CN219459659U - Motor controller magnetic ring protection box - Google Patents

Abstract

The utility model provides a motor controller magnetic ring protects box, includes protects box body, magnetic ring body and protects box installation department, the magnetic ring body assemble in protect in the box body, protect box installation department and copper bar body link firmly integrative, protect the box body with the magnetic ring body passes through protect box installation department with copper bar body links firmly, protect box installation department including linking firmly integrative protect box assembly department and magnetic ring assembly department, protect box assembly department by the copper bar body is followed its circumference outwards extends and gets, protect the box body along the axial of copper bar body with protect box assembly department and hug closely the bonding, the magnetic ring body is followed the circumference card of copper bar body is located in the magnetic ring assembly department. The motor controller magnetic ring protection box can be adaptive to bent copper bars or traditional straight copper bars, and the space occupied by the protection box body and the protection box mounting part is not large, so that the arrangement and the mounting of other peripheral parts and the volume power density are facilitated.

Description

Motor controller magnetic ring protection box

Technical Field

The utility model relates to the technical field of magnetic ring protection boxes, in particular to a magnetic ring protection box of a motor controller.

Background

In recent years, new energy electric automobiles have been developed in a long-term manner both from the market share and the product technology. However, the problems of short actual endurance mileage, long charging time and the like of the new energy electric vehicle are still concerns of many consumers at present, and are also obstacle points for restricting the further development of the electric vehicle. Therefore, each large research and development manufacturer is also gradually searching and developing a high-voltage platform, and the voltage can be increased to reduce the current loss and increase the charging power, so that the endurance mileage is improved, and the charging time is reduced.

Due to the voltage rise and the use of wide-bandgap third-generation semiconductor materials, the electromagnetic compatibility EMC of the system faces greater challenges, and the EMC is also brought into the national strong inspection range. The motor controller is used as a brain for controlling the motor, and also faces EMC problems, and serious consequences such as vehicle runaway, communication faults and the like can be caused by EMC failure, so that the EMC related design of the motor controller is very critical.

In order to weaken electromagnetic interference, adding a magnetic ring at the direct current input end or the alternating current output end of the motor controller to restrain is an effective scheme for weakening electromagnetic interference. Since the magnetic ring is fragile when being subjected to external force, a corresponding protection device is required to be arranged. The conventional magnetic ring protection device has complex production and installation processes, cannot be adapted to various copper bars, and has poor support on bending copper bars.

Disclosure of Invention

The utility model provides a motor controller magnetic ring protection box which is applicable to various copper bars and is simple in production and demolding.

The magnetic ring protection box of the motor controller comprises a protection box body, a magnetic ring body and a protection box installation part, wherein the magnetic ring body is assembled in the protection box body, the protection box installation part is fixedly connected with a copper bar body into a whole, the protection box body and the magnetic ring body are fixedly connected with the copper bar body through the protection box installation part, the protection box installation part comprises a protection box assembly part and a magnetic ring assembly part which are fixedly connected into a whole, the protection box assembly part is obtained by extending the copper bar body outwards along the circumferential direction of the copper bar body, the protection box body is tightly adhered with the protection box assembly part along the axial direction of the copper bar body, and the magnetic ring body is clamped in the magnetic ring assembly part along the circumferential direction of the copper bar body.

Further, the protection box body comprises a shell part and a first matching surface, the shell part is a protection shell which is wrapped outside the magnetic ring body along the circumferential direction of the copper bar body, the first matching surface is obtained by extending the shell part inwards along the circumferential direction of the copper bar body, the first matching surface is propped against the protection box assembly part along the axial direction of the copper bar body, and the protection box body is integrally bonded with the protection box assembly part through the first matching surface.

Further, the box-protecting assembly part comprises a second matching surface, the second matching surface is obtained by extending the circumference of the copper bar body outwards, the second matching surface is propped against the first matching surface along the axial direction of the copper bar body, and the box-protecting assembly part is bonded with the first matching surface into a whole through the second matching surface and is sealed.

Further, the protection box body further comprises a buckling part, and the protection box body is clamped with the protection box assembly part through the buckling part.

Further, the box-protecting assembly part further comprises a lock tongue part, the lock tongue part is formed by protruding one side, far away from the first matching surface, of the second matching surface, the lock tongue part is used for extending into the buckling part and locking with the buckling part relatively, and the box-protecting assembly part is clamped with the box-protecting body through the lock tongue part.

