Iron core, stator, motor and vehicle

Abstract

The invention relates to an iron core, a stator, a motor and a vehicle. The iron core comprises at least two iron core segments. The at least two iron core sections are connected to form an annular iron core, and the iron core comprises a main body part and a yoke part which are arranged in a staggered mode in the circumferential direction of the iron core. Wherein the at least two iron core sections are sequentially connected in the circumferential direction of the iron core, and the joint of every two adjacent iron core sections is located on a main body part. And / or at least two iron core sections are sequentially connected along the radial direction of the iron core. Therefore, the thickness of the main body part and the yoke part does not need to be increased, and the axial size of the motor can be prevented from being influenced by the increase of the axial thickness of the iron core.

Description

Technical Field

[0001] The present application relates to the technical field of stator cores, and in particular to a core, a stator, a motor and a vehicle. Background Art

[0002] In the related art, the iron core made of SMC (Soft magnetic composite material) is usually formed by pressing. The pressure applied by the press to the iron core is positively correlated with the surface area of ​​the iron core. That is, the larger the surface area of ​​the iron core, the greater the pressure of the press and the heavier the tonnage. Therefore, the iron core is usually formed in sections, and multiple sections of finished products are spliced ​​to form the iron core. However, the current location of the iron core segment is usually located at the yoke of the iron core. In order to meet the structural strength, the yoke will be thickened, resulting in an increase in the axial thickness of the iron core, affecting the axial size of the motor. Summary of the invention

[0003] The embodiments of the present application provide an iron core, a stator, a motor and a vehicle, which do not require an increase in the thickness of a main body and a yoke, and can avoid affecting the axial size of the motor due to an increase in the axial thickness of the iron core, thereby at least partially solving the above-mentioned technical problems.

[0004] In order to achieve the above object, according to a first aspect of the present application, there is provided an iron core, comprising:

[0005] At least two core segments, wherein the at least two core segments are connected to form the annular core, and the core includes a main body and a yoke that are alternately arranged along its circumference;

[0006] Wherein, the at least two core segments are connected in sequence along the circumference of the core, and the connection point of each two adjacent core segments is located at one of the main body parts;

[0007] And / or, the at least two core segments are connected in sequence along the radial direction of the core.

[0008] Optionally, each of the core segments connected along the circumference of the core includes a first splicing segment and a second splicing segment located at two opposite ends thereof;

[0009] Among them, the first spliced ​​segment of one core segment is connected to the first spliced ​​segment of another core segment to form a main body, and the second spliced ​​segment of one core segment is connected to the second spliced ​​segment of another core segment to form a main body.

[0010] Optionally, the free end of the first splicing section is formed with a first stepped mating surface, and the free end of the second splicing section is formed with a second stepped mating surface;

[0011] Among them, the first mating surface of one core segment is connected to the first mating surface of another core segment, and the second mating surface of one core segment is connected to the second mating surface of another core segment.

[0012] Optionally, the first mating surface is constructed with a first positioning structure, and the first positioning structure of one core segment is connected to the first positioning structure of another core segment.

[0013] Optionally, the first mating surface includes a first surface and a third surface extending along the axial direction of the iron core, and a second surface extending along the radial direction of the iron core, and the first surface, the second surface and the third surface are connected in sequence to form the first mating surface in a stepped shape, wherein the first positioning structure is arranged on the first surface and the third surface, or the first positioning structure is arranged on the second surface.

[0014] Optionally, the first positioning structure includes a first positioning groove and a first positioning portion, both of which extend along the axial direction of the core, wherein one of the first positioning groove and the first positioning portion is arranged on the first surface, and the other is arranged on the third surface, and the first positioning portion of one core segment is connected to the first positioning groove of another core segment.

[0015] Optionally, the first positioning structure includes a first positioning hole and a first positioning protrusion, and the first positioning hole and the first positioning protrusion are both arranged on the second surface, wherein the first positioning protrusion of one core segment is connected to the first positioning hole of another core segment.

[0016] Optionally, the second mating surface is constructed with a second positioning structure, and the second positioning structure of one core segment is connected to the second positioning structure of another core segment.

[0017] Optionally, the second mating surface includes a fourth surface and a sixth surface extending along the axial direction of the iron core, and a fifth surface extending along the radial direction of the iron core, and the fourth surface, the fifth surface and the sixth surface are connected in sequence to form a stepped second mating surface, wherein the second positioning structure is arranged on the fourth surface and the sixth surface, or the second positioning structure is arranged on the fifth surface.

[0018] Optionally, the second positioning structure includes a second positioning groove and a second positioning portion, and the second positioning groove and the second positioning portion both extend along the axial direction of the core, wherein one of the second positioning groove and the second positioning portion is arranged on the fourth surface, and the other is arranged on the sixth surface, and the second positioning portion of one core segment is connected to the second positioning groove of another core segment.

[0019] Optionally, the second positioning structure includes a second positioning hole and a second positioning protrusion, and the second positioning hole and the second positioning protrusion are both arranged on the fifth surface, wherein the second positioning protrusion of one core segment is connected to the second positioning hole of another core segment.

[0020] Optionally, each of the core segments connected along the circumference of the core includes a first splicing segment and a second splicing segment located at two opposite ends thereof;

[0021] Wherein, the first spliced ​​section of one core segment is connected to the second spliced ​​section of another core segment.

