CN103607073A - Efficient cooling motor with three independent wind-path structures - Google Patents
Efficient cooling motor with three independent wind-path structures Download PDFInfo
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- CN103607073A CN103607073A CN201310622372.3A CN201310622372A CN103607073A CN 103607073 A CN103607073 A CN 103607073A CN 201310622372 A CN201310622372 A CN 201310622372A CN 103607073 A CN103607073 A CN 103607073A
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- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The invention relates to a motor, in particular to an efficient cooling motor with three independent wind-path structures. The problems that an existing electric vehicle traction motor is poor in cooling capability, low in output power, small in output torque, weak in overload capacity, large in size, high in weight and high in cost are solved. The efficient cooling motor with the three independent wind-path structures comprises a base, a front end cover, a rear end cover, a stator assembly and a rotor assembly. The stator assembly comprises a stator iron core and a stator winding. The rotor assembly comprises a rotary shaft and a rotor iron core. An outer-layer axial air gap is reserved between the surface of the inner circle of the base and the surface of the outer circle of the stator iron core, and an inner-layer axial air gap is reserved between the surface of the inner circle of the stator iron core and the surface of the outer circle of the rotor iron core. An axial air duct is formed in the end face of the rotor iron core in a penetrating through mode, a centrifugal fan is installed in an inner cavity in the front portion of the base, an air channel is installed on the surface of the outer circle of the rear portion of the base, and an axial flow fan is installed in an inner cavity of the air channel. The efficient cooling motor with the three independent wind-path structures is suitable for electric vehicles.
Description
Technical field
The present invention relates to motor, specifically a kind of independence three wind path structure motors of high efficiency cooling heat radiation.
Background technology
The core of motor vehicle is power-driven system, and its power-driven system comprises controller and traction electric machine.The particularity of motor vehicle at aspects such as operational mode, running environment, technical performances requires its traction electric machine to have the features such as power output is high, output torque is large, overload capacity is strong, moment of inertia is little, cooling capacity is strong, volume is little, lightweight, cost is low.Current, the traction electric machine that is applied to motor vehicle mainly comprises self-ventilated machine and water-cooled machine.Wherein, self-ventilated machine can directly distribute motor internal heat by its inner centrifugal fan, but self-ventilated machine is subject to the capabilities limits (air quantity of centrifugal fan is little) of its inner centrifugal fan, the problem that ubiquity cooling capacity is weak, power output is low, output torque is little, overload capacity is weak.Therefore, self-ventilated machine is difficult to meet well the application requirements of motor vehicle.Compare with self-ventilated machine, water-cooled machine can be taken away motor surface heat by cooling water circulation, its cooling capacity is stronger, but water-cooled machine is when being applied to motor vehicle, need on vehicle, be equipped with the various devices such as water tank, water pump, auxiliary circulating equipment, cause that its ubiquity volume is large, Heavy Weight, problem that cost is high.Therefore, water-cooled machine is difficult to meet well the application requirements of motor vehicle equally.Based on this, be necessary to invent and a kind ofly can meet the brand-new motor that electric vehicle applications requires, with a little less than solving existing motor vehicle traction electric machine cooling capacity, power output is low, output torque is little, a little less than overload capacity, large, the Heavy Weight of volume, problem that cost is high.
Summary of the invention
The present invention for a little less than solving existing motor vehicle traction electric machine cooling capacity, power output is low, output torque is little, a little less than overload capacity, large, the Heavy Weight of volume, problem that cost is high, a kind of independence three wind path structure motors of high efficiency cooling heat radiation are provided.
