WO2020107891A1

WO2020107891A1 - Electric motor

Info

Publication number: WO2020107891A1
Application number: PCT/CN2019/094293
Authority: WO
Inventors: 刘建成; 李虹
Original assignee: 山西百晓可瑞科技有限公司; 刘建成
Priority date: 2018-11-29
Filing date: 2019-07-02
Publication date: 2020-06-04

Abstract

Disclosed is an electric motor, comprising an electric motor component and a controller component that are coaxially arranged and integrally mounted and connected. An electric motor housing of the electric motor component and a controller housing of the controller component are consistent in terms of cross-section profile. The electric motor employs an integrally mounted and connected structure, and the controller component and the electric motor component are coaxially arranged; therefore, compared with an existing split-body electric motor, the overall size of the electric motor is larger than that of the electric motor component by a mere 1/3, the size is reduced, the weight is reduced, and the need for onsite installation is obviated.

Description

A motor

This application requires the priority of the Chinese patent application submitted to the China Patent Office on November 29, 2018, with the application number 201811442606.5, and the invention titled "a kind of motor". The priority of the Chinese patent application with the application number 201821992374.6 and the invention titled "a motor", the entire content of which is incorporated by reference in this application.

Technical field

The invention relates to the technical field of electric motors, in particular to an electric motor.

Background technique

The motor is a commonly used power output device. The existing motor is usually installed by separate motor components and controller components. The motor components and controller components are provided for user installation. The motor has the defects of large volume, heavy weight, complicated on-site assembly, and low protection level.

Therefore, how to solve the problems of large size, heavy weight, and complicated on-site assembly of the split motor has become an urgent problem to be solved by those skilled in the art.

Summary of the invention

In view of this, the object of the present invention is to provide a motor to realize the integration of the motor and reduce the volume and weight of the motor.

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

A motor includes a coaxially arranged motor component and a controller component that are integrally installed and connected. The motor housing of the motor component and the controller housing of the controller component have the same cross-sectional shape.

Preferably, in the above-mentioned motor, the controller housing is further provided with a DC outlet cavity and a control outlet cavity. The DC outlet cavity is used to accommodate a DC outlet; the control outlet cavity is used to accommodate a control outlet.

Preferably, in the above motor, the controller cooling medium flow path in the controller housing communicates with the motor cooling medium flow path in the motor housing.

Preferably, in the above-mentioned motor, the cross-sectional dimensions of the controller cooling medium flow channel and the motor cooling medium flow channel are consistent.

Preferably, in the above motor, the controller component includes the controller housing, a controller end cover, and a controller module located inside the controller housing, and the controller end cover is installed on the controller The housing of the motor is away from the end of the motor component; the controller module is connected to the stator winding of the motor component through a collector plate.

Preferably, in the above motor, the controller module includes a power component, a capacitor component, a control component, a DC terminal component, and an AC component;

The AC component is connected to one end of the power component, and the AC component is connected to the stator winding through the collector plate;

The control component is disposed at an end of the controller housing close to the motor component, and the control component is connected to the power component;

The power component is disposed between the outer periphery of the capacitor component and the inner wall of the controller housing;

The DC terminal assembly is disposed between the capacitor assembly and the end surface of the controller end cover, and the DC terminal assembly is connected to an external DC power supply, positive and negative DC terminals of the power assembly, and the capacitor assembly.

Preferably, in the above-mentioned motor, the shape of the inner cross section of the controller housing is polygonal, and the outer shape of the cross section of the capacitor housing of the capacitor assembly is polygonal, and the same as the shape of the inner cross section of the controller housing Each edge of the capacitor housing is supported and connected to a corresponding edge of the inner ring of the controller housing, and a capacitor is accommodated in the capacitor housing.

Preferably, in the above-mentioned motor, the gap between the capacitor and the capacitor housing is filled with thermally conductive glue; each inner wall surface of the controller housing and the corresponding outer wall surface of the capacitor housing are tight One power component is fixedly attached.

Preferably, in the above-mentioned motor, the power module includes an elastic body and a heat-generating component, the heat-generating component is fixed to the elastic body, so that the heat-generating component is attached to the inner wall surface of the controller housing.

Preferably, in the above-mentioned motor, each edge of the capacitor housing is provided with a first positioning structure, and each edge of the inner ring of the controller housing is provided with support positioning with the first positioning structure The second positioning structure.

Preferably, in the above motor, the first positioning structure is a positioning groove, and the second positioning structure is a positioning protrusion;

Or the first positioning structure is a positioning protrusion, and the second positioning structure is a positioning groove.

