Double-winding stator

Abstract

The utility model provides a duplex winding stator, which comprises a plurality of coil racks which can be mutually connected to form an annular structure, each coil rack comprises a first winding for driving a rotor on a main motor to rotate and a second winding for driving a rotor on a standby motor to rotate, and an insulating separation blade is arranged between the first winding and the second winding. And the insulating separation blade is fixed on the coil rack. The double-winding stator can effectively improve the space utilization rate.

Description

TECHNICAL FIELD

[0001] The utility model relates to stator structure technical field, concretely relates to a double winding stator. BACKGROUND

[0002] The stator core is used for providing a low magnetic resistance path to guide a magnetic field, and forms a complete magnetic circuit together with a rotor core and an air gap, and the inner circle punching groove is used for embedding and placing a stator winding to ensure stable work of the circuit part, the stator core adopts a silicon steel sheet lamination design to reduce eddy current and hysteresis loss, in the prior art, in order to ensure that the equipment can stably operate, a main motor and a standby motor are arranged, when the main motor stops working, the standby motor is started to replace the main motor to work, but the double motor system usually needs two independent stator cores, one stator core corresponds to each motor, this structure not only needs more manufacturing cost, and the area occupied by the stator core is also larger, and space optimization cannot be realized. SUMMARY

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the defects that two motors are arranged with two stators in the prior art, resulting in high manufacturing cost and low space utilization, so as to provide a structure of a double winding stator which reduces cost and improves space utilization.

[0004] Therefore, the utility model provides a double winding stator, which comprises a plurality of coil racks which can be connected with each other and form a ring structure, the coil rack comprises a first winding for driving a rotor on a main motor to rotate and a second winding for driving a rotor on a standby motor to rotate, the first winding and the second winding are provided with an insulating baffle, and the insulating baffle is fixed on the coil rack.

[0005] Further, the first winding comprises a plurality of first coils wound on the coil rack, the second winding comprises a plurality of second coils wound on the coil rack, the coil rack is provided with a first groove for winding the first coil and a second groove for winding the second coil, and the insulating baffle is arranged between the first groove and the second groove.

[0006] Further, the first groove is provided with a first heat dissipation groove for assisting heat dissipation of the first coil, and the second groove is provided with a second heat dissipation groove for assisting heat dissipation of the second coil.

[0007] Further, the first heat dissipation groove and the second heat dissipation groove are in communication with each other.

[0008] Further, the insulating baffle is provided with a first hollow groove in communication with the first heat dissipation groove and the second heat dissipation groove, and the second groove is provided with an anti-extraction plate for preventing the second coil from being extracted at an end away from the insulating baffle, and the anti-extraction plate is provided with a second hollow groove in communication with the first heat dissipation groove and the second heat dissipation groove.

[0009] Further, the anti-falling plate and the second groove are provided with an anti-falling inclined surface for preventing the second coil from falling out.

[0010] Further, the several coil holders are integrally injection molded.

[0011] Further, the connecting portions of the several coil holders are detachably connected.

[0012] The technical scheme of the utility model has the following advantages:

[0013] 1. The utility model provides a kind of double-winding stator, and double-winding stator is formed by a plurality of coil holders around and forms annular structure, first winding is used to drive the rotation of rotor on main motor, to prevent first winding and second winding from interfering with each other, insulating baffle is arranged on coil holder, and insulating baffle and coil holder are integrally processed by processing mold, by the arrangement of insulating baffle, first winding and second winding can be effectively prevented from contacting, so that the space can be effectively utilized while avoiding the occurrence of motor short-circuit caused by the contact of first winding and second winding.

[0014] 2. The utility model provides a kind of double-winding stator, and first coil on a plurality of coil holders constitutes first winding, and second coil on a plurality of coil holders constitutes second winding, first coil is wound on first groove, and second coil is wound on second groove, and first groove and second groove are separated by insulating baffle, and this winding mode can guarantee higher slot fill factor in first groove and second groove, so that motor can work more efficiently. DETAILED DESCRIPTION

[0015] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of specific embodiments or prior art. Obviously, the drawings described below are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0016] Figure 1 It is a connection structure diagram of double-winding stator;

[0017] Figure 2 It is a structure diagram of coil support removing first coil and second coil;

[0018] Figure 3 It is a connection structure diagram of double-winding stator;

[0019] Figure 4 It is a structure diagram of coil support winding with first coil and second coil.

[0020] Reference Signs List:

[0021] 1, coil holder; 2, first winding; 21, first coil; 3, second winding; 31, second coil; 4, insulation baffle; 41, first empty slot; 5, first groove; 6, second groove; 7, first heat dissipation groove; 8, second heat dissipation groove; 9, anti-off plate; 91, second empty slot; 92, anti-off inclined surface. DETAILED DESCRIPTION

[0022] The technical solutions of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0023] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application 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 present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; 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, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0026] Embodiment

[0027] The present embodiment provides a double-winding stator, comprising a plurality of coil holders 1 which can be connected to each other to form a ring structure, the coil holder 1 comprising a first winding 2 for driving the rotation of the rotor on the main motor and a second winding 3 for driving the rotation of the rotor on the standby motor, the first winding 2 and the second winding 3 having an insulation baffle 4, the insulation baffle 4 being fixed on the coil holder 1.

[0028] The specific improvement is that, as shown in Figure 1 and Figure 2 The double-winding stator is formed into a ring structure by a plurality of coil frames 1, the first winding 2 is used to drive the rotation of the rotor on the main motor, and the insulating baffle 4 is arranged on the coil frame 1 to prevent the first winding 2 and the second winding 3 from interfering with each other. The insulating baffle 4 is integrally formed with the coil frame 1 by a machining mold. Through the arrangement of the insulating baffle 4, the contact between the first winding 2 and the second winding 3 can be effectively prevented, so that the space can be effectively utilized, and the short circuit of the motor caused by the contact between the first winding 2 and the second winding 3 can be avoided.