The present invention adopts following technical scheme to realize: the independence three wind path structure motors of high efficiency cooling heat radiation, comprise support, front end housing, rear end cap, stator assembling, rotor assembling; Stator assembling comprises stator core, stator winding; Rotor assembling comprises rotating shaft, rotor core; Front end housing is fixedly installed in the front end face of support; Rear end cap is fixedly installed in the rear end face of support; Stator winding is wound in stator core; Rotor core is fixedly installed in the middle part of rotating shaft; The internal circular surfaces of support is fixed with axial ribs, and the internal circular surfaces of support is fixed by the outer round surface of axial ribs and stator core; Between the internal circular surfaces of support and the outer round surface of stator core, leave outer axial air-gap; Between the internal circular surfaces of stator core and the outer round surface of rotor core, leave internal layer axial air-gap; The end face of rotor core connects and offers axial ducts; The anterior inner chamber of support is provided with centrifugal fan, and centrifugal fan is fixedly installed in the front portion of rotating shaft; The anterior face of support connects and offers stator radially exhaust vent and rotor radial exhaust vent, and stator radially exhaust vent be positioned at the rear side of rotor radial exhaust vent; The rear portion outer round surface of support is provided with air duct; The front end of air duct is provided with uncovered, and the anterior internal circular surfaces of air duct and the rear portion outer round surface of support are fixed by socket; The rear end of air duct is provided with end wall, and the perforation of the end wall of air duct central authorities offers axial installation through hole; The inner chamber of air duct is provided with axial flow blower, and the supporting of the casing of axial flow blower is fixed in axial installation through hole; The end face outer ring perforation of rear end cap offers stator shaft orientation and crosses wind hole; The end face inner ring perforation of rear end cap offers rotor axial and crosses wind hole; The outer front end of axial air-gap, the front end of internal layer axial air-gap all the anterior inner chamber by support and stator radially exhaust vent be communicated with; The outer rear end of axial air-gap is, wind hole is all crossed by stator shaft orientation in the rear end of internal layer axial air-gap is communicated with the inner chamber of air duct; Outer axial air-gap, stator radially exhaust vent, stator shaft orientation are crossed wind hole common formation the first stator wind path structure; Internal layer axial air-gap, stator radially exhaust vent, stator shaft orientation are crossed wind hole common formation the second stator wind path structure; The front end of axial ducts is communicated with rotor radial exhaust vent by the anterior inner chamber of support; The rear end of axial ducts is crossed wind hole by rotor axial and is communicated with the inner chamber of air duct; Axial ducts, rotor radial exhaust vent, rotor axial are crossed wind hole and are jointly formed rotor wind path structure; The first stator wind path structure, the second stator wind path structure, three separate and non-interference wind path structures of the common formation of rotor wind path structure.
During work, axial flow blower is powered by independent current source.Centrifugal fan is driven and is carried out work by rotating shaft.Specific works process is as follows: start axial flow blower, axial flow blower blows out forward cooling air, this cooling air is divided into three tunnels: the first via cooling air stator shaft orientation of flowing through is successively crossed the anterior inner chamber that wind hole, outer axial air-gap enter support, then through stator radially exhaust vent discharge.In the process of outer axial air-gap of flowing through, first via cooling air and stator core and stator winding carry out heat exchange, thus the heat of stator core and stator winding generation are taken away, and realization is cooling to stator core and stator winding.The second road cooling air stator shaft orientation of flowing through is successively crossed the anterior inner chamber that wind hole, internal layer axial air-gap enter support, then through stator radially exhaust vent discharge.In the process of internal layer axial air-gap of flowing through, the second road cooling air and stator core and stator winding carry out heat exchange, thus the heat of stator core and stator winding generation are taken away, and realization is cooling to stator core and stator winding.The Third Road cooling air rotor axial of flowing through is successively crossed the anterior inner chamber that wind hole, axial ducts enter support, then through rotor radial exhaust vent, discharges.In the process of axial ducts of flowing through, heat exchange is carried out in Third Road cooling air and rotor core, and the heat thus rotor core being produced is taken away, and realization is cooling to rotor core.Meanwhile, centrifugal fan is rotated under the drive of rotating shaft.Under the turning effort of centrifugal fan, enter the anterior inner chamber San of support road cooling air and accelerate, from radially exhaust vent and the discharge of rotor radial exhaust vent of stator, effectively to have improved thus rate of heat exchange, thereby effectively strengthened cooling effect.Based on said process, compare with existing motor vehicle traction electric machine, the independence three wind path structure motor tools of high efficiency cooling heat radiation of the present invention have the following advantages: one, compare with self-ventilated machine, the independence three wind path structure motors of high efficiency cooling of the present invention heat radiation are on the one hand by adopting three separate and non-interference wind path structures (i.e. the first stator wind path structure, the second stator wind path structure, rotor wind path structure), realized stator core, stator winding, rotor core cooling fast, on the other hand centrifugal fan is combined with axial flow blower, by utilizing feature and the large feature of axial flow blower air quantity that centrifugal fan blast is large, enough large cooling air quantity and cooling wind pressure have been produced, cooling capacity and overload capacity have effectively been strengthened thus, effectively improved power output, effectively increased output torque.They are two years old, compare with water-cooled machine, the independence three wind path structure motors of high efficiency cooling heat radiation of the present invention are when being applied to motor vehicle, without being equipped with the various devices such as water tank, water pump, auxiliary circulating equipment, can realize cooling fast to stator core, stator winding, rotor core, effectively reduce thus volume, effectively alleviated weight, effectively reduced cost.In sum, the cooling structure of independence three wind path structure motors based on brand-new design of high efficiency cooling heat radiation of the present invention, efficiently solve that existing motor vehicle traction electric machine cooling capacity is weak, power output is low, output torque is little, overload capacity is weak, volume is large, Heavy Weight, problem that cost is high, so application requirements that it completely can motor vehicle.
