Electric control integrated high-voltage wire holder of motor

Abstract

The utility model discloses an electric control integrated high-voltage wire holder for a motor, and solves the technical problem of high mold opening cost when a motor wire and an electric control wire on the integrated wire holder form a 90-degree angle. The electric control integrated high-voltage wire holder of the motor comprises an insulating shell and a conductive copper bar, the conductive copper bar is clamped in the insulating shell, the insulating shell comprises an upper shell and a lower shell which are detachable, the conductive copper bar comprises an input end, an output end and a bridge part, the input end and the output end are perpendicular to each other, the bridge part is connected with the input end and the output end, and the surface of the bridge part is coated with plastic. The insulating shell and the conductive copper bars are combined together, so that the design of high integration is realized. The integrated structure can reduce the size and weight of the wiring block, improves the overall performance, and achieves the use when the input end and the output end form a 90-degree angle. A complex injection mold is not used, the copper bar coating problem is solved, flexible production is achieved, and the mold opening cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical accessories and relates to a wiring socket, in particular to a motor and electronic control integrated high-voltage wiring socket. Background Art

[0002] With the rapid development of new energy vehicles, the requirements for driving range and power density are becoming increasingly stringent. Electric drive systems are rapidly developing towards integration, miniaturization, and lightweighting. All-in-one electric drive systems have been released. These systems integrate components such as the motor and electronic control, sharing parts such as housings and wiring harnesses to achieve integration, cost reduction, and lightweighting. The integration of the motor and electronic control requires the use of a junction block for three-phase power transmission.

[0003] For example, the Chinese invention patent with an application publication date of 2022-1-11 and application publication number of CN113922168A discloses an integrated connector for electric control of a new energy motor, which replaces the three-phase line of the motor, saves costs, and improves reliability; the conductive copper busbar is stamped into one piece and folded in half after punching, which saves materials, facilitates mass production, and has low costs. It can also be produced by cutting customized profiles; by providing anti-rotation nuts at both the upper and lower ends of the conductive copper busbar, the reliable stability of the conductive copper busbar when assembled into the insulating housing is ensured; and the insulating housing and the shielding cover work together to give the entire terminal block a 360° shielding function. The present invention has a simple structure, a small size, is easy to mass produce, and adopts an interlocking assembly structure, which is convenient for mass production and automated production.

[0004] However, the above-mentioned new energy motor and electronic control integrated connector cannot be used when the motor wiring and the electronic control wiring are at 90 degrees, which has certain limitations; if the connector is used to achieve 90-degree connection between the motor wiring and the electronic control wiring, the internal conductive copper busbar will have a bending angle, and a new mold needs to be added for integrated mold opening and injection molding during processing. In particular, the part is made of high-temperature material, and the mold opening cost is very high; for the prototype stage, the demand is small, the possibility of later changes is relatively large, the mold opening cost is high, and the cost performance is very low; in addition, product changes and later mold repair are more troublesome, time-consuming, labor-intensive and costly. Utility Model Content

[0005] The utility model provides a motor and electronic control integrated high-voltage terminal block, which solves the technical problem of high mold opening cost when the motor wiring and the electronic control wiring on the integrated terminal block are at 90 degrees.

[0006] The technical solution adopted by the present invention is as follows: A motor and electronic control integrated high-voltage terminal block, comprising an insulating shell and a conductive copper busbar, wherein the conductive copper busbar is clamped in the insulating shell, and the insulating shell comprises a detachable upper shell and a lower shell, and the conductive copper busbar comprises an input end, an output end, and a bridge portion connecting the input end and the output end, which are perpendicular to each other, and the surface of the bridge portion is plastic-coated. By combining the insulating shell and the conductive copper busbar together, a highly integrated design is achieved. This integrated structure can reduce the volume and weight of the connector, improve the overall performance, and enable use when the input end and the output end are at 90 degrees; by setting a split structure of the upper shell and the lower shell, a complex injection mold is not used, the problem of copper busbar coating is solved, flexible production is achieved, and mold opening costs are reduced. The surface plastic coating of the bridge portion can provide additional insulation protection and protection to prevent short circuits and damage between the conductive copper busbar and other components.

