Electronic punching sheet and motor with same
By setting a heat dissipation port and through holes on the outer ring of the electronic punching plate and adding auxiliary grooves to the ends of the stator teeth, the problems of poor heat dissipation and increased torque of the electronic punching plate are solved, and efficient heat dissipation and stable motor operation are achieved.
Patent Information
- Application Number
- CN202421724095.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-07-19
AI Technical Summary
The existing electronic punching plates generate a lot of heat during use, and the heat dissipation effect is poor. When the torque pulsation frequency is consistent with the motor mechanical resonance frequency, the harmonic content of the electrode cog torque will increase, resulting in the motor being unable to operate stably or be damaged.
A heat dissipation port and a through hole are provided on the outer ring of the punching sheet body, and an auxiliary groove is added to the end of the stator teeth to achieve all-round heat dissipation through the flow of coolant, while reducing the torque of the stator.
It improves the heat dissipation effect of the electronic punching plate, reduces the torque of the stator, ensures the stable operation of the motor and extends the service life.
Smart Images
Figure CN223079819U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic punching sheets, in particular to an electronic punching sheet and a motor with the electronic punching sheet. Background Technique
[0002] The electronic punching sheet is made of silicon steel sheets, which are used to support windings and affect the guiding of electromagnetic magnetic flux. The silicon steel sheets of about 0.3 mm are stamped into punching sheets of different specifications to be suitable for the stators and rotors of motors with different powers. The punching sheets are insulated from each other. The reason for insulation and stacking is to reduce the heat loss caused by eddy current. However, a large amount of heat will be generated when the existing electronic punching sheets are in use, and the heat is dissipated through the water channels on the motor housing. The contact area between the electronic punching sheet and the water channel is small, and the heat dissipation effect is average. Therefore, we introduce an electronic punching sheet and a motor with the structure of this punching sheet.
[0003] The existing technology has the following problems: 1. A large amount of heat will be generated when the existing electronic punching sheets are in use, and the heat is dissipated through the water channels on the motor housing. The contact area between the electronic punching sheet and the water channel is small, and the heat dissipation effect is average; 2. There is torque between the traditional electronic punching sheet and the rotor. When the motor is working, when the torque pulsation frequency is consistent with the mechanical resonance frequency of the motor, the harmonic content of the electrode cogging torque will increase, resulting in unstable operation or even damage of the motor. Content of the Utility Model
[0004] The purpose of the utility model is to provide an electronic punching sheet and a motor with the electronic punching sheet to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: An electronic punching sheet and a motor with the electronic punching sheet, including a rotor and a stator. The rotor is rotatably connected to the middle of the stator. The stator includes a plurality of punching sheet bodies. The inner circle of the punching sheet body is provided with a plurality of winding grooves and a plurality of stator teeth. The outer circle of the punching sheet body is provided with a plurality of heat dissipation openings.
[0006] Preferably, every two of the plurality of heat dissipation openings form a group, and several groups of heat dissipation openings are equally angularly distributed on the outer circle of the punching sheet body.
[0007] Preferably, the outer circle of the punching sheet body is provided with a yoke portion, and a plurality of through holes are opened in the middle of the yoke portion. The plurality of through holes are equally angularly distributed in the middle of the yoke portion of the punching sheet body.
[0008] Preferably, the side length of the plurality of through holes close to the punching sheet body is greater than the side length of the through holes close to the outer circle of the punching sheet body, and one side of the through hole close to the outer circle of the punching sheet body is composed of two triangular protrusions.
[0009] Preferably, two sets of auxiliary grooves are formed at the tooth ends of several stator teeth, and an installation groove is formed at one end of the several stator teeth away from the yoke portion. A heat dissipation pipe is arranged inside the installation groove.
[0010] Preferably, the two sets of auxiliary grooves are symmetrically distributed about the central axis of the heat dissipation pipe, and each set of auxiliary grooves includes two auxiliary grooves.
