Stator coil potting method, stator coil potting device and motor

Abstract

The invention provides a stator coil potting method, a stator coil potting device and a motor, and relates to the technical field of motors. The stator coil potting method comprises the following steps: a first assembling step: assembling a stator coil on a pre-fixing tool so that a plurality of winding units are respectively sleeved in a plurality of mounting blocks, and parts of the winding units are located in a first potting space; a first potting step: injecting potting liquid into the first potting space, and forming a pre-fixed coil after the potting liquid is cured; a first separation step: separating the pre-fixed coil from the pre-fixed tool; a second assembling step: connecting the pre-fixed coil with the filling and sealing tool so as to enable the pre-fixed coil to be located in the second filling and sealing space; a second potting step: injecting potting liquid into the second potting space, and forming a potting body after the potting liquid is cured; and a second separation step: separating the potting body from the potting tool. The potting body formed by the method does not contain silicon steel sheets, so that the influence of the silicon steel sheets on the rotation precision of the motor can be avoided.

Description

Technical Field

[0001] This application relates to the field of motor technology, and in particular to a stator coil potting method, a stator coil potting device, and a motor. Background Technology

[0002] With the continuous advancement and development of motor technology, users have placed higher demands on the stability and reliability of motor performance. As one of the core components of a motor, the stator coil's insulation performance and heat dissipation directly affect the overall operating efficiency and lifespan of the motor. Stator coil potting offers several advantages: it improves the motor's withstand voltage and insulation strength, prevents current leakage, and provides leakage protection. Furthermore, potting prevents moisture and impurities from entering the motor, extending its service life. The potting material is thermally conductive, transferring heat from the motor's interior to the outer casing, reducing heat generation. It also maintains good heat and oil resistance, enhancing the overall mechanical strength after potting and meeting the motor's mechanical requirements. Additionally, potting fills internal gaps and cracks, reducing internal vibration and noise, improving the motor's smooth operation, and enhancing its moisture and corrosion resistance, making it suitable for various working environments. Moreover, potting allows for mass production, improving production efficiency. Therefore, potting stator coils is essential.

[0003] Stator coil potting typically requires the use of potting fixtures. To ensure the stability of the stator coil within the potting fixture, silicon steel sheets are placed inside the stator coil to achieve relative fixation between the stator coil and the potting fixture. However, after potting, the silicon steel sheets remain inside the potting body. When a motor with a potting body is running at high speed, the silicon steel sheets may affect the accuracy of the motor's rotation. Summary of the Invention

[0004] In view of this, this application provides a stator coil potting method, a stator coil potting device, and a motor to solve the problem that when a motor with a potting body is running at high speed, the silicon steel sheet may affect the accuracy of the motor rotation.

[0005] According to a first aspect of this application, a stator coil potting method is provided, wherein the stator coil potting method pots the stator coil using a stator coil potting device, and the stator coil includes a plurality of winding units; The stator coil potting device includes a pre-fixing fixture and a potting fixture. The pre-fixing fixture includes a fixing body and multiple mounting blocks. The fixing body forms a first potting space, and the multiple mounting blocks are all disposed on the fixing body. The potting fixture forms a second potting space. The stator coil potting method includes: The first assembly step involves assembling the stator coil onto a pre-fixed fixture, so that the multiple winding units are respectively fitted into the multiple mounting blocks, with a portion of the winding unit located within the first potting space. The first potting step involves injecting potting liquid into the first potting space, and forming a pre-fixed coil after the potting liquid has solidified. The first separation step involves separating the pre-fixed coil from the pre-fixed fixture. The second assembly step involves connecting the pre-fixed coil to the potting fixture so that the pre-fixed coil is located within the second potting space. The second potting step involves injecting potting liquid into the second potting space, where the potting liquid solidifies to form a potting body. The second separation step involves separating the potting compound from the potting fixture.

