A hybrid motor and device

Abstract

This utility model discloses a hybrid motor and device, relating to the field of motor structure technology. The hybrid motor includes: a stator core, which is annular in structure, with a plurality of evenly distributed lamination teeth on both the inner and outer circumferences of the stator core, extending circumferentially along the stator core; a first motor winding with lamination teeth on the outer circumference of the stator core; a second motor winding with lamination teeth on the inner circumference of the stator core; a first rotor assembly, which is annular in structure, fitted onto the outer circumference of the stator core with a gap between them, and connected to the motor main shaft; and a second rotor assembly, which is annular in structure, located on the inner circumference of the stator core, and connected to the motor main shaft. The hybrid motor and device provided in this application, by energizing one or both of the first and second motor windings, can achieve operation over a wide speed and efficiency range and improve power density.

Description

Technical Field

[0001] This utility model relates to the field of motor structure technology, and more specifically, to a hybrid motor. Furthermore, this utility model also relates to a device comprising the aforementioned hybrid motor. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy. Its principle is mainly based on electromagnetic induction and the interaction between current and magnetic field. When the motor windings are energized, a rotating magnetic field is generated on the stator core. This magnetic field interacts with the rotor conductors, causing the rotor conductors to cut magnetic field lines, thereby generating an induced electromotive force and current in the rotor conductors. In turn, under the action of the magnetic field, an electromagnetic force is generated, driving the rotor to rotate and realizing the conversion of electrical energy into mechanical energy.

[0003] The structure of an electric motor mainly consists of two parts: the stator and the rotor. The stator is the stationary part of the motor, usually composed of a stator core and stator windings. The stator core is generally a cylindrical structure made of stacked silicon steel sheets, and the stator windings are embedded in slots in the core. The rotor is the rotating part of the motor, and its structure varies depending on the type of motor.

[0004] Current motors have poor speed control capabilities and low power density.

[0005] In summary, improving the speed control capability and power density of motors is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a hybrid motor that can regulate the motor speed by simultaneously or individually energizing the first motor winding and the second motor winding, thereby improving the motor speed regulation capability and power density.

[0007] Another objective of this invention is to provide a device comprising the aforementioned hybrid motor.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A hybrid motor, comprising:

[0010] The stator core has a ring structure, and the inner and outer circumferences of the stator core are provided with a number of evenly distributed lamination teeth, which extend along the circumference of the stator core.

[0011] The first motor winding is provided on the lamination teeth on the outer periphery of the stator core;

[0012] The second motor winding is provided on the lamination teeth on the inner circumference of the stator core;

[0013] The first rotor assembly is a ring structure. The first rotor assembly is sleeved on the outer periphery of the stator core with a gap between them. The first rotor assembly is connected to the motor main shaft.

[0014] The second rotor assembly is a ring structure, located on the inner circumference of the stator core, and connected to the motor main shaft.

[0015] Preferably, the system further includes a rotor support, wherein the first rotor assembly and the second rotor assembly are both connected to the rotor support, the second rotor assembly is disposed on the inner periphery of the first rotor assembly, and the motor main shaft passes through the center of the rotor support and is fixedly connected to the rotor support.

[0016] Preferably, it also includes a stator base, wherein the stator core and the stator base are detachably connected by screws.

[0017] Preferably, the stator base has a through hole at its center, the motor spindle passes through the through hole, and the stator base has a bearing seat on the side facing the stator core, and a rear bearing sleeved on the motor spindle is provided in the bearing seat.

[0018] Preferably, the device further includes a motor housing, the motor housing having a through hole at its center, the motor spindle passing through the through hole, and a bearing seat on the side of the motor housing facing the stator core, the bearing seat containing a front bearing fitted onto the motor spindle.

[0019] Preferably, both the first motor winding and the second motor winding are three-phase windings.

[0020] Preferably, both the first motor winding and the second motor winding are connected to a power supply component via lead wires. The power supply component is connected to a control system, which controls the power supply component to supply power to the first motor winding and the second motor winding.

[0021] Preferably, the stator core, the first motor winding, and the second motor winding are provided with a sealing layer on their outer periphery.

[0022] Preferably, the number of lamination teeth on the inner circumference of the stator core is the same as the number of lamination teeth on its outer circumference, and they correspond one-to-one, with the two corresponding lamination teeth located on the same straight line.

[0023] An apparatus comprising a hybrid motor, wherein the hybrid motor is any of the hybrid motors described above.

