Integrated three-phase connector for double motors of automobile

Abstract

The utility model discloses an integrated three-phase connector for automobile double motors, which comprises a plastic body, three first insert copper bars and three second insert copper bars are embedded in the plastic body, and two magnetic rings are embedded and solidified on two sides of the top of the plastic body. According to the integrated three-phase connector for the double motors of the automobile, the six insert copper bars are transversely arranged, electrical safety is met, the two groups of three-phase connectors are combined into one part, the production efficiency of products is improved, the cost of the products is reduced, the nanocrystalline magnetic rings are directly assembled on the plastic body on which the insert copper bars are subjected to injection molding, and then a potting structure is adopted; the traditional mode that the magnetic core is firstly assembled in a plastic shell to be encapsulated and solidified, and then the plastic shell and the buckle with the assembled magnetic core are fixed on the plastic body with the injection-molded copper bar is replaced, so that parts and assembling procedures are reduced, and contributions are made to light weight, energy conservation and consumption reduction of the vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile electric drive systems, in particular to an integrated three-phase connector for automobile dual motors. Background Art

[0002] As the global energy crisis and environmental pollution problems become increasingly prominent, the development of the new energy vehicle industry has received great attention, and increasing the research and development and production of new energy vehicles has become a global consensus. For automotive oil-cooled motors, in order to obtain more stable and higher torque, the motor has developed from the original single-motor platform to a dual-motor platform. The DC power output by the power battery must be converted into three-phase AC power by the inverter in the electronic control box and then smoothly transmitted to the three-phase stator in the motor box. A three-phase connector is generally used between its parts. While stably transmitting the three-phase AC power, it also plays a role in compatibility and sealing with the high-temperature and high-pressure oil in the oil-cooled motor after the motor shell is fixed through the cylinder, shielding electromagnetic interference, and resisting vibration and shock.

[0003] However, oil compatibility, temperature shock, product sealing problems under vibration shock, and electromagnetic interference have always seriously affected the stable operation of the motor controller, thereby affecting the stable operation of the electric drive system; on the other hand, due to the dual-motor platform, two three-phase connectors are required. If the two three-phase connectors can be merged into one three-phase connector, it will inevitably lead to breakthroughs in vehicle lightweighting and cost. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an integrated three-phase connector for dual motors in an automobile, which solves the problem of how to provide an integrated three-phase connector for dual motors that is easy to use in an automobile, has high integration, is light in weight, has reliable performance, is easy to install, and has low cost.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: an integrated three-phase connector for dual-motor vehicles, comprising a plastic body, three first embedded copper bars and three second embedded copper bars are embedded in the plastic body, two magnetic rings are potted and cured on both sides of the top of the plastic body, the two magnetic rings are respectively arranged on the periphery of the first embedded copper bar and the second embedded copper bar, a glue groove is opened on the top of the plastic body, and sealing glue is injected and cured in the glue groove, two sealing rings are installed on the surface of the plastic body, and the upper and lower ends of the first embedded copper bar and the second embedded copper bar are provided with rivet nuts.

[0006] Preferably, mounting seats are fixedly connected to both sides of the plastic body, and bumps are fixedly connected to both the front and rear sides of the plastic body.

[0007] Preferably, four bushings are provided on the tops of the two mounting seats and the tops of the two protrusions, and positioning bushings are provided on the tops of the two mounting seats and on one side of the bushings.

[0008] Preferably, the magnetic ring is bonded to the inside of the plastic body by using a sealing adhesive.

[0009] Preferably, the first inlay copper bar and the second inlay copper bar are arranged in sequence from left to right in transverse direction.

[0010] Preferably, the magnetic ring is made of nanocrystalline material, and the sealing ring is made of AEM rubber material.

[0011] Beneficial Effects

[0012] The utility model provides an integrated three-phase connector for dual motors in automobiles. Compared with the prior art, it has the following beneficial effects:

[0013] (1) The integrated three-phase connector for dual-motor vehicles uses six copper bars that are arranged horizontally to meet electrical safety requirements. Two sets of three-phase connectors are combined into one part, which improves product production efficiency and reduces product costs.

