Rotary transformer connector sealing structure and electric automobile comprising same

Abstract

The utility model discloses a rotary transformer connector sealing structure and an electric automobile comprising the rotary transformer connector sealing structure. The sealing structure comprises an installation part, a first wire harness, a PCB and a second wire harness. The mounting piece comprises a base and a connecting lug which are integrally formed; a plurality of through holes penetrating through the base are formed in the base, so that the wire harness can penetrate through the through holes; a through glue filling groove is formed between the top of the base and the connecting lug; the first wire harness and the second wire harness are welded to the two side faces of the PCB respectively, the first wire harness penetrates through the through hole, the PCB is arranged in the glue pouring groove, and pouring sealant is poured into the glue pouring groove so that the welding connection positions of the wire harnesses and the PCB can be sealed and fixed; an integrally-formed metal insert is arranged on the side portion of the connecting lug, and the metal insert is provided with a through first connecting hole. And when the base of the mounting piece is inserted into the motor cylinder body, the first connecting hole is aligned with the second connecting hole, and the metal insert is pressed by the fastener, so that the mounting piece is fixed. The utility model has the characteristics of compact structure, convenience in disassembly and assembly, good sealing performance and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of electric drive for new energy vehicles, and particularly relates to a resolver connector sealing structure and an electric vehicle including the same. Background Art

[0002] With the continuous development of new energy vehicle technology, integrated design has become a development trend. An electric drive system that integrates a motor, a controller, a reducer, an OBC, a DCDC, etc. into one has the advantages of low cost, small volume, high power density, etc., and can comprehensively improve the efficiency and safety of new energy vehicles. As one of the core components of the electric drive of new energy vehicles, the temperature rise control of the motor faces severe challenges. Excessive temperature rise directly affects the output performance and service life of the motor. Therefore, an oil cooling system is widely used in motors. However, the traditional resolver connector between the motor and the controller only functions as a connecting wire harness and does not seal the oil and gas generated by the motor. Therefore, oil and gas will enter the controller, which will cause the internal electronic components of the controller to fail. Therefore, there is an urgent need for a resolver connector sealing structure to meet the sealing between the motor and the controller. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a resolver connector sealing structure with a compact structure, convenient disassembly and assembly and good sealing performance, and an electric vehicle including the same, aiming at the deficiencies of the prior art.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0005] A resolver connector sealing structure includes: a mounting member, a first wire harness, a PCB board and a second wire harness; the mounting member includes a base and a connecting ear integrally formed; the base is provided with a plurality of through holes penetrating it to allow the wire harness to pass through; there is a through potting groove between the top of the base and the connecting ear; the first wire harness and the second wire harness are respectively welded to two sides of the PCB board, the first wire harness passes through the through hole, the PCB board is arranged in the potting groove, and potting glue is poured into the potting groove to seal and fix the welded joints of the first wire harness and the second wire harness and the PCB board; a metal insert is integrally formed on the side of the connecting ear, and the metal insert is provided with a through first connection hole; when the base of the mounting member is inserted into the motor cylinder block, the first connection hole is aligned with the second connection hole of the motor cylinder block, and the metal insert is pressed tightly by a fastener to fix the mounting member.

[0006] As a further improvement of the utility model, the PCB board is provided with a plurality of first wire passing holes arranged in a ring and a plurality of second wire passing holes arranged in a ring, and the second wire passing holes are located inside the first wire passing holes. The first wire passing holes are used to connect the first wire harness, and the second wire passing holes are used to connect the second wire harness.

[0007] As a further improvement of the present utility model, the through holes are evenly distributed on the base and correspond to the first wire passing holes one by one.

[0008] As a further improvement of the present utility model, a sealing groove is provided on the outer periphery of the base, the sealing groove is close to the connecting ear, and a sealing ring is arranged in the sealing groove to realize the sealing and nesting of the base in the motor cylinder block.

[0009] As a further improvement of the present utility model, the mounting member is made of plastic and is integrally injection-molded with a metal insert.

