CN102615374A - Series welding equipment for solar cell and easily maintained welding head for series welding of solar cell - Google Patents
Series welding equipment for solar cell and easily maintained welding head for series welding of solar cell Download PDFInfo
- Publication number
- CN102615374A CN102615374A CN2012101244428A CN201210124442A CN102615374A CN 102615374 A CN102615374 A CN 102615374A CN 2012101244428 A CN2012101244428 A CN 2012101244428A CN 201210124442 A CN201210124442 A CN 201210124442A CN 102615374 A CN102615374 A CN 102615374A
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- sidewall
- tip seat
- solar battery
- bonding tip
- battery sheet
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- 238000003466 welding Methods 0.000 title claims abstract description 82
- 238000005476 soldering Methods 0.000 claims description 36
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000002912 waste gas Substances 0.000 description 9
- 230000004907 flux Effects 0.000 description 8
- 230000006698 induction Effects 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Photovoltaic Devices (AREA)
Abstract
The invention relates to an easily maintained welding head for series welding of a solar cell. The easily maintained welding head comprises a welding head seat, an exhaust plate and a lateral plate, wherein the top part of the welding head seat is provided with an air suction pipe; the air suction pipe is close to one end of the welding head seat; the side wall of the welding head seat is provided with an air suction hole which is communicated with the air suction pipe; the lateral plate is fixed to the side wall of the welding head seat with the air suction hole; the surface of the lateral plate, which is opposite to the side wall of the welding head seat with the air suction hole is provided with a guide groove; one end of the guide groove is communicated with one end of the lateral plate; the two opposite surfaces of the exhaust plate are correspondingly provided with a groove, and a guide bulge part matched to the guide groove respectively; one side wall of the groove is provided with an air channel; and the exhaust plate is fixed between the side wall of the welding head seat and the lateral plate through the guide bulge part and the guide groove, and the air suction hole is communicated with the groove of the exhaust plate. When the exhaust plate is cleaned and maintained, the exhaust plate can be disassembled from the welding head seat if being directly drawn off. The invention also relates to series welding equipment for the solar cell.
Description
Technical field:
The present invention relates to welding technology field, particularly a kind of solar battery sheet series welding equipment and easy care solar battery sheet series welding soldering tip.
Background technology:
Development along with the full-automatic series welding machine of photovoltaic module.People are also increasingly high to the requirement of mechanization degree; Not only first-class working ability to be arranged, also will have conveniently and safeguard, in the process of solar energy crystal silicon cell sheet series welding machine; For the series welding of the completion battery sheet of efficiently guaranteeing the quality connects; Be provided with a lot of corresponding functional parts at the magnetic discharge welding head, the discharging waste gas plate that for example on the magnetic discharge welding head, fixedly installs discharges the waste gases and smoke that scaling powder produces in the welding process through the hole and the chamber that are provided with in the discharging waste gas plate.
Yet; The waste gases and smoke easy and crystalline can be stopped up the hole and the chamber of discharging waste gas plate; Because the discharging waste gas plate is fixedly installed on the magnetic discharge welding head, causes and can not carry out clean and maintenance to the hole and the chamber of discharging waste gas plate timely fast, and finally influence the processing of solar battery sheet series welding equipment.
Summary of the invention:
In view of this, be necessary to provide a kind of easy care solar battery sheet series welding soldering tip that is easy to clean the waste gases and smoke crystal.
Also be necessary to provide a kind of solar battery sheet series welding equipment that adopts above-mentioned easy care solar battery sheet series welding soldering tip.
A kind of easy care solar battery sheet series welding soldering tip; This easy care solar battery sheet series welding soldering tip adopts the electromagnetism mode of heating that solar battery sheet main grid line and welding are welded together; This easy care solar battery sheet series welding soldering tip comprises bonding tip seat, exhaustion plate and side plate; The top of bonding tip seat is provided with air intake duct; Air intake duct is near an end of bonding tip seat, and the suction hole that is communicated with air intake duct is set on the sidewall of bonding tip seat, and side plate is fixed on the sidewall with suction hole of bonding tip seat; The relative face of sidewall with suction hole of side plate and bonding tip seat is provided with guiding groove; And an end of guiding groove is communicated with an end of side plate, on opposing two faces of exhaustion plate corresponding respectively be provided with groove, with the suitable guide hump portion of guiding groove, a sidewall of groove is provided with air duct; Between exhaustion plate is fixed on bonding tip seat through guide hump portion and guiding groove sidewall and the side plate and suction hole be communicated with the groove of exhaustion plate, the sidewall with air duct of its further groove is near the bottom of bonding tip seat.
