CN104813176B - SMD current sensor devices and its application - Google Patents
SMD current sensor devices and its application Download PDFInfo
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- CN104813176B CN104813176B CN201380059053.4A CN201380059053A CN104813176B CN 104813176 B CN104813176 B CN 104813176B CN 201380059053 A CN201380059053 A CN 201380059053A CN 104813176 B CN104813176 B CN 104813176B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
- G01R15/183—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using transformers with a magnetic core
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
- G01R15/186—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using current transformers with a core consisting of two or more parts, e.g. clamp-on type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/022—Encapsulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
- H01F27/325—Coil bobbins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transformers For Measuring Instruments (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
A kind of SMD current sensor devices, including：Magnetic core；First winding (31) and the second winding (43), the first section and the second section of the magnetic core are wound respectively.The major part of first winding (31) is overmolded by electrically insulating material, the electrically insulating material defines the first covering portion (3), first covering portion is defined for the first section of magnetic core to be introduced into through hole (33) therein, and the equipment includes electric insulation support sector (44), second winding (43) winds the electric insulation support sector, and the electric insulation support sector defines that the two through holes (33,42) are in alignment with each other for the second section of magnetic core to be introduced into through hole (42) therein.SMD current sensor devices be flowed through for sensing first winding whether electric current excessive and accurate measurement described in electric current size.
Description
Technical field
The first aspect of the invention relates generally to a kind of SMD (surface mount device) current sensor devices (device
Part), i.e., a kind of to be designed to set and weld equipment on a printed circuit by SMD technologies, the equipment includes winding
Two windings on magnetic core, set more particularly to being formed as forming small and compact SMD current sensors in structure
Standby, it between two windings particular by setting insulation barrier (it allows the two windings to be positionable adjacent one another) to carry
For high efficiency.
Second and the 3rd aspect of the present invention is related to the different of the SMD current measure devices of one side and answered
With.
Background technology
There are a variety of equipment about current sensor devices in the prior art, some of them include being used to measure electric current
Power pack (also referred to as transformer), such as equipment disclosed in United States Patent (USP) US 4630218.
Furthermore, it is well known that the switch guarantor for including this current sensor is provided with power supply unit now
Protecting system, the power line current feed power supply such as disclosed in the A1 of Publication No. US 2012236611 U.S. Patent application
As in supply.
Such as electric vehicle and motor vehicle driven by mixed power (also known as HEV：" hybrid power-electric vehicle ") current transformer
In application with DC/DC battery chargers, current sensor is required to take as far as possible small space and supports the electricity of maximum possible
Power.In addition, in order to suitable switch management, it is desirable to it is digital control to be controlled better than traditional PWM, and by with very high frequency
Rate (between 70KHz and 200KHz) implements this control to the current sampling for flowing through conductor.
Because size limits, most sensors known in the art are all difficult to requiring that sensor is that surface installation is set
Used in standby application.On a variety of international standards such as the distance between the distance between winding, magnetic core and each windings
Regulation hinder the use of legacy equipment for this purpose.
It is well known, however, that some current sensor devices be applicable to practically SMD, as disclosed in patent referenced below
Current sensor devices.
The B2 of United States Patent (USP) US 7622910 disclose a kind of integrated form current sensor devices for being suitable for surface installation,
The first winding and the second winding including magnetic core and corresponding first section and the second section that wind the magnetic core.
The B2 of patent US 7622910 describe the magnetic core and its winding is suitably insulated, but do not disclose to reality
The special construction of the element (winding and magnetic core) of existing this insulation is set, and is not also disclosed for them in integrated equipment
The special construction of assembling in substrate is set, and has simply quoted integrated circuit " (it is purportedly logical to Sentron CSA-1V-SO "
Cross and be included in AC inductors and be modified), therefore it is impliedly contemplated by the substrate of integrated circuit itself or in its system
The substrates of the other laminars added during making provides the insulation of winding and magnetic core.