[0024] This utility model provides a hybrid motor, in which a first motor winding is arranged on the outer periphery of the stator core, and a second motor winding is arranged on the inner periphery. A second rotor assembly is arranged inside the stator core, and the first rotor assembly is sleeved on the outer periphery of the stator core. When the first motor winding is energized, the corresponding first rotor assembly can drive the motor main shaft to rotate, at which time the motor main shaft is at the first speed. When the second motor winding is energized, the second rotor assembly can drive the motor main shaft to rotate, at which time the motor main shaft is at the second speed. When the first motor winding and the second motor winding are energized at the same time, the first rotor assembly and the second rotor assembly can drive the motor main shaft to rotate simultaneously, at which time the motor main shaft is at the third speed. This improves the motor's speed control capability and increases power density. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 An exploded view of the hybrid motor provided by this utility model;

[0027] Figure 2 This is a cross-sectional view of the hybrid motor provided by this utility model;

[0028] Figure 3 Exploded views of the first rotor assembly and the second rotor assembly provided by this utility model;

[0029] Figure 4 A cross-sectional view of the first rotor assembly and the second rotor assembly assembly provided by this utility model;

[0030] Figure 5 This is a structural schematic diagram of the stator core and the first motor winding and the second motor winding assembly provided by this utility model;

[0031] Figure 6 This is a schematic diagram of the stator core provided by this utility model;

[0032] Figure 7 This is a top view of the stator core provided by this utility model.

[0033] Figure label:

[0034] 1-Stator core; 2-Laminated teeth; 3-First motor winding; 4-Second motor winding; 5-First rotor assembly; 6-Motor spindle; 7-Second rotor assembly; 8-Rotor support; 9-Stator base; 10-Rear bearing; 11-Motor housing; 12-Front bearing; 13-First laminated slot; 14-Second laminated slot. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] The core of this invention is to provide a hybrid motor that improves both speed control capability and power density.

[0037] Another core aspect of this invention is to provide a device that includes the aforementioned hybrid motor.

[0038] It should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", and "rear" is based on the orientation or positional relationship shown in the accompanying drawings and is only for the purpose of facilitating the description of this application and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] This application provides a hybrid motor, comprising: a stator core 1, a first motor winding 3, a second motor winding 4, a first rotor assembly 5, and a second rotor assembly 7;

[0040] Among them, the stator core 1 is a ring structure, and the inner and outer circumferences of the stator core 1 are provided with a number of uniformly distributed lamination teeth 2, which extend along the circumference of the stator core 1.

[0041] The first motor winding 3 is located on the lamination teeth 2 on the outer periphery of the stator core 1;

[0042] The second motor winding 4 is located on the lamination teeth 2 on the inner circumference of the stator core 1;

[0043] The first rotor assembly 5 is a ring structure. The first rotor assembly 5 is sleeved on the outer periphery of the stator core 1 and there is a gap between the two. The first rotor assembly 5 is connected to the motor main shaft 6.

[0044] The second rotor assembly 7 is a ring structure. The second rotor assembly 7 is located on the inner circumference of the stator core 1 and is connected to the motor main shaft 6.

[0045] Specifically, the structure of stator core 1 can be found in the attached diagram. Figure 6 With appendix Figure 7 The stator core 1 has a ring-shaped or tubular structure. Lamination teeth 2 are provided on both the inner and outer circumferences of the stator core 1. A first lamination groove 13 is formed between the lamination teeth 2 on the outer circumference of the stator core 1 and the outer wall of the stator core 1. A second lamination groove 14 is formed between the lamination teeth 2 on the inner circumference of the stator core 1 and the inner wall of the stator core 1. A first motor winding 3 is disposed in the first lamination groove 13, and a second motor winding 4 is disposed in the second lamination groove 14. The structure of the assembly of the stator core 1, the first motor winding 3, and the second motor winding 4 can be found in the attached diagram. Figure 5 Furthermore, a first rotor assembly 5 is arranged on the inner circumference of the stator core 1, and a second rotor assembly 7 is arranged on the outer circumference of the stator core 1. Both the first rotor assembly 5 and the second rotor assembly 7 are annular structures, or tubular structures. When the first motor winding 3 is energized, the first rotor assembly 5 rotates accordingly through electromagnetic induction. When the second motor winding 4 is energized, the second rotor assembly 7 rotates accordingly. In addition, the first motor winding 3 and the second motor winding 4 can be energized simultaneously, that is, the first rotor assembly 5 and the second rotor assembly 7 can also rotate simultaneously. Both the first rotor assembly 5 and the second rotor assembly 7 are connected to the motor main shaft. In other words, the first rotor assembly 5... The ultimate result of energizing at least one of the first motor winding 3 and the second motor winding 4 is the rotation of the motor main shaft 6. When one motor winding is energized, the motor operates under light load, while the other winding generates electricity to recharge, improving energy utilization. Similarly, when the other winding is energized, the motor operates under both light and heavy load, while the other winding generates electricity to recharge, improving energy utilization. When the first motor winding 3 and the second motor winding 4 are energized simultaneously, it is under heavy load operation, at which point the motor output power is at its maximum, achieving operation over a wide speed and efficiency range. In addition, if one set of windings or the rotor has a problem, the other set can still work normally, improving safety and reliability.

