Motor

Abstract

The utility model relates to a motor which comprises the components of a housing which is cylindrical and at least one end of which is provided with an opening; the stator assembly comprises a stator iron core and a stator winding, and the stator assembly is accommodated in the shell; the rotor assembly is arranged in the stator assembly; the wiring terminal is connected with the wire outlet end of the stator winding; one end of the wiring copper bar is connected with the wiring terminal; and the switching copper column is connected to the other end of the wiring copper bar. According to the utility model, a plurality of elements are integrated together, the integration degree is high, the structure is compact, the occupied space is small, and the structural stability is higher. The motor controller is ingenious in structure, and solves the problems that the integrated design space of the motor and the motor controller in the electric drive of the passenger car is limited, and one-time switching cannot be successful. And meanwhile, flexible wire switching with high cost and low reliability is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of motors, and specifically relates to a motor. Background Art

[0002] The motor is a commonly used power output component. The motor includes a stator assembly and a rotor assembly. When the motor is powered on, the rotor can rotate to output rotational power. As for the rotor assembly, it can be divided into a permanent magnet rotor and an excitation rotor. The permanent magnet rotor can be divided into a surface-mounted rotor and an embedded rotor. The former has a permanent magnet mounted on the surface of the rotor core, and the latter has a permanent magnet embedded in the slot in the rotor core. For the excitation rotor, a winding is arranged in the rotor slot, in which electricity can be passed to generate a magnetic field. Whether it is a permanent magnet rotor or an excitation rotor, a coil is arranged in the stator assembly. The stator includes a stator core and a stator winding, and the stator winding is wound in the slot of the stator core. Therefore, when the motor needs to work, current is passed through the winding.

[0003] The power motor that drives the car generally uses AC power, while the on-board power battery provides DC power. Therefore, an inverter is generally set to convert the DC power in the on-board power battery into AC power and pass it into the coil of the motor. To this end, the coil needs to be connected to an external power supply. The general way is to lead the winding with a copper busbar. In the current automotive electric drive field, the three-phase line of the motor and the motor controller generally use a single transfer copper busbar, and complex three-phase line connections mostly use soft wire connections.

[0004] However, the copper busbars for the motor and motor controller are limited by the installation and transfer space, which makes it impossible to install them in some models with insufficient space, and they can only be connected by soft wires. However, the soft wire connection is exposed, prone to aging, high cost, and increases the risk of short circuits, and the overall protection measures are poor. Utility Model Content

[0005] Based on the applicant's research and practical experience in this field, the following improved technical solutions are proposed here.

[0006] A motor, comprising:

[0007] A shell, the shell is cylindrical and has at least one end open;

[0008] A stator assembly, the stator assembly comprising a stator core and a stator winding, the stator assembly being accommodated inside the housing;

[0009] A rotor assembly, wherein the rotor assembly is disposed inside the stator assembly;

[0010] A wiring terminal connected to an output terminal of the stator winding;

[0011] A wiring copper bar, one end of which is connected to the wiring terminal;

[0012] A transfer copper column is connected to the other end of the wiring copper bus.

[0013] According to one aspect of the utility model, the motor further includes an end cover, and the end cover is used to close the opening.

[0014] According to one aspect of the utility model, the end cover comprises a bearing accommodating portion, in which a bearing for supporting a rotor shaft of the motor is accommodated.

[0015] According to one aspect of the utility model, the motor also includes an auxiliary shell, which is arranged on the shell and has a first side surface and a second side surface, wherein the first side surface and the second side surface both have openings, and the wiring copper plate is partially accommodated in the auxiliary shell.

[0016] According to one aspect of the utility model, one end of the wiring terminal is located at the opening of the first side surface.

[0017] According to one aspect of the utility model, the wiring terminal includes a first end and a second end, the first end has a cylindrical shape and is used to connect to the outlet terminal, and the second end is an elliptical sheet structure and is provided with a fixing hole.

[0018] According to one aspect of the present invention, the second end extends perpendicularly to the axis of the motor.

[0019] According to one aspect of the present invention, the transfer copper column is parallel to the second end.

[0020] According to one aspect of the utility model, the wiring copper bus is L-shaped.

[0021] According to one aspect of the utility model, the number of the connection terminals, the connection copper plates and the transfer copper columns are all three.

