CN110108922A - A kind of removable open ring type Hall current sensor magnetic circuit circuit mounting structure - Google Patents
A kind of removable open ring type Hall current sensor magnetic circuit circuit mounting structure Download PDFInfo
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- CN110108922A CN110108922A CN201910451866.7A CN201910451866A CN110108922A CN 110108922 A CN110108922 A CN 110108922A CN 201910451866 A CN201910451866 A CN 201910451866A CN 110108922 A CN110108922 A CN 110108922A
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- shell
- lower body
- pcb board
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- 238000009434 installation Methods 0.000 claims abstract description 32
- 238000003466 welding Methods 0.000 claims abstract description 17
- 239000010949 copper Substances 0.000 claims description 51
- 229910052802 copper Inorganic materials 0.000 claims description 51
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 49
- 238000001746 injection moulding Methods 0.000 claims description 9
- 238000004080 punching Methods 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 229910001369 Brass Inorganic materials 0.000 claims description 4
- 229910000906 Bronze Inorganic materials 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 239000010951 brass Substances 0.000 claims description 4
- 239000010974 bronze Substances 0.000 claims description 4
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- 230000006641 stabilisation Effects 0.000 abstract description 4
- 238000011105 stabilization Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 229910000976 Electrical steel Inorganic materials 0.000 description 4
- 238000005476 soldering Methods 0.000 description 4
- 239000002360 explosive Substances 0.000 description 3
- 230000003137 locomotive effect Effects 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010923 batch production Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- AGCPZMJBXSCWQY-UHFFFAOYSA-N 1,1,2,3,4-pentachlorobutane Chemical compound ClCC(Cl)C(Cl)C(Cl)Cl AGCPZMJBXSCWQY-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
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- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
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- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 238000004804 winding Methods 0.000 description 1
Classifications
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention discloses a kind of removable open ring type Hall current sensor magnetic circuit circuit mounting structures, belong to magnetic circuit circuit mounting technique field, pcb board including shell and installation inside the shell, magnetic core, shielded rack, shell upper body is provided with magnetic core installing zone, baffle and upper body elastic-buckle structure, shell lower body is provided with magnetic core installing zone, two Hall element installing zones, pcb board installing zone, magnetic core installing zone is provided with lower body elastic-buckle structure, Hall element installing zone is provided with pcb board installation important actor, Hall element slot and with magnetic core baffle, pcb board installing zone is provided with mounting post and buckle, elastic piece and grounding pin are provided on shielded rack, grounding pin passes through the ground connection welding hole on pcb board and welds ground connection.By magnetic core baffle and elastic-buckle structure that magnetic core is flat-pushing on earth when the present invention installs, magnetic core not welding ground, magnetic core air gap width consistency, temperature stabilization are good, Hall element should not packet insulating tape, pcb board installation is crooked.
Description
Technical field
The present invention relates to a kind of magnetic circuit circuit mounting structures, sense more particularly to a kind of removable open ring type Hall current
Device magnetic circuit circuit mounting structure belongs to magnetic circuit circuit mounting technique field.
Background technique
The magnetic core with air gap and amplifier appropriate is made by Hall element, soft magnetic materials in open ring type Hall current sensor
Circuit composition.The course of work are as follows: the magnetic induction intensity generated in magnetic core air gap with Hall element detection primary current, Hall member
The output voltage of part is amplified to 0-4V or 0-5V through amplifier adjustment and exports.Since the course of work of this current sensor is to open
Formula loop structure is put, therefore is called open ring type Hall current sensor.
