Nitrogen buffer storage station
By designing a nitrogen buffer station within the photovoltaic workshop buffer station and using the first and second ventilation components to input high-concentration nitrogen, the problems of cell oxidation and impurity ingress were solved, achieving efficient protection and quality assurance for the cells.
Patent Information
- Application Number
- CN202520128216.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-01-20
AI Technical Summary
When storing solar cells in existing photovoltaic workshop buffer stations, the stored cells are easily oxidized by the air. Furthermore, the constant opening and closing of the station doors introduces external dust and other impurities, disrupting the stable environment within the buffer station and affecting product quality.
A nitrogen buffer station was designed, which uses a first air exchange component and a second air exchange component to input high-concentration nitrogen into the buffer space and transition space respectively, and controls the opening and closing of the channel opening through a sealed door to ensure that the nitrogen content is always kept above the preset value to prevent oxidation and impurities from entering.
It effectively prevents cell oxidation, maintains stable nitrogen content within the buffer station, avoids the entry of external impurities, enhances the protective effect of the buffer station, and ensures product quality.
Smart Images
Figure CN223816396U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to photovoltaic cell storage technical field especially is a nitrogen buffer station. BACKGROUND
[0002] In the production and manufacturing field of solar cells, the storage of cell pieces is an important link in its production and manufacturing. In this process, the cell pieces need to be placed in the buffer device for storage and waiting for the next processing procedure. In order to prevent the cell pieces from being polluted after cleaning and texturing in the photovoltaic workshop, the cell pieces need to be placed in the buffer station for storage to avoid the cell pieces from being dirty in the air and affecting the product quality.
[0003] The existing way of storing cell pieces in the photovoltaic workshop is to open the station door of the buffer station and place the cell pieces in the buffer station. Not only the air in the buffer station is easy to oxidize the stored cell pieces, but also the air in the buffer station will be frequently convection with the outside air in the process of continuously opening and closing the station door, which brings the dust and other impurities in the outside air into the buffer station, resulting in the stable environment in the buffer station being destroyed and further resulting in the protection effect of the buffer station being reduced. SUMMARY
[0004] To solve the above technical problems, the utility model provides a nitrogen buffer station, which comprises:
[0005] The buffer mechanism comprises a buffer station body which is enclosed to form a buffer space, and a first air exchange component which is arranged on the buffer station body and is used for making the nitrogen content in the buffer space reach the standard.
[0006] The transition mechanism comprises a transition warehouse which is arranged on one side of the buffer station body and is enclosed to form a transition space, and a second air exchange component which is arranged on the transition warehouse and is used for making the nitrogen content in the transition space consistent with that in the buffer space.
[0007] In an embodiment of the utility model, the first air exchange component comprises a first air inlet unit and a first air outlet unit.
[0008] In an embodiment of the utility model, the first air inlet pipe extends in the vertical direction in the buffer space, and the pipe wall of the first air inlet pipe is spaced apart in the vertical direction and is provided with a plurality of first air inlet holes.
[0009] In one embodiment of the present application, the first air inlet pipe and the first air outlet pipe are respectively provided with a first valve and a second valve for controlling the flow rate.
[0010] In one embodiment of the present application, the second air exchange assembly comprises a second air inlet unit and a second air outlet unit; the second air inlet unit comprises a second air inlet pipe with one end connected to an external positive pressure nitrogen source and the other end penetrating the transition chamber; the second air outlet unit comprises a second air outlet pipe with one end connected to the outside and the other end penetrating the transition chamber and being connected to the transition space.
[0011] In one embodiment of the present application, the second air inlet pipe and the second air outlet pipe are respectively provided with a third valve and a fourth valve for controlling the flow rate.
[0012] In one embodiment of the present application, the positive pressure nitrogen sources connected to the first air inlet unit and the second air inlet unit are independent of each other.
[0013] In one embodiment of the present application, the buffer station body is provided with a first gas detection unit in the buffer space, and the transition chamber is provided with a second gas detection unit in the transition space.