A kind of solar battery sheet series welding equipment; Comprise easy care solar battery sheet series welding soldering tip and be used to support the board of easy care solar battery sheet series welding soldering tip; Easy care solar battery sheet series welding soldering tip adopts the electromagnetism mode of heating that solar battery sheet main grid line and welding are welded together; Easy care solar battery sheet series welding soldering tip comprises bonding tip seat, exhaustion plate and side plate, and the top of bonding tip seat is provided with air intake duct, and air intake duct is near an end of bonding tip seat; One suction hole that is communicated with air intake duct is set on the sidewall of bonding tip seat; Side plate is fixed on the sidewall with suction hole of bonding tip seat, and the relative face of the sidewall with suction hole of side plate and bonding tip seat is provided with guiding groove, and an end of guiding groove is communicated with an end of side plate; On opposing two faces of exhaustion plate corresponding respectively be provided with groove, with the suitable guide hump portion of guiding groove; One sidewall of groove is provided with air duct, between exhaustion plate is fixed on bonding tip seat through guide hump portion and guiding groove sidewall and the side plate and suction hole be communicated with the groove of exhaustion plate, the sidewall with air duct of its further groove is near the bottom of bonding tip seat.
Solar battery sheet series welding equipment provided by the invention and easy care solar battery sheet series welding soldering tip; Top at bonding tip seat is provided with air intake duct; One suction hole that is communicated with air intake duct is set on the sidewall of bonding tip seat; Side plate is fixed on the sidewall with suction hole of bonding tip seat, and the relative face of the sidewall with suction hole of side plate and bonding tip seat is provided with guiding groove, on opposing two faces of exhaustion plate corresponding respectively be provided with groove, with the suitable guide hump portion of guiding groove; Exhaustion plate is fixed between the sidewall and side plate of bonding tip seat through guide hump portion and guiding groove; So when exhaustion plate is carried out clean and maintenance, only need direct exhaust gas extraction plate just can exhaustion plate be pulled down from bonding tip seat, then exhaustion plate is cleaned.
Description of drawings:
Accompanying drawing 1 is the structural representation of the easy care solar battery sheet series welding soldering tip of a preferred embodiments.
Accompanying drawing 2 is the exhaustion plate of easy care solar battery sheet series welding soldering tip among Fig. 1 and the blast structural representation of side plate.
Accompanying drawing 3 is the exhaustion plate at another visual angle of easy care solar battery sheet series welding soldering tip among Fig. 1 and the blast structural representation of side plate.
Among the figure: solar battery sheet series welding soldering tip 10, bonding tip seat 11, passage 111, top 113, air intake duct 114, sidewall 115, suction hole 1150, first magnet 1151, bottom 116, electromagnetic flux field concentrator 12, passage 121, induction coil 13, hold down gag 14, exhaustion plate 15, groove 151, sidewall 1510, air duct 1511, guide hump portion 152, second magnet 153, handle hole 154, side plate 16, guiding groove 161, high frequency electric source 20
The specific embodiment:
Solar battery sheet series welding equipment provided by the invention comprises easy care solar battery sheet series welding soldering tip and is used to support the board of easy care solar battery sheet series welding soldering tip that easy care solar battery sheet series welding soldering tip can be done and move up and down on board.Easy care solar battery sheet series welding soldering tip adopts the electromagnetic flux field concentrator, the induction coil that are arranged in the bonding tip seat to produce high frequency magnetic field; In solar battery sheet main grid line and welding, cause " vortex flow "; Produce the required heat of welding process by " vortex flow "; In the bonding tip seat sidewall end easily detachable smoke evacuation thing structure is set, leaves easy care solar battery sheet series welding soldering tip with the waste gases and smoke row that the scaling powder on the welding is produced.
Please be simultaneously referring to like Fig. 1, Fig. 2 and Fig. 3, easy care solar battery sheet series welding soldering tip 10 comprises bonding tip seat 11, electromagnetic flux field concentrator 12, induction coil 13, hold down gag 14, exhaustion plate 15 and side plate 16.
