CN205809145U - Current sensor - Google Patents
Current sensor Download PDFInfo
- Publication number
- CN205809145U CN205809145U CN201620639266.5U CN201620639266U CN205809145U CN 205809145 U CN205809145 U CN 205809145U CN 201620639266 U CN201620639266 U CN 201620639266U CN 205809145 U CN205809145 U CN 205809145U
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- magnetic core
- conductor
- current sensor
- ear
- housing
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Abstract
A kind of small current sensor is provided, possess: magnetic core (10), it is formed with multiple groove portion (11) and has the spaced apart wall part (12) in adjacent groove portion (11), each groove portion (11) is inserted by corresponding conductor, and magnetic core (10) has exposed surface；Detecting element (20), is used for detecting magnetic flux density produced by the peristome (14) of the side of each groove portion (11)；Housing (30), accommodates magnetic core (10), and is formed with the receiving portion (31) possessing bottom (34) when exposing the exposed surface of described magnetic core (10).This housing (30) possesses: the first protuberance (32), surrounds conductor, at least ensure that the insulating properties between conductor and magnetic core (10)；Second protuberance (33), the outer surface (35) from the bottom (34) of receiving portion (31) surrounds conductor, at least ensure that the insulating properties between conductor and magnetic core (10) around the direction of inserting of conductor.
Description
Technical field
This utility model relates to the current sensor measuring the electric current flowed in the conductor.
Background technology
In the past, the motor vehicle driven by mixed power or the electric automobile that possess motor and converter have been popularized.On above-mentioned vehicle,
On the basis of controlling the rotation of motor rightly, it is highly important for measuring the electric current of flowing in motor.Therefore, to be measured this
The electric current of sample, according to putting on the connection motor bus with converter, (bus bar, is equivalent in this utility model needs
" conductor ") electric current, utilize detecting element that the magnetic flux density in magnetic field produced around this bus is detected, and
Carry out computing obtaining based on the magnetic flux density detected and put on the electric current of bus.Owing to such electric current needs accurately
Measure, therefore, have studied the technology (such as patent documentation 1) detecting described magnetic flux density accurately.
Current sensor described in patent documentation 1 is configured to, in order to measure the three-phase electricity of motor control converter
Stream, at least provided with multiple magnetic cores, this magnetic core in the circumferential direction a part on there is peristome, and, opening at each magnetic core
Oral area is provided with detecting element, and this detecting element is close for detecting the magnetic flux in magnetic field produced by the electric current because flowing in bus
Degree.
Patent documentation 1: Japanese Unexamined Patent Publication 2014-139556 publication
Utility model content
The problem that utility model is to be solved
In this current sensor, in order to improve accuracy of detection, make the magnetic core position relationship with bus without departing from being
Highly important.Accordingly, it would be desirable to magnetic core is securely fixed on the housing being positioned relative to bus.Such as, at housing
On utilize binding agent to fix multiple magnetic core in the case of, need the space for injecting binding agent to the surrounding of each magnetic core.?
In the case of utilizing insert moulding to be fixed, around magnetic core, need the space that resin flows into.
Therefore, in the technology that patent documentation 1 is recorded, multiple magnetic cores direction side by side needs make housing become big, because of
This, the size of current sensor can become big, thus the loading space of current sensor can become big.It addition, flow in bus
The electric current of hundreds of A, it is desirable, therefore, to assure that the insulating properties between bus and magnetic core, general usual way is, by bus with
The thickness of the resin between magnetic core thickeies to guarantee insulating properties, but this point also becomes the main cause that shell dimension becomes big.
Accordingly, it would be desirable to small-sized current sensor.
