CN203839155U - High-power-density inductor - Google Patents

Abstract

The utility model relates to the field of inductor manufacturing, in particular to a high-power-density inductor. The high-power-density inductor comprises a magnetic ring, a framework and frequency pins. The high-power-density inductor is characterized in that flat copper wire coils are wound around the rectangular magnetic ring, the rectangular magnetic ring with the flat copper wire coils is fixed to the framework, the frequency pins are fixed to the four corners of the framework, and the two ends of each flat copper wire coil are welded to the frequency pins which are closest on the framework respectively. According to the high-power-density inductor, copper wires are changed into flat wires with certain thickness from traditional round wires, the coils can be closely wound and can allow large current to pass, power density is high, the leakage inductance of the coils is small, and the EMI resisting effect is good; the magnetic ring of the inductor is changed into a whole rectangle from two inverted U shapes in the prior art, the magnetic flux leakage of the magnetic ring is small, the inductance value is high, and the EMI resisting effect is better; the inductor is formed by winding the flat copper wires instead of a plurality of strands of round copper wires in the prior art, so that the size of the inductor is reduced, and the inductor can be extremely thin.

Description

High power density inductance

Technical field

The utility model relates to inductance field, says in detail it is a kind of ultra-thin high-capacity density inductance.

Background technology

Well-known: along with Switching Power Supply is to high frequency, high power density, high reliability, high integration development, EMI inductance have been proposed to higher designing requirement.

Inductance is one of passive component often using in Switching Power Supply product.In pursuing the effort that electric product is light, thin, short, little, it is but an insoluble problem that the volume of thinking reduced inductance is taken into account electrical characteristic simultaneously always.

Tradition is with the inductance of circular copper cash design, because copper cash is the circle coil the form most volumes in inductance that will account for that cause reeling, and the space that can form between circumference and circumference in a few stacked coils increases, cause inductance leakage inductance to increase, have a strong impact on EMI filter effect.When increasing input current, just must increase copper wire winding number of share of stock, and then more increase inductance leakage inductance and reduced area of dissipation.

Summary of the invention

The purpose of this utility model is just to overcome prior art deficiency, provides that a kind of cost is low, power density is high, leakage inductance is little, the inductance of thickness ultrathin.

The utility model solves the technical scheme that its technical problem adopts: a kind of high power density inductance, comprise magnet ring, skeleton, frequency pin, it is characterized in that, flat copper wire coil winding is to rectangle magnet ring, rectangle magnet ring with flat copper wire coil is fixed on skeleton, frequently pin is fixed on four angles of skeleton, and the two ends of flat copper wire coil are welded on respectively on frequency pin nearest on skeleton.

The utility model also can be achieved by the following measures: flat copper wire coil is closely wound and is formed by a thin slice copper cash parallel circle circle.Rectangle magnet ring is an integral body, has two flat copper wire coils respectively on two long limits of rectangle magnet ring.

The beneficial effects of the utility model are, copper cash changes certain thickness flat wire into by traditional round line, coil can be close around, can lead to super-high-current, power density is high, coil leakage inductance is little simultaneously, anti-EMI is effective; Inductance magnet ring changes an Integral rectangular into by 2 ∏ types of tradition, and magnet ring leakage field is few, and inductance value is high, anti-EMI better effects if; Inductance changes flat copper wire coiling into by the circular copper cash of traditional multiply, and volume reduces, and inductance can be accomplished ultrathin.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is front view of the present utility model.

Fig. 2 is end view of the present utility model.

Fig. 3 is vertical view of the present utility model.

Fig. 4 is skeleton front view of the present utility model.

Fig. 5 is skeleton end view of the present utility model.

Fig. 6 is skeleton vertical view of the present utility model.

Fig. 7 is rectangle magnet ring vertical view of the present utility model.

Fig. 8 is assembling schematic diagram of the present utility model.

1. skeletons in figure, 2. coil, 3. magnet ring, 4. frequency pin.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, to help understanding content of the present utility model.

In Fig. 1-Fig. 8, the new flat copper wire coil 2 of this practicality is wound on rectangle magnet ring 3, rectangle magnet ring 3 with flat copper wire coil 2 is fixed on skeleton 1, flat copper wire coil 2 is closely wound and is formed by a thin slice copper cash parallel circle circle, flat copper wire coil 2 numbers of turn are determined according to the length of skeleton 1, rectangle magnet ring 3 is an integral body, there are two flat copper wire coils 2 respectively on two long limits of rectangle magnet ring 3, skeleton 1 will be according to the overall dimension design of rectangle magnet ring 3, must guarantee flat copper wire coil 2 on skeleton 1 close around, rectangle magnet ring 3 is an integral body, its size determines according to inductance value.Frequently pin 4 is fixed on four angles of skeleton 1, and the two ends of flat copper wire coil 2 are welded on respectively on frequency pin 4 nearest on skeleton 1.When the utility model is made at inductance, first rectangle magnet ring 3 is fixed on coil winding machine, flat copper wire, directly around to rectangle magnet ring 3, is then placed into the rectangle magnet ring 3 with flat copper wire coil 2 on skeleton 1, and the two ends of last flat copper wire coil 2 are welded to respectively on nearest frequency pin 4.

Claims (1)

1. a high power density inductance, comprise magnet ring, skeleton, frequency pin, it is characterized in that: flat copper wire coil winding is to rectangle magnet ring, rectangle magnet ring with flat copper wire coil is fixed on skeleton, frequently pin is fixed on four angles of skeleton, the two ends of flat copper wire coil are welded on respectively on frequency pin nearest on skeleton, flat copper wire coil is closely wound and is formed by a thin slice copper cash parallel circle circle, rectangle magnet ring is an integral body, has two flat copper wire coils respectively on two long limits of rectangle magnet ring.