CN207603316U - Motor and its copper rotor structure - Google Patents
Motor and its copper rotor structure Download PDFInfo
- Publication number
- CN207603316U CN207603316U CN201721548595.XU CN201721548595U CN207603316U CN 207603316 U CN207603316 U CN 207603316U CN 201721548595 U CN201721548595 U CN 201721548595U CN 207603316 U CN207603316 U CN 207603316U
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- CN
- China
- Prior art keywords
- copper
- end ring
- rotor
- copper alloy
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 239000010949 copper Substances 0.000 title claims abstract description 115
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 115
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 72
- 239000000463 material Substances 0.000 claims description 8
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Induction Machinery (AREA)
Abstract
The utility model belongs to technical field of motors, specifically provides a kind of motor and its copper rotor structure.The utility model aim to solve the problem that existing copper rotor when motor runs at high speed because centrifugal force it is larger easily deform upon the problem of.The copper rotor structure of the utility model mainly includes rotor core, copper conducting bar, copper alloy end ring and fine copper end ring.Wherein, copper alloy end ring and fine copper end ring are each passed through after the rotor slot that the both ends of copper conducting bar are passed through in copper conducting bar on rotor core.Further, the both ends of rotor core contradict connection there are one copper alloy end ring respectively, and multiple fine copper end ring overlay the side of the copper alloy end ring far from rotor core successively.Therefore, the copper rotor structure of the utility model can improve the mechanical strength of rotor by copper alloy end ring, rotor be enable to bear higher rotating speed, without deforming upon；It can make rotor end ring that there is good electric conductivity on the whole by fine copper end ring.
Description
Technical field
The utility model belongs to technical field of motors, specifically provides a kind of motor and its copper rotor structure.
Background technology
With the rapid development of electric vehicle, the use of induction machine is more and more extensive.Traditional induction machine is generally adopted
With cast-aluminum rotor, but cast-aluminum rotor has the shortcomings that loss is big, volume is big, efficiency is low low with power density.
In order to improve the efficiency of motor and power density, copper rotor is especially applied by more and more applications
Onto electric vehicle.Copper rotor is typically that copper conducting bar is inserted into rotor core, then again by rotor end ring by the two of copper conducting bar
End is fixed.But since the density of copper is higher so that motor when high rotating speed is run, copper conducting bar be applied to rotor core and
Centrifugal force on rotor end ring is very big, is easy to cause rotor core and rotor end ring is deformed upon or even is broken.
Correspondingly, this field needs a kind of motor rotor construction to solve the above problems.
Utility model content
In order to solve the above problem of the prior art, in order to solve existing copper rotor when motor runs at high speed because
Centrifugal force larger easily the problem of deforming upon, the utility model provides a kind of copper rotor structure for motor, the copper
Rotor structure includes the rotor core, rotor end ring and copper conducting bar that are provided with rotor slot, and the both ends of the rotor core are set respectively
The rotor end ring is equipped with, both ends are connect respectively with the rotor end ring after the copper conducting bar passes through the rotor slot；Described turn
Sub- end ring includes the first copper alloy end ring, and the end of the first copper alloy end ring and the rotor core leans.
In the optimal technical scheme of above-mentioned copper rotor structure, the first copper alloy end ring is provided with along its axis direction
First end annular groove, the both ends of the copper conducting bar are each passed through the first end annular groove.
In the optimal technical scheme of above-mentioned copper rotor structure, the rotor end ring further includes at least one fine copper end ring,
One at least one fine copper end ring leans with the first copper alloy end ring.
In the optimal technical scheme of above-mentioned copper rotor structure, each fine copper end ring is provided with the along its axis direction
Two end ring slots, the both ends of the copper conducting bar are each passed through the second end annular groove.
In the optimal technical scheme of above-mentioned copper rotor structure, the rotor end ring further includes the second copper alloy end ring, institute
The both ends for stating the second copper alloy end ring and the copper conducting bar are respectively fixedly connected with.
In the optimal technical scheme of above-mentioned copper rotor structure, the second copper alloy end ring is provided with along its axis direction
Third end ring slot, the both ends of the copper conducting bar are each passed through the third end ring slot.
In the optimal technical scheme of above-mentioned copper rotor structure, the rotor end ring further includes at least one third copper alloy
End ring, at least one third copper alloy end ring be arranged on the first copper alloy end ring and the second copper alloy end ring it
Between.
In the optimal technical scheme of above-mentioned copper rotor structure, the rotor core includes multiple silicon steel overlapped together
Piece.
