KR20170086900A - Motor apparatus - Google Patents

Motor apparatus Download PDF

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Publication number
KR20170086900A
KR20170086900A KR1020160006496A KR20160006496A KR20170086900A KR 20170086900 A KR20170086900 A KR 20170086900A KR 1020160006496 A KR1020160006496 A KR 1020160006496A KR 20160006496 A KR20160006496 A KR 20160006496A KR 20170086900 A KR20170086900 A KR 20170086900A
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KR
South Korea
Prior art keywords
cooling
winding end
end portion
cooling module
contact
Prior art date
Application number
KR1020160006496A
Other languages
Korean (ko)
Inventor
정호창
김덕진
조수연
Original Assignee
자동차부품연구원
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 자동차부품연구원 filed Critical 자동차부품연구원
Priority to KR1020160006496A priority Critical patent/KR20170086900A/en
Publication of KR20170086900A publication Critical patent/KR20170086900A/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
    • H02K9/005—

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

An invention for a motor device is disclosed. A motor device of the present invention includes: a rotor; A stator core which is provided so as to surround the rotor and in which a plurality of teeth are formed in the radial direction of the rotor and slots are formed between the teeth; A winding portion installed in the slot and formed so that the winding end portions protrude from both sides of the stator core; And a cooling module which is installed in the winding end portion and in which a cooling passage portion is formed to allow the cooling medium to flow.

Description

[0001] MOTOR APPARATUS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor device, and more particularly, to a motor device capable of improving the cooling performance of a winding end portion to improve the output density.

Generally, the motor device includes a stator and a rotor. The motor device is divided into an inner rotor type and an outer rotor type according to the mounting position of the stator and the rotor. In the inner rotor type motor device, a rotor is rotatably installed inside the stator. In the outer rotor type motor device, a rotor is rotatably installed on the periphery of the stator.

As the motor device is driven, heat is generated in the stator. Heat generated in the stator is dissipated to the winding end portion side in the axial center portion of the stator, so heat is concentrated in the winding end portion in the stator. As the heat is concentrated in the winding end portion, the output density of the motor device is lowered. Therefore, there is a need to improve this.

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 2015-0128154 (entitled "Motor Stator Assembly", published on Nov. 11, 2015).

SUMMARY OF THE INVENTION An object of the present invention is to provide a motor device capable of improving the cooling performance of the winding end portion and improving the output density.

A motor device according to the present invention comprises: a rotor; A stator core provided so as to surround the rotor, in which a plurality of teeth are formed in a radial direction of the rotor, and slots are formed between the teeth; A winding part installed in the slot and formed such that winding end portions protrude from both sides of the stator core; And a cooling module installed in the winding end portion and having a cooling channel portion for allowing a cooling medium to flow therethrough.

The winding end portion may be formed in an annular shape so as to be disposed along the circumferential direction of the stator core, and the cooling module may be formed in an annular shape to contact the winding end portion.

The cooling channel portion may be formed in a spiral shape along the circumferential direction of the cooling module.

The cooling module may be formed in an annular shape so as to contact the outer side of the winding end portion.

The cooling module may be formed in an annular shape so as to be in contact with the inside of the winding end portion.

Wherein the cooling module comprises: an outer cooling part formed in an annular shape so as to be in contact with an outer side of the winding end part; An end cooling portion connected to the outer cooling portion and formed in an annular shape to be in contact with an end portion of the winding end portion; And an inner cooling part connected to the end cooling part and formed in an annular shape to be in contact with the inside of the winding end part.

The cooling module may be disposed along the circumferential direction of the winding end portion and may be formed with a plurality of contact cooling portions formed in a zigzag manner along the circumferential direction of the winding end portion so as to fit between the windings of the winding end portion.

According to the present invention, the cooling module is installed in the winding end portion where heat is concentrated in the stator to cool the winding end portion. Therefore, the output of the motor device can be kept constant while reducing the size of the motor device. In addition, it is possible to prevent the winding end portion from being overheated, thereby preventing the winding end portion from being sintered.

