High-power manganese-zinc ferrite magnetic core for automobile charging piles and preparation method thereof

The invention discloses a high-power manganese-zinc ferrite magnetic core for automobile charging piles, comprising main ingredients and auxiliary ingredients; the main ingredients include Fe2O3, MnO and ZnO; the auxiliary ingredients include calcium oxide, nickel oxide, bismuth oxide, and molybdenum oxide; the total quantity of the auxiliary ingredients is 0.20-0.90% by weight of that of the main ingredients. A preparation method of the high-power manganese-zinc ferrite magnetic core comprises the steps of weighing materials; doping; pressing to obtain blanks; discharging the blanks; sintering. Through the special doping process and sintering process curves, high magnetic conductivity is imparted to the core both under negative temperature and high temperature, the Curie temperature is high, and the core has good temperature rise characteristic, has flat temperature curve, low power consumption at high temperature and high working environment adaptability, is more widely applicable for users, is smaller in s