CN220210038U - Stator punching sheet, stator assembly, motor and vehicle - Google Patents
Stator punching sheet, stator assembly, motor and vehicle Download PDFInfo
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- CN220210038U CN220210038U CN202321572089.XU CN202321572089U CN220210038U CN 220210038 U CN220210038 U CN 220210038U CN 202321572089 U CN202321572089 U CN 202321572089U CN 220210038 U CN220210038 U CN 220210038U
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- stator
- annular body
- flow
- stator core
- cooling
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- 238000004080 punching Methods 0.000 title claims abstract description 33
- 238000001816 cooling Methods 0.000 claims description 60
- 238000003475 lamination Methods 0.000 claims description 53
- 239000007788 liquid Substances 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002826 coolant Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The embodiment of the application provides a stator punching, stator module, motor and vehicle, wherein the stator punching includes annular body, and at least one water conservancy diversion breach has been seted up to annular body's outside edge, and the water conservancy diversion breach extends to the arc along annular body's circumference. According to the technology of the application, the heat dissipation performance of the motor is improved, and the manufacturing cost of the motor is reduced.
Description
Technical Field
The application relates to the technical field of motors, in particular to a stator punching sheet, a stator assembly, a motor and a vehicle.
Background
The driving motor is an important part of the electric automobile, and when the driving motor works, a large amount of heat is generated due to the loss between the rotor and the stator, so that the rotor magnetic steel is easy to demagnetize, the stator coil is easy to burn out, and the normal operation of the motor is influenced.
Disclosure of Invention
Embodiments of the present application provide a stator punching, a stator assembly, a motor, and a vehicle to solve or alleviate one or more technical problems in the prior art.
As an aspect of the embodiments of the present application, the embodiments of the present application provide a stator punching sheet, where the stator punching sheet includes an annular body, and at least one flow guiding notch is formed at an outer edge of the annular body, and the flow guiding notch extends into an arc shape along a circumferential direction of the annular body.
In one embodiment, the size of the flow-guiding gap in the radial direction of the annular body is 2 to 4mm.
In one embodiment, a plurality of flow guiding gaps are formed in the outer side edge of the annular body, and the plurality of flow guiding gaps are distributed at equal intervals in the circumferential direction of the annular body.
As another aspect of the embodiments of the present application, the embodiments of the present application further provide a stator assembly, including: the stator core comprises a plurality of stator punching sheets which are laminated; the flow guide notches of the stator punching sheets jointly define a cooling flow passage extending spirally around the central axis of the stator core.
In one embodiment, the plurality of stator laminations are identical in shape.
In one embodiment, the inner peripheral wall of the annular body is provided with a plurality of convex teeth, and the convex teeth are distributed at equal intervals in the circumferential direction of the annular body; the preset rotation angle alpha and the number z of the plurality of convex teeth meet the following relation: α=360×n/z, where n is a positive integer.
In one embodiment, the width dimension H1 of the cooling flow passage and the pitch H2 of the cooling flow passage satisfy the following relationship: h1/h2=β/(360/N- β), where β is the central angle corresponding to the flow guiding notch, and N is the number of flow guiding notches of each stator lamination.
In one embodiment, the ratio of the width dimension H1 to the pitch H2 is greater than or equal to 0.5 and less than or equal to 2.
In one embodiment, the annular body is provided with a plurality of through flow guiding gaps, and the plurality of flow guiding gaps are distributed at equal intervals in the circumferential direction of the annular body; the cooling flow channels are a plurality of corresponding to the plurality of flow guide gaps on the annular body, and the plurality of cooling flow channels are mutually isolated.
In one embodiment, the stator assembly further comprises: the stator shell defines a cavity for accommodating a stator core, and the stator core is provided with a liquid inlet channel and a liquid outlet channel; the input end and the output end of the cooling flow channel are respectively formed at two ends of the stator core body in the axial direction, the input end is communicated with the liquid inlet flow channel, and the output end is communicated with the liquid outlet flow channel.
As another aspect of the embodiments of the present application, the embodiments of the present application further provide an electric machine, including: a motor housing; the rotor assembly is arranged in the motor casing; the stator assembly of any of the above embodiments of the present application is disposed inside a motor casing.
