CN104520723A - High-precision whole PCB-mounted closed-loop axisymmetric magnetic circuit magnetic core coil component for hall current sensor - Google Patents
High-precision whole PCB-mounted closed-loop axisymmetric magnetic circuit magnetic core coil component for hall current sensor Download PDFInfo
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- CN104520723A CN104520723A CN201280056673.8A CN201280056673A CN104520723A CN 104520723 A CN104520723 A CN 104520723A CN 201280056673 A CN201280056673 A CN 201280056673A CN 104520723 A CN104520723 A CN 104520723A
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- magnetic core
- magnetic
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- coil component
- current sensor
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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
- G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
- G01R15/202—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices using Hall-effect devices
-
- 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
- H01F27/2804—Printed windings
-
- 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
-
- 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
- G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
- G01R15/207—Constructional details independent of the type of device used
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
A closed-loop axisymmetric magnetic circuit magnetic core coil component for a Hall current sensor includes two skeletons, a magnetic core and coil windings. The skeletons include an inner skeleton and an outer skeleton, wherein the inner skeleton is wound with a secondary coil winding, and the outer skeleton is wound with a primary coil winding. The inner skeleton and the outer skeleton are inserted towards and locked by each other, and a magnetic core slot and jack are provided on the skeletons. A magnetic core is formed by inserting multiple layers of riveting magnetic sheets with different widths towards each other. The magnetic core is of an axisymmetric magnetic circuit structure, and a single air gap is located at the end of the axis of symmetry near the magnetic core, with Hall elements being provided within the air gap. The magnetic core is mounted in the magnetic core slot and jack of the skeletons, and coil windings on the inner and outer skeletons are located on the axis of symmetry of the magnetic core, and the magnetic core coil component is mounted on a printed circuit board. The magnetic core coil component is of a simple structure, is convenient to mount and is of high precision.
Description
Full PCB installing type high precision closed loop types Hall current sensor is used
The present invention relates to current sensor magnetic core coil component field, more particularly to a kind of full PCB installing types high precision closed loop type Hall current sensor axial symmetry magnetic circuit magnetic core coil component in axial symmetry magnetic circuit magnetic core coil component technology field.Background technology
Current sensor is a kind of quite varied electronic building brick of application, and it is widely used in the automatic control field using electric current as control object such as various Semiconductor Converting Technologies, exchange numerical control device.
Many to the non-cpntact measurement and monitoring method of electric current, Hall current sensor forms industrialization because being widely used its excellent cost performance；And full PCB installing type Hall current sensors are generally used for the measurement and monitoring of 5 below OA electric currents.Hall current sensor generally has open loop, two kinds of mode of operations of closed loop, and the full PCB installing types current sensor of both of which is typically all using single air gap, the annular magnetic structure of single punching lamination（See figure one）, there is problems with the current sensor of this magnetic structure：
First, full PCB installing types open ring type Hall current sensor because electric current number of ampere turns it is small, for increase electric current number of ampere turns, primary must be around multiturn, i.e., the coiling multiturn coil on single air gap, single punching lamination toroidal core；To ensure sensor output amplitude, then circuit multiplication factor is big, and zero point, the amplitude of sensor are debugged repeatedly so that open ring type Hall current sensor production efficiency is too low, it is impossible to realize efficiently batch production.And the magnetic structure of this current sensor determines that its magnetic core remanent magnetism is too big（See figure two）, small current measurement precision is had a strong impact on, is 3 times of rated current in its measurement range, precision is preferably 1. 5%FS, and small signal bandwidth can only also accomplish 0- 50KHZ.