[0010] As a further improvement of the present utility model, one of the first wire harness and the second wire harness is a motor end wire harness, and the other is a controller end wire harness.

[0011] As a further improvement of the present utility model, both the first wire harness and the second wire harness are soldered to the PCB board.

[0012] As a further improvement of the present utility model, both the first connection hole and the second connection hole are threaded holes, and the fastener is a screw.

[0013] As a further improvement of the present utility model, the base is of a cylindrical structure.

[0014] As a general technical concept, the present utility model also provides an electric vehicle, which includes the resolver connector sealing structure described above.

[0015] Compared with the prior art, the advantages of the present utility model are as follows:

[0016] 1. The resolver connector sealing structure of the present utility model forms a mounting member through an integrally formed base and connecting ear, and a number of through holes are provided in the base to facilitate the passing of wire harnesses. At the same time, a through glue injection groove is provided between the top of the base and the connecting ear; the first wire harness and the second wire harness are respectively soldered on two sides of the PCB board, and the circuit transfer is realized by using the PCB board. The first wire harness passes through the through hole, and the PCB board is arranged in the glue injection groove. By injecting potting glue into the glue injection groove, the welded joints of the wire harnesses and the PCB board are hermetically fixed. The structure is simple and the sealing is reliable, meeting the sealing requirements between the wire harness and the mounting member, effectively preventing the motor oil and gas from entering the controller, and meeting the IP67 protection level of the motor and the controller; at the same time, an integrally formed metal insert is provided on the side of the connecting ear, and a through first connection hole is provided on the metal insert. When the base of the mounting member is inserted into the motor cylinder block, the first connection hole is aligned with the second connection hole of the motor cylinder block, and the metal insert is pressed tightly by the fastener, so that the mounting member is fixed, which can prevent the axial displacement caused by vibration and lead to the failure of the wire harness, reduce the assembly difficulty, and improve the vibration reliability.

[0017] 2. The electric vehicle of the present utility model includes the resolver connector sealing structure described above, and thus has the same advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural principle diagram of the mounting member in a specific embodiment of the present utility model;

[0019] Figure 2 It is a schematic structural principle diagram of the connection structure between the wire harness and the PCB board in a specific embodiment of the present utility model;

[0020] Figure 3 It is a schematic three-dimensional structural principle diagram of the resolver connector sealing structure in a specific embodiment of the present utility model;

[0021] Figure 4 It is a schematic cross-sectional structural principle diagram of the resolver connector sealing structure in a specific embodiment of the present utility model;

[0022] Legend: 1. Mounting member; 11. Base; 12. Connecting ear; 13. Sealing groove; 14. Potting groove; 15. Through hole; 2. Sealing ring; 3. Metal insert; 31. First connection hole; 4. First wire harness; 5. PCB board; 51. First wire passing hole; 52. Second wire passing hole; 6. Second wire harness; 7. Potting glue; 8. Motor cylinder block; 81. Second connection hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present utility model will be further described below in conjunction with the accompanying drawings of the specification and specific preferred embodiments, but the protection scope of the present utility model is not limited thereby.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "side", "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0025] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0026] Embodiment

[0027] As Figures 1 to 4 shown, the resolver connector sealing structure of the present utility model includes: a mounting member 1, a first wire harness 4, a PCB board 5, and a second wire harness 6. The mounting member 1 includes an integrally formed base 11 and a connecting ear 12. The base 11 is a cylindrical structure, and the connecting ear 12 is a special-shaped structure with one end larger and the other end smaller. The base 11 is provided with a plurality of through holes 15 penetrating therethrough to allow the wire harness to pass through; a through potting groove 14 is provided between the top of the base 11 and the connecting ear 12. The first wire harness 4 and the second wire harness 6 are respectively welded to two sides of the PCB board 5. The first wire harness 4 passes through the through hole 15, and the PCB board 5 is disposed in the potting groove 14. Potting glue 7 is poured into the potting groove 14 to seal and fix the welded joints of the first wire harness 4 and the second wire harness 6 and the PCB board 5. A metal insert 3 is integrally formed on the side of the connecting ear 12, and the metal insert 3 is provided with a through first connecting hole 31. When the base 11 of the mounting member 1 is inserted into the motor cylinder block 8, the first connecting hole 31 is aligned with the second connecting hole 81 of the motor cylinder block 8, and the metal insert 3 is pressed tightly by a fastener to fix the mounting member 1. Further, both the first connecting hole 31 and the second connecting hole 81 are threaded holes, and the fastener is a screw.

