CN105675950B - A kind of closed-loop Hall current sensor - Google Patents
A kind of closed-loop Hall current sensor Download PDFInfo
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- CN105675950B CN105675950B CN201511032489.1A CN201511032489A CN105675950B CN 105675950 B CN105675950 B CN 105675950B CN 201511032489 A CN201511032489 A CN 201511032489A CN 105675950 B CN105675950 B CN 105675950B
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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
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- 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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- Measuring Magnetic Variables (AREA)
Abstract
The invention discloses a kind of closed-loop Hall current sensors, including magnetism gathering rings, secondary coil, Hall element, skeleton, circuit board, cover board and shell, the shell, secondary coil, Hall element, skeleton, circuit board, cover board respectively includes discrete two parts, the magnetism gathering rings include mutually isolated the first magnetism gathering rings and the second magnetism gathering rings, first magnetism gathering rings and the second magnetism gathering rings are made of the mutually seamless engagement of two discrete magnetic cores respectively, discrete magnetic core is respectively arranged in each section shell, secondary coil, Hall element, skeleton, circuit board section, described two discrete shells, which are engaged togather, forms a Hall current sensor, magnetic core in described two discrete shells is in the seamless engagement of shell joining place；The discrete cover board covers conjunction on described two discrete shells respectively；The separate structure of the shell makes the closure Hall current sensor that can be separated into two independent parts, easy for installation, improves current detection accuracy.
Description
Technical field
The present invention relates to current sensors, more particularly to a kind of openable and closable closed-loop Hall current sensor.
Background technique
Sensor is a kind of detection device, can detect the relevant information of tested equipment, be for conversion into electricity according to certain rules
The output of the information of signal or other required forms, is wanted with transmission, processing, storage, display, record and the control etc. that meet information
It asks.Sensor application range is very extensive, provides a kind of technical support of indispensability for instrumentation devices.Hall current sensor
It is that a kind of pair of primary current developed using Hall effect principle carries out the current measuring element of isolation detection, primary current produces
As collected by magnetism gathering rings, the Hall element being placed in magnetism gathering rings is acquired the magnetic field in raw magnetic field, generates one and primary side
The Hall voltage of magnetic field equal proportion, by the size for measuring the Hall voltage, so that it may realize the isolation detection to primary current.
Existing Hall current sensor has open loop and two kinds of closed loop.Open loop Hall current sensor simple process, cost
Low, mounting means diversification, tested electric current is larger, easy to produce and application, but detection accuracy is dry by external environment and temperature etc.
Being affected for factor is disturbed, stability is bad, and working frequency can only accomplish 50kHz hereinafter, some high frequency environments and interference source ratio
It can not normal use under more environment.Closed-loop Hall current sensor precision is high, and strong interference immunity, stability is good, work frequency
Rate can reach 200kHz, but since the particularity of its principle, mounting means have limitation, be generally divided into whole through-hole installation and
PCB installs two kinds of forms, is not easy to user flexibility application, is inconvenient to not pacify under the special occasions disassembled in busbar overcurrent cable
Dress uses.
Therefore, a kind of to facilitate installation and the high current sensor of measurement accuracy is a problem to be solved.
Summary of the invention
The object of the invention is exactly to solve to install closed-loop Hall current sensor in the case where not disassembling busbar cable
Problem.
Technical problem of the invention is resolved by technical solution below:
A kind of closed-loop Hall current sensor, including magnetism gathering rings, secondary coil, Hall element, skeleton, circuit board, cover board
And shell, the magnetism gathering rings include two mutually isolated the first magnetism gathering rings and the second magnetism gathering rings, the skeleton is double-layer structure,
The skeleton is arranged on first magnetism gathering rings and the second magnetism gathering rings, has air gap, the Hall element on the magnetism gathering rings
It is arranged in the gap position, the secondary coil is looped around on the skeleton, the circuit board and the Hall element, institute
State secondary coil electrical connection；The magnetism gathering rings, the secondary coil, the Hall element, the skeleton, circuit board setting
In the shell；The shell, the cover board respectively include discrete two parts, the shell by discrete the first shell and
Second housing is engaged togather to form entirety；First magnetism gathering rings and the second magnetism gathering rings respectively include discrete two parts magnetic
Core, the first magnetic core of first magnetism gathering rings and the third magnetic core of the second magnetism gathering rings are arranged in simultaneously in first shell, institute
4th magnetic core of the second magnetic core and the second magnetism gathering rings of stating the first magnetism gathering rings is arranged in simultaneously in the second housing, and described first
The joining place seamless engage of the magnetic core with second magnetic core in the shell constitutes first magnetism gathering rings, the third magnetic
The joining place seamless engage of the core with the 4th magnetic core in the shell constitutes second magnetism gathering rings；The discrete lid
Plate covers conjunction on first shell and the second housing respectively.