Since core-theaded type open ring type Hall current sensor generally uses monoblock type feedthrough hole, for the big electricity of 50 peaces times or more
The measurement of stream, but in some such as power supply equipment, electric locomotive, large ship field, power supply cable is in advance
It installs, it is impossible to dismantle cable, this requires the feedthrough hole of current sensor is detachable structure, just be able to satisfy these and answer
Requirement with field to current sensor mounting structure, and removable punching pore structure in current sensor shell generally all to wear
Feedthrough hole is split as two parts up and down, the two-part installation up and down such as corresponding shell, magnetic core for baseline by core bore center line
Certain difficulty is brought, free section two sides is generally descended to be fixed with copper insert and screw rod on the shell, there are two of same size, right for band
The magnetic core of distributed air gaps or more two parts are claimed to be separately mounted in the corresponding installing zone of shell or more two parts, blend compounds are fixed.
Magnetic induction intensity in removable open ring type Hall current sensor magnetic core is relatively high, for giving sectional area
Magnetic core for, be easy to produce magnetic saturation.It, must in order to improve the linear measurement range of removable open ring type Hall current sensor
The width of air gap that magnetic core must be increased, does so while increasing the leakage field at magnetic core air gap, leads to the anti-of Hall current sensor
The ability of electromagnetic interference declines.In order to improve Hall current sensor electromagnetism interference ability, manufacturer both domestic and external is general
It is all grounded using magnetic core and is wrapped on the outside of magnetic core with copper belt, to being shielded at magnetic core air gap, still, this magnetic core peace
Dress, air-gap screened structure have the following problems:
1, open ring type Hall current sensor generally uses silicon steel sheet coiling process magnetic core, and the surface of silicon steel sheet is all aerobic
Change layer, cannot directly weld, it is necessary to just can be carried out welding, and magnetic core surface area with the oxide layer that grinding wheel grinds off silicon steel sheet surface
Greatly, thermal capacity is big, it is necessary to just can be carried out welding with high-power electric soldering iron, therefore the processing, the welding that are grounded are very time-consuming, increase
Cost of labor, and the production efficiency of Hall current sensor is severely impacted, it can not carry out high-volume automated production.
2, it is wrapped on the outside of magnetic core using copper belt, when to shielding at magnetic core air gap, copper belt twines on the outside of magnetic core
It is not fixed easily around processing；And the magnetic core of copper belt is wound when being installed to shell, and it is also not easy to operate, production effect greatly reduces
Rate, winding copper belt materials are relatively more, and when mass production also increases cost, ring-like Hall current biography laborious and split in this way
Sensor anti-interference ability improves little.
3, when pcb board is installed in the shell, for pin and the magnetic core air gap short circuit for avoiding Hall element, it is necessary to by hand will be every
A Hall element is wrapped with insulating tape, cannot achieve automated production.
4, removable open ring type Hall current sensor, magnetic core installation fixation are extremely not easy, need first to be located in magnetic core
It in plastic shell, and is fixed with casting glue, but encapsulating adhesive curing needs the time, width of air gap consistency is unable to ensure, by shadow
Ring the consistency of the production efficiency and parameter when sensor batch production.
Removable open ring type Hall current sensor, magnetic core shape are generally circular ring shape and rectangular, but in wide temperature
Under range of condition, due to that can not accomplish that the every place's deformation of magnetic core, stress etc. are all consistent when machining, with temperature change, shell
Plastic material used, casting glue and the thermal expansion coefficient of soft magnetic materials can not be consistent, lead to the thermal expansion coefficient of width of air gap
It is not constant constant, so that the output amplitude of removable open ring type Hall current sensor becomes with nonlinear temperature
Change, linear compensation can not be carried out, the temperature stability so as to cause open ring type Hall current sensor is poor, seriously affects open ring type
The measurement accuracy of Hall current sensor.
Summary of the invention
The main object of the present invention is to provide for a kind of removable open ring type Hall current sensor magnetic circuit circuit peace
Assembling structure, by magnetic core baffle and elastic-buckle structure that magnetic core is flat-pushing on earth when the present invention installs, magnetic core not welding ground, magnetic
Core width of air gap consistency, temperature stabilization are good, Hall element should not packet insulating tape, pcb board installation it is not crooked.
