CN-224204921-U - Oil cooling motor with spray oil pipe

CN224204921UCN 224204921 UCN224204921 UCN 224204921UCN-224204921-U

Abstract

The utility model relates to an oil cooling motor with a spray oil pipe, which comprises a shell, a stator, a rotor and a spray pipe assembly, wherein a cover plate A and a cover plate B are respectively fixed at two ends of the shell, a gap is reserved between the stator and the shell, the spray pipe assembly is fixed in the gap, the spray pipe assembly comprises an axial spray oil pipe and a circumferential spray oil pipe which are mutually connected, oil holes are formed in the axial spray oil pipe and the circumferential spray oil pipe, an oil inlet pipe is further formed in the shell and is communicated with the axial spray oil pipe and/or the circumferential spray oil pipe, an axial oil passage is formed in a rotating shaft, a side wall oil hole is further formed in the axial oil passage, a radial oil inlet pipeline is formed in the cover plate A or the cover plate B, one end of the radial oil inlet pipeline is communicated with the axial spray oil pipe, the other end of the radial oil inlet pipeline extends outwards and stretches into the axial oil passage, a radial oil throwing passage is formed in a rotor core, and the side wall oil hole is communicated with the radial oil throwing passage. The stator of the motor is more uniformly cooled, and the overall heat dissipation efficiency is high.

Inventors

YANG ZURONG
WANG XIAOCHUN
YU BINQUAN
CHEN GUIBING
HUANG LILONG
LV PENG
YANG SHUNJI

Assignees

方地应用技术(上海)有限公司

Dates

Publication Date: 20260505
Application Date: 20250410

Claims (10)