The means of solution problem
Current sensor of the present utility model, it is characterised in that
Possess:
The magnetic core of magnet, is formed with multiple groove portion and has the spaced apart wall part in adjacent groove portion, each groove portion quilt
Corresponding conductor is inserted, and described magnetic core has exposed surface, and this exposed surface is and the inserting in the face that direction is vertical of described conductor
The face being exposed,
Detecting element, is arranged at the peristome of the side in each groove portion, is used for detecting magnetic flux produced by corresponding peristome
Density,
Housing, accommodates described magnetic core when exposing the exposed surface of described magnetic core, and is formed and possesses bottom
Receiving portion；
Described housing possesses:
First protuberance, surrounding said conductor is inserted the direction of described magnetic core and is surrounded described conductor, described at least ensure that
Insulating properties between conductor and described magnetic core, and highlight more than the first height of regulation from the exposed surface of described magnetic core,
Second protuberance, leads described in the encirclement of direction from inserting of the outer surface surrounding said conductor of the bottom of described accommodation section
Body, with at least ensure that described conductor and described magnetic core and between insulating properties, and from the outer surface of the bottom of described accommodation section
Prominent from more than described first the second the most different height.According to such feature structure, owing to measuring in multiple conductors
Magnetic core required for the current value of the electric current of flowing can be integrally formed, and therefore, and arranges multiple magnetic core individually constituted
Situation compare, it is possible to make the compact in size of current sensor.It addition, be not limited to the magnetic accommodated by the receiving portion of housing
Whether core is exposed, and is suitable to the height of each magnetic core and by the protuberance of conductor surrounded owing to being provided with to have, therefore, it is possible to really
Protect the insulating properties between magnetic core and conductor.Further, since by the first protuberance arranged along conductor and the second protuberance
Guarantee magnetic core and conductor and between insulating properties, therefore, compared with the situation not guaranteeing insulating properties along conductor, it is possible to make shell
The size inserting vertical face, direction with conductor in the face that body is had diminishes.Therefore, according to this structure, it is possible to realize little
The current sensor of type.
Additionally, it is preferred that be, described magnetic core possesses ear, and this ear has the thickness thinner than the thickness of described magnetic core and from institute
The outer peripheral face stating magnetic core highlights, and described ear is fixing on the housing.
According to such feature structure, owing to magnetic core is integrally formed as described above, therefore, it is possible to reduce magnetic core is solid
The quantity of the fixture (such as screw) used when being scheduled on housing.Therefore, in housing during fixed magnetic core, it is possible to reduce magnetic
The compression of core is crooked such that it is able to the deterioration of suppression magnetic characteristic.It addition, compared with the situation separately forming magnetic core, if
The ear being placed on magnetic core also tails off and well such that it is able to realize the miniaturization of magnetic core.Also, it is not necessary to such as ester moulding
The equipment that magnetic core is fixed on housing by equipment or binding appts etc., thus, it is also possible to reduce manufacturing cost.
Additionally, it is preferred that be, described detecting element is arranged on substrate, and described ear is by connecting conductor and described substrate
Grounding parts connects.
According to such structure, it is possible to the grounding parts by substrate of the noise included in magnetic flux by magnetic poly-on magnetic core
Release such that it is able to improve magnetic characteristic.
Additionally, it is preferred that be, described ear is arranged at the position of centre of gravity of described magnetic core on the width of described magnetic core.
According to such structure, after magnetic core is fixed on housing, even if at magnetic core because certain reason is in receiving portion
In the case of skew, it is also difficult to abut against with the inner wall part of receiving portion, therefore, stress will not be produced on magnetic core such that it is able to
Prevent the deterioration of magnetic characteristic.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of current sensor.
Fig. 2 is the front view of current sensor.
Fig. 3 is the side view of current sensor.
Fig. 4 is the expanded view of current sensor.
Fig. 5 is the sectional view of V-V line in Fig. 2.
Fig. 6 is the figure of the magnetic core representing other embodiments.
