CN208188185U - A kind of full PCB installing type closed-loop type Hall current sensor mounting structure - Google Patents
A kind of full PCB installing type closed-loop type Hall current sensor mounting structure Download PDFInfo
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- CN208188185U CN208188185U CN201820871307.2U CN201820871307U CN208188185U CN 208188185 U CN208188185 U CN 208188185U CN 201820871307 U CN201820871307 U CN 201820871307U CN 208188185 U CN208188185 U CN 208188185U
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Abstract
A kind of full PCB installing type closed-loop type Hall current sensor mounting structure, is related to Hall current sensor fitting structural assembly field.The magnetic core, skeleton, pcb board of the utility model are all installed on the shell；Air gap is arranged in the end attachment of core center column；The Hall element of chip package is provided in the air gap；The skeleton includes inner frame and outer skeleton；It pastes Hall element window portion on the pcb board to be inserted into the slot of the inner frame and communicate with the air gap of the magnetic core, the secondary windings is connected with the circuit on the pcb board；The mounting hole of setting installation inner frame, outer skeleton on the shell, pin mounting hole or slot for installing armature winding is set on the shell, slot and fixed pin hole for installing fixed magnetic core is set on the shell, the buckle for installing pcb board is set on the shell.The utility model realizes simple structure, easy for installation, precision and jamproof ability is higher, the wider array of purpose of application field.
Description
Technical field
The utility model relates to Hall current sensor fitting structural assembly fields, more particularly to full PCB installing type closed loop
Type Hall current sensor mounting structure.
Background technique
Current sensor is a kind of using very extensive electronic building brick, it is widely used in various Semiconductor Converting Technologies, friendship
It flows in the automatic control field using electric current as control object such as numerical control device.
Many to the non-cpntact measurement and monitoring method of electric current, Hall current sensor is extensive because of its excellent cost performance
Using and form industrialization；And full PCB installing type closed-loop type Hall current sensor is generally used for the measurement of 100A or less electric current
And monitoring.Hall current sensor usually has two kinds of open loop, closed loop operating modes, the full PCB installing type Hall electricity of both of which
Flow sensor is generally used single air gap, single multilayer punching toroid structure, the current sensor of this magnetic structure
It has the following problems:
One, full PCB installing type open ring type Hall current sensor because electric current number of ampere turns it is small, for increase electric current number of ampere turns, just
Grade must be around multiturn, i.e., the coiling multiturn coil on single air gap, single multilayer punching toroidal core, since magnetic core size is smaller,
High-volume coiling processing is relatively time consuming, bothersome；And to ensure sensor output amplitude, then circuit amplification factor is big, the zero of sensor
Point, amplitude are debugged repeatedly, so that open ring type Hall current sensor production efficiency is too low, cannot achieve efficient mass production.
And the magnetic structure of this current sensor determines that its magnetic core remanent magnetism is too big, seriously affects small current measurement precision, in its survey
Amount range is 3 times of rated current, and precision is preferably 1.5%FS, and small signal bandwidth can only also accomplish 0-50KHZ.
Although two, full PCB installing type closed-loop type Hall current sensor with multilayer punching to slotting ring core structure and just,
Secondary coil distinguishes coiling and realizes batch production, but the exit of its primary thick line circle is not easy accurately to install and fix, and influences batch
Production efficiency；And multilayer punching be to the section of plug in toroidal core it is rectangular, add skeleton, coil tracks are long, and internal resistance is big, sensing
The linear measurement range of device is small, and anti-saturation ability is poor；For reduce Coil resistance, overstriking line footpath, both increased sensor volume and
Weight is unfavorable for sensor miniaturization, and consumes more copper materials, makes sensor increased costs, this structure is without fundamentally
Solve the problems, such as the remanent magnetism of magnetic core, Hall current sensor power supply is lagged behind and supervised especially many control systems in time
Electric current is controlled, i.e., first has 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 magnetic core increases in accumulation as time goes by, is 2 times of rated current in its measurement range, precision is preferably 1.0%
FS, -3db bandwidth are 0-100KHZ.