The purpose of the present invention can reach by using following technical solution:
A kind of removable open ring type Hall current sensor magnetic circuit circuit mounting structure, including shell and it is mounted on shell
Interior band there are two magnetic core, pcb board and the shielded rack being mounted on pcb board of of same size, symmetrical air gap, shell with
Punching centerline hole is that baseline is divided into removable two parts up and down: shell upper body and shell lower body, shell upper body and shell lower body
Two sides are respectively arranged with copper post and screw rod installing zone and copper insert and screw rod installing zone, respectively with pivot structure and copper post or copper riveting
Nail is fixed with copper insert and stainless steel screw rod；The upper body installing zone, magnetic core baffle and upper body bullet of magnetic core are provided on shell upper body
Property buckle structure；Shell lower body (is above provided with the installation of the lower body installing zone, two Hall element installing zones, pcb board of magnetic core
Area, the lower body installing zone of magnetic core are provided with lower body elastic-buckle structure, and Hall element installing zone is provided with the erecting bed of pcb board
Column, Hall element slot and magnetic core baffle, the installing zone of pcb board are provided with mounting post and buckle；Upper body elastic-buckle structure and
The guide frame of lower body on installation magnetic core is respectively arranged on lower body elastic-buckle structure, lower body two parts are installed respectively on magnetic core
On the shell in the magnetic core installing zone of body and shell lower body；The pin of corresponding Hall element is provided on pcb board, on shielded rack
Grounding pin welding hole, shielded rack are mounted in one side similar in PCB and magnetic core lower body top, elastic piece are provided on shielded rack and is connect
Ground needle, grounding pin passes through corresponding ground hole welding ground connection on pcb board on shielded rack, and elastic piece and magnetic core lower body connect on shielded rack
Ground connection；Hall element pin is mounted on pcb board in corresponding installation welding hole, and Hall element is inserted into the Hall on shell lower body
In element slot, pcb board is mounted in the pcb board installing zone of shell lower body, and with mounting post and buckle installation positioning.
Preferably, it is respectively arranged with what lower body on magnetic core was installed in upper body elastic-buckle structure and lower body elastic-buckle structure
Guide frame, the height of elastic-buckle structure is lower than the height of magnetic core, and when magnetic core is installed, the air gap end face of magnetic core is kept off against magnetic core
Plate is flat-pushing on earth, installs the air gap end face of magnetic core and magnetic core baffle tight fit.
Preferably, shell upper body and the two sides of shell lower body are respectively arranged with copper post and screw rod installing zone and copper insert and spiral shell
Bar installing zone is fixed with pivot structure and copper post or copper rivet on the left of shell, right side shell upper body injection moulding belt through-hole copper insert and
Shell lower body injection moulding belt tapping copper insert is fixed using band spring shim and stainless steel screw rod.
Preferably, the multiple elastic pieces being arranged on shielded rack and two grounding pins, two grounding pins are located at shielded rack
Middle line two sides it is symmetrical, the height of shielded rack is elastic on shielded rack lower than the distance at the top of pcb board bottom surface to magnetic core lower body
Piece and grounding pin are drawn at the top of shielded rack with installation plate face respectively, and the spacing that shielded rack installs plate face is less than the width of core cross section
Degree, elastic piece top are higher by shielding piece top 0.5-0.8mm, are in close contact with the top of magnetic core lower body.
Preferably, it is provided with pcb board installing zone, mounting post and buckle on shell lower body, mounting post and is buckled under shell
Pcb board installing zone is symmetrical in body, and the middle line of body section is in a line under the middle line of buckle, the middle line of shielded rack and magnetic core
On.
Preferably, the shielded rack that shielded rack is processed using the brass or phosphorus bronze sheet cold punching of 0.3-0.5mm, and shield the table of piece
Face is equipped with tin coating.
Preferably, shell upper body and shell lower body select high-temperature resistance plastice material, and integrated injection molding.
Preferably, the shape of feedthrough hole and magnetic core composed by shell upper body and shell lower body can be circular ring shape, rectangular
Or abnormity.
