CN104167892A - Three-phase double-row concentrated winding permanent magnet motor - Google Patents
Three-phase double-row concentrated winding permanent magnet motor Download PDFInfo
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- CN104167892A CN104167892A CN201310745091.7A CN201310745091A CN104167892A CN 104167892 A CN104167892 A CN 104167892A CN 201310745091 A CN201310745091 A CN 201310745091A CN 104167892 A CN104167892 A CN 104167892A
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- 238000004804 winding Methods 0.000 title claims abstract description 148
- 230000005855 radiation Effects 0.000 claims abstract description 56
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 70
- 229910052742 iron Inorganic materials 0.000 claims description 31
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 4
- 238000005054 agglomeration Methods 0.000 claims description 3
- 230000002776 aggregation Effects 0.000 claims description 3
- 239000007767 bonding agent Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000001360 synchronised effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 2
- 239000012809 cooling fluid Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000005405 multipole Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000005284 excitation Effects 0.000 description 1
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Abstract
The invention relates to the field of permanent magnet containing synchronous motors, and particularly relates to a three-phase double-row concentrated winding permanent magnet motor. The three-phase double-row concentrated winding permanent magnet motor comprises a motor shaft (1), a radiation ring (2), a motor stator core (3), and motor armature windings (4). The three-phase double-row concentrated winding permanent magnet motor is characterized in that the radiation ring (2) is formed by sequentially splicing 10 radiation magnetic tiles (21), the radiation ring (2) is circular and hoops the motor shaft (1), the motor stator core (3) sleeves the radiation ring (2), a gap is left between the motor stator core (3) and the radiation ring (2), the central axes of the motor shaft (1), the radiation ring (2) and the motor stator core (3) coincide, and a wire is wound inside winding slots (31) turn by turn to form 12 motor armature windings (4). The three-phase double-row concentrated winding permanent magnet motor has the advantages of high rated output power, high degree of automation in the production process, high production efficiency, and wide range of application.
Description
Technical field
The present invention relates to the synchronous machine field of permanent magnet, be specially the double concentrated winding permanent magnet motor of a kind of three-phase.
Background technology
Magneto belongs to three-phase synchronous motor class, its rotor field be can't help the winding of direct current excitation and is set up, and directly by high energy product permanent magnetic material, provided, have simple in structure, volume is little, lightweight, loss is little, efficiency is high, power factor advantages of higher, be mainly used in requiring response fast, in the high-performance servomechanism of speed-regulating range width, accurate positioning.The follow conventional lines method for designing of three-phase synchronous motor of Design of PM Motor, adopts every extremely every phase groove to count the multiple-grooved distributed winding design that q is integer, the additional eddy current loss and the magnetic hysteresis loss that with the harmonic field reducing in armature reacting field, in rotor pole surface, produce.For example: 6 utmost point motor stator slot numbers are elected 18 grooves or 36 grooves or 27 grooves (distributed winding of q=3/2) as, corresponding winding configuration is three-phase distributed winding.Motor for q=2, the span of distributed winding is 1～6.More than 50% being formed by winding overhang line of stator winding resistance, and the I of stator winding
2r heating loss accounts for motor total losses
electric machine temperature rise is played to conclusive impact.The rated output power of motor determines by electric machine temperature rise limit value, and motor internal loss value has determined electric machine temperature rise, has also just limited the rated output power of motor.
Summary of the invention
In order to overcome the defect of prior art, provide a kind of rated output power high, Automation of Manufacturing Process degree is high, and the motor that production efficiency is high the invention discloses the double concentrated winding permanent magnet motor of a kind of three-phase.
