CN114497875A - Lithium cell electricity core vacuum negative pressure structure - Google Patents
Lithium cell electricity core vacuum negative pressure structure Download PDFInfo
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- CN114497875A CN114497875A CN202210101617.7A CN202210101617A CN114497875A CN 114497875 A CN114497875 A CN 114497875A CN 202210101617 A CN202210101617 A CN 202210101617A CN 114497875 A CN114497875 A CN 114497875A
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- fixedly connected
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- exhaust
- exhaust pipe
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
- H01M50/333—Spring-loaded vent valves
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a vacuum negative pressure structure of a lithium battery core, which relates to the technical field of lithium batteries and comprises a battery body, wherein the battery body is fixedly connected with an installation shell; the mounting shell is fixedly connected with the air outlet and the sealing plate mechanism; the mounting shell is fixedly connected with the mounting mechanism; a vacuum pump mechanism is arranged in the mounting mechanism; the mounting shell is fixedly connected with an air outlet hose; the battery body is fixedly connected with the exhaust pipe; the exhaust pipe is provided with a pneumatic mechanism; the exhaust pipe is fixedly connected with the sealing exhaust mechanism and the contact power-on mechanism, the sealing plate mechanism is arranged to protect parts in the installation shell, the installation mechanism is arranged to install and fix vacuum pump mechanisms with different sizes, the pneumatic mechanism is arranged to realize the work of the contact power-on mechanism, the work of the vacuum pump mechanism is realized, the suction operation is completed, the safety of a lithium battery cell is improved, and the functions of the device are enriched.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a vacuum negative pressure structure of a lithium battery core.
Background
With the rapid advance of policy and regulation for reducing carbon emissions, a comprehensive power and electric energy era has come. However, the ignition and explosion events of new energy vehicles and two-wheeled vehicles also occur frequently. If the problem can not be solved from the technical source, the larger the future amount is, the higher the incident rate is. The design of the invention is that the battery cell keeps a vacuum negative pressure state for a long time by additionally arranging the automatic exhauster of the battery cell, and the potential hazards of out-of-control battery cell and explosion hazard caused by self gas production are avoided.
Among the prior art, steel casing and aluminum hull electricity core are equipped with the safety cap, but must have just to open the exhaust under the sufficient internal gas pressure, can use the sensor to discern the inside pressure of battery simultaneously to control the exhaust, but prior art uses electronic components can take place the sensor and damage, makes can not exhaust, and prior art can not realize the quick dismantlement installation change of vacuum pump simultaneously, so prior art has great improvement space.
Disclosure of Invention
The invention provides a vacuum negative pressure structure of a lithium battery cell, which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a lithium battery cell vacuum negative pressure structure comprises a battery body, wherein the battery body is fixedly connected with an installation shell; the mounting shell is fixedly connected with the air outlet and the sealing plate mechanism; the mounting shell is fixedly connected with the mounting mechanism; the vacuum pump mechanism is arranged in the mounting mechanism, and the mounting mechanism is used for mounting and fixing the vacuum pump mechanism; the mounting shell is fixedly connected with an air outlet hose; the battery body is fixedly connected with the exhaust pipe; the exhaust pipe is provided with a pneumatic mechanism; the exhaust pipe is fixedly connected with the sealed exhaust mechanism and the contact power-on mechanism, and the pneumatic mechanism is used for driving the contact power-on mechanism to be in contact power-on and realizing the exhaust of the sealed exhaust mechanism.
As a preferred technical scheme of the invention, the sealing plate mechanism comprises a rotating seat fixed on the mounting shell, the rotating seat is rotatably connected with the sealing plate, the sealing plate is provided with a locking bolt, and the locking bolt is in threaded connection with the mounting shell.
As a preferred technical scheme of the invention, the mounting mechanism comprises a mounting frame fixed on the mounting shell, the mounting frame is in threaded connection with a threaded rod, the threaded rod is fixedly connected with a mounting plate, the mounting plate is in sliding connection with the mounting shell, and one end, far away from the mounting plate, of the threaded rod is fixedly connected with a mounting handle.