Three, since the primary and secondary coil of full PCB installing type closed-loop type Hall current sensor is located at magnetic core both sides, add
It is fixed on pcb board after the completion of work, then is installed in shell with the pin on skeleton, with casting glue overall perfusion, at the beginning of
Secondary coil all seals, and in larger current or when working long hours, the heat that coil generates can not be emitted, and Hall current passes
The temperature of sensor shell significantly increases, and zero point, the amplitude drift of Hall current sensor are bigger, seriously affects Hall current
The measurement accuracy of sensor and resistance to environment capacity！Also the application field and versatility of Hall current sensor are limited！
Utility model content
In order to solve the above-mentioned technical problem, it is simple, easy for installation, smart that the purpose of this utility model is to provide a kind of structures
Degree and jamproof ability is higher, the wider array of full PCB installing type closed-loop type Hall current sensor mounting structure of application field.
The utility model adopts the following technical solution:
Full PCB installing type closed-loop type Hall current sensor mounting structure, including shell, magnetic core, fixed pin, skeleton, PCB
Plate, the magnetic core, skeleton, pcb board are all installed on the housing；
The newel of the magnetic core is topmost and nethermost center magnetic sheet width is less than center of the interlayer magnetic sheet width, institute
State the end attachment setting air gap of core center column；The Hall element of chip package is provided in the air gap；The magnetic core pair
There are pin hole is fixed at interpolating unit branch center, fixed pin is placed in the fixed pin hole；
The skeleton includes inner frame and outer skeleton, has secondary windings on the inner frame, has armature winding on outer skeleton,
To anti-inserted lock, the inner frame, outer skeleton, armature winding, secondary windings are located in the magnetic core for the inner frame and outer skeleton
On stem, the armature winding, secondary windings central part be overlapped, the armature winding directly it is exposed in air；
The core center column jack for connecting inner frame is the magnetic core jack of chamfering, the magnetic core jack chamfering
The upper magnetic sheet of size and core center column magnetic sheet and the angle that intermediate magnetic sheet is formed are corresponding；Two end-stopping plates on the inner frame
Also there is chamfering and there are the slots of installation magnetic core；
The slot for installing the pcb board, the slot and the magnetic core are provided on one end-stopping plate of the inner frame
Air gap on newel communicates；There are secondary end draw pin installation slotted eyes for the baffle two sides；
Inner frame mounting hole is set on the outer skeleton, and chamfering, chamfer dimesion and institute is arranged in the inner frame mounting hole
The two end-stopping plate chamfer dimesions for stating inner frame match；There are tongues at outer skeleton chamfering；
There are the slots of the baffle installed on the shell and magnetic core installation for one end of the outer skeleton；The other end there are with it is interior
Buckle of the skeleton to anti-inserted lock；
After the inner frame and outer skeleton are to anti-inserted lock, the secondary windings on the inner frame passes through the outer skeleton chamfering
There are tongues at place communicates with outside air；
Hall element window portion is pasted on the pcb board to be inserted into the slot of the inner frame and the air gap with the magnetic core
It communicates, the secondary windings is connected with the circuit on the pcb board；
The mounting hole of setting installation inner frame, outer skeleton on the shell, on the shell setting for install it is primary around
The pin mounting hole or slot of group, setting is for installing the slot and fixed pin hole of fixed magnetic core, the shell on the shell
The upper buckle being arranged for installing pcb board.
It is preferable to it is center symmetrical magnetic circuits structure that the magnetic core of the utility model, which rushes magnetic sheet by lamination riveting and forms to slotting,.
It is preferable to one end of the fixed pin of the utility model is made into major part, and major part portion size is slightly larger than shell
On the fixed pinhole size of magnetic core, the fixed pin passes through the fixed pin hole of magnetic core, and major part part is fixed with the magnetic core on shell
Pin hole tight fit.
It is preferable to the fixed pin of the utility model is at least two.
It is preferable to, the utility model be wound on the armature winding on outer skeleton using thick circle copper enameled wire coiling or
With the air core coil of copper sheet cold punching machine-shaping.