[0029] On the basis of the above embodiment, the first winding 2 includes a plurality of first coils 21 wound on the coil frame 1, the second winding 3 includes a plurality of second coils 31 wound on the coil frame 1, the coil frame 1 is provided with a first groove 5 for winding the first coil 21 and a second groove 6 for winding the second coil 31, and the insulating baffle 4 is arranged between the first groove 5 and the second groove 6.

[0030] The specific improvement is that, as shown in Figures 1-4 The first winding 2 is composed of a plurality of first coils 21 on the coil frame 1, the second winding 3 is composed of a plurality of second coils 31 on the coil frame 1, the first coil 21 is wound on the first groove 5, the second coil 31 is wound on the second groove 6, and the first groove 5 and the second groove 6 are separated by the insulating baffle 4. This winding mode can ensure a high slot fill rate in the first groove 5 and the second groove 6, so that the motor can work more efficiently.

[0031] On the basis of the above embodiment, the first groove 5 is provided with a first heat dissipation groove 7 for assisting heat dissipation of the first coil 21, and the second groove 6 is provided with a second heat dissipation groove 8 for assisting heat dissipation of the second coil 31.

[0032] On the basis of the above embodiment, the first heat dissipation groove 7 and the second heat dissipation groove 8 are in communication with each other.

[0033] The specific improvement is that the first groove 5 is provided with the first heat dissipation groove 7, and the second groove 6 is provided with the second heat dissipation groove 8. When the first coil 21 and the second coil 31 are wound on the first groove 5 and the second groove 6 respectively, a space for dissipating the heat generated by the first coil 21 and the second coil 31 during work can be provided, and the entire coil frame 1 can be lightened.

[0034] On the basis of the above embodiment: the insulating baffle 4 is provided with a first hollow groove 41 communicated with the first and second heat dissipation grooves 7 and 8, the second recess 6 is provided at one end away from the insulating baffle 4 with an anti-extraction plate 9 preventing the second coil 31 from being extracted, and the anti-extraction plate 9 is provided with a second hollow groove 91 communicated with the first and second heat dissipation grooves 7 and 8.

[0035] The specific improvement is that, as shown in Figure 2 , the first and second hollow grooves 41 and 91 can effectively increase the heat dissipation area of the first and second coils 21 and 31, and the anti-extraction plate 9 can prevent the second coil 31 from being extracted from the second recess 5

[0036] On the basis of the above embodiment: the anti-extraction plate 9 and the second recess 6 are provided with an anti-extraction inclined surface 92 preventing the second coil 31 from being extracted.

[0037] The specific improvement is that, as shown in Figure 2 , the anti-extraction inclined surface 92 guides the second coil 31 to be wound in the extending direction, ensuring that the winding is tight and uniform, and avoiding looseness or overlapping.

[0038] On the basis of the above embodiment: the coil holders 1 are integrally injection molded.

[0039] On the basis of the above embodiment: the connecting portions of the coil holders 1 are detachably connected.

[0040] The specific improvement is that, as shown in Figure 1 and Figure 3 , the coil holder 1 can be integrally injection molded by a processing mold, or can be formed by assembling and splicing single coil holders 1, and the manufacturer can choose according to the specific situation.

[0041] Obviously, the above embodiments are only examples for clearly illustrating, and not limit the implementation. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the implementation is not necessary and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A dual-winding stator, characterized by: The application relates to a coil holder (1) which can be connected to each other to form a ring structure, wherein the coil holder (1) comprises a first winding (2) for driving the rotation of a rotor of a main motor and a second winding (3) for driving the rotation of a rotor of a standby motor, and an insulation baffle (4) is arranged between the first winding (2) and the second winding (3) and fixed to the coil holder (1).

2. A dual winding stator as claimed in claim 1, characterized in that: The first winding (2) comprises a plurality of first coils (21) wound on the coil holder (1), the second winding (3) comprises a plurality of second coils (31) wound on the coil holder (1), and the coil holder (1) is provided with a first groove (5) for winding the first coils (21) and a second groove (6) for winding the second coils (31), and the insulation baffle (4) is arranged between the first groove (5) and the second groove (6).

3. A dual winding stator according to claim 2, characterised in that: The first groove (5) is provided with a first heat dissipation groove (7) for assisting the heat dissipation of the first coils (21), and the second groove (6) is provided with a second heat dissipation groove (8) for assisting the heat dissipation of the second coils (31).

4. A dual winding stator as claimed in claim 3, characterised in that: The first heat dissipation groove (7) and the second heat dissipation groove (8) are communicated with each other.

5. A dual winding stator as claimed in claim 3, characterised in that: The insulation baffle (4) is provided with a first hollow groove (41) communicated with the first heat dissipation groove (7) and the second heat dissipation groove (8), one end of the second groove (6) away from the insulation baffle (4) is provided with an anti-extraction plate (9) for preventing the second coils (31) from being extracted, and the anti-extraction plate (9) is provided with a second hollow groove (91) communicated with the first heat dissipation groove (7) and the second heat dissipation groove (8).

6. A dual winding stator as claimed in claim 5, characterised in that: The anti-extraction plate (9) and the second groove (6) are provided with an anti-extraction inclined surface (92) for preventing the second coils (31) from being extracted.

7. A double-winding stator according to any one of claims 1-6, characterized in that: The plurality of coil holders (1) are integrally injection molded.

8. A dual-winding stator according to any one of claims 1-6, characterized in that: The connecting portions of the plurality of coil holders (1) are detachably connected.

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