Low-temperature silver paste, preparation method and HJT battery

The low-temperature silver paste comprises the following preparation raw materials in parts by weight: 88%-94% of silver powder, 1%-2.5% of fluorinated polyamide acid, 0.1%-1.0% of a curing agent, 5%-10% of a first solvent and 0%-1.5% of an organic auxiliary agent. After the fluorinated polyamide acid is added into the low-temperature silver paste, the silver paste has excellent aging resistance, conductivity and thixotropy and can be used for printing precise circuit patterns. The invention further discloses a preparation method of the low-temperature silver paste and an HJT battery. 本发明公开了一种低温银浆，包括以下重量份的制备原料：银粉88％-94％，氟化聚酰胺酸1％-2.5％，固化剂0.1％-1.0％，第一溶剂5％-10％及有机助剂0％-1.5％。本发明通过在低温银浆中添加氟化聚酰胺酸后，使得银浆具有优良的抗老化性、导电性和优异的触变性，可用于精密电路图案的印刷。本发明还公开了一种低温银浆的制备方法和HJT电池。