Although the 2, full installing type closed-loop type Hall current sensor is realized and produced in batches to being inserted ring core structure and the difference coiling of primary and secondary coil with punching lamination, the exit of its primary thick line circle is difficult accurate install and fixed, influence batch production efficiency；And punching lamination is square to the section for plugging in toroidal core, along with sheath, coil tracks are long, and internal resistance is big, and the linear measurement range of sensor is small, anti-saturation ability；To reduce Coil resistance, overstriking line footpath had both increased the volume and weight of sensor, was unfavorable for sensing
1
Confirm this
Device is minimized, more copper materials are consumed again, make the increase of sensor cost, this structure is without the remanent magnetism for fundamentally solving the problems, such as magnetic core, sensor power supply lags behind monitored electric current to particularly many control systems in time, i.e., first have monitor current then to add sensor power supply.The remanent magnetism problem of magnetic core is more prominent in this case, and the remanent magnetism of passage magnetic core increases in accumulation over time（See figure two）, it is 2 times of rated current in its measurement range, precision is preferably 1. 0%FS, and -3db is with a width of 0- 100KHZ.
The content of the invention
In order to solve the above-mentioned technical problem, it is an object of the invention to provide a kind of simple in construction, easy for installation, precision higher full PCB installing types high precision closed loop Hall current sensor axial symmetry magnetic circuit magnetic core coil component.The present invention complete skill scheme be, a kind of Novel shaft symmetrical magnetic circuits magnetic core coil component, including two skeletons and a magnetic core and coil windings, the skeleton is respectively inner frame and outer skeleton, secondary coil winding is wound with the inner frame, it is wound with primary coil winding on the outer skeleton, the inner frame and outer skeleton are provided with magnetic core slot and jack to anti-inserted lock on the skeleton；
The magnetic core rushes magnetic sheet including different punching width multilayer rivetings and formed to inserting, and the magnetic core is axial symmetry magnetic structure, and single air gap is located on symmetry axis close to the end of magnetic core；The magnetic core is arranged in the magnetic core slot and jack on skeleton；Hall element is provided with the air gap；
Coil windings on the inside and outside skeleton are located on magnetic core symmetry axis；
The magnetic core coil component is arranged on sensor printed wiring board.
The magnetic core leaves to plug part center and a draw pin is provided with dead earth pin hole, the dead earth pin hole, and the draw pin connects through magnetic core ground connection pin hole with ground wire on printed wiring board.
The punching multilayer is odd number to the number of plies of inserting structure magnetic core（7,9,11...).
The magnetic core is topmost and nethermost one layer of axle center magnetic sheet width is less than intermediate layer axle center magnetic sheet width. —―
Magnetic core jack on the inner frame is the magnetic core jack with chamfering, and the angle of the upper magnetic sheet and centre magnetic sheet formation of the inner frame chamfer dimesion and magnetic core axle center magnetic sheet is corresponding；The outer skeleton chamfer dimesion matches with the inner frame chamfer dimesion.
The in-seam is provided with and described 3 close to too end：Your component size match and with symmetry axis magnetic core air gap
The slot that communicates and leave secondary coil termination draw pin installation slotted eye.
The end stop upper end of the outer skeleton is provided with various sizes of armature winding termination fixed groove hole and lower end and leaves outer skeleton and fix the projection on draw pin installation slotted eye, the cover plate of outer casing and the anchor slotted eye tight fit on the outer skeleton.Magnetic core slot band magnetic core ground wire division board on the outer skeleton.
The inside and outside skeleton and shell and cover plate use polyphenylene sulfide（PPS) high-temperature resistance plastice is molded.Therefore, it is of the invention to be had the advantages that compared with present technology：
1st, axial symmetry magnetic structure of the invention and single air gap are located at symmetry axis Shang Shi and disappeared the influence of magnetic core remanent magnetism and electromagnetic interference, the precision and jamproof ability of current sensor is set to be greatly improved, small current measurement precision is reached within 0. 2%FS.
2nd, match with different punching width multilayers to plug in magnetic core and with chamfering skeleton so that in secondary rolling thread region under the conditions of identical line footpath, the identical number of turn, coil tracks are short, internal resistance is small, linear sensor measurement range is big；Optimal electromagnetic isolation and coupling are formed to anti-inserted lock construction with the inside and outside skeleton of coiling respectively time, armature winding；The electronic circuit relevant with another patent application of applicant is supported the use, and the measurement range of sensor is reached 3 times of rated current, the response time is less than 1. 0uS, and -3db bandwidth reaches more than 0-100KHZ.
