MnZn ferrite material and magnetic core for energy-saving lamp and electronic ballast

Abstract

The invention relates to a MnZn soft ferrite material and magnetic core used for an integrated energy-saving lamp and an electronic ballast; wherein the soft ferrite material comprises the Fe2O3 of 49mol% to 53 mol% and the MnO of 34mol% to 40mol%, and the rest ZnO. A first accessory component of CaCO3, one or both of the second accessory components of SiO2 and WO3, one but not only limited to one of the third accessory components of SnO2, TiO2, Nb2O5, V2O5, CoO are added to the principal component. The invention has the advantages that the MnZn soft ferrite magnetic core can be used for, but not only limited to the integrated energy-saving lamp and the electronic ballast field.

Description

technical field [0001] The invention relates to the technical field of electronic materials, in particular to ferrite magnetic materials used in energy-saving lamps, electronic ballasts and related fields. Background technique [0002] In daily lighting, incandescent lamps and fluorescent lamps with magnetic ballasts are often used. But these two types of lighting have their disadvantages: incandescent lamps mainly rely on heating tungsten filaments to emit light, 90% of the electric energy is used to generate unnecessary heat, and only 10% of the energy is converted into the required light energy, and the energy consumption per unit luminous flux is high. ; For fluorescent lamps with inductive ballasts, inductive ballasts consume a lot of copper, are bulky and heavy, and produce audible noise. Nearly 1 / 4 of the electric energy is consumed by inductive ballasts. The luminous efficiency of electric energy is low. [0003] Based on the above shortcomings of traditional light...

AI Technical Summary

Problems solved by technology

But these two types of lighting have their disadvantages: incandescent lamps mainly rely on heating tungsten filaments to emit light, 90% of the electric energy is used to generate unnecessary heat, and only 10% of the energy is converted into the required light energy, and the energy consumption per unit luminous flux is high. ; For fluorescent lamps with inductive ballasts, inductive ballasts consume a lot of copper, are bulky and heavy, and produce audible noise. Nearly 1 / 4 of the electric energy is consumed by inductive ballasts. The luminous efficiency of electric energy is low

The invention obtains a lower power loss of 260KW / m 3 (100°C, 100kHz, 200mT) and a higher saturation magnetic flux density of 425mT (100°C), this invention needs to add nano-scale ultrafine oxides as additives, which will increase the cost of materials to a certain extent; in addition, its 100°C When the saturation magnetic flux density is high, in integrated energy-saving lamps or electronic ballasts, Bs is not as high as possible, if it does not match the circuit, it will cause the phenomenon of "undersaturation" of the pulse drive transformer core Occurs, cannot normally drive the switching tube to turn off or turn on in time

Proposed in the patent application CN 200510033614.0 in the main formula Mn 0.629 Zn 0.30 Fe 2.071 o 4 Add an appropriate amount of V 2 o 5 , CoO, Bi 2 o 3 and other additives to prepare low-loss MnZn soft magnetic ferrite materials. Its Curie temperature is about 200°C and its saturation flux density is as high as 500mT. However, it also has the problem of high saturation flux density, which is not very suitable for use. As a material in the field of energy-saving lighting

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