Power supply and motor three-phase copper bar electric connection structure

Abstract

The utility model discloses a power supply and motor three-phase copper bar electric connection structure, which comprises a plastic shell, power supply positive and negative copper bars, a first three-phase copper bar structure and a second three-phase copper bar structure, the power supply positive and negative copper bars are fixedly connected with the plastic shell, and the end faces of the power supply positive and negative copper bars are exposed out of the plastic shell; the middle part of the first three-phase copper bar structure is embedded into the plastic shell, and two ends of the first three-phase copper bar structure extend out of the plastic shell; the second three-phase copper bar structure is fixedly connected with the plastic shell, the end face of the second three-phase copper bar structure is exposed out of the plastic shell, and one end of the second three-phase copper bar structure extends out of the plastic shell. The structure has the advantages that the structure is simple, the space is compact, the electric connection between the ERG controller and the whole vehicle power supply is realized, the three-phase electric connection between the second three-phase copper bar structure and the motor is satisfied, and the structure is simple and the performance is reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive controllers, in particular to an electrical connection structure between a power supply and a three-phase copper bar of a motor. Background Art

[0002] An automotive exhaust gas recirculation system (EGR) reduces the peak combustion of an engine by introducing exhaust gas into the combustion chamber, thereby achieving the purpose of reducing NOx emissions. The main components of the automotive exhaust gas recirculation system are: an EGR solenoid valve, an EGR valve, an EGR valve opening sensor, and an ERG controller. The power supply and the three-phase connection of the motor of the ERG controller must introduce a structure of a hardware copper bar and a plastic-coated copper bar. The plastic-coated copper bar needs to meet the requirements of reliability such as temperature resistance, electrical performance, and vibration. Therefore, the inventor has proposed a new design for the structure of the plastic-coated copper bar. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an electrical connection structure between a power supply and a three-phase copper bar of a motor in view of the deficiencies of the prior art.

[0004] To solve the above technical problem, the utility model adopts the following technical solutions.

[0005] An electrical connection structure between a power supply and a three-phase copper bar of a motor includes a plastic housing, a positive and negative power copper bar, a first three-phase copper bar structure, and a second three-phase copper bar structure; one end of the positive and negative power copper bar is used for electrically connecting with a PCB board, and the other end is used for connecting with a vehicle power supply; one end of the first three-phase copper bar structure is used for electrically connecting with the PCB board, and the other end is used for electrically connecting with the PCB board; one end of the second three-phase copper bar structure is used for electrically connecting with the PCB board, and the other end is used for electrically connecting with the motor; the positive and negative power copper bar is fixedly connected with the plastic housing, and the end face of the positive and negative power copper bar exposes out of the plastic housing; the middle part of the first three-phase copper bar structure is embedded in the plastic housing, and both ends of the first three-phase copper bar structure extend out of the plastic housing; the second three-phase copper bar structure is fixedly connected with the plastic housing, the end face of the second three-phase copper bar structure exposes out of the plastic housing, and one end extends out of the plastic housing.

[0006] A preferred solution is that the electrical connection structure between the power supply and the three-phase copper bar of the motor further includes a PCB board, and the plastic housing is fixedly connected with the PCB board.

[0007] A preferred solution is that one end of the positive and negative power copper bar is provided with a U-shaped groove, and connecting pins are respectively arranged on both sides of the U-shaped groove, and the connecting pins are welded with the PCB board.

[0008] A preferred solution is that the first three-phase copper bar structure includes three special-shaped first copper bars, and the three special-shaped first copper bars are parallel to each other.

[0009] One preferred solution is that the spacing between adjacent first copper bars is 1.3 mm to 1.6 mm, the width of the first copper bar is 5 mm to 7 mm, and the thickness of the first copper bar is 1.8 mm to 2.4 mm.

[0010] One preferred solution is that the second three-phase copper bar structure includes three second copper bars. The second copper bars are provided with screw fixing holes. One end of the second copper bar is welded to the PCB board, and the screw fixing holes are used to electrically connect to the motor through screws.

[0011] One preferred solution is that the plastic housing is provided with a plurality of positioning posts, and the PCB board is provided with positioning holes corresponding to the positioning posts.

[0012] The power supply and motor three-phase copper bar electrical connection structure provided by the embodiment of the present utility model has at least the following beneficial effects: high temperature resistance, reliable electrical performance and vibration resistance, simple structure, and compact space. This structure realizes the electrical connection between the ERG controller and the vehicle power supply, and at the same time satisfies the three-phase electrical connection between the second three-phase copper bar structure and the motor. The structure of this utility model is simple and the performance is reliable.