It is preferable to the odd numbers that the number of plies of the magnetic core of the utility model is at least seven layers.
It is preferable to be arranged cover board on the shell of the utility model.
It is preferable to be arranged the slot and buckle for installing cover board on the shell of the utility model.
It is preferable to, the inner frame of the utility model, outer skeleton, shell and cover board be all made of high-temperature resistance plastice injection molding and
At.
Therefore the utility model has the advantages that compared with present technology:
1, it is provided with mounting hole corresponding with the inside and outside skeleton size, armature winding pin mounting hole on shell or inserts
The fixed slot of slot, magnetic core installation and fixed pin hole, the buckle of pcb board installation, when needing cover board installation slot and buckle；Magnetic
For core to, there are fixed pin hole, fixing in pin hole at interpolating unit branch center and being provided with a fixed pin, one end of fixed pin is made into major part,
Its major part portion size passes through the fixed pin hole of magnetic core, major part part slightly larger than the fixed pore size of magnetic core on shell, fixed pin
With the fixed pin hole tight fit of magnetic core on shell.Entire installation carries out all centered on shell, has not both needed to weld, tighten up a screw,
Encapsulating is not needed again, completes the installation of Hall current sensor with the cooperation of slot, buckle and shell and component, all zero
Part can be used as standard component or mold or in advance customization processing, the different work of different components in the assembling of current sensor
Dress realizes automatic streamline production, increases substantially production efficiency, while the outer dimension of current sensor and volume are also greatly
It reduces！
2, central symmetry magnetic structure and single air gap, which are located on core center line, counteracts magnetic core remanent magnetism and electromagnetic interference
Influence so that the precision and jamproof ability of full PCB installation closed-loop type current sensor are greatly improved, 100A with
Lower current measurement precision reaches within 0.2%FS.
3, match with different punching width multilayers to slotting magnetic core and with chamfering skeleton so that in secondary rolling thread region
Under the conditions of identical line footpath, identical the number of turns, coil tracks are short, internal resistance is small, linear sensor measurement range is big；Within outer skeleton difference
Coiling time, armature winding geometric center be overlapped to form best electromagnetic isolation and coupling；The measurement range of sensor is set to reach 3 times
Rated current, response time are less than 1.0uS, and -3db bandwidth reaches 0-100KHZ or more.
4, the secondary windings on inner frame is communicated by the way that there are tongues at outer skeleton chamfering with outside air；On outer skeleton
Armature winding is directly exposed both to improve dielectric strength in air, and insulation voltage reaches 5KV or more；Make primary and secondary winding again
The temperature rise generated at work reduces, and the operating temperature of current sensor reaches -40~85 DEG C, has expanded full PCB installation closed loop
The application field of type Hall current sensor！
5, chip Hall element in window, can guarantee Hall element sensitivity center position always on PCB with SMD process Installation
In on magnetic core air gap geometric center position, the consistency of installation is good, to ensure that the consistency of performance of sensor.
Detailed description of the invention
Symmetrical magnetic core magnetic field pattern centered on Fig. 1.
Symmetrical magnetic core remnant field distribution map centered on Fig. 2.
Fig. 3 is the current sensor part diagram of the utility model.
Fig. 4 is the current sensor product final assemble figure of the utility model.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing and specific embodiment, in the signal of this utility model
Property embodiment and explanation be used to explain the utility model, but be not intended to limit the scope of the present invention.
