Motor controller and vehicle

Abstract

The utility model relates to a motor controller and a vehicle, the motor controller comprises a thin film capacitor, a connecting shell is formed on the thin film capacitor, and an accommodating cavity is formed in the connecting shell; the power module is provided with a connecting bar, and the connecting bar is right opposite to the connecting shell in the thickness direction; at least part of the fastening piece is contained in the containing cavity, and the fastening piece and the inner wall of the containing cavity are arranged in a spaced mode so that the fastening piece can move relatively in the horizontal direction of the thickness direction of the connecting shell. According to the motor controller provided by the utility model, at least part of the fastener is accommodated in the accommodating cavity, and the fastener and the inner wall of the accommodating cavity are arranged at an interval, so that the fastener can move in the accommodating cavity in a small range, the assembly difficulty of the connecting bar and the connecting shell is reduced, and the connection precision of the power module and the thin-film capacitor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, in particular to a motor controller and a vehicle. Background Art

[0002] In the related technology, when the film capacitor of the motor controller on the market is connected to the copper busbar of the power module, nuts are welded inside the copper busbar and then fixed on the outside with bolts. This connection method has extremely high requirements on the size matching of the two components and is difficult to process. It also increases the difficulty of connecting the film capacitor and the power module, reducing the assembly efficiency of the film capacitor and the power module. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a motor controller. According to the motor controller of the utility model, at least part of the fastener is accommodated in the accommodating cavity and the fastener is spaced apart from the inner wall of the accommodating cavity, so that the fastener can move in a small range in the accommodating cavity, thereby reducing the difficulty of assembling the connecting row and the connecting shell, and improving the accuracy and assembly efficiency of the connection between the power module and the film capacitor.

[0004] The utility model also provides a vehicle with the motor controller.

[0005] According to the utility model, the motor controller includes: a thin film capacitor, a connecting shell is formed on the thin film capacitor, and a accommodating cavity is formed inside the connecting shell; a power module, a connecting row is formed on the power module, and the connecting row is opposite to the connecting shell in the thickness direction; a fastener, at least a part of the fastener is accommodated in the accommodating cavity and the fastener is spaced apart from the inner wall of the accommodating cavity so as to be suitable for relative movement in the horizontal direction of the thickness direction of the connecting shell.

[0006] According to the utility model, the motor controller is provided with a receiving cavity for accommodating at least part of the fasteners through the inside of the connecting shell, and a connecting row is formed on the power module. At least part of the fasteners can pass through the connecting row and the connecting shell respectively and fix the connecting row and the connecting shell together. At least part of the fasteners are spaced apart from the inner wall of the receiving cavity, so that at least part of the fasteners can move relatively a certain distance in the receiving cavity along the thickness direction and the horizontal direction of the connecting shell, thereby reducing the difficulty of matching the fasteners, the connecting shell and the connecting row, reducing the difficulty of assembling the connecting row and the connecting shell, and improving the connection accuracy and assembly efficiency between the power module and the thin film capacitor.

[0007] According to some embodiments of the present invention, the connection shell structure is arranged in a plurality on the same side edge of the film capacitor, and the connection row is arranged in a plurality and corresponds one-to-one with the plurality of connection shells.

[0008] According to some embodiments of the present invention, the cross-section of the accommodating cavity is configured as a polygon.

[0009] According to some embodiments of the utility model, the fastener includes: a nut, which is accommodated in the accommodating cavity; a bolt, which passes through the connecting shell and is respectively fixed to the nut and the connecting row; wherein the outer peripheral surface of the nut forms a limiting wall, and the limiting wall is suitable for abutting against the inner wall of the accommodating cavity.

[0010] According to some embodiments of the utility model, the outer surface of the nut is provided with a plurality of sequentially connected limiting walls, and an arc transition surface is provided between two adjacent limiting walls.

[0011] According to some embodiments of the present invention, the diameter of the maximum circumscribed circle of the inner wall of the accommodating cavity is d1, the diameter of the minimum inscribed circle is d2, the diameter of the maximum circumscribed circle of the outer surface of the nut is d3, and the following conditions are satisfied: d1>d3>d2.

[0012] According to some embodiments of the utility model, the connecting shell includes: a bottom plate, on which a through hole suitable for bolts to pass through is formed; and a side plate, which is arranged on the outer periphery of the bottom plate and defines the accommodating cavity together with the bottom plate.

[0013] According to some embodiments of the utility model, the nut is provided with a mounting hole suitable for cooperating with the bolt, the diameter of the mounting hole is d4, the diameter of the through hole is d5 and satisfies: d4<d5<d3.

[0014] According to some embodiments of the present invention, a guide section is formed at the end of the bolt, and the diameter of the guide section gradually decreases in the direction toward the free end.

