Motor iron core heat exchange structure, motor iron core and motor
By distributing different types of heat exchange hole structures in the axial direction on the motor core, the uneven heat distribution problem caused by traditional motor heat exchange holes is solved, the heat resistance requirements are reduced, and the working efficiency and reliability of the motor are improved.
Patent Information
- Application Number
- CN202420537277.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-19
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-03-19
AI Technical Summary
The axial direction of the traditional motor heat exchange hole is consistent, resulting in a large difference in the temperature rise of the core at the fluid inlet end and the outflow end. The magnetic properties of the permanent magnets in the core at the outflow end of the original structure or coil insulation in the heat resistance of the permanent magnets in the core of the fluid outflow end of the original structure are selected. High requirements.
Different types of heat exchange hole structures are used to distribute along the axial direction of the motor core. By combining heat exchange hole structures with different heat exchange effects, the uniformity of the axial heat distribution of the iron core is improved.
It has achieved the improvement of uniformity of the axial heat distribution of the motor core, reduced the heat resistance requirements in the core at the outflow end of the fluid, and improved the working efficiency and reliability of the motor.
Smart Images
Figure CN222508910U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of motor technology, and in particular to a motor core heat exchange structure, a motor core and a motor. Background Art
[0002] Since the motor generates a lot of heat during operation, a number of heat exchange holes are usually set in the motor core to achieve heat exchange between the fluid at the core position and the core, thereby reducing the operating temperature of the motor.
[0003] At present, the axial size and shape of the heat exchange holes of traditional motors are consistent, which easily leads to a large difference in the temperature rise of the core at the fluid inlet end and the core temperature rise at the fluid outlet section. At the same time, the magnetic properties of the permanent magnets in the core at the fluid outlet end of the original structure or the coil insulation have high requirements on the heat resistance of the materials.
[0004] Currently, no effective solution has been proposed for the problems in the prior art. Utility Model Content
[0005] The embodiments of the present application provide a motor core heat exchange structure, a motor core and a motor, which at least solve the technical problem that the axial size and shape of the traditional motor heat exchange holes are consistent, which easily leads to a large difference between the core temperature rise at the fluid inlet end and the core temperature rise at the fluid outlet section.
[0006] According to one aspect of an embodiment of the present application, a motor core heat exchange structure is provided, comprising a motor core body, wherein heat exchange holes are opened along the axial direction of the motor core body, and at least two different types of heat exchange hole structures are arranged inside the heat exchange holes, and the multiple heat exchange hole structures are distributed in sequence along the axial direction of the motor core body.
[0007] Optionally, the heat exchange hole structure includes a first heat exchange hole structure, a second heat exchange hole structure and a third heat exchange hole structure; wherein: when the heat exchange holes have outer circular hole sizes with the same diameter, the heat exchange areas of the heat exchange hole structures are sorted as follows: the heat exchange area of the first heat exchange hole structure < the heat exchange area of the second heat exchange hole structure < the heat exchange area of the third heat exchange hole structure.
[0008] Optionally, the axial direction of the motor core body includes an axial front section and an axial rear section; wherein: the axial front section adopts the first heat exchange hole structure; the axial rear section adopts the second heat exchange hole structure or the third heat exchange hole structure.
[0009] Optionally, the axial direction of the motor core body includes an axial front section, an axial middle section and an axial rear section; wherein: the axial front section adopts the first heat exchange hole structure; the axial middle section adopts the first heat exchange hole structure or the second heat exchange hole structure; the axial rear section adopts the third heat exchange hole structure.
[0010] According to another aspect of an embodiment of the present application, a motor core is provided, wherein the motor core comprises a motor core body, and the motor core body adopts the above-mentioned motor core heat exchange structure.
[0011] Optionally, the motor core body includes a plurality of core units, each of the core units is provided with a plurality of the heat exchange holes, and the plurality of core units and the plurality of heat exchange holes are distributed along the circumference of the motor core body.
[0012] Optionally, the interval between the heat exchange holes between adjacent core units is not less than the interval between the heat exchange holes on the surface of each core unit.
[0013] Optionally, the heat exchange hole includes a first heat exchange hole, a second heat exchange hole and a third heat exchange hole; wherein: the first heat exchange hole and the third heat exchange hole have the same heat exchange hole structure combination; the second heat exchange hole and the first heat exchange hole do not have the same heat exchange hole structure combination; or, the second heat exchange hole and the third heat exchange hole do not have the same heat exchange hole structure combination.
[0014] Optionally, the motor core is a stator core or a rotor core.
[0015] According to another aspect of the embodiments of the present application, a motor is provided, comprising the above-mentioned motor core.