The present invention is based on the cooling structure of brand-new design, efficiently solve that existing motor vehicle traction electric machine cooling capacity is weak, power output is low, output torque is little, overload capacity is weak, volume is large, Heavy Weight, problem that cost is high, be applicable to motor vehicle.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of outer axial air-gap of the present invention.
In figure: 1-support, 2-front end housing, 3-rear end cap, 4-stator core, 5-stator winding, 6-rotating shaft, 7-rotor core, 8-axial ribs, the outer axial air-gap of 9-, 10-internal layer axial air-gap, 11-axial ducts, 12-centrifugal fan, 13-stator is exhaust vent radially, 14-rotor radial exhaust vent, 15-air duct, 16-axially installs through hole, 17-axial flow blower, 18-stator shaft orientation is crossed wind hole, and 19-rotor axial is crossed wind hole.
Embodiment
The independence three wind path structure motors of high efficiency cooling heat radiation, comprise support 1, front end housing 2, rear end cap 3, stator assembling, rotor assembling; Stator assembling comprises stator core 4, stator winding 5; Rotor assembling comprises rotating shaft 6, rotor core 7; Front end housing 2 is fixedly installed in the front end face of support 1; Rear end cap 3 is fixedly installed in the rear end face of support 1; Stator winding 5 is wound in stator core 4; Rotor core 7 is fixedly installed in the middle part of rotating shaft 6;
The internal circular surfaces of support 1 is fixed with axial ribs 8, and the internal circular surfaces of support 1 is fixed by axial ribs 8 and the outer round surface of stator core 4; Between the outer round surface of the internal circular surfaces of support 1 and stator core 4, leave outer axial air-gap 9; Between the outer round surface of the internal circular surfaces of stator core 4 and rotor core 7, leave internal layer axial air-gap 10; The end face of rotor core 7 connects and offers axial ducts 11; The anterior inner chamber of support 1 is provided with centrifugal fan 12, and centrifugal fan 12 is fixedly installed in the front portion of rotating shaft 6; The anterior face of support 1 connects and offers stator radially exhaust vent 13 and rotor radial exhaust vent 14, and stator radially exhaust vent 13 be positioned at the rear side of rotor radial exhaust vent 14; The rear portion outer round surface of support 1 is provided with air duct 15; The front end of air duct 15 is provided with uncovered, and the anterior internal circular surfaces of air duct 15 and the rear portion outer round surface of support 1 are fixed by socket; The rear end of air duct 15 is provided with end wall, and the perforation of the end wall of air duct 15 central authorities offers axial installation through hole 16; The inner chamber of air duct 15 is provided with axial flow blower 17, and the supporting of the casing of axial flow blower 17 is fixed in axial installation through hole 16; The end face outer ring perforation of rear end cap 3 offers stator shaft orientation and crosses wind hole 18; The end face inner ring perforation of rear end cap 3 offers rotor axial and crosses wind hole 19; The outer front end of axial air-gap 9, the front end of internal layer axial air-gap 10 all the anterior inner chamber by support 1 and stator radially exhaust vent 13 be communicated with; The outer rear end of axial air-gap 9 is, wind hole 18 is all crossed by stator shaft orientation in the rear end of internal layer axial air-gap 10 is communicated with the inner chamber of air duct 15; Outer axial air-gap 9, stator radially exhaust vent 13, stator shaft orientation are crossed wind hole 18 common formation the first stator wind path structures; Internal layer axial air-gap 10, stator radially exhaust vent 13, stator shaft orientation are crossed wind hole 18 common formation the second stator wind path structures; The front end of axial ducts 11 is communicated with rotor radial exhaust vent 14 by the anterior inner chamber of support 1; The rear end of axial ducts 11 is crossed wind hole 19 by rotor axial and is communicated with the inner chamber of air duct 15; Axial ducts 11, rotor radial exhaust vent 14, rotor axial are crossed wind hole 19 common formation rotor wind path structure; The first stator wind path structure, the second stator wind path structure, three separate and non-interference wind path structures of the common formation of rotor wind path structure.
