Stator structure of automobile generator

Abstract

The invention relates to the technical field of generators, in particular to an automobile generator stator structure. Comprising a plurality of unit sheets, the unit sheets are stacked and then fixedly connected to form a stator core, each unit sheet comprises an annular silicon steel sheet, a plurality of supporting pieces are uniformly distributed and integrally formed on the inner circumference of each silicon steel sheet, each supporting piece comprises two winding teeth, and the two winding teeth of each supporting piece are far away from each other towards the end part of the axis of the corresponding silicon steel sheet; a plurality of corresponding winding teeth in the axial direction of the stator core form winding posts, and the stator winding is wound on the outer sides of two adjacent winding posts; the stator winding structure further comprises expanding blocks inserted between every two adjacent wrapping posts, the expanding blocks are detachably and fixedly connected with the stator core, and the expanding blocks enable the wrapping posts on the two sides of the expanding blocks to be far away from each other and tension the stator winding. When the stator winding is wound in the stator iron core, the winding tension does not need to be controlled, and the stator winding in the stator iron core is tensioned after the stator winding is wound, so that the winding efficiency of the stator winding is improved.

Description

Technical Field

[0001] The invention relates to the technical field of generators, and in particular to a stator structure of an automobile generator. Background Art

[0002] The stator of the generator is one of the key components of the generator. For high-voltage, large-capacity synchronous motors, a rotating magnetic pole structure is used. Since the capacity and voltage of the excitation part are often much smaller than the armature, the armature is installed on the stator and the main magnetic pole is installed on the rotor. The stator of the generator mainly acts to cut the magnetic field in the rotating magnetic field formed by the rotor to generate voltage. The stator core is the main magnetic circuit of the stator and is also the installation and fixing component of the stator winding.

[0003] When installing the stator winding, there is a certain relationship between the tightness of the stator winding and the motor speed. Loose stator winding will cause the motor speed to increase, while tight stator winding will reduce the motor speed. The reason is that the tightness of the stator winding will affect the distribution of the magnetic field, thereby affecting the output power of the motor. When the stator winding is loose, the gap between the stator core and the winding increases, resulting in a decrease in the saturation of the magnetic circuit, which in turn increases the motor output power and the motor speed. On the contrary, when the stator winding is tight, the gap between the stator core and the winding becomes smaller, the saturation of the magnetic circuit increases, resulting in a decrease in the output power and a decrease in the motor speed.

[0004] When winding the stator winding, the tension of the winding must be controlled to avoid the winding being too tight or too loose. Excessive tension will reduce the elasticity of the winding, making it difficult for the winding to fit the stator, affecting the magnetic field distribution between the stator and the rotor, and thus affecting the motor speed. Too little tension will also cause the winding to relax, resulting in a decrease in motor output power and a decrease in speed. However, when winding the stator winding in the stator core, the tension of the stator winding is inconvenient to control. For this reason, it is necessary to design a stator structure of an automotive generator to facilitate the control of the tightness of the stator winding. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a stator structure for an automobile generator, which is convenient for controlling the tightness of the stator winding and does not need to control the winding tension when winding the stator winding in the stator core. After the stator winding of the automobile generator stator structure is wound, the stator winding in the stator core is tensioned, thereby improving the efficiency of winding the stator winding.

[0006] In order to achieve the above object, the technical solution provided by the present invention is:

[0007] A stator structure of an automobile generator comprises a plurality of unit sheets, which are stacked and fixedly connected to form a stator core, wherein the unit sheets comprise an annular silicon steel sheet, wherein a plurality of support members are evenly distributed on the inner circumference of the silicon steel sheet and integrally formed, wherein the support member comprises two winding teeth, wherein the ends of the two winding teeth of the support member facing the axis of the silicon steel sheet are away from each other, and the corresponding plurality of winding teeth in the axial direction of the stator core form winding posts, wherein a stator winding is wound around the outer sides of two adjacent winding posts; and further comprising an expansion block inserted between two adjacent winding posts, wherein the expansion block is detachably and fixedly connected to the stator core, and wherein the expansion block causes the winding posts on both sides of the expansion block to be away from each other and tighten the stator winding.

