Stator assembly, electric machine, compressor and refrigeration appliance

Abstract

This invention proposes a stator assembly, a motor, a compressor, and a refrigeration device. The stator assembly includes a stator body, an insulating component, and terminals. The stator body has multiple coil groups, at least some of which have at least two connection ends. The insulating component is disposed on the stator body and has at least one wiring groove. The terminal has at least one wire groove and a guide groove located at the front end of the wire groove. The terminal is inserted into the wiring groove, and at least one connection end is accommodated in the wire groove. The wire diameter of the connection end is defined as D, the width of the wire groove is γ, and the length of the wire groove is Y, such that 3πD 2 The value of / 8Yγ is not less than 0.278 and not greater than 15.312. The technical solution of this application can ensure sufficient contact between the terminal and the connection end, ensure that the contact resistance is within a reasonable range, and improve the connection reliability.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and in particular to a stator assembly, motor, compressor, and refrigeration equipment. Background Technology

[0002] DC inverter compressors use piercing terminals. If the terminals do not pierce the stator winding connection end sufficiently or not at all, the terminal and connection end will not make sufficient or no contact, resulting in increased terminal contact resistance. This leads to increased heat generation during terminal operation, making the terminal prone to failure and ultimately causing the motor to burn out. Summary of the Invention

[0003] The main objective of this invention is to provide a stator assembly, motor, compressor, and refrigeration equipment that ensures sufficient contact between terminals and connection ends, ensures contact resistance within a reasonable range, and improves connection reliability.

[0004] To achieve the above objectives, the present invention provides a stator assembly comprising:

[0005] The stator body is provided with multiple coil groups, and at least some of the coil groups have at least two connection terminals;

[0006] An insulating component, wherein the insulating component is disposed on the stator body, and at least one wiring groove is formed on the insulating component; and

[0007] The terminal has at least one wire groove and a guide groove located at the front end of the wire groove. The terminal is inserted into the wire groove, and at least one of the connecting ends is accommodated in the wire groove.

[0008] Define the diameter of the connecting wire as D, the width of the groove as γ, and the length of the groove as Y, such that 3πD 2 The value of / 8Yγ is not less than 0.278 and not greater than 15.312.

[0009] In one embodiment of this application, a limiting post protrudes from the bottom of the wiring groove, and the connecting end is located at the top of the limiting post.

[0010] In one embodiment of this application, the width of the limiting post is smaller than the width of the groove;

[0011] And / or, the top of the limiting post is located between the groove and the guide groove.

[0012] In one embodiment of this application, the total length of the wire groove and the guide groove is defined as L1, the height of the limiting post is L2, the distance between the bottom of the terminal and the bottom of the wiring groove is L3, and the value of L2 / L3-L1 is not less than 0.06 and not more than 12.61.

[0013] In one embodiment of this application, the stator body includes three coil groups, and three terminals are provided, with each terminal being crimped to the connection end of the same coil group.

[0014] In one embodiment of this application, the stator assembly further includes:

[0015] Junction box, the junction box cover covering the three terminals and connected to the insulating component; and

[0016] The system includes three lead wires, which are inserted into the same junction box and electrically connected to a terminal respectively.

[0017] In one embodiment of this application, the lead wire includes a wire body and a plug disposed at the end of the wire body. The plug is disposed at an angle to the wire body. The plug is inserted into the junction box and the terminal and is electrically connected to the terminal.

[0018] And / or, the ends of the three leads furthest from the junction box are connected to the same lead connector.

[0019] In one embodiment of this application, the stator assembly further includes a frame disposed on the side wall of the stator body. The surface of the frame facing away from the stator body is provided with a plurality of wiring channels. The plurality of wiring channels are spaced apart along the height direction of the stator core, and the electromagnetic wire of each coil group is disposed in one of the wiring channels.

[0020] In one embodiment of this application, at least one limiting protrusion is provided between two adjacent wiring channels.

[0021] This application also proposes an electric motor, including a rotor and a stator assembly as described in any of the preceding claims, the stator assembly comprising:

[0022] The stator body is provided with multiple coil groups, and at least some of the coil groups have at least two connection terminals;

[0023] An insulating component, wherein the insulating component is disposed on the stator body, and at least one wiring groove is formed on the insulating component; and

[0024] The terminal has at least one wire groove and a guide groove located at the front end of the wire groove. The terminal is inserted into the wire groove, and at least one of the connecting ends is accommodated in the wire groove.