Advantageous effects of the invention:
1, the present invention is divided into removable two parts up and down with shell by baseline of punching centerline hole: under shell upper body and shell
Body, shell upper body are provided with magnetic core upper body installing zone and magnetic core baffle and upper body elastic-buckle structure；Shell lower body is provided with magnetic
Core lower body installing zone, two Hall element installing zones, pcb board installing zone, magnetic core lower body installing zone are provided with lower body Elastic buckle
The guide frame that lower body is installed on magnetic core is respectively arranged in structure, upper body elastic-buckle structure and lower body elastic-buckle structure,
The height of elastic-buckle structure should be slightly less than the height of magnetic core, and shape, thickness of Elastic buckle etc. can be according to the magnetic cores and outer
The shape and size of feedthrough hole are adjusted in shell, arrive the air gap end face of magnetic core against magnetic core baffle is flat-pushing when magnetic core is installed
Bottom struts Elastic buckle, makes the air gap end face of magnetic core and the magnetic core baffle close-fitting under the guide frame effect of Elastic buckle
Close installation.Make removable open ring type Hall current sensor magnetic core installation is fixed to be easy with this structure, magnetic core air gap width one
Cause property is secure, it is ensured that produces open ring type Hall current sensor consistency of performance in enormous quantities.
2, the present invention is respectively arranged with copper post and screw rod installing zone and copper insert with the two sides of shell upper body and shell lower body
And screw rod installing zone, shell left side are fixed with pivot structure and copper post or copper rivet, right side shell upper body injection moulding belt through-hole copper is embedding
Part and shell lower body injection moulding belt tapping copper insert are fixed with band spring shim and stainless steel screw rod, removable open ring type Hall electricity
After shell, the magnetic core of flow sensor are installed, under the conditions of wide temperature range, only the temperature coefficient of casing plastic material is to magnetic core
Air gap temperature coefficient has big influence, and the nearly constant constant of the temperature coefficient of width of air gap can use Linear Temperature on circuit
Degree compensation carries out linear compensation to current sensor amplitude drift, keeps the electrical parameter of removable open ring type Hall current sensor big
Amplitude improves, and makes that the temperature characterisitic of sensor is more stable, measurement lower limit is lower.So that the electric current of open ring type Hall current sensor
Measurement accuracy reaches within 0.5%FS, and zero point, the temperature drift of amplitude reach 50ppm/ DEG C~200ppm/ DEG C, and operation temperature area reaches-
40~105 DEG C, the current measurement precision of open ring type Hall current sensor is greatly increased, has expanded removable open ring type suddenly
The application field of your current sensor.
3, the middle line two sides that the multiple elastic pieces being arranged on shielded rack and two grounding pins are located at shielded rack are symmetrically divided
Cloth, the height of shielded rack are slightly less than the distance at the top of pcb board bottom surface to magnetic core lower body, elastic piece and grounding pin difference on shielded rack
It is drawn at the top of from shielded rack with installation plate face, the spacing of shielded rack installation plate face should be less than the width of core cross section, elastic piece top
End is higher by the shielding piece top 0.5-0.8mm, it is ensured that there are enough deformation spaces, the top with magnetic core lower body in the top of elastic piece
Portion is in close contact, and reliable ground is easy to operate, at low cost, also improves the electromagnetism interference of open ring type Hall current sensor
Ability.
4, by magnetic core baffle and elastic-buckle structure that magnetic core is flat-pushing on earth when present invention installation, magnetic core does not weld ground
Line, magnetic core air gap width consistency, temperature stabilization are good, Hall element should not packet insulating tape, pcb board installation it is not crooked.Big
When batch production, automatic welding is realized with the techniques such as frock clamp appropriate and SMD, wave-soldering, it is real with laser resistor trimming, computer etc.
