CN202352466U - Inductance core and inductor - Google Patents
Inductance core and inductor Download PDFInfo
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- CN202352466U CN202352466U CN2011204967379U CN201120496737U CN202352466U CN 202352466 U CN202352466 U CN 202352466U CN 2011204967379 U CN2011204967379 U CN 2011204967379U CN 201120496737 U CN201120496737 U CN 201120496737U CN 202352466 U CN202352466 U CN 202352466U
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Abstract
The utility model discloses an inductance core and an inductor. The inductance core comprises a magnetic core body provided with an inductance air gap, and a magnetic core plug-in composed of permeable substances; wherein the magnetic core plug-in is arranged in the inductance air gap of the magnetic core body, the shape of the magnetic core plug-in matches with that of the inductance air gap so as to guarantee that the magnetic core plug-in can be stably fixed in the inductance air gap. According to the inductance core and the inductor, inductance saturation can be prevented when a large current passes through, and simultaneously alternating current ripples in output circuit can be reduced.
Description
Technical field
The utility model relates to the inductor design technical field, particularly relates to a kind of inductance core and inductor.
Background technology
Inductor, its mainly act on be to AC signal isolate, filtering, resistance just exchanges perfectly straight stream, the logical low frequency of resistance high frequency.For power supply product, the outputting inductance behind the secondary commutation can reach filtering and the purpose that suppresses to exchange ripple, and therefore, inductor is an indispensable element in the power supply product.Wherein, the various coils that form with the insulated conductor coiling in the inductor are called inductance, and the shape of the magnetic core that inserts in the inductance coil is generally annular, EE shape or ETD shape.
In the prior art; Saturated in order to prevent that inductor from taking place through big electric current the time, in the process of making inductor, polish off the part of magnetic core usually; Leave the inductance air gap; In the EE shape magnetic core main body as shown in Figure 1, highly for the magnetic core array of H is polished off, promptly the shared spatial altitude of inductance air gap is H.
The air gap of inductance and the saturation current of inductance are the relations of a contradiction, and be saturated in order to prevent that inductance from taking place at work, strengthens the inductance air gap usually, reduces inductance value, but the interchange ripple in the output circuit becomes greatly simultaneously, makes the inductor filter performance not good; And, must reduce the inductance air gap in order to reduce the interchange ripple in the output circuit, and add big inductance quantity, still, when inductance passed through bigger electric current, it is saturated that inductance just is easy to take place, and inductance performance is not good.
Therefore, it is saturated in the time of how both can having prevented through big electric current inductance to take place, and the interchange ripple that can reduce again in the output circuit is the focus of a research.
The utility model content
For solving the problems of the technologies described above, the utility model embodiment provides a kind of inductance core and inductor, takes place to reduce the interchange ripple in the output circuit when inductance is saturated when realizing preventing through big electric current, and technical scheme is following:
A kind of inductance core, it is applied to comprise in the inductor:
Be provided with the magnetic core body of inductance air gap, the magnetic core plug-in unit that magnetic conduction substance constitutes;
Said magnetic core plug-in unit is arranged in the inductance air gap of said magnetic core body, and its shape and said inductance air gap are suitable, are stable in the said inductance air gap to guarantee said magnetic core plug-in unit.
Wherein, the height of said magnetic core plug-in unit is not more than the degree of depth of the inductance air gap of said magnetic core body.
Wherein, said magnetic core body is the FERRITE CORE body.
Wherein, the material of said magnetic core plug-in unit is ferrite, iron or copper.
Wherein, said magnetic core body is copper core body.
Wherein, the material of said magnetic core plug-in unit is ferrite, iron or copper.
Wherein, said magnetic core body is the irony core body.
Wherein, said magnetic core plug-in unit is ferrite, iron or copper.
Accordingly, the utility model also provides a kind of inductor, comprises the inductance core that the utility model provides.
In the inductance core that the utility model embodiment is provided; Increased the magnetic core plug-in unit that by magnetic conduction substance constitute suitable in the inductance air gap of magnetic core body with the inductance air gap; Not only can increase the inductance core inductance value; When underloading, guarantee current continuity, reach and reduce the purpose that output circuit exchanges ripple; Simultaneously, because original inductance air gap of inductance core is very little, the cross section that the cross section of the magnetic core plug-in unit that is increased connects less than the magnetic core body connects, and when making through big electric current, taking place saturated only is the magnetic core plug-in unit that adds after this.Thus it is clear that, through inductance core and the inductor that utilizes the utility model to provide, inductance takes place in the time of can realizing preventing through big electric current reduces the interchange ripple in the output circuit saturated the time.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do simple the introduction to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of inductance core of the prior art;
Fig. 2 is the structural representation of the magnetic core plug-in unit that is provided with in the EE model FERRITE CORE that the utility model provided;
Fig. 3 is the structural representation of the EE model FERRITE CORE that the utility model provided;
Fig. 4 is the another kind of structural representation of the magnetic core plug-in unit that is provided with in the EE model FERRITE CORE that the utility model provided.