In the optimal technical scheme of above-mentioned copper rotor structure, the copper conducting bar is arranged to oxygen-free copper material or deoxidation copper material
Matter.
In addition, the utility model additionally provides a kind of motor, the motor includes the optimization technique of above-mentioned copper rotor structure
Copper rotor structure described in any one of scheme.
It will be appreciated to those of skill in the art that in the optimal technical scheme of the utility model, by rotor iron
The both ends of core set the first copper alloy end ring respectively, and make each first copper alloy end ring respectively with the end phase of rotor core
Against so that the both ends of copper conducting bar can be connected after copper conducting bar passes through rotor core with the first copper alloy end ring.Due to
The centrifugal force for the copper conducting bar that the both ends of rotor core are born is maximum, therefore the above-mentioned preferred embodiment for passing through the utility model
It can make the first copper alloy end ring to share or bear completely the centrifugal force of the copper conducting bar at this.
It will be appreciated to those of skill in the art that since copper alloy has very high mechanical strength, so passing through first
The setting of copper alloy end ring can prevent rotor from being deformed upon when running at high speed.
Further, by setting multiple fine copper end ring with good electrical properties respectively at the both ends of rotor core so that
Rotor end ring on the whole with higher mechanical strength while also with good electric conductivity.
Description of the drawings
The preferred embodiment of the utility model described with reference to the accompanying drawings, in attached drawing：
Fig. 1 is the diagrammatic cross-section of the copper rotor structure of the utility model；
Fig. 2 is the front view of the copper alloy end ring of the utility model.
Reference numerals list：
1st, shaft；2nd, rotor core；3rd, copper conducting bar；4th, rotor end ring；41 first copper alloy end ring；411st, the first end ring
Slot；42nd, fine copper end ring；43rd, the second copper alloy end ring.
Specific embodiment
It will be apparent to a skilled person that this section embodiment is used only for explaining that the technology of the utility model is former
Reason, is not intended to limit the scope of protection of the utility model.Although for example, it is to close by a certain percentage between each component in attached drawing
What system drew, but this proportionate relationship is not unalterable, those skilled in the art can as needed make adjustment to it,
To adapt to specific application scenario, the technical solution after adjustment will fall into the scope of protection of the utility model.
It should be noted that in the description of the present invention, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the term of the instruction direction such as " level ", " interior ", " outer " or position relationship is to be based on direction shown in the drawings or position relationship,
This is intended merely to facilitate description rather than instruction or implies that described device or element must have specific orientation, with specific
Azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, term " first ", " second ", "
Three " are only used for description purpose, and it is not intended that instruction or hint relative importance.
In addition it is also necessary to explanation, in the description of the present invention, unless otherwise clearly defined and limited, art
Language " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected or
It is integrally connected；Can be mechanical connection or electrical connection；It can be directly connected, it can also be by between intermediary
It connects connected, can be the connection inside two elements.To those skilled in the art, can understand as the case may be above-mentioned
Concrete meaning of the term in the utility model.
Although not showed that in figure, the motor of the utility model mainly includes casing, stator, rotor and shaft 1, should
Casing, stator, rotor and shaft 1 are radially sequentially arranged from outside to inside.In the preferred embodiment of the utility model, rotor
It is set as copper rotor structure.
As shown in Figure 1, the copper rotor structure of the utility model mainly includes rotor core 2, copper conducting bar 3 and rotor end ring 4.
Wherein, rotor core 2 is provided with rotor slot (not shown) along its axis direction.The both ends of copper conducting bar 3 are passed through in copper conducting bar 3
It is exposed at the both ends of rotor core 2 after rotor slot.Every one end of copper conducting bar 3 is connected separately with a rotor end ring 4 so that more
Root copper conducting bar 3 is realized by rotor end ring 4 and is electrically connected.
In the preferred embodiment of the utility model, rotor core 2 is overrided to form by multiple punching silicon-steels, and every
Multiple slots are both provided on a silicon steel sheet so that all silicon steel sheet stacks being capable of shape by the slot after being added together
Into rotor slot.In addition, those skilled in the art can also be as needed, rotor core 2 is arranged to other any feasible shapes
Formula, for example, rotor core 2 is arranged to an overall structure.
Further, in the preferred embodiment of the utility model, all copper conducting bars 3 are all using oxygen-free copper, deoxidized cooper
Or other fine copper materials are made.Or those skilled in the art can also be as needed, uses other copper materials or copper alloy
Make copper conducting bar 3.