As another aspect of the embodiments of the present application, the embodiments of the present application further provide a vehicle including the motor of the above embodiments of the present application.
According to the technology of the embodiment of the application, through seting up curved water conservancy diversion breach on stator punching, and the water conservancy diversion breach of a plurality of stator punching prescribes a limit to the cooling flow path who encircles the central axis spiral extension of stator core jointly, from this, prolonged the flow path of coolant in the stator core to promoted the distribution homogeneity of cooling flow path in the circumference and the axial of stator core, thereby promoted the cooling efficiency to stator module, promoted the heat dispersion of motor, and then promoted the job stabilization nature of motor. Secondly, compare in the stator core among the correlation technique need process the stator punching of multiple shape in order to form the runner that supplies the cooling medium to flow jointly, the stator module of this application embodiment can be through the stator punching gyration preset angle with the single shape to make the water conservancy diversion breach of a plurality of stator punching communicate in proper order and form the cooling runner that the spiral extends, from this, only need a pair stamping die to the processing of stator punching, thereby reduced the processing degree of difficulty of stator punching, simplified processing technology, and then reduced stator module and motor's manufacturing cost.
The foregoing summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will become apparent by reference to the drawings and the following detailed description.
Drawings
In the drawings, the same reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily drawn to scale. It is appreciated that these drawings depict only some embodiments according to the disclosure and are not therefore to be considered limiting of its scope.
FIG. 1 illustrates a schematic structural view of a stator lamination of a stator assembly according to an embodiment of the present application;
FIG. 2 illustrates a schematic structural view of a stator assembly according to an embodiment of the present application;
FIG. 3 illustrates a cross-sectional view of a stator assembly according to an embodiment of the present application;
FIG. 4 illustrates a schematic structural view of a stator lamination of a stator assembly according to an embodiment of the present application;
fig. 5 illustrates another structural schematic of a stator lamination of a stator assembly in accordance with an embodiment of the present application.
Reference numerals illustrate:
a stator assembly 100;
a stator core 1; a cooling flow passage 101; an input terminal 101a; an output terminal 101b;
stator laminations 10; a diversion gap 11; an arcuate edge 111; a linear edge 113; the teeth 12.
Detailed Description
Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.
A stator lamination 10 and a stator assembly 100 according to an embodiment of the present application are described below with reference to fig. 1-5.
Fig. 1 shows a schematic structural view of a stator lamination 10 according to an embodiment of the present application. As shown in fig. 1, the stator punching sheet 10 includes an annular body, at least one through flow guiding notch 11 is formed in the annular body, and the flow guiding notch 11 extends into an arc shape along the circumferential direction of the annular body.
In the embodiment of the present application, the stator lamination 10 may be formed by a stamping process, and a plurality of stator laminations 10 are coaxially disposed and stacked on each other to form the stator core 1 of the stator assembly 100.
Illustratively, the stator laminations 10 include a generally annular body defining a through bore in a central region thereof, the through bores of the plurality of stator laminations 10 collectively defining a cavity for receiving the rotor of the electric machine. The annular body comprises teeth and a yoke part which are distributed along the radial direction of the annular body, wherein the teeth are positioned on the inner periphery of the annular body, and the yoke part is positioned on the outer periphery of the annular body. The diversion notch 11 is formed at the outer edge of the yoke part of the stator punching sheet 10.
The flow guiding gap 11 is provided to penetrate the annular body in the axial direction of the annular body. The cross-sectional shape of the flow guiding gap 11 may include an arc-shaped edge 111 extending in the circumferential direction of the annular body and two straight edges 113 extending in the radial direction of the annular body, and the two straight edges 113 are disposed opposite to each other in the circumferential direction of the annular body. The cross-sectional shape of the flow-guiding recess 11 is thus substantially sector-shaped.
It should be noted that, in the embodiment of the present application, the plurality of stator laminations 10 are stacked on each other to form the stator core 1, and by rotating the adjacent stator laminations 10 by a preset angle, the plurality of stator laminations 10 can form the cooling flow channel 101 extending spirally around the central axis of the stator core 1 on the outer side surface of the stator core 1, so that the cooling medium flows on the outer side surface of the stator core 1, thereby achieving the purpose of heat dissipation of the stator assembly 10.
