CN110932475B - Oil-cooled motor - Google Patents
Oil-cooled motor Download PDFInfo
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- CN110932475B CN110932475B CN201911144678.6A CN201911144678A CN110932475B CN 110932475 B CN110932475 B CN 110932475B CN 201911144678 A CN201911144678 A CN 201911144678A CN 110932475 B CN110932475 B CN 110932475B
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- oil
- oil guide
- assembly
- rotor
- guide plate
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention relates to an oil-cooled electric machine, comprising: the oil injection device comprises a driving end cover assembly, a shell, a rear end cover assembly, an armature assembly, a rotor assembly and an oil injection pipe. The driving end cover assembly is fixed at one end of the shell, and the rear end cover assembly is fixed at the other end of the shell. The armature assembly is fixed on the inner side of the shell, one end of the rotor assembly is rotatably connected with the driving end cover, and the other end of the rotor assembly is rotatably connected with the rear end cover assembly. A first oil duct is arranged in the rear end cover assembly, and a second oil duct is arranged in the rotor assembly; the oil injection pipe is provided with a plurality of first oil injection holes which are arranged opposite to the armature assembly; one end of the oil injection pipe is connected with the driving end cover assembly, the other end of the oil injection pipe is connected with one end of the first oil duct, and the other end of the first oil duct is communicated with the second oil duct; the outer edge of the rotor assembly is provided with a plurality of second oil spray holes communicated with the second oil duct, and the second oil spray holes are opposite to the armature assembly. The oil-cooled motor provided by the invention has good cooling effect by spraying, sprinkling and throwing oil to different surfaces of the armature assembly.
Description
Technical Field
The invention relates to the technical field of motors, in particular to an oil-cooled motor.
Background
The motor generally comprises a shell, a front end cover, a rear end cover, a motor stator, a rotor and the like, each part is processed one by one according to the accuracy of a concave-convex spigot, wherein a stator core is an important part for forming a motor magnetic flux loop and fixing a stator coil, the structural design is simple, and therefore the welding process is complex. When the motor runs, the motor can generate heat, if the heat is not dissipated in time, the service life of the motor can be influenced, the existing motor heat dissipation mostly adopts air cooling, but the fan has higher noise and limited heat dissipation capacity, and the heat can not be dissipated in time. The oil cooling motor that has appeared at present, the oil cooling motor adopts the mode of oil spout to cool off, and oil in the oil cooling motor has good dielectric property, heat capacity is big, can directly cool off the part that generates heat of motor, but the oil duct and the structural design of spouting oil pipe are unreasonable, unreliable, can influence the cooling effect of motor.
Disclosure of Invention
The invention provides an oil-cooled motor, aiming at the technical problems that the structure design of an oil injection pipe of the oil-cooled motor is unreasonable and unreliable and the cooling effect of the motor is influenced in the prior art.
The technical scheme for solving the technical problems is as follows:
an oil cooled electric machine comprising: the driving end cover assembly, the shell, the rear end cover assembly, the armature assembly, the rotor assembly and the oil injection pipe;
the driving end cover assembly is fixed at one end of the shell, and the rear end cover assembly is fixed at the other end of the shell; the armature assembly is fixed on the inner side of the shell, one end of the rotor assembly is rotatably connected with the driving end cover, the other end of the rotor assembly is rotatably connected with the rear end cover assembly, and the rotor assembly is arranged on the inner side of the armature assembly; a first oil duct is arranged in the rear end cover assembly, and a second oil duct is arranged in the rotor assembly; the oil injection pipe is arranged on the outer side of the armature assembly, and a plurality of first oil injection holes opposite to the armature assembly are formed in the oil injection pipe; one end of the oil injection pipe is connected with the driving end cover assembly, the other end of the oil injection pipe is connected with one end of the first oil duct, and the other end of the first oil duct is communicated with the second oil duct; and the outer edge of the rotor assembly is provided with a plurality of second oil spray holes communicated with the second oil duct, and the second oil spray holes are opposite to the armature assembly.
In the preferred scheme, the method further comprises the following steps: an oil collecting tank, a cooler and an oil pump;
the oil collecting groove is arranged at the bottom of the inner side of the shell; the oil collecting tank is communicated with the first oil duct sequentially through the cooler and the oil pump.
