Split mounting type high-energy-density frameless motor

Abstract

The invention belongs to the technical field of motors, and particularly relates to a split mounting type high-energy-density frameless motor which comprises a stator and a rotor. The stator drives the rotor to rotate through an electromagnetic effect, and the stator comprises a plurality of winding assembling units; the winding assembling units are assembled and surrounded into a whole through a fixing device, and the fixing device comprises a connecting assembly and an inserting piece assembly; the connecting assemblies are arranged around the stator in the circumferential direction, and the inserting piece assemblies can penetrate through the winding assembling units to be in coupling connection with the connecting assemblies so as to fix the winding assembling units. A plurality of winding assembly units are arranged to be assembled and surrounded into a whole through the fixing device, each winding assembly unit is independently wound, the winding number of the enameled wire group can be increased, the energy density is increased, and the problems that winding is directly and continuously conducted on an iron core frame traditionally, winding precision is low, the number of enameled wire winding groups is insufficient, the barrel filling rate is low, and the winding efficiency is low are solved. And the energy density of the frameless motor is small.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to an assembled high-energy-density frameless motor. Background Art

[0002] An electric motor, commonly known as a "motor", refers to an electromagnetic device that realizes electrical energy conversion or transmission based on the law of electromagnetic induction. It includes framed motors and frameless motors. The frameless motor is a new type of torque motor. Because it abandons the outer casing of a traditional motor, it has the advantages of small size, light weight, low inertia, compact structure, and high power. It has strong adaptability and is mainly used in robot joints, medical robots, sensor universal joints, UAV propulsion and guidance systems, and other fields.

[0003] Existing frameless motors, such as a high-torque frameless motor for humanoid robots with publication number CN117856527B, include a frameless motor, a fixing mechanism and a reduction mechanism, wherein the input end of the reduction mechanism is connected to the output end of the frameless motor, and the output end of the reduction mechanism is connected to the fixing mechanism; the motor is an inner rotor frameless motor, including a stator, a limited position frame is fixedly arranged on the stator, and a rotor coaxial with the stator is rotatably installed in the stator; the reduction mechanism includes a driving wheel, a transmission chain, a driven wheel and a gear ring, and the driving wheel is elliptical and fixedly installed on the rotor. By installing a driving wheel on the rotor of the inner rotor frameless motor, and connecting the rotor with the driven wheel and the fixing structure through a bearing, the driven wheel can be fixedly connected to the input shaft of the load by using the fixing mechanism, and the transmission chain can be meshed with the driving wheel and the driven wheel to achieve reduction transmission, so as to reduce the rotation speed and increase the torque of the motor.

[0004] The above-mentioned existing frameless motor has a low energy density and cannot meet the motor requirements of the robot, so we want to increase the energy density, that is, increase the winding of the enameled wire group. The existing frameless motor is directly and continuously wound on the iron core frame. The domestic winding machine is not precise enough in continuous winding accuracy, the number of enameled wire groups is insufficient, and the barrel filling rate is insufficient, resulting in a low energy density of the frameless motor. Summary of the invention

[0005] The purpose of the present invention is to provide an assembled high energy density frameless motor, aiming to solve the technical problem of low energy density of the above-mentioned existing frameless motors.

[0006] To achieve the above-mentioned purpose, an embodiment of the present invention provides an assembled high-energy density frameless motor, comprising a stator and a rotor; the stator drives the rotor to rotate through electromagnetic action, and the stator comprises a plurality of winding assembly units; each of the winding assembly units is assembled and surrounded into a whole by a fixing device, and the fixing device comprises a connecting component and a plug-in component; the connecting component is arranged circumferentially around the stator, and the plug-in component can pass through each of the winding assembly units to couple with the connecting component to fix each of the winding assembly units.

[0007] Optionally, each of the winding assembly units includes a wire rack and an enameled wire group; the enameled wire group is wound on the wire rack, the wire rack is an "I"-shaped structure, and the wire rack includes an inwardly recessed winding portion; the enameled wire group is wound on the winding portion, and an insert channel is provided in the middle of the wire rack, and the insert channel is used for the insert assembly to pass through.

