Controller assembly and motor

Abstract

The invention provides a controller assembly and a motor, and the controller assembly comprises a controller, a conductive meson, and an elastic part. The controller is elastically connected with the conductive meson through the elastic piece; and the controller is electrically connected with the conductive meson, so that the controller can be electrically connected with an external component through the conductive meson. According to the technical scheme, the controller and the stator winding such as a three-phase winding are elastically connected through the conductive meson and the elastic piece, high reliability of connection between the controller and the stator winding can be guaranteed, meanwhile, the conductive meson and the elastic piece are both designed to be conductive, elastic and conductive mechanical connection between the controller and the stator winding can be achieved, and the reliability of the controller is improved. The traditional technical means of rigid connection by soldering tin wires is replaced, the operation is simple, convenient and safe, and the defects of pseudo soldering, high-temperature danger, generation of toxic gas and waste gas and the like in the traditional technical means are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a controller component and a motor. Background Art

[0002] Traditional motor controller connection technology solutions, such as Figure 1 As shown, the motor includes a connection structure 1', a three-phase winding 2' of the motor, a motor controller 3', a stator assembly 4', a power module component 5', an end cover 6' and a heat-conducting medium 7'. The connection structure 1' is a pin or a terminal, one end of which is connected to the three-phase winding 2' of the motor, and the connection method can be a winding connection or a clamping connection, etc.; one end is connected to the motor controller 3', and the motor controller 3' is connected to one end of the pin or terminal by welding with solder wire. The motor controller is fixed to the stator assembly 4'. The power module component 5' is fixed to the motor controller 3', and the stator assembly 4' and the end cover 6' are interference fit to complete the tight fit of the motor. When the stator assembly 4' and the end cover 6' are assembled, the heat-conducting medium 7' between the power module component 5' and the end cover 6' is squeezed. To avoid extrusion damage to components on the motor controller, the heat conducting medium needs to be a flexible material, such as thermally conductive silicone or thermally conductive silicone sheet, etc. The heat on the power module components 4' is transferred to the end cover 6' through the thermally conductive medium 7' for heat dissipation.

[0003] The motor controller 3' and the motor three-phase winding 2' are connected by soldering. This technical method currently has defects such as poor welding caused by human error or abnormal solder material, and requires high-temperature melting of solder wire for welding connection, such as 400℃, which is complicated to operate and dangerous at high temperatures. The exhaust gas generated by soldering is harmful to the human body, and air purifiers and other instruments are needed to assist in purifying the exhaust gas. Summary of the invention

[0004] Therefore, the present invention provides a controller assembly and a motor, which can solve the technical problems of "cold solder joints", high temperature hazards, and generation of toxic waste gas that occur during the electrical connection processing of the controller in the prior art.

[0005] In order to solve the above problems, the present invention provides a controller component, which includes a controller, a conductive meson and an elastic member; the controller is elastically connected to the conductive meson through the elastic member; and the controller is electrically connected to the conductive meson, so that the controller can be electrically connected to external components through the conductive meson.

[0006] In some embodiments, the conductive meson has a first connection part, and the controller has a second connection part; the elastic member is disposed between the first connection part and the second connection part so as to elastically connect the controller to the conductive meson by cooperating with the first connection part and the second connection part.

[0007] In some embodiments, one end of the elastic member contacts the first connection portion, and the other end of the elastic member contacts the second connection portion.

[0008] In some embodiments, the first connecting part is made of a conductive material and is electrically connected to the conductive medium; the elastic member is also made of a conductive material, and the second connecting part is provided with a conductive layer, and the second connecting part is in contact with the elastic member through the conductive layer, so that the conductive layer is electrically connected to the elastic member; wherein the first connecting part, the elastic member and the conductive layer form a conductive flow path, and the controller is electrically connected to the conductive medium through the conductive flow path.

[0009] In some embodiments, the conductive particle has a first end and a second end opposite to each other, and the conductive particle is electrically connected to an external component through the second end; the first end has a stopper, and the controller has a via hole passing through both sides, the conductive particle is used to pass through the via hole, and the controller is stopped and limited by the stopper to prevent the controller from escaping from the first end.

[0010] In some embodiments, the first end has an elastic arm, and the stop portion is arranged at the end of the elastic arm; the elastic arm has an initial state and a deformation state in which it is driven to deform; wherein, when the elastic arm is in the deformation state, the elastic arm can drive the stop portion to pass through or exit the through hole; when the elastic arm is in the initial state and passes through the through hole, the stop portion can stop and limit the controller.

[0011] In some embodiments, the width of the via hole is Be, the elastic arm and the stopper form a hook, and the thickness of the hook is Hb, wherein Hb<Be<Hb+Hb / 4.

[0012] In some embodiments, the elastic arm and the stop portion form a hook, the number of the hooks is two and they are symmetrically arranged, the two hooks are arranged at an interval, the interval width between the two hooks is Bd, the maximum distance between the two stop portions on the hooks is Ba, the maximum distance between the two elastic arms on the hooks is Bc, and the length of the via is La, wherein Bc+Bd<La<Ba.

[0013] In some embodiments, when the conductive meson has a first connecting part, the controller has a second connecting part, and the elastic member is arranged between the first connecting part and the second connecting part so as to elastically connect the controller to the conductive meson by cooperating with the first connecting part and the second connecting part, the first connecting part is protruded on the side wall between the two ends of the conductive meson, and the controller has a first area opposite to the first connecting part, and the first area serves as the second connecting part.

[0014] In some embodiments, the first connecting portion is provided with a first groove for accommodating one end of the elastic member;

[0015] And / or, the first region is provided with a second groove for accommodating the other end of the elastic member;

[0016] And / or, the elastic member has an inner hole, and the elastic member is sleeved on the conductive meson through the inner hole.

[0017] In some embodiments, when the elastic member has an inner hole, the elastic member is sleeved on the conductive meson through the inner hole, and the elastic arm and the stop portion form a hook, the number of the hooks is two and they are symmetrically arranged, when the two hooks are arranged at intervals, the interval width between the two hooks is Bd, the maximum distance between the stop portions on the two hooks is Ba, the portion of the conductive meson on which the elastic member is sleeved is taken as the first section, the maximum width of the first section is Bc, and the aperture of the inner hole is De, wherein Bd=Ba / 4=Bc / 2, Bc<De<3Bc / 2.

