entirely parallel to the axial direction of the motor shaft 150.

[0043] The terminal 130 can further include a base portion 135 connected with the bent portion 134, and a part of the base portion 135 is located in the through hole 121 on the terminal fixing seat 120. The bent portion 134 is connected with the external terminal in a predetermined direction away from one end of the base portion 135, so as to change the setting direction of the external terminal. Optionally, the included angle between the predetermined direction and the axial direction of the motor shaft 150 is 90 degrees, the bent portion 134 is perpendicular to the axial direction of the motor shaft 150, the base portion 135 is parallel to the axial direction of the motor shaft 150, and the bent portion 134 and the base portion 135 form an L shape.

[0044] In the embodiment, the terminal 130 includes the bent portion 134 located outside the hub motor 100, the bent portion 134 extends in a predetermined direction, and the predetermined direction has an included angle with the axial direction of the motor shaft 150. The bent portion 134 of the terminal 130 can have a certain angle with the axial direction of the motor shaft 150, so as to reduce the length of the terminal in the axial direction of the motor shaft 150, and improve the flexibility of the setting of the terminal 130 and the external terminal.

[0045] In some optional embodiments, the terminal fixing seat 120 is in interference fit with the motor shaft 150. Through the interference fit between the terminal fixing seat 120 and the motor shaft 150, the terminal fixing seat 120 can be closely combined with the motor shaft 150, so as to effectively fix the terminal fixing seat 120 on the motor shaft 150, and improve the sealing performance of the gap between the terminal fixing seat 120 and the motor shaft 150.

[0046] As shown in Figure 1 In some optional embodiments, the terminal fixing seat 120 is sleeved with the bearing 160, one side of the bearing 160 away from the motor body abuts against the motor end cover 110, and the other side of the bearing 160 close to the motor body abuts against the protruding edge 122 arranged on the terminal fixing seat 120. The protruding edge 122 can be referred to Figure 3 .

[0047] The motor end cover 110 can limit the movement of the bearing 160 and the terminal fixing seat 120 away from the motor body, and the motor shaft 150 can limit the movement of the bearing 160 and the terminal fixing seat 120 close to the motor body through the interference fit between the motor shaft 150 and the terminal fixing seat 120, so as to realize the installation of the bearing 160 and the terminal fixing seat 120 without the need of additionally arranging a connecting piece, which is beneficial to simplify the structure of the hub motor 100.

[0048] As shown in Figure 1As shown in the figure, in some optional embodiments, the motor shaft 150 can include multiple parts, wherein a first part of the motor shaft 150 is located in the motor shaft 150 mounting hole provided on the fixed seat, and a second part of the motor shaft 150 is located between the terminal fixed seat 120 and the rear seat 140 of the shell, and the diameter of the second part is greater than the diameter of the first part and the hole diameter of the motor shaft 150 mounting hole, so that the terminal fixed seat 120 can be limited to move towards the motor body by using the second part of the motor shaft 150.

[0049] As shown in the figure, Figure 1 As shown in the figure, in some optional embodiments, an oil seal structure 170 is provided between the terminal fixed seat 120 and the motor end cover 110, and the oil seal structure 170 is located on the side of the bearing 160 away from the motor body. The oil seal structure 170 can be a single-lip oil seal, a double-lip oil seal or other forms of oil seal mechanism, and the specific arrangement mode can refer to the related technology, which will not be described here.

[0050] In the embodiment of the application, the oil seal structure 170 is provided between the terminal fixed seat 120 and the motor end cover 110, and the oil seal structure 170 is located on the side of the bearing 160 away from the motor body. The gap between the terminal fixed seat 120 and the motor end cover 110 can be sealed by the oil seal structure 170 on the side of the bearing 160 away from the motor body, so as to realize the sealing protection of the bearing 160 and the motor body.

[0051] In some optional embodiments, a buckle member is provided in the wiring terminal 130, and the wiring terminal 130 is clamped with the wire through the buckle member. Exemplarily, the buckle member can be an elastic buckle. When installing the wire, the wire can be inserted into the buckle member or between the buckle member and the wiring terminal 130, and the elastic deformation of the buckle member is caused, so that the wire is clamped by the elastic force of the buckle, and the clamping of the buckle member and the wire is realized. When the wire is removed from the wiring terminal 130, the wire can be directly pulled out.

[0052] In the embodiment of the application, the buckle member is provided in the wiring terminal 130, and the wiring terminal 130 is clamped with the wire through the buckle member, so that the connection between the wiring terminal 130 and the wire can be simply and conveniently realized, and the efficiency of installing the wire by the wiring terminal 130 is improved.

