Connecting piece with sealing structure and motor system

Abstract

The utility model discloses a connecting piece with a sealing structure and a motor system, relates to the technical field of motor control, and aims to solve the problem that the sealing process of the existing insulating wire holder is tedious. The connecting piece with the sealing structure comprises an insulating connecting piece and a conductive structure used for connecting the insulating connecting piece and a motor controller; the insulating connecting piece is connected with the motor stator, and the sealing gasket is arranged on the end face of the insulating connecting piece and used for sealing the insulating connecting piece and the motor shell, so that the motor and the electric controller can be completely sealed and isolated only by assembling the connecting piece, operation is convenient, and convenience and rapidness are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor control technical field more specifically, relate to a kind of connecting piece and motor system with sealing structure. BACKGROUND

[0002] With the high-speed development of new energy electric vehicle industry, the degree of integration of electric drive is higher and higher, and the design of mechatronic two-in-one assembly has been maturely used in the industry. The motor controller borrows the motor shell to form an integrated design. As the driving control unit of the motor, the motor controller provides the motor with current and voltage matching the vehicle demand to ensure that the speed and torque of the motor meet the vehicle requirements.

[0003] Due to the temperature difference between the motor controller and the motor during operation, the connection between the motor controller and the motor needs to be sealed and isolated. However, the insulation terminal block in the prior art has many parts that need to be sealed with each other, resulting in a complicated sealing process and a long sealing time.

[0004] Therefore, how to solve the problem of complicated sealing process of the existing insulation terminal block is a problem that needs to be solved by the technical personnel in the field. INVENTION CONTENTS

[0005] Therefore, the purpose of the utility model is to provide a connecting piece with a sealing structure, which can completely seal and isolate the motor and the electric control by assembling the connecting piece, facilitating operation and being convenient and fast.

[0006] Another purpose of the utility model is to provide a motor system comprising the above-mentioned connecting piece with a sealing structure, which has good sealing performance.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A connecting piece with a sealing structure comprises an insulation connecting piece and a conductive structure for connecting the insulation connecting piece and the motor controller. The insulation connecting piece is connected to the motor stator. The end surface of the insulation connecting piece is provided with a sealing gasket for sealing the insulation connecting piece and the motor shell.

[0009] Preferably, the insulation connecting piece comprises a connecting column and a copper bar terminal arranged on the connecting column. The copper bar terminal is connected to the circuit board of the motor controller through the conductive structure.

[0010] Preferably, the connecting column is provided with three connecting columns, and the three connecting columns are connected by an arc-shaped connecting seat to form an arc-shaped structure. The copper bar terminal is provided with three copper bar terminals, and each copper bar terminal is arranged on a corresponding connecting column.

[0011] Preferably, the connecting column and the connecting seat are injection molded parts, and the connecting column, the connecting seat and the copper bar terminal are integrally injection molded.

[0012] Preferably, the conductive structure is a three-phase copper bar, and the copper bar terminals are connected to the circuit board through the three-phase copper bar.

[0013] Preferably, the bottom end of the connecting column is provided with a welding terminal, the motor stator is provided with a stator copper bar, and the welding terminal is welded to the stator copper bar.

[0014] Preferably, the connecting column and the copper bar terminal are both in a cylindrical structure, and the diameter of the copper bar terminal is smaller than that of the connecting column.

[0015] Preferably, the sealing gasket is arranged at the top end of the connecting column and surrounds the outer periphery of the copper bar terminal, and the sealing gasket is bonded to the connecting column.

[0016] Preferably, one of the connecting columns is connected to a lead column, the lead column is in a stepped shaft structure, a sealing gasket is arranged on the stepped surface of the lead column, the lead column is provided with a through hole extending along the axial direction of the lead column, the through hole is used to pass through a temperature detection line, one end of the temperature detection line is connected to a thermistor, the thermistor is arranged on the stator copper bar, the other end of the temperature detection line is connected to a connector, and the connector is plugged with a plug-in part of the circuit board.