[0014] (2) The integrated three-phase connector for dual motors in the vehicle adopts nanocrystalline magnetic rings, which are directly assembled on the plastic body of the injection-molded copper bar and then adopt a potting structure, which reduces the number of parts and assembly processes, and contributes to the lightweight and energy-saving and consumption-reducing of the vehicle.

[0015] (3) The integrated three-phase connector for dual motors in the vehicle adopts the AEM sealing ring axial and radial double sealing structure to meet the assembly sealing between the plastic body and the motor housing, replacing the traditional through-cylinder radial single sealing structure, increasing the axial sealing and preventing the problem of radial eccentricity and easy sealing failure. The AEM material is compatible with motor cooling oil and has resilience under temperature changes of -40℃-150℃, ensuring more reliable sealing performance under various long-term working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a main perspective view of the structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the structure of the utility model;

[0018] Figure 3 It is a top view of the structure of the utility model;

[0019] Figure 4 It is a front sectional view of the structure of the utility model.

[0020] In the figure: 1. Plastic body; 2. First embedded copper bar; 3. Second embedded copper bar; 4. Magnetic ring; 5. Glue groove; 6. Sealing glue; 7. Sealing ring; 8. Compression rivet nut; 9. Mounting seat; 10. Bump; 11. Bushing; 12. Positioning bushing. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] See also Figures 1 to 4 As shown, the utility model provides an integrated three-phase connector for dual motors of an automobile, comprising a plastic body 1, wherein three first embedded copper bars 2 and three second embedded copper bars 3 are embedded in the plastic body 1, wherein the material used for the embedded copper bars is T2Y2 material, wherein the first embedded copper bars 2 and the second embedded copper bars 3 are arranged in sequence from left to right laterally, and six embedded copper bars are arranged laterally to meet electrical safety, and two groups of three-phase connectors are combined into one part, thereby improving product production efficiency and reducing product cost, and two magnetic rings 4 are potted and solidified on both sides of the top of the plastic body 1, and the two magnetic rings 4 are respectively arranged at the first Around the periphery of the first embedded copper bar 2 and the second embedded copper bar 3, a glue groove 5 is opened on the top of the plastic body 1, and sealing glue 6 is injected and cured inside the glue groove 5. The sealing glue 6 for dispensing is made of Loctite SI5910 material. Two sealing rings 7 are installed on the surface of the plastic body 1. The upper and lower ends of the first embedded copper bar 2 and the second embedded copper bar 3 are provided with rivet nuts 8. The rivet nuts 8 are made of 10B21 material. The magnetic ring 4 is bonded to the inside of the plastic body 1 with a sealing glue. The sealing glue of the magnetic ring 4 is made of epoxy resin material. The magnetic ring 4 is made of nanocrystalline material, and the sealing ring 7 is made of AEM rubber material.

[0024] Through the above-mentioned structure, the magnetic ring 4 is made of nanocrystalline material and is directly assembled on the plastic body 1 with the copper bar molded and then potted, which replaces the traditional structure of first assembling the magnetic core into the plastic shell for potting and curing, and then the plastic shell with the magnetic core assembled is snap-fastened on the plastic body 1 with the copper bar molded, thereby reducing parts and assembly processes, and contributing to the lightweight and energy-saving and consumption-reducing of vehicles.

[0025] The AEM seal ring 7 axial and radial double seal structure is used to meet the assembly seal between the plastic body 1 and the motor housing, replacing the traditional through-cylinder radial single seal structure, increasing the axial seal from being susceptible to radial eccentricity and easy seal failure. The AEM material is compatible with motor cooling oil and has resilience under temperature changes of -40℃-150℃, ensuring more reliable sealing performance under various long-term working conditions;

[0026] Each embedded copper bar and the plastic body 1 are provided with a through-type glue dispensing groove, which replaces the traditional blind hole glue dispensing groove, and solves the problem of internal air trapping affecting the sealing. The preferred through-type glue dispensing groove ensures that the internal air is better discharged during glue dispensing, is not limited by the product structure and space, and can be matched and designed according to the glue characteristics, so that the embedded copper bar and the plastic surface can be fully coated with glue, and the sealing is more reliable;

[0027] Both ends of the embedded copper bar are riveted with M6 nuts, which are used to tighten the screws when the two ends are overlapped with the accessories. The assembly is simple, and the riveting ruler on the riveting nut 8 is connected to the embedded copper bar by riveting to ensure the assembly strength.