During concrete enforcement, the number of described axial ribs 8 is several, and each axial ribs 8 is along circumferentially equidistantly arranging; The number of described axial ducts 11 is several, and each axial ducts 11 are along circumferentially equidistant arrangement; The described stator radially number of exhaust vent 13 is several, and the radially circumferentially equidistant arrangement of exhaust vent 13 edges of each stator; The number of described rotor radial exhaust vent 14 is several, and each rotor radial exhaust vent 14 is along circumferentially equidistant arrangement; The number that described stator shaft orientation is crossed wind hole 18 is several, and each stator shaft orientation is crossed wind hole 18 along circumferentially equidistant arrangement; The number that described rotor axial is crossed wind hole 19 is several, and each rotor axial is crossed wind hole 19 along circumferentially equidistant arrangement.
Claims (2)
1. independence three wind path structure motors for high efficiency cooling heat radiation, comprise support (1), front end housing (2), rear end cap (3), stator assembling, rotor assembling; Stator assembling comprises stator core (4), stator winding (5); Rotor assembling comprises rotating shaft (6), rotor core (7); Front end housing (2) is fixedly installed in the front end face of support (1); Rear end cap (3) is fixedly installed in the rear end face of support (1); Stator winding (5) is wound in stator core (4); Rotor core (7) is fixedly installed in the middle part of rotating shaft (6);
It is characterized in that: the internal circular surfaces of support (1) is fixed with axial ribs (8), and the internal circular surfaces of support (1) is fixed by axial ribs (8) and the outer round surface of stator core (4); Between the outer round surface of the internal circular surfaces of support (1) and stator core (4), leave outer axial air-gap (9); Between the outer round surface of the internal circular surfaces of stator core (4) and rotor core (7), leave internal layer axial air-gap (10); The end face of rotor core (7) connects and offers axial ducts (11); The anterior inner chamber of support (1) is provided with centrifugal fan (12), and centrifugal fan (12) is fixedly installed in the front portion of rotating shaft (6); The anterior face of support (1) connects and offers stator radially exhaust vent (13) and rotor radial exhaust vent (14), and stator radially exhaust vent (13) be positioned at the rear side of rotor radial exhaust vent (14); The rear portion outer round surface of support (1) is provided with air duct (15); The front end of air duct (15) is provided with uncovered, and the rear portion outer round surface of the anterior internal circular surfaces of air duct (15) and support (1) is fixed by socket; The rear end of air duct (15) is provided with end wall, and the perforation of the end wall of air duct (15) central authorities offers axial installation through hole (16); The inner chamber of air duct (15) is provided with axial flow blower (17), and the supporting of the casing of axial flow blower (17) is fixed in axial installation through hole (16); The end face outer ring perforation of rear end cap (3) offers stator shaft orientation and crosses wind hole (18); The end face inner ring perforation of rear end cap (3) offers rotor axial and crosses wind hole (19); The front end of outer axial air-gap (9), the front end of internal layer axial air-gap (10) all the anterior inner chamber by support (1) and stator radially exhaust vent (13) be communicated with; The rear end of outer axial air-gap (9), the rear end of internal layer axial air-gap (10) are all crossed wind hole (18) by stator shaft orientation and are communicated with the inner chamber of air duct (15); Outer axial air-gap (9), stator radially exhaust vent (13), stator shaft orientation are crossed wind hole (18) and are jointly formed the first stator wind path structure; Internal layer axial air-gap (10), stator radially exhaust vent (13), stator shaft orientation are crossed wind hole (18) and are jointly formed the second stator wind path structure; The front end of axial ducts (11) is communicated with rotor radial exhaust vent (14) by the anterior inner chamber of support (1); The rear end of axial ducts (11) is crossed wind hole (19) by rotor axial and is communicated with the inner chamber of air duct (15); Axial ducts (11), rotor radial exhaust vent (14), rotor axial are crossed wind hole (19) and are jointly formed rotor wind path structure; The first stator wind path structure, the second stator wind path structure, three separate and non-interference wind path structures of the common formation of rotor wind path structure.
