KR20140075924A - Electrically Driven Oil Pump - Google Patents

Electrically Driven Oil Pump

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Publication number
KR20140075924A
KR20140075924A KR1020120143428A KR20120143428A KR20140075924A KR 20140075924 A KR20140075924 A KR 20140075924A KR 1020120143428 A KR1020120143428 A KR 1020120143428A KR 20120143428 A KR20120143428 A KR 20120143428A KR 20140075924 A KR20140075924 A KR 20140075924A
Authority
KR
South Korea
Prior art keywords
pump
motor
oil
housing
impeller
Prior art date
Application number
KR1020120143428A
Other languages
Korean (ko)
Inventor
장우교
김정철
박용복
이광호
박장수
Original Assignee
계양전기 주식회사
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 계양전기 주식회사 filed Critical 계양전기 주식회사
Priority to KR1020120143428A priority Critical patent/KR20140075924A/en
Publication of KR20140075924A publication Critical patent/KR20140075924A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4165—Control of cooling or lubricating

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

Abstract

The present invention relates to a motor-driven oil pump capable of cooling a motor of an oil pump through oil without a separate cooling means.
The pump includes a motor and a pump for discharging the oil introduced into the pump. The motor includes a motor housing, an inner portion of the motor housing and an inner portion of the pump, An electric oil pump having a shaft on which an impeller is formed at a portion located inside a pump housing,
An oil passage extending from the housing of the motor to the pump housing of the pump and extending to the motor housing,
The oil passage
An oil inlet is formed at one side of the motor housing of the motor and a pump flow path passing through the motor housing of the motor and passing through the pump housing of the pump and passing through the impeller is formed. So that the oil discharge port is formed.

Description

[0001] Electrically Driven Oil Pump [0002]

The present invention relates to an electric oil pump, and more particularly to an electric oil pump capable of cooling a motor of an oil pump through oil without a separate cooling means.

Generally, among the powertrain of a hybrid vehicle, a transmission, which substantially maintains the transmission mechanism of a conventional automatic transmission, is connected to a motor and an engine, and a power from an engine is transmitted to a transmission .

In the power train, an electric oil pump is separately provided in addition to the mechanical oil pump provided in the transmission. This is to supplement this because the hybrid vehicle is oscillating or traveling in the electric vehicle mode and it is difficult to provide sufficient hydraulic pressure required by the transmission in time only with the discharge oil pressure of the mechanical oil pump driven by the motor .

1 is a cross-sectional view of a conventional electric oil pump. As shown in the figure, the electric oil pump 1 has a structure including a motor 10 and a pump 20 mounted in front of the motor 10 .

The shaft 11 located at the center of the motor 10 extends to the inside of the pump 20 and the impeller 21 is mounted on the shaft 11 located inside the pump 20.

The pump housing 22 of the pump 20 has a structure in which an oil passage 23 in which an oil inlet 23a and an oil outlet 23b are formed is formed.

The impeller (21) is disposed at a central position of the oil passage (23).

Therefore, when the motor 10 is driven, the oil flows from the oil inlet 23a of the oil passage 23 by the rotation of the impeller 21 in the pump 20, and is discharged through the oil discharge port 23b.

However, when the motor 10 and the pump 20 are operated as described above, heat is generated in the motor 10, and the performance of the motor 10 may be deteriorated by the generated heat.

Therefore, in order to cool the motor 10, a separate cooling fan is conventionally installed around the motor 10. However, such a cooling fan does not have a great effect for cooling the motor 10, It is difficult to design the vehicle.

Korean Registered Patent No. 10-1134734 (Published on April 13, 2012)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a method of cooling a motor using oil flowing through a pump To provide an electric oil pump.

The above object of the present invention can be attained by providing a motor comprising a motor and a pump provided in front of the motor for discharging oil introduced thereinto,

Wherein the motor is a motor-driven oil pump having a motor housing, a shaft extending from the inside of the motor housing and the inside of the pump and having an impeller formed in a portion of the pump housing inside the pump housing,

 An oil passage extending from the housing of the motor to the pump housing of the pump and extending to the motor housing,

The oil passage includes an oil inlet formed at one side of the motor housing of the motor, a pump passage passing through the motor housing of the motor and passing through the impeller coupled to the shaft while crossing the inside of the pump housing of the pump is formed, And extends from one side to the other side of the motor housing to form an oil discharge port.

As described above, according to the present invention, the oil is passed through the oil passage without taking a separate cooling means, so that the cooling efficiency of the motor can be increased, the performance of the motor can be improved correspondingly, The structure is simplified and space utilization is easy.

1 is a sectional view showing a conventional electric oil pump.
2 is a cross-sectional view illustrating an electric oil pump according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a cross-sectional view illustrating an electric oil pump according to an embodiment of the present invention.

As shown in the drawing, an electric oil pump 100 according to an embodiment of the present invention includes a motor 110, a pump 120 for discharging oil introduced in front of the motor 110 .

A shaft 112 extends to the inside of the pump 120 in the motor housing 111 of the motor 110.