In one embodiment, the flow-guiding gap 11 has a dimension in the radial direction of the annular body of 2 to 4mm. The radial dimension of the flow gap 1 in the annular body is understood to be the depth dimension of the flow gap.
It can be understood that if the size of the flow guiding gap 11 in the radial direction of the annular body is smaller than 2mm, the flow guiding area of the flow guiding gap 11 will be affected to a certain extent, so that the flow efficiency of the cooling medium along the cooling flow channel of the stator core 1 is reduced, and the heat dissipation performance is affected. If the size of the flow guiding gap 11 in the radial direction of the annular body is greater than 4mm, the structural strength and structural stability of the stator core 1 may be affected to some extent, although the flow guiding area of the flow guiding gap 11 is increased and the flow efficiency of the cooling medium is improved.
Therefore, in order to achieve both the flow guiding area of the flow guiding gap 11 and the structural strength and structural stability of the stator core 1, the size of the flow guiding gap 11 in the radial direction of the annular body is suitably set to 2 to 4mm. Preferably, the size of the flow guiding gap 11 in the radial direction of the annular body may be set to 3mm.
In one embodiment, a plurality of flow guiding notches 11 are formed on the outer edge of the annular body, and the plurality of flow guiding notches 11 are distributed at equal intervals in the circumferential direction of the annular body.
Thus, by forming the plurality of flow guide notches 11 in the annular body, a plurality of cooling flow passages 101 corresponding to each other can be formed in the stator core 1 formed by the plurality of stator laminations 10 stacked on each other, and the plurality of cooling flow passages 101 are distributed at equal intervals in the circumferential direction of the stator core 1.
Fig. 2 shows a schematic structural view of a stator assembly 100 according to an embodiment of the present application. As shown in fig. 2, the stator assembly 100 includes a stator core 1. Specifically, the stator core 1 includes the stator laminations 10 of the above-described embodiment of the present application, and the stator laminations 10 are plural and stacked. Wherein the flow guiding indentations 11 of the plurality of stator laminations 10 together define a cooling flow channel 101 extending helically around the central axis of the stator core 1.
In the embodiment of the present application, a plurality of stator laminations 10 are coaxially disposed and stacked on one another to form the stator core 1. The number of stator laminations 10 included in the stator core 1 is not particularly limited, and those skilled in the art may set the number according to the thickness dimension of the stator laminations 10 and the axial dimension of the stator core 1.
In this embodiment, the stator core 1 includes a plurality of stator laminations 10 having the same shape, and a preset rotation angle is provided between two adjacent stator laminations 10, that is, two adjacent stator laminations 10 are staggered in the circumferential direction by a preset angle, and portions of the flow guiding notches 11 of two adjacent stator laminations 10 are communicated, so that the flow guiding notches 11 of the plurality of stator laminations 10 together define a cooling flow channel 101 extending helically around the central axis of the stator core 1. Wherein, the depth dimension H of the cooling flow channel 101 in the radial direction of the stator core 1 3 Namely the radial dimension of the diversion gap 11 on the annular body, namely the depth dimension H of the cooling flow passage 3 May be 2 to 4mm.
It is understood that the cooling flow passage 101 is used for flowing a cooling medium to cool the stator core 1. The cooling medium may be cooling oil or cooling water or other heat exchange medium. Each stator lamination 10 may be provided with one or more flow-guiding notches 11. In the case that each stator lamination 10 is provided with a flow guiding notch 11, the flow guiding notches 11 on the plurality of stator laminations 10 together define a cooling flow channel 101. In the case that each stator lamination 10 is provided with a plurality of flow guiding notches 11, the flow guiding notches 11 on the plurality of stator laminations 10 together define cooling flow channels 101 having the same number as the flow guiding notches 11 of the single stator lamination 10.
