Outer rotor starting and starting integrated motor

Abstract

The utility model discloses an outer rotor starting and starting integrated motor, which comprises a rotor assembly, and a stator assembly, a rotary transformer stator and a rotary transformer rotor which are arranged in the rotor assembly in a matching way, the rotor assembly comprises a shell and magnetic steel, and a shaft hole is formed in the middle of the end surface of the shell and is used for being connected with a rotating shaft of an engine; the inner side of the end face of the shell is further provided with an annular connecting part, and the rotary transformer rotor is arranged on the outer side wall of the connecting part in a sleeving mode. The stator assembly comprises a stator support, a stator iron core is installed on the stator support, a plurality of coils are wound on the stator iron core, and the rotary transformer stator is arranged on the inner side wall of the stator support; protruding parts are formed on the periphery of the rotary transformer rotor in the circumferential direction at intervals, and a concave part is formed between every two adjacent protruding parts. The motor provided by the utility model not only has a power generation function, but also can be used as a starting motor to start an engine, and can be widely applied to a generator set or other equipment of an engine configuration without an electric starting function.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor structure technical field more particularly, relate to a kind of outer rotor inspires integrated motor. BACKGROUND

[0002] Like traditional electrically excited synchronous generator, outer rotor permanent magnet generator is composed of stator and rotor. Stator refers to the part that is fixed when generator operates, mainly composed of silicon steel sheet, three-phase Y type connection's armature winding that is symmetrically distributed in stator slot and mutually 120 ° electric angle, fixed iron core's machine shell and end cover etc. Rotor refers to the rotating part when generator operates, usually composed of rotor iron core, permanent magnet magnetic steel, collar and rotor shaft.

[0003] Compared with traditional electrically excited synchronous generator, permanent magnet synchronous generator has the advantages of simple structure, small size, high efficiency and high reliability.

[0004] At present, outer rotor permanent magnet generator is mostly used in small, portable mobile generator set. As generator, it does not have the ability to start engine. SUMMARY

[0005] Therefore, the utility model aims at providing an outer rotor inspires integrated motor to solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] An outer rotor inspires integrated motor, comprising a rotor assembly and a stator assembly, a resolver stator and a resolver rotor installed in the rotor assembly, the rotor assembly comprising a shell and magnetic steel, a plurality of magnetic steel is circumferentially spaced apart on the inner side wall of the shell, the end face of the shell is provided with an axle hole in the middle, the axle hole is used for connecting with the rotating shaft of engine, the inner side of the end face of the shell is further provided with an annular connecting part, the resolver rotor is sleeved on the outer side wall of the connecting part;

[0008] The stator assembly comprises a stator support, the stator support is provided with a stator core, a plurality of coils are wound on the stator core, the resolver stator is arranged on the inner side wall of the stator support;

[0009] The outer periphery of the resolver rotor is circumferentially spaced apart to form a protruding part, a recessed part is formed between adjacent two protruding parts, a first air gap is formed between the protruding part and the inner side wall of the resolver stator, a second air gap is formed between the recessed part and the inner side wall of the resolver stator.

[0010] Further, the rotor assembly further comprises a magnetic steel fixing ring, which is attached to the inner side wall of the shell, and a plurality of magnetic steel mounting grooves are formed on the magnetic steel fixing ring in a circumferential direction.

[0011] Further, a flange is formed on the outer periphery of one end of the inner side of the magnetic steel fixing ring, and a magnetic steel fixing hole is formed on the flange corresponding to the two ends of each magnetic steel mounting groove.

[0012] Further, a plurality of heat dissipation openings are formed on the end face of the shell.

[0013] Further, a plurality of first connecting holes are formed on the edge of the stator support in a circumferential direction, and a plurality of second connecting holes are formed on the stator core corresponding to the first connecting holes.

[0014] Further, a weight-reducing hole is further formed on the stator support in a circumferential direction.

[0015] Further, a first step portion extending along the entire circumferential direction is further formed on the inner side wall of the stator support.

[0016] Further, a second step portion extending along the entire circumferential direction is formed on the outer peripheral side wall of the connecting portion.

[0017] The beneficial effects of the utility model lie in:

[0018] The external rotor starting integrated motor provided by the utility model can not only generate electricity, but also can start the engine as a starting motor, and can be widely applied to the generator set or other equipment which does not have the electric starting function and is configured with the engine; when in use, the external power supply controller is connected with the motor, the motor is inputted with the power supply, the internal resolver stator and resolver rotor are combined, so that the power supply controller can detect the initial position of the motor rotor assembly, and then the motor can be controlled to operate as a motor, so that the engine starting purpose is achieved; the overall structure is simple, the anti-interference performance is good, and the reliability is good. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the present application, and other embodiments can also be obtained by those skilled in the art according to these drawings.

