CN219393444U - Packaging structure for forming flow battery pile sealing surface - Google Patents
Packaging structure for forming flow battery pile sealing surface Download PDFInfo
- Publication number
- CN219393444U CN219393444U CN202320648687.4U CN202320648687U CN219393444U CN 219393444 U CN219393444 U CN 219393444U CN 202320648687 U CN202320648687 U CN 202320648687U CN 219393444 U CN219393444 U CN 219393444U
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- China
- Prior art keywords
- flow battery
- packaging
- packaging shell
- sealing surface
- battery pile
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- 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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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 109
- 238000007789 sealing Methods 0.000 title claims abstract description 51
- 239000000463 material Substances 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 description 33
- 239000000243 solution Substances 0.000 description 20
- 238000012423 maintenance Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 239000008151 electrolyte solution Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a packaging structure for forming a sealing surface of a flow battery pile, which comprises the following steps: the packaging shell is used for accommodating the flow battery pile; the through holes are arranged on the upper surface of the packaging shell at intervals and used for injecting FRPP solution so as to form a sealing surface on the surface of the flow battery pile; the solution drainage channels are arranged on the inner side wall of the packaging shell, each solution drainage channel is communicated with at least one through hole and used for guiding the injected FRPP solution to a designated area in the packaging shell; the fixing pieces are arranged in the packaging shell at intervals and used for limiting the position of the flow battery pile in the packaging shell and ensuring that a uniform sealing surface is formed on the surface of the flow battery pile; the packaging cover plate is used for forming a sealing space with the packaging shell; the two side surfaces of the flow battery stack, which are close to the packaging cover plate, are tightly attached to the packaging shell, and the other surfaces are kept at a certain distance from the packaging shell through the fixing piece. The utility model has simple structure and easy realization, and can solve a plurality of problems existing in the prior art.
Description
Technical Field
The utility model belongs to the technical field of batteries, and particularly relates to a packaging structure for forming a sealing surface of a flow battery pile.
Background
The rapid development of renewable energy represented by wind energy, solar energy and water energy and the instability and discontinuity of the renewable energy source generate serious impact on a power grid, so that a large-scale efficient energy storage technology becomes a key technology for realizing the large-scale utilization of renewable energy power generation. Among the energy storage technologies, the electrochemical energy storage technology is the most potential energy storage mode due to the characteristics of flexibility, rapidness and no special field requirements.
Currently, the flow cell stacks most widely used are typically assembled in the form of a filter press. The two ends of the pile are made of steel or aluminum metal end plates, a counter-pulling screw rod is arranged between the two end plates, and the two ends of the counter-pulling screw rod respectively penetrate through the two end plates and are fixed with the nuts through the screw rods. The single cell in the liquid cell stack comprises a negative bipolar plate, a sealing gasket, a negative electrode frame, a negative electrode, an ion conducting membrane, a positive electrode frame, a sealing gasket and a positive bipolar plate. The sealing gasket inside the single battery is made of a rubber (PP) material, and is fastened by a pair of pull screws and nuts at two ends of the liquid battery stack, so that the whole sealing effect of the liquid battery stack is achieved.
However, since the gasket is prone to aging over time, a risk of leakage may result; the tightening mode of the opposite-pulling screw and the nut is adopted, the torque maintenance is needed to be carried out on the nut at the later stage, so that electrolyte solution omission caused by loosening of the nut can be prevented, the production cost of the product in the prior art is high, and the later maintenance cost is high; meanwhile, by adopting a fastening mode of the opposite-pulling screw and the nut, the flow field frame, the internal bipolar plate and the like are easy to be greatly compressed and deformed, so that the distribution uniformity of electrolyte solution in the electrode is further affected, the electrolyte solution is even attractive due to extrusion overflow, the repair is needed, and the time cost is consumed.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides a packaging structure for forming a sealing surface of a flow battery pile. The technical problems to be solved by the utility model are realized by the following technical scheme:
the embodiment of the utility model provides a packaging structure for forming a sealing surface of a flow battery pile, which comprises the following steps:
the packaging shell is used for accommodating the flow battery pile;
the through holes are arranged on the upper surface of the packaging shell at intervals and used for injecting FRPP solution so as to form a sealing surface on the surface of the flow battery pile;
the solution drainage channels are arranged on the inner side wall of the packaging shell, are communicated with at least one through hole and are used for guiding the injected FRPP solution to a designated area in the packaging shell;
the fixing pieces are arranged in the packaging shell at intervals and used for limiting the position of the flow battery pile in the packaging shell and ensuring that a uniform sealing surface is formed on the surface of the flow battery pile;
the packaging cover plate is used for forming a sealing space with the packaging shell;
the flow battery pile is close to the two side surfaces of the packaging cover plate and clings to the packaging shell, and the other side surfaces are kept at a certain distance from the packaging shell through the fixing piece.
