WO2025209327 - MANUFACTURING METHOD FOR TOPCON BATTERY HAVING BACK SE STRUCTURE
National phase entry is expected:
Publication Number
WO/2025/209327
Publication Date
09.10.2025
International Application No.
PCT/CN2025/085599
International Filing Date
28.03.2025
Title **
[English]
MANUFACTURING METHOD FOR TOPCON BATTERY HAVING BACK SE STRUCTURE
[French]
PROCÉDÉ DE FABRICATION DE BATTERIE TOPCON AYANT UNE STRUCTURE DE SE ARRIÈRE
[Chinese]
一种背面SE结构TOPCon电池的制作方法
Applicants **
CHANGZHOU SHICHUANG ENERGY CO., LTD
Inventors
REN, Changrui
ZHANG, Wenchao
DONG, Jianwen
FU, Liming
Priority Data
202410393796.5
02.04.2024
CN
Application details
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International Searching Authority |
CNIPA
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1576 | |
| EPO | Filing, Examination, Granting | 11576 | |
| Japan | Filing, Examination, Granting | 1938 | |
| South Korea | Filing, Examination, Granting | 1672 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
21,502
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Abstract[English]
The present invention provides a manufacturing method for a TOPCon battery having a back SE structure. The method comprises forming a high-concentration thick-Poly structure in a metal region of an SE structure, and forming a low-concentration thin-Poly structure in a non-metal region. The present invention ensures both the thickness difference and the concentration difference of the structure manufactured by the present method; and the high-concentration thick-Poly metal region ensures contact performance of slurry, and the low-concentration thin-Poly structure in the non-metal region can reduce parasitic absorption and free carrier absorption, thus improving the short-circuit current.[French]
La présente invention concerne un procédé de fabrication d'une batterie TOPCon ayant une structure de SE arrière. Le procédé consiste à former une structure épaisse Poly à haute concentration dans une région métallique d'une structure de SE, et à former une structure mince Poly à faible concentration dans une région non métallique. La présente invention garantit à la fois la différence d'épaisseur et la différence de concentration de la structure fabriquée par le procédé selon la présente invention ; et la région métallique épaisse Poly à haute concentration assure des performances de contact de suspension, et la structure mince Poly à faible concentration dans la région non métallique peut réduire l'absorption parasite et l'absorption de porteurs libres, améliorant ainsi le courant de court-circuit.[Chinese]
本发明提供了一种背面SE结构TOPCon电池的制作方法，本发明方法在SE结构的金属区形成高浓度+厚poly，非金属区形成低浓度+薄poly的结构。采用以上方法制成的结构既保证了厚度差异，同时也满足了浓度差异，高浓度和厚poly的金属区保证了浆料的接触性能，非金属区的薄poly和低浓度也可以降低寄生吸收和自由载流子吸收，从而提高短路电流。