3rd, anchor slotted eye is installed in the primary coil termination of skeleton in addition and cover plate of outer casing projection is fitted close and the anti-tracking structure with magnetic core ground wire division board improves dielectric strength, and insulation voltage reaches more than 5KV.
4th, it is simple in construction, it is easily manufactured.Skeleton is produced in enormous quantities with injection mold；Within outer skeleton realize that the prefabricated processing assembling of primary and secondary coil is integral to anti-inserted lock and with the skeleton structure that primary and secondary coil end installs fixed slotted eye, primary and secondary coil end is firmly installed, conveniently.
5th, Hall element is arranged in air gap groove, can guarantee that Hall element sensitivity center is always positioned on magnetic core air gap geometric center position, the uniformity of installation is good, so as to ensure that the consistency of performance of sensor.
6th, with circuit printed board is easy to connect and small volume.Primary and secondary coil can customize processing in advance according to the size of rated current；Through primary fixing hole on skeleton after the wicking of armature winding termination；Secondary windings two ends are hooked respectively to be wrapped on press-in skeleton in the draw pin of secondary termination fixation slotted eye, inside and outside skeleton is to inserting and locking after wicking, install magnetic core, so constitute the magnetic core coil component of monolithic construction, it can be arranged on sensor line plate, be realized certainly with SMD hybrid techniques using it as an electronic component with pin
Dynamicization is produced in enormous quantities, while realizing that current sensor is miniaturized.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, does not constitute inappropriate limitation of the present invention, in the accompanying drawings：
Fig. 1 is single-loop magnetic core Distribution of Magnetic Field；
Fig. 2 is distributed for single-loop magnetic core remnant field；
Fig. 3 is axial symmetry loop magnetic core magnetic field distribution；
Fig. 4 is distributed for axial symmetry loop magnetic core remnant field.
Embodiment
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, illustrative examples of the invention and explanation are used for explaining the present invention herein, but not as a limitation of the invention.Embodiment 1:
A kind of the present embodiment full PCB installing types closed-loop type Hall current sensor axial symmetry magnetic circuit magnetic core coil component, including two skeletons and a magnetic core and coil windings, the skeleton is respectively inner frame and outer skeleton, secondary coil winding is wound with the inner frame, primary coil winding is wound with the outer skeleton, the inner frame and outer skeleton are provided with magnetic core slot and jack to anti-inserted lock on the skeleton；Magnetic core rushes magnetic sheet with different punching width multilayer rivetings and formed to inserting, punching multilayer typically uses odd number to the number of plies of inserting structure magnetic core, such as 7, 9, 11 layers etc., to ensure that multilayer is full symmetric to the magnetic circuit for plugging in the magnetic core of axial symmetry magnetic structure, the present embodiment is 7 layers, magnetic core is symmetrical magnetic circuits structure, single air gap is located on symmetry axis close to the end of magnetic core, magnetic core is arranged in magnetic core jack, magnetic core leaves dead earth pin hole to plug part center, a draw pin is provided with dead earth pin hole, draw pin connects through magnetic core ground connection pin hole with ground wire on printed wiring board, Hall element is provided with air gap；To minimize core volume, secondary rolling thread region must be made minimum, magnetic core is topmost and nethermost one layer of axle center magnetic sheet width is less than intermediate layer axle center magnetic sheet width, magnetic core jack on skeleton is the magnetic core jack with chamfering, and the angle of the upper magnetic sheet and centre magnetic sheet formation of inner frame chamfer dimesion and magnetic core axle center magnetic sheet is corresponding；Outer skeleton chamfer dimesion matches with inner frame chamfer dimesion；Inner frame be provided with close to end with Hall element matching size and with symmetry axis magnetic core
Slot and leave secondary coil termination draw pin installation slotted eye that air gap is communicated；The end stop upper end of outer skeleton is provided with various sizes of armature winding termination fixed groove hole and lower end and leaves outer skeleton and fix draw pin installation slotted eye, projection on cover plate of outer casing is fitted close with the anchor slotted eye on outer skeleton, and anti-tracking structure of the magnetic core slot with magnetic core ground wire division board on outer skeleton improves dielectric strength；In order that magnetic core coil component and sensor reach the automatic soldering technique requirement such as second reflow, wave-soldering, inside and outside skeleton, the shell and cover plate for realizing the overall empty envelope of sensor etc. uses polyphenylene sulfide（PPS) high-temperature resistance plastice injection is completed.