Electromagnetic flux field concentrator 12, induction coil 13 are bonded in the bonding tip seat 11 by the high-temperature plastic perfusion.Corresponding induction coil 13 is inserted at the two ends of electromagnetic flux field concentrator 12.Passage 111, passage 121 that the tight device 14 of voltage supply passes are set on bonding tip seat 11, the electromagnetic flux field concentrator 12; And the passage 111 of bonding tip seat 11, electromagnetic flux field concentrator 12, passage 121 coaxial settings; Induction coil 13 is used for when being connected with high frequency electric source 20, making electromagnetic flux field concentrator 12 to produce high frequency magnetic field; In solar battery sheet main grid line and the welding that on solar battery sheet main grid line, is provided with, cause " vortex flow "; Produce the required heat of welding process by " vortex flow ", be used to make solar battery sheet main grid line, the contacted pressure of welding by hold down gag 14 generations.The passage 111 of bonding tip seat 11 is arranged on the top 113 of bonding tip seat 11; Also be provided with air intake duct 114 on the top 113 of bonding tip seat 11; Air intake duct 114 is near an end of bonding tip seat 11, and the suction hole 1150 that is communicated with air intake duct 114 is set on the sidewall 115 of bonding tip seat 11.
On opposing two faces of exhaustion plate 15 corresponding respectively be provided with groove 151, with the suitable guide hump portion 152 of guiding groove 161; One sidewall 1510 of groove 151 is provided with air duct 1511, and air duct 1511 can be designed to be opened in through hole on the sidewall 1510, also can be designed to the arc groove on sidewall 1510 tops.Exhaustion plate 15 inserts from an end of side plate 16; Between the sidewall 115 that is fixed on bonding tip seat 11 through guide hump portion 152 and guiding groove 161 and the side plate 16 and suction hole 1150 be communicated with the groove 151 of exhaustion plate 15, the sidewall with air duct 1511 of its further groove 151 is near the bottom 116 of bonding tip seat 11.
In this embodiment, the sidewall 115 of bonding tip seat 11 is " T " shape, and side plate 16 adapts with the shape of the sidewall 115 of bonding tip seat 11, and adopts the screw relative fixed between the sidewall 115 of side plate 16 and bonding tip seat 11.The guiding groove 161 of side plate 16, the guide hump portion 152 of exhaustion plate 15 are shaped as rectangle, and the length direction of guiding groove 161, guide hump portion 152 is vertical with hold down gag 14.First magnet 1151 also is set on the sidewall with suction hole 1,150 115 of bonding tip seat 11; On the face that is provided with groove 151 of exhaustion plate 15 with first magnet, 1151 corresponding positions on second magnet 153 that produces attractions with first magnet 1151 is set; So exhaustion plate 15 is closely contacted with the sidewall with suction hole 1,150 115 of bonding tip seat 11 through the attraction between first magnet 1151, second magnet 153; Wherein, What first magnet 1151, second magnet 153 were corresponding flushes with the faces at place separately, and suction hole 1150 leans on an into end that is provided with air intake duct 114 of bonding tip seat 11, and first magnet 1151 is near the other end of bonding tip seat 11.The groove 151 of exhaustion plate 15 is near an end of exhaustion plate 15, and second magnet 153 of exhaustion plate 15 also is provided with the handle hole 154 that supplies operating personnel to firmly grasp near the other end of exhaustion plate 15 on the end that is provided with second magnet 153 of exhaustion plate 15.
Solar battery sheet series welding equipment provided by the invention and easy care solar battery sheet series welding soldering tip 10; Top 113 at bonding tip seat 11 is provided with air intake duct 114; One suction hole 1150 that is communicated with air intake duct 114 is set on the sidewall 115 of bonding tip seat 11; Side plate 16 is fixed on the sidewall with suction hole 1,150 115 of bonding tip seat 11; Side plate 16 is provided with guiding groove 161 with the 115 relative faces of the sidewall with suction hole 1150 of bonding tip seat 11; On opposing two faces of exhaustion plate 15 corresponding respectively be provided with groove 151, with the suitable guide hump portion 152 of guiding groove 161, exhaustion plate 15 is fixed on through guide hump portion 152 and guiding groove 161 between the sidewall 115 and side plate 16 of bonding tip seat 11, so when exhaustion plate 15 is carried out clean and maintenance; Only need direct exhaust gas extraction plate 15 just can exhaustion plate be pulled down from bonding tip seat 11, then exhaustion plate 15 is cleaned.
