CN204088452U - A kind of directly vacuum liquid filling system - Google Patents
A kind of directly vacuum liquid filling system Download PDFInfo
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- CN204088452U CN204088452U CN201420520134.1U CN201420520134U CN204088452U CN 204088452 U CN204088452 U CN 204088452U CN 201420520134 U CN201420520134 U CN 201420520134U CN 204088452 U CN204088452 U CN 204088452U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model relates to vacuum liquid filling technical field, disclose a kind of directly vacuum liquid filling system, comprise vacuum liquid storing barrel, described vacuum liquid storing barrel is connected with topping-up pump, described topping-up pump is double end topping-up pump, also be provided with vacuum liquid filling station, vacuum liquid filling cavity is provided with in described vacuum liquid filling station, at least one group of direct priming device is provided with above described vacuum liquid filling station, the topping-up pump of this vacuum liquid injection system employs double end topping-up pump, thus realize a topping-up pump and support two mechanism for filling liquid work simultaneously, decrease the configuration of topping-up pump, and the first mechanism for filling liquid in described priming device and the second mechanism for filling liquid all utilize topping-up pump to carry out direct fluid injection control, relative to other vacuum liquid filling equipments of prior art, this vacuum liquid injection system structure is simpler, so, control also convenient, be conducive to medium-sized and small enterprises and save manufacturing cost.
Description
Technical field
The utility model relates to vacuum liquid filling technical field, particularly relates to a kind of directly vacuum liquid filling system.
Background technology
Along with the development of science and technology, increasing electronic equipment enters into the live and work of people, such as: bluetooth earphone, intelligent watch or other wearable intelligent equipment etc., these electronic equipments all need to assemble battery, and Soft Roll polymer battery to have volume little, lightweight, energy Ratios is high, fail safe is high, the multiple advantage such as flexible design, be specially adapted to these portable sets, this polymer battery generally has a battery core, aluminum plastic film is rushed hole and be used for accommodating battery core, then battery core is encapsulated, fluid injection and the operation such as to cut out, and in above-mentioned operation, fluid injection refers to and injects the electrolyte in aluminum mold, this operation is even more important, in order to ensure in the process injecting electrolyte, air or aqueous vapor etc. is avoided to enter, often adopt vacuum condition fluid injection.
The vacuum liquid filling structure of prior art is generally: liquid storing barrel connects topping-up pump, then a liquid injection pipe is connected to mechanism for filling liquid by topping-up pump, during work, by topping-up pump, electrolyte is delivered to mechanism for filling liquid and carries out fluid injection, the direct priming device of this vacuum can to carrying out fluid injection to single battery successively, obviously, this efficiency is lower, industry personnel are in order to enhance productivity, the direct priming device being often simultaneously equipped with multiple stage so on a production line carries out fluid injection to multiple battery simultaneously, like this, production line is covered with the direct priming device that some covers are such, take limited production line space, and, enterprise is equipped with multiple devices and improves manufacturing cost, although prior art also has the direct priming device of vacuum that function is more perfect, but the direct priming device of this vacuum has complex structure, PLC need be used to carry out focusing on control program, small-sized production line is processed, control inconvenient, and cost is too high, in view of this, inventor has made improvement for prior art Problems existing.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, provides one directly vacuum liquid filling system, and control is convenient, structure is simple and the advantage of saving manufacturing cost to use this direct vacuum liquid filling system to have.
For achieving the above object, the direct vacuum liquid filling system of one of the present utility model, comprise vacuum liquid storing barrel and the vacuum extractor for extracting described vacuum liquid storing barrel internal gas, described vacuum liquid storing barrel is connected with topping-up pump, described topping-up pump is double end topping-up pump, also be provided with vacuum liquid filling station, vacuum liquid filling cavity is provided with in described vacuum liquid filling station, at least one group of direct priming device is provided with above described vacuum liquid filling station, described direct priming device comprises the first mechanism for filling liquid and second mechanism for filling liquid of the platform fluid injection can stretching into vacuum impregnating sap cavity, described first mechanism for filling liquid is connected with double end topping-up pump respectively by feed tube with the second mechanism for filling liquid.