Therefore, the axial symmetry magnetic structure and single air gap of the present invention is located at the influence that magnetic core remanent magnetism and electromagnetic interference are counteracted on symmetry axis, the precision and jamproof ability of current sensor is set to be greatly improved, small current measurement precision is reached within 0. 2 FS.
Matched with different punching width multilayers to plug in magnetic core and with chamfering skeleton so that in secondary rolling thread region under the conditions of identical line footpath, the identical number of turn, coil tracks are short, internal resistance is small, linear sensor measurement range is big；Optimal electromagnetic isolation and coupling are formed to anti-inserted lock construction with the inside and outside skeleton of coiling respectively time, armature winding；The electronic circuit relevant with another patent application of applicant is supported the use, and the measurement range of sensor is reached 3 times of rated current, the response time is less than 1. OuS, and -3db bandwidth reaches more than 0-100KHZ.
The primary coil termination of skeleton is installed anchor slotted eye and is fitted close with cover plate of outer casing projection and the anti-tracking structure raising dielectric strength with magnetic core ground wire division board in addition, and insulation voltage reaches more than 5KV.
It is simple in construction, it is easily manufactured.Skeleton is produced in enormous quantities with injection mold；Within outer skeleton realize that the prefabricated processing assembling of primary and secondary coil is integral to anti-inserted lock and with the skeleton structure that primary and secondary coil end installs fixed slotted eye, primary and secondary coil end is firmly installed, conveniently.
Hall element is arranged in air gap groove, can guarantee that Hall element sensitivity center is always positioned on magnetic core air gap geometric center position, the uniformity of installation is good, so as to ensure that the consistency of performance of sensor.
With circuit printed board is easy to connect and small volume.Primary and secondary coil can customize processing in advance according to the size of rated current；Through primary fixing hole on skeleton after the wicking of armature winding termination；Secondary windings two ends are hooked respectively to be wrapped on press-in skeleton in the draw pin of secondary termination fixation slotted eye, inside and outside skeleton is to inserting and locking after wicking, install magnetic core, so constitute the magnetic core coil component of monolithic construction, it can be arranged on sensor line plate, be realized with SMD hybrid techniques automatic using it as an electronic component with pin
P T/CN2012/000155ization are produced in enormous quantities, while realizing that current sensor is miniaturized.
The technical scheme provided above the embodiment of the present invention is described in detail, specific case used herein is set forth to the principle and embodiment of the embodiment of the present invention, and the explanation of above example is only applicable to help the principle for understanding the embodiment of the present invention；Simultaneously for those of ordinary skill in the art, according to the embodiment of the present invention, it will change in embodiment and application, in summary, this specification content should not be construed as limiting the invention.