[0016] In the embodiment of the present application, the motor core heat exchange structure utilizes the principle that different types of heat exchange hole structures will result in different heat exchange powers and heat exchange hole temperature rises, and axially combines heat exchange hole structures with different heat exchange effects, thereby solving the technical problem that the axial size and shape of the traditional motor heat exchange holes are consistent, which easily leads to a large difference in the core temperature rise at the fluid inlet end and the core temperature rise at the fluid outlet section. The technical effect of improving the uniformity of axial heat distribution of the motor core with heat exchange holes and reducing the requirements for the heat resistance of the permanent magnet magnetic properties or coil insulation in the core of the original structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0018] Figure 1 A schematic diagram of a heat exchange structure of a motor core provided in an embodiment of the present application;
[0019] FIG. 2( a ) is a schematic diagram of a first heat exchange hole structure provided in an embodiment of the present application;
[0020] FIG2( b ) is a schematic diagram of a second heat exchange hole structure provided in an embodiment of the present application;
[0021] FIG2( c ) is a schematic diagram of a third heat exchange hole structure provided in an embodiment of the present application;
[0022] Figure 3 A schematic diagram of a heat exchange hole structure combination provided in an embodiment of the present application;
[0023] Figure 4 A schematic diagram of another heat exchange hole structure combination provided in an embodiment of the present application.
[0024] The above drawings include the following reference numerals:
[0025] 11. Motor core body; 12. Heat exchange hole. DETAILED DESCRIPTION
[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.
[0029] According to one aspect of an embodiment of the present application, a motor core heat exchange structure is provided. Figure 1 A schematic diagram of a heat exchange structure of a motor core provided in an embodiment of the present application, such as Figure 1As shown, the motor core heat exchange structure includes:
[0030] The motor core body 11 has heat exchange holes 12 extending through the periphery of the motor core body 11 along its axial direction. At least two different types of heat exchange hole structures are arranged inside the heat exchange hole 12 . The multiple heat exchange hole structures are sequentially distributed along the axial direction of the motor core body 11 .
[0031] The heat exchange holes 12 are used for the circulation of heat exchange fluids to achieve the purpose of cooling, dissipating heat or absorbing heat. A plurality of different types of heat exchange hole structures can form different heat exchange hole structure combinations, which can be applied inside the heat exchange holes 12 to significantly improve the uniformity of heat distribution of the motor core with heat exchange holes in the entire axial direction.
[0032] When the motor core body 11 is provided with a plurality of heat exchange holes 12, these heat exchange holes 12 have the same outer diameter. In addition, in order to meet the needs of actual application scenarios, the outer diameter of some of the heat exchange holes 12 can be adjusted accordingly, for example, the outer diameter can be increased or decreased.
[0033] In the embodiment of the present application, the motor core heat exchange structure utilizes the principle that different types of heat exchange hole structures will result in different heat exchange powers and heat exchange hole temperature rises, and axially combines heat exchange hole structures with different heat exchange effects, thereby solving the technical problem that the axial size and shape of the traditional motor heat exchange holes are consistent, which easily leads to a large difference in the core temperature rise at the fluid inlet end and the core temperature rise at the fluid outlet section. The technical effect of improving the uniformity of axial heat distribution of the motor core with heat exchange holes and reducing the requirements for the heat resistance of the permanent magnet magnetic properties or coil insulation in the core of the original structure.
[0034] As an optional embodiment, the above-mentioned heat exchange hole structure includes a first heat exchange hole structure, a second heat exchange hole structure and a third heat exchange hole structure; wherein: when the heat exchange holes 12 have an outer circular hole size with the same diameter, the heat exchange area of the heat exchange hole structure is ranked as follows: the heat exchange area of the first heat exchange hole structure < the heat exchange area of the second heat exchange hole structure < the heat exchange area of the third heat exchange hole structure.
[0035] Under the same conditions, the heat transfer area of the heat transfer hole structure is positively correlated with its heat transfer effect, that is, the larger the heat transfer area, the better the heat transfer effect, and vice versa. The differences between the heat transfer hole structures are mainly reflected in the different heat transfer sizes and shapes.
[0036] Figure 2(a) is a schematic diagram of the first heat exchange hole structure provided in an embodiment of the present application. As shown in Figure 2(a), when the heat exchange holes 12 have an outer circular hole size of the same diameter, the heat exchange area of the heat exchange hole structure is small and the heat exchange effect is low.
[0037] Figure 2(b) is a schematic diagram of the second heat exchange hole structure provided in an embodiment of the present application. As shown in Figure 2(b), when the heat exchange holes 12 have an outer circular hole size with the same diameter, the heat exchange area of the heat exchange hole structure is larger than the heat exchange area of the first heat exchange hole structure, and smaller than the heat exchange area of the third heat exchange hole structure. Its heat exchange effect is higher than that of the first heat exchange hole structure, but lower than that of the third heat exchange hole structure.