The explanation of reference:
1 current sensor
2 conductors
10 magnetic cores
11 groove portions
12 wall parts
14 peristomes
15 ears
20 detecting elements
30 housings
31 receiving portions
32 first protuberances
33 second protuberances
Bottom 34
35 outer surfaces
40 substrates
80 connect conductor
H1 the first height
H2 the second height
Detailed description of the invention
Current sensor 1 of the present utility model can measure the determined electric current flowed in the conductor.Here, in the conductor
In the case of streaming current, according to the size of this electric current, with conductor for generation magnetic field, axle center, this magnetic field produce magnetic flux.This
Current sensor 1 detects the magnetic flux density of such magnetic flux.Flowing in conductor is measured based on the magnetic flux density detected
Electric current (current value).
Fig. 1 shows the axonometric chart of current sensor 1.In order to easy to understand, by the conductor 2 of perforation electric current sensor 1
Bearing of trend is set to direction A, multiple conductors 2 direction side by side is set to direction B, by the most vertical with the both sides of direction A and direction B
Straight direction is set to direction C.Fig. 2 shows the figure (front view) observing current sensor 1 from A direction.Fig. 3 shows from C side
To the figure (side view) observing current sensor 1.It addition, Fig. 4 shows the figure launched by each several part of current sensor 1.With
Under, utilize Fig. 1 to Fig. 4 to illustrate.
This current sensor 1 is configured to, and possesses magnetic core 10, detecting element 20, housing 30.Here, current sensor 1 is led
Body 2 inserts through, and this conductor 2 is for connecting not shown three phase electric machine and the converter being energized this three phase electric machine.Three
Phase motor is for the power source of motor vehicle driven by mixed power or electric automobile etc..The unidirectional current conversion that converter will export from battery etc.
For alternating current.Conductor 2 is converted to the voltage of alternating current by converter and electric current supplies to three phase electric machine by such.Cause
This, as shown in Figure 1 to Figure 3, in the present embodiment, conductor 2 is configured to three.Current sensor 1 is by such multiple conductors
In 2, the electric current of flowing is as determined object.
Magnetic core 10 is configured to, and has multiple groove portion 11 and by the spaced apart wall part 12 in adjacent groove portion 11.It addition,
Outside the two of multiple groove portions 11, there is outside wall portions 13.As shown in Figures 1 to 4, in the present embodiment, magnetic core 10 is configured to have
Three groove portions 11.Therefore, the magnetic core 10 of present embodiment has two wall parts 12.Such magnetic core 10 is made up of magnet.This
The magnetic core 10 of embodiment is that the flat board being made up of the metallic magnet with groove portion 11 is carried out on the A direction of Fig. 1 to Fig. 4 layer
Fold and formed.Above-mentioned metallic magnet is soft magnetic metal, electromagnetic steel plate (silicon steel plate) or permalloy (permalloy) etc. and its
Quite.As such magnet, the most directionless electromagnetic steel plate can be used.It is of course also possible to use other electromagnetic steel plates.Magnetic
Such metallic magnet is carried out punching press and constitutes by core 10.
As shown in Figures 1 to 4, each groove portion 11 is inserted by corresponding conductor 2, and magnetic core 10 has exposed surface, and this exposed surface is
Insert in the face that direction is vertical be exposed face with conductor 2.In the present embodiment, the direction of inserting of conductor 2 is
Refer to A direction.Therefore, and " with conductor 2 insert the face that direction is vertical " refer in the face that magnetic core 10 is had, be equivalent to and BC face
Two parallel faces, at least one face in these two faces is exposed.For these two faces easy to understand, it is set to first
21 and second face 22.In the present embodiment, the first face 21 is above-mentioned exposed surface.
So, by magnetic core 10, conductor 2 is surrounded respectively, it is possible to make the produced magnetic flux of surrounding of conductor 2 easily
Poly-magnetic.Additionally, for the conductor 2 being inserted through in groove portion 11, at least with groove portion 11, wall part 12, the inner face of outside wall portions 13
Between get involved and have the part of aftermentioned housing 30.