Further, the magnetic ring assembly portion comprises a reinforcing rib, the reinforcing rib is obtained by extending from one side of the second matching surface towards the first matching surface along the axial direction of the copper bar body, and the length of the reinforcing rib in the axial direction of the copper bar body is greater than or equal to the length of the shell portion in the axial direction of the copper bar body.

Further, the magnetic ring assembly part further comprises a magnetic ring guide part, wherein the magnetic ring guide part is a guide rib which is arranged along the axial direction of the copper bar body and used for providing guide for the shell part, and the magnetic ring guide part is arranged at the periphery of the second matching surface.

Further, a first groove is formed in the reinforcing rib, the first groove is formed by the reinforcing rib being recessed inwards along the circumferential direction of the copper bar body, the first groove is used for accommodating the magnetic ring body, and the magnetic ring body is clamped and fixed in the protective box installation part through the first groove.

Further, the copper bar body comprises a bending part and a straight part which are fixedly connected into a whole, the straight part is provided with a copper bar head, an injection molding support used for being assembled with the motor shell and a protection box installation part, the bending part is provided with an insert used for being assembled with the motor shell, the bending part is formed by bending one side, close to the protection box installation part, of the straight part, and the bending part is mutually perpendicular to the straight part.

Further, the cartridge mounting portion is provided on the straight portion.

The motor controller magnetic ring protection box provides protection for the magnetic ring body through the protection box body with the shell part, realizes connection and sealing between the protection box body and the protection box mounting part fixed on the copper bar body through the first assembly surface and the second assembly surface, and has simple structure and easy production. The motor controller magnetic ring protection box can be adapted to a bent copper bar or a traditional straight copper bar, and the space occupied by the protection box body and the protection box mounting part is not large, so that the protection box is easy to directly and axially mount from the straight part of the bent copper bar, and is very beneficial to the arrangement and the mounting of other peripheral parts and the volume power density. In addition, the structure of the protective box body is simple, the mold stripping difficulty is low during production, the upper and lower mold stripping mode is convenient to use for production, the problems that the mold stripping stroke and partial area shielding cannot be used for mold stripping and the like are solved, and the mold cost of the complex structure is reduced to the greatest extent.

Drawings

Fig. 1 is a schematic diagram of a magnetic ring protection box of a motor controller provided by the utility model.

Fig. 2 is an exploded view of a magnetic ring protection case of a motor controller according to the present utility model.

Fig. 3 is a side view of a motor controller magnet ring cartridge of the present utility model.

Fig. 4 is a schematic view of a copper bar body according to the present utility model.

Fig. 5 is a schematic view of a protection box body in the present utility model.

Fig. 6 is another schematic view of the protection box body in the present utility model.

Fig. 7 is a cross-sectional view of a cartridge mounting portion in the present utility model.

Detailed Description

In order to further describe the technical means and effects adopted by the present utility model to achieve the preset purpose, the following detailed description of the present utility model is given with reference to the accompanying drawings and preferred embodiments.

The terms first, second, third, fourth and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Referring to fig. 1 to 3, the magnetic ring protection box of the motor controller of the present utility model includes a protection box body 1, a magnetic ring body 2 and a protection box mounting portion 3, wherein the magnetic ring body 2 is assembled in the protection box body 1, the protection box mounting portion 3 is fixedly connected with a copper bar body 4, the protection box body 1 and the magnetic ring body 2 are fixedly connected with the copper bar body 4 through the protection box mounting portion 3, the protection box mounting portion 3 includes a protection box assembling portion 31 and a magnetic ring assembling portion 32 which are fixedly connected, the protection box body 1 is tightly adhered to the protection box assembling portion 31 along the axial direction of the copper bar body 4, and the magnetic ring body 2 is clamped in the magnetic ring assembling portion 32 along the circumferential direction of the copper bar body 4. In this embodiment, the copper bar body 4 includes a bending portion 42 and a straight portion 41 that are fixedly connected integrally, the straight portion 41 is provided with a copper bar head 6, an injection molding bracket 7 for assembling with a motor housing, and a protection box mounting portion 3, the bending portion 42 is provided with an insert 8 for assembling with the motor housing, the bending portion 42 is obtained by bending a side, close to the protection box mounting portion 3, of the straight portion 41, the bending portion 42 is mutually perpendicular to the straight portion 41, and the protection box mounting portion 3 is arranged on the straight portion 41. The motor controller magnetic ring protection box can be adapted to a bent copper bar or a traditional straight copper bar, and the space occupied by the protection box body 1 and the protection box mounting part 3 is not large, so that the protection box is easy to directly and axially load from the straight part 41 of the bent copper bar, is extremely beneficial to the arrangement and the mounting of other peripheral parts and the volume power density, and indirectly reduces the production cost of a copper bar assembly. In other embodiments, the bent copper bar may also have a bending portion 42 with a larger or smaller bending angle relative to the straight portion 41, or a complex copper bar bent along different directions and different angles, so long as a space for assembling the protection box body 1 is reserved. The copper bars matched with the motor controller magnetic ring protection box can be PN two-phase copper bars or UVW three-phase copper bars.