[0022] Optionally, the free end of the first splicing section is formed with a first stepped mating surface, and the free end of the second splicing section is formed with a second stepped mating surface;

[0023] Wherein, the first mating surface of one of the core segments is connected to the second mating surface of another of the core segments.

[0024] Optionally, each of the core segments connected along the circumference of the core further comprises:

[0025] A main body segment, a first end of which is connected to the first splicing segment through a yoke, and a second end of which is connected to the second splicing segment through a yoke;

[0026] Wherein, the main body segment includes at least one main body part.

[0027] Optionally, each of the core segments connected along the radial direction of the core comprises:

[0028] At least two main body sub-segments spaced apart from each other along the circumference of the core;

[0029] A yoke sub-segment section, wherein one yoke sub-segment section is connected between every two adjacent main body sub-segment sections;

[0030] Among them, when the at least two core segments are connected in sequence along the radial direction of the core, at least two interconnected main body sub-segment sections located in the same radial direction of the core form a main body, and at least two interconnected yoke sub-segment sections located in the same radial direction of the core form a yoke.

[0031] Optionally, one of each two adjacent core segments is provided with a third positioning groove, and the other is provided with a third positioning portion connected to the third positioning groove, wherein the third positioning groove and the third positioning portion both extend along the axial direction of the core, and the third positioning groove and the third positioning portion are respectively located on one side of the two adjacent main body sub-segments facing each other.

[0032] Optionally, a slot segment extending along the radial direction of the core is constructed on the main body sub-segment, and when the at least two core segments are connected in sequence along the radial direction of the core, at least two of the slot segments located in the same radial direction of the core are interconnected to form a limit groove, and the limit groove is configured to connect the core cover plate.

[0033] Optionally, an adhesive layer is provided at the joint between each two adjacent core segments.

[0034] According to a second aspect of the present application, a stator is also provided, comprising the iron core as described above.

[0035] According to a third aspect of the present application, a motor is also provided, comprising the aforementioned stator.

[0036] According to a fourth aspect of the present application, a vehicle is also provided, comprising the aforementioned motor.

[0037] The core, stator, motor and vehicle of the embodiments of the present application are formed into a ring-shaped core by splicing at least two core segments, so as to reduce the pressing difficulty of the press and reduce the production cost of the core. At least two core segments are connected in sequence along the circumferential direction, and the connection point is located at the main body. Since the thickness of the main body is greater than the yoke, when splicing is performed at the position of the main body, the structural strength can meet the use requirements without increasing the thickness of the main body and the yoke. And or / , at least two core segments are connected in sequence along the radial direction. Since multiple core segments connected in the radial direction are bound to be spliced ​​at the position of the main body, the structural strength can meet the use requirements without increasing the thickness of the main body and the yoke. In this way, it is possible to avoid affecting the axial size of the motor due to the increase in the axial thickness of the core.

[0038] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0040] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0041] Figure 1 is a schematic diagram of a first structure of an iron core provided in an exemplary embodiment of the present application;

[0042] Figure 2 yes Figure 1 A schematic diagram of the structure of the core segments in the provided core;

[0043] Figure 3 yes Figure 2 The exploded view of the core segment joints provided in;

[0044] Figure 4 is a second structural schematic diagram of an iron core provided in an exemplary embodiment of the present application;

[0045] Figure 5 yes Figure 4 A schematic diagram of the structure of the core segments in the provided core;

[0046] Figure 6 is a third structural schematic diagram of the iron core provided in the exemplary embodiment of the present application;

[0047] Figure 7 yes Figure 6 A schematic diagram of the structure of the core segments in the provided core;

[0048] Figure 8 is another structural schematic diagram of a core segment provided in an exemplary embodiment of the present application;

[0049] Fig. 9 is another structural schematic diagram of a core segment provided in an exemplary embodiment of the present application;

[0050] Fig.10 is a fourth structural schematic diagram of an iron core provided in an exemplary embodiment of the present application;

[0051] Fig.11 yes Fig.10 A schematic diagram of the structure of the core segments in the provided core.

[0052] Description of reference numerals:

[0053] 1. core segment; 11. first splicing segment; 12. second splicing segment; 13. main segment; 14. first mating surface; 141. first surface; 142. second surface; 143. third surface; 15. second mating surface; 151. fourth surface; 152. fifth surface; 153. sixth surface;

[0054] 2. Main body; 21. Main body sub-section; 22. Third positioning groove; 23. Third positioning part; 24. Slot section; 25. Limiting groove;

[0055] 3. yoke; 31. yoke sub-section;

[0056] 41. First positioning groove; 42. First positioning portion; 43. First positioning hole; 44. First positioning protrusion; 45. Second positioning groove; 46. Second positioning portion; 47. Second positioning hole; 48. Second positioning protrusion. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0058] According to the first aspect of the present application, referring to Figures 1 to 11 The present application provides an iron core. The iron core includes at least two iron core segments 1. At least two iron core segments 1 are connected to form a ring-shaped iron core. The iron core includes a main body 2 and a yoke 3 arranged alternately along its circumference. Among them, at least two iron core segments 1 are connected in sequence along the circumference of the iron core, and the connection point of each two adjacent iron core segments 1 is located at a main body 2. And / or, at least two iron core segments 1 are connected in sequence along the radial direction of the iron core.

