Stator segment core

Abstract

The utility model discloses a kind of stator split core, comprising a plurality of single stator split core of surrounding city round, the outside one side of each single stator split core is camber surface, the outside other side of each single stator split core is notched portion one, the both ends of the camber surface are equipped with recess, the end of the camber surface is equipped with notched portion two, the notched portion one and the adjacent end portion of the single stator split core form fold surface structure one, the notched portion two and the adjacent end portion of the single stator split core form fold surface structure two, the fold surface structure one and the fold surface structure two structure are same. The utility model changes single and double convex point connecting mode to be inclined angle connecting mode, optimizes welding point position, adjust it from the highest place of original welding magnetic field density to the weakest place of magnetic field density, effectively reduce the influence of welding area to overall magnetic circuit, reduce stator iron loss, to significantly improve motor efficiency.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and more specifically, to a stator segmented iron core. Background Technology

[0002] Permanent magnet synchronous motors are widely used in industry and new energy fields due to their high efficiency and energy saving advantages. However, traditional integral rotor cores suffer from problems such as high leakage flux, large magnet consumption, and high cost. Adopting a segmented structure, through optimized structural design, improves the utilization rate of silicon steel sheets, thereby further reducing motor production costs. The segmented core structure effectively reduces the size and weight of individual components by dividing the core into multiple sector-shaped segments, solving the challenges of transportation and on-site assembly of large motors.

[0003] The original segmented core structure used welded connections, and the weld points happened to be the areas with the densest magnetic field density. This led to increased overall iron losses in the motor, and the welded area's impact on the overall magnetic circuit was detrimental to meeting the high efficiency requirements of permanent magnet synchronous motors. Secondly, as... Figure 4-5 The diagram shows the original stator segmented core structure. Although the original segmented core was designed with a mother-son structure connection, it was prone to loosening during assembly and welding, resulting in poor welding. This led to excessive roundness deviation after welding, causing uneven air gap between the stator and rotor, which affected motor efficiency.

[0004] There is currently no effective solution to the above problems. Utility Model Content

[0005] In view of the above-mentioned technical problems in related technologies, this utility model proposes a stator segmented iron core, which can overcome the above-mentioned shortcomings of the prior art.

[0006] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows: A stator segmented core includes several individual stator segmented cores arranged in a circular shape. One outer side of each individual stator segmented core is an arc surface, and the other outer side of each individual stator segmented core is a notch. Both ends of the arc surface are provided with grooves, and the inner end of the arc surface is provided with a notch. The notch and the adjacent end of the individual stator segmented core form a folded structure, and the notch and the adjacent end of the individual stator segmented core form a folded structure. The folded structure and the folded structure are identical in structure.

[0007] Furthermore, the groove includes groove one and groove two, wherein groove one and groove two of the adjacent single stator segmented iron core constitute the welding point of the segmented iron core.

[0008] Furthermore, the first folded structure includes a first vertical surface, a first inclined surface, and a first end surface, and the second folded structure includes a second end surface, a second inclined surface, and a second vertical surface.

[0009] Furthermore, the first vertical surface abuts against the second end face of the adjacent single stator segmented iron core, the first inclined surface abuts against the second inclined surface of the adjacent single stator segmented iron core, and the first end face abuts against the second vertical surface of the adjacent single stator segmented iron core.

[0010] The beneficial effects of this invention are as follows: This invention changes the previous male-female protrusion connection method to an angled connection method, optimizing the welding point position by adjusting it from the point of highest magnetic field density to the point of lowest magnetic field density. This effectively reduces the impact of the welding area on the overall magnetic circuit, reduces stator iron loss, and thus significantly improves motor efficiency. The optimized structural design makes the magnetic circuit distribution more uniform, effectively avoiding local magnetic saturation problems and further optimizing the electromagnetic performance of the motor. In addition, this structural design simplifies the processing and assembly process, greatly improves production efficiency, and has good manufacturability and broad application potential. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a current stator segmented core diagram according to the embodiments of the present utility model; Figure 2 This is a diagram of a single stator segmented core according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structural combination of adjacent individual stator segmented cores according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the original stator segmented core structure according to an embodiment of the present utility model; Figure 5 This is a diagram of the original single stator segmented core according to an embodiment of the present invention; Figure 6 This is a diagram showing the welding positions of the segmented stator core according to an embodiment of the present invention; Figure 7 This is a diagram showing the welding positions of the stator segmented core according to an embodiment of the present invention. In the diagram: 1. Single stator segmented core; 2. Arc surface; 3. Welding point; 4. Folded structure one; 5. Folded structure two; 6. Groove one; 7. Groove two; 8. Original single stator segmented core; 9. Welding point; 401. Vertical surface one; 402. Inclined surface one; 403. End face one; 501. End face two; 502. Inclined surface two; 503. Vertical surface two. Detailed Implementation

[0013] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0014] like Figure 1-3 As shown in Figure 7, a stator segmented core according to an embodiment of the present invention includes several individual stator segmented cores 1 arranged in a circular shape. One outer side of each individual stator segmented core 1 is an arc surface 2, and the other outer side of each individual stator segmented core 1 is a notch. Both ends of the arc surface 2 are provided with grooves, and the inner end of the arc surface 2 is provided with a notch. The notch and the adjacent end of the individual stator segmented core 1 form a folded structure 4, and the notch and the adjacent end of the individual stator segmented core 1 form a folded structure 5. The folded structure 4 and the folded structure 5 have the same structure.

