HIGH THERMAL CONDUCTIVITY STATOR COMPONENT FOR VEHICLE MOTOR BASED ON 3D PHASE CHANGE HEAT PIPE TECHNOLOGY

• US 20190326797A1
• Filed: 06/08/2019
• Published: 10/24/2019
• Est. Priority Date: 12/14/2016
• Status: Active Grant

• Current Assignee: South China University of Technology
• Original Assignee: South China University of Technology
• Inventors: TANG, Yong, SUN, Yalong, YUAN, Wei, LU, Longsheng, LI, Zongtao, WAN, Zhenping
• Granted Patent: US 10,734,867 B2
• Time in Patent Office: Days
• CPC Class Codes: F28D 15/0275 Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
• CPC Class Codes: F28D 15/04 with tubes having a capillary structure
• CPC Class Codes: H02K 3/24 with channels or ducts for cooling medium between the conductors
• CPC Class Codes: H02K 5/18 with ribs or fins for improving heat transfer
• CPC Class Codes: H02K 5/207 with openings in the casing specially adapted for ambient air
• CPC Class Codes: H02K 9/225 Heat pipes

Abstract

A high thermal conductivity stator component for vehicle motor based on 3D phase change heat pipe technology of the present invention includes a casing, a 3D phase change heat pipe, a stator core and a stator winding; the casing includes assembly passages for the 3D phase change heat pipe; the 3D phase change heat pipe assembly passages are symmetrically arranged on both sides of the casing body; a condensation section of the 3D phase change heat pipe is assembled in the assembly passages of the casing body, and an evaporation section is bonded to the stator winding. The present invention provides a high thermal conductivity stator component for vehicle motor with a simple structure, convenient installation, wide application and low cost.

Claims

1. A high thermal conductivity stator component for vehicle motor based on 3D phase change heat pipe technology, comprising a fin set casing, a 3D phase change heat pipe, a stator core and a stator winding, wherein:

the fin set casing comprises a casing body, a heat dissipating fin set, and assembly passages for the 3D phase change heat pipe, the casing body is annular, and the heat dissipating fin set is uniformly arranged on an outer surface of the casing body in a circumferential direction;

the stator core and the stator winding are located on an inner surface of the casing body;

the 3D phase change heat pipe comprises a condensation section and an evaporation section, the condensation section being assembled in the assembly passages, the evaporation section being wound around an outside of the stator winding and being bonded with the stator winding;

a number of the assembly passages is more than one;

a sheet with high thermal conductivity and high insulation performance is inserted between the evaporation section and the stator winding;

the condensation section is matched with the assembly passages by a eutectic welding, expansion joint or a glue bonding process;

the assembly passages having a circular, rectangular or curved cross section are in a blind hole structure and are symmetrically arranged on both sides of the casing body; and

the 3D phase change heat pipe is closely matched with the assembly passages.

2. The high thermal conductivity stator component for vehicle motor based on 3D phase change heat pipe technology according to claim 1, wherein the fin set casing is formed with aluminum or steel material by integrated casting or extrusion molding process.

3. The high thermal conductivity stator component for vehicle motor based on 3D phase change heat pipe technology according to claim 1, wherein the sheet is a high thermal conductivity insulating groove paper or a high thermal conductivity silicone pad.

4. The high thermal conductivity stator component for vehicle motor based on 3D phase change heat pipe technology according to claim 1, wherein the sheet has a thermal conductivity >

0.5 W/(m·

K), an insulation strength >

10 kV/mm, and a thickness of 0.1 to 0.5 mm.

5. The high thermal conductivity stator component for vehicle motor based on 3D phase change heat pipe technology according to claim 1, wherein the 3D phase change heat pipe is a copper heat pipe or an aluminum heat pipe.

6. The high thermal conductivity stator component for vehicle motor based on 3D phase change heat pipe technology according to claim 1, wherein the 3D phase change heat pipe is a sintered wick type heat pipe.

7. The high thermal conductivity stator component for vehicle motor based on 3D phase change heat pipe technology according to claim 1, wherein a wick in the 3D phase change heat pipe has a circular cross section.