It now debugs and tests automatically, to realize that automatic streamline produces, increase substantially removable open ring type Hall current sensor
Production efficiency, quality conformance, also reduce production cost, meet in the fields such as power supply equipment, electric locomotive to removable
The requirement of formula open ring type Hall current sensor high quality, high-volume, low price.
Detailed description of the invention
Fig. 1 be removable open ring type Hall current sensor magnetic circuit circuit mounting structure according to the invention one preferably
The overall structure diagram of embodiment；
Fig. 2 be removable open ring type Hall current sensor magnetic circuit circuit mounting structure according to the invention one preferably
Mounting structure explosive view on the shell of embodiment；
Fig. 3 be removable open ring type Hall current sensor magnetic circuit circuit mounting structure according to the invention one preferably
Mounting structure explosive view under the shell of embodiment；
Fig. 4 be removable open ring type Hall current sensor magnetic circuit circuit mounting structure according to the invention one preferably
The shell of embodiment, magnetic core, pcb board mounting structure explosive view.
In figure: 1-PCB plate, 2- shell upper body, 3- shell lower body, 4- magnetic core, the upper body 5- elastic-buckle structure, 6- lower body bullet
Property buckle structure, 7- magnetic core baffle, 8- Hall element slot, 9- buckle, 10- shielded rack, 11- mounting post, 12 Hall elements,
13- copper post and screw rod installing zone, 14- copper insert and screw rod installing zone
Specific embodiment
To make the more clear and clear technical solution of the present invention of those skilled in the art, below with reference to examples and drawings
The present invention is described in further detail, and embodiments of the present invention are not limited thereto.
As Figure 1-Figure 4, removable open ring type Hall current sensor provided in this embodiment is installed with magnetic circuit circuit
Structure, including shell and installation inside the shell band there are two of same size, symmetrical air gap magnetic core 4 and pcb board 1 and
The shielded rack 10 being mounted on pcb board 1, the shape of feedthrough hole and magnetic core is circular ring shape on shell, and feedthrough hole is having a size of diameter
21mm, shell are divided into removable two parts up and down: shell upper body 2 and shell lower body 3, shell upper body by baseline of punching centerline hole
2 and the two sides of shell lower body 3 be respectively arranged with copper post and screw rod installing zone 13 and copper insert and screw rod installing zone 14, respectively to turn
Axle construction and copper post or copper rivet and copper insert and stainless steel screw rod are fixed；Shell upper body 2 be provided with 4 upper body installing zone of magnetic core and
Magnetic core baffle 7 and upper body elastic-buckle structure 5；(3 are provided with 4 lower body installing zone of magnetic core, two Hall element installations to shell lower body
Area, 1 installing zone of pcb board, 4 lower body installing zone of magnetic core are provided with lower body elastic-buckle structure 6, and Hall element installing zone is provided with
Pcb board 1 install important actor, Hall element slot 8 and with magnetic core baffle, 1 installing zone of pcb board be provided with mounting post 11 and buckle 9；On
The guide frame of lower body on installation magnetic core 4, magnetic core 4 are respectively arranged on body elasticity buckle structure 5 and lower body elastic-buckle structure 6
Upper lower body two parts are separately mounted in the magnetic core installing zone of shell upper body 2 and shell lower body 3；It is provided on pcb board 1 corresponding
Grounding pin welding hole on 12 pin of Hall element, shielded rack 10, shielded rack 10 are mounted on one similar in PCB1 and 4 lower body of magnetic core top
On face, elastic piece and grounding pin are provided on shielded rack 10, grounding pin passes through corresponding ground hole on pcb board 1 on shielded rack 10
Welding is grounded, and elastic piece connect ground connection with 4 lower body of magnetic core on shielded rack 10；12 pin of Hall element is mounted on pcb board 1 corresponding
Installation welding hole in, and with the installation of pcb board 1, Hall element 12 is inserted into the Hall element slot 8 on shell lower body 3；
Pcb board 1 is mounted in the pcb board installing zone of shell lower body 3, and with the 9 installation positioning of mounting post 11 and buckle.