[0013] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the following specific preferred embodiments are given and described in detail in conjunction with the accompanying drawings. Brief Description of the Drawings

[0014] Figure 1 is the three-dimensional view of the present utility model Figure 1 ;

[0015] Figure 2 is the three-dimensional view of the present utility model Figure 2 ;

[0016] Figure 3 is the three-dimensional view of the plastic housing in the present utility model;

[0017] Figure 4 is the three-dimensional view of the positive and negative copper bars of the power supply in the present utility model;

[0018] Figure 5 is the three-dimensional view of the second three-phase copper bar structure in the present utility model;

[0019] Figure 6 is the three-dimensional view of the first three-phase copper bar structure in the present utility model. Detailed Description of the Embodiments

[0020] To elaborate on the idea and purpose of this application, the following will further explain this application in conjunction with the accompanying drawings and specific embodiments.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", "left", "right", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0022] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0023] As Figures 1 to 6 shown, an embodiment of this application provides a power supply and motor three-phase copper bus electrical connection structure, including a plastic housing 10, a power supply positive and negative copper bus 20, a first three-phase copper bus structure 30, and a second three-phase copper bus structure 40; one end of the power supply positive and negative copper bus 20 is used for electrical connection with a PCB board 50, and the other end is used for connection with a vehicle power supply; one end of the first three-phase copper bus structure 30 is used for electrical connection with the PCB board 50, and the other end is used for electrical connection with the PCB board 50; one end of the second three-phase copper bus structure 40 is used for electrical connection with the PCB board 50, and the other end is used for electrical connection with a motor; the power supply positive and negative copper bus 20 is fixedly connected to the plastic housing 10, and the end face of the power supply positive and negative copper bus 20 is exposed from the plastic housing 10; the middle part of the first three-phase copper bus structure 30 is embedded in the plastic housing 10, and both ends of the first three-phase copper bus structure 30 extend out of the plastic housing 10; the second three-phase copper bus structure 40 is fixedly connected to the plastic housing 10, the end face of the second three-phase copper bus structure 40 is exposed from the plastic housing 10, and one end extends out of the plastic housing 10.

[0024] As Figures 1 to 6 shown, it is reliable in terms of high temperature resistance, electrical performance, and vibration, has a simple structure and a compact space. This structure realizes the electrical connection between the ERG controller and the vehicle power supply, and at the same time satisfies the three-phase electrical connection between the second three-phase copper bus structure 40 and the motor. This utility model has a simple structure and reliable performance.

[0025] As Figures 1 to 6As shown, one end of the positive and negative power copper busbars 20 is used for electrical connection with the PCB board 50, and the other end is used for connection with the vehicle power supply; one end of the first three-phase copper busbar structure 30 is used for electrical connection with the PCB board 50, and the other end is used for electrical connection with the PCB board 50; one end of the second three-phase copper busbar structure 40 is used for electrical connection with the PCB board 50, and the other end is used for connection with the motor. At the same time, the product has advantages such as convenient PCB installation and reliable welding.

[0026] As Figures 1 to 6 shown, the structure of the positive and negative power copper busbars 20 presents an L-shaped structure, and a copper sleeve 23 is riveted in the middle of the positive and negative power copper busbars 20, and the copper sleeve 23 ensures the connection between the vehicle power supply and the positive and negative power copper busbars 20.

[0027] As Figures 1 to 6 shown, the electrical connection structure between the power supply and the three-phase copper busbars of the motor further includes a PCB board 50, and the plastic housing 10 is fixedly connected to the PCB board 50.

[0028] As Figures 1 to 6 shown, one end of the positive and negative power copper busbars 20 is provided with a U-shaped groove 21, and connecting pins 22 are respectively arranged on both sides of the U-shaped groove 21, and the connecting pins 22 are welded to the PCB board 50. A U-shaped groove 21 is opened on the lower end surface of the positive and negative power copper busbars 20, and connecting pins 22 protrude from both sides of the U-shaped groove 21, and the connecting pins 22 are welded to the holes of the PCB board 50. Through the above structure, the electrical performance connection of the vehicle power supply, the positive and negative power copper busbars 20 and the PCB board 50 is realized.

[0029] As Figures 1 to 6 shown, the first three-phase copper busbar structure 30 includes three special-shaped first copper busbars 31, and the three special-shaped first copper busbars 31 are parallel to each other.