Embodiment
It is saturated inductance to take place in order to realize both can preventing through big electric current, can reduce the purpose of the interchange ripple in the output circuit again, and the utility model provides a kind of inductance core and inductor.At first a kind of inductance core that the utility model provided is introduced below.
A kind of inductance core, it is applied in the inductor, and it comprises:
Be provided with the magnetic core body of inductance air gap, the magnetic core plug-in unit that magnetic conduction substance constitutes;
Said magnetic core plug-in unit is arranged in the inductance air gap of said magnetic core body, and its shape and said inductance air gap are suitable, are stable in the said inductance air gap to guarantee said magnetic core plug-in unit.
In the inductance core that the utility model embodiment is provided; Increased the magnetic core plug-in unit that by magnetic conduction substance constitute suitable in the inductance air gap of magnetic core body with the inductance air gap; Not only can increase the inductance core inductance value; When underloading, guarantee current continuity, reach and reduce the purpose that output circuit exchanges ripple; Simultaneously, because original inductance air gap of inductance core is very little, the cross section that the cross section of the magnetic core plug-in unit that is increased connects less than the magnetic core body connects, and when making through big electric current, taking place saturated only is the magnetic core plug-in unit that adds after this.Thus it is clear that, through inductance core and the inductor that utilizes the utility model to provide, inductance takes place in the time of can realizing preventing through big electric current reduces the interchange ripple in the output circuit saturated the time.
Wherein, the shape of said magnetic core plug-in unit and suitable being meant of said inductance air gap when the magnetic core plug-in unit is filled in the inductance air gap of magnetic core body, can be stable in the inductance air gap.For example: in practical application, can adopt the glue of epoxy resin that this magnetic core plug-in unit is sticked in the air gap, therefore, the degree of depth that the height of magnetic core plug-in unit is not more than the inductance air gap of magnetic core body gets final product.Preferably, in order to reach inductive effects preferably, it is identical with the degree of depth of the inductance air gap of said magnetic core body that height that can the magnetic core plug-in unit is set to, and through an amount of epoxy resin glue the magnetic core plug-in unit is anchored in the inductance air gap.
Need to prove that the magnetic core plug-in unit is made up of the material with magnetic conduction function, it can be identical or different with the material of magnetic core body.For example: when the magnetic core body is the FERRITE CORE body, the material of this magnetic core plug-in unit is ferrite, iron or copper; When the magnetic core body is copper core body, the material of this magnetic core plug-in unit is ferrite, iron or copper; When said magnetic core body was the irony core body, the material of this magnetic core plug-in unit was ferrite, iron or copper.Those skilled in the art it is understandable that the material of magnetic core body is not limited to above-mentioned ferrite, copper core body or irony core body, and is same, and the material of magnetic core plug-in unit also is not limited to above-mentioned ferrite, copper or iron.
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
In practical application, the magnetic core body shape of inductance core can be annular, EE shape, ETD shape, and can one or more groups inductance core carries out and use.For difform magnetic core body, its inductance air gap that the position is set is also inequality, for example can the inductance air gap can be arranged on the newel or both sides etc.
Be example with EE model FERRITE CORE below, a kind of inductance core that the utility model provided is introduced.
Saturated, as shown in Figure 1 in order to prevent that inductor from taking place through big electric current the time, the newel of the E shape magnetic core main body 1 of the existing EE model FERRITE CORE part of being struck off has formed and highly has been the inductance air gap of H.
Be provided with magnetic core plug-in unit 2 as shown in Figure 2 in the inductance air gap of the magnetic core body 1 of the EE model FERRITE CORE that the utility model provided, the height of this magnetic core plug-in unit 2 is H, can be stable in this inductance air gap to guarantee this magnetic core plug-in unit 2.Fig. 3 is the structural representation that in the inductance air gap of magnetic core main body 1, is provided with the EE model FERRITE CORE of magnetic core plug-in unit 2.
In the present embodiment, in the magnetic core body 1 of EE model FERRITE CORE, increase magnetic core plug-in unit 2 as shown in Figure 2, not only can increase the inductance value of inductance core, when underloading, can guarantee the continuity of electric current, reach and reduce the purpose that output circuit exchanges ripple; Simultaneously; Because the cross section of the magnetic core plug-in unit 2 that is increased connects and must connect less than the cross section of magnetic core body 1; Make that when the time taking place saturated only is the magnetic core plug-in unit 2 that is increased through electric current greatly, saturated heating just will only be the magnetic core plug-in unit 2 that is increased.
