Circuit installation structure, motor and automobile

Abstract

The utility model relates to a circuit installation structure, a motor and an automobile, and the structure comprises a motor end cover which is provided with an installation hole; at least part of the insulating sheath is arranged in the mounting hole, and the insulating sheath is provided with a wire passing hole; and the wiring end of the three-phase outgoing line passes through the wire passing hole from the inner side of the motor end cover to the outer side of the motor end cover. The motor end cover is provided with the mounting hole, and the insulating sheath is mounted and fixed at the mounting hole, so that the three-phase outgoing line can pass through the wire passing hole preset on the insulating sheath to the outer side of the motor end cover, and at the moment, the insulating sheath separates the three-phase outgoing line from the motor end cover and protects the three-phase outgoing line; even if the three-phase leading-out wire deviates under vibration due to soft texture, the three-phase leading-out wire cannot directly contact with the motor end cover, so that the problem of short circuit caused by contact between the three-phase leading-out wire and the motor end cover is solved, and the operation reliability and safety of the motor are effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of motor insulation protection, and in particular to a line installation structure, a motor and a car. Background Art

[0002] In recent years, the new energy vehicle industry has developed rapidly, and higher requirements have been placed on the stability and reliability of new energy vehicles. As the main power source for new energy vehicles, electric motors play a vital role. In the motor, the three-phase lead wires pass through the perforated structure of the motor end cover and are connected to the connecting copper busbar of the motor controller. However, since the existing three-phase lead wires are usually braided soft wires, they are very easy to deflect and displace under vibration, which in turn creates the risk of short circuit between the three-phase lead wires and the motor end cover. Once a short circuit occurs, it will have a direct impact on the operating reliability and safety of the motor. Utility Model Content

[0003] Based on this, it is necessary to provide a line installation structure, a motor and a car to address the problems of contact short circuit risk, low operating reliability and safety in the prior art.

[0004] In a first aspect of the present application, a line installation structure is provided, comprising:

[0005] A motor end cover, wherein the motor end cover is provided with a mounting hole;

[0006] an insulating sheath, at least a portion of which is disposed in the mounting hole, and the insulating sheath is provided with a wire-passing hole; and

[0007] A three-phase lead-out wire, the connection terminal of the three-phase lead-out wire passes through the wire hole from the inner side of the motor end cover to the outer side of the motor end cover.

[0008] The line installation structure of the present scheme specifically relates to a technical scheme in which the three-phase lead-out wire passes through the inner side of the motor end cover to the outer side of the motor end cover so as to be connected to the connecting copper busbar of the motor controller. Compared with the prior art, a mounting hole is opened on the motor end cover and a fixed insulating sheath is installed at the mounting hole, so that the three-phase lead-out wire can pass through the preset wire hole on the insulating sheath to the outer side of the motor end cover. At this time, the insulating sheath separates the three-phase lead-out wire from the motor end cover to form a protection for the three-phase lead-out wire. Even if the three-phase lead-out wire is deviated under vibration due to its soft texture, it cannot directly contact the motor end cover, thereby preventing the three-phase lead-out wire from contacting and short-circuiting the motor end cover, and effectively improving the operating reliability and safety of the motor.

[0009] The technical solution of this application is further described below:

[0010] In one of the embodiments, the insulating sheath includes an inserting portion, the inserting portion is inserted into the mounting hole, and the outer peripheral wall of the inserting portion is tightly matched with the hole wall of the mounting hole.

[0011] In one embodiment, the insulating sheath further includes a main body portion, the main body portion is connected to the plug-in portion and is buckled onto the outer surface of the motor end cover, the main body portion is provided with an extension portion, and the main body portion is connected and fixed to the motor end cover via the extension portion.

[0012] In one embodiment, the line installation structure also includes a threaded component, the extension portion includes an extension arm, the extension arm is provided with a through hole, the motor end cover is provided with a threaded hole aligned with the through hole, and the threaded component passes through the through hole and is screwed into the threaded hole for fixation.