[0014] In one embodiment of the present application, the first air inlet unit is arranged at the buffer station body close to the first passage opening, and the first air outlet unit is arranged at the buffer station body away from the first passage opening.
[0015] In one embodiment of the present application, the second air inlet unit is arranged at the transition chamber close to the second passage opening, the second air inlet pipe extends in the vertical direction in the transition space, and the pipe wall of the second air inlet pipe is spaced apart in the vertical direction to form a plurality of second air inlet holes.
[0016] The above technical solution of the present application has the following advantages compared with the prior art:
[0017] The utility model discloses a nitrogen gas buffer station, open the airtight door at second passageway mouth, through second passageway mouth and put the product to be buffered into transition space, and close the airtight door at second passageway mouth, make transition space keep closed state. The air in transition space is discharged by using second air exchange component, thereby making the nitrogen content in transition space promote to be consistent with buffer space. Make transition space and buffer space communicate by opening the airtight door at third passageway mouth, make the product to be buffered can enter buffer space through first passageway mouth, and close the airtight door at third passageway mouth. First air exchange component is used for input high concentration nitrogen gas and discharge the buffer station gas with too high oxygen content, make the nitrogen content in buffer space always greater than or equal to preset value to prevent the product to be buffered oxidation. Through above setting, when taking and placing the battery piece, do not need to ventilate the buffer station, and the outside oxygen and impurity can not enter the buffer station, can improve the protection effect of buffer station, and guarantee the nitrogen content in buffer station to reach the standard. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to make the content of the utility model more easily be clearly understood, the following according to the specific embodiment of the utility model and combining with the drawings, the utility model is further detailed, wherein
[0019] Figure 1 It is the structure schematic drawing of transition mechanism and buffer mechanism;
[0020] Figure 2 It is the sectional view of transition mechanism and part buffer mechanism;
[0021] Figure 3 It is Figure 2 The enlarged view of A in Fig. 1 is shown in Fig. 2;
[0022] Figure 4 It is Figure 2 The enlarged view of B in Fig. 1 is shown in Fig. 3;
[0023] Figure 5 It is the structure schematic drawing of transition mechanism;
[0024] Figure 6 It is the sectional view of transition mechanism.
[0025] EXPLANATION OF THE DRAWINGS IN THE SPECIFICATION:
[0026] 1, buffer mechanism;11, buffer station body;12, first air inlet unit;121, first air inlet pipe;122, first valve;123, first air inlet hole;124, first through hole;13, first air outlet unit;131, first air outlet pipe;132, second valve;133, second through hole;14, first passageway mouth;15, buffer space;
[0027] 2, transition mechanism; 21, transition bin; 22, second air inlet unit; 221, second air inlet pipe; 222, third valve; 223, third through hole; 224, second air inlet hole; 23, second air outlet unit; 231, second air outlet pipe; 232, fourth valve; 233, fourth through hole; 24, second passage opening; 25, third passage opening; 26, sealing door; 27, transition space. DETAILED DESCRIPTION
[0028] The utility model will be further explained in connection with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.
[0029] As a reference, the direction of X axis is defined as the first horizontal direction, the direction of Y axis is defined as the second horizontal direction, and the direction of Z axis is defined as the vertical direction. Figure 1 Referring to
[0030] , Figures 1-6 The utility model discloses a nitrogen buffer station, which comprises a buffer mechanism 1 and a transition mechanism 2.
[0031] The buffer mechanism 1 comprises a buffer station body 11, which encloses a buffer space 15. The length direction of the buffer station body 11 extends along the first horizontal direction. The buffer station body 11 is provided with a first passage opening 14 for the passage of products to be buffered. The products to be buffered pass through the first passage opening 14 and enter or exit the buffer space 15 along the first horizontal direction. The buffer station body 11 is provided with a first air exchange assembly for achieving the standard nitrogen content in the buffer space 15. Specifically, the first air exchange assembly comprises a first air inlet unit 12 and a first air outlet unit 13. The inert gas such as nitrogen is input through the first air inlet unit 12 into the buffer space 15, thereby providing a suitable storage environment for the products to be buffered and preventing the oxidation of battery pieces to prolong the storage time. The first air inlet unit 12 is arranged at the buffer station body 11 close to the first passage opening 14, and the first air outlet unit 13 is arranged at the buffer station body 11 away from the first passage opening 14. Since the first air inlet unit 12 is arranged close to the first passage opening 14, the nitrogen blown out by the first air inlet unit 12 forms a positive pressure at the first passage opening 14, thereby preventing oxygen-containing air from entering the buffer space 15 through the first passage opening 14.