[0028] In this embodiment, the mounting member 1 is composed of an integrally formed base 11 and connecting lugs 12. A number of through holes 15 penetrating the base 11 are provided to facilitate the passing of wire harnesses. Meanwhile, a through potting groove 14 is provided between the top of the base 11 and the connecting lugs 12. The first wire harness 4 and the second wire harness 6 are respectively welded to two sides of the PCB board 5, and the circuit transfer is realized by using the PCB board 5. The first wire harness 4 passes through the through hole 15, and the PCB board 5 is arranged in the potting groove 14. By pouring potting glue 7 into the potting groove 14, the welded joints of the wire harnesses and the PCB board 5 are hermetically fixed. The structure is simple and the sealing is reliable, meeting the sealing requirements between the wire harness and the mounting member, effectively preventing the motor oil and gas from entering the controller, and meeting the IP67 protection level of the motor and the controller. At the same time, an integrally formed metal insert 3 is provided on the side of the connecting lug 12, and a through first connecting hole 31 is provided on the metal insert 3. When the base 11 of the mounting member 1 is inserted into the motor cylinder block 8, the first connecting hole 31 is aligned with the second connecting hole 81 of the motor cylinder block 8. By pressing the metal insert 3 with a fastener, the fixing of the mounting member 1 is realized, which can prevent the axial displacement caused by vibration and lead to the failure of the wire harness, reduce the assembly difficulty, and improve the vibration reliability.

[0029] As Figure 2 shown, a plurality of first wire passing holes 51 arranged in a ring and a plurality of second wire passing holes 52 arranged in a ring are provided on the PCB board 5, and the second wire passing holes 52 are located inside the first wire passing holes 51. The first wire passing holes 51 are used to connect the first wire harness 4, and the second wire passing holes 52 are used to connect the second wire harness 6.

[0030] As Figure 4 shown, the through holes 15 are evenly distributed on the base 11 and correspond to the first wire passing holes 51 one by one, and the first wire harness 4 passes through the through holes 15.

[0031] As Figure 1 and Figure 4 shown, a sealing groove 13 is provided on the outer periphery of the base 11. The sealing groove 13 is close to the connecting lug 12, and a sealing ring 2 is arranged in the sealing groove 13 to realize the sealing and nesting of the base 11 in the motor cylinder block 8. The mounting member 1 and the motor cylinder block 8 are compression-sealed through the O-shaped sealing ring 2, meeting the sealing requirements between the mounting member 1 and the motor cylinder block 8.

[0032] In this embodiment, the mounting member 1 is made of plastic, and the mounting member 1 and the metal insert 3 are integrally injection-molded, with a simple structure and high reliability.

[0033] In this embodiment, the first wire harness 4 is a motor-end wire harness, and the second wire harness 6 is a controller-end wire harness. Both the first wire harness 4 and the second wire harness 6 are soldered to the PCB board 5.