[0025] Define the diameter of the connecting wire as D, the width of the groove as γ, and the length of the groove as Y, such that 3πD 2 The value of / 8Yγ is not less than 0.278 and not greater than 15.312.

[0026] This application also proposes a compressor including the motor as described above.

[0027] This application also proposes a refrigeration device, including the compressor as described above.

[0028] The technical solution of this invention defines the relationship between the crimping height of the terminal when it is crimped into the wiring groove of the insulating component and the various dimensions of the terminal and the connection end, satisfying 3πD. 2 The value of / 8Yγ is not less than 0.278 and not greater than 15.312. This setting ensures that the terminal fully penetrates the connection end and that the terminal is always clamped to the connection end, so that the stress between the terminal and the connection end is in the optimal state, ensuring sufficient contact between the terminal and the connection end, and keeping the contact resistance between the terminal and the connection end within a reasonable range, thereby improving the reliability of the stator assembly during use. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 This is a structural diagram of an embodiment of the compressor of the present invention;

[0031] Figure 2 This is a top view of the connection structure between the stator body, insulating components, and frame of the present invention;

[0032] Figure 3 A structural diagram showing the fixed connection ends of terminals and insulating components in a stator assembly;

[0033] Figure 4 This is a structural diagram showing a single connection end fixed in a stator assembly.

[0034] Figure 5 A cross-sectional view showing the mating of insulating components and connecting ends;

[0035] Figure 6 This is a structural diagram of the leads in the stator assembly;

[0036] Figure 7 This is a structural diagram showing the connection between the lead wires and the junction box in the stator assembly;

[0037] Figure 8 This is a structural diagram of the skeleton in the stator assembly;

[0038] Figure 9The diagram illustrates the electrical and mechanical performance of an embodiment of the stator assembly of the present invention.

[0039] Explanation of icon numbers:

[0040] label name label name 1 compressor 142 Guide groove 100 motor 143 Connector 10 stator assembly 15 Junction Box 11 stator body 16 Lead wire 111 stator core 161 Line body 112 Connection end 162 Insert 13 Insulating components 163 Lead wire connector 131 Wiring trough 17 skeleton 132 Limiting post 171 Cable routing channel 14 terminal 172 Limiting protrusion 141 cable tray 20 rotor

[0041] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0043] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0046] The present invention proposes a stator assembly 10.

[0047] Please refer to Figures 2 to 5In some embodiments of the stator assembly 10 of this application, the stator assembly 10 includes:

[0048] The stator body 11 is provided with a plurality of coil groups, at least some of which have at least two connection terminals 112;

[0049] Insulating component 13, the insulating component 13 being disposed on the stator body 11, the insulating component 13 having at least one wiring groove 131; and

[0050] Terminal 14, wherein the terminal 14 has at least one wire groove 141 and a guide groove 142 located at the front end of the wire groove 141, the terminal 14 is inserted into the wiring groove 131, and at least one of the connecting ends 112 is accommodated in the wire groove 141;

[0051] Define the wire diameter of the connecting end 112 as D, the width of the wire groove 141 as γ, and the length of the wire groove 141 as Y, such that 3πD 2 The value of / 8Yγ is not less than 0.278 and not greater than 15.312.

[0052] The stator assembly 10 proposed in this application is applied in a motor 100. The stator assembly 10 includes a stator body 11, which includes a stator core 111 and a stator winding. The stator core 111 has a plurality of stator teeth spaced apart along its circumference, and two adjacent stator teeth define a slot of the stator assembly 10. The stator winding is wound on the stator teeth and includes a plurality of coil groups. Each coil group has at least two connection terminals 112. It is understood that each coil group has a plurality of coils, and one or more coils in each coil group can be connected in series. When all the coils in a coil group are connected in series, the coil group has two connection terminals 112. When the coils in a coil group are not all connected in series, the number of connection terminals 112 in the coil group will be greater than two.

