CN219760764U - Anti-electric corrosion structure of permanent magnet motor - Google Patents
Anti-electric corrosion structure of permanent magnet motor Download PDFInfo
- Publication number
- CN219760764U CN219760764U CN202320417585.1U CN202320417585U CN219760764U CN 219760764 U CN219760764 U CN 219760764U CN 202320417585 U CN202320417585 U CN 202320417585U CN 219760764 U CN219760764 U CN 219760764U
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- Prior art keywords
- bearing
- driving end
- insulating
- permanent magnet
- end cover
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- 230000007797 corrosion Effects 0.000 title claims abstract description 18
- 238000005260 corrosion Methods 0.000 title claims abstract description 18
- 238000005536 corrosion prevention Methods 0.000 claims abstract description 6
- 239000000919 ceramic Substances 0.000 claims description 3
- 229920006351 engineering plastic Polymers 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
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- Motor Or Generator Frames (AREA)
Abstract
The utility model relates to an electric corrosion prevention structure of a permanent magnet motor, which comprises: drive end bearing, non-drive end bearing, drive end cover and non-drive end cover, the drive end cover includes: the first end cap body and the first insulated bearing chamber are nested, the non-drive end cap comprising: the second end cover body is nested with the second insulating bearing chamber; the first insulating bearing chamber is nested and the driving end bearing is arranged in the driving end cover; the second insulated bearing housing nest and the non-drive end bearing are mounted within the non-drive end cap. The anti-electric corrosion structure of the permanent magnet motor has the following beneficial effects: the first insulating bearing chamber is nested with the second insulating bearing chamber to block a closed loop between the driving end cover and the driving end bearing, and between the non-driving end cover and the non-driving end bearing, and block a path of shaft current passing through the bearing, so that the driving end bearing and the non-driving end bearing are prevented from being corroded and damaged by the shaft current.
Description
Technical Field
The utility model relates to the field of new energy automobile motors, in particular to an electric corrosion prevention structure of a permanent magnet motor.
Background
With the rapid development of new energy automobiles, the market demand of driving motors is also increasing, and at present, the new energy automobiles mainly use alternating current induction motors and permanent magnet synchronous motors. The permanent magnet synchronous motor is more in use, and the rotating speed interval and the rotating efficiency are relatively high, but the problem of bearing electric corrosion exists in the existing permanent magnet synchronous motor. When bearing electric corrosion occurs, pits are formed on the outer ring roller path and the inner ring roller path of the bearing, abnormal sound occurs on a light person to influence the performance of the motor, and the bearing is scattered on a heavy person to cause vehicle accidents.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide an electric corrosion prevention structure of a permanent magnet motor aiming at the defects in the prior art.
The technical scheme adopted for solving the technical problems is as follows: an electrolytic corrosion prevention structure of a permanent magnet motor is provided, comprising: drive end bearing, non-drive end bearing, drive end cover and non-drive end cover, the drive end cover includes: a first end cap body and a first insulated bearing chamber nest, the non-drive end cap comprising: the second end cover body is nested with the second insulating bearing chamber; the first insulating bearing chamber is nested and the driving end bearing is arranged in the driving end cover, and the first insulating bearing chamber is nested to isolate a current loop between the driving end cover and the driving end bearing; the second insulating bearing chamber nest and the non-driving end bearing are arranged in the non-driving end cover, and the second insulating bearing chamber nest isolates a current loop between the non-driving end cover and the non-driving end bearing.
In some embodiments, the material of the first insulating bearing chamber nest and the second insulating bearing chamber nest is a ceramic or engineering plastic type insulating material.
In some embodiments, the first insulating bearing housing nest is fixedly attached to the first end cap body by a plurality of first set screws.
In some embodiments, the second insulating bearing housing nest is fixedly connected to the second end cap body by a plurality of second set screws.