[0018] In some embodiments, when the first region is provided with a second groove for accommodating the other end of the elastic member, and the elastic member has an inner hole, and the elastic member is sleeved on the conductive meson through the inner hole, the outer diameter of the elastic member is Db, the aperture of the inner hole is De, and the slot diameter of the second groove is Df; wherein, Db<Df<Db+(Db-De) / 2.

[0019] In some embodiments, when the first region is provided with a second groove for accommodating the other end of the elastic member, the groove depth of the second groove is Hc, and the thickness of the controller is Hd, wherein Hd / 3<Hc<Hd / 2.

[0020] In some embodiments, when the first connecting portion is provided with a first groove for accommodating one end of the elastic member, and the first region is provided with a second groove for accommodating the other end of the elastic member, the via hole is arranged on the bottom surface of the second groove, the distance between the stop portion and the bottom surface of the first groove is Ha, the height of the elastic member in a free state is He, the groove depth of the second groove is Hc, and the thickness of the controller is Hd; wherein, Hd-Hc<Ha-He<0.

[0021] The present invention also provides a motor, comprising a stator winding and a controller assembly as described in any one of the above; wherein the stator winding serves as the external component, so that the controller is electrically connected to the stator winding through the conductive medium.

[0022] In some embodiments, the controller may move relative to the conductive medium in a first direction to apply a force to the elastic member to deform the elastic member;

[0023] Among them, the controller is provided with a power module component, and the power module component has a first surface located on the upstream side of the first direction; the motor also includes an end cover, and the end cover is provided with a rigid heat dissipation structure, and the end cover is in contact with the first surface through the rigid heat dissipation structure.

[0024] In some embodiments, the motor has a first a-end and a second a-end opposite to each other, the end cover has the first a-end, and the first direction is a direction from the first a-end to the second a-end in the axial direction of the motor.

[0025] In some embodiments, the rigid heat dissipation structure is arranged on the outer side of the end cover, and the outer side is provided with a mounting hole that penetrates to the inner side of the end cover; wherein, the rigid heat dissipation structure is provided with a protrusion, and the protrusion is used to pass through the mounting hole, and the rigid heat dissipation structure contacts the first surface through the protrusion.

[0026] In some embodiments, the motor includes a stator assembly, which has the stator winding. When the conductive element has a first connection portion, the conductive element has a first end and a second end relative to each other, the first connection portion is protruding on the side wall between the two ends of the conductive element, and the conductive element is electrically connected to external components through the second end, a avoidance groove is provided on the stator assembly, and an electrical connection hole for inserting the second end is provided on the bottom surface of the avoidance groove, and the second end is electrically connected to the stator winding through the electrical connection hole; wherein the avoidance groove is used to accommodate the first connection portion.

[0027] In some embodiments, when the first connecting portion is provided with a first groove for accommodating one end of the elastic member, the groove diameter of the first groove is Da, and the groove diameter of the avoidance groove is Df1, wherein Df1>Da;

[0028] And / or, when the controller has a second connecting part, and the elastic member is arranged between the first connecting part and the second connecting part, so that the controller is elastically connected to the conductive meson by cooperating with the first connecting part and the second connecting part, and the controller has a first area opposite to the first connecting part, the first area serves as the second connecting part, and the first connecting part is provided with a first groove for accommodating one end of the elastic member, and the first area is provided with a second groove for accommodating the other end of the elastic member, and the first end has a stopper, the controller has a through hole passing through both sides, the conductive meson is used to pass through the through hole, and the controller is stopped and limited by the stopper to prevent the controller from escaping from the first end, the distance between the stopper and the bottom surface of the first groove is Ha, the depth of the avoidance groove is Hg, the thickness of the controller is Hd, and the groove depth of the second groove is Hj, wherein 0<Hg<Ha-Hj-Hd.

[0029] In some embodiments, the stator assembly has an open slot, the avoidance slot is arranged on the bottom surface of the open slot, the depth of the open slot is Hn, the height of the power module components is Ho, the thickness of the controller is Hd, the side of the controller opposite to the end cover is the second side, the maximum distance between the second side and the inner side surface of the end cover is Hp, and the maximum distance between the first side and the inner side surface of the end cover is Hk, wherein Hp-Ho<Hk<Hn-Hd-Ho.

[0030] A controller component and a motor provided by the present invention have the following beneficial effects:

[0031] 1. The controller and the stator winding, for example, the three-phase winding, are elastically connected through conductive mesons and elastic parts, which can ensure the high reliability of the connection between the two. At the same time, the conductive mesons and elastic parts are designed to be conductive, which can realize the elastic and conductive mechanical connection between the controller and the stator winding, replacing the traditional technical means of rigid connection using solder wire welding. The operation is simple and safe, and avoids the defects of "cold welding", high temperature hazards, and generation of toxic exhaust gas in traditional technical means.

[0032] 2. The elastic connection design between the controller and the stator winding enables the controller to have axial adjustment capabilities, so that the power module components on the controller can use a rigid heat dissipation structure for conduction heat dissipation, replacing the traditional technical means of using flexible media to conduct heat for heat dissipation. The thermal conductivity of the rigid heat dissipation structure is usually relatively large. For example, the thermal conductivity of aluminum alloy can be as high as 150-210W / (m·K). Compared with the traditional technical means of using flexible media with a thermal conductivity of less than 5W / (m·K) for conduction heat dissipation, the heat dissipation capacity of the motor is greatly improved, and the performance of the motor is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0034] Figure 1 It is a cross-sectional view of a motor in the prior art;

[0035] Figure 2 is a schematic diagram of a controller component connected to a stator winding of a motor provided by an embodiment of the present invention;

[0036] Figure 3 yes Figure 2 The enlarged schematic diagram of point A in the middle;

[0037] Figure 4 It is a schematic diagram of assembling a conductive meson and an elastic member provided by one embodiment of the present invention;

[0038] Figure 5 yes Figure 4 A structural diagram of another perspective of the structure in FIG.

