CN216872939U - Stator and motor that contain cooling structure - Google Patents
Stator and motor that contain cooling structure Download PDFInfo
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- CN216872939U CN216872939U CN202122840264.6U CN202122840264U CN216872939U CN 216872939 U CN216872939 U CN 216872939U CN 202122840264 U CN202122840264 U CN 202122840264U CN 216872939 U CN216872939 U CN 216872939U
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- refrigerant
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- refrigerant flow
- yoke
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Abstract
The utility model discloses a stator with a cooling structure, which comprises an oil ring, wherein the oil ring is arranged at the end part of an iron core of the stator and is provided with a ring part refrigerant runner along the circumferential direction; the iron core is axially provided with a yoke portion refrigerant runner, and the yoke portion refrigerant runner is communicated with the ring portion refrigerant runner; liquid inlet holes and liquid outlet holes are formed in the ring portion refrigerant flow groove, and the opening of each liquid outlet hole faces towards the winding of the stator. The yoke portion refrigerant flow groove is formed in the iron core of the stator, the oil ring is arranged at the end portion of the iron core, the ring portion refrigerant flow groove of the oil ring guides the refrigerant to the yoke portion refrigerant flow groove, namely the yoke portion refrigerant flow groove and the ring portion refrigerant flow groove jointly form a channel for the refrigerant to flow in the iron core, the cooling effect on the iron core is achieved, and meanwhile, the oil ring is further provided with the liquid outlet hole, so that the winding can be cooled.
Description
Technical Field
The utility model relates to the field of motors, in particular to a stator with a cooling structure and a motor.
Background
In the field of automobiles, for a high-power automobile driving motor, in order to remarkably improve the sustainability of the motor, the stator needs to be further cooled again by using reduction gearbox oil on the basis of the original shell cooling. At present, the increased oil cooling method is only used for carrying out injection cooling on the winding, but a direct and effective cooling method with high reliability is still lacked for the iron core part of the stator, and the problem of the increase of the heat productivity of the iron core caused by the power increase cannot be solved. Therefore, a technical problem to be solved in the art is to design a cooling structure for a core.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a stator with a cooling structure, which can realize the cooling of an iron core besides the cooling of a winding.
In order to solve the technical problem, the stator with the cooling structure comprises an oil ring, wherein the oil ring is arranged at the end part of an iron core of the stator and is provided with a ring part refrigerant launder along the circumferential direction;
the iron core is axially provided with a yoke portion refrigerant runner, and the yoke portion refrigerant runner is communicated with the ring portion refrigerant runner;
the oil ring is provided with a liquid inlet hole and a liquid outlet hole which are communicated with the ring portion refrigerant flow groove, and the opening of the liquid outlet hole faces the winding of the stator.
Preferably, the oil ring includes a first oil ring and a second oil ring, which are respectively mounted to both end portions of the core;
the ring portion refrigerant flow grooves comprise a first ring portion refrigerant flow groove and a second ring portion refrigerant flow groove, the first ring portion refrigerant flow groove is formed in the first oil ring, and the second ring portion refrigerant flow groove is formed in the second oil ring;
at least one yoke portion refrigerant runner is communicated with the first annular portion refrigerant runner and the second annular portion refrigerant runner simultaneously.
Preferably, the yoke refrigerant flow slots include at least one forward yoke refrigerant flow slot for the refrigerant to flow from the first ring portion refrigerant flow slot to the second ring portion refrigerant flow slot, and at least one reverse yoke refrigerant flow slot for the refrigerant to flow from the second ring portion refrigerant flow slot to the first ring portion refrigerant flow slot;
a first ring part partition plate is arranged in the first ring part refrigerant flow groove to realize the reversing flow of the refrigerant between the forward yoke part refrigerant flow groove and the reverse yoke part refrigerant flow groove;
and a second annular partition plate is arranged in the second annular refrigerant flow groove to realize the reversing flow of the refrigerant between the forward yoke refrigerant flow groove and the reverse yoke refrigerant flow groove.
Preferably, the number of the liquid inlet holes is one, and the liquid inlet holes are formed in the outer side wall of the first oil ring, and the refrigerant flows from the liquid inlet holes to the first annular refrigerant runner.
Preferably, the number of the liquid inlet holes is one, and the liquid inlet holes are formed in the outer side wall of the second oil ring, and the refrigerant flows from the liquid inlet holes to the second annular refrigerant flow groove.