In some embodiments, the first insulating bearing chamber nest is provided with a first groove, a first O-ring is installed in the first groove, and the first O-ring is closely attached to the side wall of the driving end bearing.
In some embodiments, a second groove is formed in the second insulating bearing chamber nest, a second O-shaped ring is installed in the second groove, and the second O-shaped ring is tightly attached to the side wall of the non-driving end bearing.
The anti-electric corrosion structure of the permanent magnet motor has the following beneficial effects: the first insulating bearing chamber is nested with the second insulating bearing chamber to block a closed loop between the driving end cover and the driving end bearing, and between the non-driving end cover and the non-driving end bearing, and block a path of shaft current passing through the bearing, so that the driving end bearing and the non-driving end bearing are prevented from being corroded and damaged by the shaft current.
Drawings
The utility model will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic structural view of an anti-galvanic corrosion structure of a permanent magnet motor of the present utility model;
FIG. 2 is an enlarged partial view of a portion I of the anti-galvanic corrosion structure of the permanent magnet motor shown in FIG. 1;
fig. 3 is an enlarged partial view of part II of the galvanic corrosion barrier structure of the permanent magnet motor shown in fig. 1.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model relates to an electric corrosion prevention structure of a permanent magnet motor, which comprises: drive end bearing 130, non-drive end bearing 230, drive end cap 110, and non-drive end cap 210, drive end cap 110 comprises: the first end cap body and first insulating bearing housing nest 120, the non-drive end cap 210 includes: a second end cap body and a second insulated bearing chamber nest 220; the first insulating bearing chamber nest 120 and the driving end bearing 130 are arranged in the driving end cover 110, and the first insulating bearing chamber nest 120 isolates a current loop between the driving end cover 110 and the driving end bearing 130; a second insulated bearing housing nest 220 and a non-drive end bearing 230 are mounted within the non-drive end cap 210, the second insulated bearing housing nest 220 isolating the current loop between the non-drive end cap 210 and the non-drive end bearing 230.
Specifically, when the permanent magnet motor adopts the prior art and the motor is in operation, shaft voltage is generated between two ends of the rotating shaft or between shafts, if the motor, the bearing, the stator base or the auxiliary device form a closed loop, shaft current is generated under the action of the shaft voltage, and then the bearing is subjected to electric corrosion, so that the motor performance is affected. The galvanic corrosion preventing structure of the present utility model blocks the closed loop between the driving end cap 110 and the driving end bearing 130, and the non-driving end cap 210 and the non-driving end bearing 230 through the first insulating bearing chamber nest 120 and the second insulating bearing chamber nest 220, and blocks the path of the shaft current through the bearings, thereby preventing the driving end bearing 130 and the non-driving end bearing 230 from being corroded and damaged by the shaft current.
It will be appreciated that the first end cap body is provided with a first bearing chamber therein for accommodating the drive end bearing 130, and the first insulating bearing chamber nest 120 is disposed between the outer wall of the drive end bearing 130 and the inner wall of the first end cap body, so that the drive end bearing 130 and the first end cap body are completely isolated by the first insulating bearing chamber nest 120, and thus the current path between the drive end bearing 130 and the first end cap body is blocked. The second end cover body is internally provided with a second bearing chamber, the second bearing chamber is used for accommodating the non-driving end bearing 230, and the second insulating bearing chamber nest 220 is sleeved between the outer wall of the non-driving end bearing 230 and the inner wall of the second end cover body, so that the non-driving end bearing 230 and the second end cover body are completely isolated by the second insulating bearing chamber nest 220, and a current path between the non-driving end bearing 230 and the second end cover body is blocked.
Preferably, the material of the first insulating bearing housing nest 120 and the second insulating bearing housing nest 220 is a ceramic or engineering plastic type insulating material.
Further, the first insulating bearing housing nest 120 is fixedly connected to the first end cap body by a plurality of first set screws 150, and the first set screws 150 play a role in fixing to prevent the first insulating bearing housing nest 120 from moving axially and rotating circumferentially.
