CN212136106U - Multi-air-gap high-insulation large-current inductor - Google Patents
Multi-air-gap high-insulation large-current inductor Download PDFInfo
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- CN212136106U CN212136106U CN202020414890.1U CN202020414890U CN212136106U CN 212136106 U CN212136106 U CN 212136106U CN 202020414890 U CN202020414890 U CN 202020414890U CN 212136106 U CN212136106 U CN 212136106U
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Abstract
The utility model discloses a high insulating heavy current inductance of many air gaps, including the insulating frame and install the coil in the insulating frame, the top and the bottom of insulating frame are installed respectively and are gone up magnetic chip and lower magnetic chip, the relative both sides of insulating frame are equipped with the boss that is used for supporting go up the magnetic chip, open the magnetic slot that link up from top to bottom in the boss, it has side magnetic core piece to peg graft in the magnetic slot; the middle part of the insulating frame is provided with a through hole, an R bar magnetic column is arranged in the through hole, a sleeve is sleeved on the R bar magnetic column, and the lower end of the sleeve is fixedly connected to the insulating frame; the upper end and the lower end of each of the side magnetic core block and the R rod magnetic column are respectively bonded with the inner end faces of the upper magnetic chip and the lower magnetic chip to form a closed magnetic field loop; the coil is sleeved on the sleeve, and an insulating gasket is arranged between the coil and the upper magnetic chip; the utility model discloses insulating nature is high, can satisfy heavy current, high voltage's design demand simultaneously.
Description
Technical Field
The utility model relates to an inductance specifically relates to a many air gaps high insulation heavy current inductance.
Background
Although the current high-current inductor can realize small volume and high power, the problem of energy storage exists, particularly, a magnetic core made of ferrite materials is low in surface impedance and is not suitable for the condition of high voltage because most of the ferrite magnetic cores adopted by the current high-current inductor are made of manganese-zinc ferrite materials; in addition, after the assembly of the large-current inductor is completed, a local air gap is opened to prevent magnetic saturation caused by direct-current bias of the magnetic core, and the existence of a single local air gap causes sharp increase of edge magnetic flux near the air gap, so that a radiation coil causes huge eddy-current loss; therefore, most of the large-current inductors are difficult to meet the design requirements of large current and high voltage at the same time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a many air gaps high insulation heavy current inductance is provided, this heavy current inductance's insulating nature is high, can satisfy heavy current, high voltage's demand for design simultaneously.
Solve above-mentioned technical problem, the utility model discloses the technical scheme who adopts as follows:
a multi-air-gap high-insulation large-current inductor comprises an insulating frame and a coil arranged in the insulating frame, wherein an upper magnetic chip and a lower magnetic chip are respectively arranged at the top and the bottom of the insulating frame, bosses for supporting the upper magnetic chip are arranged at two opposite sides of the insulating frame, magnetic grooves which are communicated up and down are formed in the bosses, and side magnetic core blocks are inserted in the magnetic grooves; a through hole is formed in the middle of the insulating frame, an R rod magnetic column is inserted into the through hole, a sleeve is sleeved on the R rod magnetic column, the upper port of the sleeve is bonded with the inner end face of the upper magnetic chip, and the lower port of the sleeve is fixedly connected to the insulating frame; the upper end and the lower end of each of the side magnetic core block and the R rod magnetic column are respectively bonded with the inner end faces of the upper magnetic chip and the lower magnetic chip to form a closed magnetic field loop; the coil is sleeved on the sleeve, and an insulating gasket is arranged between the coil and the upper magnetic chip.
On the basis of the technical scheme, the utility model discloses can do following improvement:
the lower terminal surface of insulating frame with lower magnetic chip joint is furnished with corresponding buckle, lower magnetic chip's relative both sides be equipped with the draw-in groove that the buckle corresponds.
Go up the magnetic chip down the magnetic chip with R stick magnetic pole and the bonding department of port all adopts the glue that contains glass pearl or micelle to bond fixedly on the sleeve.
The insulating frame is made of LCP, bakelite or engineering plastic.
Go up the magnetic chip with the magnetic chip is manganese zinc ferrite magnetism material or the preparation of metal magnetic powder core and forms down.
The R bar magnetic pole is made of ferrite magnetic materials or metal magnetic powder cores.
The side magnetic core block is made of ferrite magnetic materials or metal magnetic powder cores.
Compared with the prior art, the utility model discloses the technique has following advantage:
(1) the multi-air-gap high-insulation large-current inductor can effectively isolate the coil from the magnetic chip, the side magnetic core block and the R bar magnetic column through the insulating frame and the insulating gasket, thereby preventing the product from being punctured at high voltage, improving the insulativity and meeting the design requirements of large current and high voltage;
(2) many air gaps high-insulation heavy current inductance adopt ferrite or the R stick magnetic column that the preparation of metal magnetic powder core formed, there is evenly distributed's little air gap inside this material, be equivalent to decompose the local air gap of magnetic core into a plurality of evenly distributed's little air gap, the magnetic line of force is difficult for producing marginal magnetic flux in the magnetic core inside, reduces the marginal magnetic flux and causes the loss that overflows to the radiation of coil, realizes low temperature rise, improves work efficiency.