In one embodiment of the present utility model, the number of through holes is 4, and the through holes are disposed at four corners of the upper surface of the package case at intervals.
In one embodiment of the utility model, each fixing member is fixedly arranged in the packaging shell at intervals.
In one embodiment of the present utility model, the sliding rail is further comprised, and the sliding rail is disposed between adjacent fixing members, and each of the fixing members moves in a horizontal or vertical direction along the sliding rail.
In one embodiment of the present utility model, the number of the fixing members is 4, and the fixing members are disposed at four corners in the package case at intervals.
In one embodiment of the utility model, the area size formed by all the fixing pieces is correspondingly smaller than the size of the flow battery pile.
In one embodiment of the present utility model, a clamping groove is further provided on the sliding rail, for fixing the moving fixing member.
In one embodiment of the present utility model, the upper surface of the package case is a detachable structure.
In one embodiment of the present utility model, the package shell, the fixing member and the package cover plate are all made of a hard material resistant to high temperature and acid and alkali.
The utility model has the beneficial effects that:
the packaging structure for forming the sealing surface of the flow battery pile, provided by the utility model, has a simple structure and is easy to realize, and the specific structure comprises: the packaging shell is used for accommodating the flow battery pile; the through holes are arranged on the upper surface of the packaging shell at intervals and used for injecting FRPP solution so as to form a sealing surface on the surface of the flow battery pile; the solution drainage channels are arranged on the inner side wall of the packaging shell, are communicated with at least one through hole and are used for guiding the injected FRPP solution to a designated area in the packaging shell; the fixing pieces are arranged in the packaging shell at intervals and used for limiting the position of the flow battery pile in the packaging shell and ensuring that a uniform sealing surface is formed on the surface of the flow battery pile; the packaging cover plate is used for forming a sealing space with the packaging shell; the two side surfaces of the flow battery stack, which are close to the packaging cover plate, are tightly attached to the packaging shell, and the other surfaces are kept at a certain distance from the packaging shell through the fixing piece. The utility model can well solve a plurality of problems existing in the prior art: by adopting the packaging structure provided by the utility model, the end plates at two ends of the liquid flow battery pile are removed, six sides of the liquid flow battery pile are packaged and closed by adopting the proposed outer packaging structure, a large number of self-tightening devices such as screw nuts and the like are not needed, the structure of the liquid flow battery pile is simplified, and the production and manufacturing cost of the liquid flow battery pile product is reduced; by adopting the packaging structure provided by the utility model, the loosening condition of the bolts and nuts does not occur, and the electrolyte solution leakage risk caused by adopting the traditional self-tightening sealing structure is avoided; the packaging structure provided by the utility model can realize the sealing of the liquid battery pile integrally at one time, and the sealing of the liquid battery pile is maintained by fastening the screw and the nut, so that the later operation and maintenance content is reduced, and the later operation and maintenance cost is reduced; by adopting the packaging structure provided by the utility model, the design of the liquid battery pile with the screw and the nuts removed is completed, the assembly difficulty of the liquid battery pile is reduced, the packaging procedure and flow outside the liquid battery pile are simplified, and the volume of the liquid battery pile is reduced; the packaging structure provided by the utility model is adopted to ensure the structural safety problem of the working conditions of the liquid battery pile at different temperatures, and the reason is that the existing common PP material becomes soft and deformed under the action of internal stress or pre-stress, and the brittle fracture is increased when the temperature is too low.
