CN105548646A - Closed-loop Hall current sensor - Google Patents
Closed-loop Hall current sensor Download PDFInfo
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- CN105548646A CN105548646A CN201511031703.1A CN201511031703A CN105548646A CN 105548646 A CN105548646 A CN 105548646A CN 201511031703 A CN201511031703 A CN 201511031703A CN 105548646 A CN105548646 A CN 105548646A
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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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- General Physics & Mathematics (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
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- Measuring Magnetic Variables (AREA)
Abstract
The invention discloses a closed-loop Hall current sensor. The closed-loop Hall current sensor comprises a magnetic ring, a secondary coil, a hall element and a circuit board controller, wherein the magnetic ring comprises two separate magnetic cores, each magnetic core is provided with two terminations, the two magnetic cores are engaged with each other seamlessly at the two terminations to form the closed magnetic ring, and the termination portions, which are engaged, of the magnetic ring are of curved-surface structures; an air gaps are arranged in the magnetic cores; and the separate structure of the magnetic ring enables the closed-loop Hall sensor to be separate into two parts, the installation is facilitated under the condition that a busbar cable is not dismounted, and at the same time, such a closed-loop structure can also improve the current detection precision.
Description
Technical field
The present invention relates to current sensor, particularly relate to a kind of closed-loop Hall current sensor.
Background technology
Sensor is a kind of pick-up unit, the relevant information of tested equipment can be detected, and the information being for conversion into electric signal or other desired forms according to certain rules exports, to meet the requirements such as the transmission of information, process, storage, display, record and control.Sensor application scope widely, for instrumentation devices provides a kind of technical support of indispensability.Hall current sensor is a kind of current measuring element primary current being carried out to isolation detection that application Hall effect principle is developed, the magnetic field that primary current produces is collected by magnetism gathering rings, the Hall element being placed in magnetism gathering rings gathers this magnetic field, produce one with the Hall voltage of magnetic field, former limit equal proportion, by measuring the size of this Hall voltage, the isolation detection to primary current just can be realized.
Existing Hall current sensor has Open loop and closed loop two kinds.Open loop Hall current sensor technique is simple, cost is low, mounting means variation, tested electric current is larger, be convenient to produce and application, but accuracy of detection is comparatively large by the impact of the disturbing factor such as external environment and temperature, stability is bad, frequency of operation can only accomplish below 50kHz, cannot normally use under some high frequency environment and the many environment of interference source.Closed-loop Hall current sensor precision is high, strong interference immunity, good stability, frequency of operation can reach 200kHz, but due to the singularity of its principle, mounting means has limitation, be generally divided into the installation of overall through hole and PCB that two kinds of forms are installed, be not easy to user flexibility application, cannot install and use under busbar overcurrent cable is inconvenient to the special occasions disassembled.
Therefore, a kind ofly can conveniently to install and the high current sensor of measuring accuracy is problem demanding prompt solution.
Summary of the invention
The object of the invention is exactly for solving the problem of installing closed-loop Hall current sensor when not disassembling busbar cable.
Technical matters of the present invention is solved by following technical scheme:
A kind of closed-loop Hall current sensor, comprise magnetism gathering rings, secondary coil, Hall element and circuit controller, described magnetism gathering rings has air gap, described Hall element is arranged on the described gap position on described magnetism gathering rings, described secondary coil is looped around on described magnetism gathering rings, described circuit controller and described secondary coil, described Hall element electrical connection, it is characterized in that: described magnetism gathering rings comprises two discrete magnetic cores, each magnetic core comprises two terminations, at two ends place, mutual seamless engagement forms closed magnetism gathering rings to two described magnetic cores, the end portion that described magnetic core is meshed is curved-surface structure, described air gap is arranged in described magnetic core.
According to another concrete aspect of the present invention, the end portion that described magnetic core is meshed is the dentalation cooperatively interacted.
According to another concrete aspect of the present invention, described magnetic core forms with the stacking riveted of sheet, and the end portion be meshed at described magnetic core forms the dentalation cooperatively interacted.
According to another concrete aspect of the present invention, described air gap is arranged on the centre position of one of them magnetic core.
According to another concrete aspect of the present invention, described primary coil is looped around to be had on the magnetic core of air gap, or to be looped around on two magnetic cores and to be electrically connected.
