EP4533550A1 - Système et procédé de fabrication d'un élément de cellule photovoltaïque - Google Patents
Système et procédé de fabrication d'un élément de cellule photovoltaïqueInfo
- Publication number
- EP4533550A1 EP4533550A1 EP23731100.6A EP23731100A EP4533550A1 EP 4533550 A1 EP4533550 A1 EP 4533550A1 EP 23731100 A EP23731100 A EP 23731100A EP 4533550 A1 EP4533550 A1 EP 4533550A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- parts
- substrate
- main surface
- contact
- photovoltaic cell
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/10—Semiconductor bodies
- H10F77/14—Shape of semiconductor bodies; Shapes, relative sizes or dispositions of semiconductor regions within semiconductor bodies
- H10F77/147—Shapes of bodies
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F71/00—Manufacture or treatment of devices covered by this subclass
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P54/00—Cutting or separating of wafers, substrates or parts of devices
Definitions
- a photovoltaic cell converts part of light radiation into electrical energy.
- a photovoltaic cell includes a substrate configured to generate electrons upon receipt of light radiation, a first electrically conductive structure on a first surface of the substrate and a second electrically conductive structure on a second surface of the substrate, opposite the first surface.
- Each surface layer generally allows the privileged collection of a type of carrier (electrons or holes).
- the mainly used substrate includes silicon.
- Irradiation consists of laser firing a photovoltaic cell to form a trench in the substrate to facilitate the separation of the cell into two elements.
- Splitting consists of physically and manually separating two parts of the same cell to obtain two distinct photovoltaic cell elements of reduced size. But cleavage is a delicate operation, due to the fact that the silicon substrate is fragile, that is to say brittle.
- the cleavage step can therefore result in the cell breaking into numerous elements having undesired random shapes.
- irradiation emits strong heat at the point of impact, both on the surface and at depth. The emission of heat, which can lead to silicon melting, significantly degrades cell performance.
- the power of the laser must be reduced and in this case it no longer allows effective cleavage. Indeed, with reduced laser power, cleavage becomes difficult and random, which causes high breakage rates.
- photovoltaic cells for various devices, such as roller shutters or connected objects, in particular for small devices, such as calculators, etc.
- An object of the invention consists of proposing means for providing a photovoltaic cell element having varied shapes with satisfactory performance.
- a system for the manufacture of a photovoltaic cell element, the element comprising a photovoltaic cell substrate configured to generate electrons upon receipt of light radiation, the substrate comprising a main surface and a secondary surface opposite the main surface as well as a trench on the surface main to form an internal contour delimiting a part to be hollowed out inside the internal contour and a part to be kept outside the internal contour.
- the system including:
- first and second parts being configured to cooperate so that one of the first and second parts is in contact with the main surface of the substrate and the other of the first and second parts are in contact with the secondary surface of the substrate, and
- this system makes it possible to reduce the rate of breakage to a completely unexpected extent, in particular, at the delicate stage of hollowing out the central part of the photovoltaic cell element.
- Such a system is particularly suitable for manufacturing hollowed-out photovoltaic cell elements, that is to say devoid of material, in their center. The system allows separation of the part to be hollowed out without breaking the part to be kept.
- an assembly comprising a photovoltaic cell element provided with a photovoltaic cell substrate configured to generate electrons upon reception of light radiation, the substrate comprising a main surface and a secondary surface opposite to the main surface as well as a trench on the main surface to form an internal contour delimiting a part to be hollowed out inside the internal contour and a part to be kept outside the internal contour, the assembly comprising a system such as defined above.
- Figure 1 illustrates schematically an exploded perspective view of an embodiment of a system for manufacturing a photovoltaic cell element
- Figure 2 schematically illustrates a top view of one embodiment of a photovoltaic cell element
- Figures 3 to 5 schematically illustrate the main steps of another mode of implementing a process for manufacturing a photovoltaic cell element
- Figures 6 and 7 schematically illustrate sectional views of other embodiments of a system for manufacturing a photovoltaic cell element
- Figures 8 to 11 schematically illustrate the main steps of another mode of implementing a process for manufacturing a photovoltaic cell element
- Figure 12 schematically illustrates other embodiments of a photovoltaic cell element.
