CN220826387U - Heterojunction battery screen printing automatic turn-over device - Google Patents
Heterojunction battery screen printing automatic turn-over device Download PDFInfo
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- CN220826387U CN220826387U CN202322557187.2U CN202322557187U CN220826387U CN 220826387 U CN220826387 U CN 220826387U CN 202322557187 U CN202322557187 U CN 202322557187U CN 220826387 U CN220826387 U CN 220826387U
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- negative electrode
- heterojunction
- positive electrode
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- 230000007306 turnover Effects 0.000 title claims abstract description 100
- 238000007650 screen-printing Methods 0.000 title claims abstract description 22
- 238000007639 printing Methods 0.000 abstract description 23
- 238000000034 method Methods 0.000 description 16
- 239000010409 thin film Substances 0.000 description 4
- 229910021419 crystalline silicon Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 101100441413 Caenorhabditis elegans cup-15 gene Proteins 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
The utility model provides a heterojunction battery screen printing automatic turn-over device, which comprises: the device comprises a first conveying table and a second conveying table which are arranged along the same length direction, wherein a first screen printer and a second screen printer are respectively arranged on the first conveying table and the second conveying table, and a turn-over mechanism is arranged between the first conveying table and the second conveying table; the turnover mechanism comprises a frame and turnover wheels, the turnover wheels comprise rotating shafts rotatably mounted on the frame, the rotating shafts are distributed along the width directions of the first conveying table and the second conveying table, driving motors used for driving the rotating shafts to rotate are mounted on the frame, turnover supporting plates are radially arranged on the rotating shafts, a plurality of turnover supporting plates are arranged around the rotating shafts, and each turnover supporting plate is provided with an electric sucking disc capable of adsorbing heterojunction batteries. The utility model has the continuous turn-over function of the heterojunction battery, can realize continuous automatic double-sided printing of the heterojunction battery, and improves the printing efficiency.
Description
Technical Field
The utility model relates to the technical field of heterojunction battery printing, in particular to an automatic screen printing turn-over device for a heterojunction battery.
Background
Heterojunction cells (HIT) are amorphous silicon thin films deposited on crystalline silicon, and are generally classified as crystalline silicon solar cells in the industry due to the fact that crystalline silicon materials are used as substrates and have a large proportion in the materials; and because the thin film solar cell technology is used in the preparation process, few people list the thin film solar cell technology as a thin film solar cell.
In the heterojunction production and processing process, a silver paste lead circuit is required to be printed on a heterojunction battery piece in a screen printing mode, and in the specific heterojunction battery processing process, the silver paste lead circuit is required to be printed in a double-sided screen printing mode, but for a traditional screen printing production transmission line, the traditional screen printing production transmission line generally only has a single-sided conveying function, after one side of a heterojunction battery is printed, the other side of the heterojunction battery is required to be printed in a manual auxiliary turning mode, so that time and labor are wasted, the printing efficiency is reduced, and meanwhile, the labor cost is increased.
Disclosure of utility model
The utility model aims at overcoming the defects of the prior art, and provides an automatic screen printing turnover device for heterojunction batteries, which realizes continuous automatic double-sided printing of the heterojunction batteries by matching a turnover mechanism with a first conveying table and a second conveying table, and improves printing efficiency.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a heterojunction cell screen printing automatic turn-over device, comprising:
The device comprises a first conveying table and a second conveying table which are arranged along the same length direction, wherein a first screen printer and a second screen printer are respectively arranged on the first conveying table and the second conveying table, and a turn-over mechanism is arranged between the first conveying table and the second conveying table;
The turnover mechanism comprises a frame and turnover wheels, the turnover wheels comprise rotating shafts rotatably mounted on the frame, the rotating shafts are distributed along the width directions of the first conveying table and the second conveying table, driving motors used for driving the rotating shafts to rotate are mounted on the frame, turnover supporting plates are radially arranged on the rotating shafts, a plurality of turnover supporting plates are arranged around the rotating shafts, and each turnover supporting plate is provided with an electric sucking disc capable of adsorbing heterojunction batteries.
Preferably, the frame includes the base that the level set up and a pair of perpendicular arm of vertical fixing on the base, the rotation axis rotation is installed a pair of between the perpendicular arm top, the both ends of base extend to a pair of perpendicular arm is kept away from each other one side and has seted up the mounting hole.
Preferably, each turnover supporting plate is provided with a limiting slat at a position close to the rotating shaft, and a limiting groove capable of accommodating heterojunction batteries is formed between the limiting slat and the turnover supporting plate.