[0053] In some optional embodiments, a sealing ring is provided between the wiring terminal 130 and the terminal fixed seat 120, and the gap between the wiring terminal 130 and the through hole 121 is sealed by the sealing ring.

[0054] The wire terminal 130 and the through hole 121 cannot be tightly fitted in general. In the embodiment of the application, a sealing ring is arranged between the wire terminal 130 and the terminal fixing seat 120, and the gap between the wire terminal 130 and the through hole 121 is sealed by the sealing ring, so as to ensure the sealing of the gap between the wire terminal 130 and the through hole 121, and prevent water flow or mud and sand from entering the inside of the hub motor 100 from the gap between the wire terminal 130 and the through hole 121.

[0055] In some optional embodiments, a sealing ring can also be arranged between the wire terminal 130 and the external terminal, and the gap between the wire terminal 130 and the external terminal is sealed by the sealing ring.

[0056] The embodiment of the application also provides an electric vehicle, which comprises the hub motor 100 as described in any of the above embodiments. The electric vehicle can be an electric bicycle or an electric motorcycle, or can be an electric car, and the embodiment of the application does not limit the type of the electric vehicle.

[0057] The electric vehicle provided by the embodiment of the application and the foregoing hub motor 100 embodiment are based on the same inventive concept and can achieve the same effect, and the specific implementation process can be referred to the description in the foregoing hub motor 100 embodiment, which will not be described here in detail.

[0058] It should be noted that, according to the needs of implementation, each component / step described in the embodiment of the application can be split into more components / steps, or two or more components / steps or part of the operation of the components / steps can be combined into a new component / step, so as to achieve the purpose of the embodiment of the application.

[0059] In this document, the terms "a" or "an" are not limited to one, but rather to one or more. The terms "first", "second" or the like are used to distinguish one from another, not necessarily in a chronological or sequential manner, and are merely identifiers for the sake of convenience. The terms "include", "comprise" or their variants are intended to cover non-exclusive inclusions, such that processes, methods, articles or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or other elements inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the phrase "including a" does not exclude the presence of additional identical elements in the process, method, article or device that includes the element.

[0060] Finally, it should be noted that: the above is only the preferred embodiment of the application, which is only used to illustrate the technical scheme of the application, and is not used to limit the protection scope of the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A wheel hub motor, characterized by, The application relates to a hub motor, comprising: a motor body; a motor end cover arranged on one side of the motor body; a terminal fixing seat sleeved on the motor shaft and installed in a mounting hole of the motor end cover, a plurality of through holes for communication between the inside and outside of the hub motor being formed in the terminal fixing seat; a plurality of wiring terminals connected with wires in the hub motor, each of the wiring terminals being installed in one of the through holes, and one end of the wiring terminal close to the inside of the hub motor being flush with the edge of the through hole or extending out of the through hole.

2. The wheel hub motor according to claim 1, characterized in that The plurality of wiring terminals comprise phase line terminals connected with phase lines of the motor and Hall terminals connected with Hall lines of the motor, and the phase line terminals and the Hall terminals are spaced apart by a certain interval.

3. The wheel hub motor according to claim 1, characterized in that, The wiring terminal comprises a connecting piece outside the through hole, and the connecting piece is detachably connected with the terminal fixing seat.

4. The wheel hub motor of claim 1, wherein, The wiring terminal comprises a bending part outside the hub motor, the bending part extends in a predetermined direction, and the predetermined direction forms an included angle with the axial direction of the motor shaft.

5. The in-wheel motor according to claim 1, characterized by The terminal fixing seat is in interference fit with the motor shaft.

6. The wheel hub motor according to claim 5, characterized in that A bearing is sleeved on the terminal fixing seat, the side of the bearing away from the motor body abuts against the motor end cover, and the side of the bearing close to the motor body abuts against a convex edge arranged on the terminal fixing seat.

7. The wheel hub motor according to claim 6, characterized in that An oil seal structure is arranged between the terminal fixing seat and the motor end cover, and the oil seal structure is located on the side of the bearing away from the motor body.

8. The in-wheel motor according to claim 1, characterized by A buckle piece is arranged in the wiring terminal, and the wiring terminal is clamped with the wire through the buckle piece.

9. The in-wheel motor according to claim 1, characterized by A sealing ring is arranged between the wiring terminal and the terminal fixing seat, and the gap between the wiring terminal and the through hole is sealed by the sealing ring.

10. An electric vehicle, characterized by The application further relates to a hub motor as claimed in any one of claims 1-9.

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