[0013] In one embodiment, the number of the extension arms is two, and the two extension arms are respectively connected to two ends of the main body in the length direction, and each extension arm is detachably assembled with the motor end cover through the correspondingly arranged threaded component.

[0014] In one embodiment, the extension portion further includes a reinforcing rib, and the reinforcing rib is disposed on the extension arm and connected to the main body.

[0015] In one embodiment, the line installation structure also includes a fixing piece, the main body is provided with a fixing hole, and the fixing piece is used to connect with the fixing hole to connect with the three-phase lead wire arranged on the motor end cover to fix the three-phase lead wire on the motor end cover.

[0016] In one of the embodiments, the insulating sheath is provided with a reinforcement structure.

[0017] A second aspect of the present application further provides an electric motor, which includes the circuit installation structure as described above.

[0018] According to a third aspect of the present application, a vehicle is provided, comprising the electric motor as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] FIG. 1 is a schematic structural diagram of a line installation structure according to an embodiment of the present application.

[0022] FIG. 2 is a schematic structural diagram of an insulating sheath according to an embodiment.

[0023] Figure 3 It is a top view of the structure of Figure 2.

[0024] Description of reference numerals:

[0025] 100. Line installation structure; 10. Motor end cover; 11. Installation hole; 20. Insulating sheath; 21. Wire hole; 22. Plug-in part; 23. Main body; 231. Extension arm; 232. Reinforcement rib; 233. Fixing hole; 24. Reinforcement structure; 30. Three-phase lead wire. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0027] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0028] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0032] Referring to FIG. 1 , a circuit installation structure 100 is shown in an embodiment of the present application. The circuit installation structure 100 of the present solution specifically relates to a technical solution in which a three-phase lead wire 30 passes from the inner side of a motor end cover 10 to the outer side of the motor end cover 10 so as to be connected to a connecting copper busbar of a motor controller.

[0033] Exemplarily, the line installation structure 100 includes a motor end cover 10 , an insulating sheath 20 and three-phase lead wires 30 .

[0034] The motor end cover 10 is provided with a mounting hole 11. The motor end cover 10 is specifically the rear end cover of the motor, and is made of metal. The motor end cover 10 is used to be assembled with the motor housing, and the motor end cover 10 and the motor housing form an installation cavity, and the installation cavity is used to install functional components such as motor coils.

[0035] At least part of the insulating sheath 20 is disposed in the mounting hole 11 , and a wire-passing hole 21 is provided in the insulating sheath 20 ; the terminal of the three-phase lead-out wire 30 passes through the wire-passing hole 21 from the inner side of the motor end cover 10 to the outer side of the motor end cover 10 .

[0036] In summary, the implementation of the technical solution of this embodiment will have the following beneficial effects: compared with the prior art, by opening a mounting hole 11 in the motor end cover 10 and installing and fixing the insulating sheath 20 at the mounting hole 11, the three-phase lead-out wire 30 can pass through the preset wire hole 21 on the insulating sheath 20 to the outside of the motor end cover 10. At this time, the insulating sheath 20 separates the three-phase lead-out wire 30 from the motor end cover 10 to protect the three-phase lead-out wire 30. Even if the three-phase lead-out wire 30 is deviated under vibration due to its soft texture, it cannot directly contact the motor end cover 10, thereby preventing the three-phase lead-out wire 30 from contacting and short-circuiting with the motor end cover 10, and effectively improving the operating reliability and safety of the motor.

[0037] It can be understood that the three-phase lead wire 30 is connected to the motor controller through a connecting copper busbar, thereby facilitating the motor controller to control the motor.

[0038] Optionally, the insulating sheath 20 in the present application is an injection molded part, that is, an integral component formed by cold-molding a plastic material using an injection molding machine, which has the advantages of simple structure, good integrity, and excellent insulation performance.

