KR102631270B1 - Heat emission cap for motor unit - Google Patents

Abstract

A motor that includes a plurality of stators in which a rotating shaft, a rotor, and a hairpin coil are modularized, and the hairpin coil emits heat generated from a motor device consisting of a protrusion protruding outside the stator and an insertion portion located inside the stator. A device heat dissipation cap comprising: a housing that closes an open surface of the motor device in a direction parallel to the rotation axis; and an insulator ring that protrudes in a direction perpendicular to the outer surface of the housing and surrounds the protrusion.

Description

Heat emission cap for motor unit}

The present invention relates to a motor device heat dissipation cap for cooling the motor device to prevent side effects caused by an increase in temperature of the motor device when the motor device to which the hairpin coil is applied operates in an electric vehicle, etc.

Patent Document 001 relates to a vehicle motor using a hairpin winding method, and more specifically, to a hairpin winding motor device using a stator plate and a method of constructing the same. A hairpin winding motor device using a stator plate according to one aspect of the present invention includes a stator core including a plurality of slots provided along the circumferential direction, a coil inserted into and fastened to an insulating paper inserted into the slot, and disposed on both sides of the stator core, Provides a technology that includes a stator plate that supports the coil during the twisting process.

Patent document 002 relates to a hairpin winding motor, which includes a rectangular coil stator core in which a plurality of slots are formed penetrating along the circumferential direction, and each slot has a plurality of layers in the radial direction; A plurality of hairpins are fastened and interconnected to each slot to form a coil winding, and the coil weld portion and coil head portion exposed from the each coil stator core are formed to be inclined along the circumferential direction; and a housing in which a rectangular coil stator core provided with a plurality of hairpins is accommodated therein, comprising: a core coil welding portion of the hairpin located close to the rectangular coil stator core and a housing coil welding portion of the hairpin located adjacent to the housing. provides technologies that are deployed at different intervals.

Patent document 003 relates to a hairpin winding motor, which includes a stator core in which a plurality of slots are formed penetrating along the circumferential direction, and each slot has a plurality of layers in the radial direction; and a plurality of hairpins fastened to each slot and interconnected to form a coil winding, wherein each hairpin is inserted into each layer within each slot, and the coil end is inserted and the coil end is twisted and welded to form a continuous coil. It constitutes a bundle of phase coils, wherein the bundles of phase coils are connected in series through a connection coil, and the bundle of coils connected in series is connected in series with another serial connection coil through a reverse turn coil, and the reverse turn coil is of two or more types. It is arranged on the same layer and is formed in a structure where a long reverse turn coil surrounds a short reverse turn coil.

Patent Document 004 provides a stator assembly. A stator assembly according to an embodiment of the present invention includes a cylindrical stator core having a through hole so that both ends communicate with the outside, and a portion of the stator core protrudes outward in the direction of the stator core axis beyond both ends of the stator core, and the remaining portion protrudes outward from both ends of the stator core. Implemented by including a stator including a winding coil located inside the stator core, and a heat dissipation cap provided at each end of the stator core to accommodate a protruding part of the winding coil inside and contact the outer surface of the stator core. do. According to this, the heat dissipation path that can transmit the heat generated in the stator coil or transferred to the stator coil to the outside is increased and the heat dissipation efficiency is improved, resulting in excellent heat dissipation characteristics and minimizing or preventing a decrease in the operating efficiency of the motor due to heat generation. Provides skills that can be used

KR 10-2277482 (Registration date: July 8, 2021) KR 10-2019-0101647 (Publication date: September 2, 2019) KR 10-2019-0048746 (Publication date: May 9, 2019) KR 10-2021-0078874 (Publication date: June 29, 2021)

The present invention provides a heat dissipation cap for a motor device to assist the normal operation of the motor device by minimizing temperature differences within the hairpin coil included in the motor device.

The present invention seeks to provide a heat dissipation cap and a heat dissipation system that can provide heat dissipation to a portion of the hairpin coil protruding from the stator.

