KR102018050B1 - Inverter built-in brushless direct current motor - Google Patents

Inverter built-in brushless direct current motor Download PDF

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Publication number
KR102018050B1
KR102018050B1 KR1020130160583A KR20130160583A KR102018050B1 KR 102018050 B1 KR102018050 B1 KR 102018050B1 KR 1020130160583 A KR1020130160583 A KR 1020130160583A KR 20130160583 A KR20130160583 A KR 20130160583A KR 102018050 B1 KR102018050 B1 KR 102018050B1
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KR
South Korea
Prior art keywords
lower casing
pcb substrate
bldc motor
capacitor
inverter
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Application number
KR1020130160583A
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Korean (ko)
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KR20150072912A (en
Inventor
임호빈
박희권
정경훈
조성국
Original Assignee
한온시스템 주식회사
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Priority to KR1020130160583A priority Critical patent/KR102018050B1/en
Publication of KR20150072912A publication Critical patent/KR20150072912A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
    • H02K2211/03—Machines characterised by circuit boards, e.g. pcb

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a BLDC motor, in which an inverter unit integrally formed with a BLDC motor for a low voltage cooling fan is arranged so that the MOSFET element (switching element) and the capacitor of the PCB board are disposed away from a motor bearing that generates a lot of heat. It relates to an inverter integrated BLDC motor that can improve the.

Description

Inverter built-in brushless direct current motor

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inverter-integrated BLDC motor, and more particularly to an inverter-integrated BLDC motor capable of improving the cooling of an inverter unit formed integrally with a BLDC motor for a low voltage cooling fan.

Brushless direct current (BLDC) motors can prevent friction and wear, which are disadvantages of conventional DC motors, and are relatively high in efficiency. Recently, BLDC motors are being applied as a cooling fan rotation motor in hybrid vehicles.

The BLDC motor is a motor that removes brushes and commutators from the DC motor and installs an electronic commutator.

And the BLDC motor assembly of a conventional low-voltage cooling fan for automobiles is composed of a motor unit and an inverter unit. At this time, the motor part rotates from the outside and is covered by the rotor housing without a separate housing, and forms a cooling hole in the rotor housing to cool the motor, and the inverter part is covered with the lower housing.

However, since the inverter part generates a lot of heat and is close to the bearing that generates a lot of heat in the motor part, a heat dissipation structure that can be cooled is required. In addition, a heat dissipation structure capable of cooling the heat generated from the MOSFET device and the capacitor formed on the PCB substrate of the inverter unit is required.

In addition, as shown in FIG. 1, there is no separate structure for cooling the inverter unit, or as shown in FIG. 2, a separate fan is installed for cooling the inverter unit, which is expensive and complicated in structure depending on the configuration of the cooling fan. There is a disadvantage of losing.

As a related art in this regard, Korean Patent Registration (10-0253231) discloses an "integral inverter cooling device".

KR 10-0253231 B1 (2000.01.22)

The present invention has been made to solve the above problems, an object of the present invention is to form a large number of MOSFET elements (switching element) and capacitor of the PCB substrate in the inverter unit formed integrally with the BLDC motor for low voltage cooling fan. It is to provide an inverter-integrated BLDC motor that can be arranged away from the generated motor bearing to improve the cooling of the inverter unit.

Inverter-integrated BLDC motor of the present invention for achieving the above object, the BLDC motor unit 100; And an inverter unit 200 formed integrally with the BLDC motor unit 100. It is made, including, the inverter unit 200, the BLDC motor unit 100 is coupled to the outside, the bearing 130 of the BLDC motor unit 100 is coupled and the receiving portion 211 is formed therein A cover provided on the lower casing 210 and the accommodating part 211 and coupled to the lower side of the lower casing to seal the PCB substrate 220 and the PCB substrate 220 to be in close contact with the inner surface of the lower casing 210. 230, wherein the PCB substrate 220 is provided at one side of the receiving portion 211 of the lower casing 210, and the PCB substrate 220 is spaced apart from the bearing 130. do.

In addition, a MOSFET device (switching device) 221 is formed on the PCB substrate 220, and the capacitor 222 protrudes outward from the PCB substrate 220.

In addition, the receiving portion 211 of the lower casing 210 is formed in the recess recess 212, characterized in that the capacitor 222 is disposed in the settle groove 212 is in close contact.

In addition, the lower casing 210 is formed to protrude radially one side of the BLDC motor unit 100 so that the heat dissipation fin 213 is formed outside the protruding portion of the lower casing 210, and the lower casing 210 is formed. The PCB substrate 220 is characterized in that disposed in the receiving portion 211 of the protruding portion.

