Power inductor core with closed magnetic circuit structure

Abstract

The invention relates to a power inductor core with a closed magnetic circuit structure. The power inductor core comprises a magnetic base and a magnetic cover, wherein the magnetic cover is fastened to the magnetic base; a magnetic core integrated with the magnetic base is arranged at the center part of the magnetic base; a groove for placing a coil is formed in the periphery of the magnetic core; notches for leading out a coil connector are formed in the edge parts of the groove; and gaps for installing a terminal are reserved at the parts, corresponding to the notches, of the magnetic cover. The invention provides a low-loss and high-current Ni-Zn ferrite core applied to a design of a power inductor product; the design of the low-loss power inductor is achieved; and the product achieves simultaneous matching of low loss, high power and production automation.

Description

technical field [0001] The invention relates to an inductor, in particular to a power inductor magnetic core with a closed magnetic circuit structure. Background technique [0002] In the application field of electronic power inductor products, power inductor products require large current and low power consumption, which requires the magnetic core saturation induction (Bs) of power inductors to be as large as possible. Moreover, power inductor products must also have sufficient characteristics to prevent interference with other surrounding electronic components, and have less magnetic leakage outflow. In addition, under the current trend of competition in the electronic product market, the production of products is required to be transformed to automation as much as possible to achieve miniaturization, low energy consumption, and low-cost production methods. [0003] At present, the magnetic core of the power inductor adopts the structure of the I-shaped magnetic core, whi...

AI Technical Summary

Problems solved by technology

[0003] At present, the magnetic core of the power inductor adopts the structure of the I-shaped magnetic core, which is combined with the magnetic ring (such as Figure 1A-1D As shown), the shielding effect is not good, the performance of anti-EMI electromagnetic interference is poor, and the magnetic flux leakage is large

To achieve the minimum power consumption coefficient and maximum power transmission, the structural design of the magnetic core must require high precision and good coordination, which increases the complexity of the production of the magnetic core and makes the magnetic core unfavorable for mass production and Use, bring greater trouble to production

[0004] At present, it is difficult to achieve the simultaneous matching of low power consumption, high power and production automation in the design of power inductor cores

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