Claims (1)
- Claims1st, full PCB installing types high precision closed loop Hall current sensor axial symmetry magnetic circuit magnetic core coil component, it is characterized in that, including two skeletons and a magnetic core and coil windings, the skeleton is respectively inner frame and outer skeleton, secondary coil winding is wound with the inner frame, it is wound with primary coil winding on the outer skeleton, the inner frame and outer skeleton are provided with magnetic core slot and jack to anti-inserted lock on the skeleton；The magnetic core rushes magnetic sheet including different punching width multilayer rivetings and formed to inserting, and the magnetic core is axial symmetry magnetic structure, and single air gap is located on symmetry axis close to the end of magnetic core；The magnetic core is arranged in the magnetic core slot and jack on skeleton；Hall element is provided with the air gap；Coil windings on the inside and outside skeleton are located on magnetic core symmetry axis；The magnetic core coil component is arranged on sensor printed wiring board.2nd, full PCB installing types high precision closed loop Hall current sensor according to claim 1 axial symmetry magnetic circuit magnetic core coil component, it is characterized in that, the magnetic core leaves dead earth pin hole to plug part center, a draw pin is provided with the dead earth pin hole, the draw pin connects through magnetic core ground connection pin hole with ground wire on printed wiring board.3rd, full PCB installing types high precision closed loop Hall current sensor according to claim 1 axial symmetry magnetic circuit magnetic core coil component, it is characterized in that, the punching multilayer is odd number (7,9,11 ..) to the number of plies of inserting structure magnetic core5th, full PCB installing types high precision closed loop Hall current sensor according to claim 1 axial symmetry magnetic circuit magnetic core coil component, characterized in that, the magnetic core is topmost less than intermediate layer axle center magnetic sheet width with nethermost one layer of axle center magnetic sheet width.6th, full PCB installing types high precision closed loop Hall current sensor according to claim 5 axial symmetry magnetic circuit magnetic core coil component, it is characterized in that, magnetic core jack on the inner frame is the magnetic core jack with chamfering, and the angle of the upper magnetic sheet and centre magnetic sheet formation of the inner frame chamfer dimesion and magnetic core axle center magnetic sheet is corresponding；The outer skeleton chamfer dimesion and the inner frame chamfer dimesion Kashiwa Str-7th, full PCB installing types high precision closed loop Hall current sensor according to claim 1 axial symmetry magnetic circuit magnetic core coil component, characterized in that, slot that the inner frame is provided with the Hall element matching size close to end and communicated with symmetry axis magnetic core air gap and leaving secondary coil termination draw pin installation slotted eye. 8th, full PCB installing types high precision closed loop Hall current sensor according to claim 1 axial symmetry magnetic circuit magnetic core coil component, it is characterized in that, the end stop upper end of the outer skeleton is provided with various sizes of armature winding termination fixed groove hole and lower end and leaves outer skeleton and fix the projection on draw pin installation slotted eye, the cover plate of outer casing and the anchor slotted eye tight fit on the outer skeleton.Magnetic core slot band magnetic core ground wire division board on the outer skeleton.9th, full PCB installing types high precision closed loop Hall current sensor according to claim 8 axial symmetry magnetic circuit magnetic core coil component, it is characterised in that the inside and outside skeleton and shell and cover plate are using poly- stupid stone gram ether（PPS) high-temperature resistance plastice is molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201280056673.8A CN104520723A (en) | 2012-01-19 | 2012-02-09 | High-precision whole PCB-mounted closed-loop axisymmetric magnetic circuit magnetic core coil component for hall current sensor |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220026537 CN202711934U (en) | 2012-01-19 | 2012-01-19 | Axisymmetric magnetic circuit and magnetic core coil block for full printed circuit board (PCB) installation type high-precision closed loop type Hall current transducer |
| CN2012200265371 | 2012-01-19 | ||
| PCT/CN2012/000155 WO2013106959A1 (en) | 2012-01-19 | 2012-02-09 | High-precision whole pcb-mounted closed-loop axisymmetric magnetic circuit magnetic core coil component for hall current sensor |