[0008] Specifically, a plurality of limiting holes are formed on the silicon steel sheet, and a plurality of limiting rods respectively penetrate the plurality of limiting holes on the silicon steel sheet to fix and connect the plurality of silicon steel sheets.

[0009] Specifically, the expansion block is snap-connected to the stator core.

[0010] Specifically, a plurality of claws are fixed on both ends of the expansion block, the claws are elastic, and the hooks of the claws are hooked on the outside of the stator core.

[0011] Specifically, a guiding inclined surface is processed on the hook head of the clamping claw.

[0012] Specifically, the cross section of the expansion block is an isosceles trapezoid, and the width of the expansion block on a side facing the stator core is greater than the width of the expansion block on a side facing away from the stator core.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. When winding the stator winding in the stator core, there is no need to control the winding tension. After the stator winding is wound, the stator winding in the stator core is tensioned, thereby improving the efficiency of winding the stator winding.

[0015] 2. The expansion blocks of different specifications can be replaced to adjust the tightness of the stator winding, making it convenient to adjust the tightness of the stator winding.

[0016] 3. By setting the expansion block, the stator winding can be prevented from loosening, thereby improving the quality of the automobile generator stator.

[0017] 4. The expansion block is easy to disassemble. After the expansion block is disassembled, the stator winding is loose, which is convenient for replacing the stator winding after disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of a unit chip.

[0019] Figure 2 Schematic diagram of the structure of the stator core.

[0020] Figure 3This is a schematic diagram of the stator winding being wound around the outside of two adjacent winding poles.

[0021] Figure 4 It is a schematic diagram of the connection between the expansion block and the claw.

[0022] Figure 5 This is a schematic diagram of the stator structure of the automobile generator.

[0023] Figure 6 This is a schematic diagram of the stator structure of the automobile generator after the expansion block and the claws are hidden.

[0024] The names of the parts in the attached figure are: 1. Silicon steel sheet; 2. Winding teeth; 3. Limiting hole; 4. Limiting rod; 5. Stator winding; 6. Expanding support block; 7. Claw; 8. Guide ramp. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] like Figure 1-Figure 6 As shown, a stator structure of an automobile generator includes a plurality of unit sheets, which are stacked and fixedly connected to form a stator core.

[0027] The unit sheet includes an annular silicon steel sheet 1, and a plurality of support members are evenly distributed on the inner circumference of the silicon steel sheet 1 and integrally formed. The support member includes two winding teeth 2, and the ends of the two winding teeth 2 of the support member facing the axis of the silicon steel sheet 1 are away from each other.

[0028] Specifically, a plurality of limiting holes 3 are formed on the silicon steel sheet 1 , and a plurality of limiting rods 4 respectively penetrate through the plurality of limiting holes 3 on the silicon steel sheet 1 to fix and connect the plurality of silicon steel sheets 1 .

[0029] A plurality of winding teeth 2 corresponding to the axial direction of the stator core form a winding column, and the stator winding 5 is wound on the outside of two adjacent winding columns.

[0030] The stator winding 5 is tightened by the expansion block 6 inserted between two adjacent winding posts, and the expansion block 6 is detachably fixedly connected to the stator core. Specifically, the expansion block 6 is snap-connected to the stator core. The expansion block 6 keeps the winding posts on both sides away from each other and tightens the stator winding 5.

[0031] A plurality of claws 7 are fixed at both ends of the expansion block 6. The claws 7 are elastic, and the hooks of the claws 7 are hooked on the outside of the stator core. A guide slope 8 is processed on the hooks of the claws 7.

[0032] The cross section of the expansion block 6 is an isosceles trapezoid, and the width of the expansion block 6 on the side facing the stator core is greater than the width of the expansion block 6 on the side facing away from the stator core.

