WO2025001453A1 - Chaîne de batteries et module photovoltaïque - Google Patents

Chaîne de batteries et module photovoltaïque Download PDF

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Publication number
WO2025001453A1
WO2025001453A1 PCT/CN2024/088945 CN2024088945W WO2025001453A1 WO 2025001453 A1 WO2025001453 A1 WO 2025001453A1 CN 2024088945 W CN2024088945 W CN 2024088945W WO 2025001453 A1 WO2025001453 A1 WO 2025001453A1
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WO
WIPO (PCT)
Prior art keywords
battery string
grids
battery
width
auxiliary
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.)
Ceased
Application number
PCT/CN2024/088945
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English (en)
Chinese (zh)
Inventor
张良
余永林
冯春暖
翟卫鑫
李明明
卫志敏
关淑文
唐慧敏
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Longi Green Energy Technology Co Ltd
Original Assignee
Longi Green Energy Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Longi Green Energy Technology Co Ltd filed Critical Longi Green Energy Technology Co Ltd
Publication of WO2025001453A1 publication Critical patent/WO2025001453A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
    • H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
    • H10F19/902—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells
    • 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
    • H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
    • H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
    • H10F19/902—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells
    • H10F19/904—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells characterised by the shapes of the structures
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present application relates to the technical field of photovoltaic modules, and in particular to a battery string and a photovoltaic module.
  • the cell string is the core component of the photovoltaic module, which converts solar energy into electrical energy through the cell string.
  • the cell string includes multiple cells arranged in sequence, and the surface of the cell is provided with a main grid and a secondary grid, and the current is collected through the secondary grid to collect the current generated by the cell.
  • the main grid and the secondary grid are cross-connected, and the current collected by the secondary grid is collected through the main grid to collect the current generated by the cell.
  • the slurry is printed on the surface of the cell by screen printing to form multiple auxiliary grids and multiple main grids that are perpendicular to each other on the surface of the cell.
  • the current generated by the cell is collected and aggregated by the multiple auxiliary grids and multiple main grids, so as to collect the current generated by the entire cell.
  • setting multiple main grids and multiple auxiliary grids on the surface of the cell requires more slurry, thus increasing the cost of the cell.
  • the auxiliary grid and the main grid will block the upper surface of the cell, affecting the efficiency of the upper surface of the cell absorbing light, thereby affecting the photoelectric conversion efficiency of the cell.
  • the production cost of the cell is reduced by reducing the number of main grids and auxiliary grids, or even eliminating the main grid, while improving the photoelectric conversion efficiency of the cell.
  • the auxiliary grid is set on the surface of the cell, and the welding strip is set at the main grid position, and the auxiliary grid is connected through the welding strip to collect the current collected by the auxiliary grid.
  • the photoelectric conversion efficiency of the solar cell cannot be improved only by reducing the number of main grids or auxiliary grids, or by not providing a main grid.
  • the purpose of the present application is to provide a battery string and a photovoltaic module.
  • this application involves the following aspects:
  • the present application discloses a battery string, which includes a battery cell without a main grid; a plurality of auxiliary grids, which are arranged on the surface of the battery cell at intervals along a first direction; a plurality of welding strips, which are arranged at intervals along a second direction and connected to the surface of the battery cell, and each of the welding strips is connected to at least a portion of the plurality of auxiliary grids, and the second direction is perpendicular to the first direction; the number of the welding strips is x, and the width of the welding strip along the second direction is y, satisfying -0.0105x+0.4186 ⁇ y ⁇ -0.01x+0.48, the unit of x is root, and the unit of y is mm.
  • the present application further discloses a battery string, comprising a battery cell without a main grid; a plurality of auxiliary grids, wherein the plurality of auxiliary grids are arranged at intervals along a first direction on the surface of the battery cell; a plurality of welding strips, wherein the plurality of welding strips are arranged at intervals along a second direction and connected to the surface of the battery cell, and each welding strip is connected to at least a portion of the plurality of auxiliary grids, and the second direction is perpendicular to the first direction; wherein the number of the welding strips is x, and the number of the auxiliary grids is z, satisfying 0.1754x 2 -7.2048x+115.26 ⁇ z ⁇ 0.0828x 2 -3.7862x+100.26, and the units of x and z are roots.
