Stator core structure and motor
By adopting the design of multiple punching groups and alternating stacked structural units in the stator core structure of the motor, punching sheets with different diameters are used to increase the heat dissipation area, which solves the problem of low cooling and heat exchange efficiency of the existing motor and improves the efficiency of the motor. Thermal capacity and power density.
Patent Information
- Application Number
- CN202420929064.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The stator core structure of existing motors is not highly heat exchange efficiency during cooling, resulting in insufficient heat dissipation capability of the motor, affecting the stator temperature and power density.
The stator core structure is composed of multiple punching sheets. Each punching group is formed by stacking multiple alternating stacking structural units. The alternating stacking structural units are stacked by first punching sheets and second punching sheets with different diameters. formed to increase the heat dissipation area.
The heat exchange efficiency between the cooling air and the stator core structure is improved, the heat dissipation capacity of the motor is enhanced, the stator temperature is reduced, and the power density is increased.
Smart Images
Figure CN222381406U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motors, and in particular to a stator core structure and a motor. Background Art
[0002] At present, the commonly used heat dissipation method for motors is to use the wind pressure generated by the fan to make the gas inside the motor flow. When the gas flows through the iron core and stator winding with higher temperature, heat exchange occurs with them. The heated hot air is cooled when passing through the cooler, and the cooler circulates again, thereby achieving the purpose of reducing the motor temperature.
[0003] Most existing stator cores are limited by the size of the stator core and the size of the ventilation duct, so that the air cannot obtain sufficient heat exchange when passing through the hotter stator core, resulting in low heat exchange efficiency between the cooling air and the core. The temperature difference between the hot air after heat exchange and the core is still large, affecting the heat dissipation of the motor. Utility Model Content
[0004] In order to solve the above problems at least to a certain extent, in the first aspect, the utility model provides a stator core structure, including a first punching sheet, a second punching sheet, a second protrusion and a ventilation duct, including a plurality of punching sheet groups, each of which is formed by stacking a plurality of alternating stacked structural units, and a ventilation duct is formed between two adjacent alternating stacked structural units, each of which is formed by stacking a first punching sheet and a second punching sheet, and the diameter of the first punching sheet is different from the diameter of the second punching sheet.
[0005] Optionally, the diameter of the first punching sheet is greater than the diameter of the second punching sheet.
[0006] Optionally, the outer peripheral portion of the first punching sheet extends radially to form a plurality of first protrusions arranged in a ring shape.
[0007] Optionally, the alternating stacked structural unit is formed by stacking a plurality of the second punches, one first punch and a plurality of the second punches in sequence, and the first protrusions on the first punches in each of the alternating stacked structural units are aligned with each other.
[0008] Optionally, the alternating stacked structural unit is formed by stacking a plurality of the second punches, one first punch and a plurality of the second punches in sequence, and the first protrusions on the first punches in each of the alternating stacked structural units are staggered.
[0009] Optionally, a diameter of the second punching sheet is greater than a diameter of the first punching sheet.
[0010] Optionally, the outer periphery of the second punching sheet extends radially to form a plurality of second protrusions arranged in a ring shape.
[0011] Optionally, the alternating stacked structural unit is formed by stacking a plurality of the first punches, one second punch and a plurality of the first punches in sequence, and the second protrusions on the second punches in each of the alternating stacked structural units are aligned with each other.
[0012] Optionally, the alternating stacked structural unit is formed by stacking a plurality of the first punches, one second punch and a plurality of the first punches in sequence, and the second protrusions on the second punches in each of the alternating stacked structural units are staggered.
[0013] In a second aspect, another embodiment of the utility model further provides a motor, comprising the above stator core structure.
