CN106229770B - A kind of locking-unlocking device of charging plug - Google Patents
A kind of locking-unlocking device of charging plug Download PDFInfo
- Publication number
- CN106229770B CN106229770B CN201610769816.XA CN201610769816A CN106229770B CN 106229770 B CN106229770 B CN 106229770B CN 201610769816 A CN201610769816 A CN 201610769816A CN 106229770 B CN106229770 B CN 106229770B
- Authority
- CN
- China
- Prior art keywords
- locking
- shell
- locking bar
- placement
- charging plug
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/701—Structural association with built-in electrical component with built-in switch the switch being actuated by an accessory, e.g. cover, locking member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/627—Snap or like fastening
- H01R13/6275—Latching arms not integral with the housing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/26—Connectors or connections adapted for particular applications for vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses the locking-unlocking devices that one kind can make manually release the charging plug of the lock state of locking bar, its structure includes: the locking bar of shell and living hinge on the shell, the front end of locking bar is provided with grab, Lock spring is provided between the rear portion and shell of the locking bar, the clamping block for being provided with decelerating motor in the shell and being mounted on the output shaft of decelerating motor, locking boss is provided on clamping block, which is located between locking bar and the hinge joint and the Lock spring of shell.The locking-unlocking device of the charging plug is mainly used on the charging plug on the charging station to charge for electric car.
Description
Technical field
The present invention relates to the locking-unlocking devices more particularly to a kind of charging plug between a kind of charging connector
Locking-unlocking device.
Background technique
Currently, according to charging plug and charging socket that the automobile charging interface of GB/T20234.3-2015 standard produces,
Relatively simple for structure, the specific set-up mode of its locking-unlocking device are as follows: bayonet is set on the shell of charging socket, is being filled
Locking bar is movably hinged on the shell of plug, the front end of locking bar is provided with the grab matched with the bayonet, locking bar
Lock spring is provided between rear portion and the shell of the charging plug.Its working principle is that: when charging plug insertion charging is inserted
After seat, locking bar leans forward under the action of Lock spring, so that the grab on locking bar is fallen into the bayonet on charging socket, works as needs
When transfering to charging plug, the rear portion of locking bar need to be only pressed, so that locking bar is swung back, grab is detached from the blocking of bayonet, then, so that it may will
Charging plug is transferred to from charging socket.In actual use, due to locking bar, who can be pressed, it cannot be guaranteed that not
Someone makes trouble by deliberate intention or malicious sabotage, charges charging plug transfer to during the charging process.In addition to this, charging control circuit without
Method perceives the state of locking bar, needs when charging to manually start, operate more troublesome.
Summary of the invention
The technical problems to be solved by the present invention are: filling for the lock state that can not manually release locking bar can be made by providing one kind
The locking-unlocking device of plug.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows: the locking-unlocking device of charging plug, packet
Include: the locking bar of shell and living hinge on the shell, the front end of locking bar is provided with grab, between the rear portion and shell of the locking bar
It is provided with Lock spring, the clamping block that decelerating motor is provided in the shell and is mounted on the output shaft of decelerating motor,
Locking boss is provided on clamping block, which is located between locking bar and the hinge joint and the Lock spring of shell.
Further technical problem to be solved by this invention is: providing whether in place one kind can perceive the locking of locking bar
The locking-unlocking device of charging plug.
To solve above-mentioned further technical problem, the technical solution adopted by the present invention are as follows: in the charging plug
Locking-unlocking device in, locking microswitch is additionally provided in the shell, being provided on the clamping block can be by institute
State the pushing guiding face that the pressing lever in locking microswitch inwardly pushes.
As a preferred embodiment, described to push the one of guiding face in the locking-unlocking device of the charging plug
Kind specific set-up mode are as follows: offer on the clamping block and arc-shaped led with lock that the pressing lever in microswitch matches
Draw groove, the bottom wall of guide groove forms the pushing guiding face, seamlessly transits from shallow to deep.
Further technical problem to be solved by this invention is: providing one kind can perceive whether someone presses locking bar
The locking-unlocking device of charging plug.
To solve above-mentioned further technical problem, the technical solution adopted by the present invention are as follows: inserted in the charging
In the locking-unlocking device of head, it is additionally provided with detectable locking bar in the shell whether it is in the detection fine motion of locking state and open
It closes, the pressing lever for detecting microswitch is located between locking bar and the hinge joint and the Lock spring of shell.