In addition, the heat radiation fin 213 is characterized in that formed on the outer upper surface of the lower casing (210).

The inverter integrated BLDC motor of the present invention has the advantage of improving the cooling effect of the inverter unit formed integrally with the BLDC motor for the low voltage cooling fan.

1 and 2 are a perspective view and a cross-sectional schematic view showing a conventional inverter integrated BLDC motor.
3 and 4 are an exploded perspective view and an assembled perspective view showing an inverter-integrated BLDC motor of the present invention.
Figure 5 is a bottom plan view showing the arrangement of the PCB substrate in the inverter unit according to the present invention.
FIG. 6 is a cross-sectional view along AA ′ in FIG.

Hereinafter, an inverter-integrated BLDC motor of the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

3 and 4 are an exploded perspective view and an assembled perspective view showing an inverter-integrated BLDC motor of the present invention, Figure 5 is a bottom plan view showing the arrangement of the PCB substrate in the inverter unit according to the present invention.

As shown, the inverter-integrated BLDC motor 1000 of the present invention includes: a BLDC motor unit 100; And an inverter unit 200 formed integrally with the BLDC motor unit 100. It is made, including, the inverter unit 200, the BLDC motor unit 100 is coupled to the outside, the bearing 130 of the BLDC motor unit 100 is coupled and the receiving portion 211 is formed therein A cover provided on the lower casing 210 and the accommodating part 211 and coupled to the lower side of the lower casing to seal the PCB substrate 220 and the PCB substrate 220 to be in close contact with the inner surface of the lower casing 210. 230, wherein the PCB substrate 220 is provided at one side of the receiving portion 211 of the lower casing 210, and the PCB substrate 220 is spaced apart from the bearing 130.

First, the inverter-integrated BLDC motor of the present invention can be applied to a low voltage cooling fan, and is composed of the BLDC motor unit 100 and the inverter unit 200 largely so that the BLDC motor unit 100 and the inverter unit 200 are integrally integrated. Is formed.

In this case, the BLDC motor unit 100 may be an external type BLDC motor having a stator 120 disposed inside and a rotor 110 rotated outside thereof, and the rotor 110 of the BLDC motor unit 100 may be used. It is formed in the form of a casing covering the outside of the stator 120 can be coupled to the permanent magnet on the inner peripheral surface, the inner shaft is formed with a rotating shaft (112).

In addition, the inverter unit 200 includes a lower casing 210, a PCB substrate 220, and a cover 230.

At this time, the lower casing 210 is hollow to the receiving portion 211 is formed, the lower side is formed so that the PCB substrate 220 is accommodated in the receiving portion 211, the lower side is sealed by the cover 230 It is formed to be. In addition, the PCB substrate 220 is accommodated in the accommodating part 211 and is in close contact with the upper surface of the accommodating part 211, which is an inner surface of the lower casing 210.

In addition, the lower casing 210 of the inverter unit 200 has a rotor support portion 214 formed at the center of the outer upper surface, the bearing 130 is coupled to the rotor support portion 214, the rotating shaft formed in the center of the rotor 110 112 may be coupled to the bearing 130 so that the rotor 110 may be supported. At this time, the bearing 130 is coupled to the upper and lower sides of the rotor support 214, the rotor 110 may be stably supported. In addition, the bearing 130 coupled to the lower side of the rotor support 214 may be coupled to a bearing set groove recessed in the receiving portion 211 of the lower casing 210. In addition, the central portion of the stator 120 is hollow so that the rotor support 214 of the lower casing 210 may be inserted into the center of the stator 120 to fix the stator.

That is, the BLDC motor unit 100 is coupled to the outer upper side of the lower casing 210 of the inverter unit 200, and the inverter unit 200 has the PCB substrate 220 on the receiving portion 211 of the lower casing 210. After receiving and being in close contact with each other, the cover 230 is formed to be closed and sealed, and the BLDC motor unit 100 and the inverter unit 200 are integrally formed. At this time, the stator 120 of the BLDC motor unit 100 is coupled to the lower casing 210 and fixed, and the rotor 110 is rotatably coupled to the lower casing 210 through the bearing 130.

Here, the inverter unit 200, the PCB substrate 220 is provided on one side of the receiving portion 211 of the lower casing 210, the PCB substrate 220 is spaced apart from the bearing 130 do. That is, since the bearing 130 coupled to the rotor 110 rotating shaft 112 of the BLDC motor unit 100 is disposed at the center portion of the lower casing 210, a lot of heat is generated by the rotation of the rotor 110. The PCB substrate 220 is disposed to be spaced apart from the bearing 130.