[0017] Preferably, the sealing structure further comprises a rubber plug used to seal the through hole, the outer diameter of the rubber plug is greater than the diameter of the through hole, a circular hole used to mount the temperature detection line is arranged on the rubber plug, and the diameter of the circular hole is equal to the outer diameter of the temperature detection line.

[0018] A motor system comprising the connecting piece with a sealing structure according to any one of the preceding claims.

[0019] The connecting piece with a sealing structure comprises an insulating connecting piece and a conductive structure used to connect the insulating connecting piece and a motor controller, the insulating connecting piece is connected to a motor stator, the motor controller and the motor stator are effectively connected by arranging the insulating connecting piece and the conductive structure, the current supplied to the motor stator is controlled by the motor controller, the current output by the motor controller is transmitted to the motor stator through the conductive structure to generate a magnetic field, thereby driving the motor rotor to rotate and synchronously driving the motor shaft to rotate to output power, thereby converting electric energy into mechanical energy, the end surface of the insulating connecting piece is provided with a sealing gasket used to seal the insulating connecting piece and a motor housing, the insulating connecting piece is first mounted on the motor stator, and then the motor stator is mounted on the motor housing, at this time, the sealing gasket on the insulating connecting piece directly contacts and seals the motor housing, thereby sealing the insulating connecting piece and the motor housing, achieving the effect of isolating the motor and the motor controller, and the whole mounting and sealing process is simple, fast and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only a part of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] Figure 1 The structural diagram of the connecting piece with sealing structure provided by the present application is shown in the figure.

[0022] Figure 2 The installation diagram of the connecting piece with sealing structure provided by the present application is shown in the figure.

[0023] Figure 3 The installation top view of the connecting piece with sealing structure provided by the present application is shown in the figure.

[0024] Figure 4 The installation sectional view of the connecting piece with sealing structure provided by the present application is shown in the figure.

[0025] Reference signs:

[0026] 1-insulating connecting piece, 11-connecting column, 12-copper bar terminal, 13-connecting seat, 14-welding terminal;

[0027] 2-conductive structure;

[0028] 3-motor stator;

[0029] 4-sealing gasket;

[0030] 5-motor housing;

[0031] 6-circuit board;

[0032] 7-conductive column, 71-through hole, 72-rubber plug;

[0033] 8-temperature detection line;

[0034] 9-thermistor;

[0035] 10-connector. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0037] In the utility model, unless another explicit provision and limitation, the terms "mount", "connect", "connect", "fix" and so on should be broad understanding, for example, can be fixed connection, also can be detachable connection, or integrally connect, can be mechanical connection, also can be electrical connection, can be direct connection, also can indirectly connect through intermediate medium, can be the communication of two element interiors. For ordinary skilled person in the art, the above terms can be understood according to the specific meaning in the utility model.

[0038] The utility model discloses a kind of connecting pieces with sealing structure, just by assembling connecting column 11, motor and electric control can be completely sealed isolation, convenient operation, and convenient and fast.The other core of the utility model is to provide a kind of motor system comprising the connecting piece with sealing structure described above, the sealing of this motor system is good.

[0039] Please refer to Figure 1 , Figure 2 , Figure 3 And Figure 4 , a kind of connecting piece with sealing structure includes insulating connecting piece 1, conducting structure 2 and sealing pad 4.

[0040] Specifically, conducting structure 2 is used to connect insulating connecting piece 1 with motor controller, insulating connecting piece 1 is connected with motor stator 3, by setting insulating connecting piece 1 and conducting structure 2, the effective connection of motor controller and motor stator 3 is realized, the current that is transported to motor stator 3 is controlled by motor controller, the current that motor controller outputs is transmitted to motor stator 3 by conducting structure 2, to generate magnetic field, to drive motor rotor rotation, and then drive motor shaft synchronous rotation, to output power, to convert electric energy into mechanical energy, the end surface of insulating connecting piece 1 is equipped with sealing pad 4, to seal insulating connecting piece 1 and motor housing 5, insulating connecting piece 1 is installed on motor stator 3 first, then motor stator 3 is installed on motor housing 5, at this time, the sealing pad 4 on insulating connecting piece 1 will be directly contacted with motor housing 5 and sealed, to seal insulating connecting piece 1 and motor housing 5, to achieve the effect of isolating motor and motor controller, the whole installation sealing process is simple and fast and convenient.