[0039] Figure 6 It is a schematic structural diagram of a conductive meson provided by one embodiment of the present invention;

[0040] Figure 7 yes Figure 6 A cross-sectional view of a conducting meson;

[0041] Figure 8 yes Figure 6 A cross-sectional view of the conducting meson from another perspective;

[0042] Fig. 9 yes Figure 6 A top view of the conducting muon in the middle;

[0043] Fig.10is a schematic structural diagram of an elastic member provided by an embodiment of the present invention;

[0044] Fig.11 yes Fig.10 A top view of the middle elastic member;

[0045] Fig.12 It is a schematic diagram of the structure of the controller;

[0046] Fig.13 yes Fig.12 The enlarged schematic diagram of point B in the middle;

[0047] Fig.14 It is a structural diagram of the controller from another perspective;

[0048] Fig.15 This is a structural diagram of the controller from another perspective

[0049] Fig.16 is a cross-sectional view of a motor provided by one embodiment of the present invention;

[0050] Fig.17 yes Fig.16 The enlarged schematic diagram of point D in the middle;

[0051] Fig.18 It is a schematic diagram of the assembly of the end cover and the rigid heat dissipation structure;

[0052] Fig.19 It is a schematic diagram of the structure of the end cover;

[0053] Fig. 20 is a schematic diagram of a rigid heat dissipation structure;

[0054] Fig.21 It is a schematic diagram of the structure of the stator;

[0055] Fig. 22 It is a schematic diagram of the assembly of the stator, the conductive meson and the elastic member;

[0056] Fig.23 is a structural schematic diagram of the stator assembly;

[0057] Fig.24 yes Fig.23 Enlarged schematic diagram of point E in the middle.

[0058] The accompanying drawings are marked as follows:

[0059] 1', connection structure; 2', stator winding; 3', controller; 4', stator assembly; 5', power module components; 6', end cover; 7', thermal conductive meson; 5, power module components; 8, conductive meson; 9, elastic member; 10, controller; 10a, first area; 10b, second surface; 11, elastic electrical structure; 13, end cover; 14, rigid heat dissipation structure; 15, fastener; 16, stator winding; 17, stator assembly; 18, rotor assembly; 19, stator; 20, first a end; 21, second a end; 51, first surface; 81, U-shaped groove; 82, Hook; 83, operating hole; 84, first groove; 85, first connecting part; 86, first section; 91, inner hole; 801, first end; 802, second end; 821, elastic arm; 822, stopper; 101, second groove; 102, via hole; 103, conductive layer; 104, second connecting part; 121, raised part; 122, mounting hole; 123, positioning buckle point; 124, first cover opening; 17, injection molding material; 171, electrical connection hole; 172, positioning opening; 173, second cover opening; 174, avoidance groove; 175, opening groove; m, first direction. DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0062] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0063] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0064] See also Figure 2-3 As shown, according to an embodiment of the present invention, a controller assembly is provided, which includes a controller 10, a conductive meson 8 and an elastic member 9. The controller 10 may be a control panel, etc. The controller 10 is elastically connected to the conductive meson 8 through the elastic member 9. The controller 10 is electrically connected to the conductive meson 8 so that the controller 10 can be electrically connected to external components through the conductive meson 8, for example, the controller 10 can be electrically connected to the stator winding 16 of the motor, such as the three-phase winding, through the conductive meson 8.

[0065] In the above example, when the external component is a three-phase winding of a motor, the controller 10 can be electrically connected to the three-phase winding through the conductive meson 8. The conductive meson 8 and the three-phase winding can be electrically connected by existing winding connection or clamping connection. Among them, since the controller 10 and the conductive meson 8 are elastically electrically connected, the technical means of using solder wire to weld and connect between the traditional controller 10 and the three-phase winding is changed, thus avoiding the defects of "false welding", high temperature danger, and generation of toxic gas and exhaust gas existing in the traditional technical means.

[0066] In some embodiments, Figure 4-8 As shown, the aforementioned conductive meson 8 may be in a rod shape.

[0067] In order to achieve the technical effect of elastically connecting the controller 10 with the conductive medium 8 through the elastic member 9, in some embodiments, as Figure 16-17As shown, the aforementioned conductive meson 8 may have a first connection portion 85, and the first connection portion 85 may be integrally formed on the conductive meson 8. The aforementioned controller 10 has a second connection portion 104. The aforementioned elastic member 9 is disposed between the first connection portion 85 and the second connection portion 104, so as to elastically connect the controller 10 to the conductive meson 8 by cooperating with the first connection portion 85 and the second connection portion 104.

[0068] In a specific application example, one end of the elastic member 9 contacts the first connection portion 85, and the other end contacts the second connection portion 104. The elastic member 9 does not need to be connected to the conductive element 8 and the controller 10, so it is easy to assemble.

[0069] In order to achieve the technical effect of the aforementioned controller 10 being electrically connected to the conductive meson 8, in some embodiments, the aforementioned first connection portion 85 is made of a conductive material and is electrically connected to the conductive meson 8. In a specific application example, the first connection portion 85 is integrally formed on the conductive meson 8 and is made of the same conductive material as the conductive meson 8.

[0070] like Figure 16-17 As shown, the elastic member 9 is also made of conductive material. The second connecting portion 104 is provided with a conductive layer 103 (such as Fig.13 As shown in FIG. 1 , the conductive layer 103 may be copper foil or the like. The second connecting portion 104 contacts the elastic member 9 through the conductive layer 103, so that the conductive layer 103 is electrically connected to the elastic member 9. The first connecting portion 85, the elastic member 9 and the conductive layer 103 form a conductive flow path. The aforementioned controller 10 is electrically connected to the conductive medium 8 through the conductive flow path.

[0071] In the above example, the conductive layer 103 is electrically connected to the circuit of the controller 10 itself, and the conductive layer 103 can be a part of the structure of the controller 10 itself. The controller 10 comes with the conductive layer 103 when it leaves the factory. The controller 10 can be electrically connected to the conductive medium 8 through the conductive layer 103, the elastic member 9 and the first connecting portion 85 in sequence.

[0072] In some embodiments, Figure 2-15 As shown, the conductive meson 8 has a first end 801 and a second end 802 opposite to each other. The conductive meson 8 is electrically connected to external components through the second end 802. The first end 801 has a stopper 822. The controller 10 has a through hole 102 running through both sides. The conductive meson 8 is used to pass through the through hole 102, and the controller 10 is stopped and limited by the stopper 822 to prevent the controller 10 from coming out of the first end 801.

