Motor electric control integrated high-voltage connector

Abstract

The utility model relates to the technical field of connectors, in particular to an electric control integrated high-voltage connector for a motor, which solves the problems that a connector and a copper bar are integrally formed by injection molding and the stability of the copper bar is poor in the prior art, and comprises a connector shell and the copper bar, a positioning structure and a sealing structure are arranged between the connector shell and the copper bar; the connector shell is connected with a shielding shell, and the shielding shell is a stamping part. The beneficial effects of the utility model are that the copper bar of the connector adopts an assembly type structure, so that the plastic coating requirement of the copper bar is met, the working hours are reduced, and the manufacturing efficiency of the connector is improved; after the copper bar is inserted into the connector shell, the positioning pin is inserted into the shell positioning hole and the copper bar positioning hole, and the positioning pin fixes the position of the copper bar in the connector shell, so that the pulling-out force of the copper bar is increased, the copper bar is prevented from being separated from the connector shell, the production quality of the connector is further ensured, the yield of the connector is improved, and the use safety of the connector is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a motor and electronic control integrated high-voltage connector. Background Art

[0002] In today's fiercely competitive automotive industry, OEMs face significant cost pressures, and cost reduction is a key priority. Furthermore, with the rapid development of new energy vehicles, demands for increasingly high range and power density are driving electric drive systems towards integration, miniaturization, and lightweighting. Currently available all-in-one electric drive systems integrate components such as motors and electronic controls, sharing 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.

[0003] At present, in order to meet the electrical safety requirements, the integrated products of motor and electronic control are mostly produced by one-piece injection molding. In the prior art, the patent with publication number CN221928622U discloses a high-voltage connector for new energy vehicles, including a connector, a copper busbar assembly, a copper nut and a sealing gasket. The copper busbar assembly includes a copper busbar and a copper busbar docking nut. The connector includes a connector docking portion, a connector fixing portion and a connector receiving portion. A connector pair slot is provided in the connector docking portion, and a copper busbar positioning groove is provided on the connector receiving portion. In the above-mentioned high-voltage connector, the connector, copper busbar assembly and copper nut are formed by one-piece injection molding, which is tightly connected without gaps, can ensure the stability and reliability of high-voltage contact, and is safer. However, one-piece injection molding has relatively large limitations on the structure of the product. It has the problems of complex injection molding process and low efficiency, and it is easy for the connector shell to have insufficient fixing strength to the copper busbar and the copper busbar to fall off after the injection molding is completed. Utility Model Content

[0004] The utility model provides a motor and electronic control integrated high-voltage connector, which solves the problem in the prior art that the connector and the copper busbar are integrally injection-molded and the copper busbar has poor stability.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] A high-voltage connector for integrated motor and electronic control systems includes a connector housing and a copper busbar. The copper busbar is inserted into the connector housing, with a positioning structure and a sealing structure provided between the connector housing and the copper busbar. A stamped shielding shell is attached to the connector housing. The connector's copper busbar utilizes an assembled structure, which meets the requirements for plastic coating while reducing labor and improving connector manufacturing efficiency. The positioning structure ensures the copper busbar's installation stability within the connector housing, ensuring assembly quality and improving yield. The sealing structure ensures a tight seal between the connector housing and the copper busbar, thereby ensuring the overall sealing of the connector.

[0007] The positioning structure includes a housing positioning hole and a copper busbar positioning hole. The housing positioning hole is provided on the connector housing, and the copper busbar positioning hole is provided on the copper busbar. The housing positioning hole is arranged perpendicular to the copper busbar insertion hole on the connector housing. After the copper busbar is plugged into the connector housing, the housing positioning hole and the copper busbar positioning hole are aligned. Positioning pins are inserted into the housing positioning hole and the copper busbar positioning hole. After the copper busbar is inserted into the connector housing, the positioning pins are inserted into the housing positioning hole and the copper busbar positioning hole. The positioning pins secure the copper busbar in place within the connector housing, increase the copper busbar pull-out force, and prevent it from falling out of the connector housing. This ensures the production quality of the connector, improves the yield rate of the connector, and ensures the safety of the connector.