[0007] Furthermore, the conductive copper busbars are L-shaped, and the copper busbars for the vehicle drive motor are three-phase or six-phase. Depending on the layout, they can be spaced at different intervals and not on the same plane. The subsequent and previous sets of conductive copper busbars are bent 90 degrees multiple times to ensure that all input and output terminals are on the same plane, with equal spacing between the input terminals and the output terminals, facilitating practical application.

[0008] Furthermore, the upper and lower housings are each provided with an upper and lower conforming groove that matches the shape of the conductive copper busbar. These grooves match the shape of the conductive copper busbar, enabling precise positioning and securing. This ensures the conductive copper busbar is correctly positioned within the connector, preventing poor connection or damage due to misalignment, and potentially causing insulation issues.

[0009] Furthermore, the insulating housing is provided with a glue injection port connecting the upper and lower conformal grooves. This port allows for glue injection into the upper and lower conformal grooves, thereby providing a reliable seal. This glue injection prevents moisture, dust, and other foreign matter from entering the connector, protecting the conductive copper busbar and other key components from damage and corrosion. This insulating glue layer provides additional electrical insulation, preventing short circuits and electrical interference between the conductive copper busbar and the insulating housing.

[0010] Furthermore, the outer surfaces of the upper and lower shells are provided with upper and lower sol grooves filled with colloid. When the upper and lower shells are closed and connected, the upper and lower sol grooves form an annular shape. Filling the outer surfaces with colloid further enhances the sealing effect. The annular shape of the upper and lower sol grooves enhances the structural strength of the connector. The annular groove design reduces stress concentration and improves the connector's tensile and torsional resistance, thereby increasing the connector's reliability and stability.

[0011] Furthermore, the upper and lower shells are secured together by bolts and nuts, and the insulating shell defines a cavity surrounding the threaded hole, which communicates with the glue injection port. In particular, the threaded hole near the conductive copper busbar is provided with a cavity that can be filled with insulating glue to improve the insulation and seal, preventing the bolts and nuts from conducting electricity due to high voltage, which could lead to safety accidents.

[0012] Furthermore, the bolts are spaced apart from the upper and lower profile grooves. Under high pressure, too close a distance can easily cause safety problems, and a certain distance can avoid such a situation.

[0013] Furthermore, the four corners of the insulating housing are provided with mounting holes, and bushings are installed in the mounting holes. This design allows the connector to be easily installed on other equipment or structures. The bushings are generally made of stainless steel to prevent plastic deformation and bolt torque attenuation.

[0014] Furthermore, the mounting holes are all arranged outside the ring of the upper sol tank and the lower sol tank. The mounting holes are arranged outside the ring. When the customer installs the sol tank, a circle of glue is applied to play a sealing role, thereby improving the safety of the product in a high-pressure environment.

[0015] Furthermore, riveted nuts are provided between the input end and the insulator, and between the output end and the insulating shell. The riveted nut is first riveted to the copper busbar, with the purpose of connecting the power terminals with bolts, which is more reliable. Riveted nuts are respectively provided on the three groups of motor ends and electronic control ends of the connector. The riveted nut is a nut used on thin plates or sheet metals. It has a circular shape and one end has embossed teeth and a guide groove. The principle is to press the embossed teeth into the preset hole position of the sheet metal. Generally speaking, the aperture of the preset hole is slightly smaller than the embossed teeth of the riveted nut. The pressure causes the teeth of the riveted nut to squeeze in and cause plastic deformation around the preset hole. The deformed object is squeezed into the guide groove, thereby producing a locking effect. Such a design can conveniently fix the input end and the output end to the connector.