As a preferred technical scheme of the invention, the vacuum pump mechanism comprises a pump body, the pump body is fixedly connected with an air inlet pipe and an air outlet pipe, and the pump body is fixedly connected with a first conducting wire and a second conducting wire.
As a preferable technical scheme of the invention, the pneumatic mechanism comprises an installation rod fixed on the exhaust pipe, the installation rod is fixedly connected with a first spring, one end of the first spring, far away from the installation rod, is fixedly connected with a pneumatic block, the pneumatic block is in sliding connection with the exhaust pipe, and the pneumatic block is provided with a first vent hole and a second vent hole.
As a preferred technical scheme of the invention, the sealed exhaust mechanism comprises an exhaust fixing pipe fixed on the exhaust pipe, the exhaust fixing pipe is fixedly connected with a second spring, the second spring is fixedly connected with a spring fixing ring, the spring fixing ring is fixedly connected with an exhaust sliding block, and a third vent hole is formed in the exhaust sliding block.
As a preferable technical scheme of the invention, the contact grounding mechanism comprises a magnetic block in sliding connection with the exhaust pipe, a first conducting wire is fixedly connected with the magnetic block, the pneumatic block is made of a magnetic material, the exhaust pipe is fixedly connected with a grounding fixed plate, a second conducting wire is fixedly connected with the grounding fixed plate, the grounding fixed plate is fixedly connected with a third spring, one end, far away from the grounding fixed plate, of the third spring is fixedly connected with a grounding sliding plate, and the grounding sliding plate is in sliding connection with the exhaust pipe.
The invention has the following advantages: according to the invention, the protection of parts in the installation shell can be realized by arranging the sealing plate mechanism, the installation and fixation of vacuum pump mechanisms with different sizes can be realized by arranging the installation mechanism, the work of the contact motor mechanism can be realized by arranging the pneumatic mechanism, the work of the vacuum pump mechanism is realized, the pumping operation is completed, the drive of the sealing exhaust mechanism can be realized by arranging the pneumatic mechanism, so that the mechanical passive exhaust is completed, the work of the vacuum pump mechanism can be realized by matching with the contact motor mechanism, the normal work of active exhaust when the pressure is overlarge is ensured, the safety of a lithium battery cell is increased, and the functions of the device are enriched.
Drawings
Fig. 1 is a schematic structural diagram of a vacuum negative pressure structure of a lithium battery cell.
Fig. 2 is a partially enlarged view of the area a in fig. 1.
Fig. 3 is a schematic structural diagram of an exhaust slider in a lithium battery cell vacuum negative pressure structure.
In the figure: 1. a battery body; 2. mounting a shell; 3. an air outlet; 4. a seal plate mechanism; 401. a rotating seat; 402. a sealing plate; 403. locking the bolt; 5. an installation mechanism; 501. installing a frame; 502. a threaded rod; 503. mounting a plate; 504. installing a handle; 6. a vacuum pump mechanism; 601. a pump body; 602. an air inlet pipe; 603. an air outlet pipe; 604. a first conductive line; 605. a second conductive line; 7. an air outlet hose; 8. an exhaust pipe; 9. a pneumatic mechanism; 901. mounting a rod; 902. a first spring; 903. a pneumatic block; 904. a first vent hole; 905. a second vent hole; 10. a sealing exhaust mechanism; 1001. an exhaust fixing pipe; 1002. a second spring; 1003. a spring fixing ring; 1004. an exhaust slider; 1005. a third vent hole; 11. a contact charging mechanism; 1101. a magnetic block; 1102. a grounding fixing plate; 1103. a third spring; 1104. provided is a grounding slide plate.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1
Referring to fig. 1-3, a vacuum negative pressure structure of a lithium battery cell includes a battery body 1, wherein the battery body 1 is fixedly connected to a mounting case 2; the mounting shell 2 is fixedly connected with the air outlet 3 and the sealing plate mechanism 4; the mounting shell 2 is fixedly connected with a mounting mechanism 5; the vacuum pump mechanism 6 is arranged in the mounting mechanism 5, and the mounting mechanism 5 is used for mounting and fixing the vacuum pump mechanism 6; the mounting shell 2 is fixedly connected with an air outlet hose 7; the battery body 1 is fixedly connected with an exhaust pipe 8; the exhaust pipe 8 is provided with a pneumatic mechanism 9; the exhaust pipe 8 is fixedly connected with a sealed exhaust mechanism 10 and a contact electrification mechanism 11, and the pneumatic mechanism 9 is used for driving the contact electrification mechanism 11 to carry out contact electrification and realizing exhaust of the sealed exhaust mechanism 10.