[0041] The connecting piece with sealing structure set in the above manner seals and isolates the connection between motor and motor controller, and achieves the purposes of low cost, high integration and light weight.

[0042] In the above embodiment, insulating connecting piece 1 includes connecting column 11 and copper bar terminal 12 arranged on connecting column 11, and copper bar terminal 12 is connected with the circuit board 6 of motor controller through conducting structure 2.

[0043] It should be noted that when using the insulating connecting piece 1, the connecting column 11 is first installed on the motor stator 3, and then the copper bar terminal 12 on the connecting column 11 is connected with the circuit board 6 through the conductive structure 2, so as to realize the connection of the motor stator 3 and the circuit board 6. The current output to the motor stator 3 is controlled through the circuit board 6, the current output by the circuit board 6 is transmitted through the conductive structure 2, and the current is transmitted to the motor stator 3 through the copper bar terminal 12. A magnetic field is generated on the motor stator 3 to drive the motor rotor to rotate, and at the same time, the motor shaft is synchronously rotated along the axis direction of the motor shaft, so as to output power. The above process realizes the process of converting electrical energy into mechanical energy.

[0044] In the above case, the connecting column 11 is provided with three, and the three connecting columns 11 are connected through the arc-shaped connecting seat 13 to arrange into an arc-shaped structure, and the copper bar terminal 12 is provided with three and arranged on the corresponding connecting column 11.

[0045] It can be understood that the connecting seat 13 connects the connecting column 11 to form an arc-shaped structure, so as to be suitable for the shape of the motor stator 3, so that the connecting column 11 can be accurately installed on the motor stator 3. In this embodiment, the connecting column 11 is provided with three, and the copper bar terminal 12 is also provided with three to form a three-phase copper bar terminal. The connecting column 11 corresponds to the copper bar terminal 12 one by one.

[0046] Further, the connecting column 11 and the connecting seat 13 are injection molded parts, and the connecting column 11, the connecting seat 13 and the copper bar terminal 12 are integrally injection molded.

[0047] It should be noted that the connecting column 11 and the connecting seat 13 are provided as injection molded parts to reduce the overall weight and achieve the effect of light weight. The effective connection of the connecting column 11, the connecting seat 13 and the copper bar terminal 12 is realized by injection molding, and the integration of the whole is improved and the production cost is reduced.

[0048] In the above embodiment, the conductive structure 2 is a three-phase copper bar, and the copper bar terminal 12 is connected with the circuit board 6 through the three-phase copper bar.

[0049] It can be understood that the three-phase copper bar terminal is connected with the circuit board 6 through the three-phase copper bar, and the three-phase copper bar includes three copper bars respectively connected with the corresponding copper bar terminal 12, and the three copper bars are connected through injection molding.

[0050] On the basis of the above embodiment, the bottom end of the connecting column 11 is provided with a welding terminal 14, the motor stator 3 is provided with a stator copper bar, and the welding terminal 14 is welded with the stator copper bar.

[0051] It should be noted that in use, the welding terminal 14 is welded with the stator copper bar first, and then the welded motor stator 3 is installed in the motor housing 5, so that the sealing gasket 4 on the copper bar terminal 12 is directly in contact with the motor housing 5 for sealing, thereby sealing the copper bar terminal 12 and the motor housing 5, achieving the effect of isolating the motor and the motor controller, and then the three-phase copper bar terminal is connected with the circuit board 6 through the three-phase copper bar, realizing electrical and functional connection.

[0052] In the above embodiment, the connecting column 11 and the copper bar terminal 12 are both cylindrical structures, and the diameter of the copper bar terminal 12 is smaller than the diameter of the connecting column 11.

[0053] It can be understood that the connecting column 11 and the copper bar terminal 12 are two coaxially arranged cylindrical structures, and the diameters of the connecting column 11 and the copper bar terminal 12 are designed to be different, so that the top end of the connecting column 11 can leave space for installing the sealing gasket 4.