[0014] Compared with the prior art, the utility model has the following beneficial effects:
[0015] By arranging the stator core structure to be composed of multiple punching sheet groups, each punching sheet group is formed by stacking multiple alternating stacking structural units, and each alternating stacking structural unit is formed by stacking a first punching sheet and a second punching sheet, and the diameter specifications of the first punching sheet and the second punching sheet are different, in other words, the diameter of the first punching sheet and the diameter of the second punching sheet are set to be larger and smaller, so that the punching sheet with a larger diameter will increase the heat dissipation area of the alternating stacking structural unit, thereby improving the heat exchange efficiency between the cooling air and the stator core structure when passing through the ventilation duct, improving the heat dissipation capacity of the motor, and then reducing the stator temperature of the motor and improving the power density. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the structure when the diameter of the second punching sheet in the stator core structure of the embodiment of the utility model is larger than that of the first punching sheet;
[0017] Figure 2 This is a front view of the stator core structure of the utility model embodiment when the diameter of the second punching sheet is larger than the first punching sheet;
[0018] Figure 3 This is a schematic structural diagram of the second punching sheet in the stator core structure of an embodiment of the utility model when the diameter of the second punching sheet is greater than that of the first punching sheet.
[0019] Figure 4 It is a schematic structural diagram of the first punching sheet in the stator core structure of the embodiment of the utility model when the diameter of the first punching sheet is larger than that of the second punching sheet;
[0020] Figure 5 The present invention is a stator core structure which is only composed of a plurality of first punching sheets stacked together in the prior art.
[0021] Description of reference numerals:
[0022] 1. First punch; 11. First protrusion; 2. Second punch; 21. Second protrusion; 3. Ventilation duct; 4. Alternating stacked structural units; 5. Punch group. DETAILED DESCRIPTION
[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0025] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment", "some embodiments", "exemplarily" and "one embodiment" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or embodiment are included in at least one embodiment or embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or embodiments in a suitable manner.
[0026] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.
[0027] like Figure 1 As shown, an embodiment of the utility model provides a stator core structure, including a first punching sheet 1, a second punching sheet 2, a second protrusion 21 and a ventilation duct 3, including a plurality of punching sheet groups 5, each punching sheet group 5 is formed by stacking a plurality of alternating stacking structure units 4, and a ventilation duct 3 is formed between two adjacent alternating stacking structure units 4, each alternating stacking structure unit 4 is formed by stacking a first punching sheet 1 and a second punching sheet 2, and the diameter of the first punching sheet 1 is different from the diameter of the second punching sheet 2.
[0028] Figure 5It is a stator core structure composed only of a plurality of first punching sheets 1 stacked together, which results in that when the cooling air passes through the ventilation duct 3, the cooling air cannot obtain sufficient heat exchange when passing through the hotter stator core structure, resulting in low heat exchange efficiency between the cooling air and the stator core structure, so that the temperature difference between the hot air after heat exchange and the stator core structure is still large, affecting the heat dissipation of the motor.
[0029] In this embodiment, the stator core structure is configured to be composed of a plurality of punching sheet groups 5, each punching sheet group 5 is formed by stacking a plurality of alternating stacking structural units 4, and each alternating stacking structural unit 4 is formed by stacking a first punching sheet 1 and a second punching sheet 2, and the diameter specifications of the first punching sheet 1 and the second punching sheet 2 are different. In other words, the diameter of the first punching sheet 1 and the diameter of the second punching sheet 2 are set to be larger and smaller. In this way, the punching sheet with a larger diameter will increase the heat dissipation area of the alternating stacking structural unit 4, thereby improving the heat exchange efficiency between the cooling air and the stator core structure when passing through the ventilation duct 3, improving the heat dissipation capacity of the motor, and then reducing the stator temperature of the motor and improving the power density.
[0030] Optionally, the diameter of the first punching sheet 1 is greater than the diameter of the second punching sheet 2 .
[0031] In this embodiment, since the diameter of the first punching sheet 1 is larger than that of the second punching sheet 2, the first punching sheet 1 has a larger surface area than the second punching sheet 2, so that the stator core structure exchanges heat with the surrounding air, thereby greatly reducing the temperature of the stator core structure and improving the heat dissipation capacity of the motor.
[0032] Alternatively, if Figure 5 As shown, the outer periphery of the first punching sheet 1 extends radially to form a plurality of first protrusions 11 arranged in an annular shape.
[0033] In this embodiment, Figure 5 In the figure, the first protrusion 11 can be a circle of continuously spaced tooth structures formed on the outer periphery of the first punch 1, and a circular track is formed on the outer side of the tooth structure, and the diameter of the circular track is greater than the diameter of the second punch 2. In this way, the surface area of the first punch 1 is greater than the surface area of the second punch 2.