[0016] Beneficial effects of the utility model:

[0017] Use it when the input and output are at 90 degrees;

[0018] By setting up a split structure of the upper and lower shells, the copper busbar coating problem is solved without using a complex injection mold, realizing flexible production and reducing mold opening costs;

[0019] By setting up a glue pouring groove, air tightness is ensured after glue pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a motor and electronic control integrated high-voltage terminal block;

[0021] Figure 2This is a structural schematic diagram of a motor and electronic control integrated high-voltage terminal block from another angle;

[0022] Figure 3 This is an exploded view of a motor and electronic control integrated high-voltage terminal block;

[0023] Figure 4 This is an exploded view from another angle of a motor and electronic control integrated high-voltage terminal block;

[0024] Figure 5 This is a schematic structural diagram of a motor and electronic control integrated high-voltage terminal block from the third angle;

[0025] Figure 6 This is a schematic structural diagram of a motor and electronic control integrated high-voltage terminal block from the fourth angle;

[0026] Figure 7 This is a structural diagram of the upper shell of a motor and electronic control integrated high-voltage terminal block;

[0027] Figure 8 for Figure 5 A cross-sectional view of the structure of the motor and electronic control integrated high-voltage terminal block from a third angle;

[0028] Figure 9 for Figure 6 A cross-sectional view of the structure of the motor and electronic control integrated high-voltage terminal block from a fourth angle;

[0029] Figure 10 This is a cross-sectional view from the fifth angle of a motor and electronic control integrated high-voltage terminal block.

[0030] in:

[0031] 1. Insulation shell, 11. Upper shell, 12. Lower shell, 111. Upper profile groove, 112. Upper sol groove, 113. Glue filling port, 121. Lower profile groove, 122. Lower sol groove;

[0032] 2. Conductive copper busbar, 21. Bridge part;

[0033] 3. Bushing, 4. Riveted nut, 5. Bolt, 6. Nut, 7. Mounting hole. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] Example 1, a motor and electronic control integrated high voltage terminal block, such as Figure 1 As shown, it includes an insulating shell 1 and a conductive copper busbar 2, wherein the conductive copper busbar 2 is clamped in the insulating shell 1, and the insulating shell 1 includes a detachable upper shell 11 and a lower shell 12. The conductive copper busbar 2 includes an input end, an output end, and a bridge portion 21 connecting the input end and the output end, which are perpendicular to each other. The surface of the bridge portion 21 is plastic-coated. By combining the insulating shell 1 and the conductive copper busbar 2 together, a highly integrated design is achieved. This integrated structure can reduce the volume and weight of the connector, improve the overall performance, and enable use when the input end and the output end are at 90 degrees. By setting a separate structure of the upper shell 11 and the lower shell 12, a complex injection mold is not used, the copper busbar coating problem is solved, flexible production is achieved, and mold opening costs are reduced. The surface plastic coating of the bridge portion 21 can provide additional insulation protection and protection to prevent short circuits and damage between the conductive copper busbar 2 and other components.

[0036] Example 2, as a preferred implementation of the motor and electronic control integrated high-voltage terminal block, Figure 2 、 Figure 3 As shown, the difference from Example 1 is that the conductive copper busbars 2 are irregularly L-shaped. When multiple groups of conductive copper busbars 2 are provided, the input terminals are all located in the same plane and are evenly spaced, and the output terminals are all located in the same plane and are evenly spaced. The conductive copper busbars 2 of the latter group and the previous group are bent 90 degrees multiple times, so the copper busbars for the automotive drive motor can be unequally spaced and not on the same plane depending on the spatial layout.

[0037] Example 3, as a preferred implementation of the motor and electronic control integrated high-voltage terminal block, Figure 3 、 Figure 4 As shown, the difference from Example 2 lies in that the upper housing 11 and lower housing 12 are respectively provided with an upper conforming groove 111 and a lower conforming groove 121 that match the shape of the conductive copper busbar 2. The upper conforming groove 111 and the lower conforming groove 121 match the shape of the conductive copper busbar 2, enabling precise positioning and fixation. This ensures the correct position of the conductive copper busbar 2 in the connector, preventing poor connection or damage caused by positional deviation. It also facilitates insulation and prevents adjacent copper busbars from being too close together.