The present utility model will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic diagram of a package structure for forming a sealing surface of a flow battery stack according to an embodiment of the present utility model.
Reference numerals illustrate:
1-a first side; 2-a second side; 3-through holes; 4-packaging a cover plate; 5-import; 6-solution drainage channel.
Detailed Description
The present utility model will be described in further detail with reference to specific examples, but embodiments of the present utility model are not limited thereto.
Through the study of the inventor, a plurality of problems may exist in the flow battery stack processed in the prior art, in order to avoid the problems and realize a liquid battery stack with more application prospects, referring to fig. 1, an embodiment of the utility model provides a packaging structure for forming a sealing surface of the flow battery stack, which comprises:
the packaging shell is used for accommodating the flow battery pile;
the through holes 3 are arranged on the upper surface of the packaging shell at intervals and are used for injecting glass fiber reinforced polypropylene (Fiber Reinforced Polypropylene, FRPP) solution so as to form a sealing surface on the surface of the flow battery pile;
the solution drainage channels 6 are arranged on the inner side wall of the packaging shell, and each solution drainage channel 6 on the inner side wall is communicated with at least one through hole 3 and used for guiding the injected FRPP solution to a designated area in the packaging shell;
the fixing pieces are arranged in the packaging shell at intervals and used for limiting the position of the flow battery pile in the packaging shell and ensuring that a uniform sealing surface is formed on the surface of the flow battery pile;
a packing cover plate 4 for forming a sealed space with the packing case;
the two side surfaces of the flow battery stack, which are close to the packaging cover plate 4, are tightly attached to the packaging shell, and the other side surfaces are kept at a certain distance from the packaging shell through fixing pieces. For example, as shown in fig. 1, the first side 1 and the second side 2 are both tightly attached to the package, the other surfaces (including the surface where the package cover 4 is located) are not tightly attached to the package, and a certain distance is kept between the package and the package by the fixing member, and the gap is left for filling the injected FRPP solution so as to form sealing surfaces on the surfaces other than the first side 1 and the second side 2.
The embodiment of the utility model provides an alternative scheme, wherein the number of the through holes 3 is 4, and the through holes are arranged at four corners of the upper surface of the packaging shell at intervals as shown in fig. 1. The shape of the through hole is not limited, and may be a circular structure as shown in fig. 1.
The embodiment of the utility model provides an alternative scheme, wherein each fixing piece is fixedly arranged in the packaging shell at intervals. The embodiment of the utility model provides an alternative scheme, wherein the number of the fixing pieces is 4, and the fixing pieces are arranged at four corners in the packaging shell at intervals. The fixing piece is designed, so that the position of the liquid battery pile on the packaging shell can be fixed, and on the other hand, the distance between each surface of the liquid battery pile and the packaging shell can be controlled through the fixing piece, and a sealing surface with uniform thickness and the like can be formed on the surface of the liquid battery pile.
The embodiment of the utility model provides an alternative scheme, wherein the size of the area formed by all the fixing pieces is smaller than that of the flow battery pile, namely if the area formed by the fixing pieces is of a rectangular structure with the length of a1 and the width of b1, the flow battery pile is of a rectangular structure with the length of a2 and the width of b2, the corresponding a1 is smaller than a2, and the corresponding b1 is smaller than b2.
In order to adapt to the packaging of the flow battery stacks with more sizes, the embodiment of the utility model provides an alternative scheme, the packaging structure also comprises a sliding rail, the sliding rail is arranged between adjacent fixing pieces, each fixing piece moves along the horizontal or vertical direction of the sliding rail, the distance between the fixing pieces can be effectively adjusted, the forming area of the fixing pieces is matched with the size of the loaded flow battery stack, and the fact that the flow battery stacks with different sizes are required to be designed with corresponding packaging structures is avoided, so that the manufacturing cost of products is reduced.