[0008] Optionally, the connecting component is formed by stacking multiple groups of connecting plates up and down, each group of connecting plates includes a combined round plate and multiple combined single plates; the multiple combined single plates are evenly arranged on the combined round plate, and multiple first grooves are provided on the combined round plate, each first groove is provided between two combined single plates, and an insertion gap is also formed between the two combined single plates, at least one first positioning hole is provided between the two first grooves, and at least one second positioning hole is correspondingly provided on each combined single plate, and the number of the second positioning holes in each group of connecting plates is consistent with the number of the first positioning holes.

[0009] Optionally, the plug-in assembly includes multiple groups of plug-in pieces; each group of the plug-in pieces includes a long plug-in piece and a short plug-in piece; the long plug-in piece and the short plug-in piece are stacked and connected up and down, and the long plug-in piece and the short plug-in piece are both provided with functional connection points; each winding assembly unit can be penetrated by multiple groups of the plug-in pieces, and each group of the plug-in pieces passes through the plug-in piece channel and is connected to the connecting piece; the long plug-in piece and the short plug-in piece in each group of the plug-in pieces are provided with corresponding third positioning holes.

[0010] Optionally, the number of the insert pieces inserted into each of the winding assembly units corresponds to the number of the connecting pieces, the long insert pieces in each group of the insert pieces can be inserted into the corresponding insertion gaps and connected to the connecting pieces, the short insert pieces in each group of the insert pieces can abut against the side walls of the corresponding combined discs and be connected to the connecting pieces, each of the long insert pieces is provided with a second groove, and after each of the long insert pieces is inserted into the corresponding insertion gaps, the multiple first grooves and the multiple second grooves arranged up and down can form a groove channel.

[0011] Optionally, a first blocking portion and a second blocking portion are provided at both ends of the winding portion, and two protrusions are symmetrically provided on the first blocking portion, and the two protrusions are provided on both sides of the insertion channel, and a third groove is provided on each of the protrusions, and the third groove is provided corresponding to the position of the groove channel; glue injection grooves are respectively provided on the upper and lower sides of each of the insertion channels, and one end of each glue injection groove is connected to the third groove, and the other end is extended to the third positioning hole.

[0012] Optionally, the multiple first positioning holes and the multiple second positioning holes corresponding to each other above and below can be sealed and reinforced by glue pouring, the multiple third positioning holes corresponding to each other above and below can be sealed and reinforced by glue pouring, and the two third grooves in the same wire rack and the corresponding groove channels can be welded.

[0013] Optionally, the plurality of first positioning holes and the plurality of second positioning holes corresponding to each other up and down may be provided with metal shafts for fixing, and the plurality of third positioning holes corresponding to each other up and down may be sealed and reinforced by glue filling.

[0014] Optionally, the frameless motor is an inner rotor structure, the rotor is coaxially arranged inside the stator, and the rotor includes a rotor core; a plurality of permanent magnets are fixed on the outer ring surface of the rotor core.

[0015] Optionally, the frameless motor is an outer rotor structure, the stator is coaxially disposed inside the rotor, and the rotor includes a rotor core; a plurality of permanent magnets are fixed on the inner annular surface of the rotor core.

[0016] Compared with the prior art, the above one or more technical solutions in the assembled high energy density frameless motor provided by the embodiment of the present invention have at least one of the following technical effects:

[0017] A plurality of winding assembly units are arranged and assembled into a whole through a fixing device. Each winding assembly unit is wound separately, which can increase the number of winding coils of the enameled wire group and increase the energy density. This solves the problems of traditional continuous winding directly on the core frame, low winding accuracy, insufficient number of enameled wire winding groups, low barrel filling rate, and low energy density of frameless motors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a schematic diagram of the connecting piece structure of the present invention.

[0021] Figure 3 It is a partial structural schematic diagram of the present invention.