[0011] A motor with an electronic punching sheet includes a motor housing, and the above-mentioned electronic punching sheet is installed on the motor housing.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] In the present utility model, by flowing the coolant through the heat dissipation ports, the heat dissipation ports will increase the contact area between the coolant and the punching sheet body, improving the heat dissipation effect on the punching sheet body. The coolant flowing through the through holes cools the yoke portion of the punching sheet body. At the same time, since the bottom of the through holes is wider, it is more likely that the gas contained in the coolant will rise to the higher part of the channel and be discharged, preventing the cooling effect from being affected due to the docking of a large amount of air in the channel formed by the through holes. By adding auxiliary grooves at the ends of the stator teeth, the torque of the stator can be reduced. The principle of reducing the cogging torque by adding auxiliary grooves to the stator teeth is to increase the number of fundamental wave periods of the cogging torque. The cogging torque caused by the auxiliary grooves compensates for the original cogging torque of the slot teeth, thereby reducing the amplitude of the total cogging torque. At the same time, adding auxiliary grooves can also increase the equivalent air gap, which is also beneficial to reducing the cogging torque. Description of the Drawings
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0015] Figure 1 It is a partial cross-sectional top-down three-dimensional structural schematic diagram of the motor housing of the present utility model;
[0016] Figure 2 It is a front three-dimensional structural schematic diagram of the present utility model;
[0017] Figure 3 It is a top-down three-dimensional structural schematic diagram of the stator of the present utility model;
[0018] Figure 4 For the present utility model Figure 3 The enlarged schematic diagram at position A.
[0019] Explanation of the symbols and markings in the drawings:
[0020] 1. Motor housing; 2. Rotor; 3. Stator; 4. Laminated core body; 401. Winding slot; 402. Stator tooth; 402a. Auxiliary slot; 402b. Mounting slot; 402c. Heat dissipation pipe; 403. Heat dissipation port; 404. Yoke; 405. Through hole. Specific embodiments
[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0022] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: an electronic punching sheet and a motor with an electronic punching sheet, including a rotor 2 and a stator 3, the rotor 2 is rotatably connected to the middle of the stator 3, the stator 3 includes a plurality of laminated core bodies 4, a plurality of winding slots 401 and a plurality of stator teeth 402 are arranged on the inner ring of the laminated core body 4, and a plurality of heat dissipation ports 403 are opened on the outer ring of the laminated core body 4.
[0023] In this embodiment, as Figure 3 shown, a plurality of heat dissipation ports 403 are grouped in pairs, and a plurality of groups of heat dissipation ports 403 are equally angularly distributed on the outer ring of the laminated core body 4; when a plurality of laminated core bodies 4 are stacked together to form a stator 3, heat dissipation channels will be formed between the heat dissipation ports 403 at this time, and the coolant flows through the heat dissipation channels to take away the heat generated by the laminated core body 4, playing a role in heat dissipation. At the same time, the heat dissipation ports 403 will increase the contact area between the coolant and the laminated core body 4, further improving the heat dissipation effect on the laminated core body 4.
[0024] In this embodiment, as Figure 3 and Figure 4 shown, the outer ring of the laminated core body 4 is provided with a yoke 404, and a plurality of through holes 405 are opened in the middle of the yoke 404. A plurality of through holes 405 are equally angularly distributed in the middle of the yoke 404 of the laminated core body 4. The side length of the plurality of through holes 405 close to the side of the laminated core body 4 is greater than the side length of the through holes 405 close to the outer ring of the laminated core body 4, and one side of the through holes 405 close to the outer ring of the laminated core body 4 is composed of two triangular protrusions; when a plurality of laminated core bodies 4 are stacked together, the through holes 405 will also form a heat dissipation channel for the coolant to flow through, dissipating heat from the yoke 404 of the laminated core body 4. At the same time, since the bottom of the through holes 405 is wider, it can make the gas contained in the coolant more likely to rise to the high place of the channel and be discharged, preventing the cooling effect from being affected due to a large amount of air docking in the channel formed by the through holes 405.
[0025] In this embodiment, as Figure 4As shown in the figure, two sets of auxiliary grooves 402a are formed at the tooth ends of several stator teeth 402, and an installation groove 402b is formed at one end of the several stator teeth 402 away from the yoke 404. A heat dissipation pipe 402c is arranged inside the installation groove 402b; the heat dissipation pipe 402c can allow the coolant to flow through, so as to cool the inner ring part of the stator 3, and cooperate with the heat dissipation ports 403 and through holes 405 on the outer ring of the stator 3 to achieve all-round heat dissipation of the stator 3, so as to achieve the purpose of efficient heat dissipation.