Drawings
The invention will be described in detail with reference to the drawings and specific embodiments
Fig. 1 is a schematic top structure diagram of the multi-gap high-insulation large-current inductor of the present invention;
fig. 2 is a schematic diagram of the bottom structure of the multi-gap high-insulation large-current inductor of the present invention;
fig. 3 is a view of the multi-gap high-insulation large-current inductor according to the present invention;
fig. 4 is a schematic view of the top structure of the insulating frame of the multi-gap high-insulation large-current inductor of the present invention;
fig. 5 is a schematic view of the bottom structure of the insulating frame of the multi-gap high-insulation large-current inductor of the present invention;
fig. 6 is the structural schematic diagram of the lower magnetic chip of the multi-air-gap high-insulation large-current inductor of the present invention.
Reference numbers on the drawings: 1-insulating frame, 2-coil, 3-upper magnetic chip, 4-lower magnetic chip, 5-boss, 6-magnetic slot, 7-side magnetic core block, 8-sleeve, 9-R rod magnetic column, 10-insulating gasket, 11-buckle, 12-card slot, 13-electrode pin and 14-through hole.
Detailed Description
Referring to fig. 1 to 6, the multi-air-gap high-insulation large-current inductor of the present embodiment includes an insulating frame 1 and a coil 2 installed in the insulating frame, an upper magnetic chip 2 and a lower magnetic chip 4 are respectively installed at the top and the bottom of the insulating frame 1, the upper magnetic chip 3 and the lower magnetic chip 4 are I-type magnetic sheets made of manganese-zinc ferrite, and the upper magnetic chip 3 and the lower magnetic chip 4 can also be made of metal magnetic powder cores according to design requirements; symmetrical bosses 5 for supporting the upper magnetic chip 3 are arranged on two opposite sides of the insulating frame 1, magnetic slots 6 which are penetrated up and down are respectively arranged in the two bosses 5, side magnetic core blocks 7 are inserted in the magnetic slots 6, the side magnetic core blocks 7 are made of ferrite magnetic materials, and the side magnetic core blocks 7 can also be made of metal magnetic powder cores according to design requirements; a through hole 14 is formed in the middle of the insulating frame 1, an R rod magnetic column 9 is inserted in the through hole 14, the R rod magnetic column 9 is made of ferrite magnetic materials, and the R rod magnetic column 9 can also be made of metal magnetic powder cores according to design requirements; a sleeve 8 is sleeved outside the R rod magnetic column 9, the upper end opening of the sleeve 8 is bonded with the inner end face of the upper magnetic chip 3, and the lower end opening of the sleeve 8 is fixedly connected with the upper end face of the insulating frame 1 and is communicated with the through hole 14; the upper end and the lower end of the side magnetic core block 7 and the R rod magnetic column 9 are respectively bonded with the inner end surfaces of the upper magnetic chip 3 and the lower magnetic chip 4 to form a closed magnetic field loop so as to generate an inductor; the coil 2 is sleeved on the sleeve 8, and an insulating gasket 10 is arranged between the coil 2 and the upper magnetic chip 3; this insulator cradle 1 and insulating washer 10 separate coil 2 and magnetic chip, side magnetic core piece and R stick magnetic column, reduce the influence of diffusion magnetic flux to 2 performances of coil, reduce coil 2's eddy current effect, consequently, the insulating nature of the high insulating heavy current inductance of many air gaps in this embodiment is high, can satisfy heavy current, high voltage's design demand simultaneously.
The lower terminal surface of insulating frame 1 in this embodiment is connected with lower magnetic chip 4 joint and is furnished with corresponding buckle 11, and the relative both sides of lower magnetic chip 4 are equipped with draw-in groove 12 that corresponds with buckle 11 to magnetic core 4 and insulating frame 1 location installation fast under the convenience.
In this embodiment, the bonding positions of the upper magnetic chip 3, the lower magnetic chip 4, the two ends of the R rod magnetic column 9 and the upper port of the sleeve 8 are all bonded and fixed by glue containing glass beads or colloidal particles, so as to form an air gap of the high-current inductor, and the size of the air gap can be selected by the glue containing glass beads or colloidal particles with corresponding diameters according to actual design requirements.
The insulating frame 1 in this embodiment is made of an industrial Liquid Crystal Polymer (LCP), has good insulating properties, and may be made of bakelite or engineering plastic according to actual design requirements.
