Connecting structure of electric vehicle motor

Abstract

The utility model relates to the technical field of electric automobile connecting pieces, in particular to an electric automobile motor connecting structure, which is technically characterized by comprising a shell and a metal conducting bar, the metal conducting bar is inserted in the shell and extends outwards, one end of the metal conducting bar extending outwards is used for being connected with a copper pipe of a motor controller, and the other end of the metal conducting bar extends outwards. The shell comprises an insertion part and a main body part, the cross section of the main body part in the vertical direction is U-shaped, and an opening of the main body part faces downwards; the cross section of the insertion part in the vertical direction is arranged in a rounded rectangle shape, a through groove is formed in the middle of the insertion part, the through groove extends in the length direction of the insertion part, the through groove and the metal conducting bar are arranged in a matched mode, a hexagonal groove is formed in the side face of the downward side of the main body part, and the metal conducting bar is arranged in the hexagonal groove. The metal conducting bar is provided with a fixing bolt matched with the hexagonal groove, the fixing bolt comprises a screw rod and a nut, and the nut is embedded in the groove.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle connectors, in particular to a connection structure of an electric vehicle motor. Background Art

[0002] The electrical connection structure of electric vehicle motors plays a vital role in the whole vehicle system. It is not only responsible for efficiently transmitting the power provided by the battery pack to the motor, but also ensuring the precise control of the motor by the control system. This structure usually includes key components such as high-quality wires, rugged connectors, and stable and reliable contact points.

[0003] First, the electrical connection structure needs to be able to withstand the high current and high voltage generated by the motor when it is working. The motor of an electric vehicle consumes a lot of electrical energy during starting, acceleration, and climbing, which requires the electrical connection structure to have sufficient conductivity and load-bearing capacity to ensure the stability and safety of power transmission.

[0004] Secondly, the electrical contact points of the electrical connection structure must maintain a high degree of reliability. Since electric vehicles experience various complex environments and working conditions during driving, such as high temperature, humidity, vibration, etc., these factors will affect the reliability of the electrical contact points. Therefore, when designing the electrical connection structure, it is necessary to use appropriate materials and processes to ensure that the electrical contact points can maintain stable contact performance during long-term use.

[0005] Finally, the design of the electrical connection structure also needs to consider the integration and maintainability of the vehicle system. In the design of the vehicle, the connection between components such as the motor, battery pack, and control system should be simplified as much as possible to reduce the number of wiring harnesses and connectors and improve the integration of the system. At the same time, the electrical connection structure should also be easy to maintain and repair so that it can be quickly located and repaired when a fault occurs.

[0006] In summary, the electrical connection structure of an electric vehicle is an indispensable part of the entire vehicle system. Based on this, a motor electrical connection structure with a perfect design is needed. Utility Model Content

[0007] Therefore, the purpose of this application is to provide a connection structure for an electric vehicle motor, which has a simple structure and is easy to install.

[0008] The above technical objectives of the utility model are achieved through the following technical solutions:

[0009] A motor connection structure for an electric vehicle comprises a shell and a metal conductive bar, wherein the metal conductive bar is inserted into the shell and extends outward, wherein one end of the metal conductive bar extending outward is used to connect with the copper tube of the motor controller, wherein the shell comprises an insertion portion and a main body portion, wherein the cross section of the main body portion in the vertical direction is U-shaped, and the opening of the main body portion is downward; the cross section of the insertion portion in the vertical direction is a rounded rectangular, a through slot is arranged in the middle of the insertion portion, the through slot extends along the length direction of the insertion portion, the through slot and the metal conductive bar are arranged to match each other, a hexagonal groove is arranged on the side surface of the main body portion pointing downward, a fixing bolt matching the hexagonal groove is arranged on the metal conductive bar, the fixing bolt comprises a screw rod and a nut, and the nut is embedded in the groove.

[0010] Preferably, a protrusion is provided above the main body, and the groove is located inside the protrusion.

[0011] Preferably, the housing further comprises a connecting portion, and the connecting portion is symmetrically arranged in both the height direction and the horizontal direction.