As depicted in figs. 1 and 2, the rotor end ring 4 of the utility model is main including the first copper alloy end ring 41 and multiple pure
Copper end ring 42.Wherein, the first copper alloy end ring 41 is provided with first end annular groove 411, fine copper end ring 42 along its along its axis direction
Axis direction is provided with second end annular groove (not indicated in figure).In the assembled state, the both ends of copper conducting bar 3 are each passed through
One end annular groove 411 and second end annular groove, and connect respectively with the first copper alloy end ring 41 and fine copper end ring 42.The connection is preferred
Ground can also use other connection modes, such as be interference fitted connection side as needed for welding or those skilled in the art
Formula.
As shown in Figure 1, in the assembled state, two the first copper alloy end ring 41 both ends with rotor core 2 respectively
It leans, stretches out rotor core 2 so that the first copper alloy end ring 41 can share rotor core 2 or bear copper conducting bar 3 completely
The centrifugal force that part generates in rotor operation process.Since copper alloy has higher mechanical strength, so the first copper alloy
The setting of end ring 41 can allow for the copper rotor structure of motor to run at high speed, without because copper conducting bar 3 is in rotation process
The centrifugal force of middle generation deforms upon.
In the preferred embodiment of the utility model, the first copper alloy end ring 41 is using with high intensity, high rigidity
Cu alloy material is made.Illustratively, which can be K75 copper, and the main component of the K75 copper includes copper, chromium, silicon
And titanium.
Further, in the preferred embodiment of the utility model, fine copper end ring 42 is made preferably by deoxidized cooper, with
Just the electric conductivity of rotor end ring 4 is improved.
With continued reference to Fig. 1, relative to above-mentioned embodiment, in another optionally embodiment, the utility model
Rotor end ring 4 further include the second copper alloy end ring 43, which is provided with third end along its axis direction
Annular groove (does not indicate) in figure.In the assembled state, the both ends of copper conducting bar 3 be each passed through third end ring slot and respectively with it is corresponding
The second copper alloy end ring 43 be fixedly connected, to further improve the mechanical strength of rotor end ring 4.Or people in the art
Member can also save the setting of third end ring slot as needed, make the both ends of copper conducting bar 3 respectively with 43 end of the second copper alloy end ring
Face welds together.In addition, those skilled in the art can also be as needed, the setting of the first copper alloy end ring 41 is saved, only
Retain the second copper alloy end ring 43.
In the preferred embodiment of the utility model, the second copper alloy end ring 43 is used with the first copper alloy end ring 41
Material it is identical.Or those skilled in the art can also be as needed, and the second copper alloy end ring 43 is made to be closed using with the first bronze medal
The different Copper alloy material of golden end ring 41 is made.
Further, although not showed that in figure, those skilled in the art can also be as needed, in the first copper alloy
Third copper alloy end ring is set between 41 and second copper alloy end ring 43 of end ring, it is higher to can adapt to copper rotor structure
Rotating speed.Preferably, third copper alloy end ring is identical with material used by the first copper alloy end ring 41.Or people in the art
Member can also be such that third copper alloy end ring is made of the Copper alloy material different from the first copper alloy end ring 41 as needed.
Wherein, third copper alloy end ring can be one or more, and multiple third copper alloy end ring can be stacked one upon the other together,
It can also be spaced apart with fine copper end ring 42.But in assembled state, in the rotor end ring 4 of 2 side of rotor core
All end ring be pressed against each other, to reduce the axial length of copper rotor structure.
In conclusion the copper rotor structure of the utility model at the both ends of rotor core 2 by setting respectively with high-strength
The copper alloy end ring (41 and 43) of degree improves the mechanical strength of rotor, rotor is enable to bear higher rotating speed, without sending out
Raw deformation.The copper rotor structure of the utility model at the both ends of rotor core 2 also by setting respectively with more low-resistance pure
Copper end ring 42 makes rotor end ring 4 have good electric conductivity on the whole.
Specifically, copper conducting bar 3 can generate the centrifugal force away from rotor in rotor high speed rotation along the radial direction of rotor.Due to
The silicon steel sheet itself for forming rotor core 2 has very high mechanical strength, so copper conducting bar 3 is located at the part in rotor core 2
The centrifugal force of generation can be born by rotor core 2.And copper conducting bar 3 stretches out the part of rotor core 2 then by the first copper alloy end
Ring 41 is born, and the edge of rotor core 2 is applied so as to the part for reducing or eliminating the stretching rotor core 2 of copper conducting bar 3
Centrifugal force.But since the part that copper conducting bar 3 stretches out rotor core 2 is longer, the first copper alloy end ring 41 is only set to be easy to
The part that copper conducting bar 3 stretches out the first copper alloy end ring 41 is caused to occur bending and deformation due to centrifugal force is excessive.It is asked to solve this
The utility model is inscribed also in the second copper alloy of end set end ring 43 of copper conducting bar 3.