The use of the integrated circuit fabrication process of equipment described in the B2 of US 7622910 is manufactured there is many shortcomings, is wrapped
Include those shortcomings associated with the cost of this technique and intrinsic limitation and complexity.Further, since calorifics, geometry
And the limitation of other various constraintss, compared to non-integration current sensor devices, integrated current sensors equipment can
It is relatively low with the maximum electrical parameter values (electrical value) born.
The B1 of EP 1105893 disclose a kind of sensing element manufacturing process, including make the hot melt of fusing under pressure
Glue is molded in a metal die, fenced the magnetic core wound by one or more windings in the metal die.As
One embodiment, according to alleged by it, by multiple blind holes are set in a mold and place connecting portion and formed wherein one or
Multiple windings, the sensing element disclosed in the B1 of EP 1105893 can be directly applied for SMD,.
It is not disclosed in the intermediate insulation between winding or between winding and magnetic core completely in the B1 of EP 1105893, one
Winding is wrapped on magnetic core by denier, then performs disclosed moulding process.
The content of the invention
It is an object of the invention to provide the alternative relative to prior art, and aim to provide a kind of SMD electric currents and pass
Sensor equipment, the equipment provide special structure setting for its inner member (being magnetic core and winding), this cause the equipment because
It is manufactured to compact and small device and improves efficiency, and meets relevant insulation standard (such as dielectric strength) and/or physics
The requirement of construction standard (such as creep age distance, gap, insulation pass through distance) various international standards.
In order to achieve this, the present invention relates to a kind of SMD current sensor devices, it includes：
Magnetic core；
First winding, at least wind the first section of the magnetic core；And
Second winding, at least wind the second section of the magnetic core；
With the SMD current sensor devices disclosed in prior art by contrast, in proposed by the invention scheme,
At least a portion of first winding is overmolded by electrically insulating material, and the electrically insulating material defines the first covering portion
(envelope), first covering portion limits above-mentioned at least a portion of the first winding wherein, the first covering portion limit
Determine to be used to the first section of magnetic core introducing through hole therein, and SMD current sensor devices include electric insulation support sector,
Second winding winds the electric insulation support sector, and the electric insulation support sector is defined for the second section of magnetic core to be introduced wherein
Through hole, wherein the through hole of the first and second windings is in alignment with each other.
First covering portion provides the insulation physical barrier by the first winding and the second winding physical separation.Due to compared to
It is coated by an insulating material the situation of shaping without any winding, the electric insulation between two windings increased, therefore this barrier
Higher electric insulation is provided, so as to allow the distance between two windings to reduce.
Therefore, the invention provides such a current sensor devices, it sets pattern to realize to combine have SMD
The current sensor of device size specification, keep safe characteristic and meet such as IEC-61558 and UL-1950 etc standard
The parameter proposed.
Preferably, magnetic core and the first and second windings form a power pack, wherein the first winding becomes as electric current
The armature winding of parallel operation, and the second winding is secondary windings, although for less preferred embodiment, can not be embodied as electric current
Converter (is used for current sense), but can also be implemented by using the magnetic core and winding of the equipment of the present invention.
As one embodiment, the electric insulation support sector is attached to the first covering portion, that is, be electrically insulated support sector and cladding
Portion is two individual components being attached to one another, and is used as another embodiment, electric insulation support sector and the bodily form of the first covering portion one
Into that is, both are configured a single-piece part.
As one embodiment, magnetic core includes at least one elongated magnetic component, and the elongated magnetic component includes described the
One and second section.
Although as one embodiment, difference of first and second section equivalent to the elongated magnetic component of single-piece
Region, and another embodiment is used as, the magnetic core is divided into the first and second sub- magnetic cores, and the first and second sub- magnetic cores include respective
Elongated magnetic part, the free end of these elongated magnetic parts is close to each other in the through hole of the alignment, to be formed
Elongated magnetic component is stated, wherein each elongated magnetic part corresponds to corresponding described first and second of the magnetic core
Section.
Preferably, the first and second sections introduced by the through hole via above-mentioned alignment, the magnetic core is by removably attached
The first covering portion of the first winding is connected to, and is attached to the electric insulation support sector of the second winding.
As another embodiment, SMD current sensor devices of the invention include the first support component and the second support
Element, each support component support the elongated magnetic at the respective end opposite with the free end of elongated magnetic part
Property part.