As shown, full PCB installing type closed-loop type Hall current sensor mounting structure, including shell 1, magnetic core 6, fixation
Needle 8, skeleton, pcb board 5；The magnetic core 6, skeleton, pcb board 5 are all mounted on the shell 1；
The newel of the magnetic core 6 is topmost and nethermost center magnetic sheet width is less than center of the interlayer magnetic sheet width,
Air gap is arranged in the end attachment of 6 newel of magnetic core；The Hall element of chip package is provided in the air gap；The magnetic core
There are pin hole is fixed at 6 pairs of interpolating unit branch centers, fixed pin 8 is placed in the fixed pin hole；
The skeleton includes inner frame 2 and outer skeleton 3, has secondary windings on the inner frame 2, has primary on outer skeleton 3
Winding 4, with outer skeleton 3 to anti-inserted lock, the inner frame 2, outer skeleton 3, armature winding 4, secondary windings are located at the inner frame 2
On the core center column, the armature winding 4, secondary windings central part be overlapped, the armature winding 4 it is directly exposed
In air；
The core center column jack for connecting inner frame 2 is the magnetic core jack of chamfering, and the magnetic core jack falls
Angle square cun is corresponding with the upper magnetic sheet of core center column magnetic sheet and the angle of intermediate magnetic sheet formation；Both ends on the inner frame 2
Baffle also has chamfering and there are the slots of installation magnetic core 6；
The slot for installing the pcb board 5, the slot and the magnetic are provided on one end-stopping plate of the inner frame 2
Air gap on core newel communicates；There are secondary end draw pin installation slotted eyes for the baffle two sides；
Inner frame mounting hole is set on the outer skeleton 3, and chamfering, chamfer dimesion and institute is arranged in the inner frame mounting hole
The two end-stopping plate chamfer dimesions for stating inner frame 2 match；There are tongues at outer 3 chamfering of skeleton；
There are the slots that the baffle being mounted on shell 1 and magnetic core 6 are installed for one end of the outer skeleton 3；The other end there are
With inner frame 2 to the buckle of anti-inserted lock；
After the inner frame 2 and outer skeleton 3 are to anti-inserted lock, the secondary windings on the inner frame 2 passes through the outer skeleton 3
There are tongues at chamfering communicates with outside air；
Pasted on the pcb board 5 Hall element window portion be inserted into the slot of the inner frame 2 and with the magnetic core 6
Air gap communicates, and the secondary windings is connected with the circuit on the pcb board 5；
The mounting hole of inner frame 2, outer skeleton 3 is installed in setting on the shell 1, and setting is for installing just on the shell 1
The pin mounting hole or slot of grade winding 4, setting is for installing the slot and fixed pin hole of fixed magnetic core 6, institute on the shell 1
State the buckle being arranged on shell 1 for installing pcb board 5.
It is formed as shown, the magnetic core 6 of the utility model rushes magnetic sheet by lamination riveting to slotting, is center symmetrical magnetic circuits structure.
As shown, one end of the fixed pin 8 of the utility model is made into major part, major part portion size is slightly larger than on shell
The fixed pinhole size of magnetic core, the fixed pin 8 passes through the fixed pin hole of magnetic core, the magnetic core fixed pin on major part part and shell
Hole precision-fit.
As shown, the fixed pin 8 of the utility model is at least two.
As shown, the armature winding 4 being wound on outer skeleton 3 of the utility model uses thick circle copper enameled wire coiling
Or the air core coil with copper sheet cold punching machine-shaping.
As shown, the odd number that the number of plies of the magnetic core 6 of the utility model is at least seven layers.The number of plies of magnetic core 6 is 7,9,11
Deng.
As shown, cover board 7 is arranged on the shell 1 of the utility model.
As shown, the slot and buckle for installing cover board 7 are arranged on the shell 1 of the utility model.
Inner frame 2, outer skeleton 3, shell 1 and cover board 7 are all made of high-temperature resistance plastice and are molded.
Embodiment:
The full PCB installing type closed-loop type Hall current sensor mounting structure of the present embodiment, including a shell and needs
When cover board, a magnetic core and two fixed pins, two skeletons and coil windings, one piece of pcb board.Skeleton and lid when needing
Plate, pcb board, magnetic core installation are on the shell.There is secondary windings on inner frame, there is armature winding, inside and outside skeleton and line on outer skeleton
Circle winding is located on core center column；Magnetic core rushes magnetic sheet by lamination riveting and forms to slotting, and magnetic core is center symmetrical magnetic circuits structure, air gap
Positioned at the end close to core center column；Hall element is provided in air gap, Hall element is chip package；It is pasted suddenly on pcb board
It is communicated in the slot of your cell window partial insertion inner frame and with magnetic core air gap, secondary windings is connected with the circuit on pcb board
It connects.
