Motor controller and electric drive system

Abstract

The utility model relates to a motor controller and an electric drive system, and the motor controller comprises a controller housing which is at least provided with an opening at the top; the thin film capacitor is arranged in the controller shell; the filter comprises a first filtering assembly and a second filtering assembly, the first filtering assembly is arranged in the controller shell and electrically connected with the thin-film capacitor, and the second filtering assembly is arranged in the vertically upward projection range of the electrical connection position of the first filtering assembly and the thin-film capacitor; and the fuse is connected with the first filtering assembly and the second filtering assembly. The filter is divided into the first filtering assembly and the second filtering assembly which are split through the fuse, and the problem that the filter cannot be stably and effectively connected with the thin-film capacitor due to interference can be effectively solved.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a motor controller and an electric drive system. Background Art

[0002] The motor controller usually includes a controller housing and a filter and a film capacitor arranged in the controller housing, and the film capacitor is electrically connected to the filter; when connected, the film capacitor and the filter are overlapped by a copper bar, and the copper bars are locked and fixed to the controller housing by connecting bolts. At the same time, a branch socket is usually provided on the controller housing, and the branch socket is used to connect the high-voltage connector, and the high-voltage connector is plugged into the branch socket to be electrically connected to the filter. And between the high-voltage connector and the filter, a fuse is also provided. However, due to the limited arrangement space of the filter in the controller housing, the number of the aforementioned components connected to the filter is relatively large, and it is easy to cause mutual interference between the components during the arrangement process. For example, in order to realize the arrangement of the fuse on the filter, the filter interferes with the connection position of the fuse with the film capacitor at the installation position of the fuse. At this time, the connecting bolts when the filter is connected to the film capacitor are difficult to tighten, thereby causing the filter to be unable to form a stable and effective connection with the film capacitor. Utility Model Content

[0003] Based on this, the present application provides a motor controller and an electric drive system to improve the problem in the prior art that the installation position of the filter at the fuse interferes with the connection position between the filter and the thin-film capacitor, making it impossible for the filter to form a stable and effective connection with the thin-film capacitor.

[0004] In a first aspect, the present application provides a motor controller, the motor controller comprising:

[0005] A controller housing, at least the top of which is open;

[0006] A film capacitor, which is arranged in the controller housing;

[0007] A filter, comprising a first filter component and a second filter component, wherein the first filter component is disposed in the controller housing and electrically connected to the film capacitor, and the second filter component is disposed within a vertically upward projection range of a position where the first filter component is electrically connected to the film capacitor;

[0008] A fuse connects the first filter component and the second filter component.

[0009] In one of the embodiments, a first connecting copper bar is provided on the thin film capacitor, and a second connecting copper bar is provided on the first filter component. The first connecting copper bar is overlapped with the second connecting copper bar and is fastened and fixed by a first connecting bolt, and the first connecting bolt is connected to the first filter component.

[0010] In one embodiment, the overlapping portion between the first connecting copper bar and the second connecting copper bar is horizontally arranged.

[0011] In one of the embodiments, a third connecting copper bar is further provided on the first filter component, and the two ends of the fuse are respectively overlapped on the third connecting copper bar and the second filter component, and are locked and fixed by a second connecting bolt, and the second connecting bolt is connected to the first filter component or the second filter component.

[0012] In one of the embodiments, the safety level is disposed within the controller housing.

[0013] In one embodiment, the second filter assembly is connected to the first filter assembly via a third connecting bolt.

[0014] In one of the embodiments, the first filter component and the film capacitor are arranged side by side in the horizontal direction inside the controller housing.

[0015] In one of the embodiments, the film capacitor is connected to the controller housing via capacitor fixing bolts.

[0016] In one of the embodiments, the first filter assembly is connected to the controller housing via a filter fixing bolt.

[0017] In a second aspect, the present application provides an electric drive system, which includes a motor and any motor controller provided in the present application, and the motor controller is used to control the motor.

[0018] The present application separates the filter into a split first filter component and a second filter component through a fuse, and arranges the second filter component within the vertical upward projection range of the connection position between the first filter component and the thin-film capacitor. After completing the connection between the first filter component and the thin-film capacitor, the second filter component and the first filter component can be assembled into a filter to avoid interference between the filter and the connection position between the filter and the thin-film capacitor at the installation position of the fuse. Therefore, the present application can effectively improve the problem of the filter being unable to form a stable and effective connection with the thin-film capacitor due to interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a motor controller provided in Embodiment 1 of the present application;

[0020] Figure 2 A schematic diagram of the structure of a thin film capacitor and a filter of a motor controller provided in Example 1 of the present application;

[0021] Figure 3An exploded diagram of the filter of the motor controller provided in Example 1 of the present application.