As one embodiment, first and second support component is one of the described first and second sub- magnetic cores respectively
Point, and formed and be integrated with formed corresponding single-piece (monomer) element, corresponding elongated magnetic part, and when assembling
The magnetic circuits of closure are formed when together.
As a preferred embodiment, each magnetic one-piece member is cutting off the cross section of its three legs (leg)
From the perspective of be E type parts, and magnetic flux will circulate thereon, and the width of the leg of central part is twice of each sidepiece leg,
So that when two E types parts are by setting facing with each other, when contacting the free end of its corresponding arm/leg, the magnetic circuit of closure is formed,
The magnetic density as caused by first/armature winding wherein in center leg is returned via two sidepieces with the influence value leg of half
Return.
As an alternative, first and second support component is to be attached respectively to the first and second sub- magnetic cores
Elongated magnetic part non-magnetic component.
As a preferred embodiment, the first winding is configured to single turn (one turn), and the second winding is configured to
Multiturn.More specifically, in the application of HEV industries, the second winding is configured at least 50 circles.
Second winding is also insulated using electrically insulating material.As one embodiment, the second winding can be also overmolding to
Type.
It is described insulation or it is overmolded be it is independent of each other, i.e., both at least perform in an individual manner, and both make
Physical barriers increase between winding and between winding and magnetic core so that SMD current sensor devices of the invention are easy to bear
Higher electric current, it thus limit the possibility of electric arc appearance.
According to one embodiment, magnetic core is made up of MnZn alloy or amorphous cobalt.
According to one embodiment, the electric insulation support sector of the second winding is winding former, the second winding wind the winding former and
Formed.
As one embodiment, the winding former by including liquid crystal polymer or meet as backflow or gas phase welding method
It is SMD welding procedures (i.e. according to the high fever index plastic of IEC85 standards) requirement and also be compliant with according to UL94 standards from
The material composition of other plastics of extinguishing standard.
As one embodiment, the first winding includes copper, nickel, silver, gold and/or tin alloy.
As a preferred embodiment, the principle of current sensor of the invention is the use based on instrument transformer.Cause
This, not to being operated by the electric current of conductor, but performs from magnetic field in magnetic core, sensing to obtain by the electric current
Measurement.
The alternative plan of the present invention is related to the applications of SMD current sensor devices in first scheme, flows through for sensing
Whether the electric current of one winding is excessive, such as overtemperature protection.
In addition, the present invention, in addition to providing and being used to sense the current sensor devices of overcurrent, the equipment can be with
For current measurement.This metering system allows to measure very high electric current, without directly with the galvanic contact, and if carrying out this
The contact of sample, then relevant device should have sizable volume.
Therefore, the 3rd scheme of the invention is related to answering for the SMD current sensor devices of any first claim
With, the size of current of the first winding is flowed through for accurate measurement, so as to for example correlation Switching Power Supply feeding mechanism control
Reading plotter (reading) is used in loop.
Brief description of the drawings
By the way that below with reference to detailed statement of the accompanying drawing to embodiment, the advantages of above-mentioned and other will be better understood when
And feature, these accompanying drawings should be considered as demonstrating property and nonrestrictive, in the accompanying drawings：
Fig. 1 is to be shown as one embodiment, the solid of the SMD current sensor devices of one side of the invention
Figure；
Fig. 2 is the top view of Fig. 1 equipment；
As being the three-dimensional exploded view of the equipment of one side of the invention with Fig. 1 and Fig. 2 identical embodiments, Fig. 3；
Fig. 4 illustrates some elements shown in Fig. 3 with solid, particularly including those of the first winding and the second winding
Element；
Fig. 5 with top view show with Fig. 4 identical elements, wherein being drawn with dotted line for insert magnetic core three alignment
Through hole,；
Fig. 6 is the sectional view along Fig. 5 hatching VI-VI interceptions；
Fig. 7 is the sectional view along Fig. 5 hatching VII-VII interceptions；
Fig. 8 is the sectional view along Fig. 5 hatching VIII-VIII interceptions；And
Fig. 9 is to show the stereogram after all elements (except lid 2) assembling shown in Fig. 3.