[0020] Figure 1 It is the overall structure schematic diagram of the utility model.

[0021] Figure 2 It is the explosion structure schematic diagram of the utility model.

[0022] Figure 3 is the structure schematic view of the rotary transformer stator and the rotary transformer rotor in the utility model.

[0023] Figure 4 is the structure schematic view of the shell in the utility model.

[0024] Figure 5 is the structure schematic view of the magnetic steel fixing ring in the utility model.

[0025] Figure 6 is the structure schematic view of the stator support in the utility model.

[0026] Figure 7 is the structure schematic view of the stator support from another angle in the utility model.

[0027] Figure 8 is the structure schematic view of the stator core in the utility model.

[0028] Explanation of reference signs:

[0029] 1, rotor assembly;11, shell;111, shaft hole;112, connecting part;112a, second step part;113, heat dissipation opening;

[0030] 12, magnetic steel;13, magnetic steel fixing ring;131, magnetic steel mounting groove;132, flange;133, magnetic steel fixing hole;

[0031] 2, stator assembly;21, stator support;211, first connecting hole;212, weight reduction hole;213, first step part;

[0032] 22, stator core;221, second connecting hole;23, coil;

[0033] 3, rotary transformer stator;4, rotary transformer rotor;41, protruding part;42, recessed part;

[0034] 5, first air gap;6, second air gap. Specific implementation

[0035] The structure provided by the utility model is explained and described in detail in combination with the drawings of the specification.

[0036] Reference Figures 1 to 8As shown, the embodiment discloses an outer rotor start-up integrated motor, that is, the motor in the embodiment can operate as a generator and also as a motor to start the engine, which comprises a rotor assembly 1, a stator assembly 2, a resolver stator 3 and a resolver rotor 4 installed in the rotor assembly 1, the rotor assembly 1 comprises a shell 11 and a magnetic steel 12, a plurality of magnetic steels 12 are circumferentially spaced apart on the inner side wall of the shell 11, a shaft hole 111 is formed in the middle of the end face of the shell 11, the shaft hole 111 is used for connecting with the rotating shaft of the engine, and a ring-shaped connecting portion 112 is further arranged on the inner side of the end face of the shell 11, and the resolver rotor 4 is sleeved on the outer side wall of the connecting portion 112; in some preferred embodiments, a second stepped portion 112a extending along the entire circumference is formed on the outer peripheral side wall of the connecting portion 112, and the resolver rotor 4 is installed at the second stepped portion 112a, and the second stepped portion 112a can play an axial limiting effect to avoid axial movement of the resolver rotor 4.

[0037] The stator assembly 2 comprises a stator support 21, a stator core 22 is installed on the stator support 21, a plurality of coils 23 are wound on the stator core 22, and the resolver stator 3 is arranged on the inner side wall of the stator support 21; similarly, in some preferred embodiments, a first stepped portion 213 extending along the entire circumference is further formed on the inner side wall of the stator support 21, and the resolver stator 3 can be installed and fixed at the first stepped portion 213, and the first stepped portion 213 can also play an axial limiting effect to avoid axial movement of the resolver stator 3.

[0038] As shown, Figure 3 The outer peripheral of the resolver rotor 4 is circumferentially spaced apart to form a protruding portion 41, a recessed portion 42 is formed between adjacent two protruding portions 41, a first air gap 5 is formed between the protruding portion 41 and the inner side wall of the resolver stator 3 (i.e. the distance between the protruding portion 41 and the corresponding inner side wall of the resolver stator 3), and a second air gap 6 is formed between the recessed portion 42 and the inner side wall of the resolver stator 3 (i.e. the distance between the recessed portion 42 and the corresponding inner side wall of the resolver stator 3); it can be understood that the resolver stator 3 is also wound with coils (not shown in the figure), including field winding, sine winding and cosine winding, etc., for sensing the change of the air gap between the resolver stator and the resolver rotor, and then detecting the position information of the rotor assembly.

[0039] In use, an external power supply controller is connected with the motor to input power to the motor, and the resolver stator 3 and the resolver rotor 4 inside are combined to enable the power supply controller to detect the initial position of the motor rotor assembly 1, and then control the motor to operate as a motor to start the engine; the overall structure is simple, has good anti-interference performance and good reliability.

[0040] Further, in combination with Figure 5As shown, the rotor assembly 1 further comprises a magnetic steel fixing ring 13 attached to the inner side wall of the shell 11, a plurality of magnetic steel mounting grooves 131 are formed on the magnetic steel fixing ring 13 in a circumferential direction, and the magnetic steel 12 is mounted in the magnetic steel mounting groove 131; the magnetic steel 12 is fixed by the magnetic steel fixing ring 13, so that the magnetic steel 12 can be effectively fixed and prevented from loosening or falling off, and the stability of the overall structure is improved.