As preferably, the carrier that described direct priming device also comprises the first fixed head, be slidably connected with the first fixed head and the first cylinder driving described carrier to move up and down, described first mechanism for filling liquid and the second mechanism for filling liquid are arranged at the two ends of carrier respectively, and described first fixed head is fixedly connected with vacuum liquid filling platform.
As preferably, described first mechanism for filling liquid, the second mechanism for filling liquid include liquid feed valve, are connected the injection needle that can stretch into vacuum liquid filling cavity with liquid feed valve, and described liquid feed valve is connected with feed tube.
As preferably, described vacuum liquid filling system also comprises the vacuum chamber for accommodating described double end topping-up pump, and described vacuum chamber is connected with vacuum lead.
As preferably, described vacuum liquid storing barrel is connected with cross valve, is provided with topping-up pump in described vacuum chamber, and described cross valve is connected with topping-up pump respectively by feed tube, and described vacuum liquid filling station correspondence arranges three groups of priming devices.
As preferably, the air bag fixture for retain batteries air bag is provided with in described vacuum liquid filling cavity, described air bag fixture comprises mobile roof support, second fixed head, the drive plate be slidably connected with the second fixed head, described mobile roof support comprises sliding axle, described sliding axle slidably connects left slide and right slide, described left slide is provided with the first clamping limb and the second clamping limb, described right slide is respectively arranged with the 3rd clamping limb coordinated with the first clamping limb and the 4th clamping limb coordinated with the second clamping limb, described drive plate is provided with driving chute, described left slide and right slide are provided with the driving shaft stretching into described driving chute, described drive plate is connected with the second cylinder.
As preferably, in described vacuum liquid filling cavity, the waste liquid be provided with for collecting waste liquid collects mechanism, described waste liquid is collected mechanism and is comprised leading truck, described leading truck slidably connects guide holder, the bottom of described guide holder connects two returnable, described two returnable are all positioned at the below of direct priming device, and the top of described guide holder is provided with drive rod, and described drive rod is connected with the 3rd cylinder for driving described guide holder transverse shifting.
The beneficial effects of the utility model: the direct vacuum liquid filling system of one of the present utility model, comprise vacuum liquid storing barrel, described vacuum liquid storing barrel is connected with topping-up pump, described topping-up pump is double end topping-up pump, also be provided with vacuum liquid filling station, vacuum liquid filling cavity is provided with in described vacuum liquid filling station, at least one group of direct priming device is provided with above described vacuum liquid filling station, the topping-up pump of this vacuum liquid injection system employs double end topping-up pump, thus realize a topping-up pump and support two mechanism for filling liquid work simultaneously, decrease the configuration of topping-up pump, and the first mechanism for filling liquid in described priming device and the second mechanism for filling liquid all utilize topping-up pump to carry out direct fluid injection control, relative to other vacuum liquid filling equipments of prior art, this vacuum liquid injection system structure is simpler, so, control also convenient, be conducive to medium-sized and small enterprises and save manufacturing cost.
Accompanying drawing explanation
Fig. 1 is perspective view of the present utility model.
Fig. 2 is direct priming device structural representation of the present utility model.
Fig. 3 is the retained part structural representation of air bag fixture of the present utility model.
Fig. 4 is the rearview of Fig. 3.
Fig. 5 is the air cylinder driven part-structure schematic diagram of air bag fixture of the present utility model.
Fig. 6 is that waste liquid of the present utility model collects mechanism structure schematic diagram.
Fig. 7 is the rearview of Fig. 6.
Reference numeral comprises: vacuum liquid storing barrel--and 1, cross valve--11, double end topping-up pump--2, vacuum chamber--21, vacuum liquid filling station--3, vacuum liquid filling cavity--31, direct priming device--4, first fixed head--41, carrier--42, first cylinder--43, first mechanism for filling liquid--5, liquid feed valve--51, injection needle--52, second mechanism for filling liquid--6, air bag fixture--7, mobile roof support--71, second fixed head--72, drive plate--73, drive chute--731, sliding axle--74, left slide--75, first clamping limb--751, second clamping limb--752, right slide--76, 3rd clamping limb--761, 4th clamping limb--762, driving shaft--77, second cylinder--78, waste liquid collects mechanism--and 8, leading truck--81, guide holder--82, returnable--83, drive rod--84, 3rd cylinder--85.