Preferably, one end of the rotating shaft is provided with a positive electrode wiring structure, the positive electrode wiring structure comprises a positive electrode ferrule which is rotatably sleeved on the rotating shaft, a first positive electrode conductive ring is embedded on the inner wall of the positive electrode ferrule, a second positive electrode wire ring which is always contacted with the first positive electrode conductive ring is embedded on the rotating shaft, and the second positive electrode wire ring is connected with the positive electrode of the electric sucking disc.
Preferably, one end of the rotating shaft, which is far away from the positive electrode wiring structure, is provided with a negative electrode wiring structure, the negative electrode wiring structure comprises a negative electrode ferrule which is rotatably sleeved on the rotating shaft, a negative electrode conductive ring is embedded on the inner wall of the negative electrode ferrule, a plurality of negative electrode contacts which can be contacted with the negative electrode conductive ring are embedded on the rotating shaft in a surrounding manner, the number of the negative electrode contacts is equal to that of the electric sucking discs, the negative electrode contacts are connected with the negative electrodes, and a fracture is formed in the negative electrode conductive ring and only one negative electrode contact can pass through the fracture.
Preferably, the positive electrode ferrule and the negative electrode ferrule are both provided with mounting arms, the bottom ends of the mounting arms are bent towards one sides of the vertical arms and are provided with lug plates, and the lug plates are fixedly connected with the vertical arms.
Preferably, a wiring cavity is formed in the mounting arm, and a wiring slot hole aligned with the wiring cavity is formed in the vertical arm.
The utility model has the beneficial effects that:
According to the utility model, through the matching of the turn-over mechanism and the first conveying table and the second conveying table, after one surface of the heterojunction battery is printed and conveyed by the first conveying table and the first screen printer, the heterojunction battery on one surface of the heterojunction battery is printed by using the turn-over supporting plate to turn over onto the second conveying table, and the printing of the other surface of the heterojunction battery is realized by the second conveying table and the second screen printer, so that the double-sided printing of the heterojunction battery is realized, the automatic turn-over conveying of the heterojunction battery can be realized without manual assistance in the whole printing process, the automation degree is high, the labor cost is saved, and the printing effect of the heterojunction battery is improved.
According to the utility model, through the coordination of the electric sucking disc, the positive electrode wiring structure and the negative electrode wiring structure which are arranged on the turn-over supporting plate, in the process that the rotating shaft drives the plurality of turn-over supporting plates to continuously rotate, the first positive electrode conductive circular ring is connected with an external positive electrode circuit, the electric sucking disc positive electrode circuit on each turn-over supporting plate is communicated by utilizing the constant contact of the first positive electrode conductive circular ring and the second positive electrode conductive circular ring, the negative electrode conductive circular ring is connected with the external negative electrode circuit, the electric sucking disc negative electrode circuit on the turn-over supporting plate is communicated by utilizing the contact of the negative electrode contact piece and the negative electrode conductive circular ring, after one-side heterojunction battery is conveyed onto the turn-over supporting plate, the electric sucking disc is adsorbed and fixed by the electric sucking disc, so that the heterojunction battery is prevented from falling off in the process of the turn-over supporting plate, when the heterojunction battery is borne and turned over onto the second conveying table, the corresponding negative electrode contact piece on the turn-over supporting plate is disconnected, the corresponding electric sucking disc is prevented from adsorbing the corresponding heterojunction battery, the electric sucking disc can automatically fall to the second heterojunction battery, the whole heterojunction battery can be conveyed to the second heterojunction battery can be automatically and stably conveyed, the whole heterojunction battery can be printed continuously, the printing process can be further realized, and the continuous printing process can be further improved.
In conclusion, the continuous turnover device has the continuous turnover function of the heterojunction battery, can realize continuous automatic double-sided printing of the heterojunction battery, and improves printing efficiency.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of a turn-over mechanism according to the present utility model;
FIG. 3 is a schematic view of a turn-up wheel of the present utility model;
fig. 4 is a schematic diagram of a positive electrode connection structure and a negative electrode connection structure according to the present utility model.
1. A first conveying table; 2. a second conveying table; 3. a first screen printer; 4. a second screen printer; 5. a turn-over mechanism; 6. a frame; 7. a turn-over wheel; 8. a driving motor; 9. a base; 10. a vertical arm; 11. a wiring slot; 12. a rotation shaft; 13. turning over the supporting plate; 14. limit lath; 15. an electric suction cup; 16. an anode wiring structure; 17. a negative electrode wiring structure; 18. a positive electrode collar; 19. a first positive conductive ring; 20. a second positive electrode wire ring; 21. a negative electrode collar; 22. a negative electrode contact; 23. a negative electrode conductive ring; 24. a fracture; 25. a mounting arm; 26. a wiring cavity; 27. ear plate.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, 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 implicitly indicating the 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.