Detecting element 20 is arranged at the peristome 14 of the side in each groove portion 11, is used for detecting corresponding peristome 14 and is produced
Magnetic flux density.As described above, the magnetic core 10 of present embodiment has three groove portions 11, it may have three peristomes 14.Logical
Cross the electric current of flowing, generation magnetic field around conductor 2 in conductor 2, thus magnetic core 10 carries out poly-magnetic.Now, at each opening
Portion 14 generation utilization has the magnetic flux of the poly-magnetic such as wall part 12 and the outside wall portions 13 of each peristome 14.Such in order to detect
The magnetic flux density of magnetic flux, detecting element 20 is configured at each peristome 14.Such detecting element 20 can use known
Hall IC or magneto-resistive effect element (MR element).It addition, in order to reduce detection contained in the testing result of magnetic flux density by mistake
Difference, each detecting element 20 can use the element manufactured in same operation, is preferably used in same batch the unit manufactured
Part.
Housing 30 has receiving portion the 31, first protuberance the 32, second protuberance 33.Receiving portion 31 is to expose magnetic core 10
The state of exposed surface accommodates this magnetic core 10, and this receiving portion 31 possesses bottom 34.In the present embodiment, magnetic core 10 is to expose
The state in the first face 21 is contained in receiving portion 31.Bottom 34 refers to, when receiving portion 31 accommodates magnetic core 10, and in housing 30 and magnetic
The face that second face 22 of core 10 is relative.
First protuberance 32 is set to, and the direction inserting magnetic core 10 around conductor 2 surrounds conductor 2, at least ensure that conductor 2
And the insulating properties between magnetic core 10, and highlight the first height more than H1 of regulation from the exposed surface of magnetic core 10.Insert magnetic core 10
Direction refer to, the A direction that the direction of magnetic core 10 through with conductor 2 is consistent.Therefore, the first protuberance 32 in housing 30 from
The face that second face 22 of magnetic core 10 is relative is arranged along A direction.It addition, in order to ensure the insulating properties between conductor 2 and magnetic core 10,
First protuberance 32 is formed in the way of surrounding conductor 2.
Here, Fig. 5 shows the sectional view of the V-V line along Fig. 2.From the first of the regulation that the exposed surface of magnetic core 10 highlights
Highly H1 does not refer to the height prominent from the upper end of housing 30, but from first of the magnetic core 10 along the A direction shown in Fig. 5
21 prominent height.From height (above-mentioned " the first height H1 ") root that the exposed surface of the magnetic core 10 of this first protuberance 32 is prominent
Set with the creepage distance of magnetic core 10 according to conductor 2.Creepage distance is with known standard, according between conductor 2 and magnetic core 10
Between the material of housing and set.Preferably first height H1 is set as such as more than 5mm.
Second protuberance 33 is set to, and the outer surface 35 from the bottom 34 of receiving portion 31 wraps around the direction of inserting of conductor 2
Enclose conductor 2, at least ensure that the insulating properties between conductor 2 and magnetic core 10, and from the outer surface 35 of the bottom 34 of receiving portion 31
The prominent second height H2 more than different for height H1 from first.The outer surface 35 of the bottom 34 of receiving portion 31 refers to, housing 30 institute
The outer surface parallel with BC face in the face having.The direction of inserting of conductor 2 refers to A direction.Therefore, the second protuberance 33 is from shell
The outer surface parallel with BC face in the face that body 30 is had is arranged along A direction.It addition, in order to ensure conductor 2 and magnetic core 10
Between insulating properties, the second protuberance 33 is formed to surround in the way of conductor 2.
As it is shown in figure 5, refer to along A direction from appearance from the second height H2 of the prominent regulation of outer surface 35 of bottom 34
The prominent height in face 35." second height " should set according to above-mentioned conductor 2 and the creepage distance of magnetic core 10, be preferably set to
Such as more than 0.5mm.
