Solar energy-efficient brushless motor

Abstract

The utility model relates to a solar energy high energy efficiency brushless motor comprising a stator iron core yoke and stator iron core teeth, the stator iron core yoke and the stator iron core teeth are in a split type structure, and the stator iron core yoke and the stator iron core teeth are clamped and fixed together; the stator iron core yoke is of a circular structure, and bosses are evenly arranged on the inner wall of the stator iron core yoke. The stator core teeth are of a gear-shaped structure, tooth profiles clamped with the bosses are evenly arranged on the outer wall of each stator core tooth, a tooth groove is formed between every two adjacent tooth profiles, and each tooth groove is a closed groove opening. According to the scheme, the design of a high-energy-efficiency scheme of the brushless motor is researched, and the purposes of improving the power density of a product, optimizing the assembly efficiency of the product and reducing the transmission energy consumption are achieved through structural modification of a stator scheme of the brushless motor and independent design after the stator iron core yoke and the stator iron core teeth are split. The design of the tooth shape and the boss is optimized, so that the tooth part can be accurately and tightly connected and fixed to the yoke part, and the connection stability and the operation efficiency of the brushless motor are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to brushless motor technical field especially relates to a solar high energy efficiency brushless motor. BACKGROUND

[0002] With the global demand for clean energy and efficient energy growing, solar energy as a renewable energy has been widely concerned and applied. In the solar power generation system, the brushless motor as a key energy conversion equipment, its efficient and reliable performance has an important influence on the efficiency and stability of the whole system. However, the conventional solar brushless motor adopts the overall type winding scheme, and the winding slot fullness of this scheme is low, the motor power density is small, and the transmission energy consumption is large. SUMMARY

[0003] The utility model discloses a solar high energy efficiency brushless motor to solve the problems encountered in the above background technology.

[0004] To achieve the above object, the technical scheme of the utility model is as follows:

[0005] A solar high energy efficiency brushless motor, comprising a stator core yoke and a stator core tooth, the stator core yoke and the stator core tooth are of split type structure and are clamped together; the stator core yoke is in a circular ring structure, and the inner wall is uniformly provided with a boss; the stator core tooth is in a gear-like structure, and the outer wall is uniformly provided with a tooth type clamped with the boss, and the tooth type between adjacent two forms a tooth slot, and the tooth slot is a closed slot.

[0006] In the above scheme, as a preferred scheme, the length size of the boss is same as the length size of the top of the tooth type, and the two sides of the boss are provided with a transition bevel that is transitioned with the connection of the tooth type.

[0007] In the above scheme, as a preferred scheme, the tooth slot is a U-shaped structure with both sides expanded outward, and the bottom of the tooth slot is provided with a slope that is contracted to the middle.

[0008] In order to facilitate assembly, the end surface of the stator core yoke is uniformly provided with a first mounting hole, and the end surface of the stator core tooth is uniformly provided with a second mounting hole.

[0009] In the implementation, a skeleton and a rotor core are further included, the skeleton is sleeved on the tooth type, and the rotor core is installed in the middle circular cavity of the stator core tooth.

[0010] Compared with the prior art, the beneficial effects of the utility model are that the stator core yoke and the stator core tooth are separated, the winding of the assembly personnel is facilitated, and the slot fill factor is improved. In the improvement of the structure, the tooth slot is formed between the two adjacent tooth types, and the tooth slot is a closed slot. The design of the closed slot reduces the air gap reluctance, improves the motor efficiency, reduces the tooth slot torque, reduces the magnetic flux leakage, further reduces the electromagnetic interference, and improves the electromagnetic compatibility. The utility model studies the design of the high energy efficiency scheme of the brushless motor, and through the structure modification of the brushless motor stator scheme, the stator core yoke and the stator core tooth are separately designed after being split, so that the product power density is improved, the efficiency of the product assembly is optimized, and the transmission energy consumption is reduced. The design of the tooth type and the boss is optimized to ensure that the tooth part can be accurately and closely connected and fixed to the yoke part, improve the connection stability and operation efficiency of the brushless motor. BRIEF DESCRIPTION OF DRAWINGS