[0008] The sealing structure includes a glue potting groove located within the copper busbar insertion hole on the connector housing. The glue potting groove is filled with sealant. The sealant in the potting groove fills the gap between the copper busbar and the copper busbar insertion hole, sealing the copper busbar and the connector housing, thereby ensuring the overall sealing of the connector.

[0009] The connector housing is equipped with slots on all four sides, and the shielding shell is provided with recessed spring claws that engage with the slots, enhancing the securement between the shielding shell and the connector housing. The upper side of the slots communicates with the electrical control contact surface of the connector housing, and the recessed spring claws can only engage with the lower side of the slots. During installation of the shielding shell, the slots define the installation direction of the shielding shell, preventing reverse installation, thus ensuring error-proofing and securing the shielding shell.

[0010] The shielding shell is provided with an outwardly protruding upper claw and an outwardly protruding lower claw. The outwardly protruding upper claw contacts the electric control shell, and the outwardly protruding lower claw contacts the motor shell, and the circuits of the motor shell and the electric control shell are connected through the shielding shell. The claws protruding around the shielding shell can effectively ensure that the contact resistance at any point in the motor electric control system meets the standard, increase the electromagnetic shielding area, and thus minimize the electrical and electromagnetic problems that may arise during the operation of the motor electric control system. The outwardly protruding upper claw can increase the fixing strength of the electric control shell, and the outwardly protruding lower claw can effectively increase the contact area with the motor shell through elastic deformation, avoid poor contact of the electric control motor, and reduce contact resistance. In addition, the shielding shell is grounded after being connected, and the shielding shell can achieve electromagnetic shielding, effectively reduce the grounding resistance, and ensure the safety of the connector.

[0011] Connecting plates are connected to a set of opposite sides of the shielding shell, and the connecting plates are affixed to the connector housing. After the connector is fixed to the motor housing with bolts, the bolts pass through the through holes in the connecting plates to ensure the stable installation of the shielding shell and prevent the shielding shell from being separated from the connector.

[0012] The connector housing is provided with a nut mounting groove, in which a first connecting nut is mounted. The copper busbar is provided with a lower through-hole, and the nut mounting groove corresponds to the lower through-hole. When the connector is in use, a terminal bolt passes through the lower through-hole and connects to the first connecting nut to complete the copper busbar wiring.

[0013] The nut mounting groove is a polygonal groove that limits the first connecting nut and prevents the first connecting nut from rotating, thereby facilitating the wiring of the copper busbar.

[0014] The copper busbar is secured to a retaining clip on top, fitted with a second connecting nut. The copper busbar has a through-hole at its top, which aligns with the second connecting nut. The retaining clip prevents the second connecting nut from rotating, facilitating wiring of the copper busbar. Ribs on both sides of the retaining clip ensure stable engagement with the copper busbar and facilitate proper installation of the retaining clip on the copper busbar.

[0015] The connector housing is provided with sealing grooves on both the upper and lower sides, and sealing rings are provided in the sealing grooves. The sealing rings seal between the connector and the electric control housing, and between the connector and the motor housing, thereby ensuring the sealing of the connector.

[0016] The beneficial effects produced by the utility model are:

[0017] 1. The copper busbar of the connector adopts an assembled structure, which meets the requirements of copper busbar plastic coating while reducing working hours and improving connector manufacturing efficiency. After the copper busbar is inserted into the connector housing, the positioning pins are inserted into the positioning holes of the housing and the copper busbar positioning holes. The positioning pins fix the position of the copper busbar in the connector housing, increase the pull-out force of the copper busbar, and prevent the copper busbar from falling out of the connector housing, thereby ensuring the production quality of the connector, improving the yield rate of the connector, and ensuring the safe use of the connector.

[0018] 2. The shielding shell is manufactured by stamping, reducing production costs and difficulty. The protruding claws on all sides of the shielding shell effectively ensure that the contact resistance at any point in the motor's electronic control system meets standards, increasing the electromagnetic shielding area, thereby minimizing electrical and electromagnetic problems that may arise during operation of the motor's electronic control system. The protruding upper claws increase the fixing strength of the electronic control shell, and the protruding lower claws effectively increase the contact area with the motor shell through elastic deformation, avoiding poor contact with the electronic control motor and reducing contact resistance. In addition, after the shielding shell is turned on and grounded through certain means, it can achieve electromagnetic shielding, effectively reducing grounding resistance and ensuring the safety of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a motor and electronic control integrated high-voltage connector of the utility model;

[0021] Figure 2 This is the exploded view of the connector;

[0022] Figure 3 Schematic diagram of the connector main structure;

[0023] Figure 4 Schematic diagram of the shielding shell structure;

[0024] Figure 5 Schematic diagram of the copper busbar structure;

[0025] Figure 6 This is a cross-sectional view of the connector.