According to another concrete aspect of the present invention, described air gap is separately positioned on two magnetic cores, and is symmetric on magnetism gathering rings.
According to another concrete aspect of the present invention, the quantity of described Hall element equals the quantity of air gap on magnetism gathering rings.
According to another concrete aspect of the present invention, described secondary coil to be looped around respectively on two magnetic cores and to be electrically connected.
According to another concrete aspect of the present invention, described magnetism gathering rings is hollow square or circular, and corresponding described magnetic core is a described square or circular part.
According to another concrete aspect of the present invention, described magnetism gathering rings comprises two mutually isolated the first magnetism gathering rings and the second magnetism gathering rings.
According to another concrete aspect of the present invention, described first magnetism gathering rings and described second magnetism gathering rings have an air gap respectively, and described air gap is symmetrically distributed on described magnetism gathering rings.
The beneficial effect that the present invention is compared with the prior art is:
Closed-loop Hall current sensor of the present invention, magnetism gathering rings is formed by two discrete seamless engagements of magnetic core, the convenient installation when not disassembling busbar cable, again because adopt closed loop configuration, the precision of closed-loop Hall current sensor can be reached, combine traditional open loop Hall current sensor and the advantage of closed-loop Hall current sensor, precision easy for installation is high.
Accompanying drawing explanation
Fig. 1, Fig. 1 a is the structural representation of the specific embodiment of the invention one;
Fig. 2, Fig. 2 a is the structural representation of the specific embodiment of the invention two;
Fig. 3, Fig. 3 a is the structural representation of the specific embodiment of the invention three;
Fig. 4 is the structural representation of the specific embodiment of the invention four;
Fig. 5 is the structural representation of the specific embodiment of the invention five;
Fig. 6 is the structural representation of the specific embodiment of the invention six;
Fig. 7, Fig. 8 are the structural representations of the specific embodiment of the invention seven;
Fig. 9 is the structural representation of the specific embodiment of the invention eight;
Figure 10, Figure 10 a is the structural representation of the specific embodiment of the invention nine.
Embodiment
Embodiment one
A kind of closed-loop Hall current sensor 10 is as Fig. 1, shown in Fig. 1 a, comprise magnetism gathering rings, secondary coil 3, Hall element 4 and circuit controller 5, described magnetism gathering rings comprises two discrete magnetic cores 1 and magnetic core 2, magnetic core 1 and magnetic core 2 have two terminations respectively, each termination is designed to dentalation, the dentalation of magnetic core 1 end matches with the dentalation of magnetic core 2 end, as shown in Figure 1a, magnetic core 1 forms closed magnetism gathering rings with mutual seamless engagement the in magnetic core 2 two ends place, magnetic core 1 and magnetic core 2 are respectively a part for magnetism gathering rings, magnetic core 2 has air gap, magnetic core 1 does not arrange air gap, Hall element 4 is arranged on the gap position on magnetic core 2, secondary coil 3 is looped around on magnetic core 2, circuit controller 5 and described secondary coil 3, described Hall element 4 is electrically connected, and the signal that Hall element collects is processed, 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 also can be the distressed structure of dentalation, or can any one curved-surface structure of seamless combination mutually.
When needing the strength of current detecting tested cable, magnetic core 1 and magnetic core 2 are separated, magnetic core 1 and magnetic core 2 is put into respectively from the both sides of tested cable, magnetic core 1 and the tooth-like part of anything of magnetic core 2 are mutual seamlessly to be engaged, now magnetic core 1 and magnetic core 2 form closed magnetism gathering rings, and magnetism gathering rings, secondary coil 3, Hall element 4 and circuit controller 5 form closed-loop Hall current sensor.
Magnetic core 1 and magnetic core 2 are formed by high magnetic conduction sheet material stacks riveted, and when stacking riveted, at the two ends stacking formation dentalation of magnetic core 1 with magnetic core 2, the seamless engagement of dentation of the corresponding tip position of two magnetic cores forms closed magnetism gathering rings.
Air gap on magnetic core 2 is arranged on the centre position of magnetic core 2, or is arranged on the optional position of magnetic core 2.
Magnetic core 1 and magnetic core 2 can be respectively half square or half circular configuration, form hollow square or circular magnetism gathering rings after two magnetic cores combine.
Magnetic core 1 is the sub-fraction of square hollow or circle, and magnetic core 2 is most of square hollow or circle, and two magnetic cores equally also can form magnetism gathering rings that is square or circular configuration after combining.