Another specific aspect according to the present invention, the secondary coil, the skeleton, the circuit board respectively include point
The secondary coil, skeleton, described is also respectively provided in vertical two parts, first shell and the second housing
A part of circuit board.
Another specific aspect according to the present invention, first shell and the second housing are respectively in the joining place
Rank face on seam is set, the second magnetic core in the first magnetic core in first shell and second housing is in the seam
Locate seamless engagement, the third magnetic core in first shell with the 4th magnetic core in second housing is seamless at the seam nibbles
It closes, the first circuit board in first shell is electrically connected with the second circuit board in second housing in the joining place.
Another specific aspect according to the present invention, in the first circuit board and the second housing in first shell
Second circuit board the joining place pass through connector be electrically connected.
Another specific aspect according to the present invention, first magnetic core and second magnetic core are in the seamless engagement place
For mutually matched dentalation, the third magnetic core is mutually matched tooth in the seamless engagement place with the 4th magnetic core
Shape structure.
Another specific aspect according to the present invention, first magnetic core to the 4th magnetic core are to stack riveted with sheet
It forms, forms dentalation in the seamless engagement place.
Another specific aspect according to the present invention, the shell be it is hollow rectangular or round, corresponding described first
Shell and the second housing are described rectangular or circular a part, first magnetic core to the 4th magnetic core be with it is described
Rectangular or round corresponding rectangular or circular a part.
Another specific aspect according to the present invention, be provided on the skeleton Hall element insertion hole or/and
The locating slot of the air gap.
The joining place setting of another specific aspect according to the present invention, first shell and the second housing is useful
In the positioning device for realizing the shell seamless linking.
The two ends of another specific aspect according to the present invention, the Hall element and the primary coil are welded on institute
It states on circuit board, leading foot is arranged by connector or cable mode in the circuit board.
It is respectively arranged on another specific aspect according to the present invention, first magnetism gathering rings and second magnetism gathering rings
N number of air gap, the air gap are symmetric on magnetism gathering rings, wherein N >=1.
The air gap on another specific aspect according to the present invention, first magnetism gathering rings and second magnetism gathering rings
The direction of the leading foot of the Hall element at place is mutually perpendicular to.
Another specific aspect according to the present invention, the direction of the leading foot of the Hall element are parallel with the circuit board
When, the Hall element is electrically connected on the circuit board by Hall element pinboard.
Another specific aspect according to the present invention, the magnetism gathering rings be it is rectangular or round, the corresponding magnetic core is half
It is rectangular or semicircle.
The beneficial effect of the present invention compared with the prior art is:
Closed-loop Hall current sensor of the invention, changing all structural members in existing closed-loop Hall current sensor needs
The frame mode being fixedly connected, using flexible retractable structure, casing assembly is divided into two, unilateral formation one independence
Body realizes both sides seamless interfacing by the positioning column and thread of bilateral junction, without disassembling overcurrent busbar when application, very
It is convenient.
Present invention incorporates the good characteristic of the installation convenience of product retractable in open-loop principles and closed loop principle product,
Simple and direct and precision promotion when application is realized, had not only been able to satisfy the sampling precision of product, but also installation and the tune of product can be facilitated
Examination, so that the application limitation of closed loop principle product gets a promotion.
Detailed description of the invention
Fig. 1, Fig. 1 a are the structural schematic diagrams of the specific embodiment of the invention one；
Fig. 2, Fig. 2 a are the structural schematic diagrams of the specific embodiment of the invention two；
Fig. 3, Fig. 3 a are the structural schematic diagrams of the specific embodiment of the invention three；
Fig. 4 is the structural schematic diagram of the specific embodiment of the invention four；
Fig. 5 is the structural schematic diagram of the specific embodiment of the invention five；
Fig. 6 is the structural schematic diagram of the specific embodiment of the invention six；
Fig. 7, Fig. 8 are the structural schematic diagrams of the specific embodiment of the invention seven；
Fig. 9 is the structural schematic diagram of the specific embodiment of the invention eight；
Figure 10, Figure 10 a are the structural schematic diagrams of the specific embodiment of the invention nine.
Specific embodiment
Specific embodiment one
A kind of closed-loop Hall current sensor 10 is as shown in Fig. 1, Fig. 1 a, including magnetism gathering rings, secondary coil 3, Hall element 4
With circuit controller 5, the magnetism gathering rings include two discrete magnetic cores 1 and magnetic core 2, and magnetic core 1 and magnetic core 2 are respectively provided with two ends
Head, each end are designed as dentalation, and the dentalation of 1 end point of magnetic core is matched with the dentalation of 2 end point of magnetic core,
As shown in Figure 1a, magnetic core 1 engages the magnetism gathering rings for being formed and being closed with mutually seamless at 2 two ends of magnetic core, and magnetic core 1 and magnetic core 2 are distinguished
For a part of magnetism gathering rings, there is air gap on magnetic core 2, be not provided with air gap on magnetic core 1, the gas on magnetic core 2 is arranged in Hall element 4
Gap position, secondary coil 3 are looped around on magnetic core 2, and circuit controller 5 is electrically connected with the secondary coil 3, the Hall element 4,
And the collected signal of Hall element is handled；Wherein Fig. 1 a is the side view of magnetism gathering rings structure in Fig. 1.