The present invention reaches goal of the invention by following technical solution:
The double concentrated winding permanent magnet motor of three-phase, comprises motor shaft, radiation ring, electric machine stator iron and armature winding as rotor yoke, it is characterized in that:
Radiation ring is put together successively by piece radiation magnetic shoe, 2 blocks of adjacent radiation magnetic shoes are different at the magnetic pole of same one end, the central angle in every its cross section of radiation magnetic shoe is all 36 °, radiation ring is circular ring type, radiation hoop is outside motor shaft, electric machine stator iron is enclosed within outside radiation ring, between electric machine stator iron and radiation ring, leave gap, motor shaft, radiation ring and this three's of electric machine stator iron central axes, on the madial wall of electric machine stator iron, have the slot for winding parallel with electric machine stator iron central axis, the quantity of slot for winding is 12, slot for winding is evenly distributed along the circumferencial direction of electric machine stator iron inner hole section, 12 slot for windings are divided into 12 sections the cross section of electric machine stator iron endoporus, wire is by forming 12 armature windings all over the ground in slot for winding, each armature winding has 2 terminals, armature winding around to all identical in each slot for winding, an optional armature winding is made as No. 1, by given numbering direction, each armature winding is made as No. 1～No. 12 successively, numbering direction is clockwise direction or counter clockwise direction, an armature winding in each slot for winding has electric current to flow into end a end and outflow of bus current b end, the mode of connection of each armature winding is:
The a end of No. 1 armature winding and the b end of No. 8 armature windings are connected successively; This group connects the 1st end as U phase; The b end of No. 3 armature windings and the b end of No. 9 armature windings are connected successively; This group connects the 2nd end as U phase;
The b end of No. 4 armature windings and a end of No. 9 armature windings are connected successively; This group connects the 1st end as V phase; The b end of No. 5 armature windings and a end of No. 10 armature windings are connected successively; This group connects the 2nd end as V phase;
The a end of No. 5 armature windings and the b end of No. 12 armature windings are connected successively; This group connects the 1st end as W phase; The b end of No. 7 armature windings and the b end of No. 1 armature winding are connected successively; This group connects the 2nd end as W phase;
The a end of the b end of No. 9 armature windings, No. 10 armature windings and the b end of No. 1 armature winding are connected successively as asterism;
Between adjacent armature winding, be lined with edge layer;
Motor shaft, radiation ring, electric machine stator iron and armature winding are all located in casing, and an end cap is respectively established at the two ends of casing, and the center of two end caps is located at the two ends of motor shaft by bearing, between end cap and casing, and all sealed between motor shaft and two end caps.
The double concentrated winding permanent magnet motor of described three-phase, is characterized in that: radiation magnetic shoe radiation ring adopts the Fe-Nd-B permanent magnetic material agglomeration with high energy product to form, and radiation magnetic shoe adopts the bonding radiation ring that is solidified into of bonding agent.
The double concentrated winding permanent magnet motor of described three-phase, it is characterized in that: also comprise transducer, transducer is selected any one in incremental encoder, absolute value type encoder and resolver, transducer is located in casing, the rotating shaft of transducer is fixedly connected with the mode of motor shaft with central axes, and the outside of transducer covers with outer cover plate.
Operation principle of the present invention is as follows:
The double concentrated winding permanent magnet motor armature reaction waveform of three-phase contains abundant harmonic magnetic potential.These harmonic magnetic potentials except even number time, three times and three integral multiple does not exist for several times, all the other harmonic waves as: 5, the harmonic wave of the number of times such as 7,11,13,17,19,23,25,29,31,35,37 is all present in the air gap of motor.
If: armature reaction magnetic potential
And available Fourier series is expressed as:
the corresponding magnetic potential component amplitude of above each harmonic can be represented by the formula:
So can draw:
Fundamental magnetic potential amplitude after three-phase is synthetic represents with following formula:
in formula, the implication of each parameter is as follows:
M---number of motor phases,
W---every windings in series number of turn,
---fundamental wave winding coefficient,
I---the phase current (A. of unit, effective value) when star connects,
P---magnetic pole logarithm,
Hundreds of times of harmful harmonic field intensity of common three-phase synchronous motor are to magneto, so can adopt multipole few groove to concentrate the design of winding on magneto.
In the present invention, winding basic parameter is: z=12, and 2p=10, m=3:
Groove electrical degree α=150 °, this groove electrical degree has extremely strong weakening ability for 5,7 subharmonic, because the numerical value of the winding coefficient of 5,7 times is very little, as follows:
To 5 subharmonic, during v=5,
To 7 subharmonic, during v=7,
The present invention is by pulse duration harmonic (be Pulse Width Modulation, be called for short PWM) driver power supply, and motor stator must have good earthing screw, to improve the grade of motor safety operation.