In its preferred aspect, the drive end cap assembly includes: the driving end cover, the first bearing and the bearing pressing plate;
the outer edge of the driving end cover is fixedly connected with the shell; a first bearing chamber is formed in the inner side of the driving end cover, and the first bearing is fixed in the first bearing chamber through the bearing pressing plate; the rotor assembly passes through the bearing pressing plate, the first bearing and the driving end cover.
In its preferred scheme, the rear end cap assembly includes: the rear end cover, the second bearing, the rotary transformer cover plate and the rotary transformer stator;
the rear end cover is connected with the shell; the inner side of the rear end cover is provided with a second bearing chamber, and the outer side of the rear end cover is provided with a rotary deformation chamber with an open outer end; the second bearing is arranged in the second bearing chamber; the rotary transformer stator is fixed in the rotary transformer chamber; the rotary transformer cover plate is fixed at the outer end of the rotary transformer chamber.
In the preferred scheme, the method further comprises the following steps: a sealing ring and a dynamic seal;
the second bearing chamber is provided with a sealing groove which is coaxially arranged with the second bearing, the sealing ring is arranged in the sealing groove, and the sealing ring is in sealing fit with the outer circle of the second bearing.
The right side of the rotary transformer stator is provided with the dynamic seal, and the dynamic seal is in sealing fit with the outer circle of the rotating shaft in the rotor assembly.
In its preferred aspect, the rotor assembly includes: the rotary shaft, the left rotor end plate, the segmented rotor, the right rotor end plate, the oil guide plate assembly, the plug screw and the rotary transformer rotor;
the rotating shaft penetrates through the first bearing and the second bearing and extends into the rotating chamber; the left rotor end plate, the segmented rotor and the right rotor end plate are fixed on the rotating shaft on the inner side of the shell, the left rotor end plate is fixed on one side of the segmented rotor, and the right rotor end plate is fixed on the other side of the segmented rotor; the plug screw is fixed on the rotating shaft in the rotating chamber; the rotary transformer rotor is fixed at the end part of the rotating shaft in the rotary transformer chamber, and the rotary transformer rotor is opposite to the rotary stator; the oil guide plate assembly is arranged in the middle of the segmented rotor, the second oil duct is arranged in the rotating shaft, oil throwing grooves are formed in the side faces of the left rotor end plate and the right rotor end plate, the second oil duct is communicated with the oil throwing grooves through the oil guide plate assembly and the segmented rotor punching sheet, and the position of a circular hole channel on the segmented rotor punching sheet corresponds to a fourth oil guide circular hole on the oil guide plate.
In its preferred scheme, oil deflector subassembly includes: the first oil guide plate and the second oil guide plate;
a middle hole matched with the rotating shaft is formed between the first oil guide plate and the second oil guide plate, the rotating shaft penetrates through the middle hole, a first oil guide hole connected with the middle hole is formed in the outer edge of the middle hole, and a second oil guide hole is formed in the outer side of the middle hole; a third oil guide hole is formed in the outer side of the second oil guide hole, and two groups of fourth oil guide holes are formed in the outer edges of the first oil guide plate and the second oil guide plate; the first oil guide plate and the second oil guide plate are buckled with each other; the first oil guide hole of the first oil guide plate is communicated with the second oil guide hole of the second oil guide plate; the group of third oil guide holes of the first oil guide plate is communicated with the group of third oil guide holes of the second oil guide plate in a staggered manner to form a first oil guide channel which is distributed in a roundabout manner; the second oil guide hole of the second oil guide plate is communicated with the inner end of the first oil guide channel, and the outer end of the first oil guide channel is communicated with the fourth oil guide hole of the first oil guide plate; the first oil guide hole of the second oil guide plate is communicated with the second oil guide hole of the first oil guide plate; the other group of third oil guide holes of the second oil guide plate is communicated with the other group of third oil guide holes of the first oil guide plate in a staggered manner to form a second oil guide channel distributed in a roundabout manner; the second oil guide hole of the first oil guide plate is communicated with the inner end of the second oil guide channel, and the outer end of the second oil guide channel is communicated with the fourth oil guide hole of the second oil guide plate; an axial oil duct communicated with the two ends is formed in the segmented rotor; one end of the axial oil duct is communicated with the fourth oil guide holes in the first oil guide plate and the second oil guide plate, and the other end of the axial oil duct is communicated with the second oil injection hole.