The end portion that magnetic core 1 is meshed with magnetic core 2 is also possible to the distressed structure of dentalation, or can mutual nothing
Stitch any one curved-surface structure combined.
When needing to detect the current strength of tested cable, magnetic core 1 and magnetic core 2 are separated, from the two sides of tested cable point
Be not put into magnetic core 1 and magnetic core 2, magnetic core 1 with the dentate part of magnetic core 2 is mutually seamless engages, magnetic core 1 is closed with the composition of magnetic core 2 at this time
The magnetism gathering rings of conjunction, magnetism gathering rings, secondary coil 3, Hall element 4 and circuit controller 5 form closed-loop Hall current sensor.
Magnetic core 1 is closed with magnetic core 2 by high magnetic conduction sheet material pile tinertoy, when stacking riveted, in magnetic core 1 and magnetic core 2
Two ends stack to form dentalation, the dentation of the corresponding tip position of two magnetic cores is seamless engagement formed closure magnetism gathering rings.
The middle position of magnetic core 2 is arranged in air gap on magnetic core 2, or any position of magnetic core 2 is arranged in.
Magnetic core 1 and magnetic core 2 may respectively be half of rectangular or half of circular configuration, and two magnetic cores form hollow rectangular after combining
Or round magnetism gathering rings.
Magnetic core 1 be square hollow or circular sub-fraction, magnetic core 2 be square hollow or it is circular most, two magnetic
Core can also equally form rectangular or circular configuration magnetism gathering rings after combining.
The centre that magnetism gathering rings are also possible to an arbitrary structures is provided with the closed shape of through-hole, and magnetic core 1 and magnetic core 2 are these
The component part of closed shape.
Specific embodiment two
A kind of closed-loop Hall current sensor 20 is as shown in Fig. 2, Fig. 2 a, including magnetism gathering rings, secondary coil 3 and 7, Hall member
Part 4 and 6 and circuit controller 5, the magnetism gathering rings include two discrete magnetic cores 1 and magnetic core 2, and magnetic core 1 and magnetic core 2 are distinguished
For tool there are two end, each end is designed as dentalation, the dentalation of 1 end point of magnetic core and the dentation of 2 end point of magnetic core
Structure matches, and as shown in Figure 2 a, mutually seamless engagement forms the magnetism gathering rings of closure at two ends, and magnetic core 1 is respectively with magnetic core 2
Air gap is respectively provided on a part of magnetism gathering rings, magnetic core 1 and magnetic core 2；The gap position on magnetic core 2 is arranged in Hall element 4, secondary
Grade coil 3 is looped around on magnetic core 2；The gap position on magnetic core 1 is arranged in Hall element 6, and secondary coil 7 is looped around on magnetic core 1,
Hall element 4 is symmetrical on magnetism gathering rings with Hall element 6, circuit controller 5 respectively with the secondary coil 3 and 7, described
Hall element 4 and 6 is electrically connected, and is handled the collected signal of Hall element；Secondary coil 7 and Hall element 6 are by connecing
Plug-in unit 8 is connected to circuit controller 5 after being electrically connected with secondary coil 3, wherein Fig. 2 a is the side view of magnetism gathering rings structure in Fig. 2
Figure.
Alternatively, the end portion that magnetic core 1 is meshed with magnetic core 2 is the distressed structure of dentalation, or can mutual nothing
Stitch any one curved-surface structure combined.
When needing to detect the current strength of tested cable, magnetic core 1 and magnetic core 2 are separated, from the two sides of tested cable point
Be not put into magnetic core 1 and magnetic core 2, magnetic core 1 with the dentate part of the end of magnetic core 2 is mutually seamless engages, magnetic core 1 and magnetic core 2 at this time
The magnetism gathering rings of closure are constituted, magnetism gathering rings, secondary coil 3 and 7, Hall element 4 and 6 and circuit controller 5 form the double Halls of closed loop
Current sensor.
The middle position of magnetic core 1 Yu magnetic core 2 is arranged in air gap on magnetic core 1 and magnetic core 2, or is arranged in magnetic core 1 and magnetic core 2
Any position, air gap is symmetrical on magnetism gathering rings.
Magnetic core 1 can be set to N number of with the air gap on magnetic core 2, and the air gap on magnetism gathering rings is exactly 2N, 2N air gap pair at this time
Title is distributed on magnetism gathering rings, wherein N >=1；The quantity of Hall element is equal to air gap number.