[0022] The utility model achieves the purpose of radially switching the motor controller and reducing the axial distance, and integrates multiple components together, with a high degree of integration, a compact structure, a small footprint, and higher structural stability. The utility model has an ingenious structure and solves the problem of tight space for the integrated design of the motor and the motor controller in the electric drive of a passenger car, and the inability to successfully switch at one time. At the same time, it avoids the use of high-cost but low-reliability soft wire switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Exemplary embodiments of the present invention are described with reference to the accompanying drawings, in which:

[0024] Figure 1 The schematic diagram of the structure of the motor of the utility model is shown.

[0025] Figure 2 The diagram shows the connection relationship between the wiring terminals and the transfer copper pillars in the motor of the utility model. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, many specific details are set forth so that those skilled in the art can more fully understand and implement the present invention. However, it is obvious to those skilled in the art that the implementation of the present invention may not have some of these specific details. In addition, it should be understood that the present invention is not limited to the specific embodiments described. On the contrary, any combination of the features and elements described below may be considered to implement the present invention, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments and advantages are for illustrative purposes only and should not be regarded as features or limitations of the claims unless clearly stated in the claims.

[0027] In the following description, the descriptions about directions, such as "upper", "lower", "inner", "outer", "radial", "axial", etc., which may be used, are only for the convenience of description, unless otherwise specified, and are not intended to form any limitation on the technical solution of the utility model. In addition, in the following description, terms such as "first", "second", etc. are used to describe the elements of the present application, and these terms are only used to distinguish the elements, and are not intended to limit the nature, sequence, order or number of these elements.

[0028] Figure 1 The schematic diagram of the structure of the motor of the utility model is shown. Figure 1 The motor has a cylindrical shell 4, and at least one end of the shell 4 has an opening, and the opening is closed by an end cover 1. The other end of the shell 4 may have an opening so that it can be connected to components such as a reducer. The shell 4 may be cylindrical, with a cylindrical inner contour, and a receiving space is formed therein, and the interior of the receiving space is used to accommodate a stator assembly and a rotor assembly, etc. The stator assembly is fixedly arranged inside the shell 4, and a rotor assembly is arranged inside the stator assembly. The rotor assembly has a rotor shaft, and an opening may be provided on the end cover 1 for the rotor shaft to extend out so as to connect with external components to be driven. A bearing receiving portion may also be provided on the end cover 1 for accommodating bearings supporting the rotor shaft. The end cover 1 has a flange portion, and a threaded hole is provided on the flange portion so that it can be detachably fastened to the shell 4 using bolts and other connecting parts. For the sake of simplicity, in Figure 1 The stator assembly and the rotor assembly are not shown.

[0029] The stator assembly has a stator coil. In order to supply power to the stator coil, an auxiliary housing is provided on the housing 4 to accommodate the electrical connection components to be described in detail below. Specifically, the electrical connection components include a terminal 2, a copper busbar 5, and a transfer copper column 6. The auxiliary housing has at least three surfaces with openings. Figure 1 It can be seen that the first side is arranged facing the end cover 1, and the terminal 2 is arranged near the opening. Preferably, the motor of the utility model is a three-phase motor, so there are also three terminal 2, corresponding to the U phase, the V phase and the W phase respectively.

[0030] Figure 2 The figure shows the connection relationship between the wiring terminal and the transfer copper column in the motor of the utility model. The three-phase line of the winding is led out from the outlet terminal, and the outlet terminal is connected to the wiring terminal 2. Figure 2 As can be seen in the figure, the first end of the terminal block 2 has a cylindrical shape for connecting to the outlet terminal, and the second end has an elliptical sheet structure and is provided with a fixing hole for fixing by a connecting fastener. In addition, the second end is perpendicular to the axis of the motor.

[0031] from Figure 2 It can also be seen that the second end is connected to the copper busbar 5, and then connected to the transfer copper column. Specifically, for a three-phase motor, the three terminals are the first terminal 2-1, the second terminal 2-2 and the third terminal 2-3, the first terminal 2-1 is connected to the first transfer copper column 6-1 through the first copper busbar 5-1, the second terminal 2-2 is connected to the second transfer copper column 6-2 through the second copper busbar 5-2, and the third terminal 2-3 is connected to the third transfer copper column 6-3 through the third copper busbar 5-3. The extension direction of the three copper busbars is parallel to the extension direction of the second ends of the three terminals. The copper plate of the connection is generally L-shaped.