Embodiment
Be described in detail below in conjunction with accompanying drawing the utility model.
See Fig. 1 to Fig. 7, a kind of directly vacuum liquid filling system, comprise vacuum liquid storing barrel 1 and the vacuum extractor for extracting described vacuum liquid storing barrel 1 internal gas, described vacuum liquid storing barrel 1 is connected with topping-up pump, described topping-up pump is double end topping-up pump 2, also be provided with vacuum liquid filling station 3, vacuum liquid filling cavity 31 is provided with in described vacuum liquid filling station 3, at least one group of direct priming device 4 is provided with above described vacuum liquid filling station 3, described direct priming device 4 comprises first mechanism for filling liquid 5 and second mechanism for filling liquid 6 that can stretch into vacuum liquid filling station 3 fluid injection, described first mechanism for filling liquid 5 is connected with double end topping-up pump 2 respectively by feed tube 12 with the second mechanism for filling liquid 6, the operation principle of this direct vacuum liquid filling system is: be vacuum environment in vacuum liquid storing barrel 1, this negative pressure of vacuum must not be greater than the negative pressure of vacuum liquid filling cavity 31, usually, electrolyte is extracted out smoothly in order to enable topping-up pump, the true pressure value of vacuum liquid storing barrel 1 is between the 40-60% of vacuum liquid filling cavity 31, electrolyte is first injected in vacuum liquid storing barrel 1, then, described double end topping-up pump 2 extracts electrolyte from vacuum liquid storing barrel 1, because this topping-up pump is bull pump, so, electrolyte can be extracted in vacuum liquid storing barrel 1 by two liquid injection pipes 13, then, be connected with bull pump respectively with two feed tubes 12 again, electrolyte is delivered to the first mechanism for filling liquid 5 and the second mechanism for filling liquid 6 in direct priming device 4, then, first mechanism for filling liquid 5 and the second mechanism for filling liquid 6 directly carry out fluid injection to battery, the topping-up pump of vacuum liquid filling system of the present utility model employs double end topping-up pump 2, thus realize a topping-up pump and support two mechanism for filling liquid work simultaneously, decrease the configuration of topping-up pump, and the first mechanism for filling liquid 5 in described priming device and the second mechanism for filling liquid 6 all utilize topping-up pump to carry out direct fluid injection control, relative to other vacuum liquid filling equipments of prior art, this vacuum liquid injection system structure is more simple, so, control also convenient, be conducive to medium-sized and small enterprises and save manufacturing cost, and because this vacuum liquid injection system is in whole injection process, the inner vacuum value of vacuum liquid storing barrel 1 and vacuum liquid filling cavity 31 keeps homeostasis state, thus makes, and reservoir quantity is more accurate.
In the technical program, the carrier 42 that described direct priming device 4 also comprises the first fixed head 41, be slidably connected with the first fixed head 41 and the first cylinder 43 driving described carrier 42 to move up and down, described first mechanism for filling liquid 5 and the second mechanism for filling liquid 6 are arranged at the two ends of carrier 42 respectively, and described first fixed head 41 is fixedly connected with vacuum liquid filling platform 3.When electrolyte inputs direct priming device 4 from feed tube 12, described first cylinder 43 drives carrier 42 to move down, the injection needle 52 of the first mechanism for filling liquid 5 and the second mechanism for filling liquid 6 is made to stretch into battery, after completing the fluid injection of a Battery pack, first cylinder 43 drives carrier 42 up again, and direct priming device 4 is resetted.
