Electric vehicle controller with circuit board installed without screws

Abstract

The utility model discloses an electric vehicle controller with circuit boards installed without screws, which comprises a controller shell, a first circuit board and a second circuit board are arranged in the controller shell, a plurality of positioning columns are arranged on the inner wall of the controller shell, and the positioning columns respectively penetrate through the first circuit board and the second circuit board. A pressing cap is movably arranged at the free end of the positioning column and is made of nylon materials, a convex rib with inclination is arranged on the positioning column, and the pressing cap and the positioning column are in over-hard fit for pressing. The pressing function of the circuit boards is achieved through the positioning columns and the pressing caps, screw-free installation of the circuit boards is achieved, cost is saved, meanwhile, the two circuit boards are arranged in a tiled mode, installation and maintenance are convenient, and a larger space in the controller can be conveniently used for wiring.

Description

Technical Field

[0001] The utility model relates to an electric vehicle controller, in particular to an electric vehicle controller with a screw-free installation of a circuit board. Background Art

[0002] As the core component of an electric vehicle, the main component inside the controller is a circuit board. Generally, there are double circuit boards in the controller. In the prior art, the circuit board is generally installed in the controller housing by screws. For a controller with double circuit boards, the screw installation method not only has a high cost, but also can damage the circuit board when screwing in or out the screws; moreover, the double circuit boards are generally installed in an up-and-down stacked manner, and there are components on the circuit board, and a safety distance needs to be maintained between the circuit board and the controller housing. Such an installation method results in a large occupation of the height space inside the controller, and at the same time, it is not convenient for maintenance and disassembly. Content of the Utility Model

[0003] To solve the deficiencies of the prior art, the present application provides an electric vehicle controller with a screw-free installation of a circuit board, including a controller housing. A first circuit board and a second circuit board are arranged inside the controller housing. A plurality of positioning posts are arranged on the inner wall of the controller housing. The plurality of positioning posts respectively penetrate through the first circuit board and the second circuit board, and a pressing cap is movably arranged at the free end of the positioning post.

[0004] Further, the positioning post includes a fixing portion and a connecting portion. The fixing portion is fixedly connected to the inner wall of the controller housing, and the connecting portion penetrates through the first circuit board and the second circuit board.

[0005] Further, a supporting boss for supporting the first circuit board and the second circuit board is provided on the fixing portion.

[0006] Further, a plurality of ribs are circumferentially and spacedly arranged on the outer side of the connecting portion.

[0007] Further, the ribs are inclined from the free end of the connecting portion towards the fixing portion.

[0008] Further, a positioning inclined surface is provided at the free end of the rib.

[0009] Further, the first circuit board is an aluminum-based power board, and the second circuit board is an FR4 control board. The aluminum-based power board and the FR4 control board are arranged side by side in the controller housing.

[0010] Further, a pressing hole is provided inside the pressing cap, and the pressing hole is in interference fit with the positioning post.

[0011] Further, the pressing cap is a nylon pressing cap.

[0012] Further, wire outlet openings are provided on the controller housing on both sides of the aluminum-based power board and the FR4 control board.

[0013] The advantages of this application are as follows: The provided electric vehicle controller realizes the pressing function of the circuit board through the positioning posts and the pressing caps, achieving screwless installation of the circuit board, saving costs. At the same time, the two circuit boards are arranged flatly, making installation and maintenance more convenient, and also facilitating more space inside the controller for wire routing. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of an embodiment of an electric vehicle controller with screwless installation of the circuit board in this application;

[0015] Figure 2 It is Figure 1 the A-A cross-sectional view in

[0016] Figure 3 It is Figure 2 the schematic structural diagram of the positioning post in

[0017] Figure 4 It is Figure 2 the schematic structural diagram of the pressing cap in

[0018] The markings in the figure are: 10, controller housing; 11, power aluminum substrate; 12, FR4 control board; 13, positioning post, 131, fixing part, 132, connecting part, 133, rib, 134, positioning inclined plane, 135, supporting boss; 14, pressing cap, 141, pressing hole; 15, first wire outlet opening; 16, second wire outlet opening; 17, wire pressing plate; 18, FPC. Detailed Embodiments

[0019] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this application.

[0020] It should be noted that in the description of the present application, the claims and the above-mentioned drawings, the terms "first", "second", etc. are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so as to implement the embodiments of the present application described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0021] In the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0022] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above-mentioned terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to specific circumstances.