[0059] In an embodiment of the present application, a ring-shaped core is formed by splicing at least two core segments 1 to reduce the pressing difficulty of the press and reduce the production cost of the core. At least two core segments 1 are connected in sequence along the circumferential direction, and the connection point is located at the main body 2. Since the thickness of the main body 2 is greater than the yoke 3, when splicing is performed at the position of the main body 2, the structural strength can meet the use requirements without increasing the thickness of the main body 2 and the yoke 3. And or / , at least two core segments 1 are connected in sequence along the radial direction. Since multiple core segments 1 connected in the radial direction are bound to be spliced ​​at the position of the main body 2, the structural strength can meet the use requirements without increasing the thickness of the main body 2 and the yoke 3. In this way, it is possible to avoid affecting the axial size of the motor due to the increase in the axial thickness of the core.

[0060] It can be understood that the iron core is composed of multiple core segments 1 spliced ​​together. During the production stage, several core segments 1 can be produced to make the pressing area of ​​the press smaller, eliminating the need to use a high-power, high-performance press, and reducing the energy consumption of the press, thereby reducing manufacturing difficulty and manufacturing cost.

[0061] It should be noted that the main body 2 is the core body, and one core includes a plurality of main bodies 2 arranged at intervals. The yoke 3 is used to connect two adjacent main bodies 2. The yoke 3 is integrally formed with the main body 2. For example, the number of main bodies 2 can be set to 12.

[0062] It should be noted that the connection point of each two adjacent core segments 1 is located in the main body 2 means that the splicing position of each two adjacent core segments 1 is in the main body 2. When two core segments 1 are spliced, the splicing positions of the two core segments 1 can form a main body 2.

[0063] In some embodiments, the core segment 1 is an arc segment, at least two core segments 1 are sequentially connected along the circumference of the core, and the connection between every two adjacent core segments 1 is located at the main body 2. Thus, at least two core segments 1 are connected to form a ring-shaped core, and the connection between two adjacent core segments 1 has sufficient connection strength.

[0064] In some embodiments, the core segment 1 is arranged in an annular shape, and at least two core segments 1 are sequentially connected along the radial direction of the core, thereby connecting at least two core segments 1 to form an annular core, and the connection between two adjacent core segments 1 has sufficient connection strength.

[0065] In some embodiments, the core segment 1 is an arc segment, at least two core segments 1 are sequentially connected along the circumference of the core, and the connection between each two adjacent core segments 1 is located at the main body 2, thereby forming an annular structure. Multiple annular structures are sequentially connected along the radial direction of the core to form an annular core. In this way, it can also be ensured that the connection between two adjacent core segments 1 has sufficient connection strength.

[0066] like Figure 2 As shown, in some embodiments, each core segment 1 connected along the circumference of the core includes a first splicing segment 11 and a second splicing segment 12 located at opposite ends thereof. The first splicing segment 11 of one core segment 1 is connected to the first splicing segment 11 of another core segment 1 to form a main body 2. The second splicing segment of one core segment 1 is connected to the second splicing segment 12 of another core segment 1 to form a main body 2.

[0067] It can be understood that, for two adjacent core segments 1, they are connected to each other through their respective first splicing segments 11 to form a main body 2, or are connected to each other through their respective second splicing segments 12 to form a main body 2. In this way, the splicing of two adjacent core segments 1 is achieved. At the same time, it can be ensured that when at least two core segments 1 are connected along the circumferential direction, the connection position of each two adjacent core segments 1 is located at the main body 2.

[0068] like Figure 3 As shown, two core segments 1 are shown in the figure. The core segment 1 on the right is set upward as an example. When the two core segments 1 are spliced, one core segment 1 is set upward and the other core segment 1 is set downward, so that the first splicing segment 11 of one core segment 1 can be connected with the first splicing segment 11 of the other core segment 1, or the second splicing segment of one core segment 1 can be connected with the second splicing segment 12 of the other core segment 1, and a main body 2 is formed.

[0069] In some embodiments, the shape of the first splicing segment 11 is completely identical to the shape of the second splicing segment 12 .

[0070] In some embodiments, the first splicing section 11 is half of the main body 2, so that two first splicing sections 11 can form a main body 2 after splicing each other. The second splicing section 12 is also half of the main body 2, so that two second splicing sections 12 can form a main body 2 after splicing each other.

[0071] Based on the structures of the first splicing section 11 and the second splicing section 12 in the above embodiment and the connection method of two adjacent core segments 1, the structure of each core segment 1 can be made the same. In the actual production process, only one set of molds needs to be made, which can reduce research and development time, reduce production costs, and facilitate mass production of core segments 1.

[0072] Please continue reading Figure 2 In some embodiments, the free end of the first splicing segment 11 is formed with a stepped first mating surface 14. The free end of the second splicing segment 12 is formed with a stepped second mating surface 15. The first mating surface 14 of one core segment 1 is connected to the first mating surface 14 of another core segment 1. The second mating surface 15 of one core segment 1 is connected to the second mating surface 15 of another core segment 1.

[0073] It is understandable that the first mating surface 14 of the first splicing segment 11 is set to a stepped shape. When two adjacent core segments 1 are spliced ​​through the first splicing segment 11, the two step surfaces can be used to form a match to achieve rapid axial alignment of the two core segments 1, ensure rapid assembly, and enable axial limiting. The second mating surface 15 of the second splicing segment 12 is set to a stepped shape. When two adjacent core segments 1 are spliced ​​through the second splicing segment 12, the two step surfaces can be used to form a match to achieve rapid axial alignment of the two core segments 1, ensure rapid assembly, and enable axial limiting.

