Axial motor connection structure and axial motor

Abstract

The application relates to the technical field of motors, in particular to an axial motor connecting structure and an axial motor. The axial motor connecting structure comprises a stator plate, a control board and a connecting plate. The stator plate comprises a phase line outlet end; the control board comprises a lead-through part; the connecting plate is flexible; the connecting plate comprises a first connecting part and a second connecting part; the first connecting part is connected with the phase line outlet end; and the second connecting part is connected with the lead-through part. The axial motor connecting structure provided by the application connects the stator plate and the control board through the connecting plate, so that the number of welding points is obviously reduced, the situation that the welding points are broken due to vibration during the rotation of a high-frequency axial motor is effectively avoided, the service life is prolonged, and the connecting plate can be bent at will to a certain extent, the relative positions of the stator plate and the control board are adjusted, and the disconnection risk of the stator plate and the control board is further reduced.

Description

Technical Field

[0001] This application relates to the field of motor technology, and in particular to an axial motor connection structure and an axial motor. Background Technology

[0002] Currently, driven by the intelligentization of high-end equipment, axial motors, with their advantages such as high power density and flat structure, have become core power components in fields such as electric drive systems for new energy vehicles and joints for industrial robots.

[0003] However, the control board and stator of traditional axial motors are connected by solder joints, which are numerous and prone to vibration and breakage during high-frequency axial motor rotation. This results in poor reliability under high-frequency vibration. Furthermore, the separate design of the control board and stator leads to high system integration complexity and redundant wiring, making it impossible for the motor to meet the requirements of miniaturization. Utility Model Content

[0004] The purpose of this application is to provide an axial motor connection structure and an axial motor, so as to solve to a certain extent the technical problem that the connection structure between the control board and the stator of the existing axial motor is prone to breakage due to vibration and other factors.

[0005] This application provides an axial motor connection structure, including:

[0006] Stator plate, the stator plate including phase line output terminals;

[0007] The electronic control board includes a conductive portion;

[0008] A connecting plate, the connecting plate being flexible; the connecting plate includes a first connecting part and a second connecting part, the first connecting part being connected to the phase line outlet end, and the second connecting part being connected to the conductive part.

[0009] In the above technical solution, the number of phase wire output terminals is further adapted to the number of conductive parts;

[0010] The number of the first connecting parts is not less than the number of the phase line outlets, and each phase line outlet is provided with one first connecting part; the number of the second connecting parts is not less than the number of the conductive parts, and each conductive part is provided with one second connecting part.

[0011] In any of the above technical solutions, the connecting plate further includes:

[0012] A flexible body, the flexible body including a first connecting end and a second connecting end spaced apart, the first connecting part being disposed at the first connecting end, and the second connecting part being disposed at the second connecting end;

[0013] A connecting wire is disposed within the flexible body and is conductive; one end of the connecting wire extends to the first connecting portion, and the other end of the connecting wire extends to the second connecting portion.

[0014] In any of the above technical solutions, the number of connecting lines is multiple, and the multiple connecting lines are arranged at intervals; the number of first connecting parts is the same as the number of second connecting parts, and each first connecting part is connected to a second connecting part through a connecting line.

[0015] In any of the above technical solutions, the first connecting part has a hole structure, a conductive medium is disposed inside the first connecting part, and the first connecting part is connected to the phase line outlet end through the conductive medium.

[0016] The second connecting part has a hole structure, and the conductive medium is further disposed inside the second connecting part, and the conductive medium is connected to the conductive part.

[0017] In any of the above technical solutions, the stator plate further includes:

[0018] A first rigid body, wherein the first connecting end is located within the first rigid body;

[0019] A winding coil is disposed within the first rigid body, and the winding coil includes the phase wire output end; the first connecting part is connected to the phase wire output end within the first rigid body.

[0020] In any of the above technical solutions, the electronic control board further includes:

[0021] The second rigid body, wherein the second connecting end is located within the second rigid body;

[0022] A conductive layer is disposed within the second rigid body, and the conductive layer is provided with the conductive portion. The second connecting portion is connected to the conductive portion within the second rigid body.

[0023] In any of the above technical solutions, the connecting plate is further provided with a first connecting point and a second connecting point, the first connecting point being located on the side of one of the first connecting portions, the second connecting point being located on the side of one of the second connecting portions, and another connecting line being provided between the first connecting point and the second connecting point.