Further, by setting fine copper end ring 42 in the outside of the first copper alloy end ring 41, copper alloy end ring can be solved
The problem of resistance is big, electric conductivity is poor makes rotor end ring 4 have good electric conductivity on the whole.
So far, it has been combined preferred embodiment shown in the drawings and describes the technical solution of the utility model, still, this
Field technology personnel are it is easily understood that the scope of protection of the utility model is expressly not limited to these specific embodiments.
Without departing from the utility model principle under the premise of, those skilled in the art can make the relevant technologies feature equivalent change
Or replace, the technical solution after these are changed or replace it is fallen within the scope of protection of the utility model.
Claims (10)
1. a kind of copper rotor structure for motor, the copper rotor structure includes being provided with rotor core, the rotor of rotor slot
End ring and copper conducting bar, the both ends of the rotor core are respectively arranged with the rotor end ring, and the copper conducting bar passes through the rotor
Both ends are connect respectively with the rotor end ring after slot；
It is characterized in that, the rotor end ring includes the first copper alloy end ring, the first copper alloy end ring and the rotor iron
The end of core leans.
2. the copper rotor structure according to claim 1 for motor, which is characterized in that the first copper alloy end ring edge
Its axis direction is provided with first end annular groove, and the both ends of the copper conducting bar are each passed through the first end annular groove.
3. the copper rotor structure according to claim 2 for motor, which is characterized in that the rotor end ring further include to
A few fine copper end ring, one at least one fine copper end ring leans with the first copper alloy end ring.
4. the copper rotor structure according to claim 3 for motor, which is characterized in that each fine copper end ring along its
Axis direction is provided with second end annular groove, and the both ends of the copper conducting bar are each passed through the second end annular groove.
5. the copper rotor structure for motor according to claim 2 or 4, which is characterized in that the rotor end ring also wraps
The second copper alloy end ring is included, the both ends of the second copper alloy end ring and the copper conducting bar are respectively fixedly connected with.
6. the copper rotor structure according to claim 5 for motor, which is characterized in that the second copper alloy end ring edge
Its axis direction is provided with third end ring slot, and the both ends of the copper conducting bar are each passed through the third end ring slot.
7. the copper rotor structure according to claim 5 for motor, which is characterized in that the rotor end ring further include to
A few third copper alloy end ring, at least one third copper alloy end ring are arranged on the first copper alloy end ring and described
Between second copper alloy end ring.
8. the copper rotor structure according to claim 7 for motor, which is characterized in that the rotor core includes multiple
The silicon steel sheet overlapped together.
9. the copper rotor structure according to claim 7 for motor, which is characterized in that the copper conducting bar is arranged to anaerobic
Copper material or deoxidation copper material.
10. a kind of motor, which is characterized in that the motor includes the copper rotor structure described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721548595.XU CN207603316U (en) | 2017-11-17 | 2017-11-17 | Motor and its copper rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721548595.XU CN207603316U (en) | 2017-11-17 | 2017-11-17 | Motor and its copper rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207603316U true CN207603316U (en) | 2018-07-10 |
Family
ID=62759868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721548595.XU Active CN207603316U (en) | 2017-11-17 | 2017-11-17 | Motor and its copper rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207603316U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023118179A1 (en) * | 2021-12-21 | 2023-06-29 | Jheeco E-Drive Ag | Rotor for an electric machine, electric machine, and method for manufacturing a rotor for an electric machine |
-
2017
- 2017-11-17 CN CN201721548595.XU patent/CN207603316U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023118179A1 (en) * | 2021-12-21 | 2023-06-29 | Jheeco E-Drive Ag | Rotor for an electric machine, electric machine, and method for manufacturing a rotor for an electric machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200911 Address after: Susong Road West and Shenzhen Road North, Hefei Economic and Technological Development Zone, Anhui Province Patentee after: Weilai (Anhui) Holding Co., Ltd Address before: Room 502, Bank of America Center, Cecil Harcourt Road, central, Hongkong, China, 12 Patentee before: NIO NEXTEV Ltd. |
|
| TR01 | Transfer of patent right |