[0074] like Figure 6 As shown, in some embodiments, the first mating surface 14 is configured with a first positioning structure. The first positioning structure of one core segment 1 is connected to the first positioning structure of another core segment 1 .

[0075] It is understandable that when the two first mating surfaces 14 are connected, the two first positioning structures can be connected to each other, thereby achieving positioning and installation between the core segments 1. In this way, rapid assembly between the core segments 1 can be achieved.

[0076] It should be noted that the stepped first mating surface 14 can achieve axial positioning between the core segments 1, and the first positioning structure in this embodiment is particularly used to limit the radial position of the core segments 1. In this way, radial misalignment of the core segments 1 can be prevented to ensure the normal operation of the motor.

[0077] like Figure 2 and Figure 7 As shown, in some embodiments, the first mating surface 14 includes a first surface 141 and a third surface 143 extending in the axial direction of the core, and a second surface 142 extending in the radial direction of the core. The first surface 141, the second surface 142 and the third surface 143 are sequentially connected to form a stepped first mating surface 14. The first positioning structure is disposed on the first surface 141 and the third surface 143; or, the first positioning structure is disposed on the second surface 142.

[0078] It can be understood that when two adjacent core segments 1 are spliced, the first surface 141 of one core segment 1 fits with the third surface 143 of the other core segment 1, and the second surface 142 of one core segment 1 fits with the second surface 142 of the other core segment 1. The first positioning structure is set on the first surface 141 and the third surface 143. When the first surface 141 of one core segment 1 fits with the third surface 143 of the other core segment 1, the two first positioning structures can form a connection to achieve the guided installation and radial limitation of the core segment 1. Alternatively, the first positioning structure is set on the second surface 142. When the second surface 142 of one core segment 1 fits with the second surface 142 of the other core segment 1, the two first positioning structures can form a connection to achieve the radial limitation of the core segment 1.

[0079] Please continue reading Figure 2 and Figure 7 In some embodiments, the first positioning structure includes a first positioning groove 41 and a first positioning portion 42. The first positioning groove 41 and the first positioning portion 42 both extend along the axial direction of the core. One of the first positioning groove 41 and the first positioning portion 42 is disposed on the first surface 141, and the other is disposed on the third surface 143. The first positioning portion 42 of one core segment 1 is connected to the first positioning groove 41 of another core segment 1.

[0080] It can be understood that, since both the first positioning groove 41 and the first positioning portion 42 extend along the axial direction of the core, when the first positioning portion 42 is engaged with the first positioning groove 41, the two core segments 1 can only move along the axial direction, thereby achieving radial limitation of the core segments 1.

[0081] In some embodiments, the first positioning groove 41 is disposed on the first surface 141, and the first positioning portion 42 is disposed on the third surface 143. When the first surface 141 of one core segment 1 is in contact with the third surface 143 of another core segment 1, the corresponding first positioning portion 42 can be snapped into the first positioning groove 41 to achieve radial positioning of the core segment 1.

[0082] In some embodiments, the first positioning groove 41 is disposed on the third surface 143, and the first positioning portion 42 is disposed on the first surface 141. When the first surface 141 of one core segment 1 is in contact with the third surface 143 of another core segment 1, the corresponding first positioning portion 42 can be snapped into the first positioning groove 41 to achieve radial positioning of the core segment 1.

[0083] In some embodiments, the first surface 141 is provided with a first positioning groove 41 and a first positioning portion 42, and the first positioning groove 41 and the first positioning portion 42 are arranged at intervals. The third surface 143 is also provided with a first positioning groove 41 and a first positioning portion 42, and the first positioning groove 41 and the first positioning portion 42 are arranged at intervals. When the first surface 141 of one core segment 1 is in contact with the third surface 143 of another core segment 1, the corresponding first positioning portion 42 can be snapped into the first positioning groove 41 to achieve radial positioning of the core segment 1.

[0084] It should be noted that when the distance between the first surface 141 and the yoke 3 is smaller than the distance between the second surface 142 and the yoke 3 , it is preferred to dispose the first positioning portion 42 on the first surface 141 and the first positioning groove 41 on the second surface 142 .

[0085] In the embodiment of the present application, based on the arrangement of the first positioning portion 42 and the first positioning groove 41 , the matching area between the first surface 141 and the third surface 143 can be increased, thereby increasing the bonding area in the subsequent bonding process and improving the connection strength of the two adjacent core segments 1 .

[0086] like Figure 2 and Figure 8 As shown, in some embodiments, the first positioning structure includes a first positioning hole 43 and a first positioning protrusion 44. The first positioning hole 43 and the first positioning protrusion 44 are both disposed on the second surface 142. The first positioning protrusion 44 of one core segment 1 is connected to the first positioning hole 43 of another core segment 1.

[0087] It is understandable that when the second surface 142 of one core segment 1 fits with the second surface 142 of another core segment 1, the first positioning protrusion 44 is engaged in the first positioning hole 43. Based on the engagement between the first positioning protrusion 44 and the first positioning hole 43, radial positioning between two adjacent core segments 1 can be achieved.

[0088] like Figure 8 and Fig. 9 As shown, for two adjacent core segments 1, in order to enable the two to be connected, the first positioning holes 43 and the first positioning protrusions 44 of the two adjacent core segments 1 are arranged in opposite positions, so that the first positioning protrusion 44 of one core segment 1 can be snapped into the first positioning hole 43 of the other core segment 1.