[0024] In any of the above technical solutions, the connecting plate, the stator plate, and the electrical control plate are further provided with protective layers.

[0025] This application also provides an axial motor, including the axial motor connection structure described in any of the above technical solutions, and thus has all the beneficial technical effects of the axial motor connection structure, which will not be repeated here.

[0026] Compared with the prior art, the beneficial effects of this application are as follows:

[0027] The axial motor connection structure provided in this application includes: a stator plate, the stator plate including a phase line output end; an electronic control plate, the electronic control plate including a conductive part; a connecting plate, the connecting plate being flexible; the connecting plate including a first connecting part and a second connecting part, the first connecting part being connected to the phase line output end, and the second connecting part being connected to the conductive part.

[0028] The axial motor connection structure provided in this application connects the stator board and the control board using a flexible connecting plate. Compared with the traditional wire welding method, this significantly reduces the number of solder joints, thereby effectively preventing solder joint vibration and breakage during the rotation of the high-frequency axial motor, extending its service life. Furthermore, the connecting plate can be bent freely to a certain extent, facilitating the adjustment of the relative position of the stator board and the control board, further reducing the risk of disconnection between the stator board and the control board. In addition, it can improve the integration of the axial motor, enabling the motor using this axial motor connection structure to achieve miniaturization.

[0029] The axial motor provided in this application includes the axial motor connection structure described above. Therefore, the axial motor connection structure significantly improves the structural integration, effectively reduces the size of the motor, meets the application requirements of high integration, high heat dissipation, and small size, and has a wide range of applications and strong practicality. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the axial motor connection structure provided in an embodiment of this application.

[0032] Figure label:

[0033] 1-A phase output terminal, 2-B phase output terminal, 3-C phase output terminal, 4-First connecting hole, 5-Second connecting hole, 6-Third connecting hole, 7-First connecting point, 8-First hole section, 9-Second hole section, 10-Third hole section, 11-Second connecting point, 12-Electrical control board, 13-Stator board, 14-Connecting board. Detailed Implementation

[0034] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0035] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0036] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] The following reference Figure 1 This application describes the axial motor connection structure and axial motor according to embodiments of the present application.

[0040] See Figure 1As shown, an embodiment of this application provides an axial motor connection structure, which includes a stator plate 13, an electronic control board 12, and a connecting plate 14. The stator plate 13 includes a phase wire output end, the electronic control board 12 includes a conductive part, and the connecting plate 14 is flexible and can be bent. The connecting plate 14 includes a first connecting part and a second connecting part. The first connecting part is connected to the phase wire output end, and the second connecting part is connected to the conductive part, thereby realizing the connection between the phase wire output end and the conductive part through the connecting plate 14, and thus realizing the connection between the stator plate 13 and the electronic control board 12.

[0041] Specifically, the connecting plate 14 is flexible and can be bent. The connecting plate 14 includes a flexible body and a connecting wire. The flexible body is insulating and waterproof. The flexible body includes a first connecting end and a second connecting end that are spaced apart. The first connecting part is disposed at the first connecting end, and the second connecting part is disposed at the second connecting end. The connecting wire is conductive. One end of the connecting wire extends to the first connecting part, so that the connecting wire is connected to the phase wire outlet at the first connecting part. The other end of the connecting wire extends to the second connecting part, so that the connecting wire is connected to the conductive part at the second connecting part, thereby realizing the electrical connection between the phase wire outlet and the conductive part, and thus realizing the electrical connection between the stator plate 13 and the electronic control board 12.

[0042] It should be noted that the connecting plate 14 in this embodiment can be an existing flexible circuit board, which includes at least an insulating film and a copper foil. The insulating film covers the copper foil, and the unwanted parts are removed by acid etching, so that the copper foil forms multiple spaced copper lines as conductive lines. Preferably, the multiple conductive lines are arranged in parallel and spaced apart.

[0043] Furthermore, the number of first connecting parts and the number of second connecting parts are the same and are arranged in a one-to-one correspondence. The number of conductive wires is not less than the number of first connecting parts, and a conductive wire is provided between each first connecting part and each second connecting part.