[0038] Example 4, as a preferred implementation of the motor and electronic control integrated high-voltage terminal block, Figure 3As shown, the difference from Example 3 is that the insulating housing 1 is provided with a glue injection port 113 connecting the upper and lower conformal grooves 111, 121. The presence of the glue injection port 113 enables glue injection into the upper and lower conformal grooves 111, 121, thereby providing reliable sealing performance. The glue injection prevents moisture, dust, and other external substances from entering the connector interior, protecting the conductive copper bus 2 and other key components from damage and corrosion. This insulating glue layer provides additional electrical insulation, preventing short circuits and electrical interference between the conductive copper bus 2 and the insulating housing 1.

[0039] Example 5, as a preferred implementation of the motor and electronic control integrated high-voltage terminal block, Figure 1 、 Figure 3 As shown, the difference from Example 4 lies in that the outer surfaces of the upper shell 11 and the lower shell 12 are provided with an upper sol groove 112 and a lower sol groove 122 filled with colloid. When the upper shell 11 and the lower shell 12 are closed and connected, the upper sol groove 112 and the lower sol groove 122 are annular. Filling the outer surface with colloid further achieves a sealing effect. The annular shape of the upper sol groove 112 and the lower sol groove 122 can enhance the structural strength of the connector. The annular groove design can reduce stress concentration and improve the connector's tensile and torsional resistance, thereby increasing the connector's reliability and stability.

[0040] Example 6, as a preferred implementation of the motor and electronic control integrated high-voltage terminal block, Figure 3 As shown, the difference from Example 5 is that the upper shell 11 and the lower shell 12 are fixed by bolts 5 and nuts 6. The insulating shell 1 has a cavity around the threaded hole, which is connected to the glue injection port 113. In particular, the threaded hole close to the conductive copper busbar 2 is filled with insulating glue by providing a cavity to improve the insulation sealing effect. The bolts 5 play a fixing role, and the annular groove is for sealing.

[0041] Example 7, as a preferred implementation of the motor and electronic control integrated high-voltage terminal block, Figure 1 As shown, the difference from embodiment 6 is that the bolt 5, nut 6 are spaced a certain distance from the upper and lower grooves 111 and 121. Under high pressure, too close a distance can easily cause safety problems, and a certain distance can avoid such a situation.

[0042] Example 8, as a preferred implementation of the motor and electronic control integrated high-voltage terminal block, Figure 3 As shown, the difference from Examples 1 to 7 is that the four corners of the insulating housing 1 are provided with mounting holes 7, and bushings 3 are provided in the mounting holes 7. This design can easily install the connector on other equipment or structures. Bushings 3 are generally made of stainless steel and are used for sealing.

[0043] Example 9, as a preferred implementation of the motor and electronic control integrated high-voltage terminal block, Figure 4 As shown, the difference from Example 8 is that the mounting holes 7 are all arranged outside the ring of the upper sol tank 112 and the lower sol tank 122, the mounting holes 7 are arranged outside the ring, and the upper sol tank 112 and the lower sol tank 122 are filled with colloid for sealing, thereby improving the safety of the product in a high-pressure environment.

[0044] Example 10, as a preferred implementation of the motor and electronic control integrated high-voltage terminal block, Figure 3 As shown, the difference from Example 9 is that a rivet nut 64 is provided between the input end and the insulator, and between the output end and the insulating shell 1. Rivet nuts 64 are respectively provided on the three groups of motor ends and the electronic control end of the connector. The rivet nut 64 is a nut 6 used on thin plates or sheet metals. It has a circular shape and one end has embossed teeth and a guide groove. The principle is to press the embossed teeth into the preset hole position of the sheet metal. Generally speaking, the aperture of the preset hole is slightly smaller than the embossed teeth of the rivet nut 6. The teeth of the rivet nut 6 are squeezed into the preset hole through pressure to produce plastic deformation around the preset hole, and the deformed object is squeezed into the guide groove, thereby producing a locking effect. Such a design can conveniently fix the input end and the output end to the connector.

