CN201037851Y - Multi-polarity power inductor - Google Patents

Abstract

A multi-polarity power inductor comprising: the coil assembly comprises a base body and a coil assembly, wherein the base body is made of any conductive or non-conductive material. The seat body is provided with a groove, and a plurality of through holes are arranged in the groove. The coil assembly is made of copper metal and is composed of a plurality of U-shaped wires. When two through holes between the two ends of the lead and the groove are connected in a penetrating manner, if the base body is made of a conductive material, the lead is necessarily covered with an insulating layer, and the wire sections of the two ends of the lead penetrating out of the base body form electric pins. The two electrical pins are covered with a tin layer, which is used to provide electrical connection of the power inductor to the circuit board of the applied electronic device.

Description

Multipolar Power Inductors

technical field

The utility model relates to an inductor, in particular to a multipolar power inductor.

Background technique

At present, power inductors have been used in high-current microprocessors, servers, display card interfaces, multi-core processors, workstations (work station) embedded computers, industrial computers, notebook computers, small communication machines or DC converters, etc. on various products. It can stabilize the voltage and current output to provide the power required by these electronic devices.

When early power inductors were used in power supplies, the internal resistance of power inductors was high, so when large currents (30-60 amperes) flowed, the power inductors were prone to high temperature and instability. In order to prevent the power inductor from being damaged due to high temperature and to run smoothly, it is necessary to add a cooling fan on the interface or supply end, or add a radiator around the power inductor to dissipate heat from the power inductor, thereby stabilizing the power inductor. The inductance will not cause saturation or crash and damage due to high temperature.

In order to solve the problem that the early power inductors are prone to high temperature, the structure of the power inductor is designed to consist of an iron core and a coil wound on the iron core. Due to its small size, this power inductor is a high current low loss impedance. When this kind of power inductor is used in high-current microprocessors and workstations, etc., when a large current flows (30-60 amperes of high current), the circuit board of the microprocessor must be electrically connected to two to six power inductors to disperse large currents. Because each power inductor can withstand a current of 5-10 amperes, the power inductor is not easy to generate heat, so the heat dissipation problem of the hardware interface can be solved without adding too many heat dissipation devices. And the inductive magnetic circuit will not be over-coupled. Since the number of such high-current and low-DC-impedance power inductors is large, it is easy to occupy the space on the circuit board and increase the production cost.

Therefore, in order to solve the problem of a power inductor with high current and low loss impedance, another power inductor is designed, as shown in Fig. Mylay 30 and the second iron core 40, the first iron core 10 has multiple groups of grooves 101 on the front and back, and the coil group 20 is arranged on the grooves 101. The coil set 20 is composed of a plurality of clamp-type terminals 201, and each terminal 201 has double U-shaped clips 2011. One end of the double U-shaped clips 2011 is connected together through the sheet body 2012 , and the double U-shaped clips 2011 are clamped to multiple groups of grooves 101 on the front and back sides of the first iron core 10 . The upper part of the double U-shaped clip 2011 is provided with an insulating pulley 30, and a second iron core 40 is disposed on the insulating pulley 30 to form a sheet-shaped power inductor.

When the chip-shaped power inductor is applied to a server or a microprocessor, if there are six terminals 201, when a large current of 30 to 60 amperes flows, the terminals 201 can disperse the large current, so that each terminal 201 can carry 5 ~10A current and reduces the high temperature generated by the power inductor, and does not take up the use area of the circuit board of the microprocessor. However, due to the complex structure of this chip power inductor, and the second iron core 40 generates static electricity due to environmental factors during assembly, when the second iron core 40 is just about to be assembled on the top of the insulating sheet, the insulating pull-on sheet 30 is easily When it is sucked up by the second iron core 40 , and the alignment between the second iron core 40 and the insulating pull-on piece 30 is deviated, it will not only cause inconvenience in assembly, but also easily lead to the generation of defective products.

Utility model content

Therefore, in view of the traditional defects, the utility model provides a power inductor with simple structure and easy assembly.

In order to achieve the above purpose, the multipolar power inductor of the present utility model includes: a seat body, a groove is arranged above it, and a plurality of through holes are arranged in the groove; a coil group is composed of a plurality of U-shaped wires The line segment extending from the two bends of the wire passes through the through hole, and extends outside the through hole to form two electrical pins.

Compared with the prior art, the power inductor provided by the utility model is not only simple in structure, but also easy to assemble.