Referring to fig. 4 to 7, further, the protection box body 1 includes a housing portion 11 and a first mating surface 12, the housing portion 11 is a protective shell that is wrapped around the magnetic ring body 2 along the circumference of the straight portion 41 of the copper bar body 4, the first mating surface 12 is obtained by extending the housing portion 11 inward along the circumference of the straight portion 41 of the copper bar body 4, the first mating surface 12 abuts against the protection box assembly portion 31 along the axial direction of the straight portion 41 of the copper bar body 4, and the protection box body 1 is bonded with the protection box assembly portion 31 integrally through the first mating surface 12. Specifically, in the present embodiment, the housing 11 is a rectangular frame with a rounded edge, which has a certain height and thickness, and the height of the housing 11 is at least greater than the length of the magnetic ring body 2 in the axial direction of the copper bar body 4, so as to ensure the cladding protection effect on the magnetic ring body 2; the first mating surface 12 is formed by extending the inner edge of the housing 11 and the copper bar body 4 circumferentially and inwardly, one surface of the first mating surface facing the magnetic ring body 2 can play a role in limiting the magnetic ring body 2 along the axial direction of the straight portion 41 of the copper bar body 4, and the surface facing away from the magnetic ring body 2 is used for abutting against and bonding and sealing with the protection box assembly 31. The protective box body 1 is simple in structure, low in mold stripping difficulty in production, convenient to use in upper and lower mold stripping production, solves the problems that a mold stripping stroke and a partial area are blocked, and the like, and reduces the mold cost of a complex structure to the greatest extent; the protective box body 1 can go straight in and out during assembly, so that the assembly complexity is greatly reduced.

Further, the box fitting portion 31 includes a second fitting surface 311, the second fitting surface 311 is obtained by extending the circumference of the straight portion 41 of the copper bar body 4 outwards, the second fitting surface 311 abuts against the first fitting surface 12 along the axial direction of the straight portion 41 of the copper bar body 4, and the box fitting portion 31 is adhered to the first fitting surface 12 integrally through the second fitting surface 311. Specifically, in the present embodiment, the second mating surface 311 has a certain dimension in the circumferential direction of the straight portion 41 of the copper bar body 4, which is at least larger than the dimension of the first mating surface 12 in the circumferential direction of the copper bar body 4, so as to ensure that the contact area with the first mating surface 12 is sufficient, and in addition, a part of the area for fixing the magnetic ring body 2 in the magnetic ring assembly portion 32 needs to be reserved.

Further, the magnetic ring assembly portion 32 includes a reinforcing rib 321, the reinforcing rib 321 is obtained by extending from the second mating surface 311 toward one side of the first mating surface 12 along the axial direction of the straight portion 41 of the copper bar body 4, the length of the reinforcing rib 321 in the axial direction of the straight portion 41 of the copper bar body 4 is greater than or equal to the length of the housing portion 11 in the axial direction of the straight portion 41 of the copper bar body 4, the reinforcing rib 321 is provided with a first groove 5, the first groove 5 is obtained by recessing the reinforcing rib 321 inwards along the circumferential direction of the straight portion 41 of the copper bar body 4, the first groove 5 is used for accommodating the magnetic ring body 2, and the magnetic ring body 2 is clamped in the protection box installation portion 3 through the first groove 5. Specifically, in the present embodiment, the reinforcing rib 321 is disposed on one side of the straight portion 41 of the copper bar body 4, and is also on the same side of the copper bar head 6, and the length of the reinforcing rib 321 in the axial direction of the straight portion 41 of the copper bar body 4 is at least greater than the length of the magnetic ring body 2 in the axial direction of the straight portion 41 of the copper bar body 4; the first groove 5 is formed on the reinforcing rib 321 at a position close to the straight portion 41 and relatively far from the copper bar head 6.