As a preferred embodiment, it in the locking-unlocking device of the charging plug, is also set up in the shell
There is placement box, the decelerating motor, clamping block, locking microswitch and detection microswitch are arranged in placement box, peace
Set the pressing placement hole that matches of pressing lever offered on box with detection microswitch and with the lock tab on clamping block
The locking limit hole that platform matches.
As a preferred embodiment, in the locking-unlocking device of the charging plug, the placement box includes: bottom
Box and the cover box being arranged in back box.
As a preferred embodiment, in the locking-unlocking device of the charging plug, one kind of the Lock spring
Specific set-up mode are as follows: be provided with locking bar placement seat on the rear portion bottom surface of the locking bar, peace in shell is provided in the shell
Seat is set, Lock spring is faced on placement seat in locking bar placement seat and shell and is respectively arranged with placement blind hole, Lock spring is strapped in
In placement blind hole in locking bar placement seat and shell on this pair of of placement seat of placement seat.
As a preferred embodiment, it in the locking-unlocking device of the charging plug, is opened up on the placement box
There is emergency solution lockhole corresponding with the locking boss, is offered on the shell corresponding with the emergency solution lockhole
Emergency entrance hole.
As a preferred embodiment, in the locking-unlocking device of the charging plug, the decelerating motor is straight
Flow decelerating motor.
The beneficial effects of the present invention are: the present invention is inserted into charging plug and is charged by setting decelerating motor and clamping block
Socket, after starting to charge, decelerating motor drives clamping block to rotate to the direction close to locking bar, so that the locking boss on clamping block
Positioned at the lower section of locking bar, locking bar can not be thus pressed, to ensure that in charging process, charging plug and charging socket are always
In the state that is reliably connected, charging process will not be interrupted because of accidental unlocking.In addition, due to having installed locking microswitch additional, and
The pushing guiding face seamlessly transitted from shallow to deep is provided on clamping block, on the one hand, avoid because clamping block is to locking fine motion
The pushing of switch and caused by damage, thus extend locking microswitch service life, on the other hand, lock microswitch
It can perceive whether clamping block is rotated in place, so that the control of charging control circuit is safe and reliable；In addition to this, due to installing additional
Microswitch is detected, so as to perceive whether locking bar is depressed, so that the control of charging control circuit is more safe and reliable.
Detailed description of the invention
Fig. 1 is one of the structural schematic diagram of locking-unlocking device of charging plug of the present invention.
Fig. 2 is the part enlarged structure schematic diagram of the locking-unlocking device of charging plug of the present invention.
Fig. 3 is the second structural representation of the locking-unlocking device of charging plug of the present invention.
Fig. 4 is the enlarged structure schematic diagram of part A in Fig. 3.
Appended drawing reference in Fig. 1 to Fig. 4 are as follows: 1, shell, 11, emergency entrance hole, 2, placement box, 21, cover box, 211, emergency
Solution lockhole, 212, half of placement seat, 22, back box, 222, half of placement seat, 3, locking bar, 31, grab, 32, locking bar placement seat, 4,
DC speed-reducing, 5, clamping block, 51, locking boss, 52, guide groove, 521, pushing guiding face, 6, Lock spring, 7, lock
Determine microswitch, 8, detection microswitch.