Description of drawings

Figure 1 is an exploded schematic diagram of a traditional power inductor;

Fig. 2 is the exploded schematic view of the multipolar power inductor of the present invention;

Fig. 3 is a combined state schematic diagram of the multipolar power inductor of the present invention;

Fig. 4 is a schematic side sectional view of a multipolar power inductor of the present invention;

5 is a schematic diagram of the electrical connection between the multipolar power inductor of the present invention and the circuit board;

Fig. 6 is the schematic diagram of another embodiment of the utility model;

Figure 7 is a schematic cross-sectional view of Figure 6;

Fig. 8 is a schematic diagram of another embodiment of the utility model;

Fig. 9 is a schematic cross-sectional view of Fig. 8;

Fig. 10 is a schematic diagram of another embodiment of the utility model;

Fig. 11 is a schematic diagram of yet another embodiment of the utility model;

FIG. 12 is a schematic side sectional view of FIG. 11 .

[Description of main component symbols]

current technology:

First core 10

Coil set 20

Terminal 201

clip 2011

Sheet 2012

Insulated Mala Sheet 30

Second core 40

The utility model:

Seat 1, 3, 5, 7

Groove 11, 31, 51, 71

Through hole 12, 32, 52, 91

Coil groups 2, 4, 6, 8

Wire 21, 41, 61, 81

Insulation layer 22, 62

Electrical pins 23, 23', 43, 43', 63, 63'

Tin layers 24, 24', 44, 44', 64, 64'

Latching part 45, 45'

circuit board 9

Detailed ways

The technical contents of the present utility model are now described in detail in conjunction with the accompanying drawings.

FIG. 2 is an exploded schematic view of the multipolar power inductor of the present invention. As shown in the figure: the multipolar power inductor of the present invention includes: a base body 1 and a coil group 2; wherein:

The seat body 1 is a cuboid made of any conductive material such as Manganese zinc, Iron powder core, or Sendust core. A groove 11 is arranged above the seat body 1 , and a plurality of circular through holes 12 arranged in a straight line along the length of the groove 11 are arranged in the groove 11 .

The coil set 2 is made of circular copper metal and cut into a plurality of U-shaped wires 21 . The outer layer of the wire 21 is covered with an insulating layer 22 , and when the wire 21 passes through the two through holes 12 , the insulating layer 22 can prevent the wire 21 from contacting the inner walls of the two through holes 12 to form a short circuit state. The insulating layer 22 does not completely cover the line segment extending from the bend of the wire 21, so that the line segment is exposed to form electrical pins 23, 23', and then a layer of tin layer 24, 24 is covered on the two electrical pins 23, 23' ' (see Figure 4). The tin layers 24, 24' are used to provide electrical connection between the power inductor and the circuit board (not shown).

3 and 4 are schematic diagrams of the combination of multipolar power inductors and side sectional views of the present invention, respectively. As shown in the figure: when the seat body 1 of the present utility model is assembled with the coil group 2, after inserting the electrical pins 23, 23' of each wire 21 of the coil group 2 through the two through holes 12 of the groove 11, The electrical pins 23 , 23 ′ extending from the two bends of the wire 21 pass through the outside of the base body 1 . At this time, the insulating layer 22 on the wire 21 is located between the inner wall of the through hole 12 and the wire 21 , thereby preventing the wire 21 from contacting the inner wall of the through hole 12 to form a short circuit.

Fig. 5 is a schematic diagram of the electrical connection between the multipolar power inductor and the circuit board of the present invention. As shown in the figure: when the power inductor is electrically connected to the circuit board 3 of the power supply, the two electrical pins 23, 23' extending outside the base body 1 can pass through the through hole 91 of the circuit board 9. It is electrically connected with the copper foil on the circuit board 9 .

After the power inductor is electrically connected to the circuit board 3 of the server, the power inductor can stabilize voltage and current output to provide the power required by the back-end microprocessor (CPU). At the same time, when the microprocessor has a large current flowing through the power inductor, the power inductor can disperse the flowing current to reduce the heat source generated when the current flows through the power inductor. For example, the coil group 2 of the power inductor of the present utility model has four wires 21, when the large current flowing through the power inductor is 40 amperes, each wire 21 can withstand a current of 10 amperes, so the power inductor Not easy to produce high temperature damage.

6 and 7 are respectively another embodiment of the utility model and a schematic cross-sectional view of FIG. 6 . As shown in the figure: the multipolar power inductor of this embodiment includes: a base body 3 and a coil set 4, the base body 3 and the coil set 4 are roughly the same as the base body 1 and the coil set 2 in Fig. 2 to 5, the difference The base body 3 is a cuboid made of nickel-zinc (Nickel Zinc) non-conductive material. A groove 31 is provided above the seat body 3 , and a plurality of circular through holes 32 arranged in a straight line along the length of the groove 1 are arranged in the groove 31 .

The coil set 4 is made of circular copper or aluminum metal, and is cut into a plurality of U-shaped wires 41 . After the line segments extending from the two bends of the wire 41 pass through the two through holes 32 , the line segments exposed outside the base body 3 form two electrical pins 43 , 43 ′. The two electrical pins 43, 43' are covered with a tin layer 44, 44'. The tin layers 44, 44' are used to provide electrical connection between the power inductor and the circuit board (not shown).

