CN-224204837-U - New energy automobile motor stator structure

CN224204837UCN 224204837 UCN224204837 UCN 224204837UCN-224204837-U

Abstract

The utility model discloses a new energy automobile motor stator structure which comprises a first end iron core, a middle iron core and a second end iron core, wherein the end part of the first end iron core is provided with at least one first oblique oil duct, the end part of the second end iron core is provided with at least one second oblique oil duct, a plurality of communicated grooves are distributed around the circumference of the middle iron core outside the middle iron core, a plurality of outer oil ducts can be formed between the grooves and a motor shell, and the outer oil ducts are simultaneously communicated with the first oblique oil duct and the second oblique oil duct. The utility model has simpler overall structure, less use of parts, improved assembly efficiency, reduced overall cost, and improved cooling effect of the motor stator structure.

Inventors

ZHANG XIAOTING
Xu Jinggeng
LUO MIN
YUAN YANG
MU ZHIYAN
ZHANG XIAODONG
LI DONG
XIE YANJING
TIAN LEI
CAO YONGPENG
YANG JIAN
YUAN HENG
CHEN YUN
CHENG JUN

Assignees

重庆青山工业有限责任公司

Dates

Publication Date: 20260505
Application Date: 20250605

Claims (6)

1. A new energy automobile motor stator structure is characterized by comprising a first end iron core, a middle iron core and a second end iron core, wherein the end part of the first end iron core is provided with at least one first oblique oil duct, the end part of the second end iron core is provided with at least one second oblique oil duct, one ends of the first oblique oil duct and the second oblique oil duct correspondingly penetrate through the end surfaces of the first end iron core and the second end iron core, the other ends of the first oblique oil duct and the second oblique oil duct incline and extend towards the middle iron core and towards the outer side of the first end iron core and the second end iron core until penetrating through the first end iron core and the second end iron core to be close to one end and the outer side of the middle iron core, a plurality of communicated grooves are distributed around the circumference of the middle iron core, after the middle iron core is assembled with a motor shell, a plurality of outer oil ducts are formed between the grooves and the motor shell, and the outer oil ducts are simultaneously communicated with the first oblique oil duct and the second oblique oil duct.
2. The new energy automobile motor stator structure of claim 1, wherein the first end iron core comprises a first lamination, a second lamination and a third lamination, the third lamination is attached to the middle iron core, the first lamination comprises a plurality of overlapped first punching sheets, the second lamination comprises a plurality of overlapped second punching sheets, the third lamination comprises a plurality of overlapped third punching sheets, at least one oil hole is formed in the position, close to the outer edge, of the first punching sheet in the circumferential direction, a first guide hole is formed in the position, corresponding to the oil hole, of the second punching sheet, a first guide sheet is arranged in the guide hole, one end of the first guide sheet is connected with one side, close to the axial lead of the second punching sheet, of the first guide sheet, the other side of the first guide sheet is inclined towards the middle iron core and extends towards the middle iron core, an open slot is formed in the position, corresponding to the oil hole, of the third punching sheet penetrates through the outer edge of the third punching sheet, one side, close to the axial lead of the second punching sheet, of the open slot is located on the inner side, connected with one end of the first guide sheet and the first guide hole.
3. The novel energy automobile motor stator structure of claim 1, wherein the second end iron core comprises a fourth lamination, a fifth lamination and a sixth lamination, the fourth lamination is attached to the middle iron core, the fourth lamination comprises a plurality of fourth lamination sheets stacked together, the fifth lamination comprises a plurality of fifth lamination sheets stacked together, the sixth lamination comprises a plurality of sixth lamination sheets stacked together, at least one first notch is formed in the position, close to the outer edge, of the fourth lamination sheets in the circumferential direction, the first notch penetrates through the outer edge of the third lamination sheets, a second guide hole is formed in the position, corresponding to the first notch, of the fifth lamination sheets, one end of the second guide sheet is connected with one side, far away from the axis of the fifth lamination sheets, of the second guide sheet, the other side of the second guide sheet is inclined and extends away from the direction of the middle iron core, a second notch is formed in the position, corresponding to the first notch, penetrating through the outer edge of the sixth lamination sheets, and the second notch penetrates through the outer edge of the sixth lamination sheets, and is located on the inner side, close to the axis, of the second guide hole is located on the side, close to the second guide hole.
4. The new energy automobile motor stator structure of claim 1, wherein the middle iron core comprises a middle lamination, the middle lamination comprises a plurality of seventh punching sheets stacked together, a plurality of protruding pieces are arranged on the periphery of the seventh punching sheets around the periphery of the seventh punching sheets, protruding pieces on the seventh punching sheets are arranged in a staggered mode or are alternately distributed, protruding pieces on adjacent seventh punching sheets are arranged in a staggered mode or are alternately distributed after being overlapped, and grooves are formed between two adjacent protruding pieces or between two protruding pieces at corresponding positions.
5. The motor stator structure of a new energy automobile as set forth in claim 1, wherein the first and second oblique oil passages are each a plurality of oil passages uniformly distributed around the first and second end cores, respectively.
6. The motor stator structure of a new energy automobile as claimed in claim 1, wherein the first oblique oil duct and the second oblique oil duct are arranged opposite to each other or are arranged in a staggered manner.