Stator in the present invention adopts advanced Shooting Technique, and environmental protection and energy-conservation grade get a promotion, and special-purpose injected plastics material has good mechanical strength and heat conductivility.
Armature winding in the present invention adopts high efficiency automatic winding machine operation, has improved labor productivity, has reduced manufactured materials cost.
In the present invention, between casing and end cap, be provided with O-ring seals and skeleton radial direction seal ring, degree of protection is IP65, IP67 or IP68, has met the instructions for use that has cooling fluid to spray the Digit Control Machine Tool under environment, has expanded range of application.
The present invention also can install various feedback element according to different demands.As: incremental encoder, absolute value type encoder, resolver etc.
The invention has the beneficial effects as follows: rated output power is high, Automation of Manufacturing Process degree is high, and production efficiency is high, applied widely.
Accompanying drawing explanation
Fig. 1 is schematic cross-section of the present invention;
Fig. 2 is the half sectional view of main apparent direction of the present invention;
Fig. 3 is left view of the present invention;
Fig. 4 is that the wiring of armature winding in the present invention launches schematic diagram;
Fig. 5 is the half sectional view with the main apparent direction of the present invention of transducer.
Embodiment
By specific embodiment, further illustrate the present invention below.
Embodiment 1
The double concentrated winding permanent magnet motor of three-phase, comprises motor shaft 1, radiation ring 2, electric machine stator iron 3 and armature winding 4 as rotor yoke, and as shown in Figure 1 to 4, concrete structure is:
Radiation ring 2 is put together successively by 10 blocks of radiation magnetic shoes 21, 2 blocks of adjacent radiation magnetic shoes 21 are different at the magnetic pole of same one end, the central angle in every radiation magnetic shoe 21 its cross sections is all 36 °, radiation ring 2 is circular ring type, radiation ring 2 hoops are outside motor shaft 1, electric machine stator iron 3 is enclosed within outside radiation ring 2, between electric machine stator iron 3 and radiation ring 2, leave gap, motor shaft 1, radiation ring 2 and electric machine stator iron 3 these threes' central axes, on the madial wall of electric machine stator iron 3, have the slot for winding 31 parallel with electric machine stator iron 3 central axis, the quantity of slot for winding 31 is 12, slot for winding 31 is evenly distributed along the circumferencial direction of electric machine stator iron 3 inner hole sections, 12 slot for windings 31 are divided into 12 sections the cross section of electric machine stator iron 3 endoporus, wire is by all over the ground around 12 armature windings 4 of the interior formation of slot for winding 31, each armature winding 4 has 2 terminals, the interior armature winding 4 of each slot for winding 31 around to all identical, an optional armature winding 4 is made as No. 1, by given numbering direction, each armature winding 4 is made as No. 1～No. 12 successively, numbering direction is clockwise direction or counter clockwise direction, an armature winding 4 in each slot for winding 31 has electric current to flow into end a end and outflow of bus current b end, the mode of connection of each armature winding 4 as shown in Figure 4, described in specific as follows:
The a end of No. 1 armature winding 4 and the b end of No. 8 armature windings 4 are connected successively; This group connects the 1st end as U phase; The b end of No. 3 armature windings 4 and the b end of No. 9 armature windings 4 are connected successively; This group connects the 2nd end as U phase;
The b end of No. 4 armature windings 4 and a end of No. 9 armature windings 4 are connected successively; This group connects the 1st end as V phase; The b end of No. 5 armature windings 4 and a end of No. 10 armature windings 4 are connected successively; This group connects the 2nd end as V phase;
The a end of No. 5 armature windings 4 and the b end of No. 12 armature windings 4 are connected successively; This group connects the 1st end as W phase; The b end of No. 7 armature windings 4 and the b end of No. 1 armature winding 4 are connected successively; This group connects the 2nd end as W phase;
The a end of the b end of No. 9 armature windings 4, No. 10 armature windings 4 and the b end of No. 1 armature winding 4 are connected successively as asterism;
Between adjacent armature winding 4, be lined with edge layer;
Motor shaft 1, radiation ring 2, electric machine stator iron 3 and armature winding 4 are all located in casing, and an end cap is respectively established at the two ends of casing, and the center of two end caps is located at the two ends of motor shaft 1 by bearing, between end cap and casing, and all sealed between motor shaft 1 and two end caps.