Such housing 30 is consisted of such as ester moulding.Now, housing 30 is provided with for magnetic will be provided with
The substrate 40 of core 10 and detecting element 20 is utilized respectively multiple screw holes 36 of fastened by screw, screw hole 37 and fixed current and passes
The through hole 38 used during sensor 1.It addition, be additionally provided with the space 39 inserted for detecting element 20.
For such housing 30, magnetic core 10 is fixed by ear 15.Ear 15 has thinner than the thickness of magnetic core 10
Thickness, and projecting to B direction from the outer peripheral face 17 of magnetic core 10.As described above, in the present embodiment, magnetic core 10
It is that the monolayer Flat stacked being made up of metallic magnet is constituted (preferably, being constituted by more than seven monolayer Flat stackeds).This
Time, form two kinds of flat boards, i.e. there is the metallic magnet flat board of ear 15 and not there is the metallic magnet flat board of ear 15, passing through
By these Flat stackeds, the thickness that at least can make ear 15 is thinner than the thickness of magnetic core 10.It addition, ear 15 can be at magnetic core 10
Thickness direction on central part constitute.I.e., it is possible to the central part in the A direction in magnetic core 10 is constituted.By above-mentioned seven
In the case of monolayer Flat stacked is constituted, ear can be set on the monolayer flat board of the centrally located the 3rd to the 5th
15.Thus, when magnetic core 10 is fixed on housing 30, it is possible to reduce the compression caused because tightening up a screw 70 crooked.
And, ear 15 may be constructed the position of centre of gravity of the magnetic core 10 on the width (i.e. C direction) of magnetic core 10, excellent
The middle position along C direction that choosing is formed in magnetic core 10.Thus, after magnetic core 10 is fixed on housing 30, even if
In the case of magnetic core 10 offsets in receiving portion 31 because of certain reason, it is also difficult to offset with the inner wall part of receiving portion 31
Connect, therefore, stress will not be produced on magnetic core 10, it is possible to prevent the deterioration of magnetic characteristic.Ear 15 sets at central part respectively
It is equipped with hole portion 16, when making this hole portion 16 consistent with screw hole 36, by screw 70, magnetic core 10 is fastened on housing 30
On.
It addition, be also provided with porose portion 41 on the substrate 40 be provided with detecting element 20, make hole portion 41 and screw hole 37
Under consistent state, by screw 71, substrate 40 is fastened on housing 30.Now, being preferably, ear 15 is by connecting conductor
80 are connected with the grounding parts of substrate 40.Thereby, it is possible to the noise included in magnetic flux by magnetic poly-on magnetic core 10 passes through base
The grounding parts of plate 40 is released such that it is able to improve magnetic characteristic.The magnetic core 10 of present embodiment is integrally formed the most as described above
, thus can be connected with the grounding parts of substrate 40 at least one place, therefore, compared with the magnetic core individually constituted, it is possible to
Reduce the quantity connecting conductor 80 used.Therefore, it is possible to realize miniaturization and the cost of component expense can be reduced.
Current sensor 1 is configured to, and when magnetic core 10 is accommodated by housing 30, utilizes screw 70 to be fixed, enters
And utilize screw 71 to be fixed on housing 30 substrate 40 being provided with detecting element 20.At this time it is also possible to arrange screw 70
The connection conductor 80 being connected with screw 71.So, current sensor 1 can assemble from a direction, it is therefore not necessary to import
Special equipment such that it is able to reduce manufacturing cost.Further, since the fixing of each several part can utilize screw to carry out, therefore,
Hand assembled operation can be utilized to constitute.
(other embodiments)
In the above-described embodiment, illustrate the magnetic core 10 with three C-shaped, but magnetic core 10 can also be such as Fig. 6
Shown employing U-shaped is constituted.Now, ear 15 can also be constituted on the central part of thickness direction.Additionally, it is preferred that be, ear
15 are arranged along B direction from the outer peripheral face 17 of magnetic core 10.