  • the present application discloses a photovoltaic module, wherein the photovoltaic module comprises the battery string described in the first aspect and/or the second aspect, wherein the battery string comprises a plurality of battery strings, and the plurality of battery strings are arranged at intervals.
  • the present application discloses a battery string and a photovoltaic module, wherein the battery string comprises: a battery cell without a main grid; a plurality of auxiliary grids, the plurality of auxiliary grids are arranged at intervals along a first direction on the surface of the battery cell; a plurality of welding strips, the plurality of welding strips are arranged at intervals along a second direction and connected to the surface of the battery cell, and each welding strip is at least connected to a portion of the plurality of auxiliary grids, the second direction is perpendicular to the first direction; the number of welding strips is x, the width of the welding strip along the second direction is y, and -0.0105x+0.4186 ⁇ y ⁇ -0.01x+0.48 is satisfied, the unit of x is root, and the unit of y is mm.
  • the width y of the welding strip along the second direction and the number x of welding strips is greater than or equal to -0.0105x+0.4186, and y is less than or equal to -0.01x+0.48.
  • the photoelectric conversion efficiency of the battery cell is improved.
  • FIG1 shows the photoelectric conversion efficiency of a half-cell when there is no main grid on the front side of the cell, with the number of solder strips x, the width of the solder strips along the second direction y and the number of auxiliary grids z as variables.
  • FIG2 shows the quantitative relationship between the number x of solder strips, the width y of the solder strips along the second direction and the number z of auxiliary grids when there is no main grid on the front side of a half-cell.
  • FIG. 3 shows a graphical relationship between the number x of solder strips and the width y of the solder strips along the second direction.
  • FIG. 4 shows the graphical relationship between the number of solder strips x and the number of secondary grids z.
  • FIG. 5 shows a first schematic structural diagram of the battery cell described in an embodiment of the present application.
  • FIG. 6 shows a second schematic structural diagram of the battery cell described in an embodiment of the present application.
  • FIG. 7 is a schematic diagram showing the structure of the joining point in the embodiment of the present application.
  • FIG. 8 shows a schematic diagram of the adhesive dots described in the embodiment of the present application.
  • FIG. 9 shows a second schematic diagram of the adhesive dots described in the embodiment of the present application.
  • FIG. 10 is a side view of the battery cell described in the embodiment of the present application.
  • FIG. 1 it shows the photoelectric conversion efficiency of the cell when there is no main grid on the front side of the half-cell, with the number of welding strips x, the width of the welding strips along the second direction y and the number of auxiliary grids z as variables;
  • Figure 2 the quantitative relationship between the number of welding strips x, the width of the welding strip along the second direction y and the number of secondary grids z is shown when there is no main grid on the front side of the half-cell;
  • Figure 3 the graphical relationship between the number of welding strips x and the width of the welding strip along the second direction y is shown;
  • Figure 4 the graphical relationship between the number of welding strips x and the number of secondary grids z is shown.
  • the present application discloses a battery string, which includes a battery cell 10 without a main grid; a plurality of auxiliary grids 20, which are arranged at intervals on the surface of the battery cell 10 along a first direction A; a plurality of welding strips 40, which are arranged at intervals along a second direction B and connected to the surface of the battery cell 10, and each welding strip 40 is connected to at least a portion of the plurality of auxiliary grids 20, and the second direction B is perpendicular to the first direction A; the number of welding strips 40 is x, and the width of the welding strip 40 along the second direction B is y, satisfying -0.0105x+0.4186 ⁇ y ⁇ -0.01x+0.48, the unit of x is root, and the unit of y is mm.
  • the battery cell 10 in the present application has a first end face and a second end face that are opposite to each other, and the surface of the battery cell 10 in the present application can be the first end face of the battery cell 10 or the second end face of the battery cell 10.
  • the first end face is the front face of the battery cell 10, and it can be understood that the first end face is the light-receiving surface of the battery cell 10.
  • the second end face is the back face of the battery cell 10, that is, the second end face is the backlight surface of the battery cell 10.
  • the first end face and the second end face of the battery cell 10 are generally rectangular structures or square structures.
  • the battery cell 10 also has a first side surface and a second side surface that are arranged opposite to each other, and a third side surface and a third side surface that are arranged opposite to each other.