Magnetic core 1 and magnetic core 2 may respectively be half of rectangular or half of circular configuration, and two magnetic cores form hollow rectangular after combining
Or round magnetism gathering rings.
Magnetic core 1 is rectangular or circular sub-fraction, magnetic core 2 be it is rectangular or it is circular most, after two magnetic cores combine
Form hollow rectangular or round magnetism gathering rings.
The centre that magnetism gathering rings are also possible to an arbitrary structures is provided with the closed shape of through-hole, and magnetic core 1 and magnetic core 2 are these
Two component parts of closed shape.
Specific embodiment three
A kind of closed-loop Hall current sensor 30 is as shown in Fig. 3, Fig. 3 a, including magnetism gathering rings, secondary coil 3 and 7, Hall member
Part 4 and 6 and circuit controller 5, the magnetism gathering rings include mutually isolated the first magnetism gathering rings and the second magnetism gathering rings, and described
One magnetism gathering rings include two discrete magnetic cores 101 and magnetic core 102, and magnetic core 101 and magnetic core 102 are respectively provided with two ends, each
End point is dentalation, and the dentalation of 101 end point of magnetic core is matched with the dentalation of 102 end point of magnetic core, both ends
Mutually seamless engagement forms the first magnetism gathering rings of closure at head, has air gap on the first magnetism gathering rings；Second magnetism gathering rings include
Two discrete magnetic cores 201 and magnetic core 202, magnetic core 201 and magnetic core 202 are respectively provided with two ends, and each end point is dentation
The dentalation of structure, 201 end point of magnetic core is matched with the dentalation of 202 end point of magnetic core, mutually seamless at two ends
Engagement forms the second magnetism gathering rings of closure, has air gap on the second magnetism gathering rings, as shown in Figure 3a；Hall element 4 is arranged second
Gap position on the magnetic core 202 of magnetism gathering rings, secondary coil 3 are looped around simultaneously on magnetic core 102 and magnetic core 202；Hall element 6 is set
The gap position on the magnetic core 101 of the first magnetism gathering rings is set, secondary coil 7 is looped around simultaneously on magnetic core 101 and magnetic core 201, suddenly
Your element 4 and Hall element 6 are symmetrical on magnetism gathering rings, circuit controller 5 respectively with the secondary coil 3 and 7, it is described suddenly
You are electrically connected element 4 and 6, handle the collected signal of Hall element；Secondary coil 7 and Hall element 6 are by patching
Part 8 is connected to circuit controller 5 after being electrically connected with secondary coil 3, wherein Fig. 3 a is the side view of magnetism gathering rings structure in Fig. 3.
Alternatively, the end head that end portion, magnetic core 201 that magnetic core 101 is meshed with magnetic core 102 are meshed with magnetic core 202
Point be the distressed structure of dentalation, or can mutual seamless combination any one curved-surface structure.
When needing to detect the current strength of tested cable, magnetic core 101,201 is opened with 102,202 points of magnetic core, from being tested
The two sides of cable are respectively put into magnetic core 101,201 and magnetic core 102,202, the tooth-like part split-phase of magnetic core 101 and the end of magnetic core 102
Mutual seamless engagement, magnetic core 201 with the dentate part of the end of magnetic core 202 is mutually seamless engages, magnetic core 101 and the composition of magnetic core 102
First magnetism gathering rings of closure, magnetic core 201 and magnetic core 202 constitute the second magnetism gathering rings of closure, magnetism gathering rings, secondary coil 3 and 7, suddenly
That element 4 and 6 and circuit controller 5 form bicyclic double Hall closed-loop current sensors.
The middle position of magnetic core 101 Yu magnetic core 202 is arranged in air gap on magnetic core 101 and magnetic core 202, or is arranged in magnetic
Any position of core 101 and magnetic core 202, or any position of magnetic core 102 Yu magnetic core 201 is set, air gap is on magnetism gathering rings
It is symmetrical.
Air gap number on magnetism gathering rings is 2N, and 2N air gap is symmetrically distributed on magnetism gathering rings, wherein N >=1；Each magnetism gathering rings
The upper N number of air gap of distribution, the quantity of Hall element are equal to air gap number.
Specific embodiment four
A kind of closed-loop Hall current sensor 40 is as shown in figure 4, closed-loop Hall current sensor 40 is that a kind of monocycle is double suddenly
Your closed-loop current sensors, including shell, magnetism gathering rings, circuit board, skeleton, secondary coil, cover board；The shell includes shell
1 and 2 two parts of shell, the magnetism gathering rings include 9 two parts of magnetic core 4 and magnetic core, the circuit board includes circuit board 11 and circuit
Plate 12, the skeleton include skeleton 6 and skeleton 7, and the secondary coil includes secondary coil 3 and secondary coil 5, the cover board packet
Include cover board 13 and cover board 14.