[0022] Figure 4 It is a partial structural schematic diagram of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the insert piece of the present invention.

[0024] Figure 6 It is a schematic diagram of the wire rack structure of the present invention.

[0025] Figure 7 This is a schematic diagram of the inner rotor structure of Example 1 of the present invention.

[0026] Figure 8 This is a schematic diagram of the outer rotor structure of Example 2 of the present invention.

[0027] Among them, the reference numerals in the figure are:

[0028] 100, stator; 110, winding assembly unit; 111, wire rack; 1111, winding part; 1112, first blocking part; 1113, second blocking part; 1114, convex piece; 1115, third groove; 1116, glue insertion groove; 1117, inserting channel; 112, enameled wire group; 120, connecting piece; 121, combined round piece; 122, combined single piece; 123, first groove; 124, insertion gap; 125, first positioning hole; 126, second positioning hole; 130, inserting piece; 131, long inserting piece; 1311, second groove; 132, short inserting piece; 133, functional connection point; 134, third positioning hole; 140, groove channel;

[0029] 200, rotor; 210, rotor core; 220, permanent magnet. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0034] Example 1

[0035] according to Figure 1-7 As shown, it includes a stator 100 and a rotor 200; the stator 100 drives the rotor 200 to rotate through electromagnetic action, and the stator 100 includes a plurality of winding assembly units 110; each winding assembly unit 110 is assembled and surrounded into a whole by a fixing device, and the fixing device includes a connecting component and a plug-in component; the connecting component is circumferentially arranged around the stator 100, and the plug-in component can pass through each winding assembly unit 110 to couple with the connecting component to fix each winding assembly unit 110.

[0036] Specifically, a plurality of winding assembly units 110 are assembled and surrounded into a whole through a fixing device, and each winding assembly unit 110 is wound separately, which can increase the number of winding coils of the enameled wire group 112 and increase the energy density, thereby solving the problems of low winding precision, insufficient number of enameled wire winding groups, low barrel filling rate, and low energy density of frameless motors in the traditional continuous winding directly on the core frame. By arranging the connection assembly and the insert assembly to assemble the winding assembly units 110 with a high barrel filling rate, the structure is stable and has high strength.

[0037] Furthermore, most of the conventional assembled stators 100 are assembled by snap-on method, and the winding method is still to wind in multiple groups and then assemble. The energy density of the winding is low, and it is impossible to wind in a single winding assembly unit and then assemble.

[0038] according to Figure 1 and 6 As shown, each winding assembly unit 110 includes a wire rack 111 and an enameled wire group 112; the enameled wire group 112 is wound on the wire rack 111, the wire rack 111 is an "I"-shaped structure, and the wire rack 111 includes an inwardly recessed winding portion 1111; the enameled wire group 112 is wound on the winding portion 1111, and an insert channel 1117 is provided in the middle of the wire rack 111, and the insert channel 1117 is used for the insert assembly to pass through.

[0039] Specifically, the "I"-shaped structure is stable and easier to wind. The inwardly concave winding part leaves space for the winding of the enameled wire group 112. At the same time, the winding precision is high, the arrangement is tight and neat, and the barrel filling rate is high, so that the energy density of a single coil is large. The middle part of the wire rack 111 is hollowed out, and a plug-in channel 1117 for the plug-in assembly to pass through is provided. It can be understood that the plug-in assembly has one end large and one end small, and the small end can pass through the plug-in channel 1117, and the large end is limited and clamped to prevent the enameled wire group 112 and the wire rack 111 from falling off after winding.

[0040] according to Figure 2-4 As shown, the plug assembly includes a plurality of long plugs 131 and a plurality of short plugs 132; each winding assembly unit 110 can be stacked up and down and penetrated with a plurality of the long plugs 131 and a plurality of the short plugs 132, and each of the long plugs 131 and each of the short plugs 132 passes through the plug channel 1117 to connect with the connection assembly. The connection assembly is formed by stacking multiple layers of combined circular sheets 121 and multiple layers of combined sheets up and down, and each layer of the combined sheets includes a plurality of combined single sheets 122, and an insertion gap is formed between each of the combined single sheets 122.