Magnetism gathering rings also can be the closed shape that the centre of an arbitrary structures has through hole, and magnetic core 1 and magnetic core 2 are ingredients of this closed shape.
Embodiment two
A kind of closed-loop Hall current sensor 20 is as Fig. 2, shown in Fig. 2 a, comprise magnetism gathering rings, secondary coil 3 and 7, Hall element 4 and 6, and circuit controller 5, described magnetism gathering rings comprises two discrete magnetic cores 1 and magnetic core 2, magnetic core 1 and magnetic core 2 have two terminations respectively, each termination is designed to dentalation, the dentalation of magnetic core 1 end matches with the dentalation of magnetic core 2 end, as shown in Figure 2 a, the mutual seamless engagement in two ends place forms closed magnetism gathering rings, magnetic core 1 and magnetic core 2 are respectively a part for magnetism gathering rings, magnetic core 1 and magnetic core 2 has air gap respectively, Hall element 4 is arranged on the gap position on magnetic core 2, and secondary coil 3 is looped around on magnetic core 2, Hall element 6 is arranged on the gap position on magnetic core 1, 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 is electrically connected with described secondary coil 3 and 7, described Hall element 4 and 6 respectively, processes the signal that Hall element collects, be connected to circuit controller 5 after secondary coil 7 and Hall element 6 are electrically connected with secondary coil 3 by connector 8, wherein Fig. 2 a is the side view of magnetism gathering rings structure in Fig. 2.
Or the end portion that magnetic core 1 is meshed with magnetic core 2 is the distressed structure of dentalation, or can any one curved-surface structure of seamless combination mutually.
When needing the strength of current detecting tested cable, magnetic core 1 and magnetic core 2 are separated, magnetic core 1 and magnetic core 2 is put into respectively from the both sides of tested cable, magnetic core 1 and the tooth-like part of anything of the termination of magnetic core 2 are mutual seamlessly to be engaged, now magnetic core 1 and magnetic core 2 form closed magnetism gathering rings, and magnetism gathering rings, secondary coil 3 and 7, Hall element 4 and 6 and circuit controller 5 form the two Hall current sensor of closed loop.
Magnetic core 1 is arranged on the centre position of magnetic core 1 and magnetic core 2 with the air gap on magnetic core 2, or is arranged on the optional position of magnetic core 1 and magnetic core 2, and its air gap is symmetrical on magnetism gathering rings.
Magnetic core 1 can be arranged to N number of with the air gap on magnetic core 2, and the air gap now on magnetism gathering rings is exactly 2N, and 2N air gap is symmetrically distributed on magnetism gathering rings, wherein N >=1; The quantity of Hall element equals air gap number.
Magnetic core 1 and magnetic core 2 can be respectively half square or half circular configuration, form hollow square or circular magnetism gathering rings after two magnetic cores combine.
Magnetic core 1 is square or circular sub-fraction, and magnetic core 2 is square or circular most, forms hollow square or circular magnetism gathering rings after two magnetic cores combine.
Magnetism gathering rings also can be the closed shape that the centre of an arbitrary structures has through hole, and magnetic core 1 and magnetic core 2 are two ingredients of this closed shape.
Embodiment three
A kind of closed-loop Hall current sensor 30 is as Fig. 3, shown in Fig. 3 a, comprise magnetism gathering rings, secondary coil 3 and 7, Hall element 4 and 6, and circuit controller 5, described magnetism gathering rings comprises the first mutually isolated magnetism gathering rings and the second magnetism gathering rings, described first magnetism gathering rings comprises two discrete magnetic cores 101 and magnetic core 102 one-tenth, magnetic core 101 and magnetic core 102 have two terminations respectively, each end is dentalation, the dentalation of magnetic core 101 end matches with the dentalation of magnetic core 102 end, the mutual seamless engagement in two ends place forms the first closed magnetism gathering rings, first magnetism gathering rings has air gap, described second magnetism gathering rings comprises two discrete magnetic cores 201 and magnetic core 202, magnetic core 201 and magnetic core 202 have two terminations respectively, each end is dentalation, the dentalation of magnetic core 201 end matches with the dentalation of magnetic core 202 end, the mutual seamless engagement in two ends place forms the second closed magnetism gathering rings, second magnetism gathering rings has air gap, as shown in Figure 3 a, Hall element 4 is arranged on the gap position on the magnetic core 202 of the second magnetism gathering rings, and secondary coil 3 is looped around magnetic core 102 with on magnetic core 202 simultaneously, Hall element 6 is arranged on the gap position on the magnetic core 101 of the first magnetism gathering rings, secondary coil 7 is looped around magnetic core 101 with on magnetic core 201 simultaneously, Hall element 4 is symmetrical on magnetism gathering rings with Hall element 6, circuit controller 5 is electrically connected with described secondary coil 3 and 7, described Hall element 4 and 6 respectively, processes the signal that Hall element collects, be connected to circuit controller 5 after secondary coil 7 and Hall element 6 are electrically connected with secondary coil 3 by connector 8, wherein Fig. 3 a is the side view of magnetism gathering rings structure in Fig. 3.