[0053] In this embodiment, an insulating component 13 is provided on the stator core 111. The insulating component 13 is provided with a plurality of wiring slots 131, such that each connection end 112 is disposed in a wiring slot 131. At the same time, a plurality of terminals 14 are provided. The terminals 14 can be inserted into the wiring slots 131 to pierce the insulating outer layer of the connection end 112. Lead wires 16 can be connected to the terminals 14 for connecting to external circuits, thereby making the external circuits electrically connected to the connection end 112. Specifically, the terminals 14 are provided with connected guide slots 142 and wire slots 141. The guide slots 142 are generally flared to guide the connection end 112 into the wire slot 141 when the terminal 14 is inserted into the wiring slot 131, so that the connection end 112 can be pierced by the side wall of the wire slot 141 and thus conduct to the terminal 14.

[0054] Furthermore, in this embodiment, the wire diameter of the connection end 112 is defined as D, the width of the wire groove 141 is γ, the length of the wire groove 141 is Y, and D > γ. At this time, by converting the crimping height of the terminal 14, 3πD is made possible. 2 / 8Yγ satisfies 3πD 2 The value of / 8Yγ is not less than 0.278 and not greater than 15.312, thereby ensuring that the connecting end 112 can enter the groove 141 and be fully penetrated by the groove wall of the straight section, so that the connecting end 112 and the terminal 14 maintain sufficient contact, reducing the contact resistance between the terminal 14 and the connecting end 112, reducing the heat generated during the operation of the motor 100, reducing the risk of damage to the stator assembly 10 and the motor 100, and improving the reliability of use. Furthermore, it allows the connecting end 112 to be clamped in the straight section, increasing the connection strength between the connecting end 112 and the terminal 14, and improving the overall structural stability.

[0055] Reference Figure 9 visible, Figure 9 The diagram illustrates the electrical and mechanical performance of terminal 14 in stator assembly 10 when it is pressed into the wiring groove 131 of insulating component 13, and the relationship between the dimensions of terminal 14 and connection end 112. The diagram shows the effects of the formula on terminal 14 when it does not meet the requirements of the above formula, and on terminal 14 when it does meet the requirements of the above formula. The horizontal axis represents 3πD. 2 The value of / 8Yγ is shown, with a minimum of 0.278 and a maximum of 15.312. The vertical axis represents the electrical and mechanical properties of terminal 14. It is understandable that different wire diameters, matching different groove widths, and pressing heights all affect the electrical and mechanical properties of terminal 14. As can be seen from the attached diagram, when 3πD... 2 When the value of / 8Yγ is within the range of 0.278 to 15.312, it ensures that the electrical and mechanical performance of terminal 14 remains at an optimal level, higher than that outside the range. In this case, terminal 14 experiences low heat generation and high reliability. Understandably, 3πD... 2 The value of / 8Yγ can be any value between 0.278, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 7.8, 8, 8.5, 9.5, 10.5, 11.5, 12.5, 13.5, 14.5, 15.312, and 0.278 to 15.312. No specific limitation is made here, only that when terminal 14 is crimped into the wiring groove 131 of the insulating component 13, 3πD is satisfied. 2 The value of / 8Yγ should be no less than 0.278 and no greater than 15.312 to ensure that the electrical and mechanical performance of terminal 14 is maintained in a good state and to improve the reliability of stator assembly 10 during use.

[0056] Therefore, it can be understood that the technical solution of the present invention defines the relationship between the crimping height of the terminal 14 when it is crimped into the wiring groove 131 of the insulating component 13 and the various dimensions of the terminal 14 and the connecting end 112, which satisfies 3πD. 2 The value of / 8Yγ is not less than 0.278 and not greater than 15.312. This setting ensures that the terminal 14 fully penetrates the connection end 112 and that the terminal 14 is always clamped to the connection end 112, so that the stress between the terminal 14 and the connection end 112 is in the optimal state, ensuring sufficient contact between the terminal 14 and the connection end 112, and keeping the contact resistance between the terminal 14 and the connection end 112 within a reasonable range, thereby improving the reliability of the stator assembly 10 during use.

[0057] In one embodiment of the stator assembly 10 of this application, a limiting post 132 is provided at the bottom of the wiring groove 131, and the connecting end 112 is located at the top of the limiting post 132.