[0032] Referring to Figure 2 , Figure 3 , Figure 4The first air inlet unit 12 includes a first air inlet pipe 121, one end of which is connected to the external positive pressure nitrogen source and the other end of which is arranged through one side of the buffer station body 11. The one side of the buffer station body 11 is provided with a first through hole 124 which is adapted to the first air inlet pipe 121. The first air inlet pipe 121 is in sealing connection with the buffer station body 11 at the first through hole 124. The first air outlet unit 13 includes a first air outlet pipe 131, one end of which is connected to the external environment and the other end of which is arranged through the other side of the buffer station body 11 and is connected to the buffer space 15. The other side of the buffer station body 11 is provided with a second through hole 133 which is adapted to the first air outlet pipe 131. The first air outlet pipe 131 is in sealing connection with the second through hole 133. The positive pressure nitrogen source configured by the first air inlet unit 12 is defined as the first nitrogen source. The nitrogen gas blown by the first nitrogen source is input into the buffer space 15 through the first air inlet pipe 121, so that the nitrogen content in the buffer station is kept above the standard line. In order to detect the nitrogen content in the buffer station, the buffer station body 11 is provided with a first gas detection unit (not shown in the figure) in the buffer space 15. For this embodiment, the inert gas introduced is nitrogen, and the first gas detection unit is a nitrogen detection sensor which can detect the nitrogen content in the buffer station in real time. In order to increase the nitrogen content increasing rate, the first air inlet unit 12 and the first air outlet unit 13 are arranged at both ends of the buffer station body 11 along the length direction / first horizontal direction of the buffer station body 11, so that the nitrogen gas passes through the entire buffer space 15 along the length direction of the buffer station body 11 and the airflow can be kept stable. In actual application, the first air inlet unit 12 and the first air outlet unit 13 can also be arranged along the width direction / second horizontal direction or the diagonal direction of the buffer station body 11. In addition, when the buffer station has gaps or loopholes, the nitrogen gas is continuously injected through the first air inlet pipe 121, so that the buffer space 15 can be kept in positive pressure and the external oxygen-containing air can be prevented from entering the buffer space 15 through the loopholes or gaps.
[0033] In the embodiment, the buffer station body 11 is provided with a plurality of layers of material conveying units for buffering, and the conveying units adopt a belt conveying structure. Due to the existence of the plurality of layers of conveying units, the nitrogen concentration in the buffer station body is difficult to be uniform. In order to solve this problem, in a further embodiment, the end of the first air inlet pipe 121 connected with the buffer station body 11 extends downward in the vertical direction in the buffer space 15. The length of the part of the first air inlet pipe 121 located in the buffer space 15 is adapted to the height of the buffer space 15. Moreover, the pipe wall of the first air inlet pipe 121 is spaced apart in the vertical direction and provided with a plurality of first air inlet holes 123. The first air inlet holes 123 are opened towards the direction of the first air outlet unit 13, and form an air curtain in the buffer space 15 from the side of the first air inlet unit 12 to the side of the first air outlet unit 13, which can improve the uniformity of nitrogen input and make the nitrogen uniformly distributed and circulated in the buffer space 15. In some embodiments, the number of the first air inlet pipes 121 can be multiple and arranged on both sides of the first passage opening 14 in the second horizontal direction, which can improve the air inlet amount and make the flow more uniform and not block the passing of the products to be buffered. In actual application, the two parts of the first air inlet pipe 121 located inside and outside the buffer space 15 can be designed separately.