Wherein, the material of this magnetic core plug-in unit can be identical for the material of the magnetic core body of EE model FERRITE CORE, is ferrite inserts, also can be difference, for example can be ferroelectric plug, copper plug-in unit etc.
Those skilled in the art it is understandable that; For EE model FERRITE CORE; The shape of the magnetic core plug-in unit that in the inductance air gap of magnetic core body, is increased is not limited to the described shape of the foregoing description, and as long as its shape is suitable with the shape of the inductance air gap of magnetic core body, can guarantee that it is stable in the inductance air gap to get final product; For example: for EE model FERRITE CORE; The shape of the magnetic core plug-in unit of being set up in its inductance air gap also can be stairstepping shown in Figure 4, and the height of this step-like magnetic core plug-in unit also is H, makes can be stable in the inductance air gap of magnetic core body.
Need to prove that the height of the described magnetic core plug-in unit of present embodiment is H, this height should not constitute the qualification to present embodiment as just a kind of example.Owing to can adopt epoxy resin glue that the magnetic core plug-in unit is fixed in the practical application; Therefore; As long as the height of magnetic core plug-in unit is not more than H, can filling epoxy resin class glue for the space of magnetic core plug-in unit and inductance air gap, be stable in the inductance air gap to realize the magnetic core plug-in unit.
Accordingly, the utility model embodiment also provides a kind of inductor, and this inductor comprises: the inductance core that the utility model provided.
It is understandable that this inductor also comprises: the electronic component of coil, realization specific function etc.
The above only is the embodiment of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection range of the utility model.
Claims (9)
1. inductance core, it is applied to it is characterized in that in the inductor, comprises:
Be provided with the magnetic core body of inductance air gap, the magnetic core plug-in unit that magnetic conduction substance constitutes;
Said magnetic core plug-in unit is arranged in the inductance air gap of said magnetic core body, and its shape and said inductance air gap are suitable, are stable in the said inductance air gap to guarantee said magnetic core plug-in unit.
2. inductance core according to claim 1 is characterized in that, the height of said magnetic core plug-in unit is not more than the degree of depth of the inductance air gap of said magnetic core body.
3. inductance core according to claim 1 is characterized in that, said magnetic core body is the FERRITE CORE body.
4. inductance core according to claim 3 is characterized in that, the material of said magnetic core plug-in unit is ferrite, iron or copper.
5. inductance core according to claim 1 is characterized in that, said magnetic core body is copper core body.
6. inductance core according to claim 5 is characterized in that, the material of said magnetic core plug-in unit is ferrite, iron or copper.
7. inductance core according to claim 1 is characterized in that, said magnetic core body is the irony core body.
8. inductance core according to claim 7 is characterized in that, said magnetic core plug-in unit is ferrite, iron or copper.
9. an inductor is characterized in that, comprises like any described inductance core of claim 1～8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204967379U CN202352466U (en) | 2011-12-02 | 2011-12-02 | Inductance core and inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204967379U CN202352466U (en) | 2011-12-02 | 2011-12-02 | Inductance core and inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202352466U true CN202352466U (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204967379U Expired - Lifetime CN202352466U (en) | 2011-12-02 | 2011-12-02 | Inductance core and inductor |
Country Status (1)
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| CN (1) | CN202352466U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102930957A (en) * | 2012-09-27 | 2013-02-13 | 江苏锴博材料科技有限公司 | Variable-inductance inductive iron core |
| CN105932896A (en) * | 2016-05-31 | 2016-09-07 | 江苏固德威电源科技股份有限公司 | Photovoltaic grid-connected inverter with common-mode current suppression and suppression method thereof |
| CN115004530A (en) * | 2022-01-28 | 2022-09-02 | 英诺赛科(苏州)半导体有限公司 | GaN-based switch mode power supply with planar transformer |
-
2011
- 2011-12-02 CN CN2011204967379U patent/CN202352466U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102930957A (en) * | 2012-09-27 | 2013-02-13 | 江苏锴博材料科技有限公司 | Variable-inductance inductive iron core |
| CN105932896A (en) * | 2016-05-31 | 2016-09-07 | 江苏固德威电源科技股份有限公司 | Photovoltaic grid-connected inverter with common-mode current suppression and suppression method thereof |
| CN105932896B (en) * | 2016-05-31 | 2018-06-19 | 江苏固德威电源科技股份有限公司 | A kind of photovoltaic combining inverter and its suppressing method inhibited with common mode current |
| CN115004530A (en) * | 2022-01-28 | 2022-09-02 | 英诺赛科(苏州)半导体有限公司 | GaN-based switch mode power supply with planar transformer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |
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| CX01 | Expiry of patent term |