[0058] Understandably, by raising the height of the connecting end 112 through the limiting post 132, it is ensured that the connecting end 112 can enter the groove 141 of the straight section. The limiting post 132 is at least inserted in the groove 141 of the guide section, ensuring that the connecting end 112 is clamped in the straight section and that the outer insulation layer is pierced by the groove wall of the groove 141 of the straight section. This ensures that there is sufficient electrical contact between the decoupling and the terminal 14, so that the stress between the terminal 14 and the connecting end 112 is in the optimal state, ensuring sufficient contact between the terminal 14 and the connecting end 112, and keeping the contact resistance between the terminal 14 and the connecting end 112 within a reasonable range, thereby improving the reliability of the terminal 14 during use.

[0059] In one embodiment of the stator assembly 10 of this application, the width of the limiting post 132 is smaller than the width of the groove 141;

[0060] And / or, the top of the limiting post 132 is located between the wire groove 141 and the guide groove 142.

[0061] Understandably, the function of the limiting post 132 is to raise the height of the connecting end 112 so as to push the connecting end 112 into the wire groove 141. In this embodiment, the width of the wire groove 141 is greater than the cross-sectional width of the limiting post 132, which can avoid interference between the limiting post 132 and the groove wall of the wire groove 141 when the limiting post 132 pushes the connecting end 112 into the wire groove 141, thereby ensuring that the connecting section can be pushed into the wire groove 141.

[0062] In some embodiments, the top of the limiting post 132 is located between the wire groove 141 and the guide groove 142, ensuring that the connecting end 112 is fully inserted into the wire groove 141 and pierced by the groove wall of the wire groove 141, thereby ensuring sufficient electrical contact between the connecting section and the terminal 14, so that the stress between the terminal 14 and the connecting end 112 is in the optimal state, ensuring sufficient contact between the terminal 14 and the connecting end 112, so that the contact resistance between the terminal 14 and the connecting end 112 is within a reasonable range, and improving the reliability of the terminal 14 during use.

[0063] Please refer to Figure 4 In one embodiment of the stator assembly 10 of this application, the total length of the wire groove 141 and the guide groove 142 is defined as L1, the height of the limiting post 132 is L2, the distance between the bottom of the terminal 14 and the bottom of the wiring groove 131 is L3, and the value of L2 / L3-L1 is not less than 0.06 and not more than 12.61.

[0064] In this embodiment, the length requirements of the insulating component 13 and the terminal 14 are defined to satisfy 0.06≤L2 / L3-L1≤12.61, that is, the value of L2 / L3-L1 is not less than 0.06 and not more than 12.61. This setting ensures that the terminal 14 pierces the electromagnetic wire and that the electromagnetic wire is within the maximum stress range of the terminal 14. The terminal 14 and the electromagnetic wire have mutual stress, and the terminal 14 and the electromagnetic wire always meet the contact requirements, thus extending the service life of the terminal 14.

[0065] In one embodiment of the stator assembly 10 of this application, the stator body 11 includes three coil groups, and three terminals 14 are provided, each terminal 14 being crimped to the connection end 112 of the same coil group.

[0066] In this embodiment, the stator winding includes at least three coil groups, each coil group having multiple coils. One or more coils in each coil group can be connected in series. When all the coils in a coil group are connected in series, the coil group has two connection terminals 112. When not all the coils in a coil group are connected in series, the number of connection terminals 112 in the coil group is greater than two. In this case, the insulating component 13 is provided with a corresponding number of wiring slots 131, so that each connection terminal 112 of the multiple coil groups is located in a wiring slot 131. In addition, three terminals 14 are provided, each terminal 14 corresponding to a coil group, and is provided with a corresponding number of plug-in parts 143 to simultaneously pierce and electrically connect at least two connection terminals 112 on the coil group. Each terminal 14 can be connected to a lead wire 16 for connecting to an external circuit, thereby making the external circuit electrically connected to each coil group.

[0067] Please refer to Figure 6 and Figure 7In one embodiment of the stator assembly 10 of this application, the stator assembly 10 further includes:

[0068] Junction box 15, which covers the three terminals 14 and is connected to the insulating component 13; and

[0069] The lead wire 16 has three leads, which are inserted into the same junction box 15 and are electrically connected to a terminal 14 respectively.