Further, according to the present invention, since the cooling module is formed in an annular shape so as to contact outside or inside of the winding end portion, one side of the winding end portion can be cooled by the cooling module and the other side of the winding end portion can be air-

Further, according to the present invention, since the outer cooling portion, the end cooling portion and the inner cooling portion are provided so as to entirely surround the winding end portion, the entire winding end portion can be cooled by the cooling module.

Further, according to the present invention, since the contact cooling portion of the cooling module is sandwiched between the hair pin portions of the winding end portion, the heat exchange area between the winding end portion and the cooling module can be increased.

1 is a perspective view showing a motor device according to a first embodiment of the present invention.
2 is a side view showing a motor device according to a first embodiment of the present invention.
3 is a plan view showing a motor device according to a first embodiment of the present invention.
4 is a perspective view showing a motor device according to a second embodiment of the present invention.
5 is a perspective view illustrating a motor device according to a third embodiment of the present invention.
6 is a plan view showing a motor device according to a fourth embodiment of the present invention.

Hereinafter, embodiments of a motor device according to the present invention will be described with reference to the accompanying drawings. In the course of describing the motor device, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view showing a motor device according to a first embodiment of the present invention, FIG. 2 is a side view showing a motor device according to a first embodiment of the present invention, FIG. 3 is a cross- Fig. 2 is a plan view showing the motor device according to the first embodiment.

1 to 3, the motor device according to the first embodiment of the present invention includes a rotor 110, a stator core 121, a winding part 125, and a cooling module 130.

The rotor 110 is rotatably installed inside the stator core 121. The rotor 110 includes a rotor core 111 having a shaft at its center and a magnet 113 disposed along the circumferential direction of the rotor core 111. As the magnet 113, a permanent magnet is applied.

The stator 120 includes a stator core 121 and a winding section 125. The stator core 121 is installed so as to surround the rotor 110. A plurality of teeth 122 are formed in the stator core 121 in the radial direction of the rotor 110 and a slot 123 is formed between the teeth 122. The teeth 122 and the slots 123 are arranged alternately. The stator core 121 is formed by stacking a plurality of iron cores (not shown).

The winding portion 125 is installed in the slot 123. The winding part 125 is press-fitted into the slot 123 in the form of a polygonal section or a circular section in the form of a pyramid or a hallucination line. The cross section of the winding section 125 may be formed in various shapes other than polygonal and circular.

The winding end portions 126 of the winding portions 125 are formed so as to protrude from both sides of the stator core 121. The winding end portion 126 includes a plurality of hairpin portions 126a that are bent in the circumferential direction of the stator core 121 and then stand up in the axial direction of the stator core 121. [ The hair pin portions 126a are disposed at regular intervals along the circumferential direction of the stator core 121 to form the winding end portions 126. [ The hair pin portion 126a may be bent in various forms.

The section of the winding section 125 is formed in a polygonal or circular shape. A plurality of winding portions 125 are arranged in a line along the radial direction of the stator core 121 in one slot 123. The polygonal cross-section can substantially eliminate the gap between the neighboring winding sections 125, so that the integration density of the winding section 125 formed by the polygonal cross section is increased. As the integration density of the winding part 125 is increased, the output density of the motor device can be improved.

The cooling module 130 is installed in the winding end portion 126. The cooling module 130 is formed with a cooling channel portion 135 so that the cooling medium flows. Since the cooling module 130 is installed in the winding end portion 126, the winding end portion 126 that generates heat at the highest temperature in the motor device is cooled by the cooling module 130. As the winding end portion 126 is cooled by the cooling module 130, the output density of the motor device can be increased. Therefore, the output of the motor device can be kept constant while reducing the size of the motor device. In addition, it is possible to prevent the winding end portion 126 from being overheated, thereby preventing the winding portion 125 from being sintered.