Magnetic core 9, skeleton 6, secondary coil 3, circuit board 12 are provided in shell 1, secondary coil 3 is looped around on skeleton 6, bone
Frame 6 is mounted on magnetic core 9, and Hall element 10 is provided on circuit board 12, and the lid of cover board 14 closes on shell 1；It is provided in shell 2
Magnetic core 4, skeleton 7, secondary coil 5, circuit board 11, secondary coil 5 are looped around on skeleton 7, and skeleton 7 is mounted on magnetic core 4, circuit
Be provided with Hall element 8 on plate 11, the lid of cover board 13 closes on shell 2, in Fig. 4 in order to illustrate needs, by magnetic core 4, skeleton 7,
Secondary coil 5 is separately drawn, and the result after magnetic core 9, skeleton 6, secondary coil 3 are installed illustrates.
Corresponding position on skeleton 6 and secondary coil 3 is provided with Hall element location hole 19, the Hall on electrode plate 12
Element 10 is mounted in location hole 19；Determine likewise, the corresponding position on skeleton 7 and secondary coil 5 is provided with Hall element
Position hole 20, the Hall element 8 on electrode plate 11 are mounted in location hole 20.
Shell is square hollow structure, and shell 1 and shell 2 are a part of the square hollow structure, in this reality
Apply shell 1 and shell 2 in example be it is symmetrical, but not limited to this；Shell 1 and 2 seamless connection of shell, in shell 1 and shell 2
The interface of joining place is equipped with seam, as shown in 2 seam 21 of shell, equally in two interfaces of shell 1 and shell 2
Another interface on also be provided with seam, be not drawn into Fig. 1；It is additionally provided with fixation hole in the joining place of shell 1 and shell 2,
The fixation hole 15 of shell 1 as shown in Figure 1, the fixation hole 16 of shell 2, the quantity of fixation hole and position are set as needed, unlimited
In two fixation holes.
Magnetism gathering rings are square hollow structure similar with shell, and magnetic core 4 and magnetic core 9 are respectively the square hollow structure
A part, magnetic core 4 and magnetic core 9 are the half of the square hollow structure respectively in the present embodiment, and magnetic core 4 and magnetic core 9 are distinguished
For tool there are two end, the structure of each end point is dentalation, the dentalation of an end point of magnetic core 4 and 9 one end of magnetic core
Dentalation at head cooperates and seamless engagement, the dentalation of another end point of magnetic core 4 and another end point of magnetic core 9
Dentalation cooperate and seamless engagement, magnetic core 4 and the seamless position engaged of magnetic core 9 are located at being connected for shell 1 and shell 2
At mouthful；Air gap is provided on magnetic core 4, position is corresponding with the location hole 20 on skeleton 7；It is provided with air gap on magnetic core 9,
Position is corresponding with the location hole 19 on skeleton 6, and the air gap is symmetric on magnetism gathering rings, corresponding with gap position
Location hole 20 is symmetric on magnetism gathering rings with location hole 19, and air gap described in the present embodiment is separately positioned on magnetic core 4,9
Middle position, but not limited to this.
Circuit board 12 and circuit board 11 are respectively a part of the square hollow structure similar with magnetic core 9 with magnetic core 4,
Hall element 10, connector 17 and related circuit are provided on circuit board 12, the end position of circuit board 12 is arranged in connector 17
It sets, the welding of the two ends of secondary coil 3 on the circuit board 12, is provided with Hall element 8, connector 18 and corresponding on circuit board 11
The tip position of circuit board 11 is arranged in circuit, connector 18, and the two ends of secondary coil 5 are welded on circuit board 11；Hall
The position of element 8 is corresponding with the location hole 20 on skeleton 7, and the position of Hall element 10 is opposite with the location hole 19 on skeleton 6
It answers；Connector 17 and connector 18 match, electrical connection circuit plate 12 and circuit board 11 in shell installation；Circuit board 11,12
By connector or cable mode, leading foot is set.
Alternatively, shell is hollow circular configuration or hollow any cyclic structure.
Specific embodiment five
A kind of closed-loop Hall current sensor 50 as shown in figure 5, closed-loop Hall current sensor 50 be a kind of monocycle list suddenly
Your closed-loop current sensors the difference is that, are only arranged one with closed-loop Hall current sensor 40 on magnetic core 4
Air gap, and air gap is not provided on magnetic core 9, it is also not provided with skeleton and secondary coil on corresponding magnetic core 9, is not also set in shell 1
Circuits plate, that is, only one air gap, circuit board, skeleton and secondary coil.
The closed-loop current sensors of above monocycle list Hall include monoskeleton, single secondary coil, single circuit plate.
Alternatively, as needed, the closed-loop current sensors of monocycle list Hall can also be set respectively on magnetic core 4 and magnetic core 9
Skeleton and secondary coil are set, circuit board is respectively set in shell 1 and shell 2.