[0006] Preferably, the fixing body includes a first fixing member, a second fixing member, and a connecting member. The first fixing member and the second fixing member are both connected to the connecting member. The second fixing member has an installation cavity. The first fixing member is disposed in the installation cavity. The outer wall of the first fixing member and the cavity wall of the installation cavity enclose the first potting space. The plurality of mounting blocks are fixed on the first fixing member.

[0007] Preferably, a portion of the first fixing member protrudes relative to the second fixing member in a direction away from the connector, a groove is formed on the portion of the second fixing member that protrudes relative to the first fixing member, a portion of the mounting block is located in the groove, and another portion of the mounting block protrudes relative to the first fixing member toward the second fixing member.

[0008] Preferably, the pre-fixing fixture further includes a first fastener, the fixing body has a mounting hole, the first fastener is disposed in the mounting hole, and a portion of the first fastener extends into the first potting space; The first separation step includes: Separate the first fastener from the fixing body so that the pre-fixed coil forms a positioning hole; Separate the fixing body from the pre-fixed coil.

[0009] Preferably, the potting fixture includes a potting body and a connector, wherein the potting body encloses the second potting space; The second assembly step includes: Assembly step: Assemble the potting body to form the second potting space; The first installation step involves connecting the pre-fixed coil to the connector using a second fastener. The second installation step involves placing the pre-fixed coil within the second potting space and connecting the connector to the potting body.

[0010] Preferably, the potting body includes a first limiting member, a second limiting member, and a base plate, wherein the base plate has a through hole; Assembly steps include: Place the pre-embedded nut on the base plate, pass the third fastener through the through hole, and thread it to the pre-embedded nut; Both the first limiting member and the second limiting member are fixed on the base plate so that the pre-embedded nut is located between the first limiting member and the second limiting member, and the outer side wall of the first limiting member and the inner side wall of the second limiting member enclose the second potting space.

[0011] Preferably, the second separation step includes: Remove the second fastener to separate the connector from the potting compound; Separate the first limiting member and the second limiting member from the base plate; Remove the third fastener and separate the base plate from the potting body, leaving the pre-embedded nut inside the potting body.

[0012] Preferably, the step of forming a potting compound after the potting fluid cures includes: The potting fixture is placed in a compressor and vacuumed. The vacuum-sealed potting fixture is placed on a heating table and heated for a predetermined time.

[0013] According to a second aspect of this application, a stator coil potting apparatus is provided, which pots the stator coil using the stator coil potting method described above.

[0014] According to a third aspect of this application, an electric motor is provided, the electric motor comprising the potting body processed by the above-described stator coil potting method.

[0015] When using the stator coil potting method of this application to pot the stator coil, after completing the first assembly step, multiple winding units are respectively fitted into multiple mounting blocks. These mounting blocks can fix the multiple winding units, ensuring the relative fixation of the stator coil and the pre-fixed fixture. A pre-fixed coil is formed after the first potting step. Then, a first separation step and a second assembly step are performed. During the second assembly step, the pre-fixed coil can be connected to the potting fixture, thereby fixing the pre-fixed coil and ensuring its relative fixation with the potting fixture. Thus, by fixing the stator coil and the pre-fixed coil using the pre-fixed fixture and the potting fixture, there is no need to use silicon steel sheets for fixation. The resulting potted body does not contain silicon steel sheets, which avoids the impact of silicon steel sheets on the rotational accuracy of the motor during high-speed operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional structural diagram of the pre-fixed fixture is shown; Figure 2 An exploded view of the pre-fixed fixture is shown; Figure 3 A schematic diagram of the planar structure of the pre-fixed fixture is shown; Figure 4 Show along Figure 3 A cross-sectional view obtained by cutting the pre-fixed fixture along A-A'; Figure 5 A three-dimensional structural diagram of the potting fixture is shown; Figure 6 A schematic diagram of the planar structure of the potting fixture is shown; Figure 7 Show Figure 6 A cross-sectional view obtained by cutting the potting fixture along B-B'; Figure 8 A flowchart illustrating the stator coil potting method is shown.