[0054] As a preferred embodiment, the sealing gasket 4 is arranged at the top end of the connecting column 11 and surrounds the outer periphery of the copper bar terminal 12, and the sealing gasket 4 is bonded with the connecting column 11.

[0055] It should be noted that one end surface of the sealing gasket 4 is provided with adhesive to realize bonding of the sealing gasket 4 with the connecting column 11. After assembly of the connecting column 11, the sealing gasket 4 will be in contact and compression with the motor housing 5, achieving sealing effect.

[0056] In the above case, one of the connecting columns 11 is connected with the lead column 7, the lead column 7 is a stepped shaft structure, and the stepped surface of the lead column 7 is provided with the sealing gasket 4. The lead column 7 is provided with a through hole 71 extending along the axial direction of the lead column 7, and the through hole 71 is used to pass through the temperature detection line 8. One end of the temperature detection line 8 is connected with the thermistor 9, and the thermistor 9 is arranged on the stator copper bar. The other end of the temperature detection line 8 is connected with the connector 10, and the connector 10 is plugged with the plug-in part of the circuit board 6.

[0057] It can be understood that the first end of the temperature detection line 8 is connected with the thermistor 9, the thermistor 9 is welded on the stator copper bar, the second end of the temperature detection line 8 is connected with the connector 10, and the connector 10 is plugged with the plug-in part of the circuit board 6, realizing effective connection of the thermistor 9 with the circuit board 6. In use, the temperature of the stator copper bar is detected in real time by the thermistor 9, and the temperature is converted into the resistance value of the thermistor 9. The resistance value of the thermistor 9 is transmitted to the circuit board 6 through the temperature detection line 8, and the temperature of the motor stator 3 is calculated by the circuit board 6.

[0058] The stepped surface of the lead post 7 on which the sealing gasket 4 is mounted is flush with the end surface of the connecting post 11 on which the sealing gasket 4 is mounted, the connecting post 11 is integrally mounted on the stator copper bar, then the motor stator 3 is mounted on the motor housing 5, so that the sealing gaskets 4 on the connecting post 11 and the lead post 7 are in abutment with the motor housing 5, thereby achieving the effect of isolating the motor from the motor controller.

[0059] In the embodiment, the specification of the sealing gasket 4 is not limited, and is selected according to actual conditions.

[0060] In the above embodiment, the rubber plug 72 for sealing the through hole 71 is further included, the outer diameter of the rubber plug 72 is greater than the diameter of the through hole 71, and a circular hole for mounting the temperature detection wire 8 is arranged on the rubber plug 72, and the diameter of the circular hole is equal to the outer diameter of the temperature detection wire 8.

[0061] It should be noted that the temperature detection wire 8 is passed through the circular hole on the rubber plug 72, one end of the temperature detection wire 8 is connected with the connector 10, and then the rubber plug 72 is extruded into the through hole 71 on the lead post 7, at this time, the outer circle of the rubber plug 72 is tightly attached to the inner wall of the through hole 71, and the through hole 71 generates a radial extrusion force on the rubber plug 72, so that the temperature detection wire 8 in the circular hole is further extruded and sealed.

[0062] In summary, the connecting piece with a sealing structure provided by the utility model is integrally assembled before use, then the welding terminal 14 and the thermistor 9 are welded with the stator copper bar, the connection of the insulating connecting piece 1 and the motor stator 3 is realized, then the motor stator 3 is mounted in the motor housing 5, in the mounting process, the sealing gaskets 4 on the connecting post 11 and the lead post 7 are in contact with the motor housing 5 and are extruded in the mounting process, so as to seal the connecting post 11, the lead post 7 and the motor housing 5, and the effect of isolating the motor from the motor controller is realized, after the motor stator 3 is mounted in place, the connector 10 is inserted with the plug-in part of the circuit board 6, the three-phase copper bar terminal is connected with the circuit board 6 through the three-phase copper bar, and the electrical and functional connection is realized.