[0022] Figure numerals: 100, controller housing; 200, film capacitor; 210, first connecting copper bus; 300, filter; 310, first filter component; 311, second connecting copper bus; 312, third connecting copper bus; 320, second filter component; 400, fuse; 410, fuse connecting copper bus; 500, first connecting bolt; 600, second connecting bolt; 700, third connecting bolt; 800, capacitor fixing bolt; 900, filter fixing bolt. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention.

[0025] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0026] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential" and the like in this specification are based on the directions or positional relationships shown in the drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] Embodiment 1

[0028] Embodiment 1 of the present application provides a motor controller, such as Figures 1 to 3 As shown, the motor controller includes:

[0029] A controller housing 100, at least the top of which is open;

[0030] A film capacitor 200 is disposed in the controller housing 100;

[0031] The filter 300 includes a first filter component 310 and a second filter component 320. The first filter component 310 is disposed in the controller housing 100 and connected to the film capacitor 200. The second filter component 320 is disposed within the vertical upward projection range of the connection position between the first filter component 310 and the film capacitor 200.

[0032] The fuse 400 connects the first filter component 310 and the second filter component 320 .

[0033] like Figure 1 As shown, in this embodiment, it is exemplarily explained that the controller housing 100 can be set as a cast aluminum part, which can be cast separately so that the motor controller and the motor form a split structure; it can also be cast with the motor housing so that the motor controller is integrated on the motor. In the specific implementation, it can be reasonably selected according to actual needs. The controller housing 100 is at least open at the top, so that structures such as the film capacitor 200 and the filter 300 can be arranged in the controller housing 100. The motor controller can also include a housing cover, and the housing cover can be sealed at the top opening of the controller housing 100; and the bottom of the controller housing 100 can also be directly set to be closed. Of course, in some embodiments, the bottom of the controller housing 100 can also be set to an opening, and the bottom opening of the controller housing 100 can be sealed by a housing lower cover.

[0034] like Figure 2 and Figure 3 As shown, in the present embodiment, the filter 300 can be designed in a split type, which can be divided into two parts at the installation position of the insurance 400, the two parts being the first filter component 310 and the second filter component 320, and the two ends of the insurance 400 are respectively connected to the first filter component 310 and the second filter component 320. The first filter component 310 and the second filter component 320 can both include injection moldings and components arranged in the injection moldings, for example, a magnetic ring and a copper bar can be arranged in the injection molding of the first filter component 310, and a screw sleeve can be arranged in the injection molding of the second filter component 320. The first filter component 310 can be connected to the controller housing 100, and is arranged close to the film capacitor 200 fixed in the controller housing 100. The first filter component 310 is connected to the film capacitor 200, and can be specifically connected through a copper bar to simultaneously realize the electrical connection between the first filter component 310 and the film capacitor 200. The second filter component 320 is arranged within the vertical upward projection range of the connection position between the first filter component 310 and the thin film capacitor 200 , that is, the second filter component 320 is arranged directly above the connection position between the first filter component 310 and the thin film capacitor 200 .

[0035] like Figures 1 to 3As shown, when assembling the motor controller, the film capacitor 200 is first fixed in the controller housing 100, and then the first filter component 310 is connected to the controller housing 100; when arranging the first filter component 310, the first filter component 310 is connected to the film capacitor 200. Then the second filter component 320 is arranged just above the connection position of the first filter component 310 and the film capacitor 200, and the first filter component 310 and the second filter component 320 are connected through the fuse 400.

[0036] It is not difficult to understand that the present application separates the filter 300 into a split first filter component 310 and a second filter component 320 through the fuse 400, and arranges the second filter component 320 within the vertical upward projection range of the connection position between the first filter component 310 and the thin film capacitor 200. After completing the connection between the first filter component 310 and the thin film capacitor 200, the second filter component 320 and the first filter component 310 can be assembled into a filter 300 to avoid interference between the filter 300 and the connection position between the filter 300 and the thin film capacitor 200 at the installation position of the fuse 400. Therefore, the present application can effectively improve the problem that the filter 300 cannot form a stable and effective connection with the thin film capacitor 200 due to interference.

[0037] Specifically, a first connecting copper bar 210 is provided on the film capacitor 200, and a second connecting copper bar 311 is provided on the first filter component 310. The first connecting copper bar 210 and the second connecting copper bar 311 are overlapped and locked and fixed by a first connecting bolt 500. The first connecting bolt 500 is connected to the first filter component 310 or the controller housing 100.