Specific embodiment
With reference to the accompanying drawing, a kind of specific implementation of the locking-unlocking device of charging plug described in the present invention is described in detail
Scheme:
As shown in Figure 1, Figure 2 and Figure 3, the locking-unlocking device of charging plug of the present invention, structure include: outer
Shell 1, the placement box 2 being made of back box 22 and cover box 21 being arranged in shell 1 and the locking bar 3 being movably articulated on shell 1,
The front end of locking bar 3 is provided with grab 31, and Lock spring 6 is provided between the rear portion and shell 1 of the locking bar 3, disposes and sets in box 2
It is equipped with DC speed-reducing 4, the clamping block being mounted on the output shaft of DC speed-reducing 45, the lock matched with clamping block 5
Determine microswitch 7, can detect the detection microswitch 8 whether locking bar 3 is in locking state, is provided on the clamping block 5
Lock boss 51, offer on the placement box 2 the pressing placement hole that is matched with the pressing lever detected in microswitch 8 with
And the locking limit hole matched with locking boss 51, the locking boss 51 are stretched out from the locking limit hole of placement box 2,
Pressing lever in the detection microswitch 8 is stretched out from the pressing placement hole of placement box 2, also, is detected in microswitch 8
Pressing lever and the locking boss 51 be respectively positioned between the hinge joint of locking bar 3 and shell 1 and the Lock spring 6, such as
Shown in Fig. 4, the pushing guiding face that the pressing lever locked in microswitch 7 can be inwardly pushed is provided on the clamping block 5
521, a kind of specific set-up mode of the pushing guiding face 521 are as follows: offered on clamping block 5 with locking microswitch 7 in by
The arc-shaped guide groove 52 that compression bar matches, the surface of 52 bottom wall of guide groove seamlessly transits from shallow to deep, formed described in
Pushing guiding face 521；In the present embodiment, a kind of specific set-up mode of the Lock spring 6 are as follows: after the locking bar 3
It is provided with locking bar placement seat 32 on portion bottom surface, is provided with placement seat in shell on the placement box 2 in the shell 1, peace in the shell
It sets seat to be involuted by half of placement seat 212 in half of the mounting base 222 and cover box 21 in back box 22, the locking bar placement seat
32 and shell in face Lock spring 6 on placement seat and be respectively arranged with placement blind hole, Lock spring 6 is strapped in locking bar placement seat 33
In placement blind hole with placement seat in shell on this pair of of placement seat；Offered on the cover box 21 of the placement box 2 with it is described
It locks the corresponding emergency of boss 51 and solves lockhole 211, offered on the shell 1 corresponding with the emergency solution lockhole 211
Need the emergency entrance hole 11 that could be inserted into specific purpose tool.
The course of work of the invention are as follows: when charging plug be inserted into charging socket and in place after, the locking bar 3 on charging plug exists
It leans forward under the action of Lock spring 6, so that the grab 31 of 3 front end of locking bar is fallen into the bayonet of charging socket, charging control circuit
It can be perceived after locking bar 3 locked by detecting microswitch 8, by powering to DC speed-reducing 4 is positive, so that direct current
The output shaft of decelerating motor 4 with clamping block 5 towards the rotation of locking bar 3, boss 51 will be locked go to the lower section of locking bar 3, at this moment without
Method presses locking bar 3, so that fine motion will be locked by pushing guiding face 521 after locking bar 3 keeps lock state, locking boss 51 to go to position
The pressing lever of switch 7 is inwardly also shifted position onto and is started to charge after charging control circuit obtains the signal in place of locking microswitch 7；
After charging, charging control circuit disconnects charge circuit, then, by giving 4 reverse power supply of DC speed-reducing, so that direct current
Direction of the output shaft of decelerating motor 4 with clamping block 5 away from locking bar 3 rotates, and such locking bar 3 is just departing from locking boss
51 control presses 3 rear portion of locking bar, lifts the front of locking bar 3, then, charging plug is transferred to from charging socket.
In conclusion only presently preferred embodiments of the present invention, is not used to limit the scope of implementation of the present invention, it is all according to
Equivalent changes and modifications made by shape described in scope of the invention as claimed, construction, feature and spirit should all be included in this
In the scope of the claims of invention.
Claims (5)
1. a kind of locking-unlocking device of charging plug, comprising: shell and locking bar on the shell is movably hinged, before locking bar
End is provided with grab, it is characterised in that: is provided with Lock spring between the rear portion and shell of the locking bar, sets in the shell
The clamping block for being equipped with decelerating motor, being mounted on the output shaft of decelerating motor is provided with locking boss on clamping block, the lock tab
Platform is located between locking bar and the hinge joint and the Lock spring of shell；Locking fine motion is additionally provided in the shell to open
It closes, the pushing guiding face that the pressing lever in the locking microswitch can be inwardly pushed is provided on the clamping block；Institute
State a kind of specific set-up mode for pushing guiding face are as follows: offer on the clamping block and the pressing lever in locking microswitch
The arc-shaped guide groove matched, the bottom wall of guide groove form the pushing guiding face, seamlessly transit from shallow to deep；Institute
It is additionally provided with the detection microswitch whether detectable locking bar is in locking state in the shell stated, detects the pressing of microswitch
Bar is located between locking bar and the hinge joint and the Lock spring of shell；Placement box is additionally provided in the shell, it is described
Decelerating motor, clamping block, locking microswitch and detection microswitch be arranged at placement box in, dispose box on offer with
Detect the pressing lever pressing placement hole matched in microswitch and the locking matched with the locking boss on clamping block
Limit hole.
2. the locking-unlocking device of charging plug according to claim 1, it is characterised in that: the placement box includes:
Back box and the cover box being arranged in back box.