[0026] In the figure: 1. Connector shell, 2. Copper busbar, 3. Sealing ring, 4. Shielding shell, 5. Positioning pin, 6. First connecting nut, 7. Card holder, 8. Second connecting nut, 11. Sealing groove, 12. Card slot, 13. Nut mounting groove, 14. Glue filling groove, 15. Shell positioning hole, 21. Top through hole, 22. Riveting point, 23. Copper busbar positioning hole, 24. Lower through hole, 41. Inner concave spring claw, 42. Outer convex upper spring claw, 43. Outer convex lower spring claw, 44. Connecting plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example 1, as Figure 1 、 Figure 2As shown, a motor and electronic control integrated high-voltage connector includes a connector housing 1 and a copper busbar 2. The copper busbar 2 is inserted into the connector housing 1, and a positioning structure and a sealing structure are provided between the connector housing 1 and the copper busbar 2. A shielding shell 4 is connected to the connector housing 1, and the shielding shell 4 is a stamped part. The copper busbar 2 is installed on the connector housing 1 by plug-in assembly, reducing injection molding time. After the copper busbar 2 is assembled, the connector housing 1 wraps around the copper busbar 2 to provide insulation protection. If either the connector housing 1 or the copper busbar 2 is defective or damaged, the assembled copper busbar 2 can be removed from the connector housing 1 and the connector reassembled, reducing production costs and improving the connector's yield rate. The positioning structure ensures the installation stability of the copper busbar 2 within the connector housing 1, ensuring the assembly quality of the copper busbar 2 and improving the yield rate. The sealing structure ensures the sealing between the connector housing 1 and the copper busbar 2, thereby ensuring the overall sealing of the connector.

[0029] Further, if Figure 5 、 Figure 6 As shown, the positioning structure includes a housing positioning hole 15 and a copper busbar positioning hole 23. The housing positioning hole 15 is provided on the connector housing 1, and the copper busbar positioning hole 23 is provided on the copper busbar 2. The housing positioning hole 15 is arranged perpendicular to the copper busbar insertion hole on the connector housing 1. After the copper busbar 2 is plugged into the connector housing 1, the housing positioning hole 15 corresponds to the copper busbar positioning hole 23. A positioning pin 5 is inserted into the housing positioning hole 15 and the copper busbar positioning hole 23. In this embodiment, the positioning pin 5 is an elastic pin. After the copper busbar 2 is inserted into the connector housing 1, the positioning pin 5 is inserted into the housing positioning hole 15 and the copper busbar positioning hole 23. The positioning pin 5 fixes the position of the copper busbar 2 in the connector housing 1, increases the copper busbar pull-out force, and prevents the copper busbar 2 from falling out of the connector housing 1, thereby ensuring the production quality of the connector, improving the yield rate of the connector, and ensuring the safety of the connector.

[0030] Further, if Figure 6 As shown, the sealing structure includes a glue potting groove 14, which is located in the copper busbar insertion hole on the connector housing 1 and is filled with sealant. After the copper busbar 2 is installed in the connector housing 1, the sealant is injected into the glue potting groove 14. The sealant fills the gap between the copper busbar 2 and the copper busbar insertion hole, achieving a seal between the copper busbar 2 and the connector housing 1, thereby ensuring the overall sealing of the connector.