[0038] Figure 2(c) is a schematic diagram of the third heat exchange hole structure provided in an embodiment of the present application. As shown in Figure 2(c), when the heat exchange holes 12 have outer circular hole sizes with the same diameter, the heat exchange area of the heat exchange hole structure is larger and the heat exchange effect is higher.
[0039] In the embodiments of the present application, since heat exchange hole structures with different heat exchange sizes and shapes will result in different heat exchange powers and temperature rises of the heat exchange holes, they are applied inside the heat exchange holes 12 and arranged successively along the axial direction of the motor core body 11, thereby enhancing the ability to finely control the axial heat distribution of the motor core.
[0040] As an optional embodiment, the motor core body 11 includes an axial front section and an axial rear section in the axial direction; wherein: the axial front section adopts a first heat exchange hole structure; and the axial rear section adopts a second heat exchange hole structure or a third heat exchange hole structure.
[0041] Figure 3 A schematic diagram of a heat exchange hole structure combination provided in an embodiment of the present application, such as Figure 3 As shown, the heat exchange hole structure combination divides the axial shape of each heat exchange hole into two types, such as Figure 3 The axial front section ventilation hole adopts the structure shown in FIG2(a), and the axial rear section adopts the structure shown in FIG2(b) or the structure shown in FIG2(c).
[0042] In the embodiment of the present application, the motor core body 11 is divided into two main parts in the axial direction: an axial front section and an axial rear section. The axial front section adopts a first heat exchange hole structure with a small heat exchange area to initially perform gentle and uniform heat exchange. The axial rear section adopts a second heat exchange hole structure with a higher heat exchange efficiency or a third heat exchange hole structure with the highest heat exchange efficiency to achieve efficient discharge of accumulated heat.
[0043] As an optional embodiment, the axial direction of the motor core body 11 includes an axial front section, an axial middle section and an axial rear section; wherein: the axial front section adopts the first heat exchange hole structure; the axial middle section adopts the first heat exchange hole structure or the second heat exchange hole structure; and the axial rear section adopts the third heat exchange hole structure.
[0044] Figure 4 A schematic diagram of another heat exchange hole structure combination provided in an embodiment of the present application, such as Figure 4As shown, the heat exchange hole structure combination has different axial shapes for the three heat exchange holes numbered 1, 2, and 3. The axial shapes of the heat exchange holes numbered 1 and 3 are respectively divided into three sections and adopt the shapes shown in Figure 2(a), Figure 2(b), and Figure 2(c), while the axial shapes of the heat exchange holes numbered 2 are respectively divided into three sections and adopt the shapes shown in Figure 2(a), Figure 2(a), and Figure 2(c).
[0045] In the embodiment of the present application, the motor core body 11 is carefully divided into three areas along the axial direction: the axial front section, the axial middle section and the axial rear section. These three areas adopt different levels of heat exchange hole structures according to their heat exchange requirements. Specifically, the axial front section uses the first heat exchange hole structure to smoothly start the heat exchange process with its lower heat exchange intensity; the axial middle section flexibly adopts the first or second heat exchange hole structure to adapt to the different heat accumulation conditions that may occur in the middle section; and the axial rear section is fixed with the third heat exchange hole structure with the highest heat exchange efficiency to ensure the maximum discharge of accumulated heat and maintain a good cooling state of the motor core.
[0046] According to another aspect of an embodiment of the present application, a motor core is provided. The motor core includes a motor core body 11. The motor core body 11 adopts the above-mentioned motor core heat exchange structure.
[0047] As an optional embodiment, the motor core body 11 includes a plurality of core units, each core unit is provided with a plurality of heat exchange holes 12 , and the plurality of core units and the plurality of heat exchange holes 12 are distributed along the circumference of the motor core body 11 .
[0048] In the embodiment of the present application, the motor core body 11 is composed of a plurality of independent core units, each of which is provided with a plurality of heat exchange holes 12 for heat dissipation. These core units and the plurality of heat exchange holes 12 carried by them are evenly distributed along the circumference of the motor core body 11 to achieve all-round and multi-dimensional efficient heat dissipation.
[0049] As an optional embodiment, the interval between the heat exchange holes between adjacent core units is not less than the interval between the heat exchange holes on the surface of each core unit.
[0050] In the embodiment of the present application, the spacing between the heat exchange holes between adjacent core units is set to be no less than the spacing between the heat exchange holes on the surface of each core unit. Ensuring that there is enough circulation space between adjacent core units is conducive to the full flow of cooling medium and heat exchange through the heat exchange holes, thereby avoiding local heat accumulation and low heat conduction efficiency, helping to improve the uniformity and effectiveness of the overall heat dissipation performance, and also helping to maintain the temperature stability of the motor core during operation, extending the service life of the motor and improving its working reliability.