[0073] In the above example, when the second end 802 of the conductive meson 8 is electrically connected to an external component, the conductive meson 8 passes through the via 102 on the controller 10, and the stopper 822 on the first end 801 can prevent the controller from escaping from the first end 801. The stopper 822 cooperates with the external component to restrict the controller 10 on the conductive meson 8 and prevent the controller 10 from being loosened from the conductive meson 8, thereby improving the connection stability between the controller 10 and the conductive meson 8.

[0074] In some embodiments, Figure 6 As shown, the aforementioned first end 801 may have an elastic arm 821. The aforementioned stopper 822 is arranged at the end of the elastic arm 821. The elastic arm 821 has an initial state and a deformation state in which the elastic arm 821 is driven to deform. When the elastic arm 821 is in the deformation state, the elastic arm 821 can drive the stopper 822 to pass through or exit the through hole 102. When the elastic arm 821 is in the initial state and passes through the through hole 102, the stopper 822 can stop and limit the controller 10.

[0075] In the above example, when the conductive meson 8 is installed on the controller 10, if the elastic arm 821 is in the initial state, the stopper 822 on the elastic arm 821 cannot pass through the through hole 102. At this time, the operator can apply force to the elastic arm 821 to make the elastic arm 821 in a deformed state, and then move the elastic arm 821 so that the elastic arm 821 drives the stopper 822 to pass through the through hole 102; then release the elastic arm 821 to make the elastic arm 821 in the initial state, and at this time the stopper 822 can stop and limit the controller 10. Among them, when the conductive meson 8 needs to be removed from the controller 10, the same line applies force to the elastic arm 821 to make the elastic arm 821 in a deformed state, and then move the elastic arm 821 so that the elastic arm 821 drives the stopper 822 to exit the through hole 102, thereby realizing the removal of the conductive meson 8.

[0076] Among them, since the conductive meson 8 can be disassembled relative to the controller 10, it is convenient to repair or replace.

[0077] In some embodiments, the width of the via hole 102 may be Be, and the elastic arm 821 and the stopper 822 form a hook 82 (eg, Figure 6 The thickness of the hook 82 is Hb, wherein Hb<Be<Hb+Hb / 4.

[0078] In the above example, since Hb<Be, the hook 82 can smoothly pass through the aforementioned via 102. Among them, by setting Hb<Be<Hb+Hb / 4, it is mainly for the reliability and rationality of positioning. The thickness tolerance of the hook 82 is Hb, which generally does not exceed one-fourth of its own thickness. Therefore, it is limited to Be<Hb+Hb / 4 to ensure accurate positioning.

[0079] In some embodiments, Figure 6-7 As shown, the elastic arm 821 and the stopper 822 form a hook 82. The number of hooks 82 is two and they are symmetrically arranged. The two hooks 82 are arranged at intervals, and the interval width between the two hooks 82 is Bd. The maximum distance between the stopper 822 on the two hooks 82 is Ba. The maximum distance between the elastic arms 821 on the two hooks 82 is Bc. The length of the via 102 is La. Wherein, Bc+Bd<La<Ba.

[0080] In the above example, by making Bc+Bd<La<Ba, the horn structure formed by the two hooks 82 can smoothly pass through the through hole 102 or be removed from the through hole 102 when a tool is relatively close. And when the elastic arms 821 of the two hooks 82 recover their deformation, the stoppers 822 on the two hooks 82 cannot withdraw from the through hole 102, so that the stoppers 822 on the two hooks 82 can stop and limit the controller 10.

[0081] In a specific application example, Figure 16-17 As shown, when the aforementioned conductive medium 8 has a first connecting portion 85, the controller 10 has a second connecting portion 104, and the elastic member 9 is arranged between the first connecting portion 85 and the second connecting portion 104, so that the controller 10 is elastically connected to the conductive medium 8 by cooperating with the first connecting portion 85 and the second connecting portion 104, the aforementioned first connecting portion 85 is protruded on the side wall between the two ends of the conductive medium 8, and the controller 10 has a first area 10a opposite to the first connecting portion 85, and the first area 10a serves as the aforementioned second connecting portion 104.

[0082] The first connection portion 85 may extend along the circumferential direction of the conductive element 8 to improve the support stability of the first connection portion 85 on the elastic member 9 .

[0083] In some embodiments, as shown in FIG6 , the first connecting portion 85 may be provided with a first groove 84 for accommodating one end of the elastic member 9, and the first groove 84 has the effect of limiting one end of the elastic member 9. The first connecting portion 85 may abut against one end of the elastic member 9 through the bottom surface of the first groove 84.

[0084] In some embodiments, Fig.13 As shown, the aforementioned first area 10a may be provided with a second groove 101 for accommodating the other end of the elastic member 9, and the second groove 101 has the effect of limiting the other end of the elastic member 9. The aforementioned conductive layer 103 may be provided on the bottom surface of the second groove 101. The conductive layer 103 may be copper foil, etc. The aforementioned via 102 may be provided on the bottom surface of the second groove 101 and penetrate the conductive layer 103.

[0085] In some embodiments, Figure 10-11 As shown, the aforementioned elastic member 9 may have an inner hole 91 , and the elastic member 9 is sleeved on the conductive element 8 through the inner hole 91 .

[0086] In some embodiments, when the elastic member 9 has an inner hole 91, the elastic member 9 is sleeved on the conductive meson 8 through the inner hole 91, and the elastic arm 821 and the stop portion 822 form a hook 82, the number of the hooks 82 is two and they are symmetrically arranged, when the two hooks 82 are arranged at intervals, the interval width between the two hooks 82 is Bd, the maximum distance between the stop portions 822 on the two hooks 82 is Ba, the portion of the conductive meson 8 on which the elastic member 9 is sleeved is taken as the first section 86, the maximum width of the first section 86 is Bc, and the aperture of the inner hole 91 is De, wherein Bd=Ba / 4=Bc / 2, Bc<De<3Bc / 2.

[0087] In the above example, by making Bd=Ba / 4=Bc / 2, and Bc<De<3Bc / 2, when the two hooks 82 are squeezed and brought relatively close to each other, the elastic member 9 can be detached from the conductive meson 8, so as to facilitate the repair or replacement of the elastic member 9. In addition, the elastic member 9 can be prevented from falling off from the conductive meson 8 without the interference of external factors, thereby ensuring the integrity and integrity of the assembly of the conductive meson 8 and the elastic member 9.