[0041] Specifically, the combination disc 121 and the combination sheet can be arranged crosswise with each other, for example, one layer of combination disc 121 and one layer of combination sheet, and this cycle is preferred, or two layers of combination disc 121 and one layer of combination sheet can be arranged in this cycle, or one layer of combination disc 121 and two layers of combination sheet can be arranged in this cycle, all of which are within the protection scope of the present invention. It can be understood that the long plug 131 is used to insert the combination sheet for connection, and the short plug 132 is used to abut the combination disc 121 for connection, and the corresponding combination is a combination of different long plugs 131 and short plugs 132, such as one long plug 131 and one short plug 132, and this cycle, such as two long plugs 131 and one short plug 132, and this cycle, such as one long plug 131 and two short plugs 132 and this cycle, and there are many other combinations. The combination of the insertion component and the connection component corresponds to each other.

[0042] according to Figure 2-4 As shown, the connection assembly is composed of multiple groups of connection sheets 120 stacked up and down, each group of connection sheets 120 includes a combined disc 121 and multiple combined single sheets 122; multiple combined single sheets 122 are evenly arranged on the combined disc 121, and multiple first grooves 123 are provided on the combined disc 121, each first groove 123 is provided between two combined single sheets 122, and an insertion gap 124 is also formed between the two combined single sheets 122, at least one first positioning hole 125 is provided between the two first grooves 123, and at least one second positioning hole 126 is correspondingly provided on each combined single sheet 122, and the number of second positioning holes 126 in each group of connection sheets 120 is consistent with the number of first positioning holes 125.

[0043] Specifically, in each group of connecting pieces 120, the combined disc 121 is at the bottom, and a plurality of combined single pieces 122 are arranged on the combined disc 121. The multiple groups of connecting pieces 120 are stacked up and down in sequence to form a connecting assembly. There are two first positioning holes 125 between the two first grooves 123, and there are also two corresponding second positioning holes 126 for each combined single piece 122. The first positioning holes 125 and the second positioning holes 126 are used for installation positioning and sealing glue.

[0044] according to Figure 3-6As shown, the plug-in assembly includes multiple groups of plug-in pieces 130; each group of plug-in pieces 130 includes a long plug-in piece 131 and a short plug-in piece 132; the long plug-in piece 131 and the short plug-in piece 132 are stacked and connected up and down, and functional connection points 133 are provided on the long plug-in piece 131 and the short plug-in piece 132; each winding assembly unit 110 can be penetrated by multiple groups of plug-in pieces 130, and each group of plug-in pieces 130 is connected to the connecting piece 120 through the plug-in channel 1117; corresponding third positioning holes 134 are provided on the long plug-in piece 131 and the short plug-in piece 132 in each group of plug-in pieces 130. The number of the insert pieces 130 inserted into each winding assembly unit 110 corresponds to the number of the connecting pieces 120. The long insert pieces 131 in each group of insert pieces 130 can be inserted into the corresponding insertion gaps 124 and connected to the connecting pieces 120. The short insert pieces 132 in each group of insert pieces 130 can abut against the side walls of the corresponding combined circular pieces 121 and be connected to the connecting pieces 120. A second groove 1311 is provided on each long insert piece 131. After each long insert piece 131 is inserted into the corresponding insertion gaps 124, the multiple first grooves 123 and the multiple second grooves 1311 arranged up and down can form a groove channel 140.

[0045] Specifically, each group of insert pieces 130 has a short insert piece 132 at the bottom and a long insert piece 131 at the top, and the two are stacked and connected to each other. The insert pieces 130 just correspond to the connecting piece 120. The long insert piece 131 in each group of insert pieces 130 can be inserted into the corresponding insertion gap 124 to connect with the connecting piece 120, and the short insert piece 132 in each group of insert pieces 130 can abut against the side wall of the corresponding combination round piece 121 to connect with the connecting piece 120. The long insert piece 131 and the short insert piece 132 are each provided with a clamping portion at one end, and the other end is shorter than the clamping portion, which is used to pass through the insert piece channel 1117, and the clamping portion is clamped on the enameled wire group 112. Multiple groups of insert pieces 130 can just completely fill the insert piece channel 1117.