  • the direction in which the first side surface extends to the second side surface is set as a first direction A
  • the direction in which the third side surface extends to the fourth side surface is set as a second direction B.
  • the second direction B is perpendicular to the first direction A.
  • the battery string disclosed in the embodiment of the present application includes a battery cell, which is a battery cell 10 without a main grid. It can be understood that no main grid is set on the surface of the battery cell 10. Only a secondary grid 20 is set on the surface of the battery cell 10, and the secondary grid 20 includes a plurality of secondary grids 20, which are arranged on the surface of the battery cell at intervals along the first direction A. Specifically, a metal paste can be printed on the surface of the battery cell 10 by screen printing to form a plurality of secondary grids 20.
  • the auxiliary grid 20 in the embodiment of the present application is conductive. Therefore, the auxiliary grid 20 can be formed by printing a metal paste on the surface of the battery cell 10.
  • the metal paste can be a silver paste or other metal paste.
  • the battery string disclosed in the embodiment of the present application also includes a plurality of welding strips 40, which are arranged at intervals along the second direction B and connected to the surface of the battery cell 10.
  • the welding strip 40 can be bonded to the surface of the battery cell 10 by adhesive dots 50, or the welding strip 40 can be electrically welded to the surface of the battery cell 10 by welding strips.
  • each welding strip 40 extends along a first direction A
  • each auxiliary grid 20 extends along a second direction B
  • each welding strip 40 is perpendicular to the plurality of auxiliary grids 20 and is connected to at least a portion of the plurality of auxiliary grids 20 .
  • the battery string disclosed in the embodiment of the present application includes a battery cell 10, and a plurality of auxiliary grids 20 are arranged at intervals on the surface of the battery cell 10 along a first direction A, so as to collect the current generated by the battery cell 10 through the plurality of auxiliary grids 20.
  • a plurality of welding strips 40 are arranged at intervals along a second direction B and connected to the surface of the battery cell 10, and each welding strip 40 is at least connected to a portion of the plurality of auxiliary grids 20, so that the welding strip 40 is electrically connected to the plurality of auxiliary grids 20, so that the current collected by the plurality of auxiliary grids 20 can be collected through the welding strips 40, so as to collect the current generated by the battery cell together.
  • FIG1 shows that, taking a half-cell as an example, when the number of sub-grids on the back of the cell remains unchanged, that is, when the number of sub-grids on the second end face of the cell remains unchanged, the photoelectric conversion efficiency of the cell is calculated by adjusting the number x of solder strips 40 on the first end face of the cell, the width y of the solder strip 40 along the second direction B and the number z of sub-grids 20, and a reference value of the photoelectric conversion efficiency of the cell is obtained.
  • the type of cell is usually named by the number of main grids (BB). For example, if there are 10 main grids on the surface of the cell, the cell can be named 10BB cell.
  • 12BB-58 12 represents that there are 12 welding strips 40 on the surface of the cell, and 58 represents that there are 58 auxiliary grids 20 on the surface of the cell.
  • 12 welding strips 40 are arranged on the first end surface of the cell 10, that is, the number x of the welding strips 40 is equal to 12.
  • 58 auxiliary grids 20 are arranged on the first end surface of the cell 10, that is, the number z of the auxiliary grids 20 is equal to 58.
  • the width y of the welding strip 40 along the second direction B is equal to 0.36 mm
  • the relative value of the photoelectric conversion efficiency of the cell is taken as the reference value 0.000.
  • the width y of the welding strip 40 along the second direction B is equal to 0.35 mm
  • the relative value of the photoelectric conversion efficiency of the battery cell is 0.0003.
  • the relative value of the photoelectric conversion efficiency of the battery cell is -0.001.
  • the width y of the welding strip 40 along the second direction B is equal to 0.33 mm, the relative value of the photoelectric conversion efficiency of the battery cell is -0.003.
  • the width y of the welding strip 40 along the second direction B is equal to 0.32 mm, the relative value of the photoelectric conversion efficiency of the battery cell is -0.007.
  • the width y of the welding strip 40 along the second direction B is equal to 0.31 mm
  • the relative value of the photoelectric conversion efficiency of the battery cell is -0.013.