[0011] The disclosure of the utility model will be explained with reference to the drawings. It should be understood that the drawings are only for illustrative purposes, and are not intended to limit the protection scope of the utility model. In the drawings, the same reference signs are used to refer to the same parts. Among them:

[0012] Figure 1 It is a structural schematic view of the utility model;

[0013] Figure 2 It is a structural schematic view of the stator core yoke in the utility model;

[0014] Figure 3 It is a structural schematic view of the stator core tooth in the utility model;

[0015] Figure 4 It is a connection structure schematic view of the tooth type and the boss in the utility model;

[0016] Figure 5 It is a structural schematic view of the utility model in the implementation.

[0017] Reference signs in the drawing: 1-stator core yoke; 11-boss; 12-transition bevel; 13-first mounting hole; 2-stator core tooth; 21-tooth type; 22-tooth slot; 23-ramp; 24-second mounting hole; 3-skeleton; 4-rotor core. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model will be further described in detail in combination with the drawings. These drawings are all simplified schematic views, and only illustrate the basic structure of the utility model in a schematic manner, so they only show the relevant structure of the utility model.

[0019] According to the technical scheme of the utility model, a plurality of structure modes and implementation modes which can be replaced with each other can be proposed by the general skilled in the art without changing the essential spirit of the utility model. Therefore, the following specific embodiments and drawings are only exemplary description of the technical scheme of the utility model, and should not be regarded as the whole of the utility model or regarded as the limitation or restriction of the technical scheme of the utility model.

[0020] The technical scheme of the utility model will be further described in detail below in combination with the drawings and embodiments.

[0021] As shown in the drawings, Figures 1 to 4 A solar high-energy-efficiency brushless motor includes a stator core yoke 1 and a stator core tooth 2, the stator core yoke 1 and the stator core tooth 2 are of split structure and are clamped together. In implementation, transition or slight interference fit can be adopted to avoid deformation during installation and ensure close fit.

[0022] On the basis of the traditional stator lamination structure, the stator core yoke 1 and the stator core tooth 2 are separated in the present scheme, which facilitates winding by assembly personnel and improves slot fill factor. The structure design of separation of the stator core yoke 1 and the stator core tooth 2 has the advantages of optimizing the distribution and utilization rate of stator magnetic flux, and precise width ratio calculation can be further performed according to the performance requirements of the brushless motor and the material properties to further improve the performance and efficiency of the motor.

[0023] The stator core yoke 1 is the main flow path of the magnetic field and has a whole circular ring structure, and the inner wall is uniformly provided with a boss 11. The stator core tooth 2 has a gear-like structure, and the outer wall is uniformly provided with a tooth type 21 clamped with the boss 11, and a plurality of protruding tooth types 21 are used to guide the magnetic field. The joint of the boss 11 and the tooth type 21 is the connection area of the stator core yoke 1 and the stator core tooth 2, and the area has high magnetic resistance.

[0024] In the improvement of the structure, tooth slots 22 are formed between the adjacent two tooth types 21, and the tooth slots 22 are closed slots. The design of closed slots reduces the air gap reluctance, improves the motor efficiency, reduces the tooth slot torque, and also reduces the magnetic flux leakage, thereby reducing electromagnetic interference and improving electromagnetic compatibility.

[0025] The conventional stator core lamination structure is a slot portion with an opening, which is changed to a closed slot in the present scheme, and each tooth type 21 is connected as a whole. Because the magnetic resistance at the joint of the stator core yoke 1 and the stator core tooth 2 is high, high-performance silicon steel sheets can be selected during material selection to reduce the influence of magnetic resistance on performance.

[0026] The length dimension of the boss 11 is the same as the top length dimension of the tooth type 21, and the two sides of the boss 11 are provided with transition chamfers 12 which are transitioned with the connection of the tooth type 21. The yoke width of the boss 11 and the transition chamfers 12 on both sides are optimized to ensure the stable strength of the splicing with the stator tooth and the optimality of the yoke electromagnetic scheme. The transition chamfer 12 is smooth, which can reduce the local concentration of magnetic resistance.