[0045] Example 11, as Figure 1-4 The figure shows a high-voltage terminal block for integrated motor and electronic control. With the rapid development of new energy vehicles, the requirements for driving range and power density are becoming increasingly stringent. Electric drive systems are rapidly developing towards integration, miniaturization, and lightweighting. Currently, all-in-one electric drive systems have been released. These systems integrate components such as motors and electronic controls, sharing parts such as housings and wiring harnesses to achieve integration, cost reduction, and lightweighting. The integration of motors and electronic controls requires this connector for three-phase power transmission.

[0046] Currently, meeting product requirements requires new molds for injection molding, especially for parts made of high-temperature materials, which makes mold opening very expensive. During the prototype phase, demand for this part is low, and the potential for subsequent changes is high, making mold opening expensive and cost-effective. Furthermore, product changes require subsequent mold repairs, which are time-consuming, labor-intensive, and expensive. Currently, a split-type design is used, which allows for meeting requirements without mold opening when demand is low.

[0047] In this solution, the connector does not use integral injection molding, but adopts a split structure (machining is possible), which can meet the requirements of copper busbar plastic coating and achieve the purpose of insulation protection. The sol groove serves to seal the copper busbar and the shell.

[0048] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A motor and electronic control integrated high-voltage terminal block, comprising an insulating housing (1) and a conductive copper busbar (2), wherein the conductive copper busbar (2) is clamped in the insulating housing (1), and characterized in that: The insulating housing (1) comprises a detachable upper housing (11) and a lower housing (12); the conductive copper busbar (2) comprises an input end and an output end perpendicular to each other, and a bridge portion (21) connecting the input end and the output end; the surface of the bridge portion (21) is plastic-coated; riveted nuts (4) are provided between the input end and the insulating housing (1), and between the output end and the body of the insulating housing (1).

2. The motor and electronic control integrated high-voltage terminal block according to claim 1, characterized in that: The conductive copper busbar (2) is L-shaped. When there are multiple groups of conductive copper busbars (2), the input ends are all located in the same plane and are arranged at equal intervals, and the output ends are all located in the same plane and are arranged at equal intervals.

3. The motor and electronic control integrated high-voltage terminal block according to claim 2, characterized in that: The upper shell (11) and the lower shell (12) are respectively provided with an upper conformal groove (111) and a lower conformal groove (121) that match the shape of the conductive copper busbar (2).

4. The motor and electronic control integrated high-voltage terminal block according to claim 3, characterized in that: The insulating shell (1) is provided with a glue injection port (113) communicating with the upper conformal groove (111) and the lower conformal groove (121). The four corners of the insulating shell (1) are provided with mounting holes (7), and bushings (3) are provided in the mounting holes (7).

5. The motor and electronic control integrated high-voltage terminal block according to claim 4, characterized in that: An upper sol groove (112) and a lower sol groove (122) filled with colloid are provided on the outer surfaces of the upper shell (11) and the lower shell (12); when the upper shell (11) and the lower shell (12) are closed and connected, the upper sol groove (112) and the lower sol groove (122) are annular.

6. The motor and electronic control integrated high-voltage terminal block according to claim 5, characterized in that: The upper shell (11) and the lower shell (12) are fixed by bolts (5) and nuts (6); the insulating shell (1) has a cavity surrounding the threaded hole, and the cavity is connected to the glue injection port (113).

7. The motor and electronic control integrated high-voltage terminal block according to claim 6, characterized in that: The bolt (5) is spaced apart from the upper conforming groove (111) and the lower conforming groove (121).

8. The motor and electronic control integrated high-voltage terminal block according to claim 5, characterized in that: The mounting holes (7) are both arranged outside the annular portions of the upper sol tank (112) and the lower sol tank (122).

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