[0088] Among them, by making Bd=Ba / 4=Bc / 2, it can fully describe that after the controller 10 is assembled with the conductive meson 8 and the elastic member 9, the elastic member 9 is in an elastic extrusion state, ensuring that the elastic member 9 and the controller 10 are in full contact and avoiding poor contact. At the same time, it is ensured that when the rigid heat dissipation structure 14 is assembled, the controller 10 is squeezed downward and the activity space of the controller 10 is within the elastic space range.

[0089] In some embodiments, in a specific application example mentioned above, the elastic member 9 can be a spring, etc. The outer diameter of the spring is Db, the middle diameter is Dc, and the inner diameter is De. The slot diameter of the first groove 84 is Da, wherein Bc<De<Dc<Db<Da, so that the spring can be smoothly sleeved on the first section 86 of the conductive meson 8, and the spring can be accommodated in the first groove 84.

[0090] In some embodiments, when the first region 10a is provided with a second groove 101 for accommodating the other end of the elastic member 9, and the elastic member 9 has an inner hole 91, when the elastic member 9 is sleeved on the conductive meson 8 through the inner hole 91, the outer diameter of the elastic member 9 is Db, the aperture of the inner hole 91 is De, and the slot diameter of the second groove 101 is Df. Wherein, Db<Df<Db+(Db-De) / 2.

[0091] In the above example, by making the outer diameter Db of the elastic member 9 smaller than the slot diameter Df of the second slot 101, it is possible to ensure that the elastic member 9 is embedded in the second slot 101. Figure 3 , the activity space of the elastic member 9 can be limited.

[0092] In some embodiments, when the first region 10a is provided with a second groove 101 for accommodating the other end of the elastic member 9, the groove depth of the second groove 101 is Hc, and the thickness of the controller 10 is Hd, wherein Hd / 3<Hc<Hd / 2.

[0093] In the above example, Hd / 3<Hc<Hd / 2 is mainly for the consideration of reliability and durability. Figure 4 and Fig. 9 Assembly diagram to avoid the elastic member 9 squeezing the controller 10 and causing deformation and breakdown.

[0094] In some embodiments, when the first connection portion 85 is provided with a first groove 84 for accommodating one end of the elastic member 9, and the first region 10a is provided with a second groove 101 for accommodating the other end of the elastic member 9, the via 102 is provided on the bottom surface of the second groove 101, the distance between the stopper 822 and the bottom surface of the first groove 84 is Ha, the height of the elastic member 9 in a free state is He, the groove depth of the second groove 101 is Hc, and the thickness of the controller 10 is Hd. Wherein, Hd-Hc<Ha-He<0.

[0095] In the above example, by making Hd-Hc<Ha-He, after the controller 10 is assembled into the elastic member 9, the elastic member 9 is in an elastic state, which can ensure that the controller 10 and the elastic member 9 form a full squeeze contact. And by making Ha-He<0, the rationality of the assembly design of the elastic member 9 and the conductive meson 8 can be ensured.

[0096] It should be noted here that the above-mentioned conductive meson 8 can also be called a "sheep" shaped meson in some occasions. The above-mentioned elastic member 9 is an elastic electrical medium. The conductive meson 8 and the elastic member 9 form an elastic electrical structure 11 to achieve reliable mechanical elastic electrical connection between the controller 10 and the stator winding 16, such as a three-phase winding. The conductive meson 8 is made of conductive materials such as metal materials, such as copper-clad steel, phosphor bronze, etc. The above-mentioned hook 82 can also be called a "sheep horn" in some occasions. The interval between the two hooks 82 can form a U-shaped groove 81, and the hook 82 can be provided with an operating hole 83. The operating hole 83 is not limited to a round hole. Using a tool to insert into the operating hole 83 can cause the elastic arm 821 of the hook 82 to deform so that the two hooks 82 are relatively close. Among them, the operating hole 83 can be called a "sheep eye" in some occasions. The above-mentioned first connecting portion 85 can be called a sheep's belly in some occasions.

[0097] When the elastic member 9 is a spring, the surface of the spring is not subjected to rust-proof treatment to ensure its electrical conductivity.

[0098] like Fig.16 As shown, the present invention further provides a motor, which includes a stator winding 16 and any of the controller components described above. The stator winding 16 is used as the aforementioned external component, and the controller 10 is electrically connected to the stator winding 16 through the conductive medium 8.

[0099] In some embodiments, the stator winding 16 may be a three-phase winding or the like.

[0100] In the above example, since the motor adopts a controller assembly, and since the controller 10 and the conductive medium 8 are elastically electrically connected, the traditional technical means of using solder wire to connect the controller 10 and the three-phase winding is changed, thereby avoiding the defects of "cold soldering", high temperature hazards, and the generation of toxic exhaust gas in traditional technical means.

[0101] In some embodiments, Fig.16 As shown, the aforementioned controller 10 can move along the first direction m relative to the conductive medium 8 to apply force to the elastic member 9 to deform the elastic member 9. Among them, the aforementioned controller 10 is provided with a power module component 5, and the power module component 5 has a first surface 51 located on the upstream side of the first direction m. The motor also includes an end cover 13, and a rigid heat dissipation structure 14 is provided on the end cover 13. The end cover 13 contacts the first surface 51 through the rigid heat dissipation structure 14. The rigid heat dissipation structure 14 can be against the first surface 51. In a specific application example, the aforementioned motor has a relative first a end 20 and a second a end 21, and the aforementioned end cover 13 has the first a end 20, and the aforementioned first direction m is the direction from the first a end 20 to the second a end 21 in the axial direction of the motor.

[0102] In the above example, when the rigid heat dissipation structure 14 is installed, the rigid heat dissipation structure 14 can apply force to the controller 10 through the first surface 51, so that the controller 10 runs along the first direction m relative to the conductive medium 8, so that the rigid heat dissipation structure 14 is tightly fitted with the first surface 51 of the power module component 5, and the controller 10 can be avoided from being crushed. Among them, compared with the existing flexible medium heat dissipation, the present invention adopts a rigid heat dissipation structure 14 for heat dissipation. The thermal conductivity of the rigid heat dissipation structure 14 is usually relatively large. For example, the thermal conductivity of aluminum alloy can be as high as 150-210W / (m·K). Compared with the traditional technical means of using a flexible medium with a thermal conductivity of less than 5W / (m·K) for conduction heat dissipation, the heat dissipation capacity of the motor is greatly improved, and the performance of the motor is improved.