In the above-described embodiment, the magnetic core 10 to the receiving portion 31 being contained in housing 30 exposes the first face 21 and is said
Bright, but magnetic core 10 can also be configured to when only exposing the second face 22 be contained in receiving portion 31, it is also possible to it is configured to
It is contained in receiving portion 31 under the state exposing the first face 21 and the second face 22 both sides.Now, the first of the first protuberance 32 is high
Second height H2 of degree H1 and the second protuberance 33 can also be set according to the creepage distance of magnetic core 10 with conductor 2.
In the above-described embodiment, illustrate that magnetic core 10 is by the flat board being made up of the metallic magnet with groove portion 11
Formed along the A direction stacking of Fig. 1 to Fig. 4, but magnetic core 10 can also be constituted by sintering such as magnet powder.
In the above-described embodiment, to magnetic core 10 by there is the thickness thinner than the thickness of this magnetic core 10 and from magnetic core 10
Outer peripheral face 17 ear 15 prominent to B direction is fixed on housing 30 and is illustrated.But ear 15 can also be to B direction not
Same direction is projecting.Alternatively, it is also possible to be configured to be not provided with ear 15 on magnetic core 10.In this case, such as at shell
When the receiving portion 31 of body 30 accommodates magnetic core 10, it is configured to, housing 30 is arranged and the fastener of magnetic core 10 locking, logical
Cross this fastener to be fixed by magnetic core 10, it is also possible to fixed by additive method.
In the above-described embodiment, detecting element 20 is installed on the substrate 40 and ear 15 is by connecting conductor 80 and base
The grounding parts connection of plate 40 is illustrated but it also may is configured to the ear 15 grounding parts not with substrate 40 and is connected.
This utility model can be applied to the current sensor being measured the electric current of flowing in conductor.
Claims (4)
1. a current sensor, it is characterised in that
Possess:
The magnetic core of magnet, is formed with multiple groove portion and has the spaced apart wall part in adjacent groove portion, and each groove portion is by accordingly
Conductor insert, described magnetic core has exposed surface, this exposed surface be with described conductor insert being revealed in the face that direction is vertical
The face gone out,
Detecting element, is arranged at the peristome of the side in each groove portion, close at magnetic flux produced by corresponding peristome for detection
Degree,
Housing, accommodates described magnetic core, and is formed with the receiving possessing bottom when exposing the exposed surface of described magnetic core
Portion；
Described housing possesses:
First protuberance, surrounding said conductor is inserted the direction of described magnetic core and is surrounded described conductor, at least ensure that described conductor
And the insulating properties between described magnetic core, and highlight more than the first height of regulation from the exposed surface of described magnetic core,
Second protuberance, surrounds described conductor from the direction of inserting of the outer surface surrounding said conductor of the bottom of described accommodation section,
With at least ensure that described conductor and described magnetic core and between insulating properties, and the outer surface from the bottom of described accommodation section highlight
More than described first the second the most different height.
2. current sensor as claimed in claim 1, it is characterised in that
Described magnetic core possesses ear, and this ear has the thickness thinner than the thickness of described magnetic core and dashes forward from the outer peripheral face of described magnetic core
Going out, described ear is fixing on the housing.
3. current sensor as claimed in claim 2, it is characterised in that
Described detecting element is arranged on substrate,
Described ear is connected with the grounding parts of described substrate by connecting conductor.