The installation mechanism 5 comprises an installation frame 501 fixed on the installation shell 2, the installation frame 501 is in threaded connection with a threaded rod 502, the threaded rod 502 is fixedly connected with an installation plate 503, the installation plate 503 is in sliding connection with the installation shell 2, and one end, far away from the installation plate 503, of the threaded rod 502 is fixedly connected with an installation handle 504.
The vacuum pump mechanism 6 comprises a pump body 601, the pump body 601 is fixedly connected with an air inlet pipe 602 and an air outlet pipe 603, and the pump body 601 is fixedly connected with a first conducting wire 604 and a second conducting wire 605.
The pneumatic mechanism 9 comprises an installation rod 901 fixed on the exhaust pipe 8, the installation rod 901 is fixedly connected with a first spring 902, one end, far away from the installation rod 901, of the first spring 902 is fixedly connected with a pneumatic block 903, the pneumatic block 903 is connected with the exhaust pipe 8 in a sliding mode, and a first vent hole 904 and a second vent hole 905 are formed in the pneumatic block 903. The sealed exhaust mechanism 10 comprises an exhaust fixing pipe 1001 fixed on the exhaust pipe 8, the exhaust fixing pipe 1001 is fixedly connected with a second spring 1002, the second spring 1002 is fixedly connected with a spring fixing ring 1003, the spring fixing ring 1003 is fixedly connected with an exhaust sliding block 1004, and a third vent hole 1005 is arranged on the exhaust sliding block 1004. The contact grounding mechanism 11 comprises a magnetic block 1101 slidably connected with the exhaust pipe 8, a first conducting wire 604 is fixedly connected with the magnetic block 1101, a pneumatic block 903 is made of a magnetic material, the exhaust pipe 8 is fixedly connected with a grounding fixing plate 1102, a second conducting wire 605 is fixedly connected with the grounding fixing plate 1102, the grounding fixing plate 1102 is fixedly connected with a third spring 1103, one end of the third spring 1103 far away from the grounding fixing plate 1102 is fixedly connected with a grounding sliding plate 1104, the grounding sliding plate 1104 is slidably connected with the exhaust pipe 8, specifically, when the battery body 1 exhausts, the pneumatic block 903 is driven to move upwards, so that the first spring 902 is stretched, the pneumatic block 903 can drive the magnetic block 1101 to move upwards at the same time, when the magnetic block 1101 is in contact with the exhaust sliding block 1004, the first conducting wire 604 and the second conducting wire 605 are in contact at the moment, so that the vacuum pump mechanism 6 works to actively exhaust air, and gas can also pass through the first vent 904, and the second ventilation hole 905 enters the position of the exhaust slider 1004, so that the second spring 1002 is stretched, and meanwhile, the third ventilation hole 1005 extends out of the exhaust fixing pipe 1001, and passive exhaust is realized.
Example 2
Referring to fig. 1-3, the other contents of the present embodiment are the same as embodiment 1, except that: the sealing plate mechanism 4 comprises a rotating seat 401 fixed on the mounting shell 2, the rotating seat 401 is rotatably connected with a sealing plate 402, a locking bolt 403 is arranged on the sealing plate 402, and the locking bolt 403 is in threaded connection with the mounting shell 2.
In the implementation process of the invention, firstly, the sealing plate mechanism 4 is opened, then the proper vacuum pump mechanism 6 is placed on the mounting mechanism 5, the vacuum pump mechanism 6 is mounted and fixed through the mounting mechanism 5, then after gas is generated in the battery body 1, the pneumatic mechanism 9 is driven to move, the contact and overlap motor mechanism 11 is driven to move synchronously, then the vacuum pump mechanism 6 works, active exhaust is realized, and meanwhile, the sealing exhaust mechanism 10 is driven to work, and passive exhaust is realized.