[0103] In some embodiments, the aforementioned rigid heat dissipation structure 14 may be a metal heat dissipation component, such as an aluminum alloy heat dissipation component.

[0104] In some embodiments, Figure 18-20 As shown, the aforementioned rigid heat dissipation structure 14 is arranged on the outer side of the end cover 13, and a mounting hole 122 is provided on the outer side of the end cover 13. Among them, a protrusion 121 is provided on the rigid heat dissipation structure 14, and the protrusion 121 is used to pass through the mounting hole 122, and the rigid heat dissipation structure 14 contacts the first surface 51 through the protrusion 121.

[0105] The thickness of the end cover 13 is Hm, and the thickness of the protrusion 121 is Hf. In order for the protrusion 121 to pass through the mounting hole 122, Hm<Hf should be satisfied.

[0106] In the above example, by arranging the rigid heat dissipation structure 14 on the outer side of the end cover 13 , the rigid heat dissipation structure 14 can be in full contact with the external air for heat dissipation, which is beneficial to improving the heat dissipation efficiency of the rigid heat dissipation structure 14 .

[0107] The rigid heat dissipation structure 14 may also be fixedly connected to the end cover 13 via a fastener 15 such as a screw to ensure the connection stability between the rigid heat dissipation structure 14 and the end cover 13 .

[0108] In some embodiments, Figure 16-17 As shown, the aforementioned motor includes a stator assembly 17, and the stator assembly 17 has a stator winding 16. When the conductive meson 8 has a first connecting portion 85, the conductive meson 8 has a first end 801 and a second end 802 opposite to each other, the first connecting portion 85 is protruded on the side wall between the two ends of the conductive meson 8, and the conductive meson 8 is electrically connected to an external component through the second end 802, as shown in FIG. Figure 23-24 As shown, the stator assembly 17 is provided with a relief groove 174, and the bottom surface of the relief groove 174 is provided with an electrical connection hole 171 for the second end 802 to be inserted. The second end 802 is electrically connected to the stator winding 16 through the electrical connection hole 171. The relief groove 174 is used to accommodate the first connection portion 85.

[0109] In the above example, the second end 802 of the conductive meson 8 can be inserted into the electrical connection hole 171 via the avoidance groove 174 to be electrically connected to the stator winding 16. In addition, by designing the avoidance groove 174 to avoid the first connection part 85, so that the first connection part 85 is located in the avoidance groove 174, the overall installation structure can be made more compact.

[0110] In some embodiments, when the first connecting portion 85 is provided with a first groove 84 for accommodating one end of the elastic member 9 , the groove diameter of the first groove 84 is Da, and the groove diameter of the avoidance groove 174 is Df1 , wherein Df1>Da.

[0111] In the above example, by making Df1>Da, it can be ensured that the elastic member 9 does not interfere with the avoidance hole.

[0112] In some embodiments, when the controller 10 has a second connection portion 104, and the elastic member 9 is disposed between the first connection portion 85 and the second connection portion 104, so that the controller 10 is elastically connected to the conductive medium 8 by cooperating with the first connection portion 85 and the second connection portion 104, and the controller 10 has a first area 10a opposite to the first connection portion 85, the first area 10a serves as the aforementioned second connection portion 104, and the first connection portion 85 is provided with a first groove 84 for accommodating one end of the elastic member 9, and the first area 10a is provided with a first groove 84 for accommodating one end of the elastic member 9. The second groove 101 at the other end of the elastic member 9, and the first end 801 has a stopper 822, the controller 10 has a through hole 102 running through both sides, the conductive particle 8 is used to pass through the through hole 102, and the controller 10 is stopped and limited by the stopper 822 to prevent the controller 10 from escaping from the first end 801, the distance between the stopper 822 and the bottom surface of the first groove 84 is Ha, the depth of the avoidance groove 174 is Hg, the thickness of the controller 10 is Hd, and the groove depth of the second groove 101 is Hj, wherein 0<Hg<Ha-Hj-Hd.

[0113] In the above example, by making 0<Hg<Ha-Hj-Hd, it is possible to ensure that the elastic member 9 has the elastic space I.

[0114] In some embodiments, Figure 16-17 , 23-24, the aforementioned stator assembly 17 has an open slot 175, the avoidance slot 174 is arranged on the bottom surface of the open slot 175, the depth of the open slot 175 is Hn, the height of the power module component 5 is Ho, the thickness of the controller 10 is Hd, the side of the controller 10 opposite to the end cover 13 is the second side 10b, the maximum distance between the second side 10b and the inner side surface of the end cover 13 is Hp, and the maximum distance between the aforementioned first side 51 and the inner side surface of the end cover 13 is Hk. Among them, Hp-Ho<Hk<Hn-Hd-Ho.

[0115] In the above example, by making Hp-Ho<Hk<Hn-Hd-Ho, it can be ensured that the assembly end cover 13 axially presses the power module component 5 downward to complete the assembly in the elastic space I.

[0116] The conductive medium 8 and the elastic member 9 form an elastic electrical structure 11. When the stator winding 16 is a three-phase winding, the number of the elastic electrical structures 11 is three. Correspondingly, the number of the second grooves 101 on the controller 10 is also three, and the bottom surface of each second groove 101 is provided with the aforementioned via 102.

[0117] The aforementioned end cover 13 is buckled on one end of the stator assembly 17, and a positioning buckle point 123 (such as Fig.19 As shown), the stator assembly 17 is provided with a positioning opening 172 (as shown Fig.23 As shown), the positioning buckle point 123 is snapped into the positioning opening 172 to fix the end cover 13 on the stator assembly 17, and can also ensure that the protrusion 121 on the rigid heat dissipation structure 14 and the first surface 51 on the power module component 5 are accurately positioned.

[0118] The end cover 13 has a first cover opening 124, and the stator assembly 17 has a second cover opening 173. After the end cover 13 is covered on the stator assembly 17, the first cover opening 124 and the second cover opening 173 are fully tightly matched to complete the motor assembly.

[0119] The stator assembly 17 can be integrally molded with the stator 19 using an injection molding material 17 such as BMC, etc. The stator 19 has the stator winding 16. The motor can also include a rotor assembly 18, which is embedded in the stator assembly 17.