[0033] like Figure 2 As shown, when assembling the stator core, multiple silicon steel sheets 1 are first stacked together, with the winding teeth 2 on two adjacent silicon steel sheets 1 corresponding to each other, and then the limiting rod 4 is inserted into the limiting hole 3 to limit and fix the multiple silicon steel sheets 1.

[0034] like Figure 3 As shown, the stator winding 5 is wound around the outer sides of two adjacent winding posts. Then the expansion block 6 is inserted between the two winding posts inside the stator winding 5. During the insertion of the expansion block 6, the two winding posts inside the stator winding 5 move away from each other, and the stator winding 5 is tensioned after the two winding posts inside the stator winding 5 move away from each other.

[0035] During the insertion of the expansion block 6, after the guiding slope 8 of the claw head of the claw 7 contacts the stator core, as the expansion block 6 is continuously inserted, under the guiding action of the guiding slope 8, the claw 7 undergoes elastic deformation. When the claw head of the claw 7 is misaligned with the outer edge of the stator core, the claw 7 is restored, and the claw head of the claw 7 hooks the outer edge of the stator core. At this time, the expansion block 6 is stably installed on the stator core.

[0036] There is no need to control the winding tension when winding the stator winding 5 in the stator core. After the stator winding 5 is wound, the stator winding 5 in the stator core is tensioned, thereby improving the efficiency of winding the stator winding 5 .

[0037] The expansion blocks 6 of different specifications can be replaced to adjust the tightness 6 of the stator winding 5 , making it convenient to adjust the tightness of the stator winding 5 .

[0038] By providing the expansion block 6, the stator winding 5 can be prevented from loosening, thereby improving the quality of the automobile generator stator.

[0039] The expansion block 6 is convenient to disassemble. After the expansion block 6 is disassembled, the stator winding 5 is loosened, which makes it convenient to disassemble and replace the stator winding 5.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stator structure of an automobile generator, comprising a plurality of unit sheets, wherein the plurality of unit sheets are stacked and fixedly connected to form a stator core, wherein the unit sheets comprise an annular silicon steel sheet (1), characterized in that: A plurality of support members are evenly distributed on the inner circumference of a silicon steel sheet (1) and integrally formed thereon. The support member comprises two winding teeth (2). The ends of the two winding teeth (2) of the support member facing the axis of the silicon steel sheet (1) are away from each other. The corresponding plurality of winding teeth (2) in the axial direction of the stator core form winding columns. The stator winding (5) is wound around the outer sides of two adjacent winding columns. The support member also comprises an expansion block (6) inserted between the two adjacent winding columns. The expansion block (6) is detachably fixedly connected to the stator core. The expansion block (6) causes the winding columns on both sides of the expansion block (6) to be away from each other and tighten the stator winding (5).

2. The automobile generator stator structure according to claim 1, characterized in that: The silicon steel sheet (1) is provided with a plurality of limiting holes (3), and a plurality of limiting rods (4) respectively penetrate through the plurality of limiting holes (3) on the silicon steel sheet (1) to fix the plurality of silicon steel sheets (1) in connection.

3. The automobile generator stator structure according to claim 1, characterized in that: The expansion block (6) is snap-connected to the stator core.

4. The automobile generator stator structure according to claim 3, characterized in that: A plurality of claws (7) are fixed at both ends of the expansion and support block (6); the claws (7) are elastic, and hooks of the claws (7) are hooked on the outside of the stator core.

5. The automobile generator stator structure according to claim 4, characterized in that: A guide slope (8) is processed on the hook of the clamping claw (7).

6. The automobile generator stator structure according to claim 1, characterized in that: The cross section of the expansion block (6) is an isosceles trapezoid, and the width of the expansion block (6) on the side facing the stator core is greater than the width of the expansion block (6) on the side facing away from the stator core.

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