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CN-121985598-A - Battery assembly and photovoltaic system

CN121985598ACN 121985598 ACN121985598 ACN 121985598ACN-121985598-A

Abstract

The application is suitable for the technical field of photovoltaics, and provides a battery assembly and a photovoltaic system, which comprise a plurality of battery strings, wherein the battery strings are sequentially arranged in a first direction, the arrangement width of the battery strings in the first direction is a first width, each battery string comprises a plurality of battery pieces sequentially arranged in a second direction, each battery piece has a first thickness, and a relational expression is established between the distance L1 between the battery strings and the geometric characteristics (such as the thickness of the battery pieces) of the battery pieces, the number of the battery strings and the arrangement total width of the battery strings, wherein L is the first width, the unit mm, n is the number of the battery strings, B is 135 multiplied by 182.2, and h is the first thickness. Therefore, the spacing range of the corresponding battery strings can be adapted according to the thickness of the battery pieces, the number of the battery strings and the arrangement total width of the battery strings, the arrangement mode of the components meeting the requirements can be rapidly designed, and the production efficiency of products is improved.

Inventors

  • LUO FEI

Assignees

  • 浙江爱旭太阳能科技有限公司
  • 天津爱旭太阳能科技有限公司
  • 珠海富山爱旭太阳能科技有限公司
  • 山东爱旭太阳能科技有限公司

Dates

Publication Date
20260505
Application Date
20260210

Claims (12)

  1. 1. The battery assembly is characterized by comprising a plurality of battery strings, wherein the battery strings are sequentially arranged in a first direction, the arrangement width of the battery strings in the first direction is a first width, each battery string comprises a plurality of battery pieces sequentially arranged in a second direction, each battery piece has a first thickness, and the distance L1 among the battery strings satisfies the following formula of-1L 1- (L-n multiplied by B/h)/(n-1) 1, wherein L is the first width, n is the number of the battery strings, B is 135 multiplied by 182.2, h is the first thickness, and L is less than or equal to 1.
  2. 2. The battery assembly of claim 1, wherein a plurality of the battery strings partially overlap in a first direction to form an overlap region.
  3. 3. The battery assembly of claim 2, wherein the overlap region has a width in the first direction of greater than or equal to 1mm and less than or equal to 3mm.
  4. 4. The battery assembly of claim 1, wherein a plurality of the battery strings are spaced apart in a first direction.
  5. 5. The battery assembly of claim 4, wherein a spacing distance between a plurality of the battery strings is greater than or equal to 0.5mm and less than or equal to 1.5mm.
  6. 6. The battery assembly of claim 1, wherein a plurality of the battery plates are disposed partially overlapping in the second direction.
  7. 7. The battery assembly of claim 1, wherein a plurality of the battery plates are spaced apart in the second direction.
  8. 8. The battery assembly of claim 1, wherein the distance between the battery strings decreases according to the decrease in the thickness of the battery cells.
  9. 9. The battery assembly of claim 8, wherein the distance between the battery strings is reduced by a first tolerance and the thickness of the battery cells is reduced by a second tolerance.
  10. 10. The battery assembly of claim 1, wherein the thickness of the battery sheet is greater than or equal to 0.11mm and less than or equal to 0.15mm.
  11. 11. The battery assembly of claim 1, wherein the battery tab is a back contact battery.
  12. 12. A photovoltaic system comprising the cell assembly of any one of claims 1-11.

Description

Battery assembly and photovoltaic system Technical Field The application belongs to the technical field of photovoltaics, and particularly relates to a battery assembly and a photovoltaic system. Background A solar cell is a device that uses solar energy to directly convert light energy into electric energy through a photoelectric effect or a photochemical effect. Solar cells include segmented solar cells, which are currently fabricated by subjecting a solar cell, on which various film layers have been formed, to a dicing process to divide the entire solar cell into at least two segmented solar cells, for example, two half-sheets. And then, using the segmented solar cell for manufacturing a photovoltaic module. Because the voltage of monolithic battery piece output is lower, can establish ties the battery piece of a certain amount in general and form the battery cluster, the distance between the battery cluster needs to set up according to the specification of battery piece, and the interval of cluster interval is too little, and the precision of equipment can not accurate control, and battery assembly changes and stops at production line and all will lead to the interval to take place the displacement simultaneously, causes between the battery piece and the piece, and the cluster interval is too big, and the dead zone area increases, and the power of battery assembly of unit area reduces. The lack of design methods for the spacing between battery strings in the prior art results in the problem of lower efficiency of current battery assemblies. Disclosure of Invention The application provides a solar cell, which aims to solve the problem of lower efficiency of the current cell assembly caused by the lack of a design method aiming at the distance between cell strings in the prior art. The application is realized in such a way that the battery assembly comprises a plurality of battery strings, wherein the battery strings are sequentially arranged in a first direction, the arrangement width of the battery strings in the first direction is a first width, each battery string comprises a plurality of battery pieces sequentially arranged in a second direction, each battery piece has a first thickness, and the distance L1 among the battery strings satisfies the following formula of-1L 1- (L-n multiplied by B/h)/(n-1) <1, wherein L is the first width, n is the number of the battery strings, B is 135 multiplied by 182.2, h is the first thickness, and n is the unit mm. Optionally, a plurality of the battery strings are partially overlapped in the first direction to form an overlapped region. Optionally, the width of the overlapping area in the first direction is greater than or equal to 1mm and less than or equal to 3mm. Optionally, a plurality of the battery strings are arranged at intervals in the first direction. Optionally, a spacing distance between a plurality of the battery strings is greater than or equal to 0.5mm and less than or equal to 1.5mm. Optionally, a plurality of the battery pieces are partially overlapped in the second direction. Optionally, a plurality of the battery pieces are arranged at intervals in the second direction. Optionally, the distance between the battery strings is reduced in equal proportion according to the reduction of the thickness of the battery piece. Optionally, the distance between the battery strings is reduced by a first tolerance, and the thickness of the battery plate is reduced by a second tolerance. Optionally, the thickness of the battery sheet is greater than or equal to 0.11mm and less than or equal to 0.15mm. Optionally, the battery piece is a back contact battery. The application establishes a relational expression of-1 is less than or equal to L1- (L-n multiplied by B/h)/(n-1) <1 > by the distance L1 between the battery strings and the geometric characteristics of the battery pieces (such as the thickness of the battery pieces and the like), the number of the battery strings and the total arrangement width of the battery strings, wherein L is a first width, n is the number of the battery strings, B is 135 multiplied by 182.2, and h is the first thickness, and n is a unit of mm. Therefore, the spacing range of the corresponding battery strings can be adapted according to the thickness of the battery pieces, the number of the battery strings and the arrangement total width of the battery strings, the arrangement mode of the components meeting the requirements can be rapidly designed, and the production efficiency of products is improved. Drawings Fig. 1 is a schematic structural view of a first battery pack provided in the present application; FIG. 2 is a schematic view of a second battery assembly according to the present application; Fig. 3 is a schematic structural view of a third battery pack provided in the present application; Fig. 4 is a schematic structural view of a fourth battery pack provided in the present application. Detailed Description The present app