In the preferred scheme, a plurality of spraying oil passages which are radially distributed from the center to the periphery are formed in the inner side surfaces of the left rotor end plate and the right rotor end plate; the second oil spray hole is formed in the outer end portion of the spraying oil duct.
In its preferred scheme, the first oil guide hole is the quad slit, the second oil guide hole is the lobate shaped hole, the third oil guide hole is the quad slit, the fourth oil guide hole is the round hole.
In a preferred embodiment of the present invention, the oil injection pipe is provided with three sets of the first oil injection holes, one set of the oil injection holes is disposed opposite to the winding end of one end of the armature assembly, one set of the oil injection holes is disposed opposite to the winding end of the other end of the armature assembly, one set of the oil injection holes is disposed opposite to the yoke portion of the armature assembly, and one set of the oil injection holes is disposed opposite to the bearing pressing plate.
The oil-cooled motor provided by the invention at least has the following beneficial effects or advantages:
according to the oil-cooled motor provided by the invention, the driving end cover assembly is fixed at one end of the shell, and the rear end cover assembly is fixed at the other end of the shell; the armature assembly is fixed on the inner side of the shell, one end of the rotor assembly is rotatably connected with the driving end cover, the other end of the rotor assembly is rotatably connected with the rear end cover assembly, and the rotor assembly is arranged on the inner side of the armature assembly. A first oil duct is arranged in the rear end cover assembly, and a second oil duct is arranged in the rotor assembly; the oil injection pipe is arranged on the outer side of the armature assembly, and a plurality of first oil injection holes opposite to the armature assembly are formed in the oil injection pipe; one end of the oil injection pipe is connected with the driving end cover assembly, the other end of the oil injection pipe is connected with one end of the first oil duct, and the other end of the first oil duct is communicated with the second oil duct; the outer edge of the rotor assembly is provided with a plurality of second oil spray holes communicated with the second oil duct, and the second oil spray holes are opposite to the armature assembly. The oil-cooled motor provided by the invention is provided with two groups of oil injection holes, and oil injection cooling is respectively carried out on different surfaces of the armature assembly, so that the cooling effect is good, and the working efficiency of the oil-cooled motor is improved.
Furthermore, according to the oil-cooled motor provided by the invention, the first oil guide channel and the second oil guide channel which are distributed in a staggered manner are arranged in the oil guide plate, and the oil guide plate is greatly promoted to bear the self centrifugal force generated at the high rotating speed of the motor through the reinforcing ribs formed at the oil guide channels, so that the deformation and the damage of the oil guide plate assembly can be prevented, and the service life of the oil guide plate assembly is prolonged.
Drawings
FIG. 1 is a schematic structural diagram of an oil-cooled motor according to an embodiment of the present invention
Fig. 2 is a schematic structural view of a first oil guide plate or a second oil guide plate according to an embodiment of the present invention;
fig. 3 is a state diagram of the first oil guide plate and the second oil guide plate after being fastened according to the embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
10-a rear end cover assembly, 101-a rear end cover, 102-a rotary variable cover plate, 104-a rotary variable stator, 105-an external socket, 20-a rotor assembly, 201-a rotating shaft, 202-a left rotor end plate, 203-a segmented rotor, 204-a right rotor end plate, 206-a plug screw, 207-a second bearing, 208-a rotary variable rotor, 209-a sealing ring, 30-a shell, 40-an armature assembly, 50-a driving end cover assembly, 501-a driving end cover, 502-a first bearing, 503-a bearing pressing plate, 60-an oil injection pipe, 11-a middle hole, 12-a first oil guide hole, 13-a second oil guide hole, 14-a third oil guide hole and 15-a fourth oil guide hole.