[0028] Embodiment 2

[0029] Based on Example 1, please refer to Figure 1 and Figure 3 As shown, mounting seats 9 are fixedly connected to both sides of the plastic body 1, and protrusions 10 are fixedly connected to the front and rear sides of the plastic body 1. Four bushings 11 are arranged on the tops of the two mounting seats 9 and the tops of the two protrusions 10. Positioning bushings 12 are arranged on the tops of the two mounting seats 9 and on one side of the bushings 11. The bushings 11 and the positioning bushings 12 are made of 1215 material and have high strength and hardness.

[0030] Through the arrangement of the above structure, two positioning bushings 12 are used, and the raised plastic surface is 3mm high, which is used for accurate positioning of the motor three-phase connector and the motor housing during assembly, replacing the problem that the dimensional accuracy cannot be guaranteed by designing a plastic positioning pin on the traditional plastic body 1 for assembly and positioning. The raised part of the metal bushing is used as the positioning pin, and the machining size is more accurate and the positioning is more reliable. The knurled pattern on the outer side of the bushing ensures that the strength requirement of the anti-screw tightening torque is met after the plastic is coated, which reduces the development cycle and cost, and improves the development efficiency and product accuracy.

[0031] In addition, on the plastic body 1, six through-hole bushings are designed on the outer side of the seal, which not only realizes the assembly between the plastic body 1 and the motor housing, but also ensures that the sealing ring 7 is evenly stressed when the seal is pressed, thereby ensuring the product sealing and improving the safety of the car.

[0032] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0033] When in use, first embed the first and second embedded copper bars 2, 3, bushings 11, and positioning bushings 12 in the plastic body 5, then assemble the magnetic ring 4 to the plastic body 1 for potting and curing, and then solidify the sealing glue 6 in the glue groove 5 of the plastic body 1, and then press the rivet nuts 3 on the upper ends of the first and second embedded copper bars 2, 3, and then assemble the sealing ring 7 to the plastic body 1 to form.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated three-phase connector for dual motors of an automobile, comprising a plastic body (1), characterized in that: Three first embedded copper bars (2) and three second embedded copper bars (3) are embedded inside the plastic body (1), two magnetic rings (4) are potted and cured on both sides of the top of the plastic body (1), and the two magnetic rings (4) are respectively arranged on the periphery of the first embedded copper bar (2) and the second embedded copper bar (3), a glue groove (5) is opened on the top of the plastic body (1), and sealing glue (6) is injected and cured inside the glue groove (5), two sealing rings (7) are installed on the surface of the plastic body (1), and the upper and lower ends of the first embedded copper bar (2) and the second embedded copper bar (3) are provided with rivet nuts (8).

2. The integrated three-phase connector for dual motors of an automobile according to claim 1, characterized in that: Both sides of the plastic body (1) are fixedly connected with mounting seats (9), and both the front and rear sides of the plastic body (1) are fixedly connected with protrusions (10).

3. The integrated three-phase connector for dual motors of an automobile according to claim 2, characterized in that: Four bushings (11) are arranged on the tops of the two mounting seats (9) and the tops of the two protrusions (10), and positioning bushings (12) are arranged on the tops of the two mounting seats (9) and on one side of the bushings (11).

4. The integrated three-phase connector for dual motors of an automobile according to claim 1, characterized in that: The magnetic ring (4) is bonded to the inside of the plastic body (1) by using a sealing adhesive.

5. The integrated three-phase connector for dual motors of an automobile according to claim 1, characterized in that: The first inlay copper bar (2) and the second inlay copper bar (3) are arranged in sequence from left to right in transverse direction.

6. The integrated three-phase connector for dual motors of an automobile according to claim 1, characterized in that: The magnetic ring (4) is made of nanocrystalline material, and the sealing ring (7) is made of AEM rubber material.

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