Or the end portion that the end portion that magnetic core 101 is meshed with magnetic core 102, magnetic core 201 are meshed with magnetic core 202 is the distressed structure of dentalation, or can any one curved-surface structure of seamless combination mutually.
When needing the strength of current detecting tested cable, by magnetic core 101, 201 with magnetic core 102, 202 separately, magnetic core 101 is put into respectively from the both sides of tested cable, 201 with magnetic core 102, 202, magnetic core 101 and the tooth-like part of anything of the termination of magnetic core 102 are mutual seamlessly to be engaged, magnetic core 201 and the tooth-like part of anything of the termination of magnetic core 202 are mutual seamlessly to be engaged, magnetic core 101 and magnetic core 102 form the first closed magnetism gathering rings, magnetic core 201 and magnetic core 202 form the second closed magnetism gathering rings, magnetism gathering rings, secondary coil 3 and 7, Hall element 4 and 6 and circuit controller 5 form the two Hall closed-loop current sensors of dicyclo.
Magnetic core 101 is arranged on the centre position of magnetic core 101 and magnetic core 202 with the air gap on magnetic core 202, or is arranged on the optional position of magnetic core 101 and magnetic core 202, or is arranged on the optional position of magnetic core 102 and magnetic core 201, and its air gap is symmetrical on magnetism gathering rings.
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 distributes N number of air gap, and the quantity of Hall element equals air gap number.
Embodiment four
As shown in Figure 4, closed-loop Hall current sensor 40 is closed-loop current sensors of the two Hall of a kind of monocycle to a kind of closed-loop Hall current sensor 40, comprises shell, magnetism gathering rings, circuit board, skeleton, secondary coil, cover plate; Described shell comprises shell 1 and shell 2 two parts, described magnetism gathering rings comprises magnetic core 4 and magnetic core 9 two parts, described circuit board comprises circuit board 11 and circuit board 12, described skeleton comprises skeleton 6 and skeleton 7, described secondary coil comprises secondary coil 3 and secondary coil 5, and described cover plate comprises cover plate 13 and cover plate 14.
Be provided with magnetic core 9, skeleton 6, secondary coil 3, circuit board 12 in shell 1, secondary coil 3 is looped around on skeleton 6, and skeleton 6 is arranged on magnetic core 9, circuit board 12 is provided with Hall element 10, and cover plate 14 covers on shell 1; Magnetic core 4, skeleton 7, secondary coil 5, circuit board 11 is provided with in shell 2, secondary coil 5 is looped around on skeleton 7, skeleton 7 is arranged on magnetic core 4, circuit board 11 is provided with Hall element 8, cover plate 13 covers on shell 2, needs in order to illustrate in Fig. 4, separately draw magnetic core 4, skeleton 7, secondary coil 5, by magnetic core 9, skeleton 6, secondary coil 3 with the result diagram after installation.
Relevant position on skeleton 6 and secondary coil 3 is provided with Hall element pilot hole 19, and the Hall element 10 on battery lead plate 12 is arranged in pilot hole 19; Same, the relevant position on skeleton 7 and secondary coil 5 is provided with Hall element pilot hole 20, and the Hall element 8 on battery lead plate 11 is arranged in pilot hole 20.