[0018] Icons: 1-Pre-fixed fixture; 11-Fixing body; 111-First fixing component; 1111-Groove; 112-Second fixing component; 113-Connector; 12-Mounting block; 13-Mounting hole; 14-First potting space; 2-Potting fixture; 21-Potting body; 211-First limiting component; 212-Second limiting component; 213-Base plate; 214-Through hole; 215-Wire threading port; 22-Connector; 23-Cover plate; 24-Embedded nut; 25-Second potting space. Detailed Implementation

[0019] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0020] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0021] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0022] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0023] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0024] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0025] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0026] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0027] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0028] According to a first aspect of this application, a stator coil potting method is provided. The stator coil potting method pots the stator coil using a stator coil potting device. The stator coil includes multiple winding units. The stator coil potting device includes a pre-fixing fixture 1 and a potting fixture 2. The pre-fixing fixture 1 includes a fixing body 11 and multiple mounting blocks 12. The fixing body 11 forms a first potting space 14, and the multiple mounting blocks 12 are all disposed on the fixing body 11. The potting fixture 2 forms a second potting space 25.

[0029] When assembling the stator coils, the pre-fixed fixture 1 is in the assembled state, such as... Figures 1 to 4 As shown, the fixing body 11 includes a first fixing member 111, a second fixing member 112, and a connecting member 113. The first fixing member 111 and the second fixing member 112 are both hollow cylindrical structures, and the connecting member 113 can be an annular structure. The inner diameter of the second fixing member 112 is larger than the outer diameter of the first fixing member 111. The first fixing member 111 and the second fixing member 112 can be connected to the connecting member 113 by bolts. The second fixing member 112 has a mounting cavity, and the first fixing member 111 is disposed in the mounting cavity. The outer wall of the first fixing member 111 and the cavity wall of the mounting cavity enclose a first potting space 14. Multiple mounting blocks 12 are fixed on the first fixing member 111.

[0030] Furthermore, such as Figure 2 and Figure 4 As shown, a portion of the first fixing member 111 protrudes relative to the second fixing member 112 in a direction away from the connector 113 (i.e., a portion of the first fixing member 111 protrudes upward relative to the second fixing member 112). A groove 1111 is formed on the protruding portion of the second fixing member 112 relative to the first fixing member 111. A portion of the mounting block 12 is located within the groove 1111, and another portion of the mounting block 12 protrudes relative to the first fixing member 111 towards the second fixing member 112. Thus, when the stator coil is mounted on the pre-fixed fixture 1, the winding unit can be sleeved on the mounting block 12, and a portion of the winding unit is located within the first potting space 14. Since the upper end of the first potting space 14 is open, potting fluid can be directly injected into the first potting space 14.

[0031] Optionally, a plurality of grooves 1111 are formed on the first fixing member 111, and the mounting block 12 is disposed in the grooves 1111. The mounting block 12 is fixed to the first fixing member 111 by bolts.

[0032] In addition, the pre-fixed fixture 1 also includes a first fastener ( Figures 1 to 4 (not shown in the image), such as Figure 3 As shown, the fixing body 11 has a mounting hole 13, the first fastener is disposed in the mounting hole 13, and a portion of the first fastener extends into the first potting space 14.

[0033] Furthermore, such as Figure 5 , Figure 6 and Figure 7 As shown, the potting fixture 2 includes a potting body 21 and a connector 22. The potting body 21 encloses a second potting space 25. During pre-fixed coil installation, the pre-fixed coil can be first installed with the connector 22, then placed in the second potting space 25, and the connector 22 is connected to the potting body 21, thereby achieving the installation of the pre-fixed coil. Optionally, the connector 22 has a connecting hole that can mate with a bolt, thereby connecting the pre-fixed coil to the connector 22.

[0034] Furthermore, such as Figure 7 As shown, the potting body 21 includes a first limiting member 211, a second limiting member 212, and a base plate 213. The base plate 213 has a through hole 214. Both the first limiting member 211 and the second limiting member 212 can be fixed to the base plate 213 with bolts, so that the outer side wall of the first limiting member 211 and the inner side wall of the second limiting member 212 enclose a second potting space 25. A pre-embedded nut 24 can be installed on the base plate 213 with a third fastener so that the pre-embedded nut 24 is located within the second potting space 25. An injection port is provided on the base plate 213 to facilitate the injection of potting fluid into the second potting space 25.