In the present embodiment, radiation magnetic shoe 21 radiation rings 2 adopt the Fe-Nd-B permanent magnetic material agglomeration with high energy product to form, and radiation magnetic shoe 21 adopts the bonding radiation ring 2 that is solidified into of bonding agent.
The operation principle of the present embodiment is as follows:
The double concentrated winding permanent magnet motor armature reaction waveform of three-phase contains abundant harmonic magnetic potential.These harmonic magnetic potentials except even number time, three times and three integral multiple does not exist for several times, all the other harmonic waves as: 5, the harmonic wave of the number of times such as 7,11,13,17,19,23,25,29,31,35,37 is all present in the air gap of motor.
If: armature reaction magnetic potential
And available Fourier series is expressed as:
the corresponding magnetic potential component amplitude of above each harmonic can be represented by the formula:
So can draw:
Fundamental magnetic potential amplitude after three-phase is synthetic represents with following formula:
in formula, the implication of each parameter is as follows:
M---number of motor phases,
W---every windings in series number of turn,
---fundamental wave winding coefficient,
I---the phase current (A, effective value) when star connects
P---magnetic pole logarithm,
Hundreds of times of harmful harmonic field intensity of common three-phase synchronous motor are to magneto, so can adopt multipole few groove to concentrate the design of winding on magneto.
In the present embodiment, winding basic parameter is: z=12, and 2p=10, m=3:
Groove electrical degree α=150 °, this groove electrical degree has extremely strong weakening ability for 5,7 subharmonic, because the numerical value of the winding coefficient of 5,7 times is very little, as follows:
To 5 subharmonic, during v=5,
To 7 subharmonic, during v=7,
The present embodiment is by pulse width modulation (be Pulse Width Modulation, be called for short PWM) ripple driver power supply, and motor stator must have good earthing screw, to improve the grade of motor safety operation.
Stator in the present embodiment adopts advanced Shooting Technique, and environmental protection and energy-conservation grade get a promotion, and special-purpose injected plastics material has good mechanical strength and heat conductivility.
Armature winding 4 in the present embodiment adopts high efficiency automatic winding machine operation, has improved labor productivity, has reduced manufactured materials cost.
In the present embodiment, between casing and end cap, be provided with O-ring seals and skeleton radial direction seal ring, degree of protection is IP65, IP67 or IP68, has met the instructions for use that has cooling fluid to spray the Digit Control Machine Tool under environment, has expanded range of application.
Embodiment 2
The double concentrated winding permanent magnet motor of three-phase, comprises machine shaft 1, radiation ring 2, electric machine stator iron 3 and armature winding 4 as rotor yoke,
The double concentrated winding permanent magnet motor of a kind of three-phase, comprise motor shaft 1, radiation ring 2, electric machine stator iron 3 and armature winding 4 as rotor yoke, as shown in Figure 1 to 4, also comprise transducer 7, in the present embodiment, transducer 7 is selected incremental encoder, and as shown in Figure 5, transducer 7 is located in casing 5, the rotating shaft of transducer 7 is fixedly connected with the mode of motor shaft 1 with central axes, and the outside of transducer 7 covers with outer cover plate 71.Other structures are all same with embodiment 1.
When the present embodiment is used, when motor rotation, the signal that can export by the holding wire of the incremental encoder as transducer 7 is known some operating parameters of motor.Other usings method are all same with embodiment 1.
Embodiment 3
The double concentrated winding permanent magnet motor of a kind of three-phase, comprise motor shaft 1, radiation ring 2, electric machine stator iron 3 and armature winding 4 as rotor yoke, also comprise transducer 7, in the present embodiment, transducer 7 is selected absolute value type encoder, transducer 7 is located in casing 5, the rotating shaft of transducer 7 is fixedly connected with the mode of motor shaft 1 with central axes, and the outside of transducer 7 covers with outer cover plate 71.Other structures are all same with embodiment 1.