[0015] The vehicle according to the present utility model is briefly described below.

[0016] The vehicle according to the utility model is provided with a motor controller as described in any one of the above embodiments. Since the vehicle according to the utility model is provided with a motor controller as described in any one of the above embodiments, the connection accuracy of the thin film capacitor and the power module of the vehicle motor controller according to the present application is higher, so that the vehicle has higher stability, better safety and stronger reliability during operation.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of connecting a film capacitor and a power module according to an embodiment of the utility model;

[0020] Figure 2 is a front view of a film capacitor according to an embodiment of the utility model;

[0021] Figure 3 is a cross-sectional view of a connection shell according to an embodiment of the utility model;

[0022] Figure 4 It is a structural schematic diagram of a nut according to an embodiment of the utility model.

[0023] Reference numerals:

[0024] 100. Motor controller;

[0025] 11. Film capacitor; 12. Power module;

[0026] 21. Connecting shell; 22. Connecting row; 23. Nut; 101. Mounting hole; 231. Arc transition surface. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the related technology, when the film capacitor of the motor controller on the market is connected to the copper busbar of the power module, nuts are welded inside the copper busbar and then fixed on the outside with bolts. This connection method has extremely high requirements on the size matching of the two components, is difficult to process, and is prone to cause a high defect rate.

[0029] Reference below Figure 1-Figure 4 A motor controller according to an embodiment of the present invention is described.

[0030] According to the utility model, the motor controller 100 includes: a thin film capacitor 11, a power module 12 and a fastener. A connecting shell 21 is formed on the thin film capacitor 11, and a accommodating cavity is formed inside the connecting shell 21; a connecting row 22 is formed on the power module 12, and the connecting row 22 is opposite to the connecting shell 21 in the thickness direction; at least part of the fastener is accommodated in the accommodating cavity and the fastener is spaced apart from the inner wall of the accommodating cavity so as to be suitable for relative movement in the horizontal direction of the thickness direction of the connecting shell 21.

[0031] In some specific embodiments, the motor controller 100 is composed of a thin film capacitor 11, a power module 12 and a fastener. A connecting shell 21 is formed at the edge of the thin film capacitor 11, and a receiving cavity for accommodating at least part of the fastener is formed inside the connecting shell 21. A connecting row 22 is formed on the power module 12, and at least another part of the fastener can pass through the connecting row 22 and the connecting shell 21 respectively and fix the connecting row 22 and the connecting shell 21 together, thereby realizing the connection between the power module 12 and the thin film capacitor 11. At least part of the fasteners are spaced apart from the inner wall of the receiving cavity, so that there is a certain gap between at least part of the fasteners and the inner wall of the receiving cavity. At least part of the fasteners can move relative to each other for a certain distance in the thickness direction and horizontal direction of the connecting shell 21 in the receiving cavity, thereby reducing the difficulty of matching between the fasteners, the connecting shell 21 and the connecting row 22, reducing the difficulty of assembling the connecting row 22 and the connecting shell 21, and improving the accuracy and assembly efficiency of the connection between the power module 12 and the thin film capacitor 11.

[0032] According to the motor controller 100 of the utility model, a receiving cavity for accommodating at least part of the fasteners is formed inside the connecting shell 21, and a connecting row 22 is formed on the power module 12. At least part of the fasteners can pass through the connecting row 22 and the connecting shell 21 respectively and fix the connecting row 22 and the connecting shell 21 together. At least part of the fasteners are spaced apart from the inner wall of the receiving cavity, so that at least part of the fasteners can move relatively for a certain distance in the thickness direction and horizontal direction of the connecting shell 21 in the receiving cavity, thereby reducing the difficulty of matching the fasteners, the connecting shell 21 and the connecting row 22, reducing the difficulty of assembling the connecting row 22 and the connecting shell 21, and improving the connection accuracy and assembly efficiency between the power module 12 and the thin film capacitor 11.

[0033] According to some embodiments of the present invention, the connection shells 21 are configured to be multiple and arranged on the same side edge of the film capacitor 11 , and the connection row 22 is configured to be multiple and corresponds one-to-one to the multiple connection shells 21 .

[0034] In some specific embodiments, a plurality of connecting shells 21 are formed at the edge of one side opposite to the connecting row 22 of the thin film capacitor 11 and the power module 12, and the connecting row 22 is constructed to correspond one to one to the plurality of connecting shells 21, so that during the assembly process of the connecting row 22 of the thin film capacitor 11 and the power module 12, each connecting shell 21 and the corresponding connecting row 22 can be independently installed and adjusted, which is convenient for precise alignment and tightening, thereby reducing the assembly complexity of the connecting shells 21 and the connecting rows 22. At the same time, when maintaining the equipment or replacing faulty parts, a connecting shell 21 and a connecting row 22 with a failed connection can also be dealt with in a targeted manner without affecting the normal connection of other connecting pieces and the connecting shell 21. In addition, the connection of multiple connecting shells 21 and multiple connecting rows 22 can increase the connection points between the thin film capacitor 11 and the power module 12, thereby improving the stability and reliability of the connection between the thin film capacitor 11 and the power module 12.