  • the relative value of the photoelectric conversion efficiency of the battery cell is -0.020.
  • the relative value of the photoelectric conversion efficiency of the cell is the highest when the width y of the solder strip 40 along the second direction B is equal to 0.35 mm. It can be seen that there is a combination relationship between the number x of the solder strips 40, the width y of the solder strip 40 along the second direction B and the number z of the auxiliary grids 20.
  • the maximum value of the width y of the solder strip 40 along the second direction B can be set to 0.36 mm
  • the minimum value of the width y of the solder strip 40 along the second direction B can be set to 0.3 mm
  • the maximum value of the number z of the auxiliary grids 20 can be set to 66
  • the minimum value of the number z of the auxiliary grids 20 can be set to 51. This allows the photovoltaic conversion efficiency of the cell to be higher.
  • the width y of the soldering ribbon 40 along the second direction B is set to -0.0105x+0.4186 ⁇ y ⁇ -0.01x+0.48.
  • the width y of the soldering strip 40 along the second direction B is set to be greater than or equal to -0.0105x+0.4186 and less than or equal to -0.01x+0.48.
  • the width y of the soldering strip 40 along the second direction B is not only less than or equal to -0.01x+0.48, but also greater than or equal to -0.0105x+0.4186.
  • the width y of the soldering ribbon 40 along the second direction B is less than or equal to 0.36 mm and greater than or equal to 0.3 mm.
  • the width y of the soldering ribbon 40 along the second direction B is less than or equal to 0.35 mm and greater than or equal to 0.28 mm.
  • the width y of the soldering strip 40 along the second direction B is greater than Or equal to -0.0105x+0.4186, and less than or equal to -0.01x+0.48.
  • the photoelectric conversion efficiency of the battery cell is further improved.
  • the number of the auxiliary grids 20 is z, satisfying z ⁇ 0.0828x 2 -3.7862x+100.26, and the units of x and z are both roots.
  • the number z of the auxiliary grids 20 is set to be less than or equal to 0.0828x 2 -3.7862x+100.26, so as to improve the photoelectric conversion efficiency of the cell by adjusting the number z of the auxiliary grids 20 when the number x of the welding strips 40 is different.
  • the number z of the auxiliary grids 20 is less than or equal to 66.
  • the number z of the auxiliary grids 20 is less than or equal to 64.
  • the number z of the auxiliary grids 20 is set to be greater than or equal to 0.1754x2-7.2048x +115.26. That is, the number z of the auxiliary grids 20 is not only less than or equal to 0.0828x2-3.7862x +100.26, but also greater than or equal to 0.1754x2-7.2048x +115.26.
  • the number z of auxiliary grids 20 is less than or equal to 66 and greater than or equal to 51.
  • the number z of auxiliary grids 20 is less than or equal to 64 and greater than or equal to 49.
  • the number z of the auxiliary grids 20 is set to be greater than or equal to 0.1754x 2 -7.2048x+115.26, so as to further limit the range of the number z of the auxiliary grids 20 when the number x of the welding strips 40 is different, thereby further improving the photoelectric conversion efficiency of the solar cell.
  • FIG 5 there is shown a first schematic diagram of the structure of the battery cell described in the embodiment of the present application; referring to Figure 6, there is shown a second schematic diagram of the structure of the battery cell described in the embodiment of the present application; referring to Figure 7, there is shown a schematic diagram of the structure of the joining point described in the embodiment of the present application; referring to Figure 8, there is shown a first schematic diagram of the bonding point described in the embodiment of the present application; referring to Figure 9, there is shown a second schematic diagram of the bonding point described in the embodiment of the present application; referring to Figure 10, there is shown a top view of the battery cell described in the embodiment of the present application.
  • the main grid is not provided on the surface of the battery cell.
  • the ohmic contact between the welding strip 40 and the secondary grid 20 is The soldering tape 40 is separated from the auxiliary grid 20, which results in a decrease in the photoelectric conversion efficiency of the cell and the reliability of the cell cannot meet the requirements.
  • a junction point 30 is provided at the connection between the welding strip 40 and the auxiliary grid 20 , wherein the welding strip 40 is electrically connected to the auxiliary grid 20 through the junction point 30 .