In the present embodiment, as Figure 1-Figure 4, distinguish in upper body elastic-buckle structure 5 and lower body elastic-buckle structure 6
It is provided with the guide frame that lower body is installed on magnetic core 4, the height of elastic-buckle structure should be slightly less than the height of magnetic core 4, elastic card
Shape, thickness of button etc. can be adjusted according to the shape and size of feedthrough hole in magnetic core 4 and shell, by magnetic when magnetic core 4 is installed
The air gap end face of core 4 is flat-pushing on earth against magnetic core baffle 7, under the guide frame effect of Elastic buckle, struts Elastic buckle, makes
The air gap end face of magnetic core 4 and 7 tight fit of magnetic core baffle are installed.
In the present embodiment, as Figure 1-Figure 4, shell upper body 2 and the two sides of shell lower body 3 be respectively arranged with copper post and
Screw rod installing zone 13 and copper insert and screw rod installing zone 14, general shell left side are fixed with pivot structure and copper post or copper rivet,
3 injection moulding belt tapping copper insert of 2 injection moulding belt through-hole copper insert of right side shell upper body and shell lower body, with band spring shim and stainless steel
Screw rod is fixed.
In the present embodiment, as Figure 1-Figure 4, the multiple elastic pieces being arranged on shielded rack 10 and two grounding pin difference
Middle line two sides positioned at shielded rack 10 are symmetrical, and the height of shielded rack 10 is slightly less than at the top of 1 bottom surface of pcb board to 4 lower body of magnetic core
Distance, elastic piece and grounding pin are drawn at the top of shielded rack with installation plate face respectively on shielded rack 10,10 mounting plate of shielded rack
The spacing in face should be less than the width in 4 section of magnetic core, and elastic piece top is higher by shielding 10 top 0.5-0.8mm of piece, it is ensured that elastic piece
Top have enough deformation spaces, be in close contact with the top of 4 lower body of magnetic core, reliable ground.
In the present embodiment, as Figure 1-Figure 4, shell lower body 3 is provided with 1 installing zone of pcb board and mounting post 11 and card
Button 9, mounting post 11 and 1 installing zone of pcb board in shell lower body 3 of buckle 9 are symmetrical, buckle 9 middle line and shielded rack 10
The middle line of middle line and the lower body section of magnetic core 4 is substantially on one wire, it is ensured that the elastic piece on shielded rack 10 has maximum deformation, bullet
Property piece top and 4 lower body top of magnetic core have Maximum Contact face, 4 reliable ground of magnetic core.
In the present embodiment, as Figure 1-Figure 4, brass or phosphorus bronze sheet the cold punching processing of the 0.3-0.5mm of shielded rack 10
It forms, and shields the tin plating processing of piece 10, it is ensured that solderability.
In the present embodiment, as Figure 1-Figure 4, shell upper body 2 and shell lower body 3 select existing good toughness to have again
The high-temperature resistance plastice material PCGF15-25 of temperature stability, mold injection form.
In the present embodiment, removable open ring type Hall current sensor provided in this embodiment is installed with magnetic circuit circuit and is tied
Structure, its implementation process are as follows:
Shell or more mould figure, magnetic core figure, shielded rack figure, copper insert figure, pcb board figure are designed by above-mentioned requirements, is used
PCGF15 plastic injection processes shell, processes two with orientation 23ZH85 silicon steel sheet coiling process magnetic core and crossing circle center line
2.1mm air gap processes shielded rack and tin plating with 0.5mm phosphorus bronze sheet, with brass material processing copper insert and nickel plating, is processed with FR4
Pcb board welds the bands such as Hall element, shielded rack and connector with overcurrent frame wave-soldering after chip electronic component SMD processing and draws
Electronic component, the components of foot.