Preferably, the number of the liquid outlet holes is plural, the liquid outlet holes are dispersedly formed in the inner side wall of the first oil ring and/or the inner side wall of the second oil ring, and the refrigerant is ejected from the liquid outlet holes to the winding.
Preferably, the refrigerant is gearbox oil.
Preferably, the circumferential cross section of the yoke coolant runner is one of a square, a rectangle, a circle, a semicircle, a polygon, a fan ring or an irregular shape.
Preferably, the yoke coolant flow groove is opened in a yoke of the core.
In order to solve the technical problem, the utility model further provides a motor which comprises the stator with the cooling structure.
The yoke portion refrigerant flow groove is formed in the iron core of the stator, the oil ring is arranged at the end portion of the iron core, the ring portion refrigerant flow groove of the oil ring guides the refrigerant to the yoke portion refrigerant flow groove, namely the yoke portion refrigerant flow groove and the ring portion refrigerant flow groove jointly form a channel for the refrigerant to flow in the iron core, the cooling effect on the iron core is achieved, and meanwhile, the oil ring is further provided with the liquid outlet hole, so that the winding can be cooled.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the present invention are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of one embodiment of a stator of the present invention;
FIG. 2 is a schematic view of a core of an embodiment of the stator of the present invention;
FIG. 3 is a schematic view of a first oil ring of an embodiment of the stator of the present invention;
FIG. 4 is a schematic view of a second oil ring of an embodiment of the stator of the present invention;
fig. 5 is a schematic view of a ring portion refrigerant flow groove and a yoke portion refrigerant flow groove (i.e., a refrigerant flow diagram) of an embodiment of a stator of the present invention.
In the figure, 10-oil ring; 11-ring part refrigerant chute; 12-liquid inlet hole; 13-liquid outlet holes; 14-a first annulus diaphragm; 15-a second annular partition; 20-a core; 21-yoke coolant launder; 101-a first oil ring; 102 a second oil ring; 111-first ring section coolant runner; 112-second annular portion refrigerant launder; 211-forward yoke coolant launder; 212-reverse yoke coolant flow slot.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, 2, 3 and 4, a stator including a cooling structure according to the present invention is shown, and is characterized by including an oil ring mounted at an end of an iron core of the stator, the oil ring being circumferentially provided with a ring-shaped coolant flow groove;
the iron core is axially provided with a yoke portion refrigerant runner, and the yoke portion refrigerant runner is communicated with the ring portion refrigerant runner;
the oil ring is provided with a liquid inlet hole and a liquid outlet hole which are communicated with the ring portion refrigerant flow groove, and the opening of the liquid outlet hole faces the winding of the stator.
In the embodiment of the utility model, the yoke refrigerant runner is arranged on the iron core of the stator, and the refrigerant is guided to the yoke refrigerant runner through the ring part refrigerant runner of the oil ring, namely the yoke refrigerant runner and the ring part refrigerant runner jointly form a channel for the flow of the refrigerant in the iron core, so that the iron core is cooled. The utility model has the following cooling method for the iron core: the coolant enters a coolant runner on the ring part of the oil ring through a liquid inlet hole, part of the coolant flows to the coolant runner on the yoke part to realize the cooling effect on the iron core, part of the coolant is sprayed to the winding through a liquid outlet hole to realize the cooling of the winding, and the coolant is finally sprayed out through the liquid outlet hole; understandably, the aperture of the liquid outlet hole is smaller than that of the liquid inlet hole, and the larger the aperture difference between the liquid outlet hole and the liquid inlet hole is, the more favorable the refrigerant flows to the refrigerant flow groove of the yoke part, thereby increasing the cooling effect on the iron core.
In a specific embodiment, referring to fig. 3 and 4, the oil ring includes a first oil ring and a second oil ring mounted to both end portions of the core, respectively; the ring portion refrigerant flow grooves comprise a first ring portion refrigerant flow groove and a second ring portion refrigerant flow groove, the first ring portion refrigerant flow groove is formed in the first oil ring, and the second ring portion refrigerant flow groove is formed in the second oil ring; at least one yoke portion refrigerant runner is communicated with the first annular portion refrigerant runner and the second annular portion refrigerant runner simultaneously.