In the technical program, described first mechanism for filling liquid 5, second mechanism for filling liquid 6 includes liquid feed valve 51 and is connected the injection needle 52 that can stretch into vacuum liquid filling cavity 31 with liquid feed valve 51, and described liquid feed valve 51 is connected with feed tube 12.Before electrolyte inputs direct priming device 4 from feed tube 12, at this moment, the first cylinder 43 drives carrier 42 to move down, and make injection needle 52 stretch in the gasbag of battery, open liquid feed valve 51, electrolyte enters into injection needle 52, thus carries out fluid injection; After fluid injection completes, close liquid feed valve 51, exit reset, reciprocation cycle, thus realize the fluid injection of connection.
Due in the technical program, electrolyte must be injected in battery with vacuum environment, in order to pursue the accuracy of fluid injection, prior art is often only focused on putting into row to vacuum liquid filling cavity and fluid injection and is improved, but, in injection process, the key factor of its fluid injection accuracy is exactly the tightness of topping-up pump equipment to also have one to determine, once in extraction electrolyte process, the sealing of topping-up pump goes out reason and leaks, also will make to occur the vacuum leak in vacuum liquid filling cavity 31 and/or vacuum liquid storing barrel 1, make vacuum liquid filling cavity 31 unbalance with the vacuum of vacuum liquid storing barrel 1 inside, the further accuracy affecting fluid injection, so, in the technical program, in order to prevent electrolyte in injection process generation vacuum leak further, improve the accuracy of fluid injection, described vacuum liquid filling system also comprises the vacuum chamber 21 for accommodating described double end topping-up pump 2, described vacuum chamber 21 is connected with vacuum lead, the object of the technical program is: the sealing property of usually different topping-up pumps is all different, and topping-up pump is put in vacuum chamber 21, can avoid causing vacuum leak from the place of topping-up pump, double end topping-up pump 2 is in the vacuum chamber 21 of vacuum, its vacuum chamber 21 can utilize vacuum lead to carry out vacuumizing of vacuum chamber 21, thus makes fluid injection work more stable, reliable.
In order to optimize production line further, reduce relevant Equipments Setting, described vacuum liquid storing barrel 1 is connected with cross valve 11, three double end topping-up pumps 2 are provided with in described vacuum chamber 21, described cross valve 11 is connected with three double end topping-up pumps 2 respectively by feed tube 12, and described vacuum liquid filling platform 3 correspondence arranges three groups of priming devices; In the technical program, a vacuum liquid storing barrel 1 is utilized to connect three double end topping-up pumps 2 by cross valve 11, and, three double end topping-up pumps 2 corresponding connection three groups of priming devices again, the fluid injection while of simultaneously realizing carrying out 6 batteries, relative to prior art, further reduce the configuration of vacuum liquid storing barrel 1, topping-up pump, allow enterprise significantly save manufacturing cost.
In order to realize the fluid injection to battery, the air bag fixture 7 for retain batteries air bag is provided with in described vacuum liquid filling cavity 31, described air bag fixture 7 comprises mobile roof support 71, second fixed head 72, the drive plate 73 be slidably connected with the second fixed head 72, described mobile roof support 71 comprises sliding axle 74, described sliding axle 74 slidably connects left slide 75 and right slide 76, described left slide 75 is provided with the first clamping limb 751 and the second clamping limb 752, described right slide 76 is respectively arranged with the 3rd clamping limb 761 coordinated with the first clamping limb 751 and the 4th clamping limb 762 coordinated with the second clamping limb 752, described drive plate 73 is provided with and drives chute 731, described left slide 75 and right slide 76 are provided with the driving shaft 77 stretching into described driving chute 731, described drive plate 73 is connected with the second cylinder 78.The operation principle of this air bag fixture 7 is: be first placed in by the gasbag of two batteries between the first clamping limb 751 and the 3rd clamping limb 761 and between the first clamping limb 751 and the 3rd clamping limb 761 respectively, second cylinder 78 promotes drive plate 73 and moves down, under the effect driving chute 731, driving shaft 77 drives left slide 75 and right slide 76 to move to the center of mobile roof support 71, because described right slide 76 is respectively arranged with the 3rd clamping limb 761 coordinated with the first clamping limb 751 and the 4th clamping limb 762 coordinated with the second clamping limb 752, that is, two clamping limbs of left slide 75 and right slide 76 are for being crisscross arranged, after left slide 75 and right slide 76 move to the center of mobile roof support 71, first clamping limb 751 and the 3rd clamping limb 761 close disturbs, second clamping limb 752 and the 4th clamping limb 762 close disturbs, thus gasbag is located in therebetween, obviously in order to form safe clamping to gasbag, described first clamping limb 751, first clamping limb 751, 3rd clamping limb 761 and the 4th clamping limb 762 are provided with sucker, after fluid injection completes, second cylinder 78 makes drive plate 73 move up, under the effect driving chute 731, driving shaft 77 drives left slide 75 and right slide 76 to move to the two ends of mobile roof support 71, thus the first clamping limb 751 is separated with the 3rd clamping limb 761, the second clamping limb 752 is separated with the 4th clamping limb 762.