[0046] Based on the above embodiments, a rotor support 8 is also included. The first rotor assembly 5 and the second rotor assembly 7 are both connected to the rotor support 8. The second rotor assembly 7 is disposed on the inner periphery of the first rotor assembly 5. The motor main shaft 6 passes through the center of the rotor support 8 and is fixedly connected to the rotor support 8.

[0047] Specifically, the structure of rotor support 8 can be found in the attached document. Figure 3 The first rotor assembly 5 is installed and pressed into the rotor bracket 8. The second rotor assembly 7 is fitted into the rotor bracket 8 with a gap and then tightened with screws. It cooperates with the motor spindle 6 so that the motor spindle 6 can be driven to rotate when either the first rotor assembly 5 or the second rotor assembly 7 rotates.

[0048] In some embodiments, a stator base 9 is also included, and the stator core 1 and the stator base 9 are detachably connected by screws.

[0049] Specifically, the structure of stator 9 can be found in the attached diagram. Figure 2 Its left side is a plane, and its right side surface is provided with threaded holes. The stator assembly, including the stator core 1, is fixedly installed with the stator base 9 using screws, so that the relative position between the stator assembly and the rotor assembly is determined to ensure the stability of the structure.

[0050] Based on the above embodiment, a through hole is provided in the center of the stator base 9, through which the motor spindle 6 passes. A bearing seat is provided on the side of the stator base 9 facing the stator core 1, and a rear bearing 10 sleeved on the motor spindle 6 is provided inside the bearing seat.

[0051] Specifically, a bearing housing extending axially to the right is provided on the right side of the stator housing 9, and a rear bearing 10 is provided inside the bearing housing. The rear bearing 10 and the through hole at the center of the stator housing 9 are concentric circles. The rear bearing 10 is sleeved on the outer periphery of the motor spindle 6 and is used to reduce friction. The motor spindle 6 is located inside the through hole.

[0052] In some embodiments, the motor housing 11 is further provided with a through hole at the center of the motor housing 11, through which the motor spindle 6 passes. A bearing seat is provided on the side of the motor housing 11 facing the stator core 1, and a front bearing 12 sleeved on the motor spindle 6 is provided in the bearing seat.

[0053] Specifically, the structure of the motor housing 11 can be referred to in the appendix. Figure 1 With appendix Figure 2 The motor housing 11 and the stator base 9 are correspondingly arranged and detachably connected. A bearing seat extending to the left axis is provided on the motor housing 11. A front bearing 12 is provided in the bearing seat. The front bearing 12 is sleeved on the end of the motor main shaft 6 away from the rear bearing 10. A through hole is also provided at the center of the motor housing 11. The two ends of the motor main shaft 6 pass through the two through holes respectively, and also pass through the rear bearing 10 and the front bearing 12 respectively. The friction is reduced by the rear bearing 10 and the front bearing 12.

[0054] In some embodiments, both the first motor winding 3 and the second motor winding 4 are three-phase windings.

[0055] Specifically, the installation method of the first motor winding 3 and the second motor winding 4 can be referred to in the appendix. Figure 5 Both the first motor winding 3 and the second motor winding 4 are installed to the stator core 1 by unwinding. The wiring is done by welding the three-phase busbar and the star point busbar according to the wiring diagram to ensure structural stability.

[0056] In some embodiments, the first motor winding 3 and the second motor winding 4 are both connected to the power supply component via lead wires. The power supply component is connected to the control system, and the control system is used to control the power supply component to supply power to the first motor winding 3 and the second motor winding 4.

[0057] Specifically, the stator core 1 is equipped with two sets of windings. The first motor winding 3 and the second motor winding 4 respectively lead out two sets of winding power lines, U1\V1\W1 and U2\V2\W2. Both sets of winding power lines are connected to the power supply component, which is connected to the control system. The control system can control the power supply component to supply power to the first motor winding 3 and the second motor winding 4. The power supply schemes include: 1. No power supply to either, at which time the motor spindle 6 does not rotate; 2. Power supply only to the first motor winding 3, at which time the motor spindle 6 rotates, that is, the motor rotates at medium speed and medium torque; 3. Power supply only to the second motor winding 4, at which time the motor spindle 6 rotates, that is, the motor rotates at high speed and low torque; 4. Power supply to both the first motor winding 3 and the second motor winding 4 simultaneously, at which time the motor spindle 6 rotates, and the motor is in a low speed and high torque range to achieve operation in a wide speed and wide efficiency range.