[0034] Referring to Figure 3 As shown, the first air inlet pipe 121 and the first air outlet pipe 131 are respectively provided with a first valve 122 and a second valve 132 for controlling the flow size. The first valve 122 and the second valve 132 are solenoid valves, and the flow size and opening and closing are controlled by a control unit. When the nitrogen content in the buffer space 15 is lower than the preset value, the first air inlet unit 12 is first operated and the first valve 122 is opened, so that the nitrogen enters the buffer space 15. Then the second valve 132 is opened, so that the air in the buffer space 15 whose nitrogen content does not meet the standard is discharged, which is convenient for the nitrogen source to inject into the buffer station and occupy the buffer space 15, so as to improve the nitrogen content in the buffer space 15 to above the preset value. In some embodiments, the first air outlet pipe 131 is also provided with a check valve, which can prevent the outside air from flowing back into the buffer space 15 even if the first air inlet pipe 121 does not input nitrogen.
[0035] Referring to Figure 1 , Figure 6 As shown, the transition mechanism 2 includes a transition warehouse 21 arranged on one side of the buffer station body 11 and surrounding to form a transition space 27, and a second air exchange assembly arranged in the transition warehouse 21 and used for making the nitrogen content in the transition space 27 consistent with that in the buffer space 15. When the product to be buffered enters the transition warehouse 21, the second air exchange assembly is used to increase the nitrogen content in the transition space 27 to be equal to or even greater than that in the buffer space 15, so that the product in the transition warehouse 21 will not cause the decrease of the nitrogen content in the buffer space 15 when the product enters the buffer station.
[0036] Specifically, the second ventilation assembly includes a second air inlet unit 22 and a second air outlet unit 23. The air in the buffer space 15 is discharged through the second air outlet unit 23, and the second air inlet unit 22 injects high-purity nitrogen to occupy the buffer space 15, thereby increasing the nitrogen content in the buffer space 15. In order to detect the nitrogen content in the transition chamber 21, the transition chamber 21 is provided with a second gas detection unit (not shown in the figure) in the transition space 27. Like the first gas detection unit, the second gas detection unit in this embodiment is a nitrogen detection sensor. The nitrogen content in the transition layer chamber can be detected in real time through the second gas detection unit. In order to increase the nitrogen content increasing rate, the second air inlet unit 22 and the second air outlet unit 23 are respectively arranged at both ends of the transition chamber 21 along the length direction / first horizontal direction of the transition chamber 21, so that the nitrogen gas passes through the entire transition space 27 along the length direction of the transition chamber 21, and the airflow can be kept stable. Of course, the second air inlet unit 22 and the second air outlet unit 23 can also be arranged in the transition chamber 21 along the width direction / second horizontal direction or diagonal direction of the transition chamber 21. The transition chamber 21 is provided with a second passage opening 24 connected to the outside, and the external product enters the transition chamber 21 through the second passage opening 24. At the same time, the transition chamber 21 is also provided with a third passage opening 25 connected to the buffer space 15. The buffer product enters the buffer space 15 through the third passage opening 25 of the transition chamber 21 and the first passage opening 14 of the buffer station in sequence. The second passage opening 24 and the third passage opening 25 are respectively movably provided with airtight doors 26 for opening and closing. The airtight doors 26 are respectively adapted to the second passage opening 24 and the third passage opening 25 to open or isolate the transition chamber 21 and the buffer station. For this embodiment, the shell of the transition chamber 21 is sealingly connected with the buffer station. Moreover, the shell of the transition chamber 21 encloses to form the transition space 27, and when the airtight door 26 at the third passage opening 25 or the first passage opening 14 is opened, the transition space 27 is communicated with the buffer space 15.