Detailed Description
The invention provides an oil-cooled motor, aiming at the technical problems that the structure design of an oil injection pipe of the oil-cooled motor is unreasonable and unreliable and the cooling effect of the motor is influenced in the prior art.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides an oil-cooled motor, referring to fig. 1, including: the drive end cover assembly 50, the shell 30, the rear end cover assembly 10, the armature assembly 40, the rotor assembly 20, the oil spray pipe 60, the oil collecting tank, the cooler and the oil pump. The driving end cap assembly 50 is fixed to one end of the housing 30, and the rear end cap assembly 10 is fixed to the other end of the housing 30. The armature assembly 40 is fixed inside the housing 30, one end of the rotor assembly 20 is rotatably connected with the driving end cover assembly 50, the other end is rotatably connected with the rear end cover assembly 10, and the rotor assembly 20 is arranged inside the armature assembly 40. A first oil passage is arranged in the rear end cover assembly 10, and a second oil passage is arranged in the rotor assembly 20. The oil spray pipe 60 is arranged outside the armature assembly 40, and a plurality of first oil spray holes opposite to the armature assembly 40 are formed in the oil spray pipe 60. One end of the oil injection pipe 60 is connected with the driving end cover assembly 50, the other end is connected with one end of a first oil passage, and the other end of the first oil passage is communicated with a second oil passage.
The outer edge of the rotor assembly 20 is provided with a plurality of second oil injection holes communicated with the second oil passage, and the second oil injection holes are arranged opposite to the armature assembly 40. The oil collecting groove is arranged at the bottom of the inner side of the shell 30; the oil collecting tank is communicated with the first oil duct sequentially through the cooler and the oil pump. When the oil cooling device works, the oil pump conveys oil in the oil collecting tank to the first oil duct, and part of the oil in the first oil duct is sprayed on the armature assembly 40 through the first oil spray hole to cool the armature assembly 40. Part of the oil in the first oil passage enters the second oil passage, and the oil in the second oil passage is sprayed on the armature assembly 40 through the second oil spray hole to cool the armature assembly 40. The main structure of the oil-cooled motor provided by the embodiment of the present invention is further explained below.
Referring to fig. 1, among other things, the drive end cap assembly 50 includes: a drive end cap 501, a first bearing 502, and a bearing pressure plate 503. The outer edge of the driving end cap 501 is fixedly connected with the housing 30. A first bearing 502 chamber is formed in the inner side of the driving end cover 501, and the first bearing 502 is fixed in the first bearing 502 chamber through a bearing pressing plate 503; rotor assembly 20 passes through bearing press plate 503, first bearing 502 and drive end cap 501. One end of the oil spraying pipe 60 is inserted into the blind hole of the driving end cover 501, so that the phenomenon that the oil spraying pipe 60 is bent due to a cantilever structure to influence the spraying direction and the cooling effect under the high-frequency and long-time vibration condition can be avoided. A blind hole on the driving end cover 501 is used for supporting the tail part of the oil injection pipe 60; when the driving end cover 501 is assembled and matched with the left inner spigot of the shell 30, the blind hole is not easy to align with the oil injection pipe 60 due to the small fit clearance between the blind hole and the oil injection pipe 60; the edges of the blind holes are chamfered, so that the end parts of the oil injection pipes 60 can be conveniently guided to be smoothly inserted into the blind holes.
Referring to fig. 1, the rear end cap assembly 10 includes: rear end cap 101, second bearing 207, whirl apron 102, whirl stator 104, sealing washer 209 and dynamic seal. The armature assembly 40 is matched with an inner spigot on the rear end cover and is fastened by bolts in the axial direction. The end of the housing 30 is fitted to the spigot of the rear end cap, and a gap is provided between the outer circumferential surface of the armature assembly 40 and the housing 30 through which the fuel injection pipe 60 passes. The inner side of the rear end cover 101 is provided with a second bearing chamber, and the outer side of the rear end cover 101 is provided with a rotary deformation chamber with an open outer end. A second bearing 207 is disposed within the second bearing chamber; the resolver stator 104 is fixed in the resolver chamber; a spin cover 102 is secured to the outer end of the spin chamber. The second bearing 207 chamber is provided with a sealing groove which is coaxial with the second bearing 207, a sealing ring 209 is arranged in the sealing groove, and the sealing ring 209 is in sealing fit with the outer edge of the second bearing 207. The passage through which the cooling oil source is provided to the rotor assembly 20 is unblocked by the lubrication of the second bearing 207. The right side of the rotary transformer stator 104 is provided with a dynamic seal, and the dynamic seal is in sealing fit with the outer circle of the rotating shaft in the rotor assembly 20. An external socket 105 for wiring is also provided inside the rear cover 101.
