US 12,439,704 B2
Photovoltaic module, back sheet of photovoltaic module and manufacturing method of photovoltaic module
Daoyuan Chen, Jiangsu (CN); Wenjuan Xue, Jiangsu (CN); Yanfang Zhou, Jiangsu (CN); Shuang Zhao, Jiangsu (CN); and Jian Li, Jiangsu (CN)
Assigned to Jingao Solar Co., Ltd., Hebei (CN)
Appl. No. 17/614,310
Filed by JINGAO SOLAR CO., LTD., Hebei (CN)
PCT Filed Aug. 28, 2020, PCT No. PCT/CN2020/112082
§ 371(c)(1), (2) Date Nov. 24, 2021,
PCT Pub. No. WO2022/016662, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 202010712100.2 (CN), filed on Jul. 22, 2020; application No. 202010818096.8 (CN), filed on Aug. 14, 2020; and application No. 202010818105.3 (CN), filed on Aug. 14, 2020.
Prior Publication US 2022/0320356 A1, Oct. 6, 2022
Int. Cl. H10F 77/63 (2025.01); H10F 19/31 (2025.01); H10F 19/85 (2025.01); H10F 71/00 (2025.01)
CPC H10F 19/85 (2025.01) [H10F 19/31 (2025.01); H10F 71/00 (2025.01); H10F 77/63 (2025.01); Y02E 10/50 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A back sheet of a photovoltaic module, comprising:
a thermally conductive layer in a mesh shape and an insulating barrier layer,
wherein the thermally conductive layer comprises a skeleton section and a hollow section surrounded by the skeleton section,
wherein the thermally conductive layer is in a grid-like mesh pattern, the skeleton section comprises a plurality of sub-strip-shaped thermally conductive portions overlapped with battery cells, and the plurality of sub-strip-shaped thermally conductive portions overlap with main grids of the battery cells,
wherein the skeleton section further comprises a plurality of first strip-shaped thermally conductive portions extending in a first direction and a plurality of second strip-shaped thermally conductive portions extending in a second direction intersected with the first direction,
wherein at least part of the first strip-shaped thermally conductive portions and at least part of the second strip-shaped thermally conductive portions overlap with the gap between adjacent battery cells,
wherein the sub-strip-shaped thermally conductive portions extend in the second direction and space apart from the second strip-shaped thermally conductive portions in the first direction,
wherein the thickness of the thermally conductive layer is in the range of 0.01-1 mm, and
wherein the widths of the first strip-shaped thermally conductive portions and the widths of the second strip-shaped thermally conductive portions are in the range of 5-50 mm respectively,
wherein the thermally conductive layer comprises a polymeric resin and thermally conductive particles mixed in the polymeric resin,
wherein the thermally conductive layer is adjacent to the insulating barrier layer, and the thermally conductive layer and the insulating barrier layer are formed together by co-extrusion.