Its assembling process is as follows:
Lower body on shell is integrated dress, fixes left side pivot structure with copper rivet, with band spring shim and stainless steel
The right copper insert in lower body in screw rod fixing shell；Lower body on magnetic core is respectively installed to the magnetic core installing zone of lower body on shell
In, it is the air gap end face of magnetic core is flat-pushing on earth against magnetic core baffle when installation, under the guide frame effect of Elastic buckle, strut
Elastic buckle installs the air gap end face of magnetic core and magnetic core baffle tight fit；By Hall element pair on the good pcb board of welding processing
The Hall element slot of Hall element installing zone in quasi- shell lower body, pcb board is flat-pushing on earth, and pcb board is in mounting post and buckle
Under effect, it is fixed in shell lower body pcb board installing zone.
In conclusion in the present embodiment, according to the removable open ring type Hall current sensor magnetic circuit of the present embodiment
Circuit mounting structure, by magnetic core baffle and elastic-buckle structure that magnetic core is flat-pushing on earth when the present invention installs, magnetic core does not weld
Ground wire, magnetic core air gap width consistency, temperature stabilization are good, Hall element should not packet insulating tape, pcb board installation it is not crooked, use
SMD, wave-soldering, laser resistor trimming, computer are tested etc. automatically completes automatic streamline production, meets power supply equipment, electric locomotive
Requirement in equal fields to removable open ring type Hall current sensor high quality, high-volume, low price.
The above, further embodiment only of the present invention, but scope of protection of the present invention is not limited thereto, and it is any
Within the scope of the present disclosure, according to the technique and scheme of the present invention and its design adds those familiar with the art
With equivalent substitution or change, protection scope of the present invention is belonged to.
Claims (8)
1. a kind of removable open ring type Hall current sensor magnetic circuit circuit mounting structure, including shell and installation are inside the shell
Band there are two of same size, symmetrical air gap magnetic core (4), pcb board (1) and the shielded rack being mounted on pcb board (1)
(10), which is characterized in that shell is divided into removable two parts up and down: shell upper body (2) and shell by baseline of punching centerline hole
The two sides of lower body (3), shell upper body (2) and shell lower body (3) are respectively arranged with copper post and screw rod installing zone (13) and copper insert
And screw rod installing zone (14), it is fixed respectively with pivot structure and copper post or copper rivet with copper insert and stainless steel screw rod；On shell
The upper body installing zone, magnetic core baffle (7) and upper body elastic-buckle structure (5) of magnetic core (4) are provided on body (2)；Shell lower body (3)
On be provided with the installing zone of the lower body installing zone of magnetic core (4), two Hall element installing zones, pcb board (1), the lower body of magnetic core (4)
Installing zone is provided with lower body elastic-buckle structure (6), and Hall element installing zone is provided with the installation important actor of pcb board (1), Hall member
Part slot (8) and magnetic core baffle (7), the installing zone of pcb board (1) are provided with mounting post (11) and buckle (9)；Upper body Elastic buckle
The guide frame of lower body in installation magnetic core (4) is respectively arranged in structure (5) and lower body elastic-buckle structure (6), on magnetic core (4)
Lower body two parts are separately mounted in the magnetic core installing zone of shell upper body (2) and shell lower body (3)；It is provided on pcb board (1) pair
Grounding pin welding hole on the pin of the Hall element (12) answered, shielded rack (10), shielded rack (10) are mounted on PCB (1) and magnetic core (4)
In one side similar at the top of lower body, elastic piece and grounding pin are provided on shielded rack (10), grounding pin passes through on shielded rack (10)
Corresponding ground hole welding is grounded on pcb board (1), and elastic piece connect ground connection with magnetic core (4) lower body on shielded rack (10)；Hall member
Part (12) pin is mounted on pcb board (1) in corresponding installation welding hole, and Hall element (12) is inserted on shell lower body (3) suddenly
In your element slot (8), pcb board (1) is mounted in the pcb board installing zone of shell lower body (3), and with mounting post (11) and buckle
(9) installation positioning.