[0035] Optionally, the second limiting member 212 also has a threading port 215.

[0036] In addition, the potting fixture 2 also includes a cover plate 23, which can be fixed to the second limiting member 212 by bolts.

[0037] like Figure 8 As shown, the stator coil potting method includes: S1. First assembly step: The stator coil is assembled on the pre-fixed fixture 1 so that multiple winding units are respectively fitted into multiple mounting blocks 12, and part of the winding unit is located in the first potting space 14. S2, First potting step: Inject potting liquid into the first potting space 14 to form a pre-fixed coil after the potting liquid solidifies; S3, First separation step: Separate the pre-fixed coil from the pre-fixed fixture 1; S4. Second assembly step: Connect the pre-fixed coil to the potting fixture 2 so that the pre-fixed coil is located in the second potting space 25. S5. Second potting step: Inject potting liquid into the second potting space 25. After the potting liquid solidifies, a potting body is formed. S6. Second separation step: Separate the potting body from the potting fixture 2.

[0038] When using the stator coil potting method of this application to pot the stator coil, after completing the first assembly step, multiple winding units are respectively fitted into multiple mounting blocks 12. The multiple mounting blocks 12 can fix the multiple winding units to ensure the relative fixation of the stator coil and the pre-fixed fixture 1, forming a pre-fixed coil after the first potting step. Then, a first separation step and a second assembly step are performed. During the second assembly step, the pre-fixed coil can be connected to the potting fixture 2 to fix the pre-fixed coil, ensuring the relative fixation of the pre-fixed coil and the potting fixture 2. Thus, by fixing the stator coil and the pre-fixed coil through the pre-fixed fixture 1 and the potting fixture 2, there is no need to use silicon steel sheets for fixation. The potted body formed does not contain silicon steel sheets, which avoids the impact of silicon steel sheets on the rotational accuracy of the motor when the motor with the potted body is running at high speed.

[0039] Before the first assembly step S1, the pre-fixed fixture 1 is in the assembled state. During the first assembly step S1, the first fastener is installed on the connector 113, the winding unit is sleeved on the mounting block 12, and part of the winding unit is located in the first potting space 14, with the bottom of each winding unit in contact with the connector 113.

[0040] Furthermore, in the first assembly step S1, after the stator coil is installed, nylon thread can be wrapped around the stator coil multiple times and knotted to fix the stator coil. At the same time, using nylon thread can improve the structural strength of the pre-fixed coil.

[0041] In the first potting step S2, potting fluid can be injected from above the first potting space 14, at which point the portion of the first fastener is located in the middle of the potting fluid. After potting is completed, the pre-fixed coil can be placed on a heating table and heated for a period of time to allow the potting fluid to solidify, thereby forming the pre-fixed coil.

[0042] Optionally, the heating time on the heating plate can be selected according to needs, for example, it can be heated for 15 minutes.

[0043] Furthermore, the first separation step S3 includes: S31. Separate the first fastener from the fixing body 11 so that the pre-fixed coil forms a positioning hole; Preferably, the first fastener is a screw, and the first fastener is threadedly connected to the connector 113. In this case, the first fastener can be removed simply by turning the screw, and a positioning hole is formed at the location of the pre-fixed coil. The hole wall of the positioning hole has threads.

[0044] S32. Separate the fixed body 11 from the pre-fixed coil.

[0045] In step S32, the bolts used to connect the first fixing member 111 with the mounting block 12, the first fixing member 111 with the connecting member 113, and the second fixing member 112 with the connecting member 113 can be removed, thereby separating the first fixing member 111, the second fixing member 112, the connecting member 113, and the mounting block 12 from the pre-fixed coil.