[0044] The number of first connecting parts is the same as the number of phase line output terminals and they are connected one-to-one. The number of second connecting parts is the same as the number of conductive parts and they are connected one-to-one. In this embodiment, the stator plate 13 has a three-phase coil with three phase line output terminals: phase A output terminal 1, phase B output terminal 2, and phase C output terminal 3. Correspondingly, there are three first connecting parts and three second connecting parts. The first connecting parts have a hole structure, and the three first connecting parts are a first connecting hole 4, a second connecting hole 5, and a third connecting hole 6. The first connecting hole 4 is used to connect to phase A output terminal 1, the second connecting hole 5 is used to connect to phase B output terminal 2, and the third connecting hole 6 is used to connect to phase C output terminal 3. The second connecting parts also have a hole structure, and the three second connecting parts are a first hole 8, a second hole 9, and a third hole 10. The first hole 8, the second hole 9, and the third hole 10 are connected to different conductive parts.

[0045] Furthermore, the connecting plate 14 also includes a first connecting point 7 and a second connecting point 11, which are arranged at intervals along the same straight line. The first connecting point 7 is located on the side of one of the first connecting portions, and the second connecting portion is located on the side of one of the second connecting portions. The first connecting point 7 and the second connecting point 11 are connected by another connecting line.

[0046] The control board 12 is provided with a spare conductor, and the second connection point 11 is connected to the spare conductor. The first connection point 7 and the second connection point 11 can be selected or not depending on the specific situation of the connection method of the stator board 13.

[0047] Furthermore, the stator plate 13 includes a first rigid body and a winding coil, with the winding coil disposed on the first rigid body and including the aforementioned phase wire output terminals. It should be noted that the stator plate 13 in this embodiment is specifically a common rigid PCB, specifically including a rigid insulating plate and a copper layer disposed within the insulating plate. The winding coil is obtained by etching the rigid PCB. In this embodiment, the winding coil is specifically a three-phase winding coil.

[0048] Preferably, the stator plate 13 further includes an extended conductive portion (not shown in the figure), and the three phase line outlets are respectively provided with extended conductive portions. Each extended conductive portion extends toward each of the first connection portions and the first connection point 7. Each extended conductive portion is used to connect with the connecting line, so that the lead-out direction of the phase line outlet can be any direction and can be connected to the connecting line through the extended conductive portion.

[0049] Furthermore, the control board 12 is specifically a common rigid PCB. The control board 12 includes a second rigid body and a conductive layer disposed within the second rigid body. The conductive layer is preferably a copper layer.

[0050] Furthermore, the connecting plate 14 and the stator plate 13 are integrated using existing mature rigid-flex manufacturing technology. During the manufacturing stage, the first connecting end is press-fitted into the first rigid body, so that each extended conductive part is connected to the first connecting part within the first rigid body. Correspondingly, the connecting plate 14 and the electrical control board 12 are also integrated using existing mature rigid-flex manufacturing technology. During the manufacturing stage, the second connecting end is press-fitted into the second rigid body, so that the second connecting part and the conductive part are connected within the second rigid body.

[0051] Furthermore, the first and second connecting portions are specifically disposed in the vias of the flexible circuit board. During the processing stage, the vias are plated with gold. After pressing with the stator board 13 and the control board 12, the first connecting portion is connected to the copper layer of the stator board 13, and the second connecting portion is connected to the copper layer of the control board 12, thereby realizing the connection between the stator board 13 and the control board 12. The same applies to the first connecting point 7 and the second connecting point 11, which will be fully understood by those skilled in the art.

[0052] In the manufacturing stage, this axial motor connection structure employs existing mature flexible board processing technology to process a flexible circuit board to obtain a connection plate 14. In addition to necessary etching steps, the fabrication of the connection plate 14 includes protective steps such as browning and applying a cover film to form a first protective layer on the outer surface of the connection plate 14. Similarly, existing mature rigid board processing technology is used to process a rigid circuit board to obtain a stator plate 13 and an electrical control board 12. The fabrication process also includes protective steps such as browning to form a second protective layer on the outer surface of the stator plate 13 and a third protective layer on the outer surface of the electrical control board 12. During the assembly of the connection plate 14 with the stator plate 13 and with the electrical control board 12 using a rigid-flex assemblies process, protective steps such as solder resist are included to form protective layers. This not only completes the connection and assembly of the connection plate 14, stator plate 13, and electrical control board 12 but also encapsulates the connection points, resulting in excellent sealing performance and broadening the applicability of this axial motor connection structure.