  • a junction point 30 is provided at the connection between the welding ribbon 40 and the auxiliary grid 20, and the welding ribbon 40 is electrically connected to the auxiliary grid 20 through the junction point 30, so that the auxiliary grid 20 and the welding ribbon 40 are connected through the junction point 30.
  • junction 30 in the embodiment of the present application is conductive.
  • the junction 30 can be screen-printed on the surface of the battery cell 10 using metal paste.
  • the metal paste can be silver paste, which has better conductivity.
  • the metal paste in the embodiment of the present application can also be other metal pastes.
  • the welding strip 40 can be directly welded to the auxiliary grid 20, or as shown in Figure 7, a joint point 30 can be set at the connection between the welding strip 40 and the auxiliary grid 20, and the welding strip 40 can be electrically connected to the auxiliary grid 20 through the joint point 30.
  • the auxiliary grid 20 at the junction 30 includes two, and the two auxiliary grids 20 are arranged at intervals along the second direction B.
  • the projections of the two auxiliary grids 20 at least partially overlap with the junction 30, and the welding strip 40 passes between the two auxiliary grids 20 and is electrically connected to the junction 30, so that the welding strip 40 is electrically connected to the auxiliary grid 20 through the junction 30.
  • the projections of the two auxiliary grids 20 at least partially fall into the junction 30 and are electrically connected to the junction 30.
  • the projections of the two auxiliary grids 20 at least partially overlap with the projection of the junction 30.
  • the welding strip extends along the first direction A and passes between the two auxiliary grids 20, and the welding strip 40 is electrically connected to the junction 30.
  • the width of the junction 30 is greater than the width of the secondary grid 20 .
  • the width of the joint 30 is set to be greater than the width of the auxiliary grid 20, and the welding strip 40 is connected to the auxiliary grid 20 through the joint 30, so that the auxiliary grid 20 and the welding strip 40 can be improved. The reliability of the connection between them.
  • the joint 30 is narrow at both ends and wide in the middle.
  • the width in the middle of the junction 30 is relatively greater than the width at both ends of the junction 30. That is, along the second direction B, the width at both ends of the junction 30 is narrower, and the width in the middle is wider.
  • the reliability of the connection between the soldering ribbon 40 and the junction 30 is improved, thereby improving the photoelectric conversion efficiency of the cell and improving the reliability of the cell.
  • the width of the first gap between two adjacent welding strips 40 is set to be greater than the width of the adhesive point 50.
  • the solder strip 40 is bonded to the surface of the battery cell 10 by means of the adhesive point 50.
  • the adhesive point 50 may be made of a shadowless adhesive, also known as a photosensitive adhesive or a UV curing adhesive, or may be made of a thermosetting adhesive.
  • the adhesive point 50 may also be made of other types of adhesive.
  • the present application does not impose too many restrictions on the specific type of adhesive used by the adhesive point 50. In actual use, technicians may select a suitable adhesive as needed.
  • the glue used for the adhesive point 50 is generally an insulating material, and along the first direction A, the width of the first gap between two adjacent solder strips 40 is set to be greater than the width of the adhesive point 50. This allows the adhesive point 50 to be set between two adjacent solder strips 40, avoiding the setting of the adhesive point 50 from affecting the reliability of the electrical connection between the solder strip 40 and the auxiliary grid 20.
  • each solder strip 40 is connected to the battery cell 10 via a plurality of adhesive dots 50 , and the plurality of adhesive dots 50 are arranged along the first direction A at intervals.
  • each soldering ribbon 40 is connected to the surface of the battery cell 10 through a plurality of adhesive points 50 to enhance the reliability of the connection of the soldering ribbon 40.
  • the plurality of adhesive points 50 are arranged at intervals along the first direction A, and the soldering ribbon 40 is bonded to the plurality of adhesive points 50 along the first direction A, so that the soldering ribbon 40 can extend along the first direction A.
  • the plurality of adhesive dots 50 corresponding to two adjacent solder strips 40 may be staggered in the second direction B. As shown in FIG8 , the plurality of adhesive dots 50 corresponding to two adjacent solder strips 40 may also be correspondingly arranged in the second direction B. In the embodiment of the present application, there are no excessive restrictions on the specific arrangement of the adhesive dots 50, as long as the width of the first gap between the two adjacent solder strips 40 along the first direction A is set to be greater than the width of the adhesive dots 50.