[0120] In some embodiments, the motor can be a DC motor, etc. The controller 10 and the stator winding 16, such as the three-phase winding, are elastically connected through the conductive meson 8 and the elastic member 9, which can ensure the high reliability of the connection between the two. At the same time, the conductive meson 8 and the elastic member 9 are designed to be conductive, which can realize the elastic and conductive mechanical connection between the controller 10 and the stator winding 16, replacing the traditional technical means of rigid connection using solder wire welding, which is easy and safe to operate, and avoids the defects of "false welding", high temperature danger, and generation of toxic gas and exhaust gas existing in traditional technical means.

[0121] In addition, the elastic connection design between the controller 10 and the stator winding 16 enables the controller 10 to have the ability to adjust axially, so that the power module components 5 on the controller 10 can use the rigid heat dissipation structure 14 for conduction heat dissipation, replacing the traditional technical means of using flexible media to conduct heat for heat dissipation. The thermal conductivity of the rigid heat dissipation structure 14 is usually relatively large. For example, the thermal conductivity of aluminum alloy can be as high as 150-210W / (m·K). Compared with the traditional technical means of using flexible media with a thermal conductivity of less than 5W / (m·K) for conduction heat dissipation, the heat dissipation capacity of the motor is greatly improved, and the performance of the motor is improved.

[0122] As mentioned above, the aforementioned conductive medium 8 and elastic member 9 form an elastic electrical structure 11. The elastic electrical design of the present invention ensures that the controller 10 and the elastic electrical structure 11 are assembled in a non-free state, and the stopper 822 forms an axial upward limit for the controller 10, and the overall structure is stable and reliable. At the same time, by processing the operating hole 83, that is, shifting the hook 82 to the inside of the U-shaped groove 81, the controller 10 can be disassembled. The present invention also ensures that there is an elastic space I between the controller 10 and the stator assembly 17. At the same time, the design of the end cover 13 can enable the rigid heat dissipation structure 14 and the power module components 5 to be accurately positioned, and at the same time, it is assembled with the elastic electrical structure 11 in the elastic space I, ensuring that the rigid heat dissipation structure 14 and the power module components 5 are fully in contact with each other for heat dissipation, and at the same time, the heat can be directly conducted to the outside of the motor.

[0123] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0124] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A controller component, characterized in that: The invention comprises a controller (10), a conductive meson (8) and an elastic member (9); the controller (10) is elastically connected to the conductive meson (8) via the elastic member (9); and the controller (10) is electrically connected to the conductive meson (8), so that the controller (10) can be electrically connected to external components via the conductive meson (8).

2. The controller assembly according to claim 1, characterized in that: The conductive meson (8) has a first connecting portion (85), and the controller (10) has a second connecting portion (104); the elastic member (9) is arranged between the first connecting portion (85) and the second connecting portion (104) so ​​as to elastically connect the controller (10) to the conductive meson (8) by cooperating with the first connecting portion (85) and the second connecting portion (104).

3. The controller assembly according to claim 2, characterized in that: One end of the elastic member (9) contacts the first connecting portion (85), and the other end contacts the second connecting portion (104).

4. The controller assembly according to claim 2 or 3, characterized in that: The first connecting part (85) is made of a conductive material and is electrically connected to the conductive medium (8); the elastic member (9) is also made of a conductive material, and the second connecting part (104) is provided with a conductive layer (103), and the second connecting part (104) is in contact with the elastic member (9) through the conductive layer (103), so that the conductive layer (103) and the elastic member (9) are electrically connected; wherein the first connecting part (85), the elastic member (9) and the conductive layer (103) form a conductive flow path, and the controller (10) is electrically connected to the conductive medium (8) through the conductive flow path.

5. The controller assembly according to any one of claims 1 to 3, characterized in that: The conductive particle (8) has a first end (801) and a second end (802) opposite to each other, and the conductive particle (8) is electrically connected to an external component via the second end (802); the first end (801) has a stopper (822), and the controller (10) has a through hole (102) passing through both sides, and the conductive particle (8) is used to pass through the through hole (102), and the controller (10) is stopped and limited by the stopper (822) to prevent the controller (10) from escaping from the first end (801).

6. The controller assembly according to claim 5, characterized in that: The first end (801) has an elastic arm (821), and the stopper (822) is arranged at the end of the elastic arm (821); the elastic arm (821) has an initial state and a deformation state in which the elastic arm (821) is driven to deform; wherein, when the elastic arm (821) is in the deformation state, the elastic arm (821) can drive the stopper (822) to pass through or exit the through hole (102); when the elastic arm (821) is in the initial state and passes through the through hole (102), the stopper (822) can stop and limit the controller (10).

7. The controller assembly according to claim 6, characterized in that: The width of the through hole (102) is Be, the elastic arm (821) and the stopper (822) together form a hook (82), and the thickness of the hook (82) is Hb, wherein Hb<Be<Hb+Hb / 4.

8. The controller assembly according to claim 6, characterized in that: The elastic arm (821) and the stopper (822) together form a hook (82); the number of the hooks (82) is two and they are symmetrically arranged; the two hooks (82) are arranged at intervals; the interval width between the two hooks (82) is Bd; the maximum distance between the stoppers (822) on the two hooks (82) is Ba; the maximum distance between the elastic arms (821) on the two hooks (82) is Bc; the length of the via (102) is La, wherein Bc+Bd<La<Ba.

9. The controller assembly according to any one of claims 6 to 8, characterized in that: When the conductive element (8) has a first connection part (85), the controller (10) has a second connection part (104), and the elastic member (9) is arranged between the first connection part (85) and the second connection part (104) so ​​as to elastically connect the controller (10) to the conductive element (8) by cooperating with the first connection part (85) and the second connection part (104), the first connection part (85) is protruded on the side wall between the two ends of the conductive element (8), and the controller (10) has a first area 10a opposite to the first connection part (85), and the first area 10a serves as the second connection part (104).

10. The controller assembly according to claim 9, characterized in that: The first connecting portion (85) is provided with a first groove (84) for accommodating one end of the elastic member (9); And / or, the first area 10a is provided with a second groove (101) for accommodating the other end of the elastic member (9); And / or, the elastic member (9) has an inner hole (91), and the elastic member (9) is sleeved on the conductive meson (8) through the inner hole (91).