The present invention includes a plurality of stators in which a rotating shaft, a rotor, and a hairpin coil are modularized, and the hairpin coil dissipates heat generated in a motor device consisting of a protrusion protruding outside the stator and an insertion portion located inside the stator. The invention relates to a heat dissipation cap for a motor device, comprising: a housing that closes an open surface of the motor device in a direction parallel to the rotation axis; and an insulator ring that protrudes in a direction perpendicular to the outer surface of the housing and surrounds the protrusion.

The present invention relates to a heat dissipation cap for a motor device. In the invention presented above, the cross section of the insulator ring is configured to be shaped like a “ㄷ” with an internal space.

The present invention relates to a heat dissipation cap for a motor device. In the invention presented above, the invention includes a heat dissipation cap between the stator and the housing.

The present invention relates to a heat dissipation cap for a motor device, and in the invention presented above, it is composed of a configuration including a cooling passage formed through the inside of the housing.

The present invention relates to a heat dissipation system for a motor device to which a motor device heat dissipation cap is applied, comprising: a motor device to which the motor device heat dissipation cap presented above is applied; a fluid supply pipe that supplies cooling fluid to the cooling passage; a fluid discharge pipe that moves the cooling fluid discharged from the cooling passage; A cooling generator that receives the cooling fluid from the fluid discharge pipe, cools and regenerates the cooling fluid, and then discharges the cooling fluid to the fluid supply pipe.

The motor device heat dissipation cap of the present invention is intended to assist heat dissipation of the hairpin coil of the motor device to which the hairpin coil is applied. In addition, the heat dissipation cap is provided with a cooling passage and supplies cooling fluid to increase the heat dissipation efficiency of the hairpin coil.

Figure 1 is an exploded perspective view of a motor device and a heat dissipation cap according to an embodiment of the present invention.
Figure 2 is a perspective view of a motor device to which a heat dissipation cap is applied according to an embodiment of the present invention.
Figure 3 is a cross-sectional view of a motor device to which a heat dissipation cap is applied according to an embodiment of the present invention.
Figure 4 is a cross-sectional view of a motor device to which a heat dissipation cap is applied according to another embodiment of the present invention.
Figure 5 is a cross-sectional view of a motor device heat dissipation system according to an embodiment of the present invention.
Figure 6 is a perspective view of a motor device heat dissipation system according to an embodiment of the present invention.

Hereinafter, the most preferred embodiments of the present invention will be described in detail in order to enable those skilled in the art to easily practice the present invention.

Numbers cited in the examples below are not limited to the objects of citation and can be applied to all examples. An object that has the same purpose and effect as the configuration presented in the examples is an equivalent replacement object. The high-level concept presented in the examples includes low-level concept objects that are not described.

(Example 1-1) Includes a plurality of stators 20 in which a rotation axis, a rotor, and a hairpin coil 10 are modularized, and the hairpin coil 10 has a protrusion 11 that protrudes out of the stator 20. In the motor device heat dissipation cap for dissipating heat generated from the motor device consisting of an insertion portion 12 located inside the stator 20, the open surface of the motor device is rotated in a direction parallel to the rotation axis. Closing housing (100); It includes an insulator ring 200 that protrudes in a direction perpendicular to the outer surface of the housing 100 and surrounds the protrusion.

(Example 1-2) In Example 1-1, the motor device has a cylindrical shape with the upper and lower sides open.

(Example 1-3) In Example 1-1, the outside of the housing 100 is formed in contact with the outside of the stator 20.

The motor device of the present invention can generally be classified into a rotor and a stator. A rotating shaft, a rotor rotating by the rotating shaft, etc. may be included in the rotor, and the stator 20 and the hairpin coil 10 may be included in the stator. The rotor can obtain driving force to rotate by the magnetic field generated when current is applied to the coil. The stator 20 may include insulating paper inside, and the hairpin coil 10 may be wound dozens of times overlapping the insulating paper to generate a magnetic field. Additionally, the hairpin coil 10 may be divided into a protrusion 11 that protrudes outward from the stator 20 and an insertion portion 12 located inside the stator 20.