The embodiment of the utility model provides an alternative scheme, wherein the sliding rail is also provided with a clamping groove for fixing the moving fixing piece.
The embodiment of the utility model provides an alternative scheme, wherein the upper surface of the packaging shell is of a detachable structure. Therefore, the moving condition of the fixing piece in the packaging shell can be observed and controlled globally, and the liquid current pile and the packaging shell keep a certain distance by moving the fixing piece, so that the area forming the sealing surface is reserved.
It should be noted that, all surfaces of the package shell of the embodiment of the present utility model may be designed as a detachable structure, and according to the size of the liquid battery stack and the thickness of the sealing surface formed, the liquid current stack and the package shell are selectively kept at a certain required distance by moving the fixing member and/or all surfaces of the package shell, and the predetermined distance forms the area of the sealing surface.
The embodiment of the utility model provides an alternative scheme, wherein the packaging shell, the fixing piece and the packaging cover plate 4 are all made of hard high-temperature-resistant acid-alkali-resistant materials, such as high-temperature-resistant acid-alkali-resistant plastics, and also high-temperature-resistant acid-alkali-resistant metals.
Although not shown here to provide a schematic illustration of the structure within the enclosure, the description above is sufficient to clarify the design of each component within the enclosure and its functioning.
The process of forming the flow cell stack sealing surface specifically by using the packaging structure shown in fig. 1 is as follows:
and placing the flow battery pile into the packaging shell from the inlet 5, closing the outer packaging cover plate 4, and then compressing and locking the first side surface 1 and the second side surface 2 with the flow battery pile without leaving gaps. The FRPP (boron-free) solution is heated to 220 ℃ 2280 ℃, enters the packaging shell through the through hole 3, is drained to the areas except the first side surface 1 and the second side surface 2 through the solution drainage channel 6, is uniformly distributed on the inner side wall of the packaging shell through the solution drainage channels 6 as shown in the figure 1, and is taken out from the liquid cell stack for use in the subsequent process flow when the FRPP solution is kept stand in a solidification state (not rapidly cooled).
In summary, the package structure for forming the sealing surface of the flow battery stack provided by the embodiment of the utility model has a simple structure and is easy to be implemented, and the specific structure comprises: the packaging shell is used for accommodating the flow battery pile; the through holes 3 are arranged on the upper surface of the packaging shell at intervals and are used for injecting FRPP solution so as to form a sealing surface on the surface of the flow battery pile; the solution drainage channels 6 are arranged on the side walls of the packaging shell, and the solution drainage channel 6 of each side wall is communicated with at least one through hole 3 and used for draining the injected FRPP solution to a designated area in the packaging shell; the fixing pieces are arranged in the packaging shell at intervals and used for limiting the position of the flow battery pile in the packaging shell and ensuring that a uniform sealing surface is formed on the surface of the flow battery pile; a packing cover plate 4 for forming a sealed space with the packing case; the flow battery pile is close to the two side surfaces (a first side surface 1 and a second side surface 2) of the packaging cover plate 4 and clings to the packaging shell, and the other side surfaces are kept at a certain distance from the packaging shell through fixing pieces. The embodiment of the utility model can well solve a plurality of problems existing in the prior art: by adopting the packaging structure provided by the embodiment of the utility model, the end plates at two ends of the liquid flow battery pile are removed, six sides of the liquid flow battery pile are packaged and closed by adopting the proposed outer packaging structure, and a large number of self-tightening devices such as screw nuts and the like are not needed, so that the structure of the liquid flow battery pile is simplified, and the production and manufacturing cost of liquid flow battery pile products is reduced; by adopting the packaging structure provided by the embodiment of the utility model, the loosening condition of the bolts and nuts does not occur, and the electrolyte solution leakage risk caused by adopting the traditional self-tightening sealing structure is avoided; the packaging structure provided by the embodiment of the utility model can realize the sealing of the liquid battery pile integrally at one time, and the sealing of the liquid battery pile is maintained by fastening the screw and the nut, so that the later operation and maintenance content is reduced, and the later operation and maintenance cost is reduced; by adopting the packaging structure provided by the embodiment of the utility model, the design of the liquid battery pile with the screw and the nuts removed is completed, the assembly difficulty of the liquid battery pile is reduced, the packaging procedure and flow outside the liquid battery pile are simplified, and the volume of the liquid battery pile is reduced; the packaging structure provided by the embodiment of the utility model ensures the structural safety problem of the working conditions of the liquid battery pile at different temperatures, because the existing common PP material becomes soft and deformed under the action of internal stress or pre-stress, and the brittle fracture is increased when the temperature is too low.