Specific embodiment six
One of frame mode of magnetism gathering rings 60 is as shown in fig. 6, the square hollow that magnetism gathering rings 60 are made of magnetic core 4 and magnetic core 9
Structure, magnetic core 4 and magnetic core 9 are respectively a portion of square hollow structure, and there are two ends 23,25, Mei Geduan for the tool of magnetic core 4
It is dentalation at head, air gap 27 is set in the middle position of magnetic core 4, there are two end 24,26, each end points for the tool of magnetic core 9
For dentalation, air gap 28 is set in the middle position of magnetic core 9, the dentalation of end 23 and the dentalation of end 24 match
It closing, the dentalation of end 25 is matched with the dentalation of end 26, when magnetic core 4 is connected with magnetic core 9, the dentation of end 23
The dentalation seamless connection of structure and end 24, the dentalation of end 25 and the dentalation seamless connection of end 26, magnetic
Core 4 and 9 seamless connection of magnetic core are magnetism gathering rings 60.
Alternatively, the air gap number of magnetism gathering rings is one, it is disposed therein on a magnetic core；Or the air gap number of magnetism gathering rings is 2
Integral multiple, be separately positioned on two magnetic cores, at this point, the air gap of magnetism gathering rings is symmetric on magnetism gathering rings.
Specific embodiment seven
A kind of external structure of closed-loop Hall current sensor is as shown in Figure 7, Figure 8, and Fig. 7 is closed-loop Hall current sensor
Structure 70 when folding, the structure 80 when Fig. 8 is closed-loop Hall current sensor closure, closed-loop Hall current sensor includes point
Vertical 1 component of shell and 2 component of shell is at shell 1 and shell 2 form square hollow structure, 2 component of 1 component of shell and shell
Respectively include shell, magnetic core, circuit board, skeleton, secondary coil, cover board, the dentation knot of the end point of the magnetic core in 1 component of shell
Structure 23,25 protrudes from the seam of 1 joining place of shell, and the dentalation 24,26 of the end point of the magnetic core in 2 component of shell protrudes
In the seam of 2 joining place of shell, 1 component of shell and 2 component of shell are realized by the location hole 15,16 and 27,28 of joining place
Seamless connection, dentalation 23,24 and 25,26 also realize seamless connection at seam.
Specific embodiment eight
A kind of closed-loop Hall current sensor 90 as shown in figure 9, closed-loop Hall current sensor 90 be it is a kind of it is bicyclic it is double suddenly
Your closed-loop current sensors, including shell, magnetism gathering rings, circuit board, skeleton, secondary coil, cover board；The shell includes shell
17 and 18 two parts of shell, the magnetism gathering rings include the first magnetism gathering rings and the second magnetism gathering rings, and first magnetism gathering rings include magnetic core
1a and magnetic core 1b two parts, second magnetism gathering rings include magnetic core 2a and magnetic core 2b two parts, and the circuit board includes circuit board
21 and circuit board 22, the skeleton includes skeleton 19 and skeleton 20, and the secondary coil includes secondary coil 3 and secondary coil 7,
The cover board includes 24 two parts of cover board 23 and cover board.
Magnetic core 1a and 2a, skeleton 19, secondary coil 7, circuit board 21 are provided in shell 17, secondary coil 7 is looped around bone
On frame 19, skeleton 19 is mounted on magnetic core 1a and 2a, and the insertion hole of Hall element is provided at the air gap of skeleton 19, is inserted described
Enter to be provided with Hall element 6 at hole, connector 8a is provided in the tip position of circuit board 21, the lid of cover board 23 closes on shell 1；
Magnetic core 1b and 2b, skeleton 20, secondary coil 3, circuit board 22 are provided in shell 18, secondary coil 3 is looped around on skeleton 20, bone
Frame 7 is mounted on magnetic core 1b and 2b, and the insertion hole of Hall element is provided at the air gap of skeleton 20, is arranged at the insertion hole
Have Hall element 4, be provided with connector 8b in 21 tip position of circuit board, the lid of cover board 24 closes on shell 18, connector 8a with
8b cooperates and electrical connection circuit plate 21 and 22；In Fig. 9 in order to illustrate needs, by magnetic core 1b and 2b, skeleton 20, secondary wire
Circle 3 is separately drawn, and the result after magnetic core 1a and 2a, skeleton 19 are installed illustrates.
Air gap is provided on the first magnetism gathering rings, position is corresponding with the insertion hole of Hall element on skeleton 19；The
Air gap is provided on two magnetism gathering rings, position is corresponding with the insertion hole of Hall element on skeleton 20, the first magnetism gathering rings and
Gap position on two magnetism gathering rings is symmetric in magnetism gathering rings.Hall element 6 is placed at the air gap of the first magnetism gathering rings, Hall
Element 4 is placed at the air gap of the second magnetism gathering rings, and Hall element 6 and the leading foot direction of Hall element 4 are mutually perpendicular to, skeleton
19, it is additionally provided with the locating slot of the air gap on 20, is not drawn into figure.