[0015] In this embodiment, the groove includes a first groove 6 and a second groove 7. The first groove 6 and the second groove 7 of the adjacent single stator segmented core 1 constitute the welding point 3 of the segmented core.

[0016] In the embodiment, the first folded structure 4 includes a vertical surface 401, an inclined surface 402, and an end surface 403, and the second folded structure 5 includes an end surface 501, an inclined surface 502, and a vertical surface 503.

[0017] In the embodiment, the first vertical surface 401 abuts against the second end surface 501 of the adjacent single stator segmented iron core 1, the first inclined surface 402 abuts against the second inclined surface 502 of the adjacent single stator segmented iron core 1, and the first end surface 403 abuts against the second vertical surface 503 of the adjacent single stator segmented iron core 1.

[0018] To facilitate understanding of the above-mentioned technical solutions of this utility model, the following detailed description of the above-mentioned technical solutions of this utility model is provided through specific usage methods.

[0019] In practical applications, based on the stator segmented iron core described in this utility model, in order to improve motor efficiency, reduce iron loss of the motor itself, reduce the risk of magnetic leakage, reduce losses caused by welding, and achieve the high efficiency requirements of permanent magnet synchronous motors, a new type of stator segmented iron core is designed, as shown in 1-2.

[0020] Simulation analysis and actual testing show that magnetic flux leakage can be reduced by passing the magnetic flux through the teeth to the yoke. The magnetic field strength in the stator segmented core reaches its maximum value at the midpoint between two teeth, while the magnetic field strength between the teeth is usually relatively low. The original core welding position was often chosen at the midpoint between two teeth, such as... Figure 6 As shown, this results in a larger iron loss after actual welding, which in turn reduces the efficiency of the motor.

[0021] Therefore, this invention improves the original stator segmented core structure by changing the previous male-female protrusion connection method to an angled connection method. This structural adjustment moves the welding position from the area with the highest magnetic field density to the area with the weakest magnetic field density, effectively avoiding the influence of the welding area on the overall magnetic circuit, further reducing stator iron loss, and thus significantly improving motor efficiency. The above content details the specific scheme and inventive concept of the novel stator segmented core proposed in this invention. Figure 6-7 This is a comparison diagram of the welding points of the stator segmented core in the original design and the current design.

[0022] Compared with the original technical solution, the technical effects of the present invention are reflected in the following aspects: 1. The structural design optimizes the location of the welding point, adjusting it from the point of highest magnetic field density to the point of lowest magnetic field density. This effectively reduces the impact of the welding area on the overall magnetic circuit, reduces stator iron loss, and thus significantly improves motor efficiency.

[0023] 2. The optimized structural design makes the magnetic circuit distribution more uniform, effectively avoiding the problem of local magnetic saturation and further optimizing the electromagnetic performance of the motor.

[0024] 3. In addition, this structural design simplifies the processing and assembly process, greatly improves production efficiency, and has good manufacturability and broad application potential.

[0025] In summary, by utilizing the above-mentioned technical solution of this utility model, the previous male-female protrusion connection method is changed to an angled connection method, optimizing the welding point position by adjusting it from the point of highest magnetic field density to the point of lowest magnetic field density. This effectively reduces the impact of the welding area on the overall magnetic circuit, reduces stator iron loss, and thus significantly improves motor efficiency. The optimized structural design makes the magnetic circuit distribution more uniform, effectively avoiding local magnetic saturation problems and further optimizing the electromagnetic performance of the motor. In addition, this structural design simplifies the processing and assembly process, greatly improves production efficiency, and has good manufacturability and broad application potential.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stator segmented iron core, characterized in that, It includes several circular stator segmented iron cores (1), each stator segmented iron core (1) has an outer side arc surface (2) and an outer side notch portion one. Both ends of the arc surface (2) are provided with grooves, and the inner end of the arc surface (2) is provided with a notch portion two. The notch portion one and the adjacent end of the stator segmented iron core (1) form a folded structure one (4), and the notch portion two and the adjacent end of the stator segmented iron core (1) form a folded structure two (5). The folded structure one (4) and the folded structure two (5) have the same structure.

2. The stator segmented core according to claim 1, characterized in that, The groove includes groove one (6) and groove two (7), and groove one (6) and groove two (7) of the adjacent single stator segmented core (1) form a welding point (3) of the segmented core.

3. The stator segmented core according to claim 1, characterized in that, The first folded structure (4) includes a first vertical surface (401), a first inclined surface (402) and a first end surface (403), and the second folded structure (5) includes a second end surface (501), a second inclined surface (502) and a second vertical surface (503).

4. The stator segmented core according to claim 3, characterized in that, The first face (401) abuts against the second end face (501) of the adjacent single stator segmented core (1), the first inclined face (402) abuts against the second inclined face (502) of the adjacent single stator segmented core (1), and the first end face (403) abuts against the second face (503) of the adjacent single stator segmented core (1).

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