CN210927225U

CN210927225U - Motor stator with excellent heat dissipation effect

Info

Publication number: CN210927225U
Application number: CN201922391906.1U
Authority: CN
Inventors: 卢茂祥; 李淑晶
Original assignee: Regal Beloit Suzhou Co Ltd
Current assignee: Regal Beloit Suzhou Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-07-03
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a motor stator that radiating effect is excellent, including stator core, the wire winding, first coil end cover and second coil end cover, the wire winding is around adorning on stator core, and set up the lead wire from one end extension, first coil end cover is concave to establish annular first chamber that holds, and set up a plurality of pin hole and exhaust hole in the first bottom that holds the chamber, the second coil end cover is concave to establish annular second and holds the chamber, first coil end cover sets up the one end that has the lead wire at stator core, the lead wire is worn out from the pin hole, and the wire winding setting of tip holds the intracavity at first, the second coil end cover sets up the other end at stator core, the wire winding setting of its tip holds the intracavity at the second, first chamber and the second that holds sets up the heat-conducting layer. The utility model discloses set up the coil end cover at stator core's both ends, play the protection to the coil, through set up the heat-conducting layer between coil and end cover, promote the thermal transmission of coil, and then improve the heat-sinking capability of stator.

Description

Motor stator with excellent heat dissipation effect

Technical Field

The utility model relates to a motor field, in particular to motor stator that radiating effect is excellent.

Background

The current flowing in the winding of the motor stator not only generates copper loss due to winding resistance, but also causes high-frequency iron loss of a stator iron core product due to high-frequency alternation of a main magnetic field; meanwhile, due to the winding structure of the motor, the harmonic wave caused by the control of the frequency converter can generate extra loss on the motor; in addition, during operation of the motor, some mechanical losses are also likely to occur due to air friction on the rotor surface and mechanical friction during bearing operation. These losses constitute the main cause of heating of the motor, and during the operation of the motor, the losses are converted into the internal energy of the motor, which affects the temperature distribution in the motor.

At present, the cooling modes of the motor which are most widely applied are divided into two types: motor air cooling and motor liquid cooling. Because the specific heat capacity and the convection heat dissipation coefficient of the liquid are larger than those of air, the liquid cooling effect is obviously higher than that of motor air cooling. Generally, water cooling of a motor is performed by installing a water jacket on a housing, but when the pressure of liquid inside the water jacket is relatively high, water leakage and oil leakage of the motor occur. Moreover, the motor part which can be directly cooled by most water jackets is only the iron core, and the end part of the motor coil with a larger heat source cannot radiate heat well.

SUMMERY OF THE UTILITY MODEL

In view of the above drawbacks of the prior art, the main object of the present invention is to overcome the disadvantages of the prior art, and to disclose a motor stator with excellent heat dissipation effect, which comprises a stator core, a winding, a first coil end cap and a second coil end cap, wherein the winding is wound on the stator core, and a lead wire is extended from one end of the winding, the first coil end cap is concavely provided with an annular first accommodating cavity, and the bottom of the first accommodating cavity is provided with a plurality of lead holes and exhaust holes, the second coil end cap is concavely provided with an annular second accommodating cavity, the first coil end cap is arranged at one end of the stator core having the lead wire, the lead wire is passed through the lead hole, the winding at the end is arranged in the first accommodating cavity, the second coil end cap is arranged at the other end of the stator core, and the winding at the end is arranged in the second accommodating cavity, and the first accommodating cavity and the second accommodating cavity are internally provided with heat conducting layers.

Further, the heat conduction layer is epoxy paint or hydrosolvent paint.

Furthermore, the number of the exhaust holes is five, and the exhaust holes are respectively arranged between the three o 'clock position and the nine o' clock position of the first coil end cover at equal intervals.

The utility model discloses the beneficial effect who gains:

the utility model has the advantages that the coil end covers are arranged at the two ends of the stator core to protect the coil, and the heat transfer layer is arranged between the coil and the end covers to promote the heat transfer of the coil and further improve the heat dissipation capacity of the stator; and the overall strength of the stator is increased.