[0039] The wire holes 21 can be formed simultaneously when the insulating sheath 20 is injected, eliminating the need for subsequent machining steps, which helps reduce manufacturing costs and difficulty. Preferably, three wire holes 21 are provided, for the three connecting wires of the three-phase lead wire 30 to pass through respectively.

[0040] Please continue to refer to Figures 1 and 2. On the basis of the above embodiments, the insulating sheath 20 specifically includes a plug-in portion 22, which is inserted into the mounting hole 11, and the outer peripheral wall of the plug-in portion 22 is tightly matched with the hole wall of the mounting hole 11. The plug-in portion 22 is a columnar structural member, and its shape and size are respectively adapted to the shape and size of the mounting hole 11. For example, when the mounting hole 11 is a round hole, the plug-in portion 22 is a column with a circular cross-section; when the mounting hole 11 is an irregular hole, the plug-in portion 22 is an irregular column with an irregular cross-section. In this way, by inserting the plug-in portion 22 into the mounting hole 11, the insulating sheath 20 and the motor end cover 10 can be quickly and firmly pre-assembled and fixed, reducing the difficulty of installing the insulating sheath 20.

[0041] Please continue to refer to Figure 2 and Figure 3 In another embodiment, the insulating sheath 20 further includes a main body 23, and the main body 23 and the plug-in part 22 are integrally formed, and the connection strength is high. The cross-sectional size of the main body 23 is larger than the cross-sectional size of the plug-in part 22, so when the plug-in part 22 is inserted into the mounting hole 11, the main body 23 is connected to the plug-in part 22 and buckled on the outer surface of the motor end cover 10, so as to facilitate the installation and positioning of the insulating sheath 20 and the motor end cover 10, and improve the installation stability and assembly accuracy of the insulating sheath 20 and the motor end cover 10.

[0042] In addition, the main body 23 is provided with an extension portion, and the main body 23 is connected and fixed to the motor end cover 10 via the extension portion, thereby further improving the connection strength and reliability between the insulating sheath 20 and the motor end cover 10.

[0043] Specifically, in one embodiment, the line installation structure 100 further includes a threaded component, the extension portion includes an extension arm 231, the extension arm 231 is provided with a through hole, the motor end cover 10 is provided with a threaded hole aligned with the through hole, and the threaded component passes through the through hole and is screwed into the threaded hole for fixing. By adopting the above-mentioned threaded connection method, the insulating sheath 20 can be quickly and firmly locked and fixed on the motor end cover 10, the installation operation is convenient and labor-saving, and the insulating sheath 20 and the three-phase lead wire 30 are convenient to disassemble.

[0044] Furthermore, two extension arms 231 are provided, and the two extension arms 231 are respectively connected to the two ends of the length direction of the main body 23, and each extension arm 231 is detachably assembled with the motor end cover 10 through a correspondingly arranged threaded component. The two extension arms 231 can simultaneously lock and fix the insulating sheath 20 on the motor end cover 10 at both ends of the length direction of the insulating sheath 20, thereby further improving the installation stability and reliability of the insulating sheath 20, and preventing the insulating sheath 20 from falling off due to loosening of a single threaded component due to insufficient connection strength in a vibration environment for a long time.

[0045] Furthermore, the extension portion further includes a reinforcing rib 232, which is disposed on the extension arm 231 and connected to the main body 23. The reinforcing rib 232 can improve the connection strength between the extension arm 231 and the main body 23, and prevent the extension arm 231 from breaking and failing under complex forces such as vibration.

[0046] For example, in the present application, the reinforcing ribs 232 are formed in the form of rib plates, and two rib plates are provided on the upper surface of each extension arm 231. The two rib plates are arranged at intervals along the width direction of the extension arm 231 and are both connected to the main body 23. This can prevent cracks from easily forming on the side portions where the extension arm 231 and the main body 23 are connected, thereby improving the reliability of the connection between the extension arm 231 and the main body 23.