Embodiment
Accompanying drawing shows multiple different elements of the SMD current sensor devices 1 of the present invention, and as one embodiment, this sets
It is standby to include (main as shown in Figure 3)：
Magnetic core, it is divided into the first sub- magnetic core (magnetic sub-core) and the second sub- magnetic core, the first sub- magnetic core and
Two sub- magnetic cores each include elongated magnetic part 511,521；
First winding 31, overmolded by electrically insulating material, the electrically insulating material defines the first covering portion 3, and this first
Covering portion limits the major part (in addition to free end 31a and 31b) of the first winding 31 wherein (as shown in Figure 6), institute
The first covering portion 3 is stated to define for elongated magnetic part 511 to be introduced into through hole 33 therein, as shown in Figure 6；
Be electrically insulated support sector 44；And
Second winding 43, it winds the electric insulation support sector 44, and the support sector 44 that is electrically insulated is defined for by described in
Elongated magnetic part 521 introduces through hole 42 (as shown in Figure 7) therein.
In addition, as the embodiment demonstrated, the first winding 31 is made up of single turn, and the second winding 43 can arrive including 50
200 circles.As other embodiments, those skilled in the art will can calculate the ratio of the first and second umber of turns.
As shown in figure 8, through hole 33,42 is in alignment with each other so that when two elongated magnetic parts 511,521 pass through its free end
When portion is inserted into, it is close to each other in the through hole 33,42 of alignment.These elongated magnetic parts 511,521 can pass through structural type
Adhesive or epoxide-resin glue are attached to the Internal periphery of through hole winding 33 and 42.
(equipment) is provided with lid 2, and the different elements (particularly sub- core) of current sensor devices 1 are housed and are maintained at
(use be clasped here) together, as depicted in figs. 1 and 2.
As shown in figure 3, SMD current sensor devices 1 include the first support component 51 and the second support component 52, Mei Gezhi
Supportting element has two parallel arms 51a-51b being connected with each other by crossbeam (traverse) 51c, 52c；52a-52b, elongated magnetic
Property part 511, one of 521 is connected to this crossbeam at the respective end opposite with its free end so that elongated magnetic part
511st, 521 with parallel arms 51a-51b；52a-52b identicals direction extends in parallel, so as to these parallel arms and it is corresponding horizontal stroke
Beam 51c；52c forms E type parts together.Two E type parts are arranged to facing with each other, and assembling when (as shown in Figure 9) at both
Respective arm 51a-51b；52a-52b and elongated magnetic part 511,521 each free end contact.
These E type shapes of first support component 51 and the second support component 52 provide particularly advantageous embodiment, because
For in last assembling, shape the standing close to typical Surface mounted devices of assembled two E type parts being in contact with each other
Quadratic prism or right-angled prismatic.And therefore, these E type shapes allow to form symmetrical equipment 1, and when needed easily by magnetic core
Remove to be changed.
As a preferred embodiment, the first support component 51 and the second support component 52 are the first sub- magnetic core and respectively
A part for two sub- magnetic cores, and with corresponding (forming corresponding magnetic one-piece member together) elongated magnetic part
511st, 521 formed be integrated, each magnetic one-piece member be have width be Wc central part leg 511,521 E types part (such as
Shown in Fig. 3), width Wc is twice of each sidepiece leg 51a, 51b, 52a, 52b width Ws so that when two E type part quilts
When being arranged to facing with each other, and being contacted at the free end of their own arm/leg, the magnetic circuit of closure is formed, wherein in
By two sidepiece legs, (51a adds 52a to magnetic flux as caused by first/armature winding 31 in center portion leg (being formed as 522 plus 521)
And 51b adds 52b) returned with half influence value.
As another embodiment, the first support component 51 and the second support component 52 are to be attached respectively to first and second
The non-magnetic component of the elongated magnetic part 511,521 of sub- magnetic core.