Drawings

Fig. 1 is a schematic structural view of a motor stator with excellent heat dissipation effect according to the present invention;

fig. 2 is a sectional view of a motor stator with excellent heat dissipation effect according to the present invention;

FIG. 3 is a schematic structural view of a first coil end cap;

FIG. 4 is a schematic structural view of a second coil end cap;

the reference numbers are as follows:

1. stator core, 2, wire winding, 3, first coil end cover, 4, second coil end cover, 5, lead wire, 6, heat-conducting layer, 31, first chamber, 32, lead wire hole, 33, exhaust hole, 41, the second holds the chamber.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

A motor stator with excellent heat dissipation effect is disclosed, as shown in fig. 1-4, comprising a stator core 1, a winding 2, a first coil end cover 3 and a second coil end cover 4, wherein the winding 2 is wound on the stator core 1, and a lead 5 is extended from one end of the stator core, and the lead 5 is a leading-out end of the winding 2. First coil end cover 3 is concave establishes annular first chamber 31 that holds, and set up a plurality of pin hole 32 and exhaust hole 33 in the first bottom that holds the chamber, second coil end cover 4 is concave establishes annular second and holds chamber 41, first coil end cover 3 sets up the one end that has lead wire 5 at stator core 1, lead wire 5 wears out from pin hole 32, and the wire winding 2 of tip sets up at first chamber 31 that holds, second coil end cover 4 sets up the other end at stator core 1, the wire winding 2 of its tip sets up at the second holds chamber 41, first chamber 31 and the second of holding holds and sets up heat-conducting layer 6 in the chamber 41. The heat generated by the coil is transferred to the first coil end cover 3 and the second coil end cover 4 through the heat conducting layer 6, and at this time, the first coil end cover 3 and the second coil end cover 4 can be cooled and radiated through the water jacket.

In one embodiment, as shown in FIGS. 1-4, the thermally conductive layer 6 is an epoxy or water solvent paint. Firstly, through the arrangement of the heat conduction layer 6, the heat dissipation performance is improved, and meanwhile, the connection strength between the winding 2 and the stator core 1, the first coil end cover 3 and the second coil end cover 4 is also increased.

In one embodiment, as shown in fig. 1-4, five of the exhaust holes 33 are provided, each being disposed at equal intervals between the three o 'clock and the nine o' clock positions of the first coil end cover. When the heat conductive layer 6 is poured, the internal gas is discharged from the exhaust holes 33 and the lead holes 32 to ensure that the heat conductive layer 6 fills the entire stator as much as possible. Wherein the first housing chamber 31 and the second housing chamber 41 are in communication through the stator core 1.

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and equivalent arrangements as is within the spirit and scope of the present invention.

Claims

1. A motor stator with excellent heat dissipation effect is characterized by comprising a stator core, a winding, a first coil end cover and a second coil end cover, wherein the winding is wound on the stator core, and a lead wire is extended from one end, the first coil end cover is concavely provided with a ring-shaped first accommodating cavity, and the bottom of the first containing cavity is provided with a plurality of lead holes and exhaust holes, the end cover of the second coil is concavely provided with an annular second containing cavity, the first coil end cover is arranged at one end of the stator core, which is provided with the lead wire, the lead wire penetrates out of the lead wire hole, and the winding wire of the end part is arranged in the first accommodating cavity, the second coil end cover is arranged at the other end of the stator core, the winding wire at the end part of the winding wire is arranged in the second accommodating cavity, and the heat conducting layer is arranged in the first accommodating cavity and the second accommodating cavity.

2. The motor stator with excellent heat dissipation effect as claimed in claim 1, wherein the heat conductive layer is epoxy paint or water solvent paint.

3. The motor stator with excellent heat dissipation effect as claimed in claim 1, wherein five air discharge holes are provided, and are respectively provided at equal intervals between three o 'clock and nine o' clock positions of the first coil end cover.