[0046] After completing the first separation step S3, the pre-fixed coil has been separated from the pre-fixed fixture 1. Before proceeding to the second assembly step S4, all parts of the potting fixture 2 are in a disassembled state.

[0047] In an embodiment of this application, the second assembly step S4 includes: S41. Assembly step: Assemble the potting body 21 to form the second potting space 25; Optionally, assembly step S41 includes: S411. Place the embedded nut 24 on the base plate 213, pass the third fastener through the through hole 214, and thread it to the embedded nut 24. Optionally, the third fastener is a bolt, and the embedded nut 24 can be a knurled nut. When the potting body is manufactured, the embedded nut 24 is located inside the potting body and can be used to mate with the bolt to install the potting body in the motor. The number and installation position of the embedded nuts 24 can be based on the installation requirements of the potting body.

[0048] In addition, after the pre-embedded nuts 24 are installed, several turns of nylon thread can be wrapped around multiple pre-embedded nuts 24 and then tied in a knot to improve the structural strength of the potting compound.

[0049] S412. Fix both the first limiting member 211 and the second limiting member 212 on the base plate 213 so that the pre-embedded nut 24 is located between the first limiting member 211 and the second limiting member 212, and the outer side wall of the first limiting member 211 and the inner side wall of the second limiting member 212 enclose the second potting space 25.

[0050] In step S412, the first limiting member 211 and the second limiting member 212 can be fixed to the base plate 213 by bolts.

[0051] Furthermore, the second assembly step S4 also includes: a first installation step S42, in which the pre-fixed coil is connected to the connector 22 by a second fastener; Optionally, the second fastener can be a bolt, which is passed through the connecting hole and connected to the positioning hole on the pre-fixed coil, thereby realizing the connection between the pre-fixed coil and the connector 22.

[0052] S43. Second installation step: Place the pre-fixed coil in the second potting space 25 and connect the connector 22 to the potting body 21.

[0053] In the second installation step S43, the connector 22 and the potting body 21 can be connected by bolts. In addition, after the connector 22 is installed, the cover plate 23 can be fixed to the second limiting member 212 by bolts, so that the cover plate 23 contacts the upper surface of the connector 22.

[0054] After completing the second installation step S43, the wire hole 215 needs to be sealed with a structure such as a rubber block before proceeding to the second potting step S5.

[0055] Optionally, the second potting step S5 includes: S51. Inject potting fluid into the second potting space 25 through the injection port of the base plate 213; After completing step S51, the injection port needs to be sealed with a screw.

[0056] S52. Place the potting fixture 2 into the compressor and evacuate it. In step S52, vacuuming is performed using a compressor to reduce air bubbles in the potting compound.

[0057] S53. Place the vacuum-sealed potting fixture 2 on the heating table and heat for a predetermined time.

[0058] Optionally, the reservation time can be 30 minutes.

[0059] After step S53 is completed, the second separation step S6 is performed, which includes: S61. Remove the second fastener to separate the connector 22 from the potting body; S62. Separate the first limiting member 211 and the second limiting member 212 from the base plate 213; S63. Remove the third fastener and separate the base plate 213 from the potting body, leaving the pre-embedded nut 24 inside the potting body.

[0060] Thus, after completing step S63, the processing of the potting compound is complete.

[0061] Alternatively, the potting fluid can be a mixture of epoxy resin and catalyst, or a liquid used when potting existing stator coils.

[0062] Furthermore, the stator coil potting method of this application involves two potting processes, and any problems discovered after the first potting step S2 can be adjusted in a timely manner.

[0063] According to a second aspect of this application, a stator coil potting apparatus is provided, which pots a stator coil using the aforementioned stator coil potting method. The stator coil potting apparatus includes a pre-fixing fixture 1 and a potting fixture 2. The structures of the pre-fixing fixture 1 and the potting fixture 2 have been described above and will not be repeated here.

[0064] According to a third aspect of this application, an electric motor is provided, which includes the aforementioned potting body. The motor does not require silicon steel sheets for fixing the coil, thus avoiding the impact of silicon steel sheets on the rotational accuracy of the motor during high-speed operation.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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; and these 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 the present invention.