As shown in figure 3, the present invention provides individually encapsulation (single package) for each winding 31,43, so two
Physical barriers between person be present to prevent electric arc or loss.This point is particularly useful, because the equipment of the present invention is excellent
Selection of land is used to bear in 100 to 1000V and the application with RMS current (electric current for being up to 50A with detection/measurement).
This individually encapsulation includes overmolded armature winding completely, the armature winding include having between 2 to 4kV it
Between dielectric strength, and with secondary windings and magnetic core at least at a distance of 5mm creep age distances, therefore meet such as IEC-61558 and UL-
1950 this kind of prescribed by standard and desired insulator.
The equipment that Fig. 4 is shown specifically Fig. 3 without magnetic core and lid 2, so as to observe winding 31,43 and with its phase
The details of the element of association, such as the first insulating wrapped portion 3 and electric insulation support sector 44 or winding former, it is specific excellent at one
Select in embodiment, the winding former by liquid crystal polymer (also referred to as LCP, " Liquid Crystal Polymer "), carbolic acid or
Resistant to elevated temperatures any other material and fire retardant are formed.This winding former 44 allow for being subjected between about -40 DEG C to+155 DEG C it
Between continuous temperature.
Fig. 5 shows the top view of element shown in Fig. 4, wherein two in five pins (pin) 41 are (where five pins
Capable second and the 4th) be connected (this not shown in figure connect) to second or the free end of secondary windings 43, work as use
When, it will be obtained by electromagnetic induction principle on the winding and the output by first or the current in proportion of armature winding 31
Electric current.As an embodiment described, the winding former 44 of secondary windings 43 be mechanically coupled to five pins 32 with
More preferable mechanical fasteners are provided, but these pins 32 have indirect electrical connection.
First winding 31 is plane bonding jumper (as shown in Figure 1 to 9), has and is not overmolded, is maintained at covering portion 3
Outside free end 31a, 31b, these free ends form two corresponding metal pins being used for SMD, (to pass through
Welding) be electrically connected to corresponding board traces so that electric current from there through.
Fig. 6 is the sectional view intercepted along Fig. 5 cutting plane line VI-VI, and shows there is Ω shapes or similar in formation
After shape, how the first winding 31 is embedded into the first covering portion 3, and this Ω shapes are generally used for defining a kind of regular shape
Shape, such as the shape for shape (metal profile).
This Ω shapes allow to be formed and be understood to around one week electromagnetically here around elongated magnetic part 511
One circle.
As shown in Figure 5 and Figure 6, the first covering portion 3 is faced the wall and meditated 3a, 3b and therebetween around the including two upper flats
The protrusion central part 3c of the core of one winding 31.
(as shown in Figure 9) upon assembly, wherein two parallel arms 51a-51b of the first support component 51 are supported on respectively
Described two upper flats are faced the wall and meditated on one of 3a, 3b and are supported on prominent central part 3c corresponding adjacent wall 3c1,3c2,
Therefore the robustness of the general structure of offer equipment 1 is provided.
Armature winding is preferably provided to support about 50A RMS DC electric current, it is therefore preferred to, selection has about 3
×0.4mm2Cross section, material be such as copper plus nickel flash (flash, flash smelting), tin alloy, silver or gold to be to ensure that it can
Suitably to be welded and be ensured good electrical property (Ohmic resistance rate) and hot property (thermal conductivity).
In addition, frequency operating range have to be between about 10KNz between 250KHz, to meet industry requirement.
The bonding jumper of the first winding 31 is formed to obtain by the traditional processing of punching press and bending, and it is generally by stainless
Steel is formed.
Fig. 7 show along Fig. 5 cutting plane line VII-VII interception sectional view, it illustrates electric insulation support sector 44 (also by
Referred to as winding former) how to limit the through hole 42 mentioned above to be alignd with through hole 33.
Described Fig. 7 and Fig. 3, Fig. 4 and Fig. 5, which are shown, to be attached to support member 4 or the electricity being integrated is formed with support member 4 absolutely
Edge support sector 44, the support member 4 with two upper flat surfaces 4a, 4b and fall between and with through hole 33,42
The central dome portion 4c of the central through hole 55 of alignment, wherein two parallel arms 52a-52b of the second support component 52 are propped up respectively
On described two upper flat surface 4a, 4b and central dome portion 4c corresponding adjacent wall 4c1,4c2, this equally has for support
Help provide the robustness of the general structure of equipment 1.This insulation support sector 44 is used for carrying second or secondary windings 43.