Further, the protection box body 1 further comprises a buckling part 13, the buckling part 13 protrudes to one side of the shell part 11 facing the bending part 42, and the protection box body 1 is clamped with the protection box assembly 31 through the buckling part 13; the cartridge assembly part 31 comprises a latch part 312 corresponding to the latch part, the latch part 312 is formed by protruding one side, far away from the first matching surface 12, of the second matching surface 311, the latch part 312 is used for extending into the buckling part 13 and locking the buckling part 13 relatively, and the cartridge assembly part 31 is clamped with the cartridge body 1 through the latch part 312. Specifically, in the present embodiment, the two fastening portions 13 are disposed on two opposite sides of the housing portion 11, and the latch portions 312 are correspondingly disposed on two opposite sides of the second mating surface 311, where the fastening portions 13 and the latch portions 312 are used to limit the housing portion 11 and the magnetic ring body 2 therein along the axial direction and the circumferential direction of the straight portion 41 of the copper bar body 4. The utility model has the advantages that the whole installation of the magnetic ring protection box is simple and convenient through the simple and reliable buckle structure, the omnibearing limit is carried out, the reliability is high, and the cost is lower.

Further, the magnetic ring assembly portion 32 further includes a magnetic ring guiding portion 322, the magnetic ring guiding portion 322 is a guiding rib disposed along the axial direction of the straight portion 41 of the copper bar body 4 and used for guiding the housing portion 11, and the magnetic ring guiding portion 322 is disposed at the periphery of the second mating surface 311. In the present embodiment, the magnetic ring guiding portion 322 is disposed near the locking tongue portion 312, which is specifically an extending rib disposed along the axial direction of the straight portion 41 of the copper bar body 4, for limiting the housing portion 11 along the circumference of the straight portion 41 of the copper bar body 4, preventing it from deviating and falling out during assembly, and providing an additional circumferential force point for the same.

Specifically, when the motor controller magnetic ring protection box is assembled, the tooling jig is used for fixing the copper bar body 4, then the straight part 41 of the copper bar body is vertically upwards placed, and then sealing glue resistant to 150 ℃ and above is coated on the surface of the second matching surface 311 facing the first matching surface 12. The other side is required to put the magnetic ring body 2 into the protective box body 1, and the magnetic ring body is preassembled into a whole so as to be convenient to install in a limited space. Then, the magnetic ring body 2 and the protective box body 1 are placed on the protective box mounting part 3 along the magnetic ring guiding part 322, and meanwhile, the buckling part 13 is meshed with the locking tongue part 312 for assembly, the magnetic ring body 2 is clamped into the first groove 5, and the first matching surface 12 is bonded with the second matching surface 311. At this time, the protection box body 1 and the protection box mounting portion 3 are in a zero degree of freedom state, and along with the rapid solidification of the glue, the first matching surface 12 and the second matching surface 311 also form a seal, so that the potting material is prevented from leaking in the subsequent steps. Finally, the magnetic ring body 2 is filled with fixed materials and solidified, so that the magnetic ring is prevented from being broken or relatively displaced in the vibration process.

In summary, the motor controller magnetic ring protection box provides protection for the magnetic ring body through the protection box body with the shell part, and the connection and the sealing of the protection box body and the protection box installation part fixed on the copper bar body are realized through the first assembly surface and the second assembly surface, so that the motor controller magnetic ring protection box is simple in structure and easy to produce. The motor controller magnetic ring protection box can be adapted to a bent copper bar or a traditional straight copper bar, and the space occupied by the protection box body and the protection box mounting part is not large, so that the protection box is easy to directly and axially mount from the straight part of the bent copper bar, and is very beneficial to the arrangement and the mounting of other peripheral parts and the volume power density. In addition, the structure of the protective box body is simple, the mold stripping difficulty is low during production, the upper and lower mold stripping mode is convenient to use for production, the problems that the mold stripping stroke and partial area shielding cannot be used for mold stripping and the like are solved, and the mold cost of the complex structure is reduced to the greatest extent.