[0046] Furthermore, the third positioning hole 134 is used for installation positioning and sealing glue, and the functional connection point 133 is used for vertical connection between each long plug piece 131 and each short plug piece 132.

[0047] according to Figure 6 As shown, a first blocking portion 1112 and a second blocking portion 1113 are provided at both ends of the winding portion 1111, two protrusions 1114 are symmetrically provided on the first blocking portion 1112, and the two protrusions 1114 are provided on both sides of the insert channel 1117, and a third groove 1115 is provided on each protrusion 1114, and the third groove 1115 is provided at a position corresponding to the groove channel 140; glue injection grooves 1116 are respectively provided on the upper and lower sides of each insert channel 1117, and one end of each glue injection groove 1116 is connected to the third groove 1115, and the other end is extended to the third positioning hole 134.

[0048] Specifically, the first blocking portion 1112 and the second blocking portion 1113 are used to prevent the enameled wire group 112 from falling off after winding, and the third groove 1115 is provided for welding with the groove channel 140, so that the wire rack 111 and the fixing device can be connected as a whole, and the structural strength is better. The upper and lower sides of each insert channel 1117 are respectively provided with glue injection grooves 1116, and glue can be injected at the third groove 1115 under vacuum conditions, and the glue can flow into the third positioning hole 134 through the glue injection grooves 1116 for injection.

[0049] according to Figure 1-6 As shown, the multiple first positioning holes 125 and the multiple second positioning holes 126 corresponding to the upper and lower parts can be sealed and reinforced by glue pouring, the multiple third positioning holes 134 corresponding to the upper and lower parts can be sealed and reinforced by glue pouring, and the two third grooves 1115 in the same wire rack 111 and the corresponding groove channels 140 can be welded.

[0050] In another embodiment, the multiple first positioning holes 125 and the multiple second positioning holes 126 corresponding to each other can be fixed by passing metal shafts, and the multiple third positioning holes 134 corresponding to each other can be reinforced by filling glue and sealing.

[0051] Specifically, the metal shaft is inserted and the welding process is performed on the third groove 1115 and the groove channel 140 to increase the connection strength, making the overall strength stronger.

[0052] according to Figure 7 As shown, the frameless motor has an inner rotor 200 structure, the rotor 200 is coaxially arranged inside the stator 100, and the rotor 200 includes a rotor core 210; a plurality of permanent magnets 220 are fixed on the outer ring surface of the rotor core 210. Specifically, the inner rotor 200 structure has a high speed, good heat dissipation, and is easy to install.

[0053] Example 2

[0054] according to Figure 8 As shown, the frameless motor is an outer rotor structure, the stator 100 is coaxially arranged inside the rotor 200, and the rotor 200 includes a rotor core 210; a plurality of permanent magnets 220 are fixed on the inner ring surface of the rotor core 210. Specifically, the outer rotor 200 structure has a large rotor diameter, high torque output, and a compact structure.

[0055] The above content is a further detailed description of the present invention in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, its architecture can be flexible and can derive a series of products. Just making a few simple deductions or substitutions should be regarded as belonging to the scope of patent protection of the present invention determined by the submitted claims.

Claims

1. An assembled high energy density frameless motor, characterized in that: It includes a stator and a rotor; the stator drives the rotor to rotate through electromagnetic action, and the stator includes a plurality of winding assembly units; each winding assembly unit is assembled and surrounded into a whole by a fixing device, and the fixing device includes a connecting component and a plug-in component; the connecting component is arranged circumferentially around the stator, and the plug-in component can pass through each winding assembly unit to be coupled and connected with the connecting component to fix each winding assembly unit.