Further, the second insulating bearing housing nest 220 is fixedly connected to the second end cap body by a plurality of second set screws 250, and the second set screws 250 play a role in fixing to prevent the second insulating bearing housing nest 220 from moving axially and rotating circumferentially.
Further, a first groove is formed in the first insulating bearing chamber nest 120, a first O-ring 140 is installed in the first groove, and the first O-ring 140 is closely attached to the side wall of the driving end bearing 130. The first O-ring 140 may dampen the drive end bearing 130, reduce mechanical noise, and prevent radial play of the drive end bearing 130.
Further, a second groove is formed in the second insulating bearing chamber nest 220, a second O-ring 240 is installed in the second groove, and the second O-ring 240 is tightly attached to the side wall of the non-driving end bearing 230. The second O-ring 240 may dampen the non-drive end bearing 230, reduce mechanical noise, and prevent radial play of the non-drive end bearing 230.
The anti-electric corrosion structure of the permanent magnet motor has the following beneficial effects: the closed loop between the drive end cap 110 and the drive end bearing 130, the non-drive end cap 210 and the non-drive end bearing 230 is blocked by the first insulated bearing pocket nest 120 and the second insulated bearing pocket nest 220, and the path of the shaft current through the bearings is blocked, thereby avoiding the corrosion damage of the drive end bearing 130 and the non-drive end bearing 230 from the shaft current.
The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same according to the content of the present utility model, and not to limit the scope of the present utility model. All equivalent changes and modifications made with the scope of the claims should be covered by the claims.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (6)
1. An electrolytic corrosion prevention structure of a permanent magnet motor, comprising: drive end bearing, non-drive end bearing, drive end cover and non-drive end cover, its characterized in that, the drive end cover includes: a first end cap body and a first insulated bearing chamber nest, the non-drive end cap comprising: the second end cover body is nested with the second insulating bearing chamber;
the first insulating bearing chamber is nested and the driving end bearing is arranged in the driving end cover, and the first insulating bearing chamber is nested to isolate a current loop between the driving end cover and the driving end bearing;
the second insulating bearing chamber nest and the non-driving end bearing are arranged in the non-driving end cover, and the second insulating bearing chamber nest isolates a current loop between the non-driving end cover and the non-driving end bearing.
2. The electrical corrosion resistant structure of a permanent magnet machine of claim 1, wherein the material of the first and second insulating bearing housing nests is a ceramic or engineering plastic type insulating material.
3. The electrical corrosion resistant structure of a permanent magnet machine of claim 2 wherein said first insulated bearing housing nest is fixedly attached to said first end cap body by a plurality of first set screws.
4. The electrical corrosion resistant structure of a permanent magnet motor of claim 3, wherein the second insulated bearing housing nest is fixedly connected to the second end cap body by a plurality of second set screws.
5. The electrical corrosion resistant structure of a permanent magnet motor of claim 4, wherein the first insulating bearing housing nest is provided with a first groove, a first O-ring is mounted in the first groove, and the first O-ring is tightly attached to a side wall of the driving end bearing.
6. The electrical corrosion resistant structure of a permanent magnet motor of claim 5, wherein the second insulating bearing housing nest is provided with a second groove, a second O-ring is installed in the second groove, and the second O-ring is tightly attached to a side wall of the non-driving end bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320417585.1U CN219760764U (en) | 2023-03-08 | 2023-03-08 | Anti-electric corrosion structure of permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320417585.1U CN219760764U (en) | 2023-03-08 | 2023-03-08 | Anti-electric corrosion structure of permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219760764U true CN219760764U (en) | 2023-09-26 |
Family
ID=88074451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320417585.1U Active CN219760764U (en) | 2023-03-08 | 2023-03-08 | Anti-electric corrosion structure of permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219760764U (en) |
-
2023
- 2023-03-08 CN CN202320417585.1U patent/CN219760764U/en active Active
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