The foregoing is merely illustrative embodiments of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present utility model, and the utility model should be covered. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a motor controller magnetic ring protects box which characterized in that: including protect box body (1), magnetic ring body (2) and protect box installation department (3), magnetic ring body (2) assemble in protect box body (1), protect box installation department (3) with copper bar body (4) link firmly integrative, protect box body (1) with magnetic ring body (2) pass through protect box installation department (3) with copper bar body (4) link firmly, protect box installation department (3) including linking firmly integrative protect box assembly department (31) and magnetic ring assembly department (32), protect box assembly department (31) by copper bar body (4) are followed its circumference outwards extends and are obtained, protect box body (1) follow the axial of copper bar body (4) with protect box assembly department (31) are hugged closely the bonding, magnetic ring body (2) are followed the circumference card of copper bar body (4) is located in magnetic ring assembly department (32).

2. The motor controller magnet ring cartridge of claim 1, wherein: the protection box comprises a protection box body (1) and is characterized in that the protection box body (1) comprises a shell body (11) and a first matching surface (12), the shell body (11) is circumferentially wrapped on the outer protection shell of the magnetic ring body (2) along the copper bar body (4), the first matching surface (12) is formed by extending the shell body (11) inwards along the circumferential direction of the copper bar body (4), the first matching surface (12) is propped against the protection box matching part (31) along the axial direction of the copper bar body (4), and the protection box body (1) is integrally bonded with the protection box matching part (31) through the first matching surface (12).

3. The motor controller magnet ring cartridge of claim 2, wherein: the protection box assembly part (31) comprises a second matching surface (311), the second matching surface (311) is formed by extending the circumference of the copper bar body (4) outwards, the second matching surface (311) is propped against the first matching surface (12) along the axial direction of the copper bar body (4), and the protection box assembly part (31) is adhered with the first matching surface (12) integrally through the second matching surface (311) and sealed.

4. A motor controller magnet ring cartridge as claimed in claim 3, wherein: the protection box body (1) further comprises a buckling part (13), and the protection box body (1) is clamped with the protection box assembly part (31) through the buckling part (13).

5. A motor controller magnet ring cartridge as defined in claim 4, wherein: the protection box assembly part (31) further comprises a lock tongue part (312), the lock tongue part (312) is formed by protruding one side, away from the first matching surface (12), of the second matching surface (311), the lock tongue part (312) is used for extending into the buckling part (13) and locking relative to the buckling part (13), and the protection box assembly part (31) is clamped with the protection box body (1) through the lock tongue part (312).

6. A motor controller magnet ring cartridge as claimed in claim 3, wherein: the magnetic ring assembly part (32) comprises a reinforcing rib (321), the reinforcing rib (321) is formed by extending one side of the second matching surface (311) towards the first matching surface (12) along the axial direction of the copper bar body (4), and the length of the reinforcing rib (321) in the axial direction of the copper bar body (4) is greater than or equal to the length of the shell part (11) in the axial direction of the copper bar body (4).

7. A motor controller magnet ring cartridge as defined in claim 6, wherein: the magnetic ring assembly part (32) further comprises a magnetic ring guide part (322), the magnetic ring guide part (322) is a guide rib which is arranged along the axial direction of the copper bar body (4) and used for providing guide for the shell part (11), and the magnetic ring guide part (322) is arranged at the periphery of the second matching surface (311).

8. A motor controller magnet ring cartridge as defined in claim 6, wherein: the novel copper bar is characterized in that a first groove (5) is formed in the reinforcing rib (321), the first groove (5) is formed by the reinforcing rib (321) being recessed inwards along the circumferential direction of the copper bar body (4), the first groove (5) is used for accommodating the magnetic ring body (2), and the magnetic ring body (2) is clamped and fixed in the protective box mounting part (3) through the first groove (5).

9. The motor controller magnet ring cartridge as set forth in claim 8, wherein: the copper bar body (4) comprises a bending part (42) and a straight part (41) which are fixedly connected into a whole, a copper bar head (6) is arranged on the straight part (41), an injection molding support (7) for assembling with a motor shell and a protection box mounting part (3) are arranged on the straight part (41), an insert (8) for assembling with the motor shell is arranged on the bending part (42), the bending part (42) is formed by bending one side, close to the protection box mounting part (3), of the straight part (41), and the bending part (42) is perpendicular to the straight part (41).

10. The motor controller magnet ring cartridge as set forth in claim 9, wherein: the protection box mounting part (3) is arranged on the straight part (41).