[0063] The insulating connecting piece 1 in the application itself has the sealing gasket 4, the sealing with the motor housing 5 is realized in the process of mounting the insulating connecting piece 1, an additional sealing process is not needed, the operation is simple, convenient and fast.

[0064] In addition to the connecting piece with a sealing structure disclosed in the above various embodiments, the utility model further provides a motor system comprising the connecting piece with a sealing structure, and the structures of other parts of the motor system refer to the prior art, and will not be described herein.

[0065] It should be noted that the relative terms, such as first and second, are used herein solely to distinguish one entity from another entity, and do not necessarily require or imply any actual relationship or order between such entities.

[0066] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0067] The above has carried out the detailed introduction to the connecting piece and motor system with sealing structure provided by the utility model. The principle and implementation mode of the utility model are described by applying specific examples in this paper, and the above embodiment is only used for helping to understand the method and core idea of the utility model. It should be pointed out that for ordinary skilled person in the art, on the premise of not departing from the principle of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1. A connector with a sealing structure, characterized by, The application relates to an insulation connecting piece (1) and a conductive structure (2) for connecting the insulation connecting piece (1) with a motor controller, the insulation connecting piece (1) being connected with a motor stator (3), and the end surface of the insulation connecting piece (1) being provided with a sealing gasket (4) for sealing the insulation connecting piece (1) and a motor housing (5).

2. The connector with a sealing structure according to claim 1, characterized in that, The insulation connecting piece (1) comprises connecting columns (11) and copper bar terminals (12) arranged on the connecting columns (11), and the copper bar terminals (12) are connected with a circuit board (6) of the motor controller through the conductive structure (2).

3. The connector with a sealing structure according to claim 2, characterized in that, The connecting columns (11) are arranged in an arc-shaped structure through arc-shaped connecting seats (13), and the copper bar terminals (12) are arranged on the corresponding connecting columns (11).

4. The connector with a sealing structure according to claim 3, characterized in that, The connecting columns (11) and the connecting seats (13) are injection-molded parts, and the connecting columns (11), the connecting seats (13) and the copper bar terminals (12) are integrally injection-molded.

5. The connector with a seal structure according to claim 2, wherein The conductive structure (2) is a three-phase copper bar, and the copper bar terminals (12) are connected with the circuit board (6) through the three-phase copper bar.

6. The connector with a sealing structure according to claim 5, characterized in that, The bottom end of the connecting column (11) is provided with a welding terminal (14), the motor stator (3) is provided with a stator copper bar, and the welding terminal (14) is welded with the stator copper bar.

7. The connector with a sealing structure according to claim 6, characterized in that, The connecting column (11) and the copper bar terminal (12) are both in a cylindrical structure, and the diameter of the copper bar terminal (12) is smaller than that of the connecting column (11).

8. The connector with a sealing structure according to claim 6, wherein The sealing gasket (4) is arranged at the top end of the connecting column (11) and surrounds the outer periphery of the copper bar terminal (12), and the sealing gasket (4) is bonded with the connecting column (11).

9. The connector with a sealing structure according to claim 8, characterized in that, One of the connecting columns (11) is connected with a wire column (7), the wire column (7) is in a stepped shaft structure, the sealing gasket (4) is arranged on the stepped surface of the wire column (7), the wire column (7) is provided with a through hole (71) extending along the axial direction of the wire column (7), the through hole (71) is used for penetrating a temperature detection wire (8), one end of the temperature detection wire (8) is connected with a thermistor (9), the thermistor (9) is arranged on the stator copper bar, the other end of the temperature detection wire (8) is connected with a connector (10), and the connector (10) is plugged with a plug-in part of the circuit board (6).

10. The connector with a sealing structure according to claim 9, characterized in that, A rubber plug (72) is further arranged for sealing the through hole (71), the outer diameter of the rubber plug (72) is larger than the diameter of the through hole (71), a circular hole is arranged on the rubber plug (72) and used for mounting the temperature detection wire (8), and the diameter of the circular hole is equal to the outer diameter of the temperature detection wire (8).

11. An electric machine system characterized by The application further relates to a connecting piece with a sealing structure as claimed in any one of claims 1-10.

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