According to the invention, the protection of parts in the installation shell 2 can be realized by arranging the sealing plate mechanism 4, the installation and fixation of the vacuum pump mechanisms 6 with different sizes can be realized by arranging the installation mechanism 5, the work of the contact motor mechanism 11 can be realized by arranging the pneumatic mechanism 9, the work of the vacuum pump mechanism 6 is realized, the pumping operation is completed, the drive of the sealed exhaust mechanism 10 can be realized by arranging the pneumatic mechanism 9, the mechanical passive exhaust is completed, the work of the vacuum pump mechanism 6 can be realized by matching with the contact motor mechanism 11, the normal active exhaust work when the pressure is overlarge is ensured, the safety of a lithium battery cell is increased, and the functions of the device are enriched.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A vacuum negative pressure structure of a lithium battery core is characterized by comprising a battery body,
the battery body is fixedly connected with the mounting shell;
the mounting shell is fixedly connected with the air outlet and the sealing plate mechanism;
the mounting shell is fixedly connected with the mounting mechanism;
the vacuum pump mechanism is arranged in the mounting mechanism, and the mounting mechanism is used for mounting and fixing the vacuum pump mechanism;
the mounting shell is fixedly connected with an air outlet hose;
the battery body is fixedly connected with the exhaust pipe;
the exhaust pipe is provided with a pneumatic mechanism;
the exhaust pipe is fixedly connected with the sealed exhaust mechanism and the contact power-on mechanism, and the pneumatic mechanism is used for driving the contact power-on mechanism to be in contact power-on and realizing the exhaust of the sealed exhaust mechanism.
2. The lithium battery cell vacuum negative pressure structure of claim 1, wherein the sealing plate mechanism comprises a rotating seat fixed on the mounting shell, the rotating seat is rotatably connected with the sealing plate, and the sealing plate is provided with a locking bolt which is in threaded connection with the mounting shell.
3. The lithium battery cell vacuum negative pressure structure of claim 1, wherein the mounting mechanism comprises a mounting frame fixed on the mounting shell, the mounting frame is connected with a threaded rod in a threaded manner, the threaded rod is fixedly connected with a mounting plate, the mounting plate is slidably connected with the mounting shell, and one end of the threaded rod, which is far away from the mounting plate, is fixedly connected with a mounting handle.
4. The lithium battery cell vacuum negative pressure structure of claim 3, wherein the vacuum pump mechanism comprises a pump body, the pump body is fixedly connected with the air inlet pipe and the air outlet pipe, and the pump body is fixedly connected with the first lead and the second lead.
5. The lithium battery cell vacuum negative pressure structure of claim 4, wherein the pneumatic mechanism comprises a mounting rod fixed on the exhaust pipe, the mounting rod is fixedly connected with a first spring, one end of the first spring, which is far away from the mounting rod, is fixedly connected with a pneumatic block, the pneumatic block is slidably connected with the exhaust pipe, and the pneumatic block is provided with a first vent hole and a second vent hole.
6. The lithium battery cell vacuum negative pressure structure of claim 5, wherein the sealing exhaust mechanism comprises an exhaust fixing tube fixed on the exhaust pipe, the exhaust fixing tube is fixedly connected with a second spring, the second spring is fixedly connected with a spring fixing ring, the spring fixing ring is fixedly connected with an exhaust slider, and a third vent hole is formed in the exhaust slider.