Shell is hollow square structure, and shell 17 and shell 18 are a part of square hollow structure, in the present embodiment
Middle shell 17 with shell 18 be it is symmetrical, but not limited to this；Shell 17 and 18 seamless connection of shell, in shell 17 and shell
The interface of 18 joining places is equipped with seam, and the interface of 18 joining place of shell is equipped with seam 25,26, and shell 17 is in phase
The position answered also is provided with seam, is not drawn into figure；It is respectively equipped with fixation hole 27,28 in the joining place of shell 17 and shell 18,
The quantity of fixation hole is set as needed with position.
Magnetism gathering rings are square hollow structure similar with shell, and magnetic core 1a and 2a, magnetic core 1b and 2b are respectively square hollow
A part of structure, magnetic core 1a and 2a, magnetic core 1b and 2b are the half of square hollow structure, magnetic core 1a respectively in the present embodiment
Two ends are respectively provided with 2a, magnetic core 1b and 2b, the structure of each end point is dentalation, an end point of magnetic core 1a
The dentalation of dentalation and mono- end point magnetic core 1b cooperate and it is seamless engage, the dentation of another end point of magnetic core 1a
The dentalation of structure and another end point magnetic core 1b cooperate and it is seamless engage, likewise, the two of magnetic core 2a and magnetic core 2b
The dentalation of end point cooperates and seamless engagement；Magnetic core 1a and 2a, magnetic core 1b and 2b is seamless engagement position be located at it is outer
At the seam of shell 17,18.
19,20 inside of skeleton is double-layer structure, for the first magnetism gathering rings and the second magnetism gathering rings, the magnetic of the first magnetism gathering rings to be isolated
The magnetic core 2a of core 1a and the second magnetism gathering rings is separately positioned on each layer of skeleton 19, and secondary coil 7 is looped around magnetic core 1a and magnetic simultaneously
On core 2a, the magnetic core 1b of the first magnetism gathering rings and the magnetic core 2b of the second magnetism gathering rings are separately positioned on each layer of skeleton 20, secondary coil 3
It is looped around on magnetic core 1b and magnetic core 2b simultaneously.
4 electrical connection circuit plate 22 of secondary coil 3 and Hall element, 6 electrical connection circuit plate of secondary coil 7 and Hall element
21, leading foot is arranged by connector or cable mode in circuit board 21,22.
Specific embodiment nine
Such as a kind of specific electric connection mode for the closed-loop Hall current sensor that Figure 10, Figure 10 a are specific embodiment eight
100, wherein Figure 10 is the top view of electrical connection, the right view of Figure 10 a electrical connection.
Connector 8a on circuit board 21 is matched with the connector 8b on circuit board 22, and electrical connection circuit plate 21 and electricity
Magnetism gathering rings 1 are formed after road plate 22, magnetic core 1a and the seamless engagement of magnetic core 1b, form magnetism gathering rings after magnetic core 2a and the seamless engagement of magnetic core 2b
2；Magnetism gathering rings 1 are located at the front of circuit board 21,22, and the direction of the leading foot of the Hall element 6 at 1 air gap of magnetism gathering rings is perpendicular to electricity
Road plate 21, the leading foot of Hall element 6 are directly connected on circuit board 21；Magnetism gathering rings 2 are located at the front of magnetism gathering rings 1, because of poly- magnetic
The leading foot of the presence of ring 1, the Hall element 4 at 2 air gap of magnetism gathering rings is oriented parallel to circuit board 22, the extraction of Hall element 4
Foot is connected on Hall pinboard 25, and Hall pinboard 25 connects circuit board 22.
Hall pinboard 25 is one of flexible circuit board or pcb board.
The above content is combine it is specific/further detailed description of the invention for preferred embodiment, cannot
Assert that specific implementation of the invention is only limited to these instructions.General technical staff of the technical field of the invention is come
It says, without departing from the inventive concept of the premise, some replacements or modifications can also be made to the embodiment that these have been described,
And these substitutions or variant all shall be regarded as belonging to protection scope of the present invention.