Specific implementation step are as follows:
1, the components all with mold or customization processing electric current sensor；
2, chip Hall element and other chip electronic components are automatically installed in the pcb board that 5 rows 5 arrange with SMD technique
On jigsaw；
3, different number of secondary turns are corresponded to by different primary currents with 8 fully automatic wire winding machines and processes secondary windings, secondary wire
Two ends of circle are respectively wound around automatically on the pin of inner frame, have been soaked tin and have been planted by required pin length；
4, secondary windings will be processed and other electronic components with pin are mounted on weld chip electronic member device one by one
On the pcb board jigsaw of part, the pcb board jigsaw of 2-4 5 rows is installed on overcurrent frame, it, will with solder wave process automatic welding
The pcb board jigsaw of 5 rows is divided into 5 pcb boards 5；
5, armature winding 4 is inserted on shell 1 in primary mounting hole, primary skeleton 3 is passed through into shell 1, armature winding 4 is pacified
On shell 1；Secondary windings on pcb board 5 is inserted into primary skeleton 3, pcb board 5 is pressed onto bottom with tooling, makes pcb board 5
It is fixed on shell 1 in buckle；
6, magnetic core 6 is mounted on shell 1 by slot on shell 1 to slotting, makes the fixation pin hole and shell 1 on magnetic core 6
The fixed pin hole of magnetic core communicates, and by the fixation pin hole on 2 insertion of fixed pins 8 shells 1, magnetic core 6, is pressed onto bottom with tooling；
7, regulated with zero point of the laser resistor trimming equipment to current sensor, with the automatic barcode scanning of computer automatic test equipment,
After test, record, judgement are qualified, to pcb board brushing three-proofing coating, cover board 7 is inserted on shell 1 by airing or drying when necessary
It, will be in the indentation buckle of cover board 7 with tooling in slot；
8, by after the current sensor laser marking assembled, factory is automatic after the assay was approved, is packed and stored.
Technical solution provided by the utility model embodiment is described in detail above, it is used herein specifically
A example is expounded the principle and embodiment of the utility model embodiment, and the explanation of above embodiments is only applicable to help
Assistant solves the principle of the utility model embodiment；At the same time, for those skilled in the art is implemented according to the utility model
Example, there will be changes in terms of specific embodiments and scope of application, in conclusion the content of the present specification should not be construed as
Limitations of the present invention.
Claims (9)
1. a kind of full PCB installing type closed-loop type Hall current sensor mounting structure, which is characterized in that including shell (1), magnetic core
(6), fixed pin (8), skeleton, pcb board (5)；The magnetic core (6), skeleton, pcb board (5) are all mounted on the shell (1)；
The newel of the magnetic core (6) is topmost and nethermost center magnetic sheet width is less than center of the interlayer magnetic sheet width, institute
State the end attachment setting air gap of magnetic core (6) newel；The Hall element of chip package is provided in the air gap；The magnetic core
(6) to there are fixed pin hole, placing fixed pin (8) in the fixed pin hole at interpolating unit branch center；
The skeleton includes inner frame (2) and outer skeleton (3), has secondary windings on the inner frame (2), has on outer skeleton (3)
Armature winding (4), the inner frame (2) and outer skeleton (3) are to anti-inserted lock, the inner frame (2), outer skeleton (3), armature winding
(4), secondary windings is located on the core center column, the central part coincidence of the armature winding (4), secondary windings, described
Armature winding (4) directly it is exposed in air；
The core center column jack for connecting inner frame (2) is the magnetic core jack of chamfering, the magnetic core jack chamfering
The upper magnetic sheet of size and core center column magnetic sheet and the angle that intermediate magnetic sheet is formed are corresponding；Both ends on the inner frame (2)
Baffle also has chamfering and there are the slots of installation magnetic core (6)；
The slot for installing the pcb board (5), the slot and the magnetic are provided on one end-stopping plate of the inner frame (2)
Air gap on core newel communicates；There are secondary end draw pin installation slotted eyes for the baffle two sides；