[0037] In this embodiment, the second air inlet unit 22 includes a second air inlet pipe 221 connected to an external positive pressure nitrogen source at one end and penetrating the transition chamber 21 at the other end. The transition chamber 21 is provided with a third through hole 223 adapted to the second air inlet pipe 221. The second air outlet unit 23 includes a second air outlet pipe 231 connected to the outside at one end and penetrating the transition chamber 21 and connected to the transition space 27 at the other end. Correspondingly, the transition chamber 21 is provided with a fourth through hole 233 adapted to the second air outlet pipe 231. The positive pressure nitrogen source configured by the second air inlet unit 22 is defined as a second nitrogen source, and the nitrogen gas blown by the second nitrogen source is input into the transition space 27 through the second air inlet pipe 221, so that the nitrogen content in the transition chamber 21 can be increased to be consistent with or greater than the nitrogen content in the buffer space 15.
[0038] Referring to Figure 5 , Figure 6As shown, the second air inlet unit 22 is arranged at the transition chamber 21 near the second passage opening 24. Specifically, the second air inlet pipe 221 is sealingly connected to the transition chamber 21 at the third through hole 223. The end of the second air inlet pipe 221 connected to the transition chamber 21 extends in the vertical direction within the transition space 27. Moreover, the pipe wall of the second air inlet pipe 221 is spaced apart in the vertical direction to form a plurality of second air inlets 224. Thus, a wind curtain is formed in the transition space 27 from the second air inlet unit 22 to the second air outlet unit 23 side, which can improve the uniformity of nitrogen input and increase the ventilation rate, so that the nitrogen is uniformly distributed and circulated within the transition space 27. In actual application, the internal and external parts of the second air inlet pipe 221 within the transition space 27 can be designed separately.
[0039] Further, the second air inlet pipe 221 and the second air outlet pipe 231 are respectively provided with a third valve 222 and a fourth valve 232 for controlling the flow rate. The third valve 222 and the fourth valve 232 are both solenoid valves, and the flow rate and opening and closing are controlled by a control unit. After the products to be cached enter the transition space 27, the second air inlet unit 22 is operated and the third valve 222 is opened, so that nitrogen enters the transition space 27, and the fourth valve 232 is opened, so that the air in the cache space 15 with a nitrogen content that does not meet the standard is discharged, facilitating the injection of nitrogen source into the transition chamber 21 to occupy the transition space 27, thereby increasing the nitrogen content in the transition space 27 to above the preset value, and then closing the fourth valve 232. The third valve 222 is not closed or at least closed after the fourth valve 232, so as to prevent external air from entering the cache space 15 and to communicate the cache space 15 and the transition space 27, thereby conveying the products to be cached into the cache space 15. In some embodiments, the second air outlet pipe 231 is also provided with a check valve, which can prevent external air from flowing back into the transition space 27 even if the second air inlet pipe 221 does not input nitrogen.
[0040] In this embodiment, the positive pressure nitrogen sources connected to the first air inlet unit 12 and the second air inlet unit 22 are independent of each other, and the independent valves are controlled to correspondingly control the first air inlet pipe 121 and the second air inlet pipe 221 to supply gas in the transition space 27 and the cache space 15, respectively. After the nitrogen concentration in the cache space 15 meets the standard and tends to be stable, when the products in the transition space 27 need to be frequently taken out and put in, only the third valve 222 and the fourth valve 232 need to be controlled to inject nitrogen through the second air inlet pipe 221 and discharge oxygen-containing air through the second air outlet pipe 231, so as to adjust the nitrogen concentration in the transition chamber. Moreover, the size of the transition space 27 is usually small, which can save the amount of gas and reduce the operating cost.
[0041] Working principle: before accessing the product, first inject nitrogen into the buffer space 15 of the buffer station body 11 through the first air exchange assembly, and discharge the air to make the nitrogen concentration in the buffer station body 11 reach the preset standard. When accessing the product, open the airtight door 26 at the second channel opening 24, put the product to be buffered into the transition space 27 through the second channel opening 24, and close the airtight door 26 at the second channel opening 24 to keep the transition space 27 in a closed state. The second air exchange assembly is used to discharge the air in the transition space 27, so that the nitrogen content in the transition space 27 is increased to be consistent with the buffer space 15. The airtight door 26 at the third channel opening 25 is opened to make the transition space 27 communicate with the buffer space 15, so that the product to be buffered can enter the buffer space 15 through the first channel opening 14, and the airtight door 26 at the third channel opening 25 is closed.