Referring to fig. 1, the rotor assembly 20 includes: the rotor comprises a rotating shaft 201, a left rotor end plate 202, a segmented rotor 203, a right rotor end plate 204, an oil guide plate assembly, a plug screw 206 and a rotary transformer 208. The rotating shaft 201 passes through the first bearing 502 and the second bearing 207 and extends into the rotating chamber. A left rotor end plate 202, a segmented rotor 203, and a right rotor end plate 204 are sequentially fixed to the rotating shaft 201 inside the casing 30, the left rotor end plate 202 is fixed to one side of the segmented rotor 203, and the right rotor end plate 204 is fixed to the other side of the segmented rotor 203. The plug screw 206 is fixed on the rotating shaft 201 in the rotating chamber, and the plug screw 206 plays a limiting role. The rotor 208 is fixed to an end of the rotating shaft 201 in the rotor chamber, and the rotor 208 is disposed to face the rotating stator. The oil guide plate assembly is arranged in the middle of the segmented rotor 203, the second oil duct is arranged in the rotating shaft 201, oil throwing grooves are formed in the side faces of the left rotor end plate 202 and the right rotor end plate 204, and the outer ends of the oil throwing grooves are the second oil spray holes. The second oil duct is communicated with the oil throwing groove through the oil guide plate assembly and the segmented rotor punching, and the position of the circular hole channel on the segmented rotor punching corresponds to a fourth oil guide circular hole on the oil guide plate.
Referring to fig. 2 and 3, the oil guide plate assembly includes: the first oil guide plate and the second oil guide plate. Wherein the first oil guide plate and the second oil guide plate can adopt the same structure manufactured by a unified die, a middle hole 11 matched with the rotating shaft 201 is formed in the middle of the first oil guide plate and the second oil guide plate, and the rotating shaft 201 penetrates through the middle hole 11. The outer edges of the middle holes 11 of the first oil guide plate and the second oil guide plate are provided with a first oil guide hole 12 connected with the middle holes 11, the outer side of the middle holes 11 is also provided with a second oil guide hole 13, the outer side of the second oil guide hole 13 is provided with a plurality of third oil guide holes 14 which are linearly arranged, and the outer edges of the first oil guide plate and the second oil guide plate are provided with a fourth oil guide hole 15. The first oil guide plate and the second oil guide plate are buckled with each other (the first oil guide plate and the second oil guide plate with the same structure need to be buckled in a positive and negative mode), and two oil guide paths are formed in the oil guide plates. Wherein, the first oil guide path is: the first oil guide plate first oil guide hole 12 is communicated with the second oil guide hole 13 of the second oil guide plate; the group of third oil guide holes 14 of the first oil guide plate is communicated with the group of third oil guide holes 14 of the second oil guide plate in a staggered manner to form a first oil guide channel which is distributed in a circuitous manner. The second oil guide hole 13 of the second oil guide plate is communicated with the inner end of the first oil guide channel, and the outer end of the first oil guide channel is communicated with the fourth oil guide hole 15 of the first oil guide plate. Wherein, the circulation direction of fluid does: the oil enters the first oil guiding hole 12 of the first oil guiding plate from the second oil duct in the rotating shaft 201, and the oil sequentially passes through the first oil guiding hole 12 of the first oil guiding plate, the second oil guiding hole 13 of the second oil guiding plate, and the first oil guiding duct to enter the fourth oil guiding hole 15 of the first oil guiding plate. The second oil guide path is as follows: the first oil guide hole 12 of the second oil guide plate is communicated with the second oil guide hole 13 of the first oil guide plate, and the other group of third oil guide holes 14 of the second oil guide plate is communicated with the other group of third oil guide holes 14 of the first oil guide plate in a staggered manner to form a second oil guide channel which is distributed in a circuitous manner. The second oil guide hole 13 of the first oil guide plate is communicated with the inner end of the second oil guide channel, and the outer end of the second oil guide channel is communicated with the fourth oil guide hole 15 of the second oil guide plate. Wherein, the circulation direction of fluid does: the oil enters the first oil guiding hole 12 of the second oil guiding plate from the second oil duct in the rotating shaft 201, and the oil sequentially passes through the first oil guiding hole 12 of the second oil guiding plate, the second oil guiding hole 13 of the first oil guiding plate, and the second oil guiding duct to enter the fourth oil guiding hole 15 of the second oil guiding plate. An