Preferably, in the above motor, a heat insulation pad is provided between the control assembly and the inner end cover of the motor component.

Compared with the prior art, the beneficial effects of the present invention are:

In the motor provided by the present invention, the motor component and the controller component are coaxially arranged and integrally connected. The motor housing of the motor component and the controller housing of the controller component have the same cross-sectional shape. The motor adopts an integrated installation and connection structure, and the controller parts and the motor parts are arranged coaxially. Therefore, compared with the existing split-type motor, the total volume of the motor is only 1/3 more than the motor parts, which reduces the volume. , Reduced weight, no need for on-site installation.

BRIEF DESCRIPTION

In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only This is an embodiment of the present invention. For a person of ordinary skill in the art, without paying any creative labor, other drawings may be obtained according to the provided drawings.

1 is an explosion schematic diagram of a motor provided by an embodiment of the present invention;

2 is an exploded schematic diagram of a controller component of a motor provided by an embodiment of the present invention;

3 is a schematic structural diagram of a power component of a motor provided by an embodiment of the present invention;

4 is a schematic structural diagram of a capacitor assembly of a motor provided by an embodiment of the present invention;

5 is a schematic structural diagram of a controller housing of a motor provided by an embodiment of the present invention.

Among them, 1 is the controller part, 2 is the motor part;

11 is the controller end cover, 12 is the DC terminal component, 13 is the capacitor component, 131 is the capacitor, 132 is the capacitor housing, 1321 is the first positioning structure, 14 is the power component, 141 is the elastomer, 142 is the heating element, 15 Is the controller housing, 151 is the capacitor, 152 is the capacitor casing, 153 is the second positioning structure, 16 is the AC component, and 17 is the control component;

21 is the motor housing, 22 is the motor stator, 23 is the motor rotor, 24 is the collector plate, and 25 is the internal end cover of the motor.

detailed description

The core of the invention is to provide a motor, which realizes the integration of the motor and reduces the volume and weight of the motor.

The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

1 and 2, an embodiment of the present invention provides a motor, including a motor component 2 and a controller component 1, the motor component 2 includes a motor housing 21, a motor rotor 23, and an electronic stator 22, the controller component 1 The controller housing 15 is included, the motor component 2 and the controller component 1 are coaxially arranged and integrally connected, and the motor housing 21 and the controller housing 15 have the same cross-sectional shape.

The motor adopts an integrated installation and connection structure, and the controller part 1 and the motor part 2 are arranged coaxially. Therefore, compared with the existing split-type motor, the total volume of the motor is only about 1/3 more than that of the motor part 2. The volume is reduced by about 1/4 of the total volume of the current split motor, which reduces the volume and weight, does not require on-site installation, and has the simplest appearance.

As shown in FIG. 5, in this embodiment, the controller housing 15 is further provided with a DC outlet cavity 152 and a control outlet cavity 151. The DC outlet cavity 152 is used to accommodate the DC outlet; the control outlet cavity 151 is used to accommodate Control the outlet. The DC outlet cavity 152 and the control outlet cavity 151 may protrude from the outer surface of the controller housing 15 or may be located within the outer surface of the controller housing 15, the cable between the motor component 2 of the motor and the controller component 1 The signal line is integrated in the controller housing 15 and the motor housing 21, which improves the protection level of the motor, and the protection level can reach IP67. Because the cable is located inside the housing, the cable and signal line can use lower protection level cables, the protection level can be reduced to IP55, the cable cost is about 1/10 of the cost of the existing split motor; power The cable becomes shorter, the cable line loss is reduced, and the wiring work is reduced on site.

Further, in this embodiment, the controller cooling medium flow path is provided in the controller housing 15, the motor cooling medium flow path is provided in the motor housing 21, and the controller cooling medium flow path and the motor cooling medium flow Road connected. Since the cooling medium flow channels are all set in the casing and adopt closed flow channels, the protection level is further improved, and the controller cooling medium flow channel is connected with the motor cooling medium flow channel, simplifying the medium circulation structure.

Furthermore, the cross-sectional dimensions of the controller cooling medium flow channel and the motor cooling medium flow channel are consistent, which improves the tightness of the connection of the two cooling medium flow channels and is simple to process.