[0051] As an optional embodiment, the heat exchange hole 12 includes a first heat exchange hole, a second heat exchange hole and a third heat exchange hole; wherein: the first heat exchange hole and the third heat exchange hole have the same heat exchange hole structure combination; the second heat exchange hole and the first heat exchange hole do not have the same heat exchange hole structure combination; or, the second heat exchange hole and the third heat exchange hole do not have the same heat exchange hole structure combination.
[0052] Optionally, the heat exchange hole structure combination adopted by the first heat exchange hole and the third heat exchange hole is sequentially composed of the first heat exchange hole structure, the second heat exchange hole structure and the third heat exchange hole structure; the heat exchange hole structure combination adopted by the second heat exchange hole is sequentially composed of the first heat exchange hole structure, the first heat exchange hole structure and the third heat exchange hole structure.
[0053] As an optional embodiment, the motor core is a stator core or a rotor core.
[0054] That is, whether it is the stator core or the rotor core, the motor core body can adopt the above-mentioned motor core heat exchange structure, which not only significantly improves the uniformity of heat distribution of the motor core with heat exchange holes in the entire axial direction, but also effectively alleviates the problem of magnetic performance degradation of the permanent magnet inside the core at the fluid outflow end of the original structure due to high temperature, and also reduces the high-specification requirements for the heat resistance of the coil insulation material, thereby improving the overall working efficiency and durability of the motor.
[0055] According to another aspect of the embodiment of the present application, a motor is provided, the motor comprising the motor core, the motor core comprising the motor core heat exchange structure, and thus the motor comprises all the technical effects of the motor core heat exchange structure. Since the technical effects of the motor core heat exchange structure have been described in detail above, they will not be repeated here.
[0056] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0057] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.
[0058] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A motor core heat exchange structure, characterized in that: The invention comprises a motor core body (11), wherein a heat exchange hole (12) is formed through the periphery of the motor core body (11) along its axial direction, and at least two different types of heat exchange hole structures are arranged inside the heat exchange hole (12), and the plurality of heat exchange hole structures are sequentially distributed along the axial direction of the motor core body (11).
2. The motor core heat exchange structure according to claim 1, characterized in that: The heat exchange hole structure includes a first heat exchange hole structure, a second heat exchange hole structure and a third heat exchange hole structure; wherein: When the heat exchange holes (12) have an outer circular hole size of the same diameter, the heat exchange area of the heat exchange hole structure is ranked as follows: the heat exchange area of the first heat exchange hole structure < the heat exchange area of the second heat exchange hole structure < the heat exchange area of the third heat exchange hole structure.
3. The motor core heat exchange structure according to claim 2, characterized in that: The motor core body (11) includes an axial front section and an axial rear section in the axial direction; wherein: The axial front section adopts the first heat exchange hole structure; The axial rear section adopts the second heat exchange hole structure or the third heat exchange hole structure.
4. The motor core heat exchange structure according to claim 2, characterized in that: The motor core body (11) comprises an axial front section, an axial middle section and an axial rear section in the axial direction; wherein: The axial front section adopts the first heat exchange hole structure; The axial middle section adopts the first heat exchange hole structure or the second heat exchange hole structure; The axial rear section adopts the third heat exchange hole structure.
5. A motor core, characterized in that: The motor core comprises a motor core body (11), and the motor core body (11) adopts the motor core heat exchange structure according to any one of claims 1 to 4.
6. The motor core according to claim 5, characterized in that: The motor core body (11) comprises a plurality of core units, each of the core units is provided with a plurality of heat exchange holes (12), and the plurality of core units and the plurality of heat exchange holes (12) are distributed along the circumference of the motor core body (11).
7. The motor core according to claim 6, characterized in that: The heat exchange hole spacing between adjacent core units is not less than the heat exchange hole spacing on the surface of each core unit.
8. The motor core according to claim 6, characterized in that: The heat exchange holes include a first heat exchange hole, a second heat exchange hole and a third heat exchange hole; wherein: The first heat exchange hole and the third heat exchange hole have the same heat exchange hole structure combination; The second heat exchange hole and the first heat exchange hole do not have the same heat exchange hole structure combination; or, the second heat exchange hole and the third heat exchange hole do not have the same heat exchange hole structure combination.
9. The motor core according to any one of claims 5 to 8, characterized in that: The motor core is a stator core or a rotor core.
10. A motor, characterized in that: The motor comprises the motor core according to any one of claims 5 to 9.