[0089] In the embodiment of the present application, based on the arrangement of the first positioning hole 43 and the first positioning protrusion 44 , the matching area between the two second surfaces 142 can be increased, thereby increasing the bonding area in the subsequent bonding process and improving the connection strength of the two adjacent core segments 1 .

[0090] like Figure 6 As shown, in some embodiments, the second mating surface 15 is configured with a second positioning structure. The second positioning structure of one core segment 1 is connected to the second positioning structure of another core segment 1 .

[0091] It is understandable that when the two second mating surfaces 15 are connected, the two second positioning structures can be connected to each other, thereby achieving positioning and installation between the core segments 1. Thus, rapid assembly between the core segments 1 can be achieved.

[0092] It should be noted that the stepped second mating surface 15 can achieve axial positioning between the core segments 1, and the second positioning structure in this embodiment is particularly used to limit the radial position of the core segments 1. In this way, radial misalignment of the core segments 1 can be prevented to ensure the normal operation of the motor.

[0093] Please continue reading Figure 2 and Figure 7 In some embodiments, the second mating surface 15 includes a fourth surface 151 and a sixth surface 153 extending along the axial direction of the core, and a fifth surface 152 extending along the radial direction of the core. The fourth surface 151, the fifth surface 152 and the sixth surface 153 are sequentially connected to form a stepped second mating surface 15. The second positioning structure is disposed on the fourth surface 151 and the sixth surface 153; or, the second positioning structure is disposed on the fifth surface 152.

[0094] It can be understood that when two adjacent core segments 1 are spliced, the fourth surface 151 of one core segment 1 fits with the sixth surface 153 of the other core segment 1, and the fifth surface 152 of one core segment 1 fits with the fifth surface 152 of the other core segment 1. The second positioning structure is set on the fourth surface 151 and the sixth surface 153. When the fourth surface 151 of one core segment 1 fits with the sixth surface 153 of the other core segment 1, the two second positioning structures can form a connection to achieve the guided installation and radial limitation of the core segment 1. Alternatively, the second positioning structure is set on the fifth surface 152. When the fifth surface 152 of one core segment 1 fits with the fifth surface 152 of the other core segment 1, the two second positioning structures can form a connection to achieve the radial limitation of the core segment 1.

[0095] Please continue reading Figure 2 and Figure 7 In some embodiments, the second positioning structure includes a second positioning groove 45 and a second positioning portion 46. The second positioning groove 45 and the second positioning portion 46 both extend along the axial direction of the core. One of the second positioning groove 45 and the second positioning portion 46 is disposed on the fourth surface 151, and the other is disposed on the sixth surface 153. The second positioning portion 46 of one core segment 1 is connected to the second positioning groove 45 of another core segment 1.

[0096] It can be understood that since the second positioning groove 45 and the second positioning portion 46 both extend along the axial direction of the core, when the second positioning portion 46 is engaged with the second positioning groove 45, the two core segments 1 can only move along the axial direction, thereby achieving radial limitation of the core segments 1.

[0097] In some embodiments, the second positioning groove 45 is disposed on the fourth surface 151, and the second positioning portion 46 is disposed on the sixth surface 153. When the fourth surface 151 of one core segment 1 is in contact with the sixth surface 153 of another core segment 1, the corresponding second positioning portion 46 can be snapped into the second positioning groove 45 to achieve radial positioning of the core segment 1.

[0098] In some embodiments, the second positioning groove 45 is disposed on the sixth surface 153, and the second positioning portion 46 is disposed on the fourth surface 151. When the fourth surface 151 of one core segment 1 is in contact with the sixth surface 153 of another core segment 1, the corresponding second positioning portion 46 can be snapped into the second positioning groove 45 to achieve radial positioning of the core segment 1.

[0099] In some embodiments, the fourth surface 151 is provided with a second positioning groove 45 and a second positioning portion 46, and the second positioning groove 45 and the second positioning portion 46 are arranged at intervals. The sixth surface 153 is also provided with a second positioning groove 45 and a second positioning portion 46, and the second positioning groove 45 and the second positioning portion 46 are arranged at intervals. When the fourth surface 151 of one core segment 1 is in contact with the sixth surface 153 of another core segment 1, the corresponding second positioning portion 46 can be snapped into the second positioning groove 45 to achieve radial positioning of the core segment 1.

[0100] It should be noted that when the distance between the fourth surface 151 and the yoke 3 is smaller than the distance between the sixth surface 153 and the yoke 3 , it is preferred to dispose the second positioning portion 46 on the fourth surface 151 and the second positioning groove 45 on the sixth surface 153 .

[0101] In the embodiment of the present application, based on the arrangement of the second positioning portion 46 and the second positioning groove 45 , the matching area between the fourth surface 151 and the sixth surface 153 can be increased, thereby increasing the bonding area in the subsequent bonding process and improving the connection strength of the two adjacent core segments 1 .

[0102] like Figure 2 and Figure 8 As shown, in some embodiments, the second positioning structure includes a second positioning hole 47 and a second positioning protrusion 48. The second positioning hole 47 and the second positioning protrusion 48 are both disposed on the fifth surface 152. The second positioning protrusion 48 of one core segment 1 is connected to the second positioning hole 47 of another core segment 1.

[0103] It is understandable that when the fifth surface 152 of one core segment 1 is in contact with the fifth surface 152 of another core segment 1, the second positioning protrusion 48 is engaged with the second positioning hole 47. Based on the engagement between the second positioning protrusion 48 and the second positioning hole 47, radial positioning between two adjacent core segments 1 can be achieved.