2. The assembled high energy density frameless motor according to claim 1, characterized in that: Each of the winding assembly units includes a wire rack and an enameled wire group; the enameled wire group is wound on the wire rack, the wire rack is an "I"-shaped structure, and the wire rack includes an inwardly recessed winding portion; the enameled wire group is wound on the winding portion, and an insert channel is provided in the middle of the wire rack, and the insert channel is used for the insert assembly to pass through.

3. The assembled high energy density frameless motor according to claim 2, characterized in that: The connecting assembly is composed of multiple groups of connecting sheets stacked up and down, each group of connecting sheets includes a combined round sheet and multiple combined single sheets; the multiple combined single sheets are evenly arranged on the combined round sheet, and multiple first grooves are provided on the combined round sheet, each of the first grooves is provided between two of the combined single sheets, and an insertion gap is also formed between the two combined single sheets, at least one first positioning hole is provided between the two first grooves, and at least one second positioning hole is correspondingly provided on each of the combined single sheets, and the number of the second positioning holes in each group of connecting sheets is consistent with the number of the first positioning holes.

4. The assembled high energy density frameless motor according to claim 3, characterized in that: The plug-in piece assembly includes multiple groups of plug-in pieces; each group of the plug-in pieces includes a long plug-in piece and a short plug-in piece; the long plug-in piece and the short plug-in piece are stacked and connected up and down, and the long plug-in piece and the short plug-in piece are both provided with functional connection points; each winding assembly unit can be penetrated by multiple groups of the plug-in pieces, and each group of the plug-in pieces passes through the plug-in piece channel and is connected to the connecting piece; the long plug-in piece and the short plug-in piece in each group of the plug-in pieces are both provided with corresponding third positioning holes.

5. The assembled high energy density frameless motor according to the discharge pipe of claim 4, characterized in that: The number of the insert pieces inserted into each of the winding assembly units corresponds to the number of the connecting pieces. The long insert pieces in each group of the insert pieces can be inserted into the corresponding insertion gaps and connected to the connecting pieces. The short insert pieces in each group of the insert pieces can abut against the side walls of the corresponding combined discs and be connected to the connecting pieces. A second groove is provided on each of the long insert pieces. After each of the long insert pieces is inserted into the corresponding insertion gaps, the multiple first grooves and the multiple second grooves arranged above and below can form a groove channel.

6. The assembled high energy density frameless motor according to claim 5, characterized in that: A first blocking portion and a second blocking portion are provided at both ends of the winding portion, two protrusions are symmetrically provided on the first blocking portion, the two protrusions are provided on both sides of the insert channel, a third groove is provided on each of the protrusions, and the third groove is provided corresponding to the position of the groove channel; glue injection grooves are respectively provided on the upper and lower sides of each of the insert channel, one end of each of the glue injection grooves is connected to the third groove, and the other end is extended to the third positioning hole.

7. The assembled high energy density frameless motor according to claim 6, characterized in that: The multiple first positioning holes and the multiple second positioning holes corresponding to each other above and below can be sealed and reinforced by glue pouring, the multiple third positioning holes corresponding to each other above and below can be sealed and reinforced by glue pouring, and the two third grooves in the same wire rack and the corresponding groove channels can be welded.

8. The assembled high energy density frameless motor according to claim 6, characterized in that: The plurality of the first positioning holes and the plurality of the second positioning holes corresponding to each other up and down can be fixed by passing metal shafts, and the plurality of the third positioning holes corresponding to each other up and down can be sealed and reinforced by filling with glue.

9. The assembled high energy density frameless motor according to claim 1, characterized in that: The frameless motor is an inner rotor structure. The rotor is coaxially arranged inside the stator. The rotor includes a rotor core. A plurality of permanent magnets are fixed on the outer ring surface of the rotor core.

10. The assembled high energy density frameless motor according to claim 1, characterized in that: The frameless motor is an outer rotor structure, the stator is coaxially arranged inside the rotor, and the rotor includes a rotor core; a plurality of permanent magnets are fixed on the inner ring surface of the rotor core.

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