[0027] Because the stator core tooth 2 is in a gear-like structure, the tooth groove 22 is in a U-shaped structure which is expanded on both sides, and the bottom of the tooth groove 22 is provided with a slope 23 which is contracted to the middle, for increasing the structural stability of the stator core tooth 2.

[0028] In addition, in order to facilitate assembly, the end surface of the stator core yoke 1 is uniformly provided with a first mounting hole 13 for mounting the front and rear covers through screws, and the end surface of the stator core tooth 2 is uniformly provided with a second mounting hole 24 for screwing with the skeleton 3.

[0029] Please refer to Figure 5 A solar high-energy-efficiency brushless motor includes a stator core yoke 1 and a stator core tooth 2, and in the implementation, further includes a skeleton 3 and a rotor core 4. The skeleton 3 is sleeved on the tooth type 21 and is fixed together through the second mounting hole 24, and the rotor core 4 is installed in the middle circular cavity of the stator core tooth 2, and in the working state, the rotor core 4 cuts the magnetic induction lines and rotates under force.

[0030] The stator core yoke 1 and the stator core tooth 2 adopt a separated structure, and the selection of the size of each part needs to consider the magnetic density, and the selection of the magnetic density and the material characteristics are related to the motor type, operating conditions, etc. The tooth groove 22 of the stator core tooth 2 is a magnetic flux concentration area, so the magnetic density is relatively high, and the recommended value of the magnetic field strength is generally between 1.3 and 1.7 Tesla of the material. The yoke of the stator core yoke 1 is the main channel of the magnetic flux, and the magnetic density is relatively low, and the recommended value of the magnetic field strength is generally between 1.0 and 1.4 Tesla of the material.

[0031] The present scheme studies the design of the high-energy-efficiency scheme of the brushless motor, and through the structural modification of the brushless motor stator scheme, the stator core yoke 1 and the stator core tooth 2 are separately designed after being split, so as to improve the power density of the product and optimize the efficiency of the product assembly. The design of the tooth type 21 and the boss 11 is optimized to ensure that the tooth part can be accurately and closely connected and fixed to the yoke part, and the connection stability and the operating efficiency of the brushless motor are improved.

[0032] It should be noted that in this text, relational terms such as first and second are used merely to distinguish one entity or action from another, and do not necessarily require or imply any such actual relationship or order between such entities or actions.

[0033] The above specific embodiments explain the purpose, technical scheme and beneficial effects of the present application in further detail, and it should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A solar high energy efficient brushless motor characterized by: The utility model relates to a kind of stator core and rotor core, including stator core yoke (1) and stator core tooth (2), the stator core yoke (1) is split structure with stator core tooth (2), and the two are clamped together;Stator core yoke (1) is circular ring structure, and the inner wall is uniformly provided with boss (11);The stator core tooth (2) is gear-like structure, and the outer wall is uniformly provided with the tooth type (21) that is clamped with the boss (11), and the tooth type (21) between adjacent two constitutes tooth slot (22), and tooth slot (22) is closed notch.

2. A high-efficiency brushless motor powered by solar energy as claimed in claim 1, wherein: The length dimension of the boss (11) is same with the top length dimension of tooth type (21).

3. A high-efficiency brushless motor powered by solar energy as claimed in claim 2, wherein: The two sides of the boss (11) are provided with transition bevel (12) that is transition with the connecting place of tooth type (21).

4. A high-efficiency brushless motor powered by solar energy as claimed in claim 1, wherein: The tooth slot (22) is U-shaped structure that is expanded outside at two sides.

5. A high-efficiency solar brushless motor according to claim 4, characterized in that: The bottom of the tooth slot (22) is provided with slope (23) that is shrunk to middle at two sides.

6. A high-efficiency brushless motor powered by solar energy as claimed in claim 1, wherein: The end face of the stator core yoke (1) is uniformly provided with first mounting hole (13), and the end face of the stator core tooth (2) is uniformly provided with second mounting hole (24).

7. A high-efficiency brushless motor powered by solar energy as claimed in claim 1, wherein: Still including framework (3) and rotor core (4), the framework (3) is sleeved on tooth type (21), and rotor core (4) is installed in the middle circular cavity of stator core tooth (2).

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