[0035] According to some embodiments of the utility model, the cross-section of the accommodating cavity is constructed as a polygon. The polygonal construction of the accommodating cavity can set limits for the range of movement of the fastener. By matching the shape of the fastener with that of the accommodating cavity, the rotation angle or movement range of the fastener can be limited in a specific direction, ensuring that the fastener maintains the correct posture and position during the fastening process, and can effectively prevent the fastener from excessive rotation or disengagement, thereby improving the accuracy of assembly of the connecting shell 21 and the connecting row 22. At the same time, each side of the polygonal accommodating cavity can serve as a supporting surface for the fastener, which can effectively prevent the fastener from unnecessary tilting or shaking when it moves at a small angle, thereby enhancing the stability of the fastener during the assembly process.

[0036] According to some embodiments of the utility model, the fastener includes: a nut 23 and a bolt, the nut 23 is accommodated in the accommodating cavity; the bolt passes through the connecting shell 21 and is respectively fixed to the nut 23 and the connecting row 22; wherein the outer peripheral surface of the nut 23 forms a limiting wall, and the limiting wall is suitable for abutting against the inner wall of the accommodating cavity.

[0037] In some specific embodiments, the fastener consists of a nut 23 and a bolt. The nut 23 can be movably arranged in a small range in the accommodating cavity to facilitate alignment of the nut 23 with the bolt. The bolt passes through the connecting shell 21 and is fixed to the nut 23. The bolt and nut 23 cooperate to fix the connecting shell 21 and the connecting row 22 together, thereby realizing the connection between the thin film capacitor 11 and the power module 12. The outer peripheral surface of the nut 23 forms a limiting wall. During the assembly of the nut 23 and the bolt, the nut 23 can move in a small range and rotate a certain angle to facilitate the connection between the bolt and the nut 23. The limiting wall abuts against the inner wall of the accommodating cavity to limit the rotation angle of the nut 23 in the accommodating cavity, thereby ensuring the stability of the nut 23 and the bolt during the assembly process and ensuring the smooth connection between the nut 23 and the bolt.

[0038] According to some embodiments of the utility model, the outer surface of the nut 23 is provided with a plurality of limiting walls connected in sequence, and an arc transition surface 231 is provided between two adjacent limiting walls. The arc transition surface 231 can reduce the friction and wear between the nut 23 and the inner wall of the accommodating cavity during the assembly process, so that the nut 23 can float more smoothly, avoiding the nut 23 scratching the inner wall of the accommodating cavity during the floating process, extending the service life of the nut 23 and the accommodating cavity, and reducing the noise during the assembly process of the power module 12 and the thin film capacitor 11.

[0039] According to some embodiments of the utility model, the diameter of the maximum circumscribed circle of the inner wall of the accommodating cavity is d1, the diameter of the minimum inscribed circle is d2, the diameter of the maximum circumscribed circle of the outer surface of the nut 23 is d3, and satisfies: d1>d3>d2. When the diameter of the maximum circumscribed circle of the outer surface of the nut 23 is within the above range, the nut 23 can be rotated a certain angle in the accommodating cavity, and the nut 23 can be prevented from rotating 360° in the accommodating cavity, thereby ensuring the stability and reliability of the nut 23 and the bolt during assembly.

[0040] According to some embodiments of the present invention, the connecting shell 21 includes: a bottom plate and a side plate, wherein a through hole suitable for bolts to pass through is formed on the bottom plate; and the side plate is arranged on the outer periphery of the bottom plate and defines a receiving cavity with the bottom plate.

[0041] In some specific embodiments, the connecting shell 21 is composed of a bottom plate and side plates. The side plates are arranged on the periphery of the bottom plate. The side plates and the bottom plate jointly define an accommodating cavity. The nut 23 is arranged in the accommodating cavity. There is a certain small gap between the bottom plate and the side plates and the nut 23 respectively. While ensuring that the nut 23 moves in the accommodating cavity, the bottom plate and the side plates can also play a role in blocking the movement, preventing the nut 23 from escaping from the accommodating cavity, thereby improving the stability and reliability of the nut 23 in the accommodating cavity. A through hole is formed on the bottom plate, and the bolt can pass through the through hole to connect with the nut 23, thereby realizing the connection between the bolt and the nut 23.