The electric oil pump 100 according to the embodiment of the present invention is formed from the housing 111 of the motor 110 and extends across the pump housing 121 of the pump 120 to the motor housing 111 The oil passage 130 is formed.

An impeller 122 is formed on the shaft 112 of the motor 110 located inside the pump housing 121 of the pump 120.

An oil inlet 131 is formed at one side of the motor housing 111 of the motor 110 and is connected to the pump 110 through the motor housing 111 of the motor 110. [ A pump passage 132 passing through the impeller 122 coupled to the shaft 112 is formed while traversing the inside of the pump housing 121 of the motor housing 120. Then, And the oil discharge port 133 is formed to extend to the other side.

When the motor 110 is driven, the impeller 122 provided in the pump 120 rotates due to the operation of the shaft 111. In the electric oil pump 100 according to the embodiment of the present invention, The oil flows through the oil inlet 131 formed at one side of the motor housing 111 and is guided to the pump passage 132 in the pump housing 121 of the pump 120 and then to the pump housing 121 And then discharged through the oil discharge port 133 formed on the other side of the motor housing 111 again.

Therefore, the heat generated by the operation of the motor 110 is transmitted to and absorbed by the circulating and flowing oil, so that the motor 110 can be cooled.

Since the motor 110 is cooled according to the circulation of the oil, the performance of the motor 110 can be improved and the structure is simplified since there is no need to provide a separate cooling means (for example, a cooling fan) It is easy to mount on a vehicle.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents. It will be possible. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1: Electric oil pump
10: Motor
11: Axis
20: Pump
21: Impeller
22: Pump housing
23: Oil channel
23a: Oil inlet
23b; Oil outlet
100: Electric oil pump
110: motor
111: Motor housing
112: Axis
120: pump
121: Pump housing
122: Impeller
130: Oil channel
131: Oil inlet
132:
133: Oil outlet

Claims (1)

A motor, and a pump provided in front of the motor for discharging the oil introduced thereinto,
Wherein the motor is a motor-driven oil pump having a motor housing, a shaft extending from the inside of the motor housing and the inside of the pump and having an impeller formed in a portion of the pump housing inside the pump housing,
An oil passage extending from the housing of the motor to the pump housing of the pump and extending to the motor housing,
The oil passage
An oil inlet is formed at one side of the motor housing of the motor and a pump flow path passing through the motor housing of the motor and passing through the pump housing of the pump and passing through the impeller is formed. And an oil discharge port is formed to extend to the other side.
KR1020120143428A 2012-12-11 2012-12-11 Electrically Driven Oil Pump KR20140075924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120143428A KR20140075924A (en) 2012-12-11 2012-12-11 Electrically Driven Oil Pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120143428A KR20140075924A (en) 2012-12-11 2012-12-11 Electrically Driven Oil Pump

Publications (1)

Publication Number Publication Date
KR20140075924A true KR20140075924A (en) 2014-06-20

Family

ID=51128369

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120143428A KR20140075924A (en) 2012-12-11 2012-12-11 Electrically Driven Oil Pump

Country Status (1)

Country Link
KR (1) KR20140075924A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190049087A (en) * 2017-11-01 2019-05-09 현대자동차주식회사 Motor cooling system of electric oil pump
KR20190097425A (en) 2018-02-12 2019-08-21 현대자동차주식회사 Control method of electric oil pump for vehicle
KR20190121450A (en) * 2018-04-18 2019-10-28 현대자동차주식회사 Electric oil pump system integrated with heat exchanger
KR20220102369A (en) 2021-01-13 2022-07-20 지엠비코리아 주식회사 Electronic Oil Pump
KR20230153556A (en) 2022-04-28 2023-11-07 엘지이노텍 주식회사 Electric oil pump
KR20240018986A (en) 2022-08-03 2024-02-14 엘지이노텍 주식회사 Motor and Electric oil pump having the same
KR20240022926A (en) 2022-08-12 2024-02-20 엘지이노텍 주식회사 Electric oil pump
KR102646813B1 (en) * 2023-10-06 2024-03-14 지엠비코리아 주식회사 Hydraulic Supply Device with Motor Cooling Function

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190049087A (en) * 2017-11-01 2019-05-09 현대자동차주식회사 Motor cooling system of electric oil pump
KR20190097425A (en) 2018-02-12 2019-08-21 현대자동차주식회사 Control method of electric oil pump for vehicle
KR20190121450A (en) * 2018-04-18 2019-10-28 현대자동차주식회사 Electric oil pump system integrated with heat exchanger
KR20220102369A (en) 2021-01-13 2022-07-20 지엠비코리아 주식회사 Electronic Oil Pump
KR20230153556A (en) 2022-04-28 2023-11-07 엘지이노텍 주식회사 Electric oil pump
KR20240018986A (en) 2022-08-03 2024-02-14 엘지이노텍 주식회사 Motor and Electric oil pump having the same
KR20240022926A (en) 2022-08-12 2024-02-20 엘지이노텍 주식회사 Electric oil pump
KR102646813B1 (en) * 2023-10-06 2024-03-14 지엠비코리아 주식회사 Hydraulic Supply Device with Motor Cooling Function

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Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application