[0070] In this embodiment, a junction box 15 is also provided on the stator assembly 10. The junction box 15 can be fixedly installed on the insulating component 13 by bolts to cover the exposed part of the insulating component 13. The insulating component 13 has a clearance hole at the position corresponding to the wiring slot 131 so that one end of the lead wire 16 passes through the clearance hole of the insulating component 13 and is inserted into the terminal 14 for electrical connection. The junction box 15 is also provided with a wiring cover. The wiring cover is placed on the junction box 15 to close the clearance hole. At the same time, a space is formed between the junction box 15 and the wiring cover to accommodate the lead wire 16. This space is used to limit and fix the part of the lead wire 16 placed between the junction box 15 and the wiring cover, so that one end of the lead wire 16 can be more stably connected to the terminal 14 and prevent it from loosening, thereby improving the stability and reliability of the motor 100.

[0071] Furthermore, there are three lead wires 16, and three clearance holes are provided on the junction box 15 corresponding to the three terminals 14, so that one end of each lead wire 16 passes through a clearance hole and connects to a terminal 14, so that the three lead wires 16 are connected to the same junction box 15, which can effectively avoid assembly errors on the production line.

[0072] Please refer to Figure 6 In one embodiment of the stator assembly 10 of this application, the lead wire 16 includes a wire body 161 and a insert 162 disposed at the end of the wire body 161. The insert 162 is disposed at an angle to the wire body 161. The insert 162 is inserted into the junction box 15 and the terminal 14 and is electrically connected to the terminal 14.

[0073] In this embodiment, the lead wire 16 includes a wire body 161 and a plug 162. The plug 162 is disposed at one end of the wire body 161. The wire body 161 is relatively soft and can be bent and wound, facilitating wiring and connection to an external power source. The plug 162 has a certain rigidity, allowing it to be inserted into the junction box 15 and electrically connected to the terminal 14, which can improve the stability of the overall structure. Furthermore, the plug 162 is set at an angle to the wire body 161, approximately perpendicular to it. This arrangement makes the junction box 15... The space between the junction box 15 and the junction cover to accommodate the lead wire 16 is set approximately perpendicular to the axis of the clearance hole. Thus, when the insert 162 is inserted into the clearance hole, the wire body 161 is located in the space between the junction box 15 and the junction cover to accommodate the lead wire 16. The insert 162 can limit the lead wire 16 when it is pulled outward, preventing it from being pulled out. This improves the connection strength between the lead wire 16 and the junction box 15, enhances the stability of the overall structure, and thus improves the reliability of the motor 100.

[0074] Please refer to Figure 7 In one embodiment of the stator assembly 10 of this application, the ends of the three leads 16 that are furthest from the junction box 15 are connected to the same lead connector 163.

[0075] In this embodiment, the three lead wires 16 are wound into a bundle of lead wires 16 in a three-phase sequence, and the three lead wires 16 are connected together to the same lead wire connector 163. This arrangement facilitates the electrical connection of the lead wires 16 to an external power source, reduces assembly processes, improves assembly efficiency, and reduces the risk of incorrect assembly.

[0076] Please refer to Figure 2 and Figure 8 In one embodiment of the stator assembly 10 of this application, the stator assembly 10 further includes a frame 17, the frame 17 is disposed on the side wall of the stator body 11, and the surface of the frame 17 facing away from the stator body 11 is provided with a plurality of wiring channels 171, the plurality of wiring channels 171 are spaced apart along the height direction of the stator core 111, and the electromagnetic wire of each coil group is disposed in one of the wiring channels 171.

[0077] In this embodiment, a frame 17 is also fixed to the outer wall of the stator body 11. The frame 17 is arranged to roughly surround part of the stator body 11 circumferentially, and at least two spaced partition layers are provided on the side of the frame 17 facing away from the stator core 111 to divide the outer surface of the frame 17 into at least three wiring channels 171. Each wiring channel 171 contains the electromagnetic wire of a coil group, which can limit and fix the electromagnetic wire, improve the positional stability of the electromagnetic wire, and also separate the electromagnetic wires of different phases to ensure that the electromagnetic wires of different phases have sufficient electrical safety distance. The wiring channel 171 can be a groove recessed on the surface of the frame 17, or it can be a channel formed by a limiting protrusion 172 protruding on the surface of the frame 17 in the following embodiment. It is not limited here.

[0078] Please refer to Figure 8 In one embodiment of the stator assembly 10 of this application, at least one limiting protrusion 172 is provided between two adjacent wiring channels 171.