Examples
As shown in fig. 1, this embodiment provides an automatic screen printing turn-over device for heterojunction cells, which includes: the first conveying table 1 and the second conveying table 2 are arranged along the same length direction, the first conveying table 1 and the second conveying table 2 are respectively provided with a first screen printer 3 and a second screen printer 4, the first conveying table 1 and the second conveying table 2 are used for carrying out screen printing on heterojunction batteries in the process of conveying the batteries all the time, the first screen printer 3 and the second screen printer 4 are used for carrying out screen printing on the heterojunction batteries, a turn-over mechanism 5 is arranged between the first conveying table 1 and the second conveying table 2 and is used for turning over the heterojunction batteries, and the first conveying table 1 and the second conveying table 2 are matched for realizing double-sided printing on the heterojunction batteries.
Referring to fig. 1, 2 and 3, in this embodiment, the turn-over mechanism 5 includes a frame 6 and a turn-over wheel 7, the turn-over wheel 7 includes a rotation shaft 12 rotatably mounted on the frame 6, the rotation shaft 12 is distributed along the width direction of the first conveying table 1 and the second conveying table 2, a driving motor 8 for driving the rotation shaft 12 to rotate is mounted on the frame 6, a turn-over support plate 13 is radially disposed on the rotation shaft 12, the turn-over support plate 13 is provided around the rotation shaft 12, in this structural manner, the heterojunction cells are firstly conveyed on the first conveying table 1, screen-printed on a first surface of the heterojunction cells by the first screen printer 3, and then conveyed on the turn-over support plate 13 corresponding to the turn-over wheel 7, then the driving motor 8 is started to drive the rotation shaft 12 and the multiple turn-over support plates 13 to rotate, a heterojunction cell on one printed surface will be carried on each turn-over support plate 13 passing through the first conveying table 1, when the turn-over support plate 13 rotates above the second conveying table 2, the heterojunction cells on one printed surface finish turn-over and drop onto the second conveying table 2, in this structural manner, the heterojunction cells are firstly conveyed on the first surface, and the heterojunction cells are printed on the second surface by the second conveying table 2, and the heterojunction cells through the second screen printer, and the other heterojunction cells are printed on the two surface. In this embodiment, the height of the second conveying table 2 is lower than that of the first conveying table 1, so that the heterojunction cell can fall on the second conveying table 2 smoothly for conveying after being carried and turned by the turning-over supporting plate 13.
Referring to fig. 1, 2 and 3, the frame 6 includes a base 9 horizontally disposed and a pair of vertical arms 10 vertically fixed to the base 9, and a rotation shaft 12 is rotatably installed between tops of the pair of vertical arms 10, and both ends of the base 9 extend to sides of the pair of vertical arms 10 away from each other and are provided with mounting holes so as to facilitate the fixing of the structure. The position of each turnover supporting plate 13, which is close to the rotating shaft 12, is provided with a limiting slat 14, a limiting groove which can accommodate the embedding of the heterojunction battery is formed between the limiting slat 14 and the turnover supporting plates 13, and after the heterojunction battery on one surface of the printing is conveyed onto the turnover supporting plates 13, the heterojunction battery can be embedded into the limiting groove between the limiting slat 14 and the turnover supporting plates 13 for limiting.