Inner frame mounting hole is set on the outer skeleton (3), the inner frame mounting hole is arranged chamfering, chamfer dimesion with it is described
Two end-stopping plate chamfer dimesions of inner frame (2) match；There are tongues at outer skeleton (3) chamfering；
There are the slots that the baffle being mounted on shell (1) and magnetic core (6) are installed for one end of the outer skeleton (3)；The other end stays
There is the buckle with inner frame (2) to anti-inserted lock；
After the inner frame (2) and outer skeleton (3) are to anti-inserted lock, the secondary windings on the inner frame (2) passes through the dermoskeleton
There are tongues at frame (3) chamfering communicates with outside air；
Pasted on the pcb board (5) Hall element window portion be inserted into the slot of the inner frame (2) and with the magnetic core (6)
Air gap communicate, the secondary windings is connected with the circuit on the pcb board (5)；
The mounting hole of inner frame (2), outer skeleton (3) is installed in setting on the shell (1), is arranged on the shell (1) for pacifying
The pin mounting hole or slot for filling armature winding (4), on the shell (1) setting for install fixed magnetic core (6) slot and
Pin hole is fixed, the buckle for installing pcb board (5) is set on the shell (1).
2. full PCB installing type closed-loop type Hall current sensor mounting structure according to claim 1, it is characterised in that institute
Stating magnetic core (6) and rushing magnetic sheet by lamination riveting is center symmetrical magnetic circuits structure to slotting form.
3. full PCB installing type closed-loop type Hall current sensor mounting structure according to claim 1, it is characterised in that institute
The one end for stating fixed pin (8) is made into major part, and major part portion size is described solid slightly larger than the fixed pinhole size of magnetic core on shell
Determine the fixed pin hole tight fit of magnetic core of needle (8) on the fixed pin hole of magnetic core, major part part and shell.
4. full PCB installing type closed-loop type Hall current sensor mounting structure according to claim 3, it is characterised in that institute
It states fixed pin (8) and is at least two.
5. full PCB installing type closed-loop type Hall current sensor mounting structure according to claim 1, it is characterised in that institute
The armature winding (4) that is wound on outer skeleton (3) is stated using thick circle copper enameled wire coiling or with copper sheet cold punching machine-shaping
Air core coil.
6. full PCB installing type closed-loop type Hall current sensor mounting structure according to claim 1, it is characterised in that institute
State the odd number that the number of plies of magnetic core (6) is at least seven layers.
7. full PCB installing type closed-loop type Hall current sensor mounting structure according to claim 1, which is characterized in that
Cover board (7) are set on the shell (1).
8. full PCB installing type closed-loop type Hall current sensor mounting structure according to claim 6, it is characterised in that institute
State the slot and buckle being arranged on shell (1) for installing cover board (7).
9. full PCB installing type closed-loop type Hall current sensor mounting structure according to claim 1, it is characterised in that institute
Inner frame (2), outer skeleton (3), shell (1) and cover board (7) is stated to be all made of high-temperature resistance plastice and be molded.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820871307.2U CN208188185U (en) | 2018-06-05 | 2018-06-05 | A kind of full PCB installing type closed-loop type Hall current sensor mounting structure |
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| CN201820871307.2U CN208188185U (en) | 2018-06-05 | 2018-06-05 | A kind of full PCB installing type closed-loop type Hall current sensor mounting structure |
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| CN208188185U true CN208188185U (en) | 2018-12-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535527A (en) * | 2018-06-05 | 2018-09-14 | 南京普肯传感科技有限公司 | A kind of full PCB installing types closed-loop type Hall current sensor mounting structure |
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2018
- 2018-06-05 CN CN201820871307.2U patent/CN208188185U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535527A (en) * | 2018-06-05 | 2018-09-14 | 南京普肯传感科技有限公司 | A kind of full PCB installing types closed-loop type Hall current sensor mounting structure |
| 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 |
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