[0031] Example 2, based on Example 1, a motor and electronic control integrated high-voltage connector, such as Figure 3 、 Figure 4As shown, the connector housing 1 is provided with slots 12 on all four sides, and the shielding shell 4 is provided with recessed spring claws 41, which engage with the slots 12. Specifically, a slot 12 is provided on each of the four sides of the connector housing 1 to ensure the fixing strength of the shielding shell 4 on the connector housing 1. Before the connector is connected to the motor housing, the slots 12 and recessed spring claws 41 cooperate to achieve the locking connection between the shielding shell 4 and the connector housing 1, preventing the shielding shell 4 from falling off the connector housing 1 and facilitating the installation of the connector on the motor housing. The upper side of the slot 12 communicates with the electrical control contact surface of the connector housing 1, and the recessed spring claws 41 can only engage with the lower side of the slot 12. When installing the shielding shell 4, the slot 12 limits the installation direction of the shielding shell 4, preventing the shielding shell 4 from being installed in the reverse direction, thereby achieving error prevention and securing the shielding shell 4 during installation.

[0032] Furthermore, the shielding shell 4 is provided with an outwardly protruding upper claw 42 and an outwardly protruding lower claw 43. The outwardly protruding upper claw 42 contacts the electrical control housing, while the outwardly protruding lower claw 43 contacts the motor housing. The circuits between the motor housing and the electrical control housing are electrically connected through the shielding shell. The outwardly protruding lower claw 43 is positioned below the outwardly protruding upper claw 42 and arranged transversely, allowing it to deform to a certain extent, thereby increasing the contact area between the electrical control end and the motor end and reducing contact resistance. The outwardly protruding claw 43 effectively ensures that the contact resistance at any point in the motor control system meets the standard, increases the electromagnetic shielding area, and thus minimizes electrical and electromagnetic problems that may arise during operation of the motor control system. The outwardly protruding upper claw 42 increases the fixing strength of the electrical control housing, while the outwardly protruding lower claw 43, through elastic deformation, effectively increases the contact area with the motor housing, preventing poor contact between the electrical control motor and reducing contact resistance. Furthermore, after the shielding shell 4 is connected, it is grounded, achieving electromagnetic shielding, effectively reducing grounding resistance, and ensuring the safety of the connector.

[0033] Furthermore, connecting plates 44 are connected to a set of opposite sides of the shielding shell 4, and the connecting plates 44 are in contact with the connector housing 1. After the connector is fixed to the motor housing with bolts, the bolts pass through the through holes in the connecting plates 44 to ensure the stable installation of the shielding shell 4 and prevent the shielding shell 4 from being separated from the connector.

[0034] In addition, in this embodiment, the shielding shell 4 has a split structure. Specifically, the shielding shell 4 includes two linear shielding bars and two C-shaped shielding bars. The linear shielding bars and the C-shaped shielding bars are stamped separately. After stamping, the linear shielding bars and the C-shaped shielding bars are connected by riveting to form a rectangular structure, which effectively reduces the difficulty of manufacturing the shielding shell 4. Specifically, the connecting plate 44 is provided on the C-shaped shielding bar. The linear shielding bar and the C-shaped shielding bar are both provided with an inwardly concave spring claw 41 and an outwardly convex upper spring claw 42. The outwardly convex lower spring claw 43 is provided on the linear shielding bar.

[0035] Example 3, based on Example 2, a motor and electronic control integrated high-voltage connector, a nut mounting groove 13 is provided on the connector housing 1, a first connecting nut 6 is provided in the nut mounting groove 13, a lower through hole 24 is provided on the copper busbar 2, and the nut mounting groove 13 corresponds to the position of the lower through hole 24. The nut mounting groove 13 is a polygonal groove. In this embodiment, the first connecting nut 6 is a hexagonal nut, and the polygonal groove is a hexagonal groove; the polygonal groove limits the rotation of the first connecting nut 6, and the bottom of the copper busbar 2 and the nut mounting groove 13 cooperate to limit the axial movement of the first connecting nut 6, ensuring that after the connector is assembled, the first connecting nut 6 is stably installed on the connector housing 1; at the same time, when the connector is wired, the wiring bolt passes through the lower through hole 24 and connects to the first connecting nut 6, realizing the copper busbar wiring conduction.

[0036] Furthermore, a retainer 7 is secured to the top of the copper busbar 2, and a second connecting nut 8 is mounted on the retainer 7. A top through-hole 21 is provided at the top of the copper busbar 2, and the second connecting nut 8 corresponds to the top through-hole 21. In this embodiment, the second connecting nut 8 is a square nut, and the retainer 7 limits the second connecting nut 8, preventing it from rotating and facilitating copper busbar wiring. Ribs are also provided on both sides of the retainer 7 to ensure stable mating between the retainer 7 and the copper busbar 2, and to determine whether the retainer 7 is properly installed on the copper busbar 2.