2. a kind of removable open ring type Hall current sensor magnetic circuit circuit mounting structure according to claim 1,
It is characterized in that, lower body on magnetic core (4) is respectively arranged in upper body elastic-buckle structure (5) and lower body elastic-buckle structure (6) and is pacified
The guide frame of dress, the height of elastic-buckle structure is lower than the height of magnetic core (4), when magnetic core (4) is installed, the air gap of magnetic core (4)
End face is flat-pushing on earth against magnetic core baffle (7), installs the air gap end face of magnetic core (4) and magnetic core baffle (7) tight fit.
3. a kind of removable open ring type Hall current sensor magnetic circuit circuit mounting structure according to claim 1,
It is characterized in that, the two sides of shell upper body (2) and shell lower body (3) are respectively arranged with copper post and screw rod installing zone (13) and copper insert
And screw rod installing zone (14), shell left side are fixed with pivot structure and copper post or copper rivet, right side shell upper body (2) is molded band logical
Hole copper insert and shell lower body (3) injection moulding belt tapping copper insert are fixed using band spring shim and stainless steel screw rod.
4. a kind of removable open ring type Hall current sensor magnetic circuit circuit mounting structure according to claim 1,
It is characterized in that, the multiple elastic pieces and two grounding pins being arranged on shielded rack (10), two grounding pins are located at shielded rack
(10) middle line two sides are symmetrical, the height of shielded rack (10) lower than at the top of pcb board (1) bottom surface to magnetic core (4) lower body away from
From elastic piece and grounding pin are drawn at the top of shielded rack with installation plate face respectively on shielded rack (10), shielded rack (10) mounting plate
The spacing in face is less than the width in magnetic core (4) section, and elastic piece top is higher by shielding piece (10) top 0.5-0.8mm, with magnetic core (4)
The top of lower body is in close contact.
5. a kind of removable open ring type Hall current sensor magnetic circuit circuit mounting structure according to claim 1,
It is characterized in that, pcb board (1) installing zone, mounting post (11) and buckle (9), mounting post (11) and card is provided on shell lower body (3)
Button (9) pcb board (1) installing zone in shell lower body (3) is symmetrical, buckles the middle line of (9), the middle line and magnetic of shielded rack (10)
The middle line of body section is on one wire under core (4).
6. a kind of removable open ring type Hall current sensor magnetic circuit circuit mounting structure according to claim 1,
It is characterized in that, the shielded rack that shielded rack (10) is processed using the brass or phosphorus bronze sheet cold punching of 0.3-0.5mm, and shields piece (10)
Surface is equipped with tin coating.
7. a kind of removable open ring type Hall current sensor magnetic circuit circuit mounting structure according to claim 1,
It is characterized in that, shell upper body (2) and shell lower body (3) select high-temperature resistance plastice material, and integrated injection molding.
8. a kind of removable open ring type Hall current sensor magnetic circuit circuit mounting structure according to claim 1,
It is characterized in that, the shape of feedthrough hole composed by shell upper body (2) and shell lower body (3) and magnetic core (4) can be circular ring shape, side
Shape or abnormity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910451866.7A CN110108922B (en) | 2019-05-28 | 2019-05-28 | Magnetic circuit mounting structure for detachable open-loop Hall current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910451866.7A CN110108922B (en) | 2019-05-28 | 2019-05-28 | Magnetic circuit mounting structure for detachable open-loop Hall current sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110108922A true CN110108922A (en) | 2019-08-09 |
| CN110108922B CN110108922B (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910451866.7A Active CN110108922B (en) | 2019-05-28 | 2019-05-28 | Magnetic circuit mounting structure for detachable open-loop Hall current sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858758A (en) * | 2021-03-03 | 2021-05-28 | 南京托肯电子科技有限公司 | Detachable mounting structure for open-loop large-current sensor |
| CN118169437A (en) * | 2024-05-15 | 2024-06-11 | 西昌学院 | Current sensor for new energy automobile |
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| Publication number | Publication date |
|---|---|
| CN110108922B (en) | 2024-02-23 |
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