Thus, overheating of the PCB substrate 220 can be prevented and cooling efficiency can be improved. In this case, the PCB substrate 220 may be in close contact with the accommodating part 211, which is an inner surface of the lower casing 210, and heat generated from the PCB substrate 220 may be discharged to the outside through the lower casing 210. The lower casing 210 may be formed of a material having high thermal conductivity to improve cooling efficiency of the PCB substrate.

In addition, a MOSFET device (switching device) 221 may be formed on the PCB substrate 220, and a capacitor 222 may protrude out of the PCB substrate 220. That is, the MOSFET device 221 which generates a lot of heat may be formed on the PCB substrate 220, and the capacitor 222 that generates a lot of heat and may protrude out of the substrate without being formed on the PCB substrate 220. By forming, the portion to generate heat can be evenly spaced apart from the bearing 130, the cooling effect can be improved. In addition, since the capacitor 222 is formed to protrude outside the PCB substrate 220, the capacitor 222 may be disposed to contact the lower casing 210, thereby improving the cooling effect.

Here, the MOSFET device 221 is a metal oxide semiconductor field effect transistor, and is a switching device widely used in digital circuits. The capacitor 222 stores electricity to charge a constant capacitance. It can be an electrical component.

In addition, the receiving portion 211 of the lower casing 210 may be concave indentation groove 212 is formed, the capacitor 222 is disposed in the settlement groove 212 may be in close contact. That is, since the capacitor 222 is generally formed in a cylindrical shape as shown in FIG. 6, a recess 212 is formed concavely in the receiving portion 211 of the lower casing 210, and the capacitor 222 is disposed in the settle groove 212. The adhesion may be increased to increase the heat transfer area, thereby improving the cooling effect.

In addition, the lower casing 210 is formed to protrude radially one side of the BLDC motor unit 100 so that the heat dissipation fin 213 is formed outside the protruding portion of the lower casing 210, and the lower casing 210 is formed. The PCB substrate 220 may be disposed in the accommodating portion 211 of the protruding portion.

That is, as shown, the lower casing 210 is formed in a cylindrical shape so as to protrude to one side in the radial direction, the protruding one side of the lower casing 210 is formed to protrude to one side than the BLDC motor unit 100, the lower The PCB substrate 220 is disposed in the accommodating portion 211 of the protruding portion of the casing 210, and the heat dissipation fin 213 is formed outside the protruding portion of the lower casing 210.

Therefore, it is easy to arrange the PCB substrate 220 so as to be spaced apart from the bearing 130, and there is an advantage of easily dissipating heat generated from the PCB substrate 220 to the outside of the lower casing 210.

In this case, the heat dissipation fin 213 may be formed on an outer upper surface of the lower casing 210. That is, the heat dissipation fins 213 are formed on the protruding outer upper surface of the lower casing 210 on which the PCB substrate 220 is disposed, so that heat generated from the PCB substrate 220 is formed on the upper surfaces of the lower casing 210 ( 213 may be quickly released to the outside to improve the cooling effect.

The heat dissipation fin 213 may be formed in various ways such as a cylindrical shape, a polygonal column shape, and a cone shape. In addition, the rotor 110 of the BLDC motor unit 100 may be formed in a housing shape and a plurality of cooling holes 111 for cooling may be formed on an upper surface thereof.

The present invention is not limited to the above-described embodiments, and the scope of application of the present invention is not limited to those of ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, various modifications can be made.

1000: Inverter Integrated BLDC Motor
100: BLDC motor part
110: rotor 111: cooling hole
112: rotation axis 120: stator
130: bearing
200: inverter unit
210: lower casing 211: receiving portion
212: settle groove 213: heat dissipation fin
214: rotor support
220: PCB substrate 221: MOSFET device (switching device)
222 capacitor
230: cover

Claims (5)