[0026] In this embodiment, as Figure 4 shown, the two sets of auxiliary grooves 402a are symmetrically distributed about the central axis of the heat dissipation pipe 402c, and each set of auxiliary grooves 402a contains two auxiliary grooves 402a; by adding auxiliary grooves 402a at the ends of the stator teeth 402, the torque of the stator 3 can be reduced. The principle of reducing the cogging torque by opening the auxiliary grooves 402a in the stator teeth 402 is to increase the number of fundamental wave periods of the cogging torque. The cogging torque caused by the auxiliary grooves 402a compensates for the original cogging torque of the slot teeth, so that the amplitude of the total cogging torque is reduced. At the same time, opening the auxiliary grooves 402a can also increase the equivalent air gap, which is also beneficial to reducing the cogging torque.
[0027] The present utility model also provides a motor with an electronic punching sheet, including a motor housing 1, and the above-mentioned electronic punching sheet is installed on the motor housing 1.
[0028] The usage method and advantages of the present utility model: When the electronic punching sheet and the motor with the electronic punching sheet are in use, the working process is as follows:
[0029] By flowing the coolant through the heat dissipation ports 403, the heat dissipation ports 403 will increase the contact area between the coolant and the punching sheet body 4, improve the heat dissipation effect on the punching sheet body 4, and the coolant flowing through the through holes 405 cools the yoke 404 of the punching sheet body 4. At the same time, since the bottom of the through holes 405 is wider, it is more likely that the gas contained in the coolant will rise to the high part of the channel and be discharged, preventing the cooling effect from being affected due to the large amount of air docking in the channel formed by the through holes 405. By adding auxiliary grooves 402a at the ends of the stator teeth 402, the torque of the stator 3 can be reduced. The principle of reducing the cogging torque by opening the auxiliary grooves 402a in the stator teeth 402 is to increase the number of fundamental wave periods of the cogging torque. The cogging torque caused by the auxiliary grooves 402a compensates for the original cogging torque of the slot teeth, so that the amplitude of the total cogging torque is reduced. At the same time, opening the auxiliary grooves 402a can also increase the equivalent air gap, which is also beneficial to reducing the cogging torque.
[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.
[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.
[0032] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.
Claims
1. An electronic punching piece, comprising a rotor (2) and a stator (3), characterized in that: The rotor (2) is rotatably connected to the middle of the stator (3). The stator (3) includes a plurality of lamination cores (4). The inner ring of the lamination core (4) is provided with a plurality of winding grooves (401) and a plurality of stator teeth (402). The outer ring of the lamination core (4) is provided with a plurality of heat dissipation openings (403). Two groups of auxiliary grooves (402a) are provided at the tooth ends of the plurality of stator teeth (402), and an installation groove (402b) is provided at one end of the plurality of stator teeth (402) away from the yoke portion (404). A heat dissipation pipe (402c) is provided inside the installation groove (402b). The two groups of auxiliary grooves (402a) are symmetrically distributed about the central axis of the heat dissipation pipe (402c), and each group of auxiliary grooves (402a) includes two auxiliary grooves (402a).
2. An electronic punching sheet according to claim 1, characterized in that: The plurality of heat dissipation openings (403) are grouped in pairs, and the plurality of groups of heat dissipation openings (403) are equally angularly distributed on the outer ring of the lamination core (4).
3. An electronic punching sheet according to claim 1, characterized in that: The outer ring of the lamination core (4) is provided with a yoke portion (404). A plurality of through holes (405) are provided in the middle of the yoke portion (404). The plurality of through holes (405) are equally angularly distributed in the middle of the yoke portion (404) of the lamination core (4).
4. An electronic punching sheet according to claim 3, characterized in that: The side length of the plurality of through holes (405) close to the lamination core (4) is greater than the side length of the through holes (405) close to the outer ring of the lamination core (4), and one side of the through hole (405) close to the outer ring of the lamination core (4) is composed of two triangular protrusions.
5. A motor with an electronic punching sheet, comprising a motor housing (1), characterized in that: An electronic lamination as described in any one of claims 1-4 is installed on the motor housing (1).