[0047] In addition, on the basis of any of the above embodiments, the line installation structure 100 further includes a fixing member, and the main body 23 is provided with a fixing hole 233, and the fixing member is used to connect with the fixing hole 233, so as to connect with the three-phase lead wire 30 provided on the motor end cover 10, so as to fix the three-phase lead wire 30 on the motor end cover 10. Specifically, a through hole is provided at the end of the three-phase lead wire 30, and when the three-phase lead wire 30 passes through the wire hole 21 of the insulating sheath 20, it is first connected to the connecting copper bar of the motor controller, and then the through hole is aligned with the fixing hole 233, and then the fixing member is passed through the through hole and plugged into the fixing hole 233 for fixing, so that the three-phase lead wire 30 can be further installed and fixed on the insulating sheath 20 with the help of the fixing member, and the risk of contact short circuit caused by displacement of the three-phase lead wire 30 under the action of vibration force is further prevented.

[0048] For example, the fixing member is a fixing bolt, and the fixing hole 233 is a screw hole.

[0049] The working stress environment of the motor is relatively complex, so in order to avoid the connection between the insulating sheath 20 and the motor end cover 10 from being broken, on the basis of any of the above embodiments, the insulating sheath 20 is provided with a reinforcement structure 24. For example, the reinforcement structure 24 can be a groove structure, or it can include a plurality of convex ribs distributed horizontally and vertically, and the convex ribs can be regular shapes such as straight and curved, or irregular shapes, so as to improve the structural strength of the insulating sheath 20, thereby ensuring that the insulating sheath 20 and the motor end cover 10 are assembled firmly and reliably.

[0050] In addition to the above, the present application also provides a car, including a car body and an electric motor, wherein the electric motor is mounted on the car body. The electric motor includes the circuit installation structure 100 as described in any of the above embodiments.

[0051] The car may be any one of an extended-range car, an electric car, etc.

[0052] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A line installation structure, characterized in that: include: A motor end cover, wherein the motor end cover is provided with a mounting hole; an insulating sheath, at least a portion of which is disposed in the mounting hole, and the insulating sheath is provided with a wire-passing hole; and A three-phase lead-out wire, the connection terminal of the three-phase lead-out wire passes through the wire hole from the inner side of the motor end cover to the outer side of the motor end cover.

2. The circuit installation structure according to claim 1, characterized in that: The insulating sheath comprises an inserting portion, the inserting portion is inserted into the mounting hole, and the outer peripheral wall of the inserting portion is tightly matched with the hole wall of the mounting hole.

3. The circuit installation structure according to claim 2, characterized in that: The insulating sheath also includes a main body, which is connected to the plug-in portion and buckled on the outer surface of the motor end cover. The main body is provided with an extension portion, and the main body is connected and fixed to the motor end cover through the extension portion.

4. The circuit installation structure according to claim 3, characterized in that: The line installation structure also includes a threaded component, the extension portion includes an extension arm, the extension arm is provided with a through hole, the motor end cover is provided with a threaded hole aligned with the through hole, and the threaded component passes through the through hole and is screwed into the threaded hole for fixation.

5. The circuit installation structure according to claim 4, characterized in that: The number of the extension arms is two, and the two extension arms are respectively connected to two ends of the main body in the length direction, and each of the extension arms is detachably assembled with the motor end cover through the correspondingly arranged threaded component.

6. The circuit installation structure according to claim 5, characterized in that: The extension portion further includes a reinforcing rib, which is disposed on the extension arm and connected to the main body.

7. The circuit installation structure according to claim 3, characterized in that: The line installation structure also includes a fixing piece, the main body is provided with a fixing hole, and the fixing piece is used to connect with the fixing hole to connect with the three-phase lead wire arranged on the motor end cover to fix the three-phase lead wire on the motor end cover.

8. The circuit installation structure according to claim 1, characterized in that: The insulating sheath is provided with a reinforcement structure.

9. An electric motor, characterized in that: It comprises the line installation structure as claimed in any one of claims 1 to 8.

10. An automobile, characterized in that: Comprising the electric motor as claimed in claim 9.

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