[0034] Specifically, the head wire skin of the first wire harness 4, which is the motor end wire harness, is peeled off to expose the wire core. After passing through the first wire passing hole 51 on the PCB board 5, soldering is performed. Similarly, the head wire skin of the second wire harness 6, which is the controller end wire harness, is peeled off to expose the wire core. After passing through the second wire passing hole 52 on the PCB board 5, soldering is performed. The PCB board 5 is used for circuit transfer, and the first wire harness 4 and the second wire harness 6 are firmly connected to the PCB board 5 to form a wire harness assembly. This wire harness assembly is passed through the through hole 15 in the mounting member 1, as Figure 3 shown. The potting adhesive 7 is injected into the potting groove 14. Since the potting adhesive 7 has good fluidity, the soldering joints of the wire core and the PCB board 5 can be filled and sealed. After the potting adhesive 7 is cured, the mounting member 1 is inserted into the motor cylinder block 8, and the metal insert 3 is pressed tightly by screws, thereby fixing the mounting member 1. Through the compression and rebound of the sealing ring 2 and the filling of the potting adhesive 7, the sealing of the entire resolver connector is achieved, and it has a small occupied space, simple assembly, and high vibration reliability.

[0035] In addition to the above resolver connector sealing structure, the present invention also provides an electric vehicle including the resolver connector sealing structure disclosed in the above embodiment. The other structures of this electric vehicle can refer to the prior art and will not be elaborated here.

[0036] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A rotary connector sealing structure, characterized in that: include: A mounting member (1), a first wiring harness (4), a PCB board (5) and a second wiring harness (6); the mounting member (1) comprises an integrally formed base (11) and a connecting ear (12); the base (11) is provided with a plurality of through holes (15) passing through it so that the wiring harness can pass through; a through glue potting groove (14) is provided between the top of the base (11) and the connecting ear (12); the first wiring harness (4) and the second wiring harness (6) are respectively welded to two side surfaces of the PCB board (5), the first wiring harness (4) passes through the through holes (15), and the PCB board (5) is arranged in the glue potting groove (14). 14), the potting glue (7) is poured into the potting groove (14) to achieve the sealing and fixation of the welding connection between the first wiring harness (4) and the second wiring harness (6) and the PCB board (5); the side of the connecting ear (12) is provided with an integrally formed metal insert (3), and the metal insert (3) is provided with a first connecting hole (31) passing through; when the base (11) of the mounting member (1) is inserted into the motor cylinder (8), the first connecting hole (31) is aligned with the second connecting hole (81) of the motor cylinder (8), and the metal insert (3) is pressed by the fastener to achieve the fixation of the mounting member (1).

2. The rotary connector sealing structure according to claim 1, characterized in that: The PCB board (5) is provided with a plurality of first threading holes (51) arranged in a circular ring and a plurality of second threading holes (52) arranged in a circular ring, and the second threading holes (52) are located inside the first threading holes (51), the first threading holes (51) are used to connect the first wire harness (4), and the second threading holes (52) are used to connect the second wire harness (6).

3. The rotary connector sealing structure according to claim 2, characterized in that: The through holes (15) are evenly distributed on the base (11) and correspond one-to-one with the first threading holes (51).

4. The rotary connector sealing structure according to claim 2, characterized in that: A sealing groove (13) is provided on the outer periphery of the base (11), the sealing groove (13) is close to the connecting ear (12), and a sealing ring (2) is provided in the sealing groove (13) to achieve sealing of the base (11) and nesting in the motor cylinder body (8).

5. The rotary connector sealing structure according to any one of claims 1 to 4, characterized in that: The mounting piece (1) is made of plastic, and the mounting piece (1) and the metal insert (3) are integrally injection molded.

6. The rotary connector sealing structure according to any one of claims 1 to 4, characterized in that: One of the first wiring harness (4) and the second wiring harness (6) is a motor end wiring harness, and the other is a controller end wiring harness.

7. The rotary connector sealing structure according to any one of claims 1 to 4, characterized in that: The first wiring harness (4) and the second wiring harness (6) are both connected to the PCB board (5) by soldering.

8. The rotary connector sealing structure according to any one of claims 1 to 4, characterized in that: The first connecting hole (31) and the second connecting hole (81) are both threaded holes, and the fasteners are screws.

9. The rotary connector sealing structure according to any one of claims 1 to 4, characterized in that: The base (11) is a cylindrical structure.

10. An electric vehicle, characterized in that: The invention comprises a rotary connector sealing structure as claimed in any one of claims 1 to 9.

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