[0037] In addition, the copper bus 2 is a Y-shaped structure, and the copper bus 2 is made by bending, and riveting is performed after the copper bus 2 is bent. Specifically, Figure 5 As shown, multiple rivet points 22 are provided at the lower portion of the copper busbar 2 to ensure the structural stability of the copper busbar 2, avoid rebound, and effectively avoid gaps between the copper busbar's bonding surfaces, so that the copper busbar 2 meets electrical safety requirements.

[0038] Further, if Figure 6 As shown, the upper and lower sides of the connector housing 1 are provided with sealing grooves 11, and sealing rings 3 are provided in the sealing grooves 11. The sealing rings 3 on the upper and lower sides of the connector respectively seal between the connector and the electronic control housing and between the connector and the motor housing to ensure the sealing of the connector.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A motor and electronic control integrated high-voltage connector, comprising a connector housing (1) and a copper busbar (2), characterized in that: The copper busbar (2) is plugged into the connector housing (1), and a positioning structure and a sealing structure are provided between the connector housing (1) and the copper busbar (2); a shielding shell (4) is connected to the connector housing (1), and the shielding shell (4) is a stamped part.

2. The motor and electronic control integrated high-voltage connector according to claim 1, characterized in that: The positioning structure comprises a housing positioning hole (15) and a copper busbar positioning hole (23), wherein the housing positioning hole (15) is arranged on the connector housing (1), and the copper busbar positioning hole (23) is arranged on the copper busbar (2), and the housing positioning hole (15) and the copper busbar plugging hole on the connector housing (1) are arranged vertically; after the copper busbar (2) is plugged into the connector housing (1), the housing positioning hole (15) and the copper busbar positioning hole (23) correspond in position, and positioning pins (5) are plugged into the housing positioning hole (15) and the copper busbar positioning hole (23).

3. The motor and electronic control integrated high-voltage connector according to claim 2, characterized in that: The sealing structure comprises a glue pouring groove (14), which is arranged in the copper busbar plug-in hole on the connector housing (1), and the glue pouring groove (14) is filled with sealant.

4. The motor and electronic control integrated high-voltage connector according to any one of claims 1 to 3, characterized in that: The connector housing (1) is provided with a card slot (12) on its periphery, and the shielding shell (4) is provided with an inwardly concave elastic claw (41), and the card slot (12) is engaged with the inwardly concave elastic claw (41).

5. The motor and electronic control integrated high-voltage connector according to claim 4, characterized in that: An outwardly protruding upper spring claw (42) and an outwardly protruding lower spring claw (43) are provided on the shielding shell (4).

6. The motor and electronic control integrated high-voltage connector according to claim 5, characterized in that: A connecting plate (44) is connected to a set of opposite sides of the shielding shell (4), and the connecting plate (44) is fitted with the connector housing (1).

7. The motor and electronic control integrated high-voltage connector according to any one of claims 1 to 3, 5, and 6, characterized in that: A nut mounting groove (13) is provided on the connector housing (1), a first connecting nut (6) is provided in the nut mounting groove (13), a lower through hole (24) is provided on the copper busbar (2), and the nut mounting groove (13) corresponds to the position of the lower through hole (24).

8. The motor and electronic control integrated high-voltage connector according to claim 7, characterized in that: The nut mounting groove (13) is a polygonal groove.

9. The motor and electronic control integrated high-voltage connector according to claim 8, characterized in that: A bracket (7) is clamped on the upper portion of the copper busbar (2), a second connecting nut (8) is provided on the bracket (7), a top through hole (21) is provided on the top of the copper busbar (2), and the second connecting nut (8) corresponds to the position of the top through hole (21).

10. The motor and electronic control integrated high-voltage connector according to any one of claims 1 to 3, 5, 6, 8, and 9, characterized in that: Sealing grooves (11) are provided on both the upper and lower sides of the connector housing (1), and a sealing ring (3) is provided in the sealing groove (11).

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