[0079] In this embodiment, at least two limiting protrusions 172 are provided on the surface of the frame 17 facing away from the stator core 111, dividing the at least two limiting protrusions 172 into at least two layers spaced apart along the height direction of the stator assembly 10. Each layer of limiting protrusions 172 defines a wiring channel 171 on both sides, allowing electromagnetic wires between different phases to be separated by the limiting protrusions 172. Each layer of limiting protrusions 172 can be a rib structure extending along the wiring channel 171, or it can be at least two limiting protrusions 172 spaced apart along the wiring channel 171; no limitation is made here. In this embodiment, defining the wiring channel 171 by providing limiting protrusions 172 avoids damaging the structural strength of the frame 17 as in the case of slotting, thus preventing a decrease in the structural strength of the frame 17. It also avoids the limitation of the wiring groove 141 depth due to the thickness of the frame 17, which would prevent the electromagnetic wires from being properly accommodated. The method of this embodiment can ensure that the frame 17 has good structural strength, and the limiting protrusions 172 of different heights can be set according to the actual situation to ensure that the electromagnetic wire is fixed in the wiring channel 171, thereby improving the overall structural stability, performance stability and service life, and making the use of stator assembly 10 and motor 100 more reliable.

[0080] Please refer to Figure 1 This application also proposes an electric motor 100, including a rotor 20 and a stator assembly 10 as described in any of the preceding claims, the stator assembly 10 comprising:

[0081] The stator body 11 is provided with a plurality of coil groups, at least some of which have at least two connection terminals 112;

[0082] Insulating component 13, the insulating component 13 being disposed on the stator body 11, the insulating component 13 having at least one wiring groove 131; and

[0083] Terminal 14, wherein the terminal 14 has at least one wire groove 141 and a guide groove 142 located at the front end of the wire groove 141, the terminal 14 is inserted into the wiring groove 131, and at least one of the connecting ends 112 is accommodated in the wire groove 141;

[0084] Define the wire diameter of the connecting end 112 as D, the width of the wire groove 141 as γ, and the length of the wire groove 141 as Y, such that 3πD 2 The value of / 8Yγ is not less than 0.278 and not greater than 15.312.

[0085] The motor 100 proposed in this application includes a stator assembly 10 and a rotor 20. The stator assembly 10 includes a stator body 11, which includes a stator core 111 and a stator winding. The stator core 111 has a plurality of stator teeth spaced apart circumferentially thereon, and two adjacent stator teeth define a slot in the stator assembly 10. The stator winding is wound on the stator teeth and includes a plurality of coil groups. Each coil group has at least two connection ends 112. It is understood that each coil group has a plurality of coils, and one or more coils in each coil group can be connected in series. When all the coils in a coil group are connected in series, the coil group has two connection ends 112. When the coils in a coil group are not all connected in series, the number of connection ends 112 in the coil group will be greater than two.

[0086] In this embodiment, an insulating component 13 is provided on the stator core 111. The insulating component 13 is provided with a plurality of wiring slots 131, such that each connection end 112 is disposed in a wiring slot 131. At the same time, a plurality of terminals 14 are provided. The terminals 14 can be inserted into the wiring slots 131 to pierce the insulating outer layer of the connection end 112. Lead wires 16 can be connected to the terminals 14 for connecting to external circuits, thereby making the external circuits electrically connected to the connection end 112. Specifically, the terminals 14 are provided with connected guide slots 142 and wire slots 141. The guide slots 142 are generally flared to guide the connection end 112 into the wire slot 141 when the terminal 14 is inserted into the wiring slot 131, so that the connection end 112 can be pierced by the side wall of the wire slot 141 and thus conduct to the terminal 14.

[0087] Furthermore, in this embodiment, the wire diameter of the connection end 112 is defined as D, the width of the wire groove 141 is γ, the length of the wire groove 141 is Y, and D > γ. At this time, by converting the crimping height of the terminal 14, 3πD is made possible. 2 / 8Yγ satisfies 3πD 2The value of / 8Yγ is not less than 0.278 and not greater than 15.312, thereby ensuring that the connecting end 112 can enter the groove 141 and be fully penetrated by the groove wall of the straight section, so that the connecting end 112 and the terminal 14 maintain sufficient contact, reducing the contact resistance between the terminal 14 and the connecting end 112, reducing the heat generated during the operation of the motor 100, reducing the risk of damage to the stator assembly 10 and the motor 100, and improving the reliability of use. Furthermore, it allows the connecting end 112 to be clamped in the straight section, increasing the connection strength between the connecting end 112 and the terminal 14, and improving the overall structural stability.