[0041] In some preferred embodiments, a flange 132 is formed on the outer periphery of one end of the inner side of the magnetic steel fixing ring 13, which facilitates assembly and connection with the shell 11, and a magnetic steel fixing hole 133 is formed on the flange 132 corresponding to the two ends of each magnetic steel mounting groove 131, and a connecting member such as a bolt is connected in the magnetic steel fixing hole 133, so that the magnetic steel 12 can be detachably connected, and the maintenance and replacement of the magnetic steel 12 are facilitated.

[0042] Continuing to refer to Figure 4 As shown, a plurality of heat dissipation openings 113 are formed on the end face of the shell 11, which is beneficial to heat conduction and heat dissipation, can reduce the temperature of the motor, reduce the efficiency of the motor caused by high temperature, and prolong the service life of the motor.

[0043] Referring to Figures 6 to 8 A plurality of first connecting holes 211 are formed on the edge of the stator support 21 in a circumferential direction, a plurality of second connecting holes 221 are formed on the stator core 22 corresponding to the first connecting holes 211, and the stator support 21 and the stator core 22 are detachably connected through the first connecting holes 211, the second connecting holes 221 and the bolts, which are stable in connection and convenient for maintenance.

[0044] In some embodiments, a weight reduction hole 212 is further formed on the stator support 21 in a circumferential direction, so as to reduce the overall weight of the motor, and the weight reduction hole 212 can also be used for wire passing to avoid messy lines.

[0045] In summary, the external rotor-starting integrated motor provided by the utility model not only has a power generation function, but also can be used as a starting motor to start an engine, and can be widely applied to a generator set or other equipment which does not have an electric starting function.

[0046] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0047] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In the description of the present application, the description of the terms "the embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in at least one embodiment or example. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0049] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0050] The above is only the preferred embodiment of the present application, and is not intended to limit the present application, any modification, equivalent replacement and simple improvement made on the essential content of the present application shall be included in the protection scope of the present application.

Claims

1. An outer rotor-inspired integrated motor, characterized by, The application relates to a resolver, which comprises a rotor assembly (1), a stator assembly (2) matchedly installed inside the rotor assembly (1), a resolver stator (3) and a resolver rotor (4), wherein the rotor assembly (1) comprises a shell (11) and magnetic steels (12), a plurality of the magnetic steels (12) are circumferentially spaced on the inner side wall of the shell (11), a shaft hole (111) is formed in the middle of the end face of the shell (11) and is used for connecting with the rotating shaft of an engine, and a ring-shaped connecting part (112) is further arranged on the inner side of the end face of the shell (11); the resolver rotor (4) is sleeved on the outer side wall of the connecting part (112). The stator assembly (2) comprises a stator support (21), a stator core (22) is arranged on the stator support (21), a plurality of coils (23) are arranged on the stator core (22), and the resolver stator (3) is arranged on the inner side wall of the stator support (21). The resolver rotor (4) is provided with a convex part (41) on the outer periphery, a concave part (42) is formed between two adjacent convex parts (41), a first air gap (5) is formed between the convex part (41) and the inner side wall of the resolver stator (3), and a second air gap (6) is formed between the concave part (42) and the inner side wall of the resolver stator (3).

2. An outer rotor-inspired integrated motor according to claim 1, characterized in that, The rotor assembly (1) further comprises a magnetic steel fixing ring (13), the magnetic steel fixing ring (13) is arranged on the inner side wall of the shell (11), a plurality of magnetic steel mounting grooves (131) are circumferentially spaced on the magnetic steel fixing ring (13), and the magnetic steels (12) are arranged in the magnetic steel mounting grooves (131).

3. An outer rotor-inspired integrated motor according to claim 2, wherein A flange (132) is formed on the outer periphery of one end of the inner side of the magnetic steel fixing ring (13), and a magnetic steel fixing hole (133) is formed on the flange (132) and corresponds to the two ends of each magnetic steel mounting groove (131).

4. The outer rotor hybrid integrated motor according to claim 1, characterized in that, A plurality of heat dissipation holes (113) are formed in the end face of the shell (11).

5. The outer rotor hybrid motor of claim 1, wherein A plurality of first connecting holes (211) are circumferentially formed in the edge of the stator support (21), and a plurality of second connecting holes (221) are formed in the stator core (22) and correspond to the first connecting holes (211).

6. The outer rotor IPM motor of claim 5, wherein A weight-reducing hole (212) is further circumferentially formed in the stator support (21).

7. The outer rotor hybrid motor of claim 1, wherein A first step part (213) extending along the whole circumference is further formed on the inner side wall of the stator support (21).

8. The outer rotor hybrid integrated motor of claim 1, wherein A second step part (112a) extending along the whole circumference is formed on the outer peripheral side wall of the connecting part (112).

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