CN-224218158-U - Motor stator core with good heat dissipation

CN224218158UCN 224218158 UCN224218158 UCN 224218158UCN-224218158-U

Abstract

The utility model discloses a motor stator core with good heat dissipation, which comprises a punching sheet, wherein a plurality of embedded grooves are formed in the outer surface of the punching sheet, a heat dissipation block is connected in the embedded grooves in a sliding mode, limit protruding blocks are fixedly connected to the left side and the right side of the outer surface of the heat dissipation block, three cooling pipe grooves are formed in the front surface of the heat dissipation block, and a plurality of thermal expansion adaptation grooves are formed in the outer surfaces of the three cooling pipe grooves. The embedded grooves on the outer surfaces of the fins and the radiating blocks form a modularized radiating unit, heat is conducted through direct contact between metals, the temperature rise of the stator iron core is obviously reduced, the service life of the motor is prolonged, the radiating blocks are precisely adapted to the sizes of the embedded grooves, the thermal resistance generated by contact gaps can be reduced, the heat conduction efficiency is further improved, when the cooling liquid in the cooling pipe is heated and expanded, the thermal expansion adaptation grooves absorb pipeline stress through deformation, cracking or interface leakage of the cooling pipe caused by thermal expansion is avoided, and the stability of the motor in an extreme environment is improved.

Inventors

ZHANG JIQUAN
Huan Junping
DING RENLI
XU HAO

Assignees

江阴市创佳电器有限公司

Dates

Publication Date: 20260508
Application Date: 20250509

Claims (4)

1. The motor stator core with good heat dissipation is characterized by comprising a punching sheet (1), wherein a plurality of embedded grooves (3) are formed in the outer surface of the punching sheet (1), heat dissipation blocks (4) are connected inside the embedded grooves (3) in a sliding mode, limit protruding blocks (5) are fixedly connected to the left side and the right side of the outer surface of each heat dissipation block (4), three cooling pipe grooves (6) are formed in the front surface of each heat dissipation block (4), and a plurality of thermal expansion adaptation grooves (7) are formed in the outer surface of each cooling pipe groove (6).
2. The motor stator core with good heat dissipation as set forth in claim 1, wherein the number of the heat dissipation blocks (4) and the number of the fitting grooves (3) are disposed correspondingly, and the number of the cooling tube grooves (6) and the number of the heat dissipation blocks (4) are disposed correspondingly.
3. The motor stator core with good heat dissipation as set forth in claim 1, wherein the number of the punching sheets (1) is several, and the size of the heat dissipation block (4) is adapted to the size of the embedded groove (3).
4. The motor stator core with good heat dissipation as set forth in claim 1, wherein a plurality of winding grooves (2) are formed in the inner wall of the punching sheet (1), and the number of the winding grooves (2) is corresponding to the number of the punching sheets (1).

Description

Motor stator core with good heat dissipation Technical Field The utility model relates to the technical field of motors, in particular to a motor stator core with good heat dissipation. Background Early motors had relatively low performance requirements and stator core structures and materials were relatively simple. Along with the industrial development, the application scene of the motor is continuously expanded, such as in the fields of industrial driving, transportation, household appliances and the like, higher requirements are put on performance indexes such as efficiency, power density, reliability and the like of the motor, and the stator core technology is promoted to be continuously developed. For example, a driving motor of a new energy automobile needs a stator core with high power density and high efficiency to prolong the endurance mileage of the automobile, and a high-precision motor in industrial automation needs a stator core to provide a more stable magnetic field to ensure accurate control of the motor. However, for high-precision control scenes such as a servo motor, a variable frequency motor and the like, magnetic field distortion caused by overheating of an iron core can cause back electromotive force fluctuation, the rotating speed control precision and dynamic response performance of the motor are affected, and the precision of processing equipment is possibly reduced or the operation of an automatic system is possibly unstable. Disclosure of utility model The utility model aims to provide a motor stator core with good heat dissipation, wherein a modularized heat dissipation unit is formed by an embedding groove on the outer surface of a punching sheet and a heat dissipation block, heat is conducted through direct contact between metals, the temperature rise of the stator core is obviously reduced, the service life of a motor is prolonged, the heat dissipation block is accurately matched with the embedding groove in size, the heat resistance generated by a contact gap can be reduced, and the heat conduction efficiency is further improved. In order to achieve the above purpose, the motor stator core with good heat dissipation comprises a punching sheet, wherein a plurality of embedded grooves are formed in the outer surface of the punching sheet, a heat dissipation block is connected inside the embedded grooves in a sliding mode, limiting protruding blocks are fixedly connected to the left side and the right side of the outer surface of the heat dissipation block, three cooling pipe grooves are formed in the front surface of the heat dissipation block, and a plurality of thermal expansion adaptation grooves are formed in the outer surface of each cooling pipe groove. Through the modularized design of the embedded groove and the radiating block, the limiting convex blocks and the thermal expansion adaptation groove are combined, and the radiating efficiency and the structural stability are improved. The number of the radiating blocks and the number of the embedded grooves are correspondingly arranged, and the number of the cooling pipe grooves and the number of the radiating blocks are correspondingly arranged. The quantity corresponds to set up and forms complete heat dissipation array, ensures that each regional heat all can be effectively derived through exclusive passageway. The number of the punching sheets is a plurality of, and the size of the radiating block is matched with the size of the embedded groove. The punching sheets are overlapped to expand a large heat dissipation area, and the size is adapted to reduce contact thermal resistance so as to enhance heat conduction efficiency. The inner wall of the punching sheet is provided with a plurality of winding grooves, and the number of the winding grooves and the number of the punching sheets are correspondingly arranged. The number of the winding grooves corresponds to that of the punching sheets, so that the winding layout is uniform, and the power-assisted heat is efficiently conducted to the heat dissipation module through the punching sheets. The scheme has the beneficial effects that: According to the utility model, the embedded groove, the radiating block, the limiting convex block, the cooling pipe groove and the thermal expansion adapting groove are arranged, the embedded groove on the outer surface of the punching sheet and the radiating block form a modularized radiating unit, heat is conducted through direct contact between metals, the temperature rise of a stator core is obviously reduced, the service life of a motor is prolonged, the radiating block is accurately adapted to the size of the embedded groove, the thermal resistance generated by a contact gap can be reduced, and the heat conduction efficiency is further improved. Drawings Fig. 1 is a perspective view of a motor stator core with good heat dissipation in accordance with the present utility model. Fig. 2 is a front view of a motor stator core with good