According to the stator assembly 100 of the embodiment of the application, the arc-shaped flow guide notch 11 is formed in the stator punching sheet 10, and the flow guide notches 11 of the plurality of stator punching sheets 10 jointly define the cooling flow channel 101 extending spirally around the central axis of the stator core 1, so that the flow path of cooling medium in the stator core 1 is prolonged, the distribution uniformity of the cooling flow channel 101 in the circumferential direction and the axial direction of the stator core 1 is improved, the cooling efficiency of the stator assembly 100 is improved, the heat dissipation performance of a motor is improved, and the working stability and the reliability of the motor are further improved. Secondly, compared to the stator core 1 in the related art, which needs to process the stator laminations 10 with various shapes to jointly form the flow channel for the cooling medium to flow, the stator assembly 100 in the embodiment of the present application can enable the diversion gaps 11 of the plurality of stator laminations 10 to be sequentially communicated and form the cooling flow channel 101 extending spirally through rotating the stator laminations 10 with a single shape by a preset angle, therefore, only one pair of stamping dies is needed for processing the stator laminations 10, thereby reducing the processing difficulty of the stator laminations 10, simplifying the processing technology, and further reducing the manufacturing cost of the stator assembly 100 and the motor.
In one embodiment, the inner peripheral wall of the annular body is provided with a plurality of teeth 12, and the plurality of teeth 12 are equally spaced apart in the circumferential direction of the annular body.
It will be appreciated that the teeth 12 of the plurality of stator laminations 10 are disposed directly opposite in the axial direction of the stator core 1 to form a plurality of stator teeth of the stator core 1 equally spaced circumferentially thereof. Wherein a plurality of stator teeth are used to wind the windings of the setting subassembly 100.
The shape, number and size of the teeth 12 on the stator lamination 10 are not particularly limited in the embodiment of the present application, and may be specifically set by those skilled in the art according to practical situations.
Optionally, a preset rotation angle is provided between two adjacent stator laminations 10, and the preset rotation angle α and the number z of the plurality of teeth 12 satisfy the following relationship: α=360×n/z, where n is a positive integer.
In the embodiment of the present application, in order to ensure that the plurality of teeth 12 of any adjacent two stator laminations 10 are disposed opposite to each other in the axial direction of the stator core 1, the preset rotation angle α may be correspondingly set according to the number z of the teeth 12. For example, in the case where the number z of the teeth 12 is 48, the value of n may be 1, and the preset rotation angle α may be 7.5 degrees; or, the value of n can be 2, and the preset rotation angle alpha can be 15 degrees; or, the value of n may be 3, and the preset rotation angle may be specifically 22.5 degrees.
In one embodiment, the width dimension H of the cooling flow channel 101 1 And the pitch H of the cooling flow path 101 2 The following relationship is satisfied: h 1 /H 2 beta/(360/N-beta), where beta is the central angle corresponding to the diversion gap 11, and N is each stator lamination10 of the number of flow-guiding indentations 11.
In the embodiment of the present application, the width dimension H of the cooling flow passage 101 1 Refers to the dimension of the cooling flow passage 101 in the axial direction of the stator core 1; pitch H of cooling flow path 101 2 Refers to the spacing between two adjacent spiral flow sections of the cooling flow channel 101, wherein the spiral flow sections are part of the cooling flow channel 101 which extends around the center of the stator core 1 in a circle (i.e. 360 degrees).
It will be appreciated that the width dimension H of the cooling flow path 101 1 Depending on the thickness dimension D of the stator lamination 10, the central angle β corresponding to the flow guiding gap 11, and the preset rotation angle α, the following relationship is satisfied: h 1 =d (β/α). Pitch H of cooling flow path 101 2 Also depends on the thickness dimension D of the stator lamination 10, the central angle β corresponding to the flow guiding gap 11, and the preset rotation angle α, and satisfies the following relationship: h 2 D ((360/N- β)/α), where N is the number of flow guiding notches 11 formed in a single stator lamination 10. Thereby, the width dimension H of the cooling flow passage 101 1 And the pitch H of the cooling flow path 101 2 The ratio between them satisfies the relationship: h 1 /H 2 ＝β/(360/N-β)。
Optionally, the ratio of the width dimension H1 to the pitch H2 is greater than or equal to 0.5 and less than or equal to 2. In other words, the ratio between the central angle β corresponding to the flow guiding notch 11 and the central angle (360/N- β) corresponding to the portion of the annular body located between the adjacent two flow guiding notches 11 is greater than or equal to 0.5 and less than or equal to 2.