[0032] To describe the direction, the axis of the motor is called the X direction. Figure 1 The upward direction is called the Z direction, and the other direction is the Y direction. The X direction, Y direction and Z direction constitute three directions of a Cartesian coordinate system that are perpendicular to each other. Accordingly, the second end of the terminal block and the transfer copper column extend along the Z direction, while the connection copper bar extends along the X direction at first and then along the Y direction.

[0033] As an example, in Figure 2 The three connecting terminals 2 are arranged in a row in the Y direction, and the three transfer copper pillars 6 are also arranged in a row in the Y direction. In order to achieve such an arrangement, the ends of the first connecting copper bar and the third connecting copper plate need to be bent along the X direction. The arrangement of the three transfer copper pillars can be adaptively set according to the specific shape of the subsequent connecting parts, and it is not necessary to set it in Figure 2 Arrangement shown.

[0034] A portion of the transfer copper busbar 5 is accommodated in the auxiliary housing, and extends out from the opening of the second side surface of the auxiliary housing, and then is accommodated in the transfer box 7. The transfer box 7 is connected to the second side surface of the auxiliary housing through a connection hole provided in the flange connection part, thereby supporting, sealing and protecting the transfer copper busbar.

[0035] An opening may also be provided on the third side surface of the auxiliary housing perpendicular to the Z direction to facilitate fixing of the transfer copper busbar. Figure 2 As shown, the transfer copper bar can be fixed by threaded fasteners, etc. The opening can be sealed by a cover 3.

[0036] In the transfer structure of the utility model, the outlet is connected to the wiring terminal 2, completing the first direction change transfer. The wiring terminal 2 is then connected to the wiring copper bar 5, and the second direction change occurs. When the wiring copper bar 5 in the Y direction reaches the transfer copper column 6, the third direction change is achieved.

[0037] Through three transfers, the purpose of radial transfer of motor controller and reduction of axial distance is achieved, and multiple components are integrated together, with a high degree of integration, compact structure, small space occupation and higher structural stability. The utility model has an ingenious structure and solves the problem that the integrated design space of the motor and motor controller in the electric drive of passenger cars is tight and cannot be successfully transferred at one time. At the same time, it avoids the use of high-cost but low-reliability soft wire transfer.

[0038] The above description is merely an exemplary embodiment of the spirit and principle of the present invention. It will be appreciated by those skilled in the art that various changes may be made to the described examples without departing from the spirit and principle, and these changes and their various equivalents are anticipated by the applicant and fall within the scope defined by the claims of the present invention.

Claims

1. A motor, characterized in that: The motor comprises: A shell, the shell is cylindrical and has at least one end open; A stator assembly, the stator assembly comprising a stator core and a stator winding, the stator assembly being accommodated inside the housing; A rotor assembly, wherein the rotor assembly is disposed inside the stator assembly; A wiring terminal connected to an output terminal of the stator winding; A wiring copper bar, one end of which is connected to the wiring terminal; A transfer copper column is connected to the other end of the wiring copper bus.

2. The motor according to claim 1, characterized in that: The motor further comprises an end cover, and the end cover is used for closing the opening.

3. The motor according to claim 2, characterized in that: The end cover includes a bearing receiving portion in which a bearing for supporting a rotor shaft of the motor is received.

4. The motor according to any one of claims 1 to 3, characterized in that: The motor further comprises an auxiliary shell, which is arranged on the shell and has a first side surface and a second side surface, wherein the first side surface and the second side surface both have openings, and the wiring copper bar is partially accommodated in the auxiliary shell.

5. The motor according to claim 4, characterized in that: One end of the connection terminal is located at the opening of the first side surface.

6. The motor according to claim 5, characterized in that: The connection terminal comprises a first end and a second end. The first end has a cylindrical shape and is used to connect with the outlet terminal. The second end is an elliptical sheet structure and is provided with a fixing hole.

7. The motor according to claim 6, characterized in that: The second end extends perpendicular to the axis of the motor.

8. The motor according to claim 6, characterized in that: The transfer copper column is parallel to the second end.

9. The motor according to any one of claims 1 to 3, characterized in that: The wiring copper bar is L-shaped.

10. The motor according to any one of claims 1 to 3, characterized in that: The number of the connecting terminals, the connecting copper plates and the transfer copper columns are all three.

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