axial oil passage communicated with the two ends is formed in the segmented rotor 203; one end of the axial oil passage is communicated with the fourth oil guide holes 15 on the first oil guide plate and the second oil guide plate, and the other end of the axial oil passage is communicated with the second oil spray hole. The oil in the fourth oil guide hole 15 of the first oil guide plate and the second oil guide plate enters the axial oil passage and then is sprayed on the armature assembly 40 through the second oil spray hole. Certainly, in practical application, the oil guide plate assemblies can be uniformly and symmetrically provided with the two guide paths; two end faces of the first oil guide plate and the second oil guide plate which are buckled with each other can be provided with a plurality of reinforcing ribs which are uniformly distributed. In the embodiment of the invention, the first oil guiding hole 12 is a square hole, the second oil guiding hole 13 is a leaf-shaped hole, the third oil guiding hole 14 is a square hole, and the fourth oil guiding hole 15 is a circular hole. According to the embodiment of the invention, the first oil guide channel and the second oil guide channel which are distributed in a staggered manner are arranged, and the reinforcing ribs are formed at the oil guide channels, so that the oil guide plate is greatly promoted to bear the self centrifugal force generated under the high rotating speed of the motor, the deformation and the damage of the oil guide plate assembly can be prevented, and the service life of the oil guide plate assembly is prolonged.
A plurality of spraying oil channels radially distributed from the center to the periphery are formed in the inner side surfaces of the left rotor end plate 202 and the right rotor end plate; the second oil spout hole sets up the outer tip at the spray oil duct. Oil in the axial oil passage enters the spraying oil passage, has small centrifugal force effect and is sprayed on the armature assembly 40.
In a preferred embodiment of the present invention, the oil injection pipe 60 is provided with three sets of first oil injection holes, one set of oil injection holes is disposed opposite to the winding end of one end of the armature assembly 40, one set of oil injection holes is disposed opposite to the winding end of the other end of the armature assembly 40, one set of oil injection holes is disposed opposite to the yoke portion of the armature assembly 40, and one set of oil injection holes is disposed opposite to the bearing pressing plate 503, so as to achieve precise cooling of the armature assembly 40. The oil spray pipe 60 is arranged in the circumferential direction of 360 degrees when viewed from the axial direction of the motor, so that the armature assembly 40 is cooled more uniformly.
The oil-cooled motor provided by the invention at least has the following beneficial effects or advantages:
according to the oil-cooled motor provided by the embodiment of the invention, the driving end cover assembly is fixed at one end of the shell, and the rear end cover assembly is fixed at the other end of the shell; the armature assembly is fixed on the inner side of the shell, one end of the rotor assembly is rotatably connected with the driving end cover, the other end of the rotor assembly is rotatably connected with the rear end cover assembly, and the rotor assembly is arranged on the inner side of the armature assembly. A first oil duct is arranged in the rear end cover assembly, and a second oil duct is arranged in the rotor assembly; the oil injection pipe is arranged on the outer side of the armature assembly, and a plurality of first oil injection holes opposite to the armature assembly are formed in the oil injection pipe; one end of the oil injection pipe is connected with the driving end cover assembly, the other end of the oil injection pipe is connected with one end of the first oil duct, and the other end of the first oil duct is communicated with the second oil duct; the outer edge of the rotor assembly is provided with a plurality of second oil spray holes communicated with the second oil duct, and the second oil spray holes are opposite to the armature assembly. The oil cooling motor provided by the embodiment of the invention is provided with two groups of oil injection holes which are used for respectively carrying out oil injection cooling on different surfaces of the armature assembly, the cooling effect is good, and the working efficiency of the oil cooling motor is improved.
According to the oil-cooled motor provided by the embodiment of the invention, the first oil guide channel and the second oil guide channel which are distributed in a staggered manner are arranged in the oil guide plate, and the oil guide plate is greatly promoted to bear the self centrifugal force generated at the high rotating speed of the motor through the reinforcing ribs formed at the oil guide channels, so that the deformation and the damage of the oil guide plate assembly can be prevented, and the service life of the oil guide plate assembly is prolonged.