BLDC motor unit 100; And an inverter unit 200 formed integrally with the BLDC motor unit 100. It is made, including
The inverter unit 200, the BLDC motor unit 100 is coupled to the outside, the bearing 130 of the BLDC motor unit 100 is coupled to the lower casing 210, the receiving portion 211 is formed therein, Included in the receiving portion 211 is a PCB substrate 220 which is in close contact with the inner surface of the lower casing 210 and the cover 230 is coupled to the lower side of the lower casing so that the PCB substrate 220 is sealed,
A MOSFET device (switching device) 221 is formed on the PCB substrate 220, and a capacitor 222 protrudes outward from the PCB substrate 220 so that the capacitor 222 is formed on the outer periphery of the PCB substrate 220. The capacitor 222 is disposed so as not to overlap the PCB substrate 220 between the lower casing 210 and the cover 230 in the thickness direction.
The PCB substrate 220 is provided at one side of the accommodating portion 211 of the lower casing 210, so that the PCB substrate 220 is located at one side in the radial direction of the BLDC motor unit 100 in the bearing 130. Spaced apart)
The capacitor 222 is disposed at a position spaced apart from the bearing 130 in the radial direction, the capacitor 222 in the first direction around the first direction of the PCB substrate 220 facing the bearing 130 Protruded toward the surface of the capacitor 222 is disposed spaced apart from the bearing 130 in a second radial direction perpendicular to the first direction,
In the accommodating part 211 of the lower casing 210, a concave recess 212 is formed concave to increase the contact area with the capacitor 222, and the capacitor 222 is disposed in the settle groove 212. Inverter-integrated BLDC motor, characterized in that the close contact.
delete delete The method of claim 1,
The lower casing 210 is formed to protrude radially one side of the BLDC motor unit 100 so that a heat dissipation fin 213 is formed outside the protruding portion of the lower casing 210, and the lower casing 210 protrudes. Inverter-integrated BLDC motor, characterized in that the PCB substrate 220 is disposed in the receiving portion 211 of the portion.
The method of claim 4, wherein
The heat dissipation fin 213 is an inverter integrated BLDC motor, characterized in that formed on the outer upper surface of the lower casing (210).
KR1020130160583A 2013-12-20 2013-12-20 Inverter built-in brushless direct current motor KR102018050B1 (en)

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Application Number Priority Date Filing Date Title
KR1020130160583A KR102018050B1 (en) 2013-12-20 2013-12-20 Inverter built-in brushless direct current motor

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Application Number Priority Date Filing Date Title
KR1020130160583A KR102018050B1 (en) 2013-12-20 2013-12-20 Inverter built-in brushless direct current motor

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KR20150072912A KR20150072912A (en) 2015-06-30
KR102018050B1 true KR102018050B1 (en) 2019-09-04

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102190928B1 (en) 2015-09-03 2020-12-15 한온시스템 주식회사 Drive unit and cooling apparatus comprising the same
KR102325134B1 (en) * 2017-06-30 2021-11-11 한온시스템 주식회사 Inverter built-in brushless direct current motor
KR102368143B1 (en) * 2017-07-17 2022-03-02 한온시스템 주식회사 Inverter built-in brushless direct current motor
WO2019004572A1 (en) * 2017-06-30 2019-01-03 한온시스템 주식회사 Bldc motor integrated with inverter
KR102423650B1 (en) 2017-09-05 2022-07-21 한온시스템 주식회사 Motor
KR102463491B1 (en) * 2017-09-20 2022-11-08 한온시스템 주식회사 Motor
KR102481104B1 (en) * 2018-01-31 2022-12-27 한온시스템 주식회사 Inductor housing and motor assembly including thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000092847A (en) * 1998-09-14 2000-03-31 Denso Corp Semiconductor module apparatus with capacitor
JP2002112504A (en) * 2000-09-27 2002-04-12 Zexel Valeo Climate Control Corp Brushless motor
JP3787303B2 (en) * 2000-12-20 2006-06-21 ティーアールダブリュー・オートモーティブ・エレクトロニクス・アンド・コンポーネンツ・ゲーエムベーハー・ウント・コンパニー・コマンディートゲゼルシャフト Drive device for a vehicle fan
JP2013046571A (en) * 2011-08-26 2013-03-04 Johnson Electric Sa Brushless motor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100253231B1 (en) 1997-12-24 2000-04-15 구자홍 Inverter having cooling apparatus
GB2464622B (en) * 2008-09-18 2010-10-20 Controlled Power Technologies A power terminal in an intergrated starter generator
KR101432622B1 (en) * 2012-03-14 2014-08-22 한라비스테온공조 주식회사 Fan Motor for Vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000092847A (en) * 1998-09-14 2000-03-31 Denso Corp Semiconductor module apparatus with capacitor
JP2002112504A (en) * 2000-09-27 2002-04-12 Zexel Valeo Climate Control Corp Brushless motor
JP3787303B2 (en) * 2000-12-20 2006-06-21 ティーアールダブリュー・オートモーティブ・エレクトロニクス・アンド・コンポーネンツ・ゲーエムベーハー・ウント・コンパニー・コマンディートゲゼルシャフト Drive device for a vehicle fan
JP2013046571A (en) * 2011-08-26 2013-03-04 Johnson Electric Sa Brushless motor

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