[0053] As can be seen, the axial motor connection structure provided in this application connects the stator plate 13 and the control board 12 through a flexible connecting plate 14. Compared with the traditional wire welding method, it significantly reduces the number of solder joints, thereby effectively avoiding the situation of solder joint vibration and breakage during the rotation of the high-frequency axial motor, extending the service life. In addition, the connecting plate 14 can be bent at will to a certain extent, which makes it easy to adjust the relative position of the stator plate 13 and the control board 12, further reducing the risk of disconnection between the stator plate 13 and the control board 12. Furthermore, it can improve the integration of the axial motor and realize the transformation of the motor volume using this axial motor connection structure towards miniaturization.

[0054] Furthermore, the axial motor connection structure provided in this application embeds and hides the connection position, providing good sealing and waterproofing. It can meet the special requirements of applications such as motors that need to be immersed in liquid for a long time to maintain low temperature. For example, in the case of liquid-cooled electric drive motor stators in new energy vehicles, which need to be immersed in coolant for a long time, this axial motor connection structure can reduce the risk of wire insulation aging and sealing failure caused by long-term immersion in liquid.

[0055] The embodiments of this application also provide an axial motor, including the axial motor connection structure described in any of the above embodiments, and thus have all the beneficial technical effects of the axial motor connection structure, which will not be repeated here.

[0056] This axial motor also includes a housing, permanent magnets, and other necessary structures that constitute the axial motor. The permanent magnets and stator plate 13 are both housed inside the housing.

[0057] This axial motor, through the aforementioned axial motor connection structure, significantly improves structural integration, effectively reduces motor size, meets the application requirements of high integration, high heat dissipation, and small size, and has a wide range of applications and strong practicality.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An axial motor connection structure, characterized by, include: Stator plate, the stator plate including phase line output terminals; The electronic control board includes a conductive portion; A connecting plate, the connecting plate being flexible; the connecting plate includes a first connecting part and a second connecting part, the first connecting part being connected to the phase line outlet end, and the second connecting part being connected to the conductive part.

2. The axial motor connection structure of claim 1, wherein The number of phase wire outlets is adapted to the number of conductive parts; The number of the first connecting parts is not less than the number of the phase line outlets, and each phase line outlet is provided with one first connecting part; the number of the second connecting parts is not less than the number of the conductive parts, and each conductive part is provided with one second connecting part.

3. The axial motor connection structure of claim 1, wherein The connecting plate includes: A flexible body, the flexible body including a first connecting end and a second connecting end spaced apart, the first connecting part being disposed at the first connecting end, and the second connecting part being disposed at the second connecting end; A connecting wire is disposed within the flexible body and is conductive; one end of the connecting wire extends to the first connecting portion, and the other end of the connecting wire extends to the second connecting portion.

4. The axial motor connection structure of claim 3, wherein The number of connecting lines is multiple, and the multiple connecting lines are arranged at intervals; the number of first connecting parts is the same as the number of second connecting parts, and each first connecting part is connected to a second connecting part through a connecting line.

5. The axial motor connection structure of claim 1, wherein The first connecting part has a hole structure, and a conductive medium is disposed inside the first connecting part. The first connecting part is connected to the phase line outlet end through the conductive medium. The second connecting part has a hole structure, and the conductive medium is further disposed inside the second connecting part, and the conductive medium is connected to the conductive part.

6. The axial motor connection structure of claim 3, wherein The stator plate includes: A first rigid body, wherein the first connecting end is located within the first rigid body; A winding coil is disposed within the first rigid body, and the winding coil includes the phase wire output end; the first connecting part is connected to the phase wire output end within the first rigid body.

7. The axial motor connection structure of claim 3, wherein The electronic control board includes: The second rigid body, wherein the second connecting end is located within the second rigid body; A conductive layer is disposed within the second rigid body, and the conductive layer is provided with the conductive portion. The second connecting portion is connected to the conductive portion within the second rigid body.

8. The axial motor connection structure of claim 3, wherein The connecting plate is further provided with a first connecting point and a second connecting point. The first connecting point is located on the side of one of the first connecting parts, and the second connecting point is located on the side of one of the second connecting parts. Another connecting line is provided between the first connecting point and the second connecting point.

9. The axial motor connection structure according to any one of claims 1 to 8, characterized by The connecting plate, the stator plate, and the electrical control plate are each provided with a protective layer.

10. An axial motor, characterized by The axial motor connection structure includes any one of claims 1 to 9.

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