[0012] Preferably, both ends of the connecting portion in the horizontal direction are provided with through holes penetrating the vertical surface thereof, and the fixing between the connecting portion and the electric vehicle is achieved by embedding bolts in the through holes.

[0013] Preferably, a reinforcing rib in the form of a right triangle is provided above the connecting portion, and two reinforcing ribs are provided, one of which is used for connecting the connecting portion and the main body portion, and the other is used for connecting the connecting portion and the insertion portion.

[0014] Preferably, an annular groove is provided on the side of the connecting portion pointing toward the inserting portion, and a step seal is provided in the annular groove.

[0015] Preferably, the annular groove is provided with a plurality of protrusions, and the protrusions abut against the outer circumference of the step seal.

[0016] Preferably, the metal conductive bar is arranged in a long strip shape, one end of the metal conductive bar is inserted in the main body, and the other end points to the insertion part and extends to the outside of the opening of the insertion part. The metal conductive bar is provided with a fixing hole at one end protruding from the insertion part, and a fixing nut is provided in the fixing hole.

[0017] Compared with the prior art, the electric vehicle motor connection structure provided by the present application has the following beneficial effects:

[0018] 1. The electric vehicle motor connection structure provided in the present application realizes a stable connection with the copper tube of the motor controller through the housing and the metal conductive bar. The combined design of the main body, the insertion part and the connection part of the housing not only ensures the aesthetics and compactness of the structure, but also enables the entire connection structure to be conveniently fixed to other parts of the electric vehicle through the extension part of the connection part, greatly improving the convenience and stability of installation.

[0019] 2. The electric vehicle motor connection structure provided by the present application is through the housing and the metal conductive bar. The long strip design of the metal conductive bar and the setting of the fixing hole make it easy to plug in the copper tube of the motor controller and stabilize it through ultrasonic welding, effectively improving the conductivity and reliability of the connection structure. At the same time, the design of the threaded hole and the fixing bolt at one end of the metal conductive bar inserted into the main body further ensures the firm connection between the metal conductive bar and the housing, effectively preventing the occurrence of loosening and falling off.

[0020] 3. The electric vehicle motor connection structure provided in the present application is through the outer shell and the metal conductive bar. The reinforcing ribs arranged above the connection part not only enhance the stability of the structure, but also serve as a fool-proof design structure, effectively avoiding the occurrence of wrong direction insertion during installation, and improving the accuracy and efficiency of installation.

[0021] In summary, the electric vehicle motor connection structure has the advantages of easy installation, stability and reliability, excellent conductivity and fool-proof design. It can significantly improve the connection performance and safety of the electric vehicle motor and provide a strong guarantee for the stable operation of the electric vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of an electric vehicle motor connection structure in one embodiment of the utility model;

[0023] Figure 2 This is a structural schematic diagram of another angle of an electric vehicle motor connection structure in one embodiment of the utility model;

[0024] Figure 3 It is a cross-sectional schematic diagram of a motor connection structure of an electric vehicle in one embodiment of the utility model.

[0025] In the figure, 1. shell; 11. main body; 111. protrusion; 112. groove; 12. insertion part; 121. through groove; 122. fixing strip; 13. connecting part; 131. through hole; 132. reinforcing rib; 133. annular groove; 135. protrusion; 14. step seal; 2. metal conductive bar; 21. fixing hole; 22. fixing nut; 23. threaded hole; 24. fixing bolt; 241. screw; 242. nut; 25. fixing groove. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] See also Figure 1 , Figure 2 and Figure 3 An electric vehicle motor connection structure includes a shell 1 and a metal conductive bar 2. The metal conductive bar 2 is inserted into the shell 1 and extends outward. One end of the metal conductive bar 2 extending outward is used to connect with a copper tube of a motor controller.