The winding end portion 126 is formed in an annular shape so as to be disposed along the circumferential direction of the stator core 121 and the cooling module 130 is formed in an annular shape in contact with the winding end portion 126. Thus, the cooling module 130 can evenly cool the winding end portion 126 as a whole. Since the winding end portion 126 is projected to both sides of the stator core 121 and the cooling module 130 is in contact with the winding end portion 126, the cooling module 130 can be rotated without increasing the size of the motor device. And can be installed in the winding end portion 126.

The cooling channel portion 135 is formed in a spiral shape along the circumferential direction of the cooling module 130. The cooling medium inlet 135a of the cooling passage 135 is disposed below the winding end 126 and the cooling medium outlet 135b of the cooling passage 135 is connected to the winding end 126. [ As shown in FIG. The cooling medium inlet 135a of the cooling channel 135 is disposed above the winding end 126 and the cooling medium outlet 135b of the cooling channel 135 is connected to the winding end 126. [ As shown in FIG. Since the cooling passage portion 135 is formed in a spiral shape, the cooling medium can be cooled in a spiral manner along the cooling passage portion 135 to cool the winding end portion 126.

The cooling module 130 is formed in an annular shape so as to be in contact with the outside of the winding end portion 126. At this time, the cooling passage portion 135 is formed in a spiral shape along the inner circumferential direction of the winding end portion 126. Thus, the outer side of the winding end portion 126 is cooled by the cooling module 130, and the inner side of the winding end portion 126 can be air-cooled by the air flow. Since the winding end portion 126 is cooled by the cooling medium and air, the cooling performance of the winding end portion 126 can be improved.

4 is a perspective view showing a motor device according to a second embodiment of the present invention. Since the second embodiment is the same as the first embodiment except for the cooling module installation mode, only the cooling module will be described.

Referring to FIG. 4, the cooling module 130 is formed in an annular shape so as to be in contact with the inside of the winding end portion 126. At this time, the cooling passage portion 135 is formed in a spiral shape along the inner circumferential direction of the winding end portion 126. Thus, the inside of the winding end portion 126 is cooled by the cooling module 130, and the outside of the winding end portion 126 can be air-cooled by the air flow. Since the winding end portion 126 is cooled by the cooling medium and air, the cooling performance of the winding end portion 126 can be improved.

5 is a perspective view illustrating a motor device according to a third embodiment of the present invention. The third embodiment is the same as the first embodiment except for the installation mode of the cooling module, and therefore only the cooling module will be described.

5, the cooling module 130 includes an outer cooling part 131, an end cooling part 132, and an inner cooling part 133. [ The cross section of the cooling module 130 is formed in a substantially "?" Shape.

The outer cooling portion 131 is formed in an annular shape so as to be in contact with the outer side of the winding end portion 126. The end cooling portion 132 is connected to the outer cooling portion 131 and is formed into an annular shape so as to contact the end portion of the winding end portion 126. The inner cooling portion 133 is connected to the end cooling portion 132 and is arranged concentrically with the outer cooling portion 131 and is formed into an annular shape so as to be in contact with the inside of the winding end portion 126. Since the outer cooling portion 131, the end cooling portion 132 and the inner cooling portion 133 entirely surround the winding end portion 126, the entire winding end portion 126 can be cooled by the cooling module 130 have. In addition, the heat exchange area between the winding end portion 126 and the cooling module 130 can be increased.

6 is a plan view showing a motor device according to a fourth embodiment of the present invention. Since the fourth embodiment is the same as the first embodiment except for the cooling module, only the cooling module will be described.

6, the cooling module 130 is disposed along the circumferential direction of the winding end portion 126 and extends in the circumferential direction of the winding end portion 126 so as to fit between the hair fin portions 126a of the winding end portion 126. [ A plurality of contact cooling portions 137 are formed in a zigzag manner along the direction. The contact cooling portion 137 of the cooling module 130 is sandwiched between the hair pin portions 126a of the winding end portion 126 so that the heat exchange area between the winding end portion 126 and the cooling module 130 can be increased . Therefore, the cooling performance of the winding end portion 126 can be improved, and the output of the motor device can be improved.