For Fig. 8 embodiment, electric insulation support sector 44, the covering portion 3 of support member 4 and first are configured to single-piece member
Part, its respective through hole 55,42 and 33 form single, common through hole.
A recessed area R1 is limited in the upper face through the support member 4 below central dome, to be used as elongated magnetic
The guide portion of part 521 and make its easily by through hole 55 and 42 insert.With identical purpose, in the top table of the first covering portion 3
Face limits another recessed area R2, as shown in Figure 5.
Metal pins 41 for SMD welding are mechanically attached to the support member 4 so that they are such as all accompanying drawings
Extension as shown.The free end that at least two metal pins 41 are connected to the second winding 43 is discussed above.
Claims (18)
1. a kind of SMD current sensor devices, including：
Magnetic core；
First winding (31), at least wind the first section of the magnetic core；And
Second winding (43), at least wind the second section of the magnetic core；
Wherein, a part for first winding (31) is individually overmolded by electrically insulating material, to limit the first covering portion
(3), the part of first winding (31) is limited in first covering portion by first covering portion, wherein only described
The free end (31a, 31b) of first winding (31) is not overmolded,
Characterized in that,
- first winding (31) is made up of the plane bonding jumper of a circle, and second winding (43) is configured to multiturn；
The free end (31a, 31b) of-first winding (31) is maintained at outside the covering portion (3), and is formed and be used for
Two corresponding first metal pins of SMD welding；
- first covering portion (3) is limited for the first section of the magnetic core to be introduced into through hole (33) therein；
The electric insulation support sector (44) of-second winding (43) winding one, and the electric insulation support sector limit for will described in
Second section of magnetic core introduces through hole (42) therein；
- electric insulation the support sector (44) is attached to first covering portion (3), or with the bodily form of the first covering portion (3) one
Into, and including the second metal pins (41) being mechanically attached, for SMD welding, second metal pins
(41) at least a portion is electrically connected at least to the free end of second winding (43),
The through hole (33) of-first winding (31) and the through hole (42) of second winding (43) are in alignment with each other so that work as institute
State the first section of magnetic core and when the second section is inserted into the through hole via its free end, the first section of the magnetic core and
The free end of second section is close to each other,
Wherein each winding is provided independent encapsulation, and the overmolded part of the first winding includes having between 2
To the dielectric strength between 4kV and with second winding and the magnetic core at least at a distance of the insulator of 5mm creep age distances.
2. SMD current sensor devices according to claim 1, wherein the magnetic core includes at least one elongated magnetic structure
Part, the elongated magnetic component include first section and the second section.
3. SMD current sensor devices according to claim 2, wherein the magnetic core is divided into the first sub- magnetic core and second
Sub- magnetic core, the first sub- magnetic core and the second sub- magnetic core include respective elongated magnetic part (511,521), the respective length
The free end of shape magnetic part is close to each other in the through hole (33,42) of the alignment, to form the elongated magnetic component,
Wherein each elongated magnetic part (511,521) is corresponding to corresponding first section of the magnetic core and second
Section.
4. SMD current sensor devices according to claim 3, including the first support component (51) and the second support component
(52), with the free end opposite respective end of each support component in the elongated magnetic part (511,521)
An elongated magnetic part is supported at portion.
5. SMD current sensor devices according to claim 4, wherein first support component (51) and the second support
Element (52) is a part for the described first sub- magnetic core and the second sub- magnetic core respectively, and with the corresponding elongated magnetic part
(511,521) formed and be integrated, to form corresponding monomer member with corresponding first support component and the second support component
Part.
6. SMD current sensor devices according to claim 4, wherein first support component (51) and the second support
Element (52) is the non magnetic member for the elongated magnetic part (511,521) for being attached respectively to the first sub- magnetic core and the second sub- magnetic core
Part.