As shown in FIGS. 1 and 2, the controller component 1 is further optimized. In this embodiment, the controller component 1 includes a controller housing 15, a controller end cover 11, and a controller located inside the controller housing 15 Module, the controller end cover 11 is installed at the end of the controller housing 15 away from the motor part 2, the seal of the controller end cover 11 and the controller housing 15 meets the IP67 protection level; one end of the controller housing 15 and the motor One end of the housing 21 is connected, and the internal controller module is connected to the stator winding of the motor component 2 through the collector plate 24, which is convenient for assembly. The collector plate 24 collects the small current of each phase winding of the motor component 2 to the total AC terminal In the above, the AC terminal of the collector plate 24 makes electrical contact with the AC assembly 16 of the controller component 1 in a coaxial manner, and further communicates the power circuit between the motor component 2 and the controller component 1.

In this embodiment, the controller module includes a power component 14, a capacitor component 13, a control component 17, a DC terminal component 12, and an AC component 16; wherein, the controller module is electrically connected to the motor component 2 specifically refers to the AC component 16 through the set The electric disk 24 is connected to the stator winding of the motor part 2.

The control component 17 is disposed at the end of the controller housing 15 close to the motor components. The control component 17 is connected to the power component 14, the sensor, and external control signals; the power component 14 is disposed between the outer periphery of the capacitor component 13 and the inner wall of the controller housing 15 The DC terminal assembly 12 is provided between the capacitor assembly 13 and the end surface of the controller end cover 11. The DC terminal assembly 12 is connected to the external DC power supply, the positive and negative DC terminals of the power assembly 14, and the capacitor assembly 13. The power component 14 mainly includes a multilayer thick copper circuit board, a semiconductor power switch, a power terminal, a control terminal, and the like. The multi-layer thick copper circuit board of the power module 14 provides an electrical path for the semiconductor power switch, the on-off of the semiconductor power switch control circuit, and the power terminal is connected to the AC module 16 and the DC terminal module 12 of the controller component 1.

Further, in this embodiment, the shape of the inner ring of the cross section of the controller housing 15 is a polygon, and the capacitor assembly 13 includes a capacitor housing 132 and a capacitor 131, and the capacitor 131 is accommodated in the capacitor housing 132. The shape of the cross section of the capacitor housing 132 is polygonal, and the shape of the inner ring of the cross section of the controller housing 15 is the same. Each edge of the capacitor housing 132 is connected to the corresponding edge of the inner ring of the controller housing 15 to support the connection. The edges of the housing 132 are in interference fit with the corresponding edges of the inner circle of the controller housing 15. By setting the cross-sectional inner ring of the controller housing 15 and the cross-sectional shape of the capacitor housing 132 into a polygon, a solid support connection of the capacitor assembly 13 and the controller housing 15 is achieved, preventing the capacitor assembly 13 from being inside the controller housing 15 It does not need to open a hole in the casing and does not need to be connected by screws and other parts. The connection structure is simple, which further improves the protection level. At the same time, the capacitor assembly 13 is in contact with the controller housing 15 through the edges to provide a heat dissipation path for the capacitor assembly 13, and the heat is transferred to the controller housing 15 through the edges, and the controller housing 15 dissipates heat.

As an optimization, the cross-sectional inner ring of the controller housing 15 and the cross-section of the capacitor housing 132 are all hexagons, and the positioning support connection is realized through the structure of hexagons and six edges. Of course, the cross-sectional shape can also be a polygon such as a triangle, a quadrangle, a pentagon, or an octagon.

As shown in FIGS. 4 and 5, further, in this embodiment, each edge of the capacitor housing 132 is provided with a first positioning structure 1321, and each edge of the inner circle of the controller housing 15 is provided with The second positioning structure 153 is supported and positioned with the first positioning structure 1321. The capacitor housing 132 and the controller housing 15 achieve stable and reliable support and positioning through the first positioning structure 1321 and the positioning structure 153.

Specifically, the first positioning structure 1321 is a positioning groove, and accordingly, the second positioning structure 153 is a positioning protrusion; or the first positioning structure 1321 is a positioning protrusion, and accordingly, the second positioning structure 153 is a positioning groove. On a capacitor housing 132, the first positioning structures 1321 may all be positioning grooves or positioning protrusions, or have positioning grooves and positioning protrusions at the same time, accordingly, the second positioning structures 153 on the controller housing 15 may all In order to position the protrusion or the positioning groove, or to have both the positioning protrusion and the positioning groove, as long as the first positioning structure 1321 and the second positioning structure 153 can be cooperatively supported and positioned.