Claims (10)
1. easy care solar battery sheet series welding soldering tip; This easy care solar battery sheet series welding soldering tip adopts the electromagnetism mode of heating that solar battery sheet main grid line and welding are welded together; This easy care solar battery sheet series welding soldering tip comprises bonding tip seat; It is characterized in that: this easy care solar battery sheet series welding soldering tip also comprises exhaustion plate and side plate, and the top of bonding tip seat is provided with air intake duct, and air intake duct is near an end of bonding tip seat; One suction hole that is communicated with air intake duct is set on the sidewall of bonding tip seat; Side plate is fixed on the sidewall with suction hole of bonding tip seat, and the relative face of the sidewall with suction hole of side plate and bonding tip seat is provided with guiding groove, and an end of guiding groove is communicated with an end of side plate; On opposing two faces of exhaustion plate corresponding respectively be provided with groove, with the suitable guide hump portion of guiding groove; One sidewall of groove is provided with air duct, between exhaustion plate is fixed on bonding tip seat through guide hump portion and guiding groove sidewall and the side plate and suction hole be communicated with the groove of exhaustion plate, the sidewall with air duct of its further groove is near the bottom of bonding tip seat.
2. easy care solar battery sheet series welding soldering tip as claimed in claim 1; It is characterized in that: on the sidewall with suction hole of bonding tip seat first magnet is set; Exhaustion plate be provided with on reeded with the corresponding position of first magnet on second magnet that produces attraction with first magnet is set, so exhaustion plate is closely contacted with the sidewall with suction hole of bonding tip seat through the attraction between first magnet, second magnet.
3. easy care solar battery sheet series welding soldering tip as claimed in claim 2 is characterized in that: suction hole leans on an into end that is provided with air intake duct of bonding tip seat, and first magnet is near the other end of bonding tip seat; The groove of exhaustion plate is near an end of exhaustion plate, and second magnet of exhaustion plate is near the other end of exhaustion plate.
4. easy care solar battery sheet series welding soldering tip as claimed in claim 2 is characterized in that: the handle hole that supplies operating personnel to firmly grasp also is set on the end that is provided with second magnet of exhaustion plate.
5. easy care solar battery sheet series welding soldering tip as claimed in claim 1 is characterized in that: guiding groove, guide hump portion are shaped as rectangle; The sidewall of bonding tip seat is " T " shape, and the shape of the sidewall of side plate and bonding tip seat adapts, and adopts the screw relative fixed between the sidewall of side plate and bonding tip seat.
6. solar battery sheet series welding equipment; Comprise easy care solar battery sheet series welding soldering tip and be used to support the board of easy care solar battery sheet series welding soldering tip; Easy care solar battery sheet series welding soldering tip adopts the electromagnetism mode of heating that solar battery sheet main grid line and welding are welded together; Easy care solar battery sheet series welding soldering tip comprises bonding tip seat; It is characterized in that: easy care solar battery sheet series welding soldering tip comprises that bonding tip seat also comprises exhaustion plate and side plate, and the top of bonding tip seat is provided with air intake duct, and air intake duct is near an end of bonding tip seat; One suction hole that is communicated with air intake duct is set on the sidewall of bonding tip seat; Side plate is fixed on the sidewall with suction hole of bonding tip seat, and the relative face of the sidewall with suction hole of side plate and bonding tip seat is provided with guiding groove, and an end of guiding groove is communicated with an end of side plate; On opposing two faces of exhaustion plate corresponding respectively be provided with groove, with the suitable guide hump portion of guiding groove; One sidewall of groove is provided with air duct, between exhaustion plate is fixed on bonding tip seat through guide hump portion and guiding groove sidewall and the side plate and suction hole be communicated with the groove of exhaustion plate, the sidewall with air duct of its further groove is near the bottom of bonding tip seat.
7. solar battery sheet series welding equipment as claimed in claim 6; It is characterized in that: on the sidewall with suction hole of bonding tip seat first magnet is set; Exhaustion plate be provided with on reeded with the corresponding position of first magnet on second magnet that produces attraction with first magnet is set, so exhaustion plate is closely contacted with the sidewall with suction hole of bonding tip seat through the attraction between first magnet, second magnet.
8. solar battery sheet series welding equipment as claimed in claim 7 is characterized in that: suction hole leans on an into end that is provided with air intake duct of bonding tip seat, and first magnet is near the other end of bonding tip seat; The groove of exhaustion plate is near an end of exhaustion plate, and second magnet of exhaustion plate is near the other end of exhaustion plate.
9. solar battery sheet series welding equipment as claimed in claim 7 is characterized in that: the handle hole that supplies operating personnel to firmly grasp also is set on the end that is provided with second magnet of exhaustion plate.
