CN107610902A - A kind of magnetic cell and DC DC converters - Google Patents
A kind of magnetic cell and DC DC converters Download PDFInfo
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- CN107610902A CN107610902A CN201710835382.3A CN201710835382A CN107610902A CN 107610902 A CN107610902 A CN 107610902A CN 201710835382 A CN201710835382 A CN 201710835382A CN 107610902 A CN107610902 A CN 107610902A
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- conducting strip
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Abstract
The invention discloses a kind of magnetic cell, the magnetic cell includes magnetic core and is equipped with the substrate of conducting strip；The magnetic core is in day word structure, including first window and the second window；The magnetic core passes through the substrate, and the conducting strip passes through any one described first window or second window, do not contacted between multiple conducting strips；Magnetic cell forms coil by the conducting strip being laid on substrate with magnetic core, and each conducting strip is considered as wire of the prior art, and conducting strip is through first window or the second window equivalent to around the magnetic core；Magnetic cell provided by the invention is by making multiple conducting strips pass through first window or the second window, the conductor loops different equivalent to more are around same magnetic core, multiple windings are formed, multiple inductance are integrated on a magnetic cell, so as to reduce the volume of the filter circuit using multiple inductance；The invention also discloses a kind of DC DC converters, equally with above-mentioned beneficial effect.
Description
Technical field
The present invention relates to field of electronic devices, more particularly to a kind of magnetic cell and DC-DC converter.
Background technology
With continuous progress scientific and technological in recent years, increasing electronic equipment is full of the environment in people's daily life
In.But converters in normal work or produce very big electromagnetic interference, influence whether All other routes either
The normal work of electronic equipment, and converters can also be influenceed by electromagnetic interference in itself.
In order to suppress above-mentioned interference, at this stage it is often the case that the output end in converters increases filtered electrical
Road.And filter circuit is mainly made up of inductance and electric capacity.It is generally only by copper in the prior art for inductance
The coil encircling magnetic core of system, so as to which required inductance be made.
But in reality, due to generally having many output circuits for converters, for each
The positive bus-bar and negative busbar of individual output circuit, are generally required for being provided with inductance and are filtered.When output circuit is more, it is necessary to
Inductance it is also more, now filter circuit will be very huge and heavy, and this can reduce the work(of converters
Rate density.
The content of the invention
It is an object of the invention to provide a kind of magnetic cell, can effectively reduce filtering in the case of using multiple inductance
The volume of circuit；, can be in the situation using multiple inductance another object of the present invention is to provide a kind of DC-DC converter
Under, effective volume for reducing filter circuit.
In order to solve the above technical problems, the present invention provides a kind of magnetic cell, the magnetic cell includes magnetic core and is equipped with more
The substrate of individual conducting strip；The magnetic core is in day word structure, including first window and the second window；The magnetic core passes through the base
Plate, the conducting strip pass through any one described first window or second window, not contacted between multiple conducting strips.
Optionally, through the first window conducting strip quantity and the conducting strip through second window
Quantity is equal.
Optionally, the substrate is provided with wire and connects the conducting strip to form winding, and the winding is around the magnetic
Magnetic pole among core, the first window and second window are alternately passed through successively.
Optionally, the substrate sets the wire to form multipair winding with the conducting strip, and each pair winding includes first
Winding and the second winding；The number of turn of the magnetic pole of first winding and second winding among the magnetic core is identical, its
In, the winding of the magnetic pole among the magnetic core is the first winding clockwise, counterclockwise the magnetic pole among the magnetic core
Winding be the second winding.
Optionally, the quantity of the winding of the magnetic pole among the magnetic core surround the magnetic counterclockwise with described clockwise
The quantity of the winding of magnetic pole among core is identical.
Optionally, it is parallel to each other between the conducting strip.
Optionally, the conducting strip is copper sheet.
Optionally, the substrate is pcb board.
Present invention also offers a kind of DC-DC converter, the DC-DC converter includes any one above-mentioned magnetic cell.
A kind of magnetic cell provided by the present invention, line can be formed with the magnetic core by the conducting strip being laid on substrate
Circle, and wire of the prior art is each considered as through the conducting strip of any one described first window or the second window,
Conducting strip is through first window or the second window equivalent to around the magnetic core；Magnetic cell provided by the invention is by making multiple lead
Electric piece passes through first window or the second window, and the conductor loop different equivalent to more forms multiple windings, incited somebody to action around same magnetic core
Multiple inductance are integrated on a magnetic cell, and magnetic cell provided by the invention can be taken as multiple inductance to use, so as to reduce
Use the volume of the filter circuit of multiple inductance.Present invention also offers a kind of DC-DC converter, equally with above-mentioned beneficial to effect
Fruit, no longer repeated herein.