7. The lithium battery cell vacuum negative pressure structure of claim 6, wherein the contact grounding mechanism comprises a magnetic block slidably connected with the exhaust pipe, the first conducting wire is fixedly connected with the magnetic block, the pneumatic block is made of a magnetic material, the exhaust pipe is fixedly connected with a grounding fixing plate, the second conducting wire is fixedly connected with the grounding fixing plate, the grounding fixing plate is fixedly connected with a third spring, one end of the third spring, far away from the grounding fixing plate, is fixedly connected with a grounding sliding plate, and the grounding sliding plate is slidably connected with the exhaust pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210101617.7A CN114497875B (en) | 2022-01-27 | 2022-01-27 | Vacuum negative pressure structure of lithium battery core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210101617.7A CN114497875B (en) | 2022-01-27 | 2022-01-27 | Vacuum negative pressure structure of lithium battery core |
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| CN114497875A true CN114497875A (en) | 2022-05-13 |
| CN114497875B CN114497875B (en) | 2023-04-28 |
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| CN202210101617.7A Active CN114497875B (en) | 2022-01-27 | 2022-01-27 | Vacuum negative pressure structure of lithium battery core |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201112497Y (en) * | 2007-08-22 | 2008-09-10 | 比亚迪股份有限公司 | Vacuum box used for battery chemical synthesis and battery vacuum chemical synthesis device |
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| CN104527449A (en) * | 2014-08-01 | 2015-04-22 | 成都雅骏新能源汽车科技股份有限公司(中国) | Wadable safe and environment-friendly automotive battery pack system |
| CN105186057A (en) * | 2015-09-28 | 2015-12-23 | 上海索锂科技股份有限公司 | Vacuumizing pre-charging air-exhausting apparatus for high-capacity power lithium batteries |
| CN108075087A (en) * | 2017-11-27 | 2018-05-25 | 安徽中能众诚新能源科技有限公司 | A kind of power lithium battery safety valve |
| CN208240833U (en) * | 2018-06-25 | 2018-12-14 | 安徽相源新能源有限公司 | A kind of apparatus for testing weeping of li battery shell |
| CN110979953A (en) * | 2019-12-27 | 2020-04-10 | 云南荣科机械科技有限公司 | Vacuum aluminum alloy packaging box for storing and transporting special products |
| CN211507793U (en) * | 2019-12-28 | 2020-09-15 | 泰兴市宁辉锂电池有限公司 | Cylindrical lithium battery vacuum sealing device |
| CN214957707U (en) * | 2021-04-07 | 2021-11-30 | 天津广瑞达电子科技有限公司 | Plug wire harness of automobile electric oil pump |
| CN215418482U (en) * | 2021-07-05 | 2022-01-04 | 湖北钛时代新能源有限公司 | Lithium battery vacuum exhaust device |
-
2022
- 2022-01-27 CN CN202210101617.7A patent/CN114497875B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201112497Y (en) * | 2007-08-22 | 2008-09-10 | 比亚迪股份有限公司 | Vacuum box used for battery chemical synthesis and battery vacuum chemical synthesis device |
| DE102012001602A1 (en) * | 2012-01-26 | 2013-08-01 | Daimler Ag | Anode circuit of fuel cell system mounted in vehicle, has recirculation conveying device for anode gas exhaust, which is provided in form of gas jet pump by which fuel flowing to fuel cell is driven as propellant gas stream |
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| CN108075087A (en) * | 2017-11-27 | 2018-05-25 | 安徽中能众诚新能源科技有限公司 | A kind of power lithium battery safety valve |
| CN208240833U (en) * | 2018-06-25 | 2018-12-14 | 安徽相源新能源有限公司 | A kind of apparatus for testing weeping of li battery shell |
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| CN211507793U (en) * | 2019-12-28 | 2020-09-15 | 泰兴市宁辉锂电池有限公司 | Cylindrical lithium battery vacuum sealing device |
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| CN215418482U (en) * | 2021-07-05 | 2022-01-04 | 湖北钛时代新能源有限公司 | Lithium battery vacuum exhaust device |
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| CN114497875B (en) | 2023-04-28 |
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Effective date of registration: 20230403 Address after: No. 201, Gate 3, Building 4, Ya'an Dongli, Ya'an Road, Nankai District, Tianjin, 300000 Applicant after: Chen Xinghan Address before: 050000 003-11, second floor, office building, building a, Zhuye international, No. 9, Changjiang Avenue, high tech Zone, Shijiazhuang City, Hebei Province Applicant before: Hebei Jinsha Technology Co.,Ltd. |
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