Usually, in injection process, injection needle 52 easily has waste liquid, battery is entered in order to prevent waste liquid, in described vacuum liquid filling cavity 31, the waste liquid be provided with for collecting waste liquid collects mechanism 8, described waste liquid is collected mechanism 8 and is comprised leading truck 81, described leading truck 81 slidably connects guide holder 82, the bottom of described guide holder 82 connects two returnable 83, described two returnable 83 are all positioned at the below of direct priming device 4, the top of described guide holder 82 is provided with drive rod 84, described drive rod 84 is connected with the 3rd cylinder 85 for driving described guide holder 82 transverse shifting, during non-fluid injection, 3rd cylinder 85 drives guide holder 82 to move, two returnable 83 are made to be positioned at the received down waste liquid of injection needle 52, when having collected waste liquid, when injection needle 52 needs fluid injection, 3rd cylinder 85 drives guide holder 82 travelling backwards again, thus injection needle 52 is moved down stretch into the gasbag of battery to carry out fluid injection.This waste liquid is collected mechanism 8 and can be prevented waste liquid from entering battery, avoids having an impact to the performance of battery, and production yields improves.
Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (7)
1. a direct vacuum liquid filling system, comprise vacuum liquid storing barrel (1) and the vacuum extractor for extracting described vacuum liquid storing barrel (1) internal gas, described vacuum liquid storing barrel (1) is connected with topping-up pump, it is characterized in that: described topping-up pump is double end topping-up pump (2), also be provided with vacuum liquid filling station (3), vacuum liquid filling cavity (31) is provided with in described vacuum liquid filling station (3), described vacuum liquid filling station (3) top is provided with at least one group of direct priming device (4), described direct priming device (4) comprises first mechanism for filling liquid (5) and the second mechanism for filling liquid (6) that can stretch into vacuum liquid filling station (3) fluid injection, described first mechanism for filling liquid (5) is connected with double end topping-up pump (2) respectively by feed tube (12) with the second mechanism for filling liquid (6).
2. the direct vacuum liquid filling system of one according to claim 1, it is characterized in that: described direct priming device (4) also comprises the first fixed head (41), the carrier (42) that is slidably connected with the first fixed head (41) and the first cylinder (43) driving described carrier (42) to move up and down, described first mechanism for filling liquid (5) and the second mechanism for filling liquid (6) are arranged at the two ends of carrier (42) respectively, and described first fixed head (41) is fixedly connected with vacuum liquid filling platform (3).
3. the direct vacuum liquid filling system of one according to claim 1, it is characterized in that: described first mechanism for filling liquid (5), the second mechanism for filling liquid (6) include liquid feed valve (51), be connected the injection needle (52) that can stretch into vacuum liquid filling cavity (31) with liquid feed valve (51), described liquid feed valve (51) is connected with feed tube (12).
4. the direct vacuum liquid filling system of one according to claim 1, is characterized in that: also comprise the vacuum chamber (21) for accommodating described double end topping-up pump (2), described vacuum chamber (21) is connected with vacuum lead.