Shell is square hollow structure, and shell 1 and shell 2 are a part for described square hollow structure, and shell 1 and shell 2 are symmetrical in the present embodiment, but are not limited thereto; Shell 1 and shell 2 seamless connection, shell 1 with the interface of shell 2 joining place are provided with seam, as shown in shell 2 seam 21, are also provided with seam equally, do not draw in Fig. 1 on two interfaces of shell 1 and another interface of shell 2; Also be provided with fixed orifice, the fixed orifice 15 of shell 1 as shown in Figure 1, the fixed orifice 16 of shell 2 at shell 1 and the joining place of shell 2, quantity and the position of fixed orifice are arranged as required, are not limited to two fixed orifices.
Magnetism gathering rings is the square hollow structure similar to shell, magnetic core 4 and magnetic core 9 are respectively a part for described square hollow structure, magnetic core 4 and magnetic core 9 are the half of described square hollow structure respectively in the present embodiment, magnetic core 4 and magnetic core 9 have two terminations respectively, the structure of each end is dentalation, the dentalation of one end of magnetic core 4 cooperatively interacts with the dentalation of magnetic core 9 one end and seamlessly to engage, the dentalation of another end of magnetic core 4 cooperatively interacts with the dentalation of another end of magnetic core 9 and seamlessly to engage, magnetic core 4 and the seamless position of engaging of magnetic core 9 are positioned at the seam place of shell 1 and shell 2, magnetic core 4 is provided with air gap, and its position is corresponding with the pilot hole 20 on skeleton 7, magnetic core 9 is provided with air gap, its position is corresponding with the pilot hole 19 on skeleton 6, described air gap is symmetric on magnetism gathering rings, the pilot hole 20 corresponding with gap position is symmetric on magnetism gathering rings with pilot hole 19, air gap described in the present embodiment is separately positioned on the centre position of magnetic core 4,9, but is not limited thereto.
Circuit board 12 and circuit board 11 are respectively a part for the described square hollow structure similar to magnetic core 9 to magnetic core 4, circuit board 12 is provided with Hall element 10, connector 17 and related circuit, connector 17 is arranged on the tip position of circuit board 12, the two ends welding of secondary coil 3 on the circuit board 12, circuit board 11 is provided with Hall element 8, connector 18 and related circuit, connector 18 is arranged on the tip position of circuit board 11, and the two ends of secondary coil 5 is welded on circuit board 11; The position of Hall element 8 is corresponding with the pilot hole 20 on skeleton 7, and the position of Hall element 10 is corresponding with the pilot hole 19 on skeleton 6; Connector 17 and connector 18 match, electrical connection circuit plate 12 and circuit board 11 when shell is installed; Circuit board 11,12 arranges leading foot by connector or cable mode.
Or shell is hollow circular configuration, or hollow any ring texture.
Embodiment five
A kind of closed-loop Hall current sensor 50 as shown in Figure 5, closed-loop Hall current sensor 50 is closed-loop current sensors of a kind of monocycle list Hall, the difference of itself and closed-loop Hall current sensor 40 is, only an air gap is set on magnetic core 4, and magnetic core 9 is not arranged air gap, corresponding magnetic core 9 does not arrange skeleton and secondary coil yet, in shell 1, circuit board is not set yet, namely only have air gap, circuit board, skeleton and a secondary coil.
The closed-loop current sensors of above monocycle list Hall includes monoskeleton, single secondary coil, single circuit plate.
Or as required, the closed-loop current sensors of monocycle list Hall also can arrange skeleton and secondary coil respectively on magnetic core 4 with magnetic core 9, arranges circuit board respectively in shell 1 with shell 2.
Embodiment six
One of frame mode of magnetism gathering rings 60 as shown in Figure 6, the square hollow structure that magnetism gathering rings 60 is made up of magnetic core 4 and magnetic core 9, magnetic core 4 and magnetic core 9 are respectively a wherein part for square hollow structure, magnetic core 4 has two terminations 23, 25, each end is dentalation, in the centre position of magnetic core 4, air gap 27 is set, magnetic core 9 has two terminations 24, 26, each end is dentalation, in the centre position of magnetic core 9, air gap 28 is set, the dentalation of termination 23 matches with the dentalation of termination 24, the dentalation of termination 25 matches with the dentalation of termination 26, when magnetic core 4 is connected with magnetic core 9, the dentalation of termination 23 and the dentalation seamless connection of termination 24, the dentalation of termination 25 and the dentalation seamless connection of termination 26, magnetic core 4 and magnetic core 9 seamless connection are magnetism gathering rings 60.
Or the air gap number of magnetism gathering rings is one, be arranged on