[0028] See also Figure 1 and Figure 2 In one embodiment, the housing 1 includes a main body 11, an inserting portion 12 and a connecting portion 13, wherein the main body 11, the inserting portion 12 and the connecting portion 13 are integrally formed, wherein the cross section of the main body 11 in the vertical direction is U-shaped, and the opening of the main body 11 is downward, the cross section of the inserting portion 12 in the vertical direction is roughly a rounded rectangular, and the connecting portion 13 is used to connect the main body 11 and the inserting portion 12, and the connecting portion 13 extends outward to form an extension portion, through which the housing 1 can be fixed to the components on the electric vehicle;

[0029] See also Figure 1 The main body 11 is provided with an opening at the bottom, a protrusion 111 is provided above the main body 11, and a hexagonal groove 112 is provided on the side of the protrusion 111 pointing downward;

[0030] The cross section of the inserting portion 12 in the vertical direction is a rounded rectangular shape. In one embodiment, a through slot 121 is provided in the middle of the inserting portion 12. The through slot 121 extends along the length direction of the inserting portion 12. The through slot 121 and the metal conductive bar 2 are matched with each other. In one embodiment, the through slot 121 is connected to the main body 11. In one embodiment, the bottom surface of the protrusion 111 and the top surface of the through slot 121 are coplanar.

[0031] The connecting portion 13 is symmetrically arranged in the height direction and the horizontal direction. In one embodiment, through holes 131 penetrating the vertical surface are arranged at both ends of the connecting portion 13 in the horizontal direction, and the fixing between the connecting portion 13 and the electric vehicle is achieved by embedding bolts in the through holes 131. In one embodiment, a reinforcing rib 132 in the form of a right triangle is arranged above the connecting portion 13. Two reinforcing ribs 132 are arranged, one of which is used for connecting the connecting portion 13 and the main body 11, and the other reinforcing rib 132 is used for connecting the connecting portion 13 and the insertion portion 12; the reinforcing rib 132 is used to stabilize the structure among the connecting portion 13, the main body 11 and the insertion portion 12. At the same time, by setting the reinforcing rib 132, the reinforcing rib 132 is used as a fool-proof design structure, thereby avoiding the occurrence of wrong direction insertion during the insertion process.

[0032] In order to ensure the sealing of the connection, in one embodiment, an annular groove 133 is provided on the side of the connecting portion 13 pointing to the insertion portion 12, and a step seal 14 is provided in the annular groove 133. In one embodiment, the annular groove 133 is provided with a plurality of protrusions 135, and the step seal 14 is abutted against the outer periphery of the step seal 14, thereby achieving the fixation of the position of the step seal 14. In one embodiment, three protrusions 135 are provided, and the three protrusions 135 are located on the outer periphery of the step seal 14 and one corner of them is abutted against the step seal 14. The three protrusions 135 are arranged in an array along the circumferential direction of the step seal 14.

[0033] In one embodiment, the metal conductive bar 2 is arranged in a long strip shape, one end of the metal conductive bar 2 is inserted into the main body 11, and the other end points to the insertion part 12 and extends outside the opening of the insertion part 12. The metal conductive bar 2 is provided with a fixing hole 21 at one end protruding from the insertion part 12, and a fixing nut 22 is provided in the fixing hole 21. The fixing nut 22 is used for plugging the copper tube of the motor controller, and the electrode controller and the metal conductive bar 2 are stabilized by ultrasonic welding;

[0034] In one embodiment, in order to ensure the mutual fixation between the metal conductive bar 2 and the main body 11, a threaded hole 23 is provided at one end of the metal conductive bar 2 inserted into the main body 11, and a fixing bolt 24 passes through the threaded hole 23. The fixing bolt 24 includes a screw rod 241 and a nut 242, wherein the screw rod 241 passes through the threaded hole 23, and the nut 242 is located at the end of the screw rod 241 and embedded in the groove 112 to fix the position of the fixing bolt 24, thereby further realizing the mutual fixation between the metal conductive bar 2 and the housing 1.

[0035] In one embodiment, in order to ensure the stability of the structure between the metal conductive bar 2 and the shell 1, a plurality of fixing grooves 25 arranged in an array along the length direction of the metal conductive bar 2 are provided on the outer periphery of the metal conductive bar 2, and a fixing bar 122 matching the fixing groove 25 is provided in the through groove 121 of the insertion portion 12.

[0036] During the installation process, the fixing bolts 24 are first threadedly fixed on the metal conductive bar 2, and then the metal conductive bar 2 is inserted into the mold, and the outer shell 1 is formed on the outer side of the metal conductive bar 2 by mold injection molding, thereby realizing the production of the connection structure.