[0038] like Figure 2 As shown, in this embodiment, it is exemplarily explained that two first connecting copper bars 210 can be arranged in parallel and at intervals, and the two first connecting copper bars 210 can be arranged in parallel and at intervals to insulate each other and avoid short circuit. The second connecting copper bar 311 on the first filter component 310 is connected to the first connecting copper bar 210 in a one-to-one correspondence; when connected, the second connecting copper bar 311 overlaps the first connecting copper bar 210 and is locked and fixed by the first connecting bolt 500. The overlapping parts of the first connecting copper bar 210 and the second connecting copper bar 311 can be both provided with perforations for the rod of the first connecting bolt 500 to pass through. When the rod of the first connecting bolt 500 passes through the first connecting copper bar 210 and the second connecting copper bar 311, it can be threadedly connected to the injection molded part of the first filter component 310, or it can be threadedly connected to the controller housing 100; this embodiment is the former. The first connecting bolt 500 can be configured as a bolt with a hexagonal washer head to increase the contact area between the first connecting bolt 500 and the first connecting copper bar 210 or the second connecting copper bar 311 to ensure the locking and fixing effect.

[0039] It can be understood that in this embodiment, the first connecting copper bar 210 and the second connecting copper bar 311 are locked and fixed on the first filter component 310 or the controller housing 100 by the first connecting bolt 500, so as to achieve a stable and effective connection between the film capacitor 200 and the first filter component 310; at the same time, it is easy to operate and convenient during assembly.

[0040] More specifically, the overlapping portion between the first connecting copper bus 210 and the second connecting copper bus 311 is arranged horizontally.

[0041] like Figure 2 As shown, in this embodiment, the first connecting copper bar 210 can be first arranged in a vertical plane, and can be set to a horizontal inverted "L" shape, with one end extending vertically upward; then the end is horizontally folded and arranged in a horizontal plane. The second connecting copper bar 311 can also be arranged in a horizontal plane, and can be overlapped on one side of the top of the first connecting copper bar 210. At this time, the first connecting bolt 500 can pass through the first connecting copper bar 210 and the second copper bar from top to bottom and be connected to the injection molded part of the first filter component 310, that is, the axis of the first connecting bolt 500 can remain vertical.

[0042] It can be understood that this embodiment makes it easy to operate the first connecting bolt 500 by setting the overlapping part of the first connecting copper bar 210 and the second connecting copper bar 311 to be horizontal; at the same time, it is convenient to tighten the first bolt to ensure the stability of the connection between the first connecting copper bar 210 and the second connecting copper bar 311.

[0043] Specifically, a third connecting copper bus 312 is also provided on the first filter component 310, and the two ends of the fuse 400 are respectively overlapped on the third connecting copper bus 312 and the second filter component 320, and are locked and fixed by a second connecting bolt 600, and the second connecting bolt 600 is connected to the first filter component 310 or the second filter component 320.

[0044] like Figure 3As shown, in this embodiment, it is exemplarily explained that, similarly, two third connecting copper bars 312 can be provided, and the two third connecting copper bars 312 are both injection molded in the injection molded part of the first filter assembly 310, and are arranged at intervals to avoid short circuit. The insurance 400 can be set as a cylindrical structure, and the insurance connecting copper bars 410 can be provided at both ends. The number of insurances 400 corresponds to the number of the third connecting copper bars 312, and the two insurance connecting copper bars 410 of the same insurance 400 are overlapped on the third connecting copper bar 312 and the second filter assembly 320, respectively, and are locked and fixed by the second connecting bolt 600. The insurance connecting copper bar 410 and the third connecting copper bar 312 are both provided with a perforation for the rod of the second connecting bolt 600 to pass through, and the rod of the second connecting bolt 600 passes through the insurance connecting copper bar 410 and the third connecting copper bar 312 and is threadedly connected to the injection molded part of the first filter assembly 310 or the second filter assembly 320. In more detail, the second connecting bolt 600 can be threadedly connected with the screw sleeve injection-molded on the second filter assembly 320 to ensure a stable connection. The second connecting bolt 600 can be configured as a bolt with a round head, and the top of the round head can be provided with a slot, a cross slot, etc., to facilitate operation of the second connecting bolt 600.

[0045] It can be understood that the second connecting bolt 600 of the present embodiment connects the two ends of the safety 400 to the third connecting copper bar 312 and the second filter component 320 respectively, and is locked and fixed on the first filter component 310 and the second filter component 320, so as to achieve a stable and effective connection between the first filter component 310 and the second filter component 320 to form a filter 300 with a safety 400; at the same time, it is easy to operate, convenient and fast during assembly.