5. the direct vacuum liquid filling system of one according to claim 4, it is characterized in that: described vacuum liquid storing barrel (1) is connected with cross valve (11), three double end topping-up pumps (2) are provided with in described vacuum chamber (21), described cross valve (11) is connected with three double end topping-up pumps (2) respectively by feed tube (12), and described vacuum liquid filling station (3) correspondence arranges three groups of priming devices.
6. the direct vacuum liquid filling system of one according to claim 1, it is characterized in that: in described vacuum liquid filling cavity (31), be provided with the air bag fixture (7) for retain batteries air bag, described air bag fixture (7) comprises mobile roof support (71), second fixed head (72), the drive plate (73) be slidably connected with the second fixed head (72), described mobile roof support (71) comprises sliding axle (74), described sliding axle (74) slidably connects left slide (75) and right slide (76), described left slide (75) is provided with the first clamping limb (751) and the second clamping limb (752), described right slide (76) is respectively arranged with the 3rd clamping limb (761) coordinated with the first clamping limb (751) and the 4th clamping limb (762) coordinated with the second clamping limb (752), described drive plate (73) is provided with and drives chute (731), described left slide (75) and right slide (76) are provided with the driving shaft (77) stretching into described driving chute (731), described drive plate (73) is connected with the second cylinder (78).
7. according to the arbitrary described direct vacuum liquid filling system of one of claim 1-6, it is characterized in that: in described vacuum liquid filling cavity (31), the waste liquid be provided with for collecting waste liquid collects mechanism (8), described waste liquid is collected mechanism (8) and is comprised leading truck (81), described leading truck (81) slidably connects guide holder (82), the bottom of described guide holder (82) connects two returnable (83), described two returnable (83) are all positioned at the below of direct priming device (4), the top of described guide holder (82) is provided with drive rod (84), described drive rod (84) is connected with the 3rd cylinder (85) for driving described guide holder (82) transverse shifting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420520134.1U CN204088452U (en) | 2014-09-11 | 2014-09-11 | A kind of directly vacuum liquid filling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420520134.1U CN204088452U (en) | 2014-09-11 | 2014-09-11 | A kind of directly vacuum liquid filling system |
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| CN204088452U true CN204088452U (en) | 2015-01-07 |
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| CN201420520134.1U Active CN204088452U (en) | 2014-09-11 | 2014-09-11 | A kind of directly vacuum liquid filling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600669A (en) * | 2019-10-21 | 2019-12-20 | 深圳市沅鸿机械有限公司 | Vacuum liquid injection device |
| CN114156613A (en) * | 2021-11-18 | 2022-03-08 | 江西兴锂新能源有限公司 | Electrolyte injection device is used in lithium ion battery production |
-
2014
- 2014-09-11 CN CN201420520134.1U patent/CN204088452U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600669A (en) * | 2019-10-21 | 2019-12-20 | 深圳市沅鸿机械有限公司 | Vacuum liquid injection device |
| CN114156613A (en) * | 2021-11-18 | 2022-03-08 | 江西兴锂新能源有限公司 | Electrolyte injection device is used in lithium ion battery production |
| CN114156613B (en) * | 2021-11-18 | 2023-11-24 | 江西兴锂新能源有限公司 | Electrolyte injection device for lithium ion battery production |
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Owner name: DONGGUAN CHAOYE PRECISION EQUIPMENT CO., LTD. Free format text: FORMER OWNER: CHAOYUAN PRECISION ELECTRONIC DEVICE (DONGGUAN) CO., LTD. Effective date: 20150604 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150604 Address after: 523045 Guangdong province Dongguan City Wanjiang Wanjiang industrial city view Bay Community Industrial Road No. 2 Dongguan ultra precision equipment Co. Ltd. Patentee after: DONGGUAN CHAOYE PRECISION EQUIPMENT CO., LTD. Address before: 523045 Guangdong province Dongguan City Wanjiang Xian Yong Cun Wanjiang industrial city Patentee before: Chaoyuan Precision Electronic Equipment (Dongguan) Co., Ltd. |