[0104] like Figure 8 and Fig. 9 As shown, for two adjacent core segments 1, in order to enable the two to be connected, the second positioning holes 47 and the second positioning protrusions 48 of the two adjacent core segments 1 are arranged in opposite positions, so that the second positioning protrusion 48 of one core segment 1 can be snapped into the second positioning hole 47 of the other core segment 1.

[0105] In the embodiment of the present application, based on the arrangement of the second positioning hole 47 and the second positioning protrusion 48 , the matching area between the two fifth surfaces 152 can be increased, thereby increasing the bonding area in the subsequent bonding process and improving the connection strength of the two adjacent core segments 1 .

[0106] like Figure 4 and Figure 5As shown, in some embodiments, each core segment 1 connected along the circumference of the core includes a first splicing segment 11 and a second splicing segment 12 located at opposite ends thereof. The first splicing segment 11 of one core segment 1 is connected to the second splicing segment 12 of another core segment 1.

[0107] It can be understood that, for two adjacent core segments 1, the first splicing segment 11 and the second splicing segment 12 are connected to form a main body 2. Thus, the splicing of two adjacent core segments 1 is achieved. At the same time, it can be ensured that when at least two core segments 1 are connected along the circumferential direction, the connection position of each two adjacent core segments 1 is located at the main body 2.

[0108] In some embodiments, the shape of the first splicing section 11 is exactly the same as the shape of the second splicing section 12. Alternatively, the shape of the first splicing section 11 is different from the shape of the second splicing section 12, so that the two can be spliced ​​to form a main body 2.

[0109] In some embodiments, the first splicing section 11 is one half of the main body 2 , and the second splicing section 12 is also one half of the main body 2 , so that the two second splicing sections 12 can form a main body 2 after being spliced ​​together.

[0110] In some embodiments, the free end of the first splicing segment 11 forms a stepped first mating surface 14. The free end of the second splicing segment 12 forms a stepped second mating surface 15. The first mating surface 14 of one core segment 1 is connected to the second mating surface 15 of another core segment 1.

[0111] It can be understood that the first mating surface 14 of the first splicing segment 11 is set to a stepped shape, and the second mating surface 15 of the second splicing segment 12 is also set to a stepped shape. When two adjacent core segments 1 are spliced ​​through the first mating surface 14 of the first splicing segment 11 and the second mating surface 15 of the second splicing segment 12, the two step surfaces can be used to form a match to achieve rapid axial alignment of the two core segments 1, ensure rapid assembly, and perform axial limiting.

[0112] Based on the structures of the first splicing section 11 and the second splicing section 12 in the above embodiment and the connection method of two adjacent core segments 1, the structure of each core segment 1 can be made the same. In the actual production process, only one set of molds needs to be made, which can reduce research and development time, reduce production costs, and facilitate mass production of core segments 1.

[0113] In some embodiments, the first mating surface 14 and the second mating surface 15 may also be configured as curved surfaces, etc., so that the two can be spliced ​​together to form the main body 2 .

[0114] like Figure 2As shown, in some embodiments, each core segment 1 connected along the circumference of the core further includes a main body segment 13. The first end of the main body segment 13 is connected to the first splicing segment 11 through a yoke 3. The second end of the main body segment 13 is connected to the second splicing segment 12 through a yoke 3. The main body segment 13 includes at least one main body 2.

[0115] It is understandable that, by including the main body segment 13, the core segment 1 can be extended by a certain distance in the circumferential direction, so that one core corresponds to a smaller number of core segments 1. Thus, the number of splicing times can be reduced and the splicing efficiency can be improved.

[0116] In some embodiments, each main body segment 13 includes only one main body portion 2. At this time, both ends of the main body portion 2 are connected to the first splicing segment 11 and the second splicing segment 12 through the yoke 3, respectively.

[0117] In some embodiments, each main body segment 13 includes at least two main body parts 2. At this time, each two adjacent main body parts 2 are connected by a yoke part 3, and the two main body parts 2 located at the edge are respectively connected to the first splicing segment 11 and the second splicing segment 12 through the yoke part 3. For example, the main body segment 13 includes two main body parts 2.

[0118] like Fig.10 and Fig.11 As shown, in some embodiments, each core segment 1 connected along the radial direction of the core includes a main body sub-segment section 21 and a yoke sub-segment section 31. There are at least two main body sub-segment sections 21, and at least two are arranged at intervals along the circumference of the core. A yoke sub-segment section 31 is connected between each two adjacent main body sub-segment sections 21. Among them, when at least two core segments 1 are connected in sequence along the radial direction of the core, at least two interconnected main body sub-segment sections 21 located in the same radial direction of the core form a main body 2, and at least two interconnected yoke sub-segment sections 31 located in the same radial direction of the core form a yoke 3.

[0119] It is understandable that when at least two core segments 1 are spliced, at least two main body sub-segment sections 21 can be connected to each other, and the main body sub-segment sections 21 located in the same radial direction can form a main body 2. Thus, the splicing position passes through the main body 2, which can ensure the splicing strength without increasing the thickness of the main body 2 and the yoke 3.

[0120] It should be noted that the main body sub-segment section 21 and the yoke sub-segment section 31 are integrally formed. Each core segment 1 is configured to be annular, and each main body sub-segment section 21 and each yoke sub-segment section 31 are configured to be arc-shaped. Of two adjacent core segments 1, the inner diameter of the core segment 1 located on the outside is equal to the outer diameter of the core segment 1 located on the inside.