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 invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. An oil-cooled electric machine, comprising: the driving end cover assembly, the shell, the rear end cover assembly, the armature assembly, the rotor assembly, the oil injection pipe, the oil collecting tank, the cooler, the oil pump, the sealing ring and the dynamic seal;
the driving end cover assembly is fixed at one end of the shell, and the rear end cover assembly is fixed at the other end of the shell; the armature assembly is fixed on the inner side of the shell, one end of the rotor assembly is rotatably connected with the driving end cover, the other end of the rotor assembly is rotatably connected with the rear end cover assembly, and the rotor assembly is arranged on the inner side of the armature assembly; a first oil duct is arranged in the rear end cover assembly, and a second oil duct is arranged in the rotor assembly; the oil injection pipe is arranged on the outer side of the armature assembly, and a plurality of first oil injection holes opposite to the armature assembly are formed in the oil injection pipe; one end of the oil injection pipe is connected with the driving end cover assembly, the other end of the oil injection pipe is connected with one end of the first oil duct, and the other end of the first oil duct is communicated with the second oil duct; the outer edge of the rotor assembly is provided with a plurality of second oil injection holes communicated with the second oil duct, and the second oil injection holes are arranged opposite to the armature assembly;
the oil collecting groove is arranged at the bottom of the inner side of the shell; the oil collecting tank is communicated with the first oil duct through the cooler and the oil pump in sequence;
the drive end cap assembly includes: the driving end cover, the first bearing and the bearing pressing plate; the outer edge of the driving end cover is fixedly connected with the shell; a first bearing chamber is formed in the inner side of the driving end cover, and the first bearing is fixed in the first bearing chamber through the bearing pressing plate; the rotor assembly penetrates through the bearing pressing plate, the first bearing and the driving end cover;
the rear end cap assembly includes: the rear end cover, the second bearing, the rotary transformer cover plate and the rotary transformer stator; the rear end cover is connected with the shell; the inner side of the rear end cover is provided with a second bearing chamber, and the outer side of the rear end cover is provided with a rotary deformation chamber with an open outer end; the second bearing is arranged in the second bearing chamber; the rotary transformer stator is fixed in the rotary transformer chamber; the rotary transformer cover plate is fixed at the outer end of the rotary transformer chamber;
the second bearing chamber is provided with a sealing groove which is coaxially arranged with the second bearing, the sealing ring is arranged in the sealing groove, and the sealing ring is in sealing fit with the excircle of the second bearing; the dynamic seal is arranged on the right side of the rotary transformer stator and is in sealing fit with the outer circle of the rotating shaft in the rotor assembly;
the rotor assembly includes: the rotary shaft, the left rotor end plate, the segmented rotor, the right rotor end plate, the oil guide plate assembly, the plug screw and the rotary transformer rotor; the rotating shaft penetrates through the first bearing and the second bearing and extends into the rotating chamber; the left rotor end plate, the segmented rotor and the right rotor end plate are fixed on the rotating shaft on the inner side of the shell, the left rotor end plate is fixed on one side of the segmented rotor, and the right rotor end plate is fixed on the other side of the segmented rotor; the plug screw is fixed on the rotating shaft in the rotating chamber; the rotary transformer rotor is fixed at the end part of the rotating shaft in the rotary transformer chamber, and the rotary transformer rotor is arranged opposite to the rotary transformer stator; the oil guide plate assembly is arranged in the middle of the segmented rotor, the second oil duct is arranged in the rotating shaft, oil throwing grooves are formed in the side faces of the left rotor end plate and the right rotor end plate, the second oil duct is communicated with the oil throwing grooves through the oil guide plate assembly and the segmented rotor punching sheet, and the position of a circular hole channel on the segmented rotor punching sheet corresponds to a fourth oil guide circular hole on the oil guide plate;