  • At least a portion of the plurality of adhesive dots 50 completely avoids the plurality of auxiliary grids 20 .
  • At least a portion of the plurality of adhesive dots 50 is completely away from the plurality of auxiliary grids 20 , thereby avoiding as much as possible the arrangement of the adhesive dots 50 affecting the reliability of the electrical connection between the soldering strip 40 and the auxiliary grid 20 .
  • At least a portion of the plurality of adhesive dots 50 may also be bonded to the plurality of auxiliary grids 20. Only a portion of the adhesive dots 50 is bonded to the auxiliary grid 20, and the other portion avoids the auxiliary grid 20, thereby minimizing the effect of the arrangement of the adhesive dots 50 on the reliability of the electrical connection between the soldering strip 40 and the auxiliary grid 20.
  • the width of the welding strip 40 along the second direction B is greater than or equal to 0.19 mm and less than or equal to 0.36 mm.
  • the width of the soldering ribbon 40 is set to be greater than or equal to 0.19 mm and less than or equal to 0.36 mm along the second direction B. Specifically, the width of the soldering ribbon 40 can be set to 0.19 mm, 0.22 mm, 0.25 mm, 0.28 mm, 0.32 mm, 0.36 mm, and so on.
  • the battery string included in the photovoltaic module has the same structure as the battery string described in the above embodiment, and its beneficial effects are also similar, which will not be repeated here.

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  • Photovoltaic Devices (AREA)

Abstract

La présente demande se rapporte au domaine technique des modules photovoltaïques, et divulgue plus particulièrement une chaîne de batteries et un module photovoltaïque. La chaîne de batteries comprend : une cellule sans barre omnibus ; une pluralité de doigts, la pluralité de doigts étant agencés sur la surface de la cellule à des intervalles donnés dans une première direction ; et une pluralité de rubans de soudure, la pluralité de rubans de soudure étant agencés à des intervalles donnés dans une seconde direction et connectés à la surface de la cellule, chaque ruban de soudure étant au moins connecté à une partie de la pluralité de doigts, et la seconde direction étant perpendiculaire à la première direction. En définissant x comme le nombre de rubans de soudure, et y comme la largeur des rubans de soudure dans la seconde direction, x et y satisfont à la relation : -0,0105 x + 0,4186 ≤ y ≤ -0,01 x + 0,48, l'unité de x étant une pièce, et l'unité de y étant le mm.
PCT/CN2024/088945 2023-06-28 2024-04-19 Chaîne de batteries et module photovoltaïque Ceased WO2025001453A1 (fr)

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Application Number Priority Date Filing Date Title
CN202310778450.2 2023-06-28
CN202310778450.2A CN116741864A (zh) 2023-06-28 2023-06-28 一种电池串及光伏组件

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WO2025001453A1 true WO2025001453A1 (fr) 2025-01-02

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CN116741864A (zh) * 2023-06-28 2023-09-12 隆基绿能科技股份有限公司 一种电池串及光伏组件
CN117199160A (zh) * 2023-09-13 2023-12-08 隆基绿能科技股份有限公司 一种光伏组件
CN119545921B (zh) * 2024-04-08 2025-08-12 隆基绿能科技股份有限公司 电池串及光伏组件

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WO2022033322A1 (fr) * 2020-08-10 2022-02-17 苏州阿特斯阳光电力科技有限公司 Module photovoltaïque
CN218632070U (zh) * 2022-09-13 2023-03-14 苏州阿特斯阳光电力科技有限公司 电池串和具有其的光伏组件
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JP2013243415A (ja) * 2013-09-12 2013-12-05 Sanyo Electric Co Ltd 太陽電池モジュールの製造方法
WO2022033322A1 (fr) * 2020-08-10 2022-02-17 苏州阿特斯阳光电力科技有限公司 Module photovoltaïque
CN218632070U (zh) * 2022-09-13 2023-03-14 苏州阿特斯阳光电力科技有限公司 电池串和具有其的光伏组件
CN116741864A (zh) * 2023-06-28 2023-09-12 隆基绿能科技股份有限公司 一种电池串及光伏组件

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