7. the SMD current sensor devices according to claim 5 or 6, wherein first support component (51) and second
Support component (52), which each has, passes through crossbeam (51c；52c) two parallel arms (51a-51b being connected with each other；52a-52b), institute
State elongated magnetic part (511,521) and be connected to the crossbeam (51c；52c) so that the elongated magnetic part along with it is described
Parallel arms (51a-51b；52a-52b) identical direction extends parallel to, with the parallel arms and the crossbeam (51c；52c)
E type parts are formed together, two of which E type parts are arranged to facing with each other, and in both respective arm (51a-51b；52a-
52b) and at the free end of the elongated magnetic part (511,521) contact.
8. SMD current sensor devices according to claim 7, wherein first covering portion (3) includes at least two
Upper flat is faced the wall and meditated (3a, 3b) and therebetween protrusion central part (3c), and the prominent central part surrounds first winding
(31) at least a portion, wherein two parallel arms (51a-51b) of first support component (51) are supported on institute respectively
State the corresponding adjacent wall that the prominent central part (3c) was faced the wall and meditated on one of (3a, 3b) and be supported on at least two upper flats
On (3c1,3c2).
9. SMD current sensor devices according to claim 8, wherein the electric insulation support sector (44) is attached to support
Part (4) is integrated with support member (4) formation, and the support member (4) has at least two upper flat surfaces (4a, 4b) and position
Central dome portion (4c) therebetween, the central dome portion carry the central through hole (55) to be alignd with the through hole (33,42),
Described two parallel arms (52a-52b) of wherein described second support component (52) are supported at least two top respectively
One of flat surface (4a, 4b) is upper and is supported on the corresponding adjacent wall (4c1,4c2) of the central dome portion (4c).
10. SMD current sensor devices according to claim 1, wherein second winding (43) is also using electric insulation
Material is overmolded.
11. SMD current sensor devices according to claim 1, wherein, by the through hole via alignment (33,
42) the first section and the second section of the magnetic core are introduced respectively so that the magnetic core is detachably attached to described first
The first covering portion (3) of winding (31) and the electric insulation support sector (44) of second winding (43).
12. SMD current sensor devices according to claim 1, wherein the magnetic core is by MnZn alloy and/or amorphous state
Cobalt is formed.
13. SMD current sensor devices according to claim 1, wherein the electric insulation of second winding (43) is supported
Portion (44) is winding former.
14. SMD current sensor devices according to claim 13, wherein the winding former is by including liquid crystal polymer
Material is made.
15. SMD current sensor devices according to claim 1, wherein first winding (31) includes nickel, silver, gold
And/or tin alloy.
16. SMD current sensor devices according to claim 1, wherein the magnetic core and the first winding (31) and second
Winding (43) forms power pack.
17. a kind of application of SMD current sensor devices according to any one of the claims, flowed through for sensing
The electric current of first winding is excessive.
A kind of 18. application of SMD current sensor devices according to any one of claim 1 to 16, for accurately surveying
Amount flows through the size of the electric current of first winding.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ESP201231737 | 2012-11-12 | ||
| ES201231737A ES2405837B1 (en) | 2012-11-12 | 2012-11-12 | Surface mount current sensor device |
| PCT/EP2013/003365 WO2014072062A1 (en) | 2012-11-12 | 2013-11-08 | A smd current sensor device and uses thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104813176A CN104813176A (en) | 2015-07-29 |