In this specific embodiment, the first oil ring and the second oil ring may be provided with a liquid inlet hole, but as a preferred embodiment, one liquid inlet hole may be provided in the first oil ring or the second oil ring, and a plurality of liquid outlet holes are provided and dispersed in the first oil ring and/or the second oil ring; when the liquid inlet hole is arranged on the first oil ring, the liquid outlet hole is dispersedly arranged on the first oil ring and the second oil ring, and the flowing paths of the refrigerant are as follows: the refrigerant enters the first ring part refrigerant flow groove from the liquid inlet hole, and part of the refrigerant is sprayed out from the liquid outlet hole to cool the winding; because the yoke portion refrigerant runner that communicates first ring portion refrigerant runner and second ring portion refrigerant runner simultaneously exists, some refrigerants flow through this yoke portion refrigerant runner to second ring portion refrigerant runner from first ring portion refrigerant runner, and the cooling to the iron core is accomplished to the in-process that flows, and the play liquid hole blowout to the winding is in order to cool off the winding from first oil ring and/or second oil ring at last. The first oil ring and the second oil ring may be integrated with the front end cover and the rear end cover of the stator, and when the front end cover and the rear end cover are mounted to both ends of the stator, the first oil ring and the second oil ring are respectively assembled to both ends of the core, and the ring portion refrigerant flow groove and the yoke portion refrigerant flow groove are communicated with each other.
In a specific embodiment, the yoke portion refrigerant flow slots include at least one forward yoke portion refrigerant flow slot for the refrigerant to flow from the first ring portion refrigerant flow slot to the second ring portion refrigerant flow slot, and at least one reverse yoke portion refrigerant flow slot for the refrigerant to flow from the second ring portion refrigerant flow slot to the first ring portion refrigerant flow slot; a first ring part partition plate is arranged in the first ring part refrigerant flow groove to realize the reversing flow of the refrigerant between the forward yoke part refrigerant flow groove and the reverse yoke part refrigerant flow groove; and a second annular partition plate is arranged in the second annular refrigerant flow groove to realize the reversing flow of the refrigerant between the forward yoke refrigerant flow groove and the reverse yoke refrigerant flow groove.
In this embodiment, through set up first ring portion baffle and second ring portion baffle respectively in first ring portion refrigerant chute and second ring portion refrigerant chute, simultaneously correspondingly, set up forward yoke portion refrigerant chute and reverse yoke portion refrigerant chute and realize the refrigerant mutual flow before first ring portion refrigerant chute and second ring portion refrigerant chute, refer to fig. 5, show a schematic diagram of this embodiment: the liquid inlet hole is arranged on the first oil ring, the liquid outlet hole is arranged on the first oil ring and the second oil ring, the yoke refrigerant chutes are communicated with the first ring refrigerant chute and the second ring refrigerant chute simultaneously, the first ring partition plate divides the first ring refrigerant chute into A, B, C, D parts and E parts, the fifth ring partition plate divides the second ring refrigerant chute into A ', B ', C ', D ' parts and E ', the yoke refrigerant chute communicated with the A part is respectively communicated with A ' and E ', the yoke refrigerant chute communicated with the B part is respectively communicated with A ' and B ', the yoke refrigerant chute communicated with the C part is respectively communicated with B ' and C ', the yoke refrigerant chute communicated with the D part is respectively communicated with C ' and D ', the yoke refrigerant chute communicated with the E part is respectively communicated with D ' and E ', the liquid inlet hole is arranged on the A part, realized that part refrigerant comes and goes to flow between first ring portion refrigerant launder and second ring portion refrigerant launder, the concrete flow process of refrigerant is: the coolant enters from a liquid inlet hole positioned at the part A, flows to the part A 'and the part E' through a forward yoke coolant flow groove communicated with the part A, flows to the part B and the part E through a reverse yoke coolant flow groove communicated with the part A 'and the part E' respectively, flows to the part B 'and the part D' through the forward yoke coolant flow groove communicated with the part B and the part E respectively, flows to the part D and the part C through the reverse yoke coolant flow groove communicated with the part D 'and the part E' respectively, and finally converges to the part C through the forward yoke coolant flow groove communicated with the part D and the part C respectively, so that the core is cooled in the flowing process; meanwhile, in the flowing process of the refrigerant, part of the refrigerant is sprayed to the winding from liquid outlet holes distributed in the first oil ring and the second oil ring, and the winding is cooled. It should be noted that the above-mentioned arrangement is only one form of the present embodiment, and it is within the scope of the present invention to realize the arrangement of the refrigerant flowing back and forth between the first circular portion refrigerant runner and the second circular portion refrigerant runner.