[0042] According to some embodiments of the utility model, a mounting hole 101 suitable for cooperating with a bolt is provided on the nut 23, the diameter of the mounting hole 101 is d4, the diameter of the through hole is d5 and satisfies: d4<d5<d3, and the diameter of the through hole is set within the above range, so that the through hole can allow the bolt to be fully inserted into the mounting hole 101 of the nut 23, ensuring the correct and stable assembly of the bolt and the nut 23, and can also ensure that the nut 23 cannot easily slip out of the through hole before it is completely fixed, and the relative setting position of the nut 23 can remain unchanged even during the operation of the motor controller 100 or during slight vibration, thereby improving the stability and reliability of the nut 23 in the accommodating cavity.

[0043] According to some embodiments of the present invention, a guide section is formed at the end of the bolt, and the diameter of the guide section gradually decreases in the direction toward the free end. The guide section can help the bolt to be more easily aligned with the mounting hole 101 of the nut 23, especially when at least part of the inner through-hole edge of the mounting hole 101 of the nut 23 is blocked, thereby improving the assembly efficiency of the bolt and the nut 23. The guide section with a gradually decreasing diameter acts as a natural guiding device, so that the bolt can be smoothly inserted into the target position set on the nut 23, reducing the resistance and possibility of misalignment during the assembly of the bolt and the nut 23, and improving the assembly accuracy and reliability of the film capacitor 11 and the power module 12. At the same time, by gradually guiding the bolt to extend into the mounting hole 101 of the nut 23 by the guide section, it can also be ensured that the bolt is gradually axially aligned during the tightening process, avoiding inaccurate assembly or thread damage caused by initial misalignment, thereby improving the overall assembly accuracy and efficiency.

[0044] The vehicle according to the present utility model is briefly described below.

[0045] The vehicle according to the utility model is provided with a motor controller 100 as described in any one of the above embodiments. Since the vehicle according to the utility model is provided with a motor controller 100 as described in any one of the above embodiments, the connection accuracy of the thin film capacitor 11 and the power module 12 of the vehicle motor controller 100 according to the present application is higher, so that the vehicle has higher stability, better safety and stronger reliability during operation.

[0046] In the description of the present invention, it should be understood that 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0048] In the description of the present invention, "plurality" means two or more.

[0049] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0050] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor controller, characterized in that: include: A thin film capacitor (11), wherein a connection shell (21) is formed on the thin film capacitor (11), and a receiving cavity is formed inside the connection shell (21); A power module (12), wherein a connection row (22) is formed on the power module (12), and the connection row (22) is directly opposite to the connection shell (21) in the thickness direction; A fastener, at least part of which is accommodated in the accommodating cavity and the fastener is spaced apart from the inner wall of the accommodating cavity so as to be suitable for relative movement in a direction horizontal to the thickness direction of the connecting shell (21).

2. The motor controller according to claim 1, characterized in that: The connection shells (21) are structured to be arranged in plurality on the same side edge of the film capacitor (11), and the connection rows (22) are arranged in plurality and correspond one-to-one to the plurality of connection shells (21).

3. The motor controller according to claim 2, characterized in that: The cross section of the accommodating cavity is configured as a polygon.

4. The motor controller according to claim 3, characterized in that: The fastener comprises: a nut (23), wherein the nut (23) is received in the receiving cavity; Bolts, the bolts pass through the connection shell (21) and are respectively fixed to the nuts (23) and the connection row (22); wherein The outer peripheral surface of the nut (23) forms a limiting wall, and the limiting wall is suitable for abutting against the inner wall of the accommodating cavity.

5. The motor controller according to claim 4, characterized in that: The outer surface of the nut (23) is provided with a plurality of sequentially connected limiting walls, and an arc transition surface (231) is provided between two adjacent limiting walls.

6. The motor controller according to claim 4, characterized in that: The diameter of the maximum circumscribed circle of the inner wall of the accommodating cavity is d1, the diameter of the minimum inscribed circle is d2, the diameter of the maximum circumscribed circle of the outer surface of the nut (23) is d3, and the following conditions are satisfied: d1>d3>d2.

7. The motor controller according to claim 4, characterized in that: The connecting shell (21) comprises: A bottom plate, wherein a through hole suitable for the bolt to pass through is formed on the bottom plate; The side plate is arranged on the outer periphery of the bottom plate and defines the accommodating cavity with the bottom plate.

8. The motor controller according to claim 7, characterized in that: The nut (23) is provided with a mounting hole (101) suitable for cooperating with the bolt, the diameter of the mounting hole (101) is d4, the diameter of the through hole is d5 and satisfies: d4<d5<d3.

9. The motor controller according to claim 4, characterized in that: A guide section is formed at the end of the bolt, and the diameter of the guide section gradually decreases in a direction toward the free end.

10. A vehicle, characterized in that: A motor controller comprising any one of claims 1-9.

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