| CN201280056673.8A CN104520723A (en) | 2012-01-19 | 2012-02-09 | High-precision whole PCB-mounted closed-loop axisymmetric magnetic circuit magnetic core coil component for hall current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104520723A true CN104520723A (en) | 2015-04-15 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220026537 Expired - Lifetime CN202711934U (en) | 2012-01-19 | 2012-01-19 | Axisymmetric magnetic circuit and magnetic core coil block for full printed circuit board (PCB) installation type high-precision closed loop type Hall current transducer |
| CN201280056673.8A Pending CN104520723A (en) | 2012-01-19 | 2012-02-09 | High-precision whole PCB-mounted closed-loop axisymmetric magnetic circuit magnetic core coil component for hall current sensor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220026537 Expired - Lifetime CN202711934U (en) | 2012-01-19 | 2012-01-19 | Axisymmetric magnetic circuit and magnetic core coil block for full printed circuit board (PCB) installation type high-precision closed loop type Hall current transducer |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN202711934U (en) |
| WO (1) | WO2013106959A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548658A (en) * | 2015-12-31 | 2016-05-04 | 深圳青铜剑科技股份有限公司 | Closed-loop Hall current sensor |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202711934U (en) * | 2012-01-19 | 2013-01-30 | 邹高芝 | Axisymmetric magnetic circuit and magnetic core coil block for full printed circuit board (PCB) installation type high-precision closed loop type Hall current transducer |
| EP3026444B1 (en) * | 2014-11-28 | 2017-08-23 | LEM Intellectual Property SA | Electrical current transducer |
| CN105869828B (en) * | 2015-01-22 | 2018-10-09 | 台达电子工业股份有限公司 | Magnetic element |
| CN104931761A (en) * | 2015-05-25 | 2015-09-23 | 山东航天电子技术研究所 | Magnetic circuit structure of high-precision Hall current sensor |
| CN105548646A (en) * | 2015-12-31 | 2016-05-04 | 深圳青铜剑科技股份有限公司 | Closed-loop Hall current sensor |
| CN105572438A (en) * | 2016-03-21 | 2016-05-11 | 山东交通学院 | Current sensor processing technology |
| CN108535527B (en) * | 2018-06-05 | 2023-12-05 | 南京普肯传感科技有限公司 | Full PCB installation type closed loop Hall current sensor installation structure |
| KR102110344B1 (en) * | 2018-12-28 | 2020-05-14 | 주식회사 엠에스티테크 | Transformer and method of manufacturing thereof |
| CN110993243B (en) * | 2020-01-13 | 2025-02-14 | 上海万森低碳科技有限公司 | Coil connector, coil winding device and method |
| CN111740465B (en) * | 2020-07-06 | 2022-09-20 | 歌尔科技有限公司 | Battery charge-discharge detection device and intelligent wearable equipment |
| CN113970663A (en) * | 2021-10-26 | 2022-01-25 | 中国电子科技集团公司第四十九研究所 | Magnetic core for closed-loop Hall current sensor |
| CN113990656A (en) * | 2021-11-24 | 2022-01-28 | 中国船舶重工集团公司第七0七研究所 | High-precision winding tool and winding method for flat enameled wire winding of sensor |
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| JP2003324024A (en) * | 2002-02-26 | 2003-11-14 | Sumida Corporation | Casing of current sensor device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1450176A1 (en) * | 2003-02-21 | 2004-08-25 | Liaisons Electroniques-Mecaniques Lem S.A. | Magnetic field sensor and electrical current sensor therewith |
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2012
- 2012-01-19 CN CN 201220026537 patent/CN202711934U/en not_active Expired - Lifetime
- 2012-02-09 WO PCT/CN2012/000155 patent/WO2013106959A1/en active Application Filing
- 2012-02-09 CN CN201280056673.8A patent/CN104520723A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003324024A (en) * | 2002-02-26 | 2003-11-14 | Sumida Corporation | Casing of current sensor device |
| CN1570654A (en) * | 2004-04-28 | 2005-01-26 | 邹高芝 | Magnetic core sheath free coil magnetic core pack for current sensor |
| TW200832461A (en) * | 2007-01-19 | 2008-08-01 | Delta Electronics Inc | Current sensor component and assembling method thereof |
| CN201796075U (en) * | 2010-09-21 | 2011-04-13 | 上海昱恩科技有限公司 | Coil framework suit for current sensor |
| CN202711934U (en) * | 2012-01-19 | 2013-01-30 | 邹高芝 | Axisymmetric magnetic circuit and magnetic core coil block for full printed circuit board (PCB) installation type high-precision closed loop type Hall current transducer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548658A (en) * | 2015-12-31 | 2016-05-04 | 深圳青铜剑科技股份有限公司 | Closed-loop Hall current sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN202711934U (en) | 2013-01-30 |
| WO2013106959A1 (en) | 2013-07-25 |
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