[0058] In some embodiments, a sealing layer is provided on the outer periphery of the stator core 1, the first motor winding 3 and the second motor winding 4.

[0059] Specifically, after the first motor winding 3 and the second motor winding 4 are installed on the stator core 1, lead wires need to be reserved. After completion, potting compound is used to encapsulate the entire structure to form a sealing layer, which improves heat dissipation and provides dust and water protection.

[0060] Based on the above embodiment, the number of lamination teeth 2 on the inner circumference of the stator core 1 is the same as that on its outer circumference and they correspond one-to-one, with the corresponding two lamination teeth 2 located on the same straight line.

[0061] Specifically, the structure and number of the lamination teeth 2 can be found in the appendix. Figure 7 The stator core 1 has two layers of slots, inner and outer, which can be allocated to the motor units in multiples. The number of lamination teeth 2 on the inner circumference of the stator core 1 is the same as that on the outer circumference, and they correspond one-to-one. Two corresponding lamination teeth 2 are located on the same straight line, but the tooth widths of the inner and outer circumference lamination teeth are different. The slot shapes of the first lamination slot 13 and the second lamination slot 14 are also different. The inner and outer slots share the same motor lamination yoke, which improves the utilization rate of the magnetic properties of the lamination yoke.

[0062] In addition to the hybrid motor described above, this utility model also provides a device that includes the hybrid motor disclosed in the above embodiments. For the structure of other parts of the device, please refer to the prior art, which will not be repeated here.

[0063] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0064] The hybrid motor and device provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A hybrid electric machine characterized by, include: The stator core (1) has a ring structure. The inner and outer circumferences of the stator core (1) are provided with a number of uniformly distributed lamination teeth (2). The lamination teeth (2) extend along the circumference of the stator core (1). The first motor winding (3) is provided on the lamination teeth (2) on the outer periphery of the stator core (1). The second motor winding (4) is provided on the lamination teeth (2) on the inner circumference of the stator core (1). The first rotor assembly (5) is a ring structure. The first rotor assembly (5) is sleeved on the outer periphery of the stator core (1) and there is a gap between them. The first rotor assembly (5) is connected to the motor main shaft (6). The second rotor assembly (7) is a ring structure. The second rotor assembly (7) is located on the inner circumference of the stator core (1) and is connected to the motor main shaft (6).

2. The hybrid electric machine of claim 1, wherein, It also includes a rotor support (8), the first rotor assembly (5) and the second rotor assembly (7) are both connected to the rotor support (8), the second rotor assembly (7) is disposed on the inner periphery of the first rotor assembly (5), and the motor main shaft (6) passes through the center of the rotor support (8) and is fixedly connected to the rotor support (8).

3. The hybrid electric machine of claim 1, wherein, It also includes a stator base (9), and the stator core (1) and the stator base (9) are detachably connected by screws.

4. The hybrid electric machine of claim 3, wherein, The stator base (9) has a through hole in the center, the motor spindle (6) passes through the through hole, and the stator base (9) has a bearing seat on the side facing the stator core (1), and the bearing seat has a rear bearing (10) sleeved on the motor spindle (6).

5. The hybrid electric machine of claim 3, wherein, It also includes a motor housing (11), the center of which is provided with a through hole, the motor spindle (6) passes through the through hole, and a bearing seat is provided on the side of the motor housing (11) facing the stator core (1), and a front bearing (12) sleeved on the motor spindle (6) is provided in the bearing seat.

6. The hybrid electric machine of claim 1, wherein, Both the first motor winding (3) and the second motor winding (4) are three-phase windings.

7. The hybrid electric machine of claim 1, wherein, The first motor winding (3) and the second motor winding (4) are both connected to the power supply component through lead wires. The power supply component is connected to the control system. The control system is used to control the power supply component to supply power to the first motor winding (3) and the second motor winding (4).

8. The hybrid electric machine of claim 1, wherein, The stator core (1), the first motor winding (3) and the second motor winding (4) are provided with a sealing layer on their outer periphery.

9. The hybrid electric machine of any one of claims 1 to 8, wherein, The number of lamination teeth (2) on the inner circumference of the stator core (1) is the same as the number of lamination teeth (2) on the outer circumference and they correspond one-to-one. The two corresponding lamination teeth (2) are located on the same straight line.

10. A device comprising a hybrid motor, characterized in that, The hybrid motor is the hybrid motor as described in any one of claims 1 to 9.

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