[0046] More specifically, the fuse 400 is horizontally disposed within the controller housing 100 .

[0047] like Figure 2 and Figure 3 As shown, in this embodiment, the third connecting copper bar 312 can be flush with the mounting surface of the second filter assembly 320 for installing the fuse 400, so that the two insurance connecting copper bars 410 can be arranged horizontally; when the fuse 400 is connected to the third connecting copper bar 312 and the second filter assembly 320, the fuse 400 can remain horizontal. At the same time, the two fuses 400 can also be arranged in parallel in the controller housing 100.

[0048] It can be understood that this embodiment makes it easy to operate the second connecting bolt 600 by horizontally overlapping the fuse 400 with the third connecting copper bus 312 and the second filter assembly 320; at the same time, it is convenient to tighten the second bolt to ensure the stability of the connection between the fuse 400, the third connecting copper bus 312 and the second filter assembly 320.

[0049] Specifically, the second filter assembly 320 is disposed on the first filter assembly 310 through the third connecting bolt 700 .

[0050] like Figure 2 and Figure 3 As shown, in this embodiment, it is exemplarily explained that the second filter component 320 is arranged on the first filter, and the injection molded part of the second filter component 320 can be fixed on the injection molded part of the first filter component 310 through the third connecting bolt 700. At this time, the injection molded part of the second filter component 320 is provided with a through hole for the rod of the third connecting bolt 700 to pass through, and the rod of the third connecting bolt 700 passes through the injection molded part of the second filter component 320 and is threadedly connected to the injection molded part of the first filter component 310. When the third connecting bolt 700 is tightened, the injection molded part of the second filter component 320 can be locked and fixed on the first filter component 310.

[0051] It can be understood that in this embodiment, the second filter component 320 is locked and fixed on the first filter component 310 by the third connecting bolt 700. After the second filter component 320 is fixed, the second filter component 320 can be connected to the first filter component 310 through the safety 400, which is more convenient; at the same time, the stability of the connection between the second filter component 320 and the first filter component 310 is improved.

[0052] Specifically, the first filter component 310 and the film capacitor 200 are arranged side by side in the horizontal direction inside the controller housing 100 .

[0053] like Figure 1 As shown, in this embodiment, it is exemplarily explained that in order to avoid further interference, the first filter component 310 and the film capacitor 200 can be arranged side by side in the horizontal direction in the controller housing 100. The film capacitor 200 can be set as a flat structure with a rectangular cross-section, and the connection position between the film capacitor 200 and the first filter component 310 can be a corner of the film capacitor 200, and can be set at one end of the first filter component 310; and the second filter component 320 can be stacked with the first filter component 310 and arranged just above the connection position.

[0054] It can be understood that, in this embodiment, by horizontally arranging the first filter component 310 and the film capacitor 200 side by side in the controller housing 100, the space utilization rate in the controller housing 100 can be improved, and the interference between the components in the controller housing 100 can be minimized.

[0055] Specifically, the film capacitor 200 is connected to the controller housing 100 via a capacitor fixing bolt 800 .

[0056] like Figure 1 and Figure 2As shown, in this embodiment, for example, a protrusion may be provided in the controller housing 100, a threaded hole may be provided on the protrusion, and a first lug may be provided on the film capacitor 200, the first lug may abut against the protrusion, and be locked and fixed by the capacitor fixing bolt 800. The first lug may be provided with a through hole for the capacitor fixing bolt 800 to pass through, and the rod of the capacitor fixing bolt 800 may pass through the first lug and be threaded in the threaded hole. Several first lugs may be provided at intervals on the outer edge of the film capacitor 200 to improve the stability of the film capacitor 200 when it is fixed in the controller housing 100.

[0057] It can be understood that in this embodiment, the film capacitor 200 is connected to the controller housing 100 by means of the capacitor fixing bolt 800 , so as to facilitate fixing the film capacitor 200 .

[0058] Specifically, the first filter assembly 310 is connected to the controller housing 100 via a filter fixing bolt 900 .

[0059] like Figure 1 and Figure 2 As shown, in this embodiment, it is exemplarily explained that, similarly, the protrusion in the controller housing 100 can also be used to fix the first filter assembly 310, and the first filter assembly 310 can be provided with a second lug, which can also abut against the protrusion and can be locked and fixed by the filter fixing bolt 900. Similarly, the second lug can be provided with a through hole for the filter fixing bolt 900 to pass through, and the rod of the filter fixing bolt 900 can pass through the second lug and be threadedly connected in the threaded hole.