oil guide plate subassembly includes: the first oil guide plate and the second oil guide plate; a middle hole matched with the rotating shaft is formed between the first oil guide plate and the second oil guide plate, the rotating shaft penetrates through the middle hole, a first oil guide hole connected with the middle hole is formed in the outer edge of the middle hole, and a second oil guide hole is formed in the outer side of the middle hole; a third oil guide hole is formed in the outer side of the second oil guide hole, and two groups of fourth oil guide holes are formed in the outer edges of the first oil guide plate and the second oil guide plate; the first oil guide plate and the second oil guide plate are buckled with each other; the first oil guide hole of the first oil guide plate is communicated with the second oil guide hole of the second oil guide plate; the group of third oil guide holes of the first oil guide plate is communicated with the group of third oil guide holes of the second oil guide plate in a staggered manner to form a first oil guide channel which is distributed in a roundabout manner; the second oil guide hole of the second oil guide plate is communicated with the inner end of the first oil guide channel, and the outer end of the first oil guide channel is communicated with the fourth oil guide hole of the first oil guide plate; the first oil guide hole of the second oil guide plate is communicated with the second oil guide hole of the first oil guide plate; the other group of third oil guide holes of the second oil guide plate is communicated with the other group of third oil guide holes of the first oil guide plate in a staggered manner to form a second oil guide channel distributed in a roundabout manner; the second oil guide hole of the first oil guide plate is communicated with the inner end of the second oil guide channel, and the outer end of the second oil guide channel is communicated with the fourth oil guide hole of the second oil guide plate; an axial oil duct communicated with the two ends is formed in the segmented rotor; one end of the axial oil duct is communicated with the fourth oil guide holes in the first oil guide plate and the second oil guide plate, and the other end of the axial oil duct is communicated with the second oil injection hole.
2. The oil-cooled motor of claim 1, wherein the inner side surfaces of the left rotor end plate and the right rotor end plate are provided with a plurality of spray oil passages radially distributed from the center to the periphery; the second oil spray hole is formed in the outer end portion of the spraying oil duct.
3. The oil-cooled motor of claim 2, wherein the first oil guide hole is a square hole, the second oil guide hole is a lobed hole, the third oil guide hole is a square hole, and the fourth oil guide hole is a circular hole.
4. The oil-cooled motor of claim 3, wherein the oil injection pipe is provided with a plurality of sets of the first oil injection holes, one set of the oil injection holes is disposed opposite to the winding end portion of one end of the armature assembly, one set of the oil injection holes is disposed opposite to the winding end portion of the other end of the armature assembly, one set of the oil injection holes is disposed opposite to the yoke portion of the armature assembly, and one set of the oil injection holes is disposed opposite to the bearing retainer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911144678.6A CN110932475B (en) | 2019-11-20 | 2019-11-20 | Oil-cooled motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911144678.6A CN110932475B (en) | 2019-11-20 | 2019-11-20 | Oil-cooled motor |
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| CN113572299A (en) * | 2020-04-28 | 2021-10-29 | 中车株洲电力机车研究所有限公司 | Oil-cooled permanent magnet motor and end cover thereof |
| CN111654145B (en) * | 2020-05-28 | 2021-08-31 | 珠海格力电器股份有限公司 | Motor end cover, motor cooling structure, motor and electric automobile |
| CN114024408B (en) * | 2021-11-24 | 2023-09-05 | 贵州航天林泉电机有限公司 | Double-cooling double-salient-pole generator |
| CN114567102B (en) * | 2022-03-03 | 2023-07-11 | 苏州睿控电动有限公司 | Oil cooling motor rotor cooling structure |
| CN115833481B (en) * | 2023-02-08 | 2023-05-12 | 深圳市鸿明机电有限公司 | Double-cooling motor |
| DE102023207707A1 (en) | 2023-08-10 | 2025-02-13 | Vitesco Technologies GmbH | Rotor for an electric motor with improved cooling properties for rotor and stator |
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| DE112010005285B4 (en) * | 2010-02-19 | 2015-02-12 | Toyota Jidosha Kabushiki Kaisha | Power transmission device with lubrication structure |
| US9793783B2 (en) * | 2014-06-27 | 2017-10-17 | Toyota Jidosha Kabushiki Kaisha | Rotor of rotary electric machine |
| CN204858880U (en) * | 2015-07-22 | 2015-12-09 | 比亚迪股份有限公司 | Cooling system and cold motor of oil of cold motor of oil |
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