In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Although the utility model is described herein in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed utility model, from a study of the specification and the drawings. In the description, the word "comprising" does not exclude other elements or steps, and the "a" or "an" does not exclude a plurality. Some measures are described in mutually different embodiments, but this does not mean that these measures cannot be combined to produce a good effect.
The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.
Claims (9)
1. A packaging structure for forming a flow cell stack sealing surface, comprising:
the packaging shell is used for accommodating the flow battery pile;
the through holes are arranged on the upper surface of the packaging shell at intervals and used for injecting FRPP solution so as to form a sealing surface on the surface of the flow battery pile;
the solution drainage channels are arranged on the inner side wall of the packaging shell, are communicated with at least one through hole and are used for guiding the injected FRPP solution to a designated area in the packaging shell;
the fixing pieces are arranged in the packaging shell at intervals and used for limiting the position of the flow battery pile in the packaging shell and ensuring that a uniform sealing surface is formed on the surface of the flow battery pile;
the packaging cover plate is used for forming a sealing space with the packaging shell;
the flow battery pile is close to the two side surfaces of the packaging cover plate and clings to the packaging shell, and the other side surfaces are kept at a certain distance from the packaging shell through the fixing piece.
2. The package structure for forming a sealing surface of a flow battery stack according to claim 1, wherein the number of through holes is 4, and the through holes are disposed at four corners of an upper surface of the package case at intervals.
3. The package structure for forming a sealing surface of a flow battery stack of claim 1, wherein each fixture is fixedly disposed within the package shell at intervals.
4. The package structure for forming a sealing surface of a flow battery stack according to claim 1, further comprising a slide rail provided between adjacent fixing members, each of the fixing members being moved in a horizontal or vertical direction along the slide rail.
5. The package structure for forming a sealing surface of a flow battery stack according to claim 3 or 4, wherein the number of the fixing members is 4, and the fixing members are disposed at four corners in the package case at intervals.
6. The package structure for forming a flow cell stack sealing surface according to claim 3 or 4, wherein the area size formed by all fixing members is smaller than the size of the flow cell stack.
7. The packaging structure for forming a sealing surface of a flow battery stack according to claim 4, wherein a clamping groove is further formed in the sliding rail and used for fixing the moving fixing piece.
8. The package structure for forming a sealing surface of a flow battery stack according to claim 1, wherein an upper surface of the package case is a detachable structure.
9. The packaging structure for forming a sealing surface of a flow battery stack according to claim 1, wherein the packaging shell, the fixing piece and the packaging cover plate are all made of hard high-temperature-resistant acid-alkali-resistant materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320648687.4U CN219393444U (en) | 2023-03-28 | 2023-03-28 | Packaging structure for forming flow battery pile sealing surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320648687.4U CN219393444U (en) | 2023-03-28 | 2023-03-28 | Packaging structure for forming flow battery pile sealing surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219393444U true CN219393444U (en) | 2023-07-21 |
Family
ID=87164530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320648687.4U Active CN219393444U (en) | 2023-03-28 | 2023-03-28 | Packaging structure for forming flow battery pile sealing surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219393444U (en) |
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2023
- 2023-03-28 CN CN202320648687.4U patent/CN219393444U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A packaging structure for forming the sealing surface of a flow battery stack Granted publication date: 20230721 Pledgee: Jiangsu Gaoyou Rural Commercial Bank Co.,Ltd. Pledgor: Yangzhou Xirong Energy Storage Technology Co.,Ltd. Registration number: Y2024980039312 |