When the present embodiment is used, when motor rotation, the signal that can export by the holding wire of the incremental encoder as transducer 7 is known some operating parameters of motor.Other usings method are all same with embodiment 1.
Embodiment 4
The double concentrated winding permanent magnet motor of a kind of three-phase, comprise motor shaft 1, radiation ring 2, electric machine stator iron 3 and armature winding 4 as rotor yoke, also comprise transducer 7, in the present embodiment, transducer 7 is selected resolver, transducer 7 is located in casing 5, the rotating shaft of transducer 7 is fixedly connected with the mode of motor shaft 1 with central axes, and the outside of transducer 7 covers with outer cover plate 71.Other structures are all same with embodiment 1.
When the present embodiment is used, when motor rotation, the signal that can export by the holding wire of the incremental encoder as transducer 7 is known some operating parameters of motor.Other usings method are all same with embodiment 1.
Claims (3)
1. the double concentrated winding permanent magnet motor of three-phase, comprises motor shaft (1), radiation ring (2), electric machine stator iron (3) and armature winding (4), it is characterized in that:
Radiation ring (2) is put together successively by 10 blocks of radiation magnetic shoes (21), adjacent 2 blocks of radiation magnetic shoes (21) are different at the magnetic pole of same one end, the central angle in its cross section of every block of radiation magnetic shoe (21) is all 36 °, radiation ring (2) is circular ring type, radiation ring (2) hoop is outside motor shaft (1), electric machine stator iron (3) is enclosed within outside radiation ring (2), between electric machine stator iron (3) and radiation ring (2), leave gap, motor shaft (1), radiation ring (2) and this three's of electric machine stator iron (3) central axes, on the madial wall of electric machine stator iron (3), have the slot for winding (31) parallel with electric machine stator iron (3) central axis, the quantity of slot for winding (31) is 12, slot for winding (31) is evenly distributed along the circumferencial direction of electric machine stator iron (3) inner hole section, 12 slot for windings (31) are divided into 12 sections the cross section of electric machine stator iron (3) endoporus, wire is by forming 12 armature windings (4) all over the ground in slot for winding (31), each armature winding (4) has 2 terminals, the interior armature winding of each slot for winding (31) (4) around to all identical, an optional armature winding (4) is made as No. 1, by given numbering direction, each armature winding (4) is made as No. 1～No. 12 successively, numbering direction is clockwise direction or counter clockwise direction, an armature winding (4) in each slot for winding (31) has electric current to flow into end a end and outflow of bus current b end, the mode of connection of each armature winding (4) is:
The a end of No. 1 armature winding (4) and the b end of No. 8 armature windings (4) are connected successively; This group connects the 1st end as U phase; The b end of No. 3 armature windings (4) and the b end of No. 9 armature windings (4) are connected successively; This group connects the 2nd end as U phase;
The b end of No. 4 armature windings (4) and a end of No. 9 armature windings (4) are connected successively; This group connects the 1st end as V phase; The b end of No. 5 armature windings (4) and a end of No. 10 armature windings (4) are connected successively; This group connects the 2nd end as V phase;
The a end of No. 5 armature windings (4) and the b end of No. 12 armature windings (4) are connected successively; This group connects the 1st end as W phase; The b end of No. 7 armature windings (4) and the b end of No. 1 armature winding (4) are connected successively; This group connects the 2nd end as W phase;
The b end of the b end of No. 9 armature windings (4), a end of No. 10 armature windings (4) and No. 1 armature winding (4) is connected successively as asterism;
Between adjacent armature winding (4), be lined with edge layer;
Motor shaft (1), radiation ring (2), electric machine stator iron (3) and armature winding (4) are all located in casing (5), an end cap (6) is respectively established at the two ends of casing (5), the center of two end caps (6) is located at the two ends of motor shaft (1) by bearing, between end cap (6) and casing (5), and all sealed between motor shaft (1) and two end caps (6).