Claims

1. A method for potting stator coils, characterized in that, The stator coil potting method uses a stator coil potting device to pot the stator coil, which includes multiple winding units; The stator coil potting device includes a pre-fixing fixture and a potting fixture. The pre-fixing fixture includes a fixing body and multiple mounting blocks. The fixing body forms a first potting space, and the multiple mounting blocks are all disposed on the fixing body. The potting fixture forms a second potting space. The stator coil potting method includes: The first assembly step involves assembling the stator coil onto a pre-fixed fixture, so that the multiple winding units are respectively fitted into the multiple mounting blocks, with a portion of the winding unit located within the first potting space. The first potting step involves injecting potting liquid into the first potting space, and forming a pre-fixed coil after the potting liquid has solidified. The first separation step involves separating the pre-fixed coil from the pre-fixed fixture. The second assembly step involves connecting the pre-fixed coil to the potting fixture so that the pre-fixed coil is located within the second potting space. The second potting step involves injecting potting liquid into the second potting space, where the potting liquid solidifies to form a potting body. The second separation step involves separating the potting compound from the potting fixture.

2. The stator coil potting method according to claim 1, characterized in that, The fixing body includes a first fixing member, a second fixing member, and a connecting member. The first fixing member and the second fixing member are both connected to the connecting member. The second fixing member has an installation cavity. The first fixing member is disposed in the installation cavity. The outer wall of the first fixing member and the cavity wall of the installation cavity enclose the first potting space. The plurality of mounting blocks are fixed on the first fixing member.

3. The stator coil potting method according to claim 2, characterized in that, A portion of the first fixing member protrudes relative to the second fixing member in a direction away from the connector. A groove is formed on the portion of the second fixing member that protrudes relative to the first fixing member. A portion of the mounting block is located in the groove, and another portion of the mounting block protrudes relative to the first fixing member towards the second fixing member.

4. The stator coil potting method according to any one of claims 1-3, characterized in that, The pre-fixing fixture further includes a first fastener. The fixing body has an installation hole, the first fastener is disposed in the installation hole, and a portion of the first fastener extends into the first potting space. The first separation step includes: Separate the first fastener from the fixing body so that the pre-fixed coil forms a positioning hole; Separate the fixing body from the pre-fixed coil.

5. The stator coil potting method according to claim 4, characterized in that, The potting fixture includes a potting body and a connecting component, wherein the potting body encloses the second potting space; The second assembly step includes: Assembly step: Assemble the potting body to form the second potting space; The first installation step involves connecting the pre-fixed coil to the connector using a second fastener. The second installation step involves placing the pre-fixed coil within the second potting space and connecting the connector to the potting body.

6. The stator coil potting method according to claim 5, characterized in that, The potting body includes a first limiting member, a second limiting member, and a base plate, wherein the base plate has a through hole; Assembly steps include: Place the pre-embedded nut on the base plate, pass the third fastener through the through hole, and thread it to the pre-embedded nut; Both the first limiting member and the second limiting member are fixed on the base plate so that the pre-embedded nut is located between the first limiting member and the second limiting member, and the outer side wall of the first limiting member and the inner side wall of the second limiting member enclose the second potting space.

7. The stator coil potting method according to claim 6, characterized in that, The second separation step includes: Remove the second fastener to separate the connector from the potting compound; Separate the first limiting member and the second limiting member from the base plate; Remove the third fastener and separate the base plate from the potting body, leaving the pre-embedded nut inside the potting body.

8. The stator coil potting method according to claim 1, characterized in that, The steps involved in forming a potting compound after the potting fluid cures include: The potting fixture is placed in a compressor and vacuumed. The vacuum-sealed potting fixture is placed on a heating table and heated for a predetermined time.

9. A stator coil potting device, characterized in that, The stator coil potting device pots the stator coil using the stator coil potting method according to any one of claims 1-8.

10. An electric motor, characterized in that, The motor includes the potting body manufactured by the stator coil potting method according to any one of claims 1-8.

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