[0060] It can be understood that in this embodiment, the first filter component 310 is connected to the controller housing 100 by means of the filter fixing bolts 900 , so as to facilitate fixing the first filter component 310 .

[0061] The implementation principle of a motor controller provided in the first embodiment of the present application is:

[0062] During assembly, the film capacitor 200 is first fixed in the controller housing 100 by the capacitor fixing bolt 800, and then the first filter assembly 310 is fixed in the controller housing 100 by the filter fixing bolt 900; when fixing the first filter assembly 310, the second connecting copper bar 311 is overlapped with the first connecting copper bar 210, and then the first connecting copper bar 210 and the second connecting copper bar 311 are locked and fixed on the injection molded part of the first filter assembly 310 by the first connecting bolt 500. Then the second filter assembly 320 is fixed to the first filter assembly 310 by the third connecting bolt 700, so that the second filter assembly 320 is arranged within the vertical upward projection range of the connection position of the first filter assembly 310 and the film capacitor 200. Then the second filter assembly 320 is connected to the first filter assembly 310 by the insurance 400. When fixing the fuse 400 , the fuse connecting copper bar 410 and the third connecting copper bar 312 or the fourth connecting copper bar are locked and fixed on the injection molded part of the first filter component 310 or the second filter component 320 by the second connecting bolt 600 .

[0063] The present application separates the filter 300 into a split first filter component 310 and a second filter component 320 through a fuse 400, and arranges the second filter component 320 within the vertical upward projection range of the connection position between the first filter component 310 and the thin-film capacitor 200. After the connection between the first filter component 310 and the thin-film capacitor 200 is completed, the second filter component 320 and the first filter component 310 can be assembled into a filter 300 to avoid interference between the filter 300 and the connection position between the filter 300 and the thin-film capacitor 200 at the installation position of the fuse 400. Therefore, the present application can effectively improve the problem that the filter 300 cannot form a stable and effective connection with the thin-film capacitor 200 due to interference.

[0064] Embodiment 2

[0065] Embodiment 2 of the present application provides an electric drive system, which includes a motor and any motor controller provided in the present application, and the motor controller is used to control the motor.

[0066] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above 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.

[0067] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. 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 of the present application shall be subject to the attached claims.

Claims

1. A motor controller, characterized in that: The motor controller comprises: A controller housing (100) having at least an open top; A film capacitor (200) is arranged in the controller housing (100); A filter (300), comprising a first filter component (310) and a second filter component (320), wherein the first filter component (310) is arranged in the controller housing (100) and is electrically connected to the thin film capacitor (200), and the second filter component (320) is arranged within a vertically upward projection range of a position where the first filter component (310) is electrically connected to the thin film capacitor (200); A fuse (400) is provided to connect the first filter component (310) and the second filter component (320).

2. The motor controller according to claim 1, characterized in that: The film capacitor (200) is provided with a first connecting copper bar (210), and the first filter component (310) is provided with a second connecting copper bar (311); the first connecting copper bar (210) and the second connecting copper bar (311) are overlapped and locked and fixed by a first connecting bolt (500); the first connecting bolt (500) is connected to the first filter component (310).

3. The motor controller according to claim 2, characterized in that: The overlapping portion between the first connecting copper busbar (210) and the second connecting copper busbar (311) is arranged horizontally.

4. The motor controller according to claim 1, characterized in that: The first filter component (310) is also provided with a third connecting copper bar (312), and the two ends of the fuse (400) are respectively overlapped on the third connecting copper bar (312) and the second filter component (320), and are locked and fixed by a second connecting bolt (600), and the second connecting bolt (600) is connected to the first filter component (310) or the second filter component (320).

5. The motor controller according to claim 4, characterized in that: The fuse (400) is horizontally arranged in the controller housing (100).

6. The motor controller according to claim 1, characterized in that: The second filter assembly (320) is connected to the first filter assembly (310) via a third connecting bolt (700).

7. The motor controller according to claim 1, characterized in that: The first filter component (310) and the film capacitor (200) are arranged side by side in a horizontal direction inside the controller housing (100).

8. The motor controller according to claim 1, characterized in that: The film capacitor (200) is connected to the controller housing (100) via a capacitor fixing bolt (800).

9. The motor controller according to claim 1, characterized in that: The first filter assembly (310) is connected to the controller housing (100) via a filter fixing bolt (900).

10. An electric drive system, characterized in that: The electric drive system comprises a motor and a motor controller as described in any one of claims 1 to 9, wherein the motor controller is used to control the motor.

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