11. The controller assembly according to claim 10, characterized in that: When the elastic member (9) has an inner hole (91), the elastic member (9) is sleeved on the conductive meson (8) through the inner hole (91), and the elastic arm (821) and the stopper (822) form a hook (82), the number of the hooks (82) is two and they are symmetrically arranged, when the two hooks (82) are arranged at intervals, the interval width between the two hooks (82) is Bd, the maximum distance between the stoppers (822) on the two hooks (82) is Ba, the portion of the conductive meson (8) on which the elastic member (9) is sleeved is taken as the first section (86), the maximum width of the first section (86) is Bc, the aperture of the inner hole (91) is De, wherein Bd=Ba / 4=Bc / 2, Bc<De<3Bc / 2.

12. The controller assembly according to claim 10, characterized in that: When the first region 10a is provided with a second groove (101) for accommodating the other end of the elastic member (9), and the elastic member (9) has an inner hole (91), when the elastic member (9) is sleeved on the conductive meson (8) through the inner hole (91), the outer diameter of the elastic member (9) is Db, the aperture of the inner hole (91) is De, and the slot diameter of the second groove (101) is Df; wherein Db<Df<Db+(Db-De) / 2.

13. The controller assembly according to claim 10, characterized in that: When the first region 10a is provided with a second groove (101) for accommodating the other end of the elastic member (9), the groove depth of the second groove (101) is Hc, and the thickness of the controller (10) is Hd, wherein Hd / 3<Hc<Hd / 2.

14. The controller assembly according to claim 10, characterized in that: When the first connecting portion (85) is provided with a first groove (84) for accommodating one end of the elastic member (9), and the first area 10a is provided with a second groove (101) for accommodating the other end of the elastic member (9), the via hole (102) is arranged on the bottom surface of the second groove (101), the distance between the stopper (822) and the bottom surface of the first groove (84) is Ha, the height of the elastic member (9) in a free state is He, the groove depth of the second groove (101) is Hc, and the thickness of the controller (10) is Hd; wherein Hd-Hc<Ha-He<0.

15. A motor, characterized in that: It comprises a stator winding 16 and a controller component as described in any one of claims 1 to 14; wherein the stator winding 16 serves as the external component, so that the controller (10) is electrically connected to the stator winding 16 through the conductive medium (8).

16. The motor according to claim 15, characterized in that: The controller (10) can move relative to the conductive medium (8) along a first direction (m) to apply force to the elastic member (9) so as to cause the elastic member (9) to deform; The controller (10) is provided with a power module component (5), and the power module component (5) has a first surface (51) located on the upstream side of the first direction (m); the motor further comprises an end cover (13), and a rigid heat dissipation structure (14) is provided on the end cover (13), and the end cover (13) is in contact with the first surface (51) through the rigid heat dissipation structure (14).

17. The motor according to claim 16, characterized in that: The motor has a first a-end (20) and a second a-end (21) opposite to each other, the end cover (13) has the first a-end (20), and the first direction (m) is the direction from the first a-end (20) to the second a-end (21) in the axial direction of the motor.

18. The motor according to claim 16 or 17, characterized in that: The rigid heat dissipation structure (14) is arranged on the outer side of the end cover (13), and the outer side is provided with a mounting hole (122) that penetrates to the inner side of the end cover (13); wherein a protrusion (121) is provided on the rigid heat dissipation structure (14), and the protrusion (121) is used to pass through the mounting hole (122), and the rigid heat dissipation structure (14) contacts the first surface (51) through the protrusion (121).

19. The motor according to any one of claims 15 to 17, characterized in that: The invention comprises a stator assembly (17), wherein the stator assembly (17) has the stator winding 16, and when the conductive element (8) has a first connection portion (85), the conductive element (8) has a first end (801) and a second end (802) opposite to each other, the first connection portion (85) is protrudingly arranged on the side wall between the two ends of the conductive element (8), and the conductive element (8) is electrically connected to an external component via the second end (802), the stator assembly (17) is provided with a relief groove (174), and an electrical connection hole for inserting the second end (802) is arranged on the bottom surface of the relief groove (174), and the second end (802) is electrically connected to the stator winding 16 via the electrical connection hole; wherein the relief groove (174) is used to accommodate the first connection portion (85).

20. The motor according to claim 19, characterized in that: When the first connecting portion (85) is provided with a first groove (84) for accommodating one end of the elastic member (9), the groove diameter of the first groove (84) is Da, and the groove diameter of the avoidance groove (174) is Df1, wherein Df1>Da; And / or, when the controller (10) has a second connecting portion (104), and the elastic member (9) is arranged between the first connecting portion (85) and the second connecting portion (104), so as to elastically connect the controller (10) to the conductive meson (8) by cooperating with the first connecting portion (85) and the second connecting portion (104), and the controller (10) has a first area 10a opposite to the first connecting portion (85), the first area 10a serves as the second connecting portion (104), and the first connecting portion (85) is provided with a first groove (84) for accommodating one end of the elastic member (9), and the first area 10a is provided with a first groove (84) for accommodating the elastic member (9). The second groove (101) is formed at the other end of the component (9), and the first end (801) has a stopper (822), the controller (10) has a through hole (102) running through both sides, the conductive particle (8) is used to pass through the through hole (102), and the controller (10) is stopped and limited by the stopper (822) to prevent the controller (10) from escaping from the first end (801), the distance between the stopper (822) and the bottom surface of the first groove (84) is Ha, the depth of the avoidance groove (174) is Hg, the thickness of the controller (10) is Hd, and the groove depth of the second groove (101) is Hj, wherein 0<Hg<Ha-Hj-Hd.

21. The motor according to claim 19, characterized in that: The stator assembly (17) has an open slot (175), the avoidance slot (174) is arranged on the bottom surface of the open slot (175), the depth of the open slot (175) is Hn, the height of the power module component (5) is Ho, the thickness of the controller (10) is Hd, the side of the controller (10) opposite to the end cover (13) is the second side (10b), the maximum distance between the second side (10b) and the inner side surface of the end cover (13) is Hp, and the maximum distance between the first side (51) and the inner side surface of the end cover (13) is Hk, wherein Hp-Ho<Hk<Hn-Hd-Ho.

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