1. An oil cooling motor with a spray oil pipe comprises a shell (1), a stator (2) and a rotor (3), wherein the stator (2) is fixed in the shell (1), the rotor (3) is arranged in the stator (2), a cover plate A (11) and a cover plate B (12) are respectively fixed at two ends of the shell (1), the rotor (3) comprises a rotating shaft (31) and a rotor iron core (32), two ends of the rotating shaft (31) are respectively connected with the cover plate A (11) and the cover plate B (12) in a rotating way, the oil cooling motor is characterized by further comprising a spray pipe assembly (4), a gap is reserved between the stator (2) and the shell (1), the spray pipe assembly (4) is fixed in the gap, the spray pipe assembly (4) comprises an axial spray oil pipe (41) and a spray oil pipe (42) which are connected with each other, oil holes (40) facing the stator (2) are respectively arranged on the axial spray oil pipe (41) and the circumferential oil pipe (42), an oil inlet pipe (13) is further arranged on the shell (1), the oil inlet pipe (13) is respectively connected with the cover plate A (11) and the cover plate B (12) in a rotating way, an axial oil duct (310) is further arranged on the axial side wall (310) of the axial spray oil pipe (41) and/or the axial oil pipe (310), the rotor core is characterized in that a radial oil inlet pipeline (117) is arranged on the cover plate A (11) or the cover plate B (12), one end of the radial oil inlet pipeline (117) is communicated with the axial spraying oil pipe (41), the other end of the radial oil inlet pipeline (117) extends outwards to extend into the axial oil duct (310), a radial oil throwing passage is arranged on the rotor core (32), and the side wall oil hole (311) is communicated with the radial oil throwing passage.
2. An oil-cooled motor with a spray oil pipe as set forth in claim 1, wherein at least one end of the axial spray oil pipe (41) is communicated with a bearing chamber (110) on the cover plate A (11) and/or the cover plate B (12) through a bearing oil path hose (44).
3. The oil cooling motor with the spray oil pipes, as set forth in claim 1, characterized in that the plurality of axial spray oil pipes (41) are connected to the circumferential spray oil pipes (42) at intervals, and the aperture of the oil holes (40) in the middle of the axial spray oil pipes (41) is smaller than the aperture of the oil holes (40) at two ends of the axial spray oil pipes (41).
4. The oil cooling motor with the spray oil pipe according to claim 1, wherein a plurality of connecting lugs are arranged on the outer side of the stator (2), a plurality of connecting notches are formed in the inner wall of the shell (1), the connecting lugs are fastened with the connecting notches through bolts, the spray pipe assembly (4) is arranged between the two connecting lugs, outer axial spray oil pipes (411) are further arranged on two sides of the spray pipe assembly (4), and the outer axial spray oil pipes (411) are communicated with the spray pipe assembly (4) through bridging hoses (43).
5. An oil cooled motor with spray oil pipes as claimed in claim 4, wherein the jumper hose (43) is secured to the outer axial spray oil pipe (411) and/or the axial spray oil pipe (41) by means of a tie or clip.
6. The oil cooling motor with the spray oil pipe, as set forth in claim 1, characterized in that the cover plate A (11) is further fixed with an oil pipe cover (111), the radial oil inlet pipe (117) is disposed in the oil pipe cover (111), one end of the oil pipe cover (111) extends to form a rotor oil pipe (112) extending into the rotating shaft (31), the other end of the oil pipe cover (111) is provided with a cover plate communication hole (118), the axial spray oil pipe (41) penetrates through the cover plate A (11) and then is inserted into the cover plate communication hole (118), and the rotor oil pipe (112), the radial oil inlet pipe (117) and the axial spray oil pipe (41) are mutually communicated.
7. The oil-cooled motor with the spray oil pipe as set forth in claim 1, wherein a dynamic balance plate (33) is further disposed at one end of the rotor core (32), and a plurality of fan-shaped through holes (331) are uniformly formed in the dynamic balance plate (33), so that the dynamic balance plate (33) forms an eddy current rotor, and an eddy current stator (5) is fixed on the cover plate A (11) or the cover plate B (12) corresponding to the dynamic balance plate (33).
8. The oil-cooled motor with the spray oil pipe, as set forth in claim 7, characterized in that the dynamic balance plate (33) is fixed at one end of the rotor core (32) through a steel compression ring (35), a convex ring A (333) is arranged on an inner ring of the dynamic balance plate (33) to enable the inner ring of the dynamic balance plate (33) to form a step surface, a convex ring B (352) is arranged on the steel compression ring (35) to enable an outer ring of the steel compression ring (35) to form a step surface, the steel compression ring (35) is in interference fit with the rotating shaft (31), and the steel compression ring (35) is enabled to compress the dynamic balance plate (33) at one end of the rotor core (32) through the cooperation of the two step surfaces.
9. The oil-cooled motor with the spray oil pipe as set forth in claim 8, wherein the dynamic balance plate (33) is further provided with a radial oil passage A (332), the outer side surface of the dynamic balance plate (33) is further provided with an oil throwing hole A (330), the oil throwing hole A (330) is communicated with the radial oil passage A (332), a hollowed-out oil passage (36) is formed between the steel compression ring (35) and the rotor core (32), and the hollowed-out oil passage (36) is communicated with the radial oil passage A (332) and the side wall oil hole (311).
10. The oil-cooled motor with the spray oil pipe, as set forth in claim 7, characterized in that a baffle (34) is further disposed at the other end of the rotor core (32), the baffle (34) is also fixed by a steel compression ring (35), a radial oil path B (342) is further disposed on the baffle (34), an oil throwing hole B (340) is further disposed on the outer side surface of the baffle (34), the oil throwing hole B (340) is communicated with the radial oil path B (342), a hollowed oil path (36) is formed between the steel compression ring (35) and the rotor core (32), and the hollowed oil path (36) is communicated with the radial oil path B (342) and the side wall oil hole (311).