Brief description of the drawings
, below will be to embodiment or existing for the clearer explanation embodiment of the present invention or the technical scheme of prior art
The required accompanying drawing used is briefly described in technology description, it should be apparent that, drawings in the following description are only this hair
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
The structural representation for the first magnetic cell that Fig. 1 is provided by the embodiment of the present invention；
Second of magnetic cell that Fig. 2 is provided by the embodiment of the present invention integrates the overlooking the structure diagram of differential mode inductance.
Embodiment
The core of the present invention is to provide a kind of magnetic cell.In the prior art, inductance is continuously led by one
Line forms around the magnetic pole coiling of magnetic core, and equivalent to one magnetic core only surrounds a coil, so as to which an inductance can only be connected in one
On bar circuit.When the filter circuit for installing inductance needs to suppress the interference of a plurality of circuit, in the prior art, it is necessary to corresponding
Positive and negative two buses of each output circuit set inductance respectively, this will cause whole filter circuit very it is huge and
Complexity, while the power density of converters can be reduced.
And a kind of magnetic cell provided by the present invention, it can be formed by the conducting strip being laid on substrate with the magnetic core
Coil, and each it is considered as of the prior art lead through the conducting strip of any one described first window or the second window
Line, conducting strip is through first window or the second window equivalent to around the magnetic core；Magnetic cell provided by the invention is more by making
Individual conducting strip passes through first window or the second window, the conductor loop different equivalent to more around same magnetic core, form it is multiple around
Group, multiple inductance being integrated on a magnetic cell, magnetic cell provided by the invention can be used in conjunction with as multiple inductance, from
And reduce the volume of the filter circuit using multiple inductance.
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, described embodiment is only part of the embodiment of the present invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
It refer to Fig. 1, the structural representation for the first magnetic cell that Fig. 1 is provided by the embodiment of the present invention；The magnetic member
Part includes magnetic core 100 and surface is equipped with the substrate 200 of multiple conducting strips.
In embodiments of the present invention, the magnetic core 100 is in day word structure, is accurately said, in the operating condition, magnetic core 100
Structure be that whole magnetic core 100 would generally include three magnetic poles, and two adjacent magnetic poles can form one in the day word lied down
Window, one meets together to form two windows, respectively the window 203 of first window 202 and second.Certainly, for the knot of magnetic core 100
Structure, it can also be mesh word structure etc., by taking mesh word structure as an example, essentially correspond to the magnetic that two embodiment of the present invention are provided
The combination of core 100.Similarly other similar structures are the combination for the magnetic core 100 that multiple embodiment of the present invention are provided, Ying Jun
Within protection scope of the present invention.
Magnetic core 100 provided by the present invention, the magnetic pole 101 among magnetic core 100 are typically to be mixed by various iron oxide
A kind of sintering magnetic metal oxide of thing composition, such as manganese-zinc ferrite, nickel-zinc ferrite etc., it is relevant to be located at magnetic core 100
The concrete composition of middle magnetic pole 101 is not specifically limited herein, as long as permeability magnetic material.Similarly, it is related to be located at magnetic
The concrete composition of the magnetic pole of the both sides of core 100 is equally not specifically limited in embodiments of the present invention.The relevant cross-sectional area of magnetic pole 101
Shape be not specifically limited in embodiments of the present invention, no matter the magnetic pole 101 is cylinder cuboid etc., can be in this hair
Corresponding effect is played in bright.
Magnetic pole 101 among the magnetic core 100 pass through the substrate 200, the conducting strip 201 pass through any one described the
One window 202 or second window 203, do not contact between multiple conducting strips.
In the present invention, the magnetic core 100 needs the conducting strip 201 through the substrate 200, being arranged on substrate 200
Window can just be passed through, it is not required that the magnetic core 100 it is vertical pass through the substrate 200, as long as guarantee is arranged on substrate 200
On conducting strip 201 can pass through any one above-mentioned window.