2. the independence three wind path structure motors of high efficiency cooling heat radiation according to claim 1, it is characterized in that: the number of described axial ribs (8) is several, and each axial ribs (8) are along circumferentially equidistantly arranging; The number of described axial ducts (11) is several, and each axial ducts (11) are along circumferentially equidistant arrangement; The described stator radially number of exhaust vent (13) is several, and the radially circumferentially equidistant arrangement of exhaust vent (13) edge of each stator; The number of described rotor radial exhaust vent (14) is several, and each rotor radial exhaust vent (14) is along circumferentially equidistant arrangement; The number that described stator shaft orientation is crossed wind hole (18) is several, and each stator shaft orientation is crossed wind hole (18) along circumferentially equidistant arrangement; The number that described rotor axial is crossed wind hole (19) is several, and each rotor axial is crossed wind hole (19) along circumferentially equidistant arrangement.
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| CN201310622372.3A CN103607073B (en) | 2013-11-30 | 2013-11-30 | The independent three wind path structure motors of high efficiency cooling heat radiation |
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| CN201310622372.3A CN103607073B (en) | 2013-11-30 | 2013-11-30 | The independent three wind path structure motors of high efficiency cooling heat radiation |
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| CN103607073A true CN103607073A (en) | 2014-02-26 |
| CN103607073B CN103607073B (en) | 2015-11-04 |
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|---|---|---|---|---|
| CN104242502A (en) * | 2014-10-13 | 2014-12-24 | 山东齐鲁电机制造有限公司 | Ventilation cooling structure in motor stator iron core and cooling method |
| CN104505986A (en) * | 2014-11-25 | 2015-04-08 | 徐东旭 | High-efficiency energy-saving electric motor with internal shielding ventilation opening |
| CN104810983A (en) * | 2015-05-19 | 2015-07-29 | 永济新时速电机电器有限责任公司 | High-power traction motor of high speed motor train unit |
| CN105041607A (en) * | 2015-08-17 | 2015-11-11 | 奉化市必达机械制造有限公司 | Air cooling air compressor |
| CN105186785A (en) * | 2015-10-13 | 2015-12-23 | 江苏杰特动力科技有限公司 | Variable-frequency generator set motor with cooling air ducts |
| CN105553181A (en) * | 2015-12-19 | 2016-05-04 | 江西泰豪军工集团有限公司 | Non-impact outlet angle air-outlet structure on front end cover of electric generator |
| CN106100238A (en) * | 2016-08-12 | 2016-11-09 | 中车永济电机有限公司 | The efficiently self-ventilated machine of cooling heat radiation |
| CN106487125A (en) * | 2016-11-25 | 2017-03-08 | 中车永济电机有限公司 | Locomotive direct-drive permanent-magnetism traction motor |
| CN107237684A (en) * | 2016-03-28 | 2017-10-10 | 长城汽车股份有限公司 | Supercharger assembly and the gas handling system with it |
| CN107237685A (en) * | 2016-03-28 | 2017-10-10 | 长城汽车股份有限公司 | Supercharger assembly and the gas handling system with it |
| CN107834751A (en) * | 2017-11-28 | 2018-03-23 | 威海众泰电机有限公司 | A kind of high-speed electric expreess locomotive |
| CN108155737A (en) * | 2018-02-07 | 2018-06-12 | 河南宝天机电科技有限公司 | A kind of motor of Low gullet torque |
| CN108155757A (en) * | 2018-02-07 | 2018-06-12 | 河南宝天机电科技有限公司 | A kind of ventilated type motor |
| CN108233626A (en) * | 2018-01-09 | 2018-06-29 | 河海大学 | Cooling-fan installation inside a kind of large synchronous compensator |
| CN108390508A (en) * | 2018-02-05 | 2018-08-10 | 深圳市贝优通新能源技术开发有限公司 | A kind of New energy automobile motor of the high efficiency and heat radiation with water-proof function |
| CN110474458A (en) * | 2019-09-24 | 2019-11-19 | 上海电气集团上海电机厂有限公司 | A kind of rotor punching wind path structure |