It will be appreciated that, in the case where the ratio of the width dimension H1 to the pitch H2 is less than 0.5, the ratio of the cross-sectional area of the flow guiding gap 11 to the cross-sectional area of the annular body is too small, resulting in a correspondingly small flow area of the cooling flow channel 101, thereby affecting the heat dissipation performance of the stator assembly 100. Under the condition that the ratio of the width dimension H1 to the pitch H2 is greater than the ratio, the ratio of the cross-sectional area of the flow guiding notch 11 to the cross-sectional area of the annular body is too large, which affects the structural strength of the stator core 1 to a certain extent and affects the torque transmission performance of the stator core 1, thereby affecting the working performance of the stator assembly 100.
Therefore, in order to achieve both heat dissipation performance and operation performance of the stator assembly 100, the ratio of the width dimension H1 to the pitch H2 is suitably set between 0.5 and 2. Preferably, the ratio of the width dimension H1 to the pitch H2 may be 1.
In one embodiment, the annular body is provided with a plurality of through diversion gaps 11, and the diversion gaps 11 are distributed at equal intervals in the circumferential direction of the annular body; the cooling flow channels 101 are a plurality of corresponding to the plurality of diversion gaps 11 on the annular body, and the plurality of cooling flow channels 101 are mutually isolated.
In a specific example, as shown in fig. 4, a flow guiding notch 11 is formed on the annular body of each stator punching sheet 10, and a central angle β corresponding to the flow guiding notch 11 is 150 degrees. The number of the convex teeth 12 arranged on each stator punching sheet 10 is 48, and the preset rotation angle between two adjacent stator punching sheets 10 is 7.5 degrees. The stator laminations 10 are stacked to define a helically extending cooling channel 101 on the outer side surface of the stator core 1, and the width dimension H of the cooling channel 101 1 And the pitch H of the cooling flow path 101 2 The ratio between them is 5/7. Wherein the cooling flow passage 101 extends spirally in the axial direction of the stator core 1 for at least one revolution, i.e., the rotation angle of the cooling flow passage 101 in the circumferential direction is greater than 360 degrees.
In another specific example, as shown in fig. 5, four flow guiding notches 11 are formed in the annular body of each stator punching sheet 10, and the four flow guiding notches 11 are distributed at equal intervals in the circumferential direction of the annular body, and a central angle β corresponding to each flow guiding notch 11 is 45 degrees. The number of the convex teeth 12 arranged on each stator punching sheet 10 is 48, and the preset rotation angle between two adjacent stator punching sheets 10 is 15 degrees. The plurality of stator laminations 10 are stacked to collectively define four mutually isolated cooling channels 101 on the outer side surface of the stator core 1, and the width dimension H of each cooling channel 101 1 And the pitch H of the cooling flow path 101 2 The ratio between them is 1. Wherein the cooling flow passage 101 spirally extends in the axial direction of the stator core 1 for less than one revolution, i.e., the rotation angle of the cooling flow passage 101 in the circumferential direction is less than 360 degrees.
In one embodiment, the stator assembly 100 further includes a stator housing defining a cavity for accommodating the stator core 1, and the stator core 1 is provided with a liquid inlet channel and a liquid outlet channel. Wherein, the input end 101a and the output end 101b of the cooling flow channel 101 are respectively formed at two ends of the stator core 1 in the axial direction, the input end 101a is communicated with the liquid inlet flow channel, and the output end 101b is communicated with the liquid outlet flow channel.
Illustratively, the stator casing is provided with a liquid inlet channel and a liquid outlet channel, the liquid inlet channel is used for allowing the cooling medium to flow in, and the liquid outlet channel is used for allowing the cooling medium to flow out. It will be appreciated that the input end 101a of the cooling flow path 101 is formed by the flow guiding notch 11 on the stator lamination 10 located at one end in the axial direction of the stator core 1, and the output end 101b of the cooling flow path 101 is formed by the flow guiding notch 11 on the stator lamination 10 located at the other end in the axial direction of the stator core 1.
As an aspect of the embodiments of the present application, the embodiments of the present application also provide an electric motor, in which the electric motor may be a main drive motor for a vehicle. The motor of this application embodiment includes: motor housing rotor assembly and stator assembly 100 of any of the embodiments described above herein. Wherein the rotor assembly and the stator assembly 100 are both disposed inside the motor casing.