In actual application, for the positive bus-bar in the same output circuit all the way of such as DC-DC converter and negative mother
Line, when connecting magnetic cell provided by the present invention, if being connected on same magnetic cell, need to connect the two of positive and negative busbar
Individual conducting strip is each passed through different windows when passing through said two windows first.Such as：If connect the conducting strip of positive bus-bar
It is passed through the first window 202 first along the sense of current, then connect the conducting strip of negative busbar needs first along the sense of current
Through second window 203.Connection for the positive and negative busbar of different output circuits does not have above-mentioned requirements then.Normal conditions
Under, above-mentioned conducting strip is to be arranged in parallel, and passes through the quantity of the conducting strip of the first window 202 and pass through second window
The quantity of the conducting strip of mouth 203 is identical.Certainly, the set-up mode about conducting strip can also have other modes, not do herein
It is specific to limit.
In embodiments of the present invention, the substrate 200 is usually pcb board, and above-mentioned conducting strip is generally welded to the PCB
On plate.Certainly, in embodiments of the present invention, the structure for substrate 200 and it is not specifically limited.
The shape of conducting strip 201 is related to, is rectangle under normal circumstances, naturally it is also possible to is other shapes, still
Because cross-sectional area of the resistance with conducting strip 201 in the flow direction of conducting strip 201 is relevant, if the shape of conducting strip 201
It is uneven, the inequality of resistance can be caused, situations such as so as to cause hot-spot.It is usually the case that the selection of conducting strip 201 is
Rectangle.
Certainly, in embodiments of the present invention, relevant conducting strip 201 may furthermore is that bending on the basis of rectangular
, the conducting strip 201 is not limited to extend only through an above-mentioned window：When conducting strip 201 extends only through an above-mentioned window, the conduction
Piece 201 is 0.5 inductance enclosed equivalent to a coil turn is constituted with magnetic core 100；When the conducting strip of bending is continuously worn successively
When crossing the first window 202 and second window 203, the conducting strip and magnetic core 100 are equivalent to constituting the number of turn more than one
Inductance, wherein often through any of the above-described individual window successively, the number of turns equivalent to inductance coil increases by 0.5 circle；In the present invention
In, it can be contacted with each other between conducting strip in principle, when conducting strip contacts with each other, for the multiple conducting strip phases to contact with each other
When in the conducting strip of a bending, so do not conflict with the description in the present invention, and the present invention is due to being by multiple inductance
Integrate, i.e., multigroup coil bypasses same magnetic core 100, so need in the present invention it is multiple do not contact with each other lead
Electric piece.
The material of above-mentioned conducting strip is typically that selection is made with copper, naturally it is also possible to is carried out from other materials or alloy
Make, such as replace copper to make conducting strip etc. with aluminium, due in the present invention, no matter installing and applying magnetic member
Part, generally without the toughness for considering conducting strip, it is possible to which but electric conductivity this not pliable using aluminium flake is good
Material.Except of course that above two material, can also select other materials to make conducting strip, be not specifically limited herein.
It is above-mentioned about magnetic core 100, substrate 200, conducting strip 201 size, do not limit specifically in embodiments of the present invention
It is fixed, depending on particular situation.
A kind of magnetic cell provided by the present invention, the conducting strip 201 being laid on substrate 200 and the magnetic core can be passed through
100 form coil, and are each considered as now through the conducting strip of any one window 203 of first window 202 or second
There is the wire in technology, conducting strip is through the window 203 of first window 202 or second equivalent to around the magnetic core 100；The present invention
The magnetic cell of offer is by making multiple conducting strips pass through the window 203 of first window 202 or second, the wire different equivalent to more
Around same magnetic core 100, multiple windings are formed, multiple inductance are integrated on a magnetic cell, magnetic member provided by the invention
Part can be taken as multiple inductance to use, so as to reduce the volume of the filter circuit using multiple inductance.
For the conducting strip on substrate 200, conducting strip can be interconnected so as to form by winding by wire, with this
To increase the number of turn of inductance, detailed content refer to following inventive embodiments.
Fig. 2 is refer to, second of magnetic cell that Fig. 2 is provided by the embodiment of the present invention integrates the plan structure of differential mode inductance
Schematic diagram.
The magnetic cell that the embodiment of the present invention is provided is on the basis of above-mentioned magnetic cell, by being laid on substrate 200
Wire 204 connect multiple conducting strips, to form winding, magnetic pole 101 of the winding among the magnetic core 100,
The first window 202 and second window 203 are alternately passed through successively.