10. solar battery sheet series welding equipment as claimed in claim 6 is characterized in that: guiding groove, guide hump portion are shaped as rectangle; The sidewall of bonding tip seat is " T " shape, and the shape of the sidewall of side plate and bonding tip seat adapts, and adopts the screw relative fixed between the sidewall of side plate and bonding tip seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210124442.8A CN102615374B (en) | 2012-04-26 | 2012-04-26 | Series welding equipment for solar cell and easily maintained welding head for series welding of solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210124442.8A CN102615374B (en) | 2012-04-26 | 2012-04-26 | Series welding equipment for solar cell and easily maintained welding head for series welding of solar cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102615374A true CN102615374A (en) | 2012-08-01 |
| CN102615374B CN102615374B (en) | 2015-01-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210124442.8A Withdrawn - After Issue CN102615374B (en) | 2012-04-26 | 2012-04-26 | Series welding equipment for solar cell and easily maintained welding head for series welding of solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102615374B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801785A (en) * | 2012-11-10 | 2014-05-21 | 宁夏小牛自动化设备有限公司 | Full-automatic series welding equipment capable of welding four-grid line and five-grid line solar battery pieces |
| CN103831559A (en) * | 2012-11-21 | 2014-06-04 | 宁夏小牛自动化设备有限公司 | Welding strip and battery piece pressing device for solar battery piece series welding head |
| CN106001962A (en) * | 2016-06-17 | 2016-10-12 | 厦门大学 | Solar battery piece welding heating and welding strip fixing method and device |
| CN106493445A (en) * | 2017-01-06 | 2017-03-15 | 无锡市正罡自动化设备有限公司 | Self- steering welding pressing and self- steering welding are reformed mechanism, series welding head and series welding machine |
| CN115055777A (en) * | 2022-07-19 | 2022-09-16 | 盐城工学院 | Non-contact battery piece interconnection strip welding pressing device, welding device and control method of welding device |
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2012
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| CN2497167Y (en) * | 2001-07-31 | 2002-06-26 | 章东红 | Residential flue non-return valve |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801785A (en) * | 2012-11-10 | 2014-05-21 | 宁夏小牛自动化设备有限公司 | Full-automatic series welding equipment capable of welding four-grid line and five-grid line solar battery pieces |
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| CN106001962A (en) * | 2016-06-17 | 2016-10-12 | 厦门大学 | Solar battery piece welding heating and welding strip fixing method and device |
| CN106001962B (en) * | 2016-06-17 | 2018-08-21 | 厦门大学 | A kind of solar battery sheet weld heating and the fixed method and device of welding |
| CN106493445A (en) * | 2017-01-06 | 2017-03-15 | 无锡市正罡自动化设备有限公司 | Self- steering welding pressing and self- steering welding are reformed mechanism, series welding head and series welding machine |
| CN115055777A (en) * | 2022-07-19 | 2022-09-16 | 盐城工学院 | Non-contact battery piece interconnection strip welding pressing device, welding device and control method of welding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102615374B (en) | 2015-01-14 |
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Denomination of invention: Solar cell string welding equipment and easy maintenance solar cell string welding head Effective date of registration: 20210804 Granted publication date: 20150114 Pledgee: China Construction Bank Corporation Yinchuan Xixia sub branch Pledgor: NINGXIA XN AUTOMATION EQUIPMENT Co.,Ltd. Registration number: Y2021640000004 |
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Date of cancellation: 20220216 Granted publication date: 20150114 Pledgee: China Construction Bank Corporation Yinchuan Xixia sub branch Pledgor: NINGXIA XN AUTOMATION EQUIPMENT Co.,Ltd. Registration number: Y2021640000004 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Solar cell string welding equipment and easy maintenance solar cell string welding head Effective date of registration: 20220302 Granted publication date: 20150114 Pledgee: China Construction Bank Corporation Yinchuan Xixia sub branch Pledgor: NINGXIA XN AUTOMATION EQUIPMENT Co.,Ltd. Registration number: Y2022640000001 |
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Date of cancellation: 20220922 Granted publication date: 20150114 Pledgee: China Construction Bank Corporation Yinchuan Xixia sub branch Pledgor: NINGXIA XN AUTOMATION EQUIPMENT Co.,Ltd. Registration number: Y2022640000001 |
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Address after: 750002 No. 6, Baohu West Road, Jinfeng District, Yinchuan, Ningxia Hui Autonomous Region Patentee after: Ningxia Xiaoniu Automation Equipment Co.,Ltd. Address before: 750002 No. 6, Baohu West Road, Jinfeng District, Yinchuan, Ningxia Hui Autonomous Region Patentee before: NINGXIA XN AUTOMATION EQUIPMENT Co.,Ltd. |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150114 Effective date of abandoning: 20240104 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20150114 Effective date of abandoning: 20240104 |