Further, in this embodiment, the gap between the capacitor 131 and the capacitor case 132 is filled with thermally conductive adhesive for fixing the capacitor 131 and dissipating heat, thereby improving the heat dissipation performance of the capacitor assembly 13; A power component 14 is tightly fixed between the wall surface and the corresponding outer wall surface of the capacitor housing 132, and the heat generated by the power component 14 is evenly distributed to the controller housing 15 to maximize the heat dissipation capacity.

As shown in FIG. 3, further, in this embodiment, the power module 14 includes a heating element 142 and an elastic body 141. The heating element 142 is fixed on the elastic body 141, and the elasticity of the elastic body 141 makes the heating element 142 and the control The inner wall surface of the device housing 15 is attached to further reduce the thermal resistance of the power component 14 and achieve rapid heat dissipation.

In this embodiment, in order to protect the electrical components in the controller component 1 from thermal damage, in this embodiment, a heat insulation pad is provided between the control assembly 17 and the motor internal end cover 25 of the motor component 2.

In this embodiment, most structural parts use extruded aluminum profiles, and the energy consumption is lower than that of die-cast aluminum profiles.

The embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments may refer to each other.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this document, but should conform to the widest scope consistent with the principles and novel features disclosed in this document.

Claims

A motor, characterized in that it includes a motor component (2) and a controller component (1) which are coaxially arranged and integrally connected, and a motor housing (21) of the motor component (2) and the control The controller housing (15) of the controller component (1) has the same cross-sectional shape.
The motor according to claim 1, wherein the controller housing (15) is further provided with a DC outlet cavity (152) and a control outlet cavity (151), the DC outlet cavity (152) is used for The DC outlet is accommodated; the control outlet chamber (151) is used to accommodate the control outlet.
The motor according to claim 1, wherein the controller cooling medium flow path in the controller housing (15) communicates with the motor cooling medium flow path in the motor housing (21).
The motor according to claim 3, characterized in that the cross-sectional dimensions of the controller cooling medium flow path and the motor cooling medium flow path are consistent.
The motor according to claim 1, characterized in that the controller component (1) includes the controller housing (15), a controller end cover (11), and is located in the controller housing (15) Internal controller module, the controller end cover (11) is installed at the end of the controller housing (15) away from the motor part (2); the controller module is connected to the collector plate (24) The stator windings of the motor component (2) are connected.
The motor according to claim 5, wherein the controller module includes a power component (14), a capacitor component (13), a control component (17), a DC terminal component (12), and an AC component (16);

The AC component (16) is connected to one end of the power component (14), and the AC component (16) is connected to the stator winding through the collector plate (24);

The control component (17) is disposed at an end of the controller housing (15) close to the motor component (2), and the control component (17) is connected to the power component (14);

The power component (14) is disposed between the outer periphery of the capacitor component (13) and the inner wall of the controller housing (15);

The DC terminal assembly (12) is disposed between the capacitor assembly (13) and the end surface of the controller end cover (11). The DC terminal assembly (12) is connected to an external DC power supply and the power assembly ( 14) The positive and negative DC terminals are connected to the capacitor assembly (13).
The motor according to claim 6, characterized in that the shape of the inner ring of the cross section of the controller housing (15) is polygonal, and the outer shape of the section of the capacitor housing (132) of the capacitor assembly (13) is polygonal, and The shape of the inner ring of the cross section of the controller housing (15) is the same. Each edge of the capacitor housing (132) is connected to the corresponding edge of the inner ring of the controller housing (15), A capacitor (131) is accommodated in the capacitor casing (132).
The motor according to claim 7, characterized in that the gap between the capacitor (131) and the capacitor housing (132) is filled with thermally conductive glue; each inner wall surface of the controller housing (15) A power component (14) is tightly fixed to the corresponding outer wall surface of the capacitor casing (132).
The motor according to claim 8, wherein the power component (14) includes an elastic body and a heat generating component, the heat generating component is fixed to the elastic body, so that the heat generating component and the controller case The inner wall surface of the body (15) is attached.
The motor according to any one of claims 7-9, characterized in that each edge of the capacitor housing (132) is provided with a first positioning structure (1321), and the controller housing (15) Each edge of the inner circle of is provided with a second positioning structure (153) that supports and positions with the first positioning structure (1321).
The motor according to claim 10, wherein the first positioning structure (1321) is a positioning groove, and the second positioning structure (153) is a positioning protrusion;

Or the first positioning structure (1321) is a positioning protrusion, and the second positioning structure (153) is a positioning groove.
The motor according to any one of claims 6-9, characterized in that a heat insulation pad is provided between the control assembly (17) and the motor internal end cover (25) of the motor component (2).