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1.发明公开
公开(公告)号：EP4307394A1
公开(公告)日：2024-01-17
申请号：EP21940511.5
申请日：2021-11-12
发明人： FANG, Chaoyan , HE, Yue , GUO, Shuai , REN, Hailiang , REN, Yong , CHEN, Deshuang , XU, Jun , JIN, Zhihong
IPC分类号： H01L31/0216 , H01L31/068 , H01L31/18
摘要： Provided in the present invention are a PERC battery back passivation structure, and a PERC battery and a preparation method therefor. The PERC battery back passivation structure comprises a crystalline silicon oxide layer, which is arranged on the back face of a silicon substrate. Further provided in the present invention are a PERC battery back passivation structure and a PERC battery comprising same. The PERC battery back passivation structure comprises a first crystalline silicon oxide layer, a gallium oxide layer, a second crystalline silicon oxide layer and at least two back-face silicon nitride layers, which are sequentially stacked on the back face of the silicon substrate.
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公开(公告)号：EP4324881A1
公开(公告)日：2024-02-21
申请号：EP22809307.6
申请日：2022-06-30
发明人： HU, Jiangping , LI, Yuping , JIN, Zhihong
摘要： The present disclosure provides an injection molding magnetic material and a preparation method thereof. The injection molding magnetic material includes: 80 to 85 parts of a magnetic powder; 10 to 15 parts of a polymer binder; 0.5 to 1 part of a first coupling agent; 0.5 to 1 part of a second coupling agent; 2 to 5 parts of wollastonite; and 0.1 to 1 part of an auxiliary agent, in terms of part by weight. The injection molding magnetic material of the application can effectively improve the interface bonding effect between components by filling wollastonite on the surface of the injection molding magnetic material. At the same time, the use of an auxiliary agent and wollastonite can ensure the formability and wear resistance of the injection molding magnetic material. The first coupling agent can improve the compatibility between the magnetic powder and the binder, and the second coupling agent can improve the adhesion of the wollastonite, and improve the bonding force between the wollastonite and the magnetic powder, thereby improving the wear resistance of the injection molding magnetic material. In the above proportioning range, each component can interact synergistically to improve the interface bonding effect therebetween, so as to further improve the wear resistance of the injection molding magnetic material.
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公开(公告)号：EP4227964A1
公开(公告)日：2023-08-16
申请号：EP21901923.9
申请日：2021-04-21
发明人： JIN, Zhihong , HAN, Xianghua , HU, Jiangping , XU, Jun
摘要： Soft magnetic powder, a preparation method therefor, and a use thereof. The preparation method comprises: (1) respectively independently performing surface silane coupling and silicon nitriding treatment on first magnetic powder, second magnetic powder, and third magnetic powder to obtain first magnetic powder, second magnetic powder, and third magnetic powder of which the surfaces are coated with compound films of -Si-N- chemical bonds; and (2) mixing the first magnetic powder, the second magnetic powder, and the third magnetic powder of which the surfaces are coated with the compound films of the -Si-N- chemical bonds, so as to obtain the soft magnetic powder.
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公开(公告)号：EP4206160A1
公开(公告)日：2023-07-05
申请号：EP21912739.6
申请日：2021-04-25
发明人： YANG, Wuguo , HE, Zhenyu , SHENTU, Jinang , FANG, Shengxiang , WU, Xiangliang , JIN, Zhihong
摘要： Disclosed are a permanent magnet ferrite material and a preparation method therefor. The permanent magnet ferrite material comprises a main phase, and the general formula of the main phase is: A 1-x-y Ca x La y Fe 3+ 2n-z-a Fe 2+ a Co z O 19 , wherein A comprises Sr or a combination of Sr and Ba; 0.25≤x≤0.45; 0.40≤y≤0.55; 0.25≤z≤0.40; 0
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公开(公告)号：EP4199016A1
公开(公告)日：2023-06-21
申请号：EP21827559.2
申请日：2021-11-05
发明人： HU, Jiangping , JIN, Zhihong
IPC分类号： H01F41/02
摘要： Provided are a surface treatment method of rare earth magnetic powder, an injection molding rare earth magnetic material and a preparation method thereof. The above surface treatment method includes: step S1, adding rare earth magnetic powder to weak acid solution, as to weakly acidify the surface of the rare earth magnetic powder, to form weakly acidified magnetic powder, herein a weak acid in the weak acid solution is an inorganic weak acid with an acidity coefficient pKa value greater than 4.5 and/or an organic weak acid with an acidity coefficient greater than 1.0; step S2, phosphating the weakly acidified magnetic powder with phosphating solution, to form phosphating magnetic powder; and step S3, mixing the phosphating magnetic powder with a coupling agent, as to coupling-treat the phosphating magnetic powder, and then drying, to obtain the rare earth magnetic powder after surface treatment. The present disclosure solves a problem in an existing technology that that the rare earth magnetic powder has weak oxidation resistance, so that the rare earth magnetic material after injection molding is poor in magnetic performance.
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