- an imprint of the element is formed on one of the first and second parts.
- one of the first and second parts is configured to be screwed onto the other of the first and second parts.
- the system comprises an intermediate part shaped to be brought into contact with one of the main and secondary surfaces, the intermediate part being mounted with a degree of freedom, or in a fixed manner, on one of the first and second pieces.
- one of the first and second parts is shaped to form a guide configured to cooperate with the stamper so as to guide the stamper when it is introduced into said at least one orifice.
- the first and second parts surround the substrate during stamping.
- stamping includes placement of the main surface of the substrate facing the stamper.
- the initialization comprises bringing the main surface of the substrate into contact with the first part and in which the first part carries the substrate.
- the initialization comprises removably mounting one of the first and second parts on the other of the first and second parts.
- the method comprises, before initialization, a step of generating the trench on the main surface of the substrate.
- FIGs 1 and 3 to 7 there is shown a system 1 for the manufacture of a photovoltaic cell element 2, 3.
- the main stages of a process are also shown. for manufacturing a photovoltaic cell element 2, 3.
- a cell element 2, 3 is intended to manufacture a photovoltaic cell.
- the cell element 2, 3 is obtained by cutting in a conventional cell, as illustrated in Figure 8.
- the conventional cell before cutting includes metallization patterns, for example produced by screen printing.
- the patterns can be tailored to suit the desired final annular functional cells.
- the final functional cell 3 is based on a substrate 4, preferably made of crystalline silicon, and its main 5 and secondary 6 surfaces are provided with a metallization pattern, for example based on silver.
- System 1 comprises first and second parts 10, 11, and a stamper 12.
- the second part 11 is provided with a second orifice 14.
- the stamper 12 is able to be introduced into at least one orifice 13, 14 among the first and second orifices so as to be brought into contact with the part to be hollowed out 8 to separate it from the part to be preserved 9.
- L one among the first and second orifices 13, 14 intended to receive the stamper 12, has a section greater than or equal to the section of the body of the stamper 12.
- the other among the first and second orifices 13, 14 has a section greater than or equal to the section of the part to be hollowed out 8 so that the part to be hollowed out 8 can be housed, after separation, in said orifice.
- the other among the first and second orifices 13, 14 has a depth Pg which is greater than or equal to the thickness of the element 2, 3, so as to receive the recessed part 8 when it is separated from the part to keep.
- the part to be retained 9 remains in contact with the first and second parts 10, 11.
- the first and second parts 10, 11 are then separated to obtain the hollowed out element 3, as illustrated in Figure 2, that is to say the element 2, 3 devoid of material in its central part.
- an element 2, 3 which can have an unconventional geometric shape, such as round, elliptical, triangle, ring, hexagon, etc., as illustrated in Figure 12.
- conventional geometric shape we mean a photovoltaic cell, a quadrilateral shape, such as a square, rectangle or diamond.
- element having a hollowed out part that is to say a free space devoid of material, at the heart of element 2, 3.
- element 3 is of round geometric shape. , with a recessed part 8 also round, so as to form a ring, as illustrated in Figure 2.
- one of the first and second parts 10, 11 receives the element 2, 3 and it is called a support part.
- the other among the first and second parts 10, 11 comes into contact with the element 2, 3 and is called a flange.
- the first part 10 corresponds to the support part and the second part 11 corresponds to the flange.
- the flange is shaped so as not to crush the element 2, 3 when the flange is in contact with the element 2, 3.
- a mechanical stop can be provided, with or without locking, on the support part against which the flange comes into contact so as to be in contact with the element 2, 3 without crushing it.
- the system 1 can comprise an elastic member 60, for example a spring, preferably compression spring to apply a force on the flange so as to guarantee contact between the flange and the element 2, 3.
- the elastic member 60 can be mounted on the flange and configured to cooperate with the stamper 12, so that when the stamper 12 is introduced into the orifice of the flange, the stamper 12 applies a force to the elastic member 60 which transmits it to the flange.
- the elastic member 60 can be mounted on the stamper 12.