In a specific embodiment, the refrigerant is reduction gearbox oil.
In a specific embodiment, the circumferential cross section of the yoke coolant flow channel is one of square, rectangle, circle, semicircle, polygon, fan-shaped or irregular shape.
In a specific embodiment, the yoke cooling medium flow groove opens at a yoke of the core.
The utility model further provides a motor which comprises the stator in the embodiment, so that all the beneficial effects brought by the technical scheme in the embodiment are achieved.
In summary, the yoke coolant runner is formed in the iron core of the stator, and the oil ring is arranged at the end of the iron core, so that the coolant is guided to the yoke coolant runner by the ring coolant runner of the oil ring, the iron core is cooled, and meanwhile, the winding can be cooled due to the liquid outlet holes formed in the oil ring.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A stator with a cooling structure is characterized by comprising an oil ring, wherein the oil ring is arranged at the end part of an iron core of the stator and is provided with a ring part refrigerant flow groove along the circumferential direction;
the iron core is axially provided with a yoke portion refrigerant flow groove, and the yoke portion refrigerant flow groove is communicated with the ring portion refrigerant flow groove;
the oil ring is provided with a liquid inlet hole and a liquid outlet hole which are communicated with the ring portion refrigerant flow groove, and the opening of the liquid outlet hole faces the winding of the stator.
2. The stator according to claim 1, wherein the oil rings include a first oil ring and a second oil ring which are respectively installed at both end portions of the core;
the ring portion refrigerant flow grooves comprise a first ring portion refrigerant flow groove and a second ring portion refrigerant flow groove, the first ring portion refrigerant flow groove is formed in the first oil ring, and the second ring portion refrigerant flow groove is formed in the second oil ring;
at least one yoke portion refrigerant runner is communicated with the first annular portion refrigerant runner and the second annular portion refrigerant runner simultaneously.
3. The stator of claim 2, wherein the yoke refrigerant flow slots comprise at least one forward yoke refrigerant flow slot for flow of refrigerant from the first ring portion refrigerant flow slot to the second ring portion refrigerant flow slot, at least one reverse yoke refrigerant flow slot for flow of refrigerant from the second ring portion refrigerant flow slot to the first ring portion refrigerant flow slot;
a first ring part partition plate is arranged in the first ring part refrigerant flow groove to realize the reversing flow of the refrigerant between the forward yoke part refrigerant flow groove and the reverse yoke part refrigerant flow groove;
be provided with second annular partition plate in the second annular refrigerant chute in order to realize the refrigerant forward yoke portion refrigerant chute with reverse flow between the reverse yoke portion refrigerant chute.
4. The stator as claimed in claim 3, wherein the number of the liquid inlet holes is one, and the liquid inlet holes are opened on an outer side wall of the first oil ring, and the refrigerant flows from the liquid inlet holes to the first annular portion refrigerant flow groove.
5. The stator according to claim 3, wherein the number of the liquid inlet holes is one, and the liquid inlet holes are opened in an outer side wall of the second oil ring, and the refrigerant flows from the liquid inlet holes to the second annular refrigerant groove.
6. The stator according to claim 3, wherein the number of the liquid outlet holes is plural, the plural liquid outlet holes are provided in a dispersed manner on an inner sidewall of the first oil ring and/or an inner sidewall of the second oil ring, and the refrigerant is ejected from the liquid outlet holes to the winding.
7. The stator as claimed in claim 3 wherein the coolant is gearbox oil.
8. The stator of claim 1, wherein the yoke coolant flow slot has a circumferential cross-section that is one of square, rectangular, circular, semicircular, polygonal, scalloped, or irregular.
9. The stator of claim 1, wherein the yoke coolant flow slot opens at a yoke portion of the core.
10. An electrical machine comprising a stator as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122840264.6U CN216872939U (en) | 2021-11-19 | 2021-11-19 | Stator and motor that contain cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122840264.6U CN216872939U (en) | 2021-11-19 | 2021-11-19 | Stator and motor that contain cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216872939U true CN216872939U (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122840264.6U Active CN216872939U (en) | 2021-11-19 | 2021-11-19 | Stator and motor that contain cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216872939U (en) |
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2021
- 2021-11-19 CN CN202122840264.6U patent/CN216872939U/en active Active
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