4. current sensor as claimed in claim 2 or claim 3, it is characterised in that
Described ear is arranged at the position of centre of gravity of described magnetic core on the width of described magnetic core.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015164851A JP2017044486A (en) | 2015-08-24 | 2015-08-24 | Current sensor |
| JP2015-164851 | 2015-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205809145U true CN205809145U (en) | 2016-12-14 |
Family
ID=57505078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620639266.5U Expired - Fee Related CN205809145U (en) | 2015-08-24 | 2016-06-24 | Current sensor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2017044486A (en) |
| CN (1) | CN205809145U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001516A (en) * | 2017-05-08 | 2018-12-14 | 矢崎总业株式会社 | Current sensor |
| CN110100291A (en) * | 2017-08-02 | 2019-08-06 | Ulvac韩国股份有限公司 | The preparation method of electromagnet assembly |
| CN113412429A (en) * | 2019-02-18 | 2021-09-17 | 松下知识产权经营株式会社 | Three-phase current detection device |
| CN113607987A (en) * | 2021-07-30 | 2021-11-05 | 重庆长安汽车股份有限公司 | Current sensor structure |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019113430A (en) * | 2017-12-25 | 2019-07-11 | 長野日本無線株式会社 | Current detector |
| JP2020085544A (en) | 2018-11-19 | 2020-06-04 | アイシン精機株式会社 | Current sensor |
| JP2020128961A (en) * | 2019-02-12 | 2020-08-27 | 日立金属株式会社 | Current sensor |
| WO2023218726A1 (en) * | 2022-05-11 | 2023-11-16 | アルプスアルパイン株式会社 | Electric current sensor |
| WO2024034163A1 (en) * | 2022-08-08 | 2024-02-15 | アルプスアルパイン株式会社 | Current sensor and current control system |
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|---|---|---|---|---|
| US6426617B1 (en) * | 1999-09-28 | 2002-07-30 | Rockwell Automation Technologies, Inc. | Hall effect current sensor system packaging |
| US6348800B1 (en) * | 1999-09-28 | 2002-02-19 | Rockwell Automation Technologies, Inc. | Multi-phase ground fault current sensor system |
| JP2001141772A (en) * | 1999-11-16 | 2001-05-25 | Nippon Hightech Kk | Remote transmission type leakage current detection device |
| KR20120017370A (en) * | 2010-08-18 | 2012-02-28 | 한국단자공업 주식회사 | Earthing apparatus for current sensor |
| JP2013242294A (en) * | 2012-04-23 | 2013-12-05 | Tokai Rika Co Ltd | Current sensor, holder member and current sensor manufacturing method |
| EP2660611A1 (en) * | 2012-04-30 | 2013-11-06 | LEM Intellectual Property SA | Electrical current transducer module |
| JP2014020980A (en) * | 2012-07-20 | 2014-02-03 | Sumitomo Electric Ind Ltd | Current sensor, bus bar device with sensor equipped with the same, inverter device, and connector |
| JP6127499B2 (en) * | 2012-12-20 | 2017-05-17 | アイシン精機株式会社 | Current sensor |
| JP6268799B2 (en) * | 2013-08-07 | 2018-01-31 | アイシン精機株式会社 | Current sensor |
| JP2015064278A (en) * | 2013-09-25 | 2015-04-09 | スタンレー電気株式会社 | Current sensor |
-
2015
- 2015-08-24 JP JP2015164851A patent/JP2017044486A/en active Pending
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2016
- 2016-06-24 CN CN201620639266.5U patent/CN205809145U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001516A (en) * | 2017-05-08 | 2018-12-14 | 矢崎总业株式会社 | Current sensor |
| CN110100291A (en) * | 2017-08-02 | 2019-08-06 | Ulvac韩国股份有限公司 | The preparation method of electromagnet assembly |
| CN110100291B (en) * | 2017-08-02 | 2022-08-30 | Ulvac韩国股份有限公司 | Preparation method of electromagnet assembly |
| CN113412429A (en) * | 2019-02-18 | 2021-09-17 | 松下知识产权经营株式会社 | Three-phase current detection device |
| CN113607987A (en) * | 2021-07-30 | 2021-11-05 | 重庆长安汽车股份有限公司 | Current sensor structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017044486A (en) | 2017-03-02 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20210624 |