8 and 9 are respectively another embodiment of the utility model and a schematic cross-sectional view of FIG. 8 . As shown in the figure: the multipolar power inductor of this embodiment includes: base body 5 and coil set 6, base body 5 and coil set 6 and base bodies 1, 3 and coil set 2 shown in Fig. 2 to 7, 4 are roughly the same, the difference is that the seat body 5 is made of manganese zinc (Manganese zinc), iron powder core (Ironpowder core), alloy iron core (Sendust core) any conductive or nickel zinc (Nickel zinc) different A cuboid made of conductive material. A groove 51 is provided above the seat body 5 , and a plurality of rectangular through holes 52 arranged in a straight line along the length of the groove 51 are arranged in the groove 51 .

The coil set 6 is made of sheet copper metal and cut into a plurality of U-shaped wires 61 . Wire 61 outer layer is covered with insulation layer 62 (if base body 5 is made by the non-conductive material of nickel zinc, then need not insulation layer 62), when wire 61 is connected with two through holes 52, insulation layer 52 can prevent The wire 61 is in contact with the inner walls of the two through holes 52 to form a short circuit state. The insulating layer 62 does not completely cover the line segment extending from the two bends of the wire 61, so that the line segment is exposed to form two electrical pins 63, 63', and the two electrical pins 63, 63' are covered with a layer of tin layer 64, 64', and after the two electrical pins 63, 63' pass through the through hole 52, the electrical pins 63, 63' can be bent at the bottom of the seat body 5, so that the tin layer 64 on the two electrical pins 63, 63' , 64' can be directly soldered on the copper foil (not shown in the figure) on the surface of the circuit board to form a surface mount component.

Fig. 10 is a schematic diagram of another embodiment of the present invention. As shown in the figure: when the seat body 1, 3, 5 and the coil group 2, 4, 6 are connected together, the wires 21, 41, 61 of the coil group 2, 4, 6 can follow the recesses of the seat body 1, 3, 5 In addition to the length arrangement of the slots 11, 31, 51, the wires 81 of the coil group 8 shown in the figure can also be stacked along the width of the groove 71 of the base body 7. This structure can shorten the length of the power inductor.

11 and 12 are yet another embodiment of the present utility model and a schematic side sectional view of FIG. 11 . As shown in the figure: the seat body 3 and the coil group 4 in this implementation are the same as those in Fig. 6 and 7, the difference is only that the electric pins 43, 43' of the wire 41 of the coil group 4 are provided with a plurality of long wires on the outer surface. The locking parts 45, 45' of the shaped raised strips. The cross-section of the locking parts 45, 45' is cross-shaped. When the pins 43, 43' of the wire 41 are inserted into the through hole 32 of the seat body 3, the locking parts 45, 45' are locked on the inner wall of the through hole 32. The wire 41 is firmly inserted into the through hole 32 .

The above-mentioned embodiments are only for the purpose of illustrating the utility model, rather than restricting the utility model. Those skilled in the art can make various equivalent structural changes without departing from the spirit and scope of the utility model. Within the scope of the utility model. The protection scope of the utility model is defined by the claims.

Claims (10)

1. A multipolar power inductor, comprising: The seat body is provided with a groove above it, and a plurality of through holes are arranged in the groove; The coil group is composed of a plurality of U-shaped wires, and the wire segments extending from the two bends of the wires pass through the through hole and extend outside the through hole to form two electrical pins. 2. The multipolar power inductor as claimed in claim 1, wherein the base body is made of any conductive material such as manganese zinc, iron powder iron core, alloy iron core or non-conductive material of nickel zinc. A made cuboid. 3 . The multipolar power inductor according to claim 1 , wherein the through holes are circular or rectangular in shape and arranged in a straight line along the length of the groove. 4 . 4 . The multipolar power inductor according to claim 1 , wherein the through holes are circular or rectangular in shape and arranged in stacks along the width of the groove. 5 . The multipolar power inductor according to claim 1 , wherein the coil group is made of circular or sheet-shaped copper metal material. 6 . The multipolar power inductor according to claim 1 , wherein the base body is made of conductive material, and an insulating layer is sheathed on the wires of the coil group. 7 . 7 . The multipolar power inductor according to claim 1 , wherein the electrical pins are covered with a layer of tin. 8 . 8. The multipolar power inductor as claimed in claim 1, wherein when the base body is not made of conductive material, a plurality of electric pins are arranged on the outer surface of the two bends of the wire. Click part. 9. The multi-polarity power inductor as claimed in claim 8, wherein the engaging portion is composed of a plurality of elongated ridges. 10 . The multipolar power inductor as claimed in claim 9 , wherein a cross-section of the engaging portion is cross-shaped. 11 .

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