2. the double concentrated winding permanent magnet motor of three-phase as claimed in claim 1, it is characterized in that: radiation magnetic shoe (21) radiation ring (2) adopts Fe-Nd-B permanent magnetic material agglomeration to form, and radiation magnetic shoe (21) adopts the bonding radiation ring (2) that is solidified into of bonding agent.
3. the double concentrated winding permanent magnet motor of three-phase as claimed in claim 1 or 2, it is characterized in that: also comprise transducer (7), transducer (7) is selected any one in incremental encoder, absolute value type encoder and resolver, transducer (7) is located in casing (5), the rotating shaft of transducer (7) is fixedly connected with the mode of motor shaft (1) with central axes, and the outer cover plate for outside (71) of transducer (7) covers.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310745091.7A CN104167892B (en) | 2013-12-30 | 2013-12-30 | The double concentratred winding magneto of three-phase |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310745091.7A CN104167892B (en) | 2013-12-30 | 2013-12-30 | The double concentratred winding magneto of three-phase |
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| CN104167892A true CN104167892A (en) | 2014-11-26 |
| CN104167892B CN104167892B (en) | 2019-03-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980824A (en) * | 2017-11-30 | 2019-07-05 | 菲艾姆股份有限公司 | Motor, actuating unit and the method for operation motor |
| CN110017250A (en) * | 2019-03-29 | 2019-07-16 | 华中科技大学 | A kind of variable-speed constant-frequency wind power generation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10126993A (en) * | 1996-10-21 | 1998-05-15 | Yaskawa Electric Corp | Switching device of winding for motor in machine tool |
| CN1375911A (en) * | 2002-05-10 | 2002-10-23 | 刘硕成 | Single-phase AC permanent-magnet synchronous motor |
| JP2005051841A (en) * | 2003-07-30 | 2005-02-24 | Hitachi Ltd | Motor, compressor, and air conditioner |
| CN101268601A (en) * | 2005-09-23 | 2008-09-17 | 迈克尔·米利兹尔 | Electrical drive machine |
-
2013
- 2013-12-30 CN CN201310745091.7A patent/CN104167892B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10126993A (en) * | 1996-10-21 | 1998-05-15 | Yaskawa Electric Corp | Switching device of winding for motor in machine tool |
| CN1375911A (en) * | 2002-05-10 | 2002-10-23 | 刘硕成 | Single-phase AC permanent-magnet synchronous motor |
| JP2005051841A (en) * | 2003-07-30 | 2005-02-24 | Hitachi Ltd | Motor, compressor, and air conditioner |
| CN101268601A (en) * | 2005-09-23 | 2008-09-17 | 迈克尔·米利兹尔 | Electrical drive machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980824A (en) * | 2017-11-30 | 2019-07-05 | 菲艾姆股份有限公司 | Motor, actuating unit and the method for operation motor |
| CN109980824B (en) * | 2017-11-30 | 2022-01-28 | 菲艾姆股份有限公司 | Electric motor, actuating unit and method for operating an electric motor |
| US11342804B2 (en) | 2017-11-30 | 2022-05-24 | Feaam Gmbh | Electric machine, activation unit and method for operating an electric machine |
| CN110017250A (en) * | 2019-03-29 | 2019-07-16 | 华中科技大学 | A kind of variable-speed constant-frequency wind power generation system |
| CN110017250B (en) * | 2019-03-29 | 2020-12-08 | 华中科技大学 | Variable-speed constant-frequency wind power generation system |
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Effective date of registration: 20170911 Address after: 201607 Shanghai City Maogang town new road 517 Lane 8 Applicant after: SHANGHAI ZHONGCHEN ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 201607 Shanghai Songjiang District City Maogang town new wave 517 Lane 8, -2 Applicant before: SHANGHAI YOUJI DRIVE TECHNOLOGY Co.,Ltd. |
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Address after: No. 8, Lane 517, Xinbo Road, Maogang Town, Shanghai, July 2016 Patentee after: Shanghai Zhongchen Electronic Technology Co.,Ltd. Country or region after: China Address before: No. 8, Lane 517, Xinbo Road, Maogang Town, Shanghai, July 2016 Patentee before: SHANGHAI ZHONGCHEN ELECTRONIC TECHNOLOGY Co.,Ltd. Country or region before: China |