In the embodiment, the coil 2 is provided with an electrode pin 13 connected with a circuit of the PCB, and the tail end of the electrode pin 13 extends downwards and vertically; the input end and the output end of the coil 2 extend to the same side outside the coil 2 and are bent downwards perpendicular to the lower magnetic chip 4 to be directly used as electrode pins 8.
The coil 2 in the embodiment is formed by winding flat copper wires, has smaller skin effect compared with a round wire under the condition of high frequency, is beneficial to being applied to the environment with high current and high power consumption, and simultaneously can reduce the resistance, realize high power and low loss, accelerate heat conduction and be beneficial to heat dissipation; round enameled wires, multi-strand wires or litz wires can also be selected according to design requirements.
The above embodiments of the present invention are not right the utility model discloses the limited protection scope, the utility model discloses an embodiment is not limited to this, all kinds of basis according to the above-mentioned of the utility model discloses an under the above-mentioned basic technical thought prerequisite of the utility model, right according to ordinary technical knowledge and the conventional means in this field the modification, replacement or the change of other multiple forms that above-mentioned structure made all should fall within the protection scope of the utility model.
Claims (7)
1. A multi-air-gap high-insulation large-current inductor comprises an insulating frame and a coil arranged in the insulating frame, wherein an upper magnetic chip and a lower magnetic chip are respectively arranged at the top and the bottom of the insulating frame; a through hole is formed in the middle of the insulating frame, an R rod magnetic column is inserted into the through hole, a sleeve is sleeved on the R rod magnetic column, the upper port of the sleeve is bonded with the inner end face of the upper magnetic chip, and the lower port of the sleeve is fixedly connected to the insulating frame; the upper end and the lower end of each of the side magnetic core block and the R rod magnetic column are respectively bonded with the inner end faces of the upper magnetic chip and the lower magnetic chip to form a closed magnetic field loop; the coil is sleeved on the sleeve, and an insulating gasket is arranged between the coil and the upper magnetic chip.
2. The large-current inductor with multiple air gaps and high insulation of claim 1, wherein the lower end face of the insulation frame is clamped with the lower magnetic chip and provided with corresponding buckles, and clamping grooves corresponding to the buckles are arranged on two opposite sides of the lower magnetic chip.
3. The large-current inductor with multiple air gaps and high insulation of claim 1, wherein the bonding positions of the upper magnetic chip, the lower magnetic chip, the R rod magnetic column and the upper end of the sleeve are bonded and fixed by glue containing glass beads or colloidal particles.
4. The multi-air-gap high-insulation large-current inductor as claimed in claim 1, wherein the insulating frame is made of LCP, bakelite or engineering plastic.
5. The multi-air-gap high-insulation large-current inductor as recited in claim 3, wherein said upper core piece and said lower core piece are both manganese-zinc ferrite magnetic material or metal magnetic powder core.
6. The multi-air-gap high-insulation large-current inductor as claimed in claim 3, wherein the R bar magnetic pillars are ferrite magnetic materials or metal magnetic powder cores.
7. The multi-air-gap high-insulation high-current inductor according to claim 1, wherein the side magnetic core blocks are ferrite magnetic materials or metal magnetic powder cores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020414890.1U CN212136106U (en) | 2020-03-27 | 2020-03-27 | Multi-air-gap high-insulation large-current inductor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020414890.1U CN212136106U (en) | 2020-03-27 | 2020-03-27 | Multi-air-gap high-insulation large-current inductor |
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| CN212136106U true CN212136106U (en) | 2020-12-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113223824A (en) * | 2021-04-29 | 2021-08-06 | 东莞沛波电子有限公司 | High-capacity power inductor convenient for automatic production |
| CN113506674A (en) * | 2021-06-09 | 2021-10-15 | 江西省高新超越精密电子有限公司 | Large-current transformer capable of rapidly adjusting multiphase voltage |
-
2020
- 2020-03-27 CN CN202020414890.1U patent/CN212136106U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113223824A (en) * | 2021-04-29 | 2021-08-06 | 东莞沛波电子有限公司 | High-capacity power inductor convenient for automatic production |
| CN113506674A (en) * | 2021-06-09 | 2021-10-15 | 江西省高新超越精密电子有限公司 | Large-current transformer capable of rapidly adjusting multiphase voltage |
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Address after: 518000 3401-3405, Building 11, Tian'an Yungu Industrial Park Phase II (Plot 02-08), Gangtou Community, Bantian Street, Longgang District, Shenzhen, Guangdong Patentee after: SHENZHEN CODACA ELECTRONIC Co.,Ltd. Address before: 518000 a, floor 2, building 2, Yongchuang Science Park, science and technology second road, shangxue science and Technology City, Bantian street, Longgang District, Shenzhen, Guangdong Patentee before: SHENZHEN CODACA ELECTRONIC Co.,Ltd. |
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