[0034] Optionally, the alternating stacked structural unit 4 is formed by stacking a plurality of second punches 2, a first punch 1 and a plurality of second punches 2 in sequence, and the first protrusions 11 on the first punch 1 in each alternating stacked structural unit 4 are aligned with each other.
[0035] In this embodiment, the stacking method of a single alternating stacked structural unit 4 is to first stack a plurality of second punching sheets 2, then stack a first punching sheet 1, and finally stack a plurality of second punching sheets 2, thereby forming an alternating stacked structural unit 4, and repeating this method to cyclically stack a plurality of alternating stacked structural units 4 to form a punching sheet group 5, and a plurality of punching sheet groups 5 are stacked to form a stator core structure. Since each alternating stacked structural unit 4 has a first punching sheet 1, each punching sheet group 5 has a plurality of alternating stacked structural units 4, in other words, each punching sheet group 5 has a plurality of first punching sheets 1, and the first protrusions 11 on the outer periphery of the plurality of first punching sheets 1 are arranged in alignment with each other, so that the heat dissipation area of the stator core structure can be increased.
[0036] Optionally, the alternating stacked structural unit 4 is formed by stacking a plurality of second punches 2, a first punch 1 and a plurality of second punches 2 in sequence, and the first protrusions 11 on the first punch 1 in each alternating stacked structural unit 4 are staggered.
[0037] In this embodiment, the stacking method of a single alternating stacked structural unit 4 is to first stack a plurality of second punching sheets 2, then stack a first punching sheet 1, and finally stack a plurality of second punching sheets 2, and repeat this method to cyclically stack a plurality of alternating stacked structural units 4 to form a punching sheet group 5, and a plurality of punching sheet groups 5 are stacked to form a stator core structure. Since each alternating stacked structural unit 4 has a first punching sheet 1, each punching sheet group 5 has a plurality of alternating stacked structural units 4, in other words, each punching sheet group 5 has a plurality of first punching sheets 1, and the first protrusions 11 on the outer periphery of the plurality of first punching sheets 1 are staggered with each other (not shown in the figure), so that the technical effect of increasing the heat dissipation area of the stator core structure is also achieved.
[0038] like Figure 2 As shown, optionally, the diameter of the second punching sheet 2 is greater than the diameter of the first punching sheet 1 .
[0039] In this embodiment, since the diameter of the second punching sheet 2 is larger than that of the first punching sheet 1, the second punching sheet 2 has a larger surface area than the first punching sheet 1, so that the stator core structure can exchange heat with the surrounding air, thereby greatly reducing the temperature of the stator core structure and improving the heat dissipation capacity of the motor.
[0040] like Figure 3 As shown, optionally, the outer peripheral portion of the second punching sheet 2 extends radially to form a plurality of second protrusions 21 arranged in a ring shape.
[0041] In this embodiment, Figure 3In the figure, the second protrusion 21 can be a circle of continuously spaced tooth structures formed on the outer periphery of the second punch 2, and a circular track is formed on the outer side of the tooth structure, and the diameter of the circular track is greater than the diameter of the first punch 1. In this way, the surface area of the second punch 2 is greater than the surface area of the first punch 1.
[0042] like Figure 1 and Figure 2 As shown, optionally, the alternating stacked structural unit 4 is sequentially formed by stacking a plurality of first punches 1, a second punch 2, and a plurality of first punches 1, and the second protrusions 21 on the second punch 2 in each alternating stacked structural unit 4 are aligned with each other.
[0043] In this embodiment, the stacking method of a single alternating stacked structural unit 4 is to first stack a plurality of first punching sheets 1, then stack a second punching sheet 2, and finally stack a plurality of first punching sheets 1, thereby forming an alternating stacked structural unit 4, and repeating this method to cyclically stack a plurality of alternating stacked structural units 4 to form a punching sheet group 5, and a plurality of punching sheet groups 5 are stacked to form a stator core structure. Since each alternating stacked structural unit 4 has a second punching sheet 2, each punching sheet group 5 has a plurality of alternating stacked structural units 4, in other words, each punching sheet group 5 has a plurality of second punching sheets 2, and the second protrusions 21 on the outer periphery of the plurality of second punching sheets 2 are arranged in alignment with each other, so that the heat dissipation area of the stator core structure can be increased.