In embodiments of the present invention, the winding can alternately pass through the first window 202 and second window successively
203, the magnetic pole 101 that will now surround among the magnetic core 100, but circular direction is not fixed, and can be clockwise
It surround or surround counterclockwise, is not specifically limited in embodiments of the present invention., can be with when connecting above-mentioned conducting strip
Multiple conducting strips are arranged on the substrate 200, the conducting strip is connected by the wire in substrate 200 to form winding.
Certainly, the specific material about aforesaid substrate 200, is not specifically limited herein.
In embodiments of the present invention, the winding set on the substrate 200 needs multiple, and the winding
Between can not contact with each other.With in above-described embodiment, the reason that can not be contacted with each other between conducting strip is similar, between above-mentioned winding
Do not contact with each other, but specific length and the number of turn for each winding etc., it is not especially limited.
The window that multiple above-mentioned windings pass through first along the sense of current can be same window, can also be different windows
Mouthful, it is not specifically limited herein, if but positive bus-bar and two inductance of negative busbar in connection output circuit are integrated in one
In individual magnetic cell provided by the present invention, then two windings for needing to connect positive and negative busbar are passing through said two windows first
When, it is each passed through different windows.
The inductance that the above-mentioned winding around the magnetic pole 101 is formed with the magnetic core 100 is electric for the differential mode of a multiturn
Sense, whole magnetic cell are integrated with multiple differential mode inductances.
In embodiments of the present invention, the integrated inductance of the magnetic cell is differential mode inductance, under normal conditions, the magnetic member
The quantity of the winding for the magnetic pole 101 being surround clockwise in part among the magnetic core 100 with surrounding among the magnetic core 100 counterclockwise
Magnetic pole 101 winding quantity it is identical.
Under normal circumstances, except the magnetic pole 101 being surround clockwise in the magnetic cell among the magnetic core 100 can be set
The quantity of winding is identical with the quantity of the winding of the magnetic pole 101 among the magnetic core 100 counterclockwise, further can also set
Put the number of turn of the magnetic pole 101 among the magnetic core 100 clockwise and the magnetic pole among the magnetic core 100 counterclockwise
101 number of turn is identical.Because now without the concern for the saturated phenomenon of magnetic core 100, can arbitrarily be adjusted according to actual conditions around
The number of turn of group is to change the inductance value of winding.
The magnetic cell that the embodiment of the present invention is provided, conducting strip is connected to form winding by wire, it is circular so as to increase
The number of turn of the magnetic core 100.The preparation method that conducting strip is connected by wire 204, compared in the prior art directly by wire
It is wound on the preparation method of magnetic core, magnetic cell provided by the present invention enhanced convenience in making.If aforesaid substrate 200 is selected
Pcb board, the present invention only need conducting strip being welded on the pcb board for pre-setting wire, it is possible to the winding is fabricated to,
And without using technique for coiling complicated in the prior art.
Present invention also offers a kind of DC-DC converter, has any magnetic cell that foregoing invention embodiment is provided,
Remaining part refer to prior art, no longer be repeated herein.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be with it is other
The difference of embodiment, between each embodiment same or similar part mutually referring to.For dress disclosed in embodiment
For putting, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is referring to method part
Explanation.
A kind of magnetic cell provided by the present invention and DC-DC converter are described in detail above.It is used herein
Specific case is set forth to the principle and embodiment of the present invention, and the explanation of above example is only intended to help and understands
The method and its core concept of the present invention.It should be pointed out that for those skilled in the art, this is not being departed from
On the premise of inventive principle, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into the present invention
In scope of the claims.
Claims (9)
1. a kind of magnetic cell, it is characterised in that the magnetic cell includes magnetic core and is equipped with the substrate of multiple conducting strips；The magnetic
Core is in day word structure, including first window and the second window；The magnetic core passes through the substrate, and the conducting strip passes through any one
The first window or second window, do not contact between multiple conducting strips.
2. magnetic cell according to claim 1, it is characterised in that quantity and institute through the conducting strip of the first window
The quantity stated through the conducting strip of second window is equal.
3. magnetic cell according to claim 2, it is characterised in that the substrate be provided with wire connect the conducting strip with
Winding is formed, magnetic pole of the winding among the magnetic core, alternately passes through the first window and second window successively
Mouthful.
4. magnetic cell according to claim 3, it is characterised in that the substrate sets the wire and the conducting strip structure
Into multipair winding, each pair winding includes the first winding and the second winding；First winding and second winding are around described
The number of turn of magnetic pole among magnetic core is identical, wherein, the winding of the magnetic pole among the magnetic core is the first winding clockwise, inverse
The winding of magnetic pole of the hour hands among the magnetic core is the second winding.