Description

New energy automobile motor stator structure Technical Field The utility model relates to the technical field of motors for new energy automobiles, in particular to a stator structure of a new energy automobile motor. Background Along with the development of new energy automobiles, the popularity of the new energy automobiles is higher, and the motors are core components driven by the new energy automobiles, so that the working temperature of the motors needs to be controlled in order to ensure the working performance, stability, service life and the like of the motors. In the cooling process of the new energy automobile motor in the current market during operation, the cooling mode of the stator end winding mainly adopts an oil injection ring oil injection scheme, the scheme structurally comprises two oil injection rings and four oil injection ring sealing rings, cooling oil passes through the outer surface of the stator core and enters an oil injection ring cavity, and finally the oil injection ring is used for carrying out oil injection cooling on the stator end winding. The scheme can play a role in cooling, but the parts involved in the scheme are more, BOM and management cost are high, meanwhile, the assembly process is complex, and the risk of scalding the oil injection ring and the sealing ring is also caused when the stator is hot sleeved. In another cooling scheme of the stator end winding, oil is sprayed by adopting oil spraying pipes, at least two oil spraying pipes are structurally arranged, the oil spraying pipes are fixed by a plurality of screws, cooling oil enters the oil spraying pipes and flows to oil spraying pipe nozzles to perform oil spraying and cooling on the motor end winding. The scheme also has the problems of a large number of parts, high BOM and management cost and complex assembly process, and meanwhile, the inlet of the oil injection pipe in the scheme needs to be sealed with the oil duct of the shell, so that the failure risk is increased, and the oil injection pipe and the mounting screw also need to occupy a part of arrangement space, thereby affecting the light weight and the miniaturization of the electric drive system of the new energy automobile. Based on the development trend of light weight, high power density and low cost of the new energy automobile motor, the two stator end winding cooling schemes cannot meet market demands, and a new motor stator structure is urgently needed to be provided, so that the cooling effect can be ensured, the use of parts is reduced, and meanwhile, the assembly complexity is reduced. Disclosure of utility model Aiming at the defects existing in the prior art, the utility model aims to solve the problems of complex cooling structure, more parts, high cost, unchanged assembly and low cooling effect of the existing motor stator, and provides the novel energy automobile motor stator structure which has the advantages of simpler overall structure, less use of parts, convenient and quick assembly, capability of improving the assembly efficiency, reducing the overall cost and improving the cooling effect of the motor stator structure. The technical scheme includes that the novel energy automobile motor stator structure is characterized by comprising a first end iron core, a middle iron core and a second end iron core, wherein at least one first oblique oil duct is arranged at the end of the first end iron core, at least one second oblique oil duct is arranged at the end of the second end iron core, one ends of the first oblique oil duct and the second oblique oil duct correspondingly penetrate through the end faces of the first end iron core and the second end iron core, the other ends of the first oblique oil duct and the second oblique oil duct incline and extend to the middle iron core direction and to the outer side direction of the first end iron core and the outer side of the second end iron core until penetrating through the first end iron core and the second end iron core to be close to one end and the outer side of the middle iron core, a plurality of communicated grooves are distributed around the periphery of the middle iron core, a plurality of outer oil ducts are formed between the grooves and a motor shell after the middle iron core is assembled with the motor shell, and the outer oil ducts are simultaneously communicated with the first oblique oil ducts and the second oblique oil ducts. The first end iron core comprises a first lamination, a second lamination and a third lamination, wherein the third lamination is attached to the middle iron core, the first lamination comprises a plurality of first punching sheets stacked together, the second lamination comprises a plurality of second punching sheets stacked together, the third lamination comprises a plurality of third punching sheets stacked together, at least one oil hole is formed in the position, close to the outer edge, of the first punching sheet in the circumferential di