[0121] For example, the number of core segments 1 is four, and the four annular core segments 1 are spliced ​​together to form a circular annular core.

[0122] In some embodiments, one of every two core segments 1 is provided with a third positioning groove 22, and the other is provided with a third positioning portion 23 connected to the third positioning groove 22. The third positioning groove 22 and the third positioning portion 23 both extend along the axial direction of the core. The third positioning groove 22 and the third positioning portion 23 are respectively located on the side of two adjacent main body sub-segments 21 facing each other.

[0123] It can be understood that the third positioning groove 22 and the third positioning portion 23 extending along the axial direction of the core cooperate with each other so that the two adjacent core segments 1 can only slide along the axial direction when assembled, so as to limit the circumferential position of the two adjacent core segments 1 and prevent the core segments 1 from rotating relative to each other and becoming misaligned, causing changes in the magnetic field inside the motor and affecting the stable operation of the motor.

[0124] For example, the third positioning groove 22 is provided in the main body sub-segment section 21 of the core segment 1 located in the inner ring, and the third positioning portion 23 is provided in the main body sub-segment section 21 of the core segment 1 located in the outer ring. Alternatively, the third positioning groove 22 is provided in the main body sub-segment section 21 of the core segment 1 located in the outer ring, and the third positioning portion 23 is provided in the main body sub-segment section 21 of the core segment 1 located in the inner ring.

[0125] It should be noted that the core segments 1 located in the outermost ring are only provided with the third positioning grooves 22 or the third positioning portions 23 on their inner rings. The core segments 1 located in the innermost ring are only provided with the third positioning grooves 22 or the third positioning portions 23 on their outer rings.

[0126] In the embodiment of the present application, based on the arrangement of the third positioning portion 23 and the third positioning groove 22 , the matching area between the two core segments 1 can be increased, thereby increasing the bonding area in the subsequent bonding process and improving the connection strength of the two adjacent core segments 1 .

[0127] In some embodiments, a slot section 24 extending in the radial direction of the core is configured on the main body sub-segment 21. When at least two core segments 1 are sequentially connected in the radial direction of the core, at least two slot sections 24 located in the same radial direction of the core are interconnected to form a limiting slot 25. The limiting slot 25 is configured to connect the core cover plate.

[0128] It can be understood that after a plurality of slot segments 24 form the limiting slot 25, the limiting portion on the core cover plate can be connected to the limiting slot 25, thereby preventing the core segments 1 from being misaligned in the axial direction.

[0129] It should be noted that each main body sub-segment 21 may be provided with groove segments 24 on both sides of its axial direction, and each main body sub-segment 21 may also be provided with groove segments 24 on both sides of its circumferential direction.

[0130] In some embodiments, an adhesive layer is provided at the joint of every two adjacent core segments 1 .

[0131] It is understandable that an adhesive layer is provided at the joint of two adjacent core segments 1, so that the two adjacent core segments 1 can be bonded together by the adhesive layer while being spliced ​​together by the splicing structure, further ensuring the reliability of the connection between the core segments 1. At the same time, by bonding the two adjacent core segments 1 by the adhesive layer, the axial position limiting between the two adjacent core segments 1 can also be achieved.

[0132] Specifically, glue, epoxy resin, etc. can be coated on the first mating surface 14, the second mating surface 15 and the third mating surface. When two adjacent core segments 1 are spliced, an adhesive layer can be formed to achieve a reliable connection between the two adjacent core segments 1.

[0133] According to a second aspect of the present application, a stator is provided, the stator comprising the above-mentioned iron core. The stator has all the beneficial effects of the above-mentioned iron core, which will not be described in detail in the present application.

[0134] In some embodiments, the stator further comprises a coil winding, and the coil winding is connected to the iron core. Specifically, the coil winding can be provided in plurality, and each main body 2 can be provided with a coil winding.

[0135] According to a third aspect of the present application, a motor is provided, which includes the above-mentioned stator. The motor has all the beneficial effects of the above-mentioned stator, which will not be described in detail in the present application.

[0136] In some embodiments, the motor further comprises a housing and a rotor. The stator and the rotor are both disposed in the housing. The rotor rotates relative to the stator. The rotor is used to connect the rotating shaft so as to drive the rotating shaft to rotate by the rotor.

[0137] According to a fourth aspect of the present application, a vehicle is provided, which includes the above-mentioned motor. The vehicle has all the beneficial effects of the above-mentioned motor, which will not be described in detail in the present application.

[0138] In some embodiments, the vehicle further comprises a vehicle body. The motor is mounted on the vehicle body. The motor may be provided in four numbers, and the four motors are respectively close to four wheels of the vehicle body, so that one motor drives one wheel to rotate. Of course, the installation position of the motor may also be reasonably selected based on the driving mode of the vehicle.

[0139] The vehicle may be a fuel vehicle, a plug-in hybrid vehicle or a new energy vehicle, etc., and this application does not make any specific limitation on this.

[0140] In the description of this application, the terms "first" and "second" 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 one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0141] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0142] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0143] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. An iron core, characterized in that: include: At least two core segments, wherein the at least two core segments are connected to form the annular core, and the core includes a main body and a yoke that are alternately arranged along its circumference; Wherein, the at least two core segments are connected in sequence along the circumference of the core, and the connection point of each two adjacent core segments is located at one of the main body parts; And / or, the at least two core segments are connected in sequence along the radial direction of the core.