[0037] The electric vehicle motor connection structure provided in the present application realizes a stable connection with the copper tube of the motor controller through the housing 1 and the metal conductive bar 2. The combined design of the main body 11, the insertion part 12 and the connection part 13 of the housing 1 not only ensures the aesthetics and compactness of the structure, but also enables the entire connection structure to be conveniently fixed to other components on the electric vehicle through the extension part of the connection part 13, greatly improving the convenience and stability of installation.

[0038] Secondly, the long strip design of the metal conductive bar 2 and the setting of the fixing hole 21 make it easy to plug in the copper tube of the motor controller and stabilize it through ultrasonic welding, effectively improving the conductivity and reliability of the connection structure. At the same time, the design of the threaded hole 23 and the fixing bolt 24 at one end of the metal conductive bar 2 inserted into the main body 11 further ensures the firm connection between the metal conductive bar 2 and the housing 1, effectively preventing the occurrence of loosening and falling off.

[0039] In addition, the reinforcing ribs 132 disposed above the connection portion 13 not only enhance the stability of the structure, but also serve as a fool-proof design structure, effectively avoiding the occurrence of wrong direction insertion during installation, thereby improving the accuracy and efficiency of installation.

[0040] To sum up, the electric vehicle motor connection structure provided in this application has the advantages of easy installation, stability and reliability, excellent conductivity and fool-proof design. It can significantly improve the connection performance and safety of the electric vehicle motor and provide a strong guarantee for the stable operation of the electric vehicle.

Claims

1. A connection structure of an electric vehicle motor, comprising a housing and a metal conductive bar, wherein the metal conductive bar is inserted into the housing and extends outward, and one end of the metal conductive bar extending outward is used to connect with a copper tube of a motor controller, characterized in that: The shell includes an insertion portion and a main body portion, wherein the cross-section of the main body portion in the vertical direction is U-shaped, and the opening of the main body portion is downward; the cross-section of the insertion portion in the vertical direction is a rounded rectangle, a through slot is provided in the middle of the insertion portion, the through slot extends along the length direction of the insertion portion, the through slot and the metal conductive bar are matched with each other, a hexagonal groove is provided on the side surface of the main body pointing downward, and a fixing bolt matching the hexagonal groove is provided on the metal conductive bar, the fixing bolt includes a screw rod and a nut, and the nut is embedded in the groove.

2. The connection structure of an electric vehicle motor according to claim 1, characterized in that: A protrusion is arranged above the main body, and the groove is located inside the protrusion.

3. The connection structure of an electric vehicle motor according to claim 2, characterized in that: The housing further comprises a connecting portion, and the connecting portion is symmetrically arranged in both the height direction and the horizontal direction.

4. The connection structure of an electric vehicle motor according to claim 3, characterized in that: Both ends of the connecting part in the horizontal direction are provided with through holes penetrating the vertical surface thereof, and the fixing between the connecting part and the electric vehicle is achieved by embedding bolts in the through holes.

5. The connection structure of the electric vehicle motor according to claim 4, characterized in that: A reinforcing rib in the form of a right triangle is arranged above the connecting portion, and two reinforcing ribs are arranged, one of which is used for connecting the connecting portion and the main body portion, and the other is used for connecting the connecting portion and the insertion portion.

6. The connection structure of the electric vehicle motor according to claim 5, characterized in that: The connecting portion is provided with an annular groove on one side of the inserting portion, and a step seal is provided in the annular groove.

7. The connection structure of the electric vehicle motor according to claim 6, characterized in that: The annular groove is provided with a plurality of protrusions, and the protrusions abut against the outer periphery of the step seal.

8. The connection structure of the electric vehicle motor according to claim 7, characterized in that: The metal conductive bar is arranged in a long strip shape, one end of which is inserted in the main body, and the other end points to the insertion part and extends to the outside of the opening of the insertion part. A fixing hole is arranged at one end of the metal conductive bar protruding from the insertion part, and a fixing nut is arranged in the fixing hole.

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