- the flange has a face intended to be in contact with one of the main and secondary surfaces 5, 6 of the element 2, 3, configured to be parallel to said surface 5, 6 of the element 2, 3, when the flange is in contact with element 2, 3.
- one of the first and second parts 10, 11 is configured to be removably mounted on the other of the first and second parts
- one of the first and second parts 10, 11 is configured to be screwed onto the other of the first and second parts 10,
- the flange is configured to be screwed onto the support part.
- one of the first and second parts 10, 11 may include an internal screw thread 40 intended to cooperate with a complementary external screw thread 41 formed on the other of the first and second parts 10, 11.
- one of the first and second parts 10, 11 may comprise an internal longitudinal groove extending parallel to the longitudinal axis A, intended to cooperate with an external longitudinal lug formed on the other of the first and second parts 10, 11.
- the screw thread 40, or the longitudinal internal groove of one of the first and second parts 10, 11 makes it possible to guide said part 10, 11 so that the face of said part is parallel to the surface 5, 6 of the element 2, 3, in contact of said part 10, 11 with the element 2, 3.
- the screw thread 40 or the longitudinal internal groove makes it possible to hold the element 2, 3 in contact with the first and second parts 10, 11.
- the first and second parts 10, 11 are configured so that when they are in contact with element 2, 3, element 2, 3 is stationary relative to the first and second parts 10, 11.
- one of the first and second parts 10, 11 is in one piece.
- one-piece part we mean a part made up of a single part.
- the system comprises an intermediate part 30 shaped to be brought into contact with one of the main 5 and secondary 6 surfaces.
- the intermediate part 30 can be mounted on one of the first and second parts 10, 11 with a degree of freedom, for example with a translation along an axis parallel to the longitudinal axis A.
- the intermediate part 30 can be mounted in a fixed manner, on one of the first and second parts 10, 11.
- the intermediate part 30 makes it possible to wedge the element 2 to keep it stationary in order to further promote the separation of the part to be hollowed out 8 from the part to be retained 9.
- the intermediate part 30 can be made of elastomer.
- one of the first and second parts 10, 11 is shaped to form a guide configured to cooperate with the stamper 12 so as to guide the stamper 12 during its introduction into at least one orifice 13, 14 among the first and second orifices.
- the support part is configured to cooperate with the stamper 12, and also with the flange.
- the guide can be a screw thread or a longitudinal groove.
- One of the first and second parts 10, 11 may include an additional internal screw thread 50 intended to cooperate with a complementary external screw thread 51 formed on the stamper 12.
- one of the first and second parts 10, 11 may include an additional internal longitudinal groove extending parallel to the longitudinal axis A, intended to cooperate with an external longitudinal lug formed on the stamper 12.
- the guide makes it possible to center the stamper 12 relative to the element 2, 3.
- the guide formed on one of the first and second parts 10, 11 makes it possible to gradually approach the stamper 12 towards the element 2, 3.
- the guide makes it possible to homogeneously press the part to be hollowed out 8 and limits breakage rates.
- the stamper 12 has a body comprising a base 70, a support head 71 and a cylindrical trunk 72 connecting the support head 71 to the base 70.
- the support head 71 has a section having a shape similar to that of the part to be hollowed out 8 of the element 2, 3.
- the support head 71 comes to bear against the part to be hollowed out 8 which, thanks to the trench 7 generated on the main surface 5, detaches from the part of the substrate to be retained 9.
- the method of manufacturing a photovoltaic cell element 2, 3 uses the manufacturing system 1 as defined above.
- the method includes initialization and stamping.
- Initialization makes it possible to position the element 2, 3 relative to the first and second parts 10, 11 so as to facilitate the removal of the part to be hollowed out 8.
- Stamping makes it possible to physically separate the part to be hollowed out 8 from the part to keep 9.
- the initialization comprises a cooperation of the first and second parts 10, 11 of the system, so that one of the first and second parts is in contact with the main surface of the substrate of the photovoltaic cell element and that the other of the first and second parts is in contact with the secondary surface of the substrate.