[0044] Optionally, the alternating stacked structural unit 4 is formed by stacking a plurality of first punches 1 , a second punch 2 , and a plurality of first punches 1 in sequence, and the second protrusions 21 on the second punch 2 in each alternating stacked structural unit 4 are staggered.
[0045] In this embodiment, the stacking method of a single alternating stacked structural unit 4 is to first stack a plurality of first punching sheets 1, then stack a second punching sheet 2, and finally stack a plurality of first punching sheets 1, thereby forming an alternating stacked structural unit 4, and repeating this method to cyclically stack a plurality of alternating stacked structural units 4 to form a punching sheet group 5, and a plurality of punching sheet groups 5 are stacked to form a stator core structure. Since each alternating stacked structural unit 4 has a second punching sheet 2, each punching sheet group 5 has a plurality of alternating stacked structural units 4, in other words, each punching sheet group 5 has a plurality of second punching sheets 2, and the second protrusions 21 on the outer periphery of the plurality of second punching sheets 2 are staggered with each other (not shown in the figure), so that the same technical effect of increasing the heat dissipation area of the stator core structure is achieved.
[0046] Another embodiment of the utility model further provides a motor, which includes the above stator core structure. Since the motor has the above stator core structure, it has the same advantages as above.
[0047] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.
Claims
1. A stator core structure, characterized in that: The invention comprises a first punch (1), a second punch (2), a second protruding portion (21) and a ventilation duct (3), and comprises a plurality of punch groups (5), each of the punch groups (5) being formed by stacking a plurality of alternating stacked structural units (4), a ventilation duct (3) being formed between two adjacent alternating stacked structural units (4), each of the alternating stacked structural units (4) being formed by stacking a first punch (1) and a second punch (2), and the diameter of the first punch (1) is different from the diameter of the second punch (2).
2. The stator core structure according to claim 1, characterized in that: The diameter of the first punching sheet (1) is greater than the diameter of the second punching sheet (2).
3. The stator core structure according to claim 2, characterized in that: The outer periphery of the first punching sheet (1) extends radially to form a plurality of first protrusions (11) arranged in an annular shape.
4. The stator core structure according to claim 3, characterized in that: The alternating stacked structural unit (4) is formed by stacking a plurality of the second punches (2), one first punch (1) and a plurality of the second punches (2) in sequence, and the first protrusions (11) on the first punch (1) in each of the alternating stacked structural units (4) are arranged in alignment with each other.
5. The stator core structure according to claim 3, characterized in that: The alternating stacked structural unit (4) is formed by stacking a plurality of the second punches (2), one first punch (1) and a plurality of the second punches (2) in sequence, and the first protrusions (11) on the first punch (1) in each of the alternating stacked structural units (4) are staggered.
6. The stator core structure according to claim 1, characterized in that: The diameter of the second punching sheet (2) is greater than the diameter of the first punching sheet (1).
7. The stator core structure according to claim 6, characterized in that: The outer periphery of the second punching sheet (2) extends radially to form a plurality of second protrusions (21) arranged in an annular shape.
8. The stator core structure according to claim 7, characterized in that: The alternating stacked structural unit (4) is formed by stacking a plurality of the first punches (1), one of the second punches (2), and a plurality of the first punches (1) in sequence, and the second protrusions (21) on the second punches (2) in each of the alternating stacked structural units (4) are aligned with each other.
9. The stator core structure according to claim 7, characterized in that: The alternating stacked structural unit (4) is formed by stacking a plurality of the first punches (1), one of the second punches (2), and a plurality of the first punches (1) in sequence, and the second protrusions (21) on the second punches (2) in each of the alternating stacked structural units (4) are staggered.
10. A motor, characterized in that: It comprises a stator core structure as described in any one of claims 2 to 5 or any one of claims 6 to 9.