3. the locking-unlocking device of charging plug according to claim 1 or 2, it is characterised in that: the Lock spring
A kind of specific set-up mode are as follows: be provided with locking bar placement seat on the rear portion bottom surface of the locking bar, be provided with shell in the shell
Interior placement seat faces Lock spring on placement seat in locking bar placement seat and shell and is respectively arranged with placement blind hole, Lock spring beam
It is tied in the placement blind hole in locking bar placement seat and shell on this pair of of placement seat of placement seat.
4. the locking-unlocking device of charging plug according to claim 3, it is characterised in that: opened up on the placement box
There is emergency solution lockhole corresponding with the locking boss, is offered on the shell corresponding with the emergency solution lockhole
Emergency entrance hole.
5. the locking-unlocking device of charging plug according to claim 3, it is characterised in that: the decelerating motor is straight
Flow decelerating motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610769816.XA CN106229770B (en) | 2016-08-30 | 2016-08-30 | A kind of locking-unlocking device of charging plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610769816.XA CN106229770B (en) | 2016-08-30 | 2016-08-30 | A kind of locking-unlocking device of charging plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106229770A CN106229770A (en) | 2016-12-14 |
| CN106229770B true CN106229770B (en) | 2019-04-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610769816.XA Active CN106229770B (en) | 2016-08-30 | 2016-08-30 | A kind of locking-unlocking device of charging plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106229770B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3605744A4 (en) * | 2017-03-21 | 2020-12-09 | Kunshan Huihe New Energy Technology Co., Ltd. | Charging gun |
| CN106887751B (en) * | 2017-03-21 | 2019-03-29 | 昆山惠禾新能源科技有限公司 | Charging gun |
| CN106848731B (en) * | 2017-03-21 | 2019-04-23 | 昆山惠禾新能源科技有限公司 | Charging gun |
| EP3691931A1 (en) * | 2017-10-06 | 2020-08-12 | Kiekert AG | Locking device of an electric connection device for electric or hybrid motor vehicles |
| CN107666078A (en) * | 2017-10-30 | 2018-02-06 | 蔚来汽车有限公司 | Charging gun locking system, body component and charging gun |
| CN107745653B (en) * | 2017-11-06 | 2018-09-21 | 平顶山发投远盈智慧能源有限公司 | A kind of new energy charging pile device |
| DE102019122418A1 (en) * | 2019-08-21 | 2021-02-25 | Kiekert Aktiengesellschaft | Electric charging device for a motor vehicle |
| CN112554674B (en) * | 2020-12-09 | 2022-02-11 | 南京信息职业技术学院 | Charging port door lock control device of new energy automobile and control method thereof |
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| CN105680243A (en) * | 2012-03-29 | 2016-06-15 | 古河电气工业株式会社 | Power supply connector |
| CN105896198A (en) * | 2016-05-18 | 2016-08-24 | 广州知崇新能源科技有限公司 | DC charging connector and connection method thereof |
| CN205509143U (en) * | 2016-03-24 | 2016-08-24 | 江阴信邦电子有限公司 | Locking means of rifle charges |
| CN205944643U (en) * | 2016-08-30 | 2017-02-08 | 张家港友诚科技机电有限公司 | Locking unlocking device of charging plug |
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2016
- 2016-08-30 CN CN201610769816.XA patent/CN106229770B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680243A (en) * | 2012-03-29 | 2016-06-15 | 古河电气工业株式会社 | Power supply connector |
| CN205509143U (en) * | 2016-03-24 | 2016-08-24 | 江阴信邦电子有限公司 | Locking means of rifle charges |
| CN105896198A (en) * | 2016-05-18 | 2016-08-24 | 广州知崇新能源科技有限公司 | DC charging connector and connection method thereof |
| CN205944643U (en) * | 2016-08-30 | 2017-02-08 | 张家港友诚科技机电有限公司 | Locking unlocking device of charging plug |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106229770A (en) | 2016-12-14 |
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Address after: Zhangjiagang City People's road Tangqiao town Suzhou City, Jiangsu province 215611 No. 106 Zhangjiagang Youcheng Electromechanical Technology Co. Ltd. Applicant after: Zhangjiagang Yi Cheng new energy Polytron Technologies Inc Address before: Zhangjiagang City People's road Tangqiao town Suzhou City, Jiangsu province 215611 No. 106 Zhangjiagang Youcheng Electromechanical Technology Co. Ltd. Applicant before: Zhangjiagang Uchen Technical Mechanical Electric Co., Ltd. |
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