- the contacting of the surfaces 5, 6 with the first and second parts 10, 11 can be carried out simultaneously.
- the initialization comprises bringing the main surface of the substrate into contact with the first part and in which the first part carries the substrate.
- the surface is in contact, then we move the part relative to the other so that the opposite surface is in contact with the moved part.
- the stamping comprises an introduction of the stamper of the system into at least one orifice among the first and second orifices of the first and second parts so as to put the stamper in contact with the part of the substrate to be hollowed out to separate it from the part of the substrate to be preserved.
- the first and second parts enclose the substrate 4 of element 2, 3 during stamping. Stamping may include placement of the main surface of the substrate facing the stamper.
- the initialization may include removably mounting one of the first and second parts on the other of the first and second parts.
- the additional external trenches 110 are preferably produced by laser. In other words, each trench 7 is made inside an additional external trench 110.
- the additional external trenches 110 make it possible to separate the elements 2 of the photovoltaic cell, for example by mechanical cleavage.
- photovoltaic cell elements 2 which can have different shapes.
- Figure 10 there is shown an element 2 having a round shape.
- three elements 2 are shown having respectively square, rectangular and triangular shapes.
- three elements 3 are shown respectively obtained from the three elements 2 illustrated in Figure 11, after separation, for each of the three elements, of the part to be hollowed out 8 with the part to be retained 9.
Landscapes
- Photovoltaic Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2205181A FR3136113B1 (fr) | 2022-05-31 | 2022-05-31 | système et procédé de fabrication d’un élément de cellule photovoltaïque |
| PCT/EP2023/064097 WO2023232644A1 (fr) | 2022-05-31 | 2023-05-25 | Système et procédé de fabrication d'un élément de cellule photovoltaïque |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4533550A1 true EP4533550A1 (fr) | 2025-04-09 |
Family
ID=83280177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23731100.6A Pending EP4533550A1 (fr) | 2022-05-31 | 2023-05-25 | Système et procédé de fabrication d'un élément de cellule photovoltaïque |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4533550A1 (fr) |
| FR (1) | FR3136113B1 (fr) |
| TW (1) | TW202349738A (fr) |
| WO (1) | WO2023232644A1 (fr) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4369259B2 (ja) * | 2004-02-19 | 2009-11-18 | シャープ株式会社 | 太陽電池セルの製造方法 |
| US7755157B2 (en) * | 2005-03-29 | 2010-07-13 | Sanyo Electric Co., Ltd. | Photovoltaic device and manufacturing method of photovoltaic device |
| CN202058753U (zh) * | 2011-04-25 | 2011-11-30 | 林胜军 | 环置太阳能封装模块 |
| WO2019076468A1 (fr) * | 2017-10-20 | 2019-04-25 | Applied Materials Italia S.R.L. | Appareil pour séparer une cellule solaire, système pour la fabrication d'au moins un agencement de cellules solaires en bardeaux, et procédé de séparation d'une cellule solaire |
| JP2019102576A (ja) * | 2017-11-30 | 2019-06-24 | セイコーエプソン株式会社 | 電子機器および光電変換素子の製造方法 |
| JP7522590B2 (ja) * | 2020-06-25 | 2024-07-25 | 株式会社カネカ | 太陽電池デバイスの製造方法および太陽電池デバイス |
| EP4226427A4 (fr) * | 2020-10-07 | 2024-11-06 | Solarpaint Ltd. | Panneaux solaires souples et dispositifs photovoltaïques ainsi que leurs procédés et systèmes de production |
-
2022
- 2022-05-31 FR FR2205181A patent/FR3136113B1/fr active Active
-
2023
- 2023-05-25 EP EP23731100.6A patent/EP4533550A1/fr active Pending
- 2023-05-25 WO PCT/EP2023/064097 patent/WO2023232644A1/fr not_active Ceased
- 2023-05-31 TW TW112120215A patent/TW202349738A/zh unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR3136113B1 (fr) | 2024-10-25 |
| WO2023232644A1 (fr) | 2023-12-07 |
| TW202349738A (zh) | 2023-12-16 |
| FR3136113A1 (fr) | 2023-12-01 |
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