Layered stator core

Abstract

The utility model discloses a layered stator core, which relates to the field of stator cores, and is characterized in that the layered stator core comprises a plurality of first sheet layers and a plurality of second sheet layers which are stacked together, the first sheet layers are provided with first through grooves, the second sheet layers are provided with second through grooves, and the first through grooves and the second through grooves are communicated with each other. The first through groove penetrates through the inner side wall of the first sheet layer, and the second through groove penetrates through the outer side wall of the second sheet layer. According to the utility model, on the axial projection surface of the first sheet layer, the first through groove and the second through groove are partially overlapped to form a gas flow channel penetrating through the whole iron core, and the gas flow channel is respectively communicated with the inner side and the outer side of the iron core through the first through groove and the second through groove, so that the overall heat dissipation area of the iron core is increased; and in cooperation with an air cooling device in the motor, the heat dissipation effect of the iron core is ensured.

Description

Technical Field

[0001] This utility model relates to the field of stator cores, and more specifically, to a layered stator core. Background Technology

[0002] The stator core is a key component in an electric motor, primarily serving as a pathway for the magnetic field and supporting the stator windings. When the motor is running, the stator core is subjected to the magnetic field generated by the current flowing through the windings. This process produces hysteresis losses and eddy current losses, causing the stator core to heat up. Excessive temperature can adversely affect the stator core and its surrounding insulation materials. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a layered stator core.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a layered stator core, comprising a plurality of first layers and a plurality of second layers stacked together, wherein a first through groove is provided on the first layer and a second through groove is provided on the second layer, the first through groove and the second through groove are interconnected, the first through groove penetrates the inner sidewall of the first layer and the second through groove penetrates the outer sidewall of the second layer.

[0005] The present invention is further configured such that the first layer and the second layer are alternately arranged.

[0006] The present invention is further configured such that the width of the first through groove is greater than the width of the second through groove.

[0007] The present invention is further configured such that: positioning holes are provided on both the first layer and the second layer, and positioning pins are provided in the positioning holes, the positioning pins penetrating all the first layer and the second layer.

[0008] The present invention is further configured such that the number of the positioning pins is greater than or equal to two.

[0009] In summary, the present invention has the following beneficial effects: on the axial projection surface of the first layer, the first through groove and the second through groove partially overlap to form a gas flow channel that runs through the entire iron core. At the same time, the gas flow channel is connected to the inner side and the outer side of the iron core through the first through groove and the second through groove respectively, which increases the overall heat dissipation area of ​​the iron core. Combined with the air cooling device in the motor, the heat dissipation effect of the iron core is guaranteed. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2This is a schematic diagram of the structure of the first layer in this utility model;

[0012] Figure 3 This is a schematic diagram of the structure of the second layer in this utility model.

[0013] In the diagram: 1. First layer; 2. Second layer; 3. First through groove; 4. Second through groove; 5. Positioning hole; 6. Positioning pin. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0015] Example: A layered stator core, such as Figures 1-3 As shown, it includes several first layers 1 and several second layers 2 stacked together. A first through groove 3 is formed on the first layer 1, and a second through groove 4 is formed on the second layer 2. The first through groove 3 and the second through groove 4 are interconnected. The first through groove 3 penetrates the inner sidewall of the first layer 1, and the second through groove 4 penetrates the outer sidewall of the second layer 2.

[0016] Specifically, both the first layer 1 and the second layer 2 are silicon steel sheets. Along the axial direction of the first layer 1, the first through groove 3 penetrates the first layer 1, and the second through groove 4 penetrates the second layer 2. On the axial projection surface of the first layer 1, the first through groove 3 and the second through groove 4 partially overlap, forming a gas flow channel that runs through the entire iron core. At the same time, this air flow channel is connected to the inner side and the outer side of the iron core through the first through groove 3 and the second through groove 4, respectively, which increases the overall heat dissipation area of ​​the iron core. Combined with the air cooling device in the motor, this ensures the heat dissipation effect of the iron core.

[0017] like Figures 1-3 As shown, the first layer 1 and the second layer 2 are alternately arranged. The width of the first through groove 3 is greater than the width of the second through groove 4. Specifically, the number of the first layer 1 and the number of the second layer 2 are both four. The alternating first through groove 3 and second through groove 4 make the heat dissipation capacity of the iron core similar at all points in the axial direction. The cross-sectional area of ​​the first through groove 3 is larger, so that both sides of the second layer 2 have more area to contact the outside.

[0018] like Figures 1-3 As shown, positioning holes 5 are provided on both the first layer 1 and the second layer 2. Positioning pins 6 are provided in the positioning holes 5. The positioning pins 6 penetrate all the first layers 1 and the second layers 2. The number of positioning pins 6 is greater than or equal to two, specifically, there are two positioning pins 6. The positioning pins 6 that penetrate all the first layers 1 and the second layers 2 play an auxiliary alignment role for the first layers 1 and the second layers 2, ensuring the mutual cooperation of the first layers 1 and the second layers 2. The multiple positioning pins 6 restrict the relative rotation of the first layers 1 and the second layers 2, ensuring the structural stability of the combination of the first layers 1 and the second layers 2.

[0019] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A layered stator core, characterized in that: It includes several first layers (1) and several second layers (2) stacked together. The first layer (1) has a first through groove (3) and the second layer (2) has a second through groove (4). The first through groove (3) and the second through groove (4) are connected to each other. The first through groove (3) penetrates the inner sidewall of the first layer (1) and the second through groove (4) penetrates the outer sidewall of the second layer (2).

2. The layered stator core of claim 1, wherein: The first layer (1) and the second layer (2) are alternately arranged.

3. The layered stator core of claim 2, wherein: The width of the first through groove (3) is greater than the width of the second through groove (4).

4. The tiered stator core of claim 1, wherein: Positioning holes (5) are provided on the first layer (1) and the second layer (2), and positioning pins (6) are provided in the positioning holes (5). The positioning pins (6) penetrate all the first layers (1) and the second layers (2).

5. The layered stator core of claim 4, wherein: The number of the positioning pins (6) is greater than or equal to two.

Images