[0042] Obviously, the above embodiments are only examples for clearly illustrating, not limiting the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments cannot be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.
Claims
1. A nitrogen buffer station, characterized by, The application relates to a nitrogen storage device. The device comprises a storage mechanism (1) and a transition mechanism (2). The storage mechanism (1) comprises a storage station body (11) which encloses a storage space (15), a first air exchange assembly arranged in the storage station body (11) and used for ensuring that the nitrogen content in the storage space (15) reaches a standard.
2. The nitrogen buffer station of claim 1, wherein, The storage station body (11) is provided with a first channel opening (14) for the to-be-stored products to pass through.
3. The nitrogen buffer station of claim 2, wherein, The transition mechanism (2) comprises a transition warehouse (21) arranged on one side of the storage station body (11) and enclosing a transition space (27), and a second air exchange assembly arranged in the transition warehouse (21) and used for ensuring that the nitrogen content in the transition space (27) is greater than or equal to the nitrogen content in the storage space (15).
4. The nitrogen buffer station of claim 2, wherein, The transition warehouse (21) is provided with a second channel opening (24) communicated with the outside and a third channel opening (25) communicated with the storage space (15) through the first channel opening (14), and the second channel opening (24) and the third channel opening (25) are respectively provided with airtight doors (26) used for opening and closing.
5. The nitrogen buffer station of claim 2, wherein, The first air exchange assembly comprises a first air inlet unit (12) and a first air outlet unit (13).
6. The nitrogen buffer station of claim 5, wherein, The first air inlet unit (12) comprises a first air inlet pipe (121) which is communicated with a positive pressure nitrogen source at one end and is arranged through one side of the storage station body (11) at the other end.
7. The nitrogen buffer station of claim 5, wherein, The first air outlet unit (13) comprises a first air outlet pipe (131) which is communicated with the outside at one end and is arranged through the other side of the storage station body (11) and is communicated with the storage space (15).
8. The nitrogen buffer station of claim 1, wherein, The first air inlet pipe (121) extends in the vertical direction in the storage space (15), and the pipe wall of the first air inlet pipe (121) is provided with a plurality of first air inlet holes (123) in the vertical direction.
9. The nitrogen buffer station of claim 5, wherein, The first air inlet pipe (121) and the first air outlet pipe (131) are respectively provided with a first valve (122) and a second valve (132) used for controlling the flow size. The second air exchange assembly comprises a second air inlet unit (22) and a second air outlet unit (23). The second air inlet unit (22) comprises a second air inlet pipe (221) which is communicated with a positive pressure nitrogen source at one end and is arranged through the transition warehouse (21) at the other end. The second air outlet unit (23) comprises a second air outlet pipe (231) which is communicated with the outside at one end and is arranged through the transition warehouse (21) and is communicated with the transition space (27) at the other end. The second air inlet pipe (221) and the second air outlet pipe (231) are respectively provided with a third valve (222) and a fourth valve (232) used for controlling the flow size. The positive pressure nitrogen sources communicated with the first air inlet unit (12) and the second air inlet unit (22) are independent of each other. The storage station body (11) is provided with a first gas detection unit in the storage space (15), and the transition warehouse (21) is provided with a second gas detection unit in the transition space (27). The first air inlet unit (12) is arranged on the storage station body (11) close to the first channel opening (14), and the first air outlet unit (13) is arranged on the storage station body (11) away from the first channel opening (14).
10. The nitrogen buffer station of claim 9, wherein, The second air inlet unit (22) is arranged at the transition bin (21) close to the second passage opening (24), the second air inlet pipe (221) extends in the vertical direction in the transition space (27), and the pipe wall of the second air inlet pipe (221) is spaced apart in the vertical direction to be provided with a plurality of second air inlet holes (224).