Description

Oil cooling motor with spray oil pipe Technical Field The utility model belongs to the technical field of new energy driving motors, and particularly relates to an oil cooling motor with a spray oil pipe. Background The scheme of the new energy automobile driving motor pursues high power, low cost and high reliability, the scheme of the oil-cooled flat wire motor is more and more, the common conditions comprise a cooling structure on a stator and a cooling structure on a rotor, the cooling structure on the rotor generally needs to be led into a separate pipeline from the outside of a shell to drain cooling liquid into a rotor shaft, the structure can lead the pipelines outside the motor to be more, the production and the assembly are inconvenient, and the structural form of an oil-cooled motor stator oil way is mainly divided into the following two types: 1. The stator core yoke part is grooved to form an oil passage, namely cooling oil enters an annular groove in the middle of the core from an oil inlet nozzle at the top of the shell, and then oil injection cooling is carried out on a coil at the end part of the stator through an axial groove of the stator core yoke part; 2. the oil pipe is designed to spray and cool the stator, namely cooling oil enters the top of the motor cavity from the end of the speed reducer through the oil pipe, small holes are uniformly arranged in the oil pipe, the cooling oil flows out from the small holes, the stator is directly sprayed and cooled, the problem of uneven flow tends to exist in the motor cavity when the cooling oil is drained from the speed reducer to the motor cavity through the oil pipe, the flow is larger when the cooling oil is closer to the end of the speed reducer, the flow is smaller when the cooling oil is farther from the speed reducer, and the pipeline arrangement is uneven. Disclosure of utility model In order to solve the technical problems, the utility model aims to provide an oil-cooled motor with a spray oil pipe, which has more uniform stator cooling, high overall heat dissipation efficiency and simple structure. In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme: The utility model provides an oil cooling motor with spray oil pipe, includes casing, stator and rotor, the stator is fixed in the casing, the rotor sets up in the stator, the both ends of casing are fixed with apron A and apron B respectively, the rotor includes pivot and rotor core, the both ends of pivot rotate with apron A and apron B respectively and are connected, still include the shower subassembly, leave the clearance between stator and the casing, the shower subassembly is fixed in the clearance, the shower subassembly includes interconnect's axial spray oil pipe and circumference spray oil pipe, all be equipped with the oilhole towards the stator on axial spray oil pipe and the circumference spray oil pipe, still be equipped with into oil pipe on the casing, go into oil pipe and axial spray oil pipe and/or circumference spray oil pipe intercommunication, be equipped with axial oil duct on the pivot, and still be equipped with the lateral wall oilhole on the axial spray oil duct, be equipped with radial oil inlet pipeline on apron A or the apron B, radial oil inlet pipeline's one end and axial oil pipe intercommunication, radial oil inlet pipeline's the other end outwards extends into in the axial, be equipped with radial oil outlet on the rotor core, radial oil inlet path and radial oil duct intercommunication. Preferably, at least one end of the axial spraying oil pipe is communicated with the bearing chamber on the cover plate A and/or the cover plate B through a bearing oil path hose. The axial spraying oil pipes are connected to the circumferential spraying oil pipes at intervals, and the aperture of oil holes in the middle of the axial spraying oil pipes is smaller than that of oil holes in the two ends of the axial spraying oil pipes. The outer side of the stator is provided with a plurality of connecting lugs, the inner wall of the shell is provided with a plurality of connecting gaps, the connecting lugs are fastened with the connecting gaps through bolts, the spray pipe assembly is arranged between the two connecting lugs, two sides of the spray pipe assembly are also provided with outer axial spray oil pipes, and the outer axial spray oil pipes are communicated with the spray pipe assembly through bridging hoses. The bridging hose is preferably bound with the outer axial spraying oil pipe and/or the axial spraying oil pipe through a binding belt or a clamping hoop. According to the preferable scheme, an oil pipe cover is further fixed on the cover plate A, the radial oil inlet pipeline is arranged in the oil pipe cover, one end of the oil pipe cover extends to form a rotor oil pipe extending into the rotating shaft, a cover plate communication hole is formed in the other end of the oil pipe cover, the axial s