| CN104813176B true CN104813176B (en) | 2017-12-29 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380059053.4A Active CN104813176B (en) | 2012-11-12 | 2013-11-08 | SMD current sensor devices and its application |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN104813176B (en) |
| DE (1) | DE112013005380T5 (en) |
| ES (1) | ES2405837B1 (en) |
| WO (1) | WO2014072062A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018202669B3 (en) | 2018-02-22 | 2019-07-04 | SUMIDA Components & Modules GmbH | Inductive component and method for producing an inductive component |
| IT201800007694A1 (en) * | 2018-07-31 | 2020-01-31 | Meta System Spa | WRAPPED COMPONENT |
| DE102019208884A1 (en) * | 2019-06-19 | 2020-12-24 | SUMIDA Components & Modules GmbH | Inductive component |
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| US4362990A (en) * | 1979-04-20 | 1982-12-07 | Lgz Landis & Gyr Zug Ag | Current- and voltage-measurement transducer |
| WO2001055734A2 (en) * | 2000-01-28 | 2001-08-02 | Vacuumschmelze Gmbh & Co. Kg | Compensation current sensor |
| EP1617228A1 (en) * | 2004-07-16 | 2006-01-18 | Liaisons Electroniques-Mecaniques Lem S.A. | Current sensor |
| CN100485407C (en) * | 2003-02-21 | 2009-05-06 | 机电联合股份有限公司 | Magnetic field sensor and electrical current sensor thereof |
| CN101925825A (en) * | 2008-01-25 | 2010-12-22 | 机电联合股份有限公司 | Current sensor |
| CN201829299U (en) * | 2010-10-21 | 2011-05-11 | 普莱默电子(无锡)有限公司 | Large-current power surface mounted devices (SMD) inductor |
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| FR2518266A1 (en) * | 1981-12-15 | 1983-06-17 | Telemecanique Electrique | CURRENT MEASURING DEVICE CIRCULATING IN A DRIVER |
| US4630218A (en) | 1983-04-22 | 1986-12-16 | Cooper Industries, Inc. | Current measuring apparatus |
| JPH07320961A (en) * | 1994-05-24 | 1995-12-08 | Tdk Corp | Surface-mounting type transformer |
| DE19836146A1 (en) | 1998-08-10 | 2000-02-24 | Vacuumschmelze Gmbh | Inductive component, especially a current converter for an electricity meter, is produced by molding a molten hot melt adhesive under pressure in a metal mould enclosing a wound magnetic core |
| US7622910B2 (en) | 2006-10-06 | 2009-11-24 | Honeywell International Inc. | Method and apparatus for AC integrated current sensor |
| FR2909452B1 (en) * | 2006-11-30 | 2009-02-20 | Actaris Sas Soc Par Actions Si | ELECTRIC ENERGY METER COMPRISING AT LEAST ONE INDUCTIVE TYPE CURRENT MEASURING SENSOR AND SENSOR THEREFOR |
| US8437157B2 (en) | 2011-03-16 | 2013-05-07 | Marmon Utility, Llc | Power line current fed power supplies producing stable load currents and related methods |
| CN202473481U (en) * | 2012-01-10 | 2012-10-03 | 成都金之川电子有限公司 | Integrated spiral coil inductor |
-
2012
- 2012-11-12 ES ES201231737A patent/ES2405837B1/en active Active
-
2013
- 2013-11-08 CN CN201380059053.4A patent/CN104813176B/en active Active
- 2013-11-08 WO PCT/EP2013/003365 patent/WO2014072062A1/en active Application Filing
- 2013-11-08 DE DE112013005380.2T patent/DE112013005380T5/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4362990A (en) * | 1979-04-20 | 1982-12-07 | Lgz Landis & Gyr Zug Ag | Current- and voltage-measurement transducer |
| WO2001055734A2 (en) * | 2000-01-28 | 2001-08-02 | Vacuumschmelze Gmbh & Co. Kg | Compensation current sensor |
| CN100485407C (en) * | 2003-02-21 | 2009-05-06 | 机电联合股份有限公司 | Magnetic field sensor and electrical current sensor thereof |
| EP1617228A1 (en) * | 2004-07-16 | 2006-01-18 | Liaisons Electroniques-Mecaniques Lem S.A. | Current sensor |
| CN101925825A (en) * | 2008-01-25 | 2010-12-22 | 机电联合股份有限公司 | Current sensor |
| CN201829299U (en) * | 2010-10-21 | 2011-05-11 | 普莱默电子(无锡)有限公司 | Large-current power surface mounted devices (SMD) inductor |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112013005380T5 (en) | 2015-08-13 |
| CN104813176A (en) | 2015-07-29 |
| ES2405837B1 (en) | 2013-10-18 |
| WO2014072062A1 (en) | 2014-05-15 |
| ES2405837A1 (en) | 2013-06-04 |
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