2. The core according to claim 1, characterized in that Each of the core segments connected along the circumference of the core includes a first splicing segment and a second splicing segment located at two opposite ends thereof; Among them, the first spliced ​​segment of one core segment is connected to the first spliced ​​segment of another core segment to form a main body, and the second spliced ​​segment of one core segment is connected to the second spliced ​​segment of another core segment to form a main body.

3. The core according to claim 2, characterized in that: The free end of the first splicing section is formed with a first step-shaped mating surface, and the free end of the second splicing section is formed with a second step-shaped mating surface; Among them, the first mating surface of one core segment is connected to the first mating surface of another core segment, and the second mating surface of one core segment is connected to the second mating surface of another core segment.

4. The core according to claim 3, characterized in that The first matching surface is configured with a first positioning structure, and the first positioning structure of one core segment is connected to the first positioning structure of another core segment.

5. The core according to claim 4, characterized in that The first mating surface includes a first surface and a third surface extending along the axial direction of the iron core, and a second surface extending along the radial direction of the iron core, the first surface, the second surface and the third surface are connected in sequence to form the first mating surface in a stepped shape, wherein the first positioning structure is arranged on the first surface and the third surface, or the first positioning structure is arranged on the second surface.

6. The core according to claim 5, characterized in that The first positioning structure includes a first positioning groove and a first positioning portion, both of which extend along the axial direction of the core, wherein one of the first positioning groove and the first positioning portion is arranged on the first surface, and the other is arranged on the third surface, and the first positioning portion of one core segment is connected to the first positioning groove of another core segment.

7. The core according to claim 5, characterized in that The first positioning structure includes a first positioning hole and a first positioning protrusion, and the first positioning hole and the first positioning protrusion are both arranged on the second surface, wherein the first positioning protrusion of one core segment is connected to the first positioning hole of another core segment.

8. The core according to claim 3, characterized in that The second matching surface is configured with a second positioning structure, and the second positioning structure of one core segment is connected to the second positioning structure of another core segment.

9. The core according to claim 8, characterized in that The second mating surface includes a fourth surface and a sixth surface extending along the axial direction of the iron core, and a fifth surface extending along the radial direction of the iron core, and the fourth surface, the fifth surface and the sixth surface are connected in sequence to form a stepped second mating surface, wherein the second positioning structure is arranged on the fourth surface and the sixth surface, or the second positioning structure is arranged on the fifth surface.

10. The core according to claim 9, characterized in that The second positioning structure includes a second positioning groove and a second positioning portion, and the second positioning groove and the second positioning portion both extend along the axial direction of the core, wherein one of the second positioning groove and the second positioning portion is arranged on the fourth surface, and the other is arranged on the sixth surface, and the second positioning portion of one core segment is connected to the second positioning groove of another core segment.

11. The core according to claim 9, characterized in that The second positioning structure includes a second positioning hole and a second positioning protrusion, and the second positioning hole and the second positioning protrusion are both arranged on the fifth surface, wherein the second positioning protrusion of one core segment is connected to the second positioning hole of another core segment.

12. The core according to claim 1, characterized in that Each of the core segments connected along the circumference of the core includes a first splicing segment and a second splicing segment located at two opposite ends thereof; Wherein, the first spliced ​​section of one core segment is connected to the second spliced ​​section of another core segment.

13. The core according to claim 12, characterized in that The free end of the first splicing section is formed with a first step-shaped mating surface, and the free end of the second splicing section is formed with a second step-shaped mating surface; Wherein, the first mating surface of one of the core segments is connected to the second mating surface of another of the core segments.

14. The core according to any one of claims 1 to 13, characterized in that: Each of the core segments connected along the circumference of the core further comprises: A main body segment, a first end of which is connected to the first splicing segment through a yoke, and a second end of which is connected to the second splicing segment through a yoke; Wherein, the main body segment includes at least one main body part.

15. The core according to claim 1, characterized in that Each of the core segments connected along the radial direction of the core comprises: At least two main body sub-segments spaced apart from each other along the circumference of the core; A yoke sub-segment section, wherein one yoke sub-segment section is connected between every two adjacent main body sub-segment sections; Among them, when the at least two core segments are connected in sequence along the radial direction of the core, at least two interconnected main body sub-segment sections located in the same radial direction of the core form a main body, and at least two interconnected yoke sub-segment sections located in the same radial direction of the core form a yoke.

16. The core according to claim 15, characterized in that One of each two adjacent core segments is provided with a third positioning groove, and the other is provided with a third positioning portion connected to the third positioning groove, wherein the third positioning groove and the third positioning portion both extend along the axial direction of the core, and the third positioning groove and the third positioning portion are respectively located on one side of the two adjacent main body sub-segments facing each other.

17. The core according to claim 15, characterized in that The main body sub-segment is constructed with a slot segment extending along the radial direction of the core. When the at least two core segments are connected in sequence along the radial direction of the core, at least two slot segments located in the same radial direction of the core are interconnected to form a limiting groove, and the limiting groove is configured to connect the core cover plate.

18. The core according to any one of claims 1 to 17, characterized in that An adhesive layer is provided at the joint of each two adjacent core segments.

19. A stator, characterized in that: Comprising the core as claimed in any one of claims 1 to 18.

20. A motor, characterized in that: Comprising a stator as claimed in claim 19.

21. A vehicle, characterized in that: Comprising the motor as claimed in claim 20.

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