| CN111049321A (en) * | 2020-01-06 | 2020-04-21 | 苏州永捷电机有限公司 | Electric machine with double-fan cooling system |
| CN112260485A (en) * | 2020-11-30 | 2021-01-22 | 卧龙电气南阳防爆集团股份有限公司 | Double-pumping interactive high-power-density motor |
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| CN104242502A (en) * | 2014-10-13 | 2014-12-24 | 山东齐鲁电机制造有限公司 | Ventilation cooling structure in motor stator iron core and cooling method |
| CN104505986A (en) * | 2014-11-25 | 2015-04-08 | 徐东旭 | High-efficiency energy-saving electric motor with internal shielding ventilation opening |
| CN104810983A (en) * | 2015-05-19 | 2015-07-29 | 永济新时速电机电器有限责任公司 | High-power traction motor of high speed motor train unit |
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| CN105186785A (en) * | 2015-10-13 | 2015-12-23 | 江苏杰特动力科技有限公司 | Variable-frequency generator set motor with cooling air ducts |
| CN105186785B (en) * | 2015-10-13 | 2019-06-11 | 江苏杰特动力科技有限公司 | A kind of variable-frequency power generation unit motor with cooling air channel |
| CN105553181A (en) * | 2015-12-19 | 2016-05-04 | 江西泰豪军工集团有限公司 | Non-impact outlet angle air-outlet structure on front end cover of electric generator |
| CN107237684A (en) * | 2016-03-28 | 2017-10-10 | 长城汽车股份有限公司 | Supercharger assembly and the gas handling system with it |
| CN107237685A (en) * | 2016-03-28 | 2017-10-10 | 长城汽车股份有限公司 | Supercharger assembly and the gas handling system with it |
| CN106100238A (en) * | 2016-08-12 | 2016-11-09 | 中车永济电机有限公司 | The efficiently self-ventilated machine of cooling heat radiation |
| CN106487125A (en) * | 2016-11-25 | 2017-03-08 | 中车永济电机有限公司 | Locomotive direct-drive permanent-magnetism traction motor |
| CN107834751A (en) * | 2017-11-28 | 2018-03-23 | 威海众泰电机有限公司 | A kind of high-speed electric expreess locomotive |
| CN108233626B (en) * | 2018-01-09 | 2020-01-17 | 河海大学 | Internal cooling and ventilating system of large synchronous phase modulator |
| CN108233626A (en) * | 2018-01-09 | 2018-06-29 | 河海大学 | Cooling-fan installation inside a kind of large synchronous compensator |
| CN108390508A (en) * | 2018-02-05 | 2018-08-10 | 深圳市贝优通新能源技术开发有限公司 | A kind of New energy automobile motor of the high efficiency and heat radiation with water-proof function |
| CN108390508B (en) * | 2018-02-05 | 2019-11-15 | 浙江台州美多模具有限公司 | A kind of New energy automobile motor of the high efficiency and heat radiation with water-proof function |
| CN108155757A (en) * | 2018-02-07 | 2018-06-12 | 河南宝天机电科技有限公司 | A kind of ventilated type motor |
| CN108155737A (en) * | 2018-02-07 | 2018-06-12 | 河南宝天机电科技有限公司 | A kind of motor of Low gullet torque |
| CN110474458A (en) * | 2019-09-24 | 2019-11-19 | 上海电气集团上海电机厂有限公司 | A kind of rotor punching wind path structure |
| CN110474458B (en) * | 2019-09-24 | 2024-05-14 | 上海电气集团上海电机厂有限公司 | Rotor punching sheet air path structure |
| CN111049321A (en) * | 2020-01-06 | 2020-04-21 | 苏州永捷电机有限公司 | Electric machine with double-fan cooling system |
| CN112260485A (en) * | 2020-11-30 | 2021-01-22 | 卧龙电气南阳防爆集团股份有限公司 | Double-pumping interactive high-power-density motor |
| CN112260485B (en) * | 2020-11-30 | 2024-05-10 | 卧龙电气南阳防爆集团股份有限公司 | Double-pumping interactive high-power density motor |
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| CN103607073B (en) | 2015-11-04 |
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Address after: 044500 Yongji City, Shanxi Province, the city of motor street, No. 18, No. Patentee after: CRRC YONGJI ELECTRIC CO., LTD. Address before: 044500 Yongji City, Shanxi Province, the city of motor street, No. 18, No. Patentee before: Yongji Xinshisu Motor Electrical Appliance Co., Ltd. |
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