Referring to fig. 2, 3 and 4, in a further embodiment, each turn-over supporting plate 13 is provided with an electric sucking disc 15 capable of sucking a heterojunction battery, the electric sucking disc is used for sucking the heterojunction battery borne by the turn-over supporting plate 13, specifically, one end of the rotating shaft 12 is provided with a positive electrode wiring structure 16, the positive electrode wiring structure 16 comprises a positive electrode ferrule 18 rotatably sleeved on the rotating shaft 12, a first positive electrode conductive ring 19 is embedded on the inner wall of the positive electrode ferrule 18, a second positive electrode conductive ring 20 always contacted with the first positive electrode conductive ring 19 is embedded on the rotating shaft 12, the second positive electrode conductive ring 20 is connected with the positive electrode of the electric sucking disc 15, the first positive electrode conductive ring 19 is connected with an external positive electrode circuit in the continuous rotation process of the rotating shaft 12 driving the plurality of turn-over supporting plates 13, and the positive electrode circuit of the electric sucking disc 15 on each turn-over supporting plate 13 is communicated by always contacting the first positive electrode conductive ring 19 with the second positive electrode conductive ring 20. The rotating shaft 12 is far away from the one end of the positive electrode wiring structure 16 and is provided with a negative electrode wiring structure 17, the negative electrode wiring structure 17 comprises a negative electrode ferrule 21 which is rotatably sleeved on the rotating shaft 12, a negative electrode conductive circular ring 23 is embedded on the inner wall of the negative electrode ferrule 21, a plurality of negative electrode contacts 22 which can be in contact with the negative electrode conductive circular ring 23 are embedded on the rotating shaft 12 in a surrounding manner, the number of the negative electrode contacts 22 is equal to that of the electric suction cups 15, the negative electrode conductive circular ring 23 is provided with a fracture 24, the fracture 24 is only used for one negative electrode contact 22 to pass through, the negative electrode conductive circular ring 23 is connected with an external negative electrode circuit, the electric suction cups 15 on the turnover support plate 13 are connected by utilizing the contact between the negative electrode contact 22 and the negative electrode conductive circular ring 23, and therefore, after the heterojunction battery is conveyed onto the turnover support plate 13, the electric suction cups 15 are adsorbed and fixed, so that the turnover 13 can not drop in the process of bearing the heterojunction battery, wherein the fracture 24 is arranged at the position (the position of the fracture 24 is not limited in the figure) above the corresponding second conveying table 2, when the heterojunction battery is directly corresponding to the second conveying table, the heterojunction battery is automatically and the heterojunction battery is automatically conveyed to the second heterojunction table, and the heterojunction battery can be automatically and stably, and the heterojunction battery can be automatically conveyed to the turnover table 2, and the turnover support plate can be automatically and stably by the electric suction cup 15 when the heterojunction battery is automatically and the turnover table is automatically and the turnover, and the turnover table is conveyed to the position.
Referring to fig. 2, 3 and 4, in this embodiment, the positive electrode ferrule 18 and the negative electrode ferrule 21 are provided with mounting arms 25, the bottom ends of the mounting arms 25 are bent towards one side of the vertical arm 10 and are provided with ear plates 27, the ear plates 27 are fixedly connected with the vertical arm 10 and used for fixing the positive electrode ferrule 18 and the negative electrode ferrule 21, a wiring cavity 26 is formed in the mounting arms 25, and wiring slots 11 aligned with the wiring cavity 26 are formed in the vertical arm 10 so as to facilitate circuit connection of the first positive electrode conductive ring 19 and the negative electrode conductive ring 23.
Working procedure
When the heterojunction battery is used, firstly, the heterojunction battery is conveyed on the first conveying table 1, screen printing is carried out on the first surface of the heterojunction battery through the first screen printer 3, the heterojunction battery is conveyed to the turn-over supporting plate 13 corresponding to the turn-over wheel 7 after being printed, then the driving motor 8 is started to drive the rotating shaft 12 and the turn-over supporting plates 13 to rotate, the heterojunction battery with one printed surface is borne on each turn-over supporting plate 13 through the first conveying table 1, when the turn-over supporting plates 13 rotate to the position above the second conveying table 2, the heterojunction battery with one printed surface finishes turn-over and falls onto the second conveying table 2, the heterojunction battery is conveyed through the second screen printer 4 through the second conveying table 2, screen printing is carried out on the other surface of the heterojunction battery, therefore, double-sided printing of the heterojunction battery is finished, automatic turn-over conveying of the heterojunction battery can be achieved without manual assistance in the whole printing process, the degree of automation is high, the labor cost is saved, and the printing effect of the heterojunction battery is improved. In addition, in the continuous rotation process of the plurality of turn-over support plates 13 driven by the rotating shaft 12, the first positive electrode conductive circular ring 19 is connected with an external positive electrode circuit, the positive electrode circuit of the electric sucking disc 15 on each turn-over support plate 13 is communicated by utilizing the constant contact of the first positive electrode conductive circular ring 19 and the second positive electrode conductive circular ring 20, the negative electrode conductive circular ring 23 is connected with an external negative electrode circuit, the contact of the negative electrode contact piece 22 and the negative electrode conductive circular ring 23 is utilized, the