[0023] In addition, the terms "installed", "set", "provided with", "connected", "connected to", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0024] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] See Figures 1-4, this embodiment provides an electric vehicle controller with screwless circuit board installation, including a controller housing 10. To facilitate viewing the internal structure of the controller, the illustrated controller housing 10 is a half housing. For the convenience of internal structure installation, general controller housings are divided into two detachable parts. There are two groups of circuit boards arranged in the controller housing 10, namely a power aluminum substrate 11 and an FR4 control board 12. Among them, MOS tubes are arranged on the power aluminum substrate 11. A plurality of positioning posts 13 are arranged on the inner wall of the controller housing. The plurality of positioning posts 13 respectively penetrate through the power aluminum substrate 11 and the FR4 control board 12, and a pressing cap 14 is movably arranged at the free end of the positioning post 13.

[0026] Specifically, the power aluminum substrate 11 and the FR4 control board 12 adopt a side-by-side and flat laying design, instead of the conventional up-and-down stacking method. The two boards are connected by an FPC, that is, the two boards are connected by a flexible cable, which is convenient for product installation and maintenance, and also convenient for there to be more space in the controller for wiring.

[0027] According to the specifications and shapes of the power aluminum substrate 11 and the FR4 control board 12, the power aluminum substrate 11 is pressed and assembled with four groups of positioning posts and pressing caps, and the positioning posts are arranged at the four corner positions; the FR4 control board 12 is pressed and assembled with two groups of positioning posts and pressing caps, and the positioning posts are arranged at the diagonal positions.

[0028] More specifically, the positioning post 13 is integrally formed with the inner wall of the controller housing. The positioning post 13 includes a fixing part 131 and a connecting part 132. The fixing part 131 is a cylindrical structure, and the connecting part 132 also adopts a cylindrical structure. A plurality of ribs 133 are arranged at intervals on its outer side. The ribs 133 are inclined from the free end of the connecting part towards the fixing part, that is, the outer diameter of the connecting part plus the ribs gradually becomes larger from the free end towards the fixing part, so as to facilitate the assembly of the circuit board.

[0029] There is a supporting boss 135 on the end face of the fixing part 131 for supporting the circuit board. The outer diameter of the bottom of the rib 133 is smaller than the diameter of the fixing part 131, and the position on the end face of the fixing part where there are extra ribs forms the supporting boss 135.

[0030] Specifically, a pressing hole 141 is opened in the pressing cap 14. The inner diameter of the pressing hole 141 is about 0.2 mm smaller than the outer diameter of the bottom of the rib 133. The pressing cap 14 and the positioning post 13 are made of elastic plastic. In this embodiment, both are made of nylon. The pressing cap 14 and the positioning post 13 are in interference fit to achieve the pressing of the circuit board.

[0031] A first wire outlet 15 and a second wire outlet 16 are respectively arranged at both ends of the controller housing 10. The first wire outlet 15 is used as the power supply and phase wire outlet, and the second wire outlet 16 is used as the small signal wire outlet. Pressing plates 17 are arranged at both wire outlets.

[0032] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An electric vehicle controller with screwless installation for a circuit board, comprising a controller housing, wherein a first circuit board and a second circuit board are arranged in the controller housing, and it is characterized in that: The first circuit board is an aluminum-based power board, and the second circuit board is an FR4 control board. The aluminum-based power board and the FR4 control board are laid side by side in the controller housing. A plurality of positioning posts are provided on the inner wall of the controller housing, and the plurality of positioning posts respectively penetrate through the first circuit board and the second circuit board. A pressing cap is movably arranged at the free end of the positioning post.

2. The electric vehicle controller with screwless installation on the circuit board according to claim 1, characterized in that: The positioning post includes a fixing portion and a connecting portion. The fixing portion is fixedly connected to the inner wall of the controller housing, and the connecting portion penetrates through the first circuit board and the second circuit board.

3. The electric vehicle controller with screwless installation of the circuit board according to claim 2, characterized in that: The fixing portion is provided with a supporting boss for supporting the first circuit board and the second circuit board.

4. The electric vehicle controller with screwless installation of the circuit board according to claim 2, characterized in that: A plurality of ribs are circumferentially and spacedly arranged on the outer side of the connecting portion.

5. The electric vehicle controller with screwless installation of the circuit board according to claim 4, characterized in that: The ribs are inclined from the free end of the connecting portion towards the fixing portion.

6. The electric vehicle controller with screwless installation for a circuit board according to claim 4, characterized in that: A positioning inclined surface is provided at the free end of the rib.

7. The electric vehicle controller with screwless installation for a circuit board according to claim 1, wherein: The pressing cap has a pressing hole, and the pressing hole is in interference fit with the positioning post.

8. A controller for an electric vehicle with screwless installation of a circuit board according to claim 7, characterized in that: The pressing cap is a nylon pressing cap.

9. The electric vehicle controller with screwless installation for a circuit board according to claim 1, characterized in that: Outlet openings are provided on the controller housing on both sides of the aluminum-based power board and the FR4 control board.

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