The present invention may be an invention based on a heat dissipation cap that insulates the protruding portion of the hairpin coil 10, that is, the protruding portion 11. The heat dissipation cap may include a housing 100 and an insulator ring 200. The housing 100 may be configured to form an exoskeleton of a heat dissipation cap. The shape of the housing 100 may be such that it can close the upper and lower sides of the rotary motor. When the rotary motor has a cylindrical shape, the rotary motor heat dissipation cap has a disk shape, and the insulator ring 200 ) may be a shape that protrudes in a direction perpendicular to the housing 100. The insulator ring 200 may be formed at a position corresponding to the protrusion 11 of the hairpin coil 10, and may generally be formed to protrude from the edge of the housing 100.

(Example 2-1) In Example 1-1, the cross section of the insulator ring 200 is formed in a “ㄷ” shape with an internal space.

(Example 2-2) In Example 2-1, the insulator ring 200 is composed of a heat conductor.

(Example 2-3) In Example 2-1, the outer surface of the inner space is formed in contact with the protrusion 11 of the hairpin coil 10.

The insulator ring 200 may be shaped to surround the protrusion of the hairpin. For this purpose, the circumferential cross-sectional shape may be formed in the shape of a “ㄷ” shape with an empty interior. The protrusion 11 of the hairpin coil 10 may be inserted into the empty interior.

The insulator ring 200 may be configured to radiate heat generated from the protrusion 11 of the hairpin coil 10 to the outside. Therefore, it can be composed of a heat conductor that can efficiently conduct heat generated from the protrusion 11 to the outside. The heat conductor is generally made of metal, but may be made of polymer material as needed.

In addition, the insulator ring 200 has an internal space and can be contained by inserting a protrusion 11 into the internal space, and the outer surface of the internal space can be formed in contact with the protrusion 11 of the hairpin coil 10. This may be to prevent the hairpin coil 10 from vibrating on its own, as vibration may occur while the motor device operates. Even if the hairpin coil 10 is configured to wind the stator 20, if it vibrates on its own due to external vibration, there may be restrictions on the uniform generation of the magnetic field, which may negatively affect the operating efficiency of the motor. This may be to block this.

(Example 3-1) In Example 2-1, a heat dissipation gap 300 is included between the stator 20 and the housing 100.

A heat dissipation gap 300, which is a gap, may be provided between the stator 20 and the housing 100. The heat dissipation gap 300 may be configured to more efficiently dissipate heat generated from the protrusion 11 of the hairpin coil 10 to the outside. This is because if the heat dissipation cap completely seals the hairpin coil 10, the basic efficiency of the heat dissipation cap, which is an invention for heat dissipation, may decrease.

(Example 3-2) In Example 3-1, the heat dissipation gap 300 is filled by extending the insulator ring 200.

(Example 3-3) In Example 3-1, the heat dissipation gap 300 is formed at regular intervals along the outer portion of the housing 100.

The heat dissipation gap 300 may be filled by extending the insulator ring 200. The insulator ring 200 of the present invention is basically configured to radiate heat generated from the protrusion 11 of the hairpin coil 10 to the outside. Of course, it can be placed in an empty space, and the insulator ring 200 This extension may be formed to fill the space of the heat dissipation gap 300.

Additionally, the heat dissipation gap 300 is formed on the outer portion of the housing 100 and may be formed at regular intervals along the outer portion. For example, if the housing 100 has a disk shape, a plurality of heat dissipation gaps 300 may be formed at regular intervals along the circumference.

(Example 4-1) In Example 1-1, a cooling passage 400 formed penetrating the inside of the housing 100 is included.

The motor device heat dissipation cap of the present invention can serve to dissipate heat generated from the protrusion 11 of the hairpin coil 10 and stabilize the temperature of the raised protrusion 11. If the temperature of the protrusion 11 is different from the temperature of the insertion part 12 located inside the stator 20, the magnetic field generated from the coil may be uneven or its strength may be weakened. In order to block this, compared to the insertion part 12, which relatively easily dissipates heat, the protruding part 11 does not, so temperature imbalance may occur, which can be solved by applying a heat dissipation cap.

In order to more efficiently adjust the temperature balance, the heat dissipation cap may include a cooling passage 400 inside the housing 100. Cooling fluid is supplied from the outside through the cooling passage 400, and the protrusion 11 of the hairpin coil 10 can be cooled by the cooling fluid.

(Example 4-2) In Example 4-1, the cooling passage 400 is formed in a ring shape along a position corresponding to the protrusion 11.

Since the purpose of the cooling passage 400 is to dissipate heat generated from the protrusion 11 of the hairpin coil 10, it may be more efficient to form it close to the protrusion 11. To this end, the cooling passage 400 may be formed along a position corresponding to the protrusion 11. For example, since the protrusion is formed in a circular shape, the cooling passage 400 may also be formed in a circular ring shape.

(Example 5-1) In the heat dissipation system of a motor device to which the motor device heat dissipation cap of Example 4-1 is applied, a fluid supply pipe 500 that supplies cooling fluid to the cooling passage 400; a fluid discharge pipe 600 that moves the cooling fluid discharged from the cooling passage 400; It includes a cooling generator 700 that receives the cooling fluid from the fluid discharge pipe, cools and regenerates the cooling fluid, and then discharges the cooling fluid to the fluid supply pipe.

(Example 5-2) In Example 5-1, a plurality of fluid supply pipes 500 are formed.

(Example 5-3) In Example 5-1, a plurality of fluid discharge pipes 600 are formed.

(Example 5-4) In Example 5-1, the cooling generator 700 includes a condensation module 710 and a compression module 720.

The present invention relates to a heat dissipation system for cooling a motor device, and in detail, may include a motor device to which the above-described heat dissipation cap is applied, a fluid supply pipe 500, a fluid discharge pipe 600, and a cooling generator 700. The fluid supply pipe 500 is configured to supply cooling fluid to the cooling passage 400, and the fluid discharge pipe 600 may be configured to receive and move the cooling fluid used for cooling the motor device from the cooling passage 400. A plurality of fluid supply pipes 500 and fluid discharge pipes 600 may be formed. This means that there may be multiple pipes flowing into the cooling passage 400 and pipes discharging from the cooling passage 400. This can be selected in various ways depending on the cooling speed or cooling efficiency of the motor device. In addition, the cooling fluid is not discarded after being used for cooling once, but can be recycled while circulating through the cooling generator 700. The cooling generator 700 may be configured to cool the cooling fluid again through a condenser, compressor, or evaporator before supplying it to the fluid supply pipe 500.

In the above, preferred embodiments of the present invention have been shown and described, but the present invention is not limited to the specific embodiments described above, and may be used in the technical field to which the invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

10: hairpin motor 11: protrusion
20: stator 100: housing
200: insulator ring 300: heat dissipation gap
400: Cooling passage 500: Fluid supply pipe
600: Fluid discharge pipe 700: Cooling generator

Claims (5)

It includes a plurality of stators (20) in which the rotation axis, rotor, and hairpin coil (10) are modularized,
The hairpin coil 10 is a motor device that emits heat generated from the motor device consisting of a protrusion 11 protruding outside the stator 20 and an insertion portion 12 located inside the stator 20. In the heat dissipation cap,
a housing 100 that closes the open side of the motor device in a direction parallel to the rotation axis;
It includes an insulator ring 200 that protrudes in a direction perpendicular to the outer surface of the housing 100 and surrounds the protrusion 11,
The cross section of the insulator ring 200 is formed in a “L” shape with an empty internal space,
The protrusion 11 of the hairpin coil 10 is inserted into the empty inner space of the insulator ring 200 so that heat generated from the protrusion 11 can be radiated to the outside through the inner space; Includes,
The insulator ring 200 is made of a heat conductor made of a polymer material,
It includes a heat dissipation gap 300 between the stator 20 and the housing 100,
The heat dissipation gap 300 is formed at regular intervals along the outer circumference of the housing 100 at a distal position of the insulator ring 200 where the protrusion 11 is inserted.
It includes; a cooling passage 400 formed penetrating the interior of the housing 100,
The cooling passage 400 is formed in a ring shape to correspond to the ring shape of the protrusion 11. A motor device heat dissipation cap comprising a.
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