negative electrode circuit of the electric sucking disc 15 on the turn-over support plate 13 is communicated, therefore, after one heterojunction battery is conveyed onto the turn-over support plate 13, the heterojunction battery is adsorbed and fixed by the electric sucking disc 15, so that the heterojunction battery is prevented from falling off in the rotation turn-over process of the turn-over support plate 13, when the heterojunction battery is borne and turned over onto the second conveying table 2 by the turn-over support plate 13, the corresponding negative electrode contact piece 22 on the turn-over support plate 15 is disconnected, the corresponding negative electrode contact piece 15 circuit is not adsorbed by the corresponding heterojunction battery, the heterojunction battery can automatically fall down to the second heterojunction battery, the whole heterojunction battery can be conveyed onto the second heterojunction table, the continuous printing process can be realized, the continuous printing of the heterojunction battery can be realized, and the continuous printing of the heterojunction can be realized, and the continuous printing process of the heterojunction battery can be realized, and the two-down, and the continuous heterojunction can be stably printed.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (7)
1. The utility model provides a heterojunction battery screen printing automatic turn-over device which characterized in that includes:
The device comprises a first conveying table and a second conveying table which are arranged along the same length direction, wherein a first screen printer and a second screen printer are respectively arranged on the first conveying table and the second conveying table, and a turn-over mechanism is arranged between the first conveying table and the second conveying table;
The turnover mechanism comprises a frame and turnover wheels, the turnover wheels comprise rotating shafts rotatably mounted on the frame, the rotating shafts are distributed along the width directions of the first conveying table and the second conveying table, driving motors used for driving the rotating shafts to rotate are mounted on the frame, turnover supporting plates are radially arranged on the rotating shafts, a plurality of turnover supporting plates are arranged around the rotating shafts, and each turnover supporting plate is provided with an electric sucking disc capable of adsorbing heterojunction batteries.
2. The automatic screen printing turn-over device for heterojunction cells according to claim 1, wherein the frame comprises a base arranged horizontally and a pair of vertical arms vertically fixed on the base, the rotating shaft is rotatably arranged between the tops of the pair of vertical arms, and two ends of the base extend to one sides of the pair of vertical arms far away from each other and are provided with mounting holes.
3. The automatic screen printing turnover device for heterojunction cells according to claim 1, wherein each turnover supporting plate is provided with a limit plate at a position close to the rotating shaft, and a limit groove capable of accommodating the heterojunction cells is formed between the limit plate and the turnover supporting plate.
4. The automatic screen printing turn-over device for the heterojunction battery according to claim 2, wherein a positive electrode wiring structure is arranged at one end of the rotating shaft, the positive electrode wiring structure comprises a positive electrode ferrule rotatably sleeved on the rotating shaft, a first positive electrode conductive ring is embedded on the inner wall of the positive electrode ferrule, a second positive electrode wire ring which is always contacted with the first positive electrode conductive ring is embedded on the rotating shaft, and the second positive electrode wire ring is connected with the positive electrode of the electric sucking disc.
5. The automatic screen printing turn-over device for the heterojunction battery according to claim 4, wherein one end, far away from the positive electrode wiring structure, of the rotating shaft is provided with a negative electrode wiring structure, the negative electrode wiring structure comprises a negative electrode ferrule rotatably sleeved on the rotating shaft, a negative electrode conductive circular ring is embedded on the inner wall of the negative electrode ferrule, a plurality of negative electrode contacts capable of being contacted with the negative electrode conductive circular ring are embedded on the rotating shaft in a surrounding mode, the number of the negative electrode contacts is equal to that of the electric sucking discs, the negative electrode contacts are connected with the negative electrodes, a fracture is formed in the negative electrode conductive circular ring, and only one negative electrode contact passes through the fracture.
6. The automatic screen printing turn-over device for heterojunction cells according to claim 5, wherein the positive electrode ferrule and the negative electrode ferrule are respectively provided with a mounting arm, the bottom ends of the mounting arms are bent towards one side of the vertical arms and are provided with lug plates, and the lug plates are fixedly connected with the vertical arms.
7. The automatic screen printing turn-over device for heterojunction cells according to claim 6, wherein a wiring cavity is formed in the mounting arm, and a wiring slot hole aligned with the wiring cavity is formed in the vertical arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322557187.2U CN220826387U (en) | 2023-09-20 | 2023-09-20 | Heterojunction battery screen printing automatic turn-over device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322557187.2U CN220826387U (en) | 2023-09-20 | 2023-09-20 | Heterojunction battery screen printing automatic turn-over device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220826387U true CN220826387U (en) | 2024-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322557187.2U Active CN220826387U (en) | 2023-09-20 | 2023-09-20 | Heterojunction battery screen printing automatic turn-over device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220826387U (en) |
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2023
- 2023-09-20 CN CN202322557187.2U patent/CN220826387U/en active Active
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