5. magnetic cell according to claim 4, it is characterised in that the winding of the magnetic pole among the magnetic core clockwise
Quantity and the winding of the magnetic pole among the magnetic core counterclockwise quantity it is identical.
6. magnetic cell according to claim 1, it is characterised in that be parallel to each other between the conducting strip.
7. magnetic cell according to claim 1, it is characterised in that the conducting strip is copper sheet.
8. magnetic cell according to claim 1, it is characterised in that the substrate is pcb board.
9. a kind of DC-DC converter, it is characterised in that the DC-DC converter includes any one of claim 1 to 8 right will
Seek described magnetic cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710835382.3A CN107610902A (en) | 2017-09-15 | 2017-09-15 | A kind of magnetic cell and DC DC converters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710835382.3A CN107610902A (en) | 2017-09-15 | 2017-09-15 | A kind of magnetic cell and DC DC converters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107610902A true CN107610902A (en) | 2018-01-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710835382.3A Pending CN107610902A (en) | 2017-09-15 | 2017-09-15 | A kind of magnetic cell and DC DC converters |
Country Status (1)
| Country | Link |
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| CN (1) | CN107610902A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111830301A (en) * | 2019-04-23 | 2020-10-27 | 宁波三星智能电气有限公司 | Electric energy meter |
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| CN202996476U (en) * | 2012-12-15 | 2013-06-12 | 华南理工大学 | Stacked staggered winding based planar EMI (electro-magnetic interference) filter |
| CN202996475U (en) * | 2012-12-18 | 2013-06-12 | 华南理工大学 | Integrated EMI (electro-magnetic interference) filter for improving noise suppression performance by optimizing grounding winding layout |
| DE102012204206A1 (en) * | 2012-03-16 | 2013-09-19 | Robert Bosch Gmbh | Throttle element for integrated structure of electronic circuit in motor vehicle control device, has wires provided around core, where part of wires is designed as bonding wires and/or printed circuit board that is printed on core |
| CN104467398A (en) * | 2014-12-23 | 2015-03-25 | 湘潭大学 | Integrating device of EMI filter and boost inductor in bridgeless PFC circuit |
| CN105144317A (en) * | 2013-03-15 | 2015-12-09 | 欧姆龙汽车电子株式会社 | Magnetic device |
| CN205789371U (en) * | 2016-05-20 | 2016-12-07 | 浙江求缺科技有限公司 | It is applicable to the plane winding coil of twin columns core structure |
| CN106972753A (en) * | 2017-05-22 | 2017-07-21 | 湘潭大学 | A kind of Boost controlled resonant converters passive element integrating device |
| US9748036B2 (en) * | 2013-05-24 | 2017-08-29 | Delta Electronics, Inc. | Transformer |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012204206A1 (en) * | 2012-03-16 | 2013-09-19 | Robert Bosch Gmbh | Throttle element for integrated structure of electronic circuit in motor vehicle control device, has wires provided around core, where part of wires is designed as bonding wires and/or printed circuit board that is printed on core |
| CN202996476U (en) * | 2012-12-15 | 2013-06-12 | 华南理工大学 | Stacked staggered winding based planar EMI (electro-magnetic interference) filter |
| CN202996475U (en) * | 2012-12-18 | 2013-06-12 | 华南理工大学 | Integrated EMI (electro-magnetic interference) filter for improving noise suppression performance by optimizing grounding winding layout |
| CN105144317A (en) * | 2013-03-15 | 2015-12-09 | 欧姆龙汽车电子株式会社 | Magnetic device |
| US9748036B2 (en) * | 2013-05-24 | 2017-08-29 | Delta Electronics, Inc. | Transformer |
| CN104467398A (en) * | 2014-12-23 | 2015-03-25 | 湘潭大学 | Integrating device of EMI filter and boost inductor in bridgeless PFC circuit |
| CN205789371U (en) * | 2016-05-20 | 2016-12-07 | 浙江求缺科技有限公司 | It is applicable to the plane winding coil of twin columns core structure |
| CN106972753A (en) * | 2017-05-22 | 2017-07-21 | 湘潭大学 | A kind of Boost controlled resonant converters passive element integrating device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111830301A (en) * | 2019-04-23 | 2020-10-27 | 宁波三星智能电气有限公司 | Electric energy meter |
| CN111830301B (en) * | 2019-04-23 | 2023-03-31 | 宁波三星智能电气有限公司 | Electric energy meter |
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