[0030] As Figures 1 to 6 shown, the distance between adjacent first copper busbars 31 is 1.3 mm to 1.6 mm, the width of the first copper busbars 31 is 5 mm to 7 mm, and the first copper busbars 31 are 1.8 mm to 2.4 mm. Affected by the space and current-carrying capacity of the PCB board 50, the first three-phase copper busbar structure 30 needs to be arranged at the upper end of the PCB board 50. The first three-phase copper busbar structure 30 includes three special-shaped first copper busbars 31, and the vertical distance between adjacent first copper busbars 31 is 1.5 mm. At the same time, considering the influence of the layout of devices on the PCB board 50, the first copper busbars 31 are of special-shaped structure. Considering the electrical performance requirements of the PCB board 50, one end of the first three-phase copper busbar structure 30 is as close as possible to the positive and negative power copper busbars 20, and the other end needs to be close to the second three-phase copper busbar structure 40. In order to meet the current-carrying capacity requirements of the first three-phase copper busbar structure 30, the width * thickness of the first copper busbars 31 is designed as: 6.0 * 2.0 mm, and the material is selected as T2 copper. In order to ensure the welding requirements between the first copper busbars 31 and the PCB board 50, the surfaces of the first copper busbars 31 are tinned.

[0031] As Figures 1 to 6 shown, the second three-phase copper bus structure 40 includes three second copper buses 41. The second copper bus 41 is provided with screw fixing holes 42. One end of the second copper bus 41 is welded to the PCB board 50, and the screw fixing holes 42 are used to electrically connect to the motor through screws.

[0032] As Figures 1 to 6 shown, the plastic housing 10 is provided with a plurality of positioning posts 11, and the PCB board 50 is provided with positioning holes corresponding to the positioning posts 11.

[0033] As Figures 1 to 6 shown, in order to facilitate the integral molding of the plastic housing 10, the positive and negative power copper buses 20, the first three-phase copper bus structure 30 and the second three-phase copper bus structure 40. In order to accurately install the first three-phase copper bus structure 30 onto the PCB board 50 and the second three-phase copper bus structure 40 onto the PCB board 50 and the three phases of the motor, 4 positioning posts 11 are added to the plastic housing 10, and the 4 positioning posts 11 are fixed to the positioning holes of the PCB board 50. In order to ensure the reliability and mechanical strength requirements of the plastic housing 10, plastic rib positions, plastic support skeletons and other structures are added to the plastic housing 10.

[0034] The above are the specific implementation manners of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A three-phase copper busbar electrical connection structure between a power source and a motor, characterized in that: It includes a plastic shell, positive and negative copper bars of a power supply, a first three-phase copper bar structure and a second three-phase copper bar structure; one end of the positive and negative copper bars of the power supply is used to be electrically connected to a PCB board, and the other end is used to be connected to a power supply of a whole vehicle; one end of the first three-phase copper bar structure is used to be electrically connected to a PCB board, and the other end is used to be electrically connected to a PCB board; one end of the second three-phase copper bar structure is used to be electrically connected to a PCB board, and the other end is used to be electrically connected to a motor; the positive and negative copper bars of the power supply are fixedly connected to the plastic shell, and the end faces of the positive and negative copper bars of the power supply are exposed from the plastic shell; the middle part of the first three-phase copper bar structure is embedded in the plastic shell, and the two ends of the first three-phase copper bar structure extend out of the plastic shell; the second three-phase copper bar structure is fixedly connected to the plastic shell, and the end face of the second three-phase copper bar structure is exposed from the plastic shell, and one end extends out of the plastic shell.

2. The three-phase copper busbar electrical connection structure between a power source and a motor according to claim 1 is characterized in that: The power supply and motor three-phase copper busbar electrical connection structure further includes a PCB board, and the plastic housing is fixedly connected to the PCB board.

3. The three-phase copper busbar electrical connection structure between a power source and a motor according to claim 1 is characterized in that: A U-shaped groove is provided at one end of the positive and negative copper bars of the power supply, and connecting pins are respectively provided on both sides of the U-shaped groove, and the connecting pins are welded to the PCB board.

4. The three-phase copper busbar electrical connection structure between a power source and a motor according to claim 1 is characterized in that: The first three-phase copper bar structure includes three special-shaped first copper bars, and the three special-shaped first copper bars are parallel to each other.

5. The three-phase copper busbar electrical connection structure between a power source and a motor according to claim 4 is characterized in that: The spacing between adjacent first copper bars is 1.3 mm to 1.6 mm, the width of the first copper bars is 5 mm to 7 mm, and the thickness of the first copper bars is 1.8 mm to 2.4 mm.

6. The three-phase copper busbar electrical connection structure between a power source and a motor according to claim 1, characterized in that: The second three-phase copper bar structure includes three second copper bars, each of which is provided with a screw fixing hole, one end of the second copper bar is welded to the PCB board, and the screw fixing hole is used to electrically connect to the motor through a screw.

7. The three-phase copper busbar electrical connection structure between a power source and a motor according to claim 2, characterized in that: The plastic housing is provided with a plurality of positioning posts, and the PCB board is provided with positioning holes corresponding to the positioning posts.

Images