Claims (11)
1. a kind of closed-loop Hall current sensor, including magnetism gathering rings, secondary coil, Hall element, skeleton, circuit board, cover board and
Shell, the magnetism gathering rings include two mutually isolated the first magnetism gathering rings and the second magnetism gathering rings, and the skeleton is double-layer structure, are used
In isolation first magnetism gathering rings and the second magnetism gathering rings；The skeleton is arranged on first magnetism gathering rings and the second magnetism gathering rings,
There is air gap, the Hall element is arranged in the gap position, and the secondary coil is looped around the bone on the magnetism gathering rings
On frame, the circuit board is electrically connected with the Hall element, the secondary coil；It is the magnetism gathering rings, the secondary coil, described
Hall element, the skeleton, the circuit board are arranged in the shell；
It is characterized by: the shell, the cover board respectively include discrete two parts, the shell includes outside discrete first
Shell forms entirety together with second housing seamless connection；
First magnetism gathering rings and the second magnetism gathering rings respectively include discrete two parts magnetic core, the first magnetic of first magnetism gathering rings
The third magnetic core of core and the second magnetism gathering rings is arranged in simultaneously in first shell, the second magnetic core of first magnetism gathering rings and
4th magnetic core of two magnetism gathering rings is arranged in the second housing simultaneously, and first magnetic core and second magnetic core are described outer
Engagement that the joining place of shell is seamless constitutes first magnetism gathering rings, and the third magnetic core and the 4th magnetic core are in the shell
The seamless engagement of the joining place constitute second magnetism gathering rings；The position for engagement that magnetic core is seamless is located at the seam of shell；
The discrete cover board covers conjunction on first shell and the second housing respectively.
2. closed-loop Hall current sensor according to claim 1, it is characterised in that:
The secondary coil, the skeleton, the circuit board respectively include discrete two parts, first shell and described the
A part of the secondary coil, the skeleton, the circuit board is also respectively provided in two shells.
3. closed-loop Hall current sensor according to claim 2, it is characterised in that:
Seam, first shell is arranged in first shell and the second housing on the rank face of the joining place respectively
The first interior magnetic core with the second magnetic core in second housing is seamless at the seam engages, the third in first shell
Magnetic core with the 4th magnetic core in second housing is seamless at the seam engages, the first circuit board in first shell with
Second circuit board in second housing is electrically connected in the joining place.
4. closed-loop Hall current sensor according to claim 1, it is characterised in that: first magnetic core to the described 4th
Magnetic core is to stack riveted with sheet to form, and forms dentalation in the seamless engagement place.
5. closed-loop Hall current sensor according to claim 1, it is characterised in that: the shell be it is hollow rectangular or
Circle, corresponding first shell and the second housing are described rectangular or circular a part, and first magnetic core is extremely
4th magnetic core is and described rectangular or round corresponding rectangular or circular a part.
6. closed-loop Hall current sensor according to claim 1, it is characterised in that: described in being provided on the skeleton suddenly
The locating slot for being inserted into hole or/and the air gap of your element.
7. closed-loop Hall current sensor according to claim 1, it is characterised in that: first shell and described second
The positioning device that the joining place of shell is provided with for realizing shell seamless linking.
8. closed-loop Hall current sensor according to claim 1, it is characterised in that: the Hall element and primary coil
Two ends be welded on the circuit board, leading foot is arranged by connector or cable mode in the circuit board.
9. closed-loop Hall current sensor according to claim 1, it is characterised in that: first magnetism gathering rings and described the
N number of air gap is respectively arranged on two magnetism gathering rings, the air gap is symmetric on magnetism gathering rings, wherein N >=1.
10. closed-loop Hall current sensor according to claim 1, it is characterised in that: the Hall element passes through Hall
Element pinboard is electrically connected on the circuit board.
11. closed-loop Hall current sensor according to claim 10, it is characterised in that: the circuit board includes the first electricity
Road plate and second circuit board；The direction of the leading foot of Hall element at the first magnetism gathering rings air gap is perpendicular to first electricity
Road plate, the leading foot of the Hall element at the second magnetism gathering rings air gap are oriented parallel to the second circuit board.
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| KR101708736B1 (en) * | 2016-07-29 | 2017-02-21 | 주식회사 코본테크 | Current detection device with PCB multi-layer core structure |
| CN109917163A (en) * | 2017-12-12 | 2019-06-21 | 张皓 | A kind of Hall current sensor |
| CN110108922B (en) * | 2019-05-28 | 2024-02-23 | 南京普肯传感科技有限公司 | Magnetic circuit mounting structure for detachable open-loop Hall current sensor |
| CN115831529B (en) * | 2022-11-17 | 2024-01-23 | 南方电网数字电网研究院有限公司 | Magnetic flux collecting ring and current sensor |
| CN117594340B (en) * | 2024-01-15 | 2024-04-16 | 江苏常荣电器股份有限公司 | Closed loop hall current sensor coil design structure |
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| CN205608061U (en) * | 2015-12-31 | 2016-09-28 | 深圳青铜剑科技股份有限公司 | Closed -loop hall current sensor |
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| CN102411081A (en) * | 2011-11-29 | 2012-04-11 | 株洲南车时代电气股份有限公司 | Split heavy current repeater Hall current sensor |
| CN103529267A (en) * | 2012-07-06 | 2014-01-22 | 塞尼斯公司 | Current transducer for measuring a current |
| 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 |
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