According to the motor of the embodiment of the application, by utilizing the stator assembly 100 of the embodiment of the application, the heat dissipation performance of the motor is improved, the working stability and reliability of the motor are improved, and the manufacturing cost of the motor is reduced.
As an aspect of the embodiments of the present application, the embodiments of the present application further provide a vehicle including the motor of the above embodiments of the present application.
The motor of the above embodiment and other components of the vehicle may be applied to various technical solutions that are known to those skilled in the art now and in the future, and will not be described in detail herein.
In the description of the present specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The above disclosure provides many different embodiments or examples for implementing different structures of the present application. The components and arrangements of specific examples are described above in order to simplify the disclosure of this application. Of course, they are merely examples and are not intended to limit the present application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not in themselves indicate the relationship between the various embodiments and/or arrangements discussed.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of various changes or substitutions within the technical scope of the present application, and these should be covered in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (12)
1. The stator punching sheet is characterized by comprising an annular body, wherein at least one flow guide notch is formed in the outer side edge of the annular body, and the flow guide notch extends into an arc shape along the circumferential direction of the annular body.
2. The stator lamination of claim 1, wherein the flow-directing gap has a dimension in a radial direction of the annular body of 2 to 4mm.
3. The stator punching sheet according to claim 1, wherein a plurality of the flow guiding notches are formed in an outer side edge of the annular body, and the plurality of the flow guiding notches are distributed at equal intervals in a circumferential direction of the annular body.
4. A stator assembly, comprising:
a stator core comprising a plurality of stator laminations as set forth in any one of claims 1 to 3, the stator laminations being stacked;
the plurality of flow guide notches of the stator punching sheet jointly define a cooling flow passage extending spirally around the central axis of the stator core body.
5. The stator assembly of claim 4 wherein a plurality of the stator laminations are identical in shape.
6. The stator assembly according to claim 4, wherein an inner peripheral wall of the annular body is provided with a plurality of teeth, and the plurality of teeth are equally spaced apart in a circumferential direction of the annular body; the stator punching sheets are provided with a preset rotation angle between two adjacent stator punching sheets, and the preset rotation angle alpha and the number z of the plurality of convex teeth meet the following relationship:
α＝360*n/z，
wherein n is a positive integer.
7. The stator assembly of claim 4, wherein the width dimension H1 of the cooling flow passage and the pitch H2 of the cooling flow passage satisfy the following relationship:
H1/H2＝β/(360/N-β)，
wherein beta is the central angle corresponding to the flow guiding notch, and N is the number of the flow guiding notches of each stator punching sheet.
8. The stator assembly according to claim 7, wherein a ratio of the width dimension H1 and the pitch H2 is greater than or equal to 0.5 and less than or equal to 2.
9. The stator assembly of claim 4, wherein a plurality of flow guide notches are formed in an outer edge of the annular body, the cooling flow channels are a plurality of flow guide notches corresponding to the plurality of flow guide notches on the annular body, and the plurality of cooling flow channels are isolated from each other.
10. The stator assembly according to any one of claims 4 to 9, further comprising:
the stator casing is used for limiting a cavity for accommodating the stator core, and the stator core is provided with a liquid inlet channel and a liquid outlet channel; the input end and the output end of the cooling flow channel are respectively formed at two ends of the stator core body in the axial direction, the input end is communicated with the liquid inlet flow channel, and the output end is communicated with the liquid outlet flow channel.
11. An electric machine, comprising:
a motor housing;
the rotor assembly is arranged in the motor casing;
a stator assembly as claimed in any one of claims 4 to 10 disposed inside the motor casing.
12. A vehicle comprising the electric machine of claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321572089.XU CN220210038U (en) | 2023-06-19 | 2023-06-19 | Stator punching sheet, stator assembly, motor and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321572089.XU CN220210038U (en) | 2023-06-19 | 2023-06-19 | Stator punching sheet, stator assembly, motor and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220210038U true CN220210038U (en) | 2023-12-19 |
Family
ID=89153760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321572089.XU Active CN220210038U (en) | 2023-06-19 | 2023-06-19 | Stator punching sheet, stator assembly, motor and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220210038U (en) |
-
2023
- 2023-06-19 CN CN202321572089.XU patent/CN220210038U/en active Active
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