[0088] Therefore, it can be understood that the technical solution of the present invention defines the relationship between the crimping height of the terminal 14 when it is crimped into the wiring groove 131 of the insulating component 13 and the various dimensions of the terminal 14 and the connecting end 112, which satisfies 3πD. 2 The value of / 8Yγ is not less than 0.278 and not greater than 15.312. This setting ensures that the terminal 14 fully penetrates the connection end 112 and that the terminal 14 is always clamped to the connection end 112, so that the stress between the terminal 14 and the connection end 112 is in the optimal state, ensuring sufficient contact between the terminal 14 and the connection end 112, and keeping the contact resistance between the terminal 14 and the connection end 112 within a reasonable range, thereby improving the reliability of the stator assembly 10 during use.

[0089] Please refer to Figure 1 This application also proposes a compressor 1, including a motor 100 as described in the previous embodiments. The specific structure of the motor 100 is as described in the above embodiments. Since the compressor 1 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0090] This application also proposes a refrigeration device, including a compressor 1 as described in the previous embodiments. The specific structure of the compressor 1 is as described in the above embodiments. Since this refrigeration device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0091] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A stator assembly, characterized in that, include: The stator body is provided with multiple coil groups, and at least some of the coil groups have at least two connection terminals; An insulating component, wherein the insulating component is disposed on the stator body, and at least one wiring groove is formed on the insulating component; and The terminal has at least one wire groove and a guide groove located at the front end of the wire groove. The terminal is inserted into the wire groove, and at least one of the connecting ends is accommodated in the wire groove. Define the diameter of the connecting wire as D, the width of the groove as γ, and the length of the groove as Y, such that 3πD 2 The value of / 8Yγ is not less than 0.278 and not greater than 15.

312.

2. The stator assembly as claimed in claim 1, characterized in that, The bottom of the wiring groove is provided with a limiting post, and the connecting end is located at the top of the limiting post.

3. The stator assembly as described in claim 2, characterized in that, The width of the limiting post is smaller than the width of the groove; And / or, the top of the limiting post is located between the groove and the guide groove.

4. The stator assembly as claimed in claim 2, characterized in that, The total length of the wire groove and the guide groove is defined as L1, the height of the limiting post is L2, and the distance between the bottom of the terminal and the bottom of the wiring groove is L3, such that the value of L2 / L3-L1 is not less than 0.06 and does not exceed 12.

61.

5. The stator assembly as claimed in claim 1, characterized in that, The stator body includes three coil groups, and three terminals are provided, with each terminal being crimped to the connection end of the same coil group.

6. The stator assembly as claimed in claim 5, characterized in that, The stator assembly further includes: Junction box, the junction box cover covering the three terminals and connected to the insulating component; and The terminal block has three leads, which are inserted into the junction box and electrically connected to one of the terminals respectively.

7. The stator assembly as claimed in claim 6, characterized in that, The lead wire includes a wire body and a plug at the end of the wire body. The plug is set at an angle to the wire body. The plug is inserted into the junction box and the terminal and is electrically connected to the terminal. And / or, the ends of the three leads furthest from the junction box are connected to the same lead connector.

8. The stator assembly as claimed in any one of claims 1 to 7, characterized in that, The stator assembly also includes a frame, which is disposed on the side wall of the stator body. The surface of the frame facing away from the stator body is provided with multiple wiring channels, which are spaced apart along the height direction of the stator body. The electromagnetic wire of each coil group is disposed in one of the wiring channels.

9. The stator assembly as claimed in claim 8, characterized in that, At least one limiting protrusion is provided between two adjacent wiring channels.

10. An electric motor, characterized in that, It includes a rotor and a stator assembly as described in any one of claims 1 to 9.

11. A compressor, characterized in that, Including the motor as described in claim 10.

12. A refrigeration device, characterized in that, Includes the compressor as described in claim 11.

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