In addition, since the contact cooling portion 137 of the cooling module 130 is sandwiched between the hair pin portions 126a, the installation area of the cooling module 130 in the motor device can be reduced. Therefore, the motor device can be downsized.

As described above, the cooling module 130 is installed in the winding end portion 126 where heat is concentrated in the stator to cool the winding end portion 126. Therefore, the output of the motor device can be kept constant while reducing the size of the motor device. In addition, it is possible to prevent the winding end portion 126 from being overheated, thereby preventing the winding end portion 126 from being sintered.

One side of the winding end portion 126 is cooled by the cooling module 130 and the winding end portion 126 is cooled by the cooling module 130 because the cooling module 130 is formed in an annular shape so as to contact the outside or the inside of the winding end portion 126. [ ) Can be air-cooled by the air flow.

Since the outer cooling section 131, the end cooling section 132 and the inner cooling section 133 are provided so as to entirely surround the winding end section 126, the entire winding end section 126 is provided on the cooling module 130 .

The contact cooling portion 137 of the cooling module 130 is sandwiched between the hair pin portions 126a of the winding end portion 126 so that the heat exchange area between the winding end portion 126 and the cooling module 130 is increased .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

Accordingly, the true scope of protection of the present invention should be defined by the claims.

110: rotor 111: rotor core
113: Magnet 120: Stator
121: stator core 122: teeth
123: Slot 125:
126: winding end portion 126a: hairpin portion
130: cooling module 131: outer cooling part
132: end cooling section 133: inner cooling section
135: cooling channel portion 135a: inlet portion
135b: discharge part 137: contact cooling part

Claims (7)

Rotor;
A stator core provided so as to surround the rotor, in which a plurality of teeth are formed in a radial direction of the rotor, and slots are formed between the teeth;
A winding part installed in the slot and formed so that a winding end portion protrudes to both sides of the stator core; And
And a cooling module which is installed in the winding end portion and in which a cooling passage portion is formed to allow the cooling medium to flow.
The method according to claim 1,
Wherein the winding end portion is formed in an annular shape so as to be disposed along the circumferential direction of the stator core,
Wherein the cooling module is formed in an annular shape so as to contact the winding end portion.
3. The method of claim 2,
Wherein the cooling channel portion is formed in a spiral shape along the circumferential direction of the cooling module.
3. The method of claim 2,
And the cooling module is formed in an annular shape so as to be in contact with an outer side of the winding end portion.
3. The method of claim 2,
And the cooling module is formed in an annular shape so as to be in contact with the inside of the winding end portion.
3. The method of claim 2,
The cooling module includes:
An outer cooling part formed in an annular shape to be in contact with an outer side of the winding end part;
An end cooling portion connected to the outer cooling portion and formed in an annular shape to be in contact with an end portion of the winding end portion; And
And an inner cooling part connected to the end cooling part and formed in an annular shape so as to be in contact with the inside of the winding end part.
3. The method of claim 2,
Wherein the cooling module is disposed along the circumferential direction of the winding end portion and has a plurality of contact cooling portions formed in a zigzag manner along the circumferential direction of the winding end portion so as to fit between the windings of the winding end portion.
KR1020160006496A 2016-01-19 2016-01-19 Motor apparatus KR20170086900A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160006496A KR20170086900A (en) 2016-01-19 2016-01-19 Motor apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160006496A KR20170086900A (en) 2016-01-19 2016-01-19 Motor apparatus

Publications (1)

Publication Number Publication Date
KR20170086900A true KR20170086900A (en) 2017-07-27

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KR1020160006496A KR20170086900A (en) 2016-01-19 2016-01-19 Motor apparatus

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110535256A (en) * 2018-05-25 2019-12-03 通用汽车环球科技运作有限责任公司 For cooling down the device and its manufacturing method of motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110535256A (en) * 2018-05-25 2019-12-03 通用汽车环球科技运作有限责任公司 For cooling down the device and its manufacturing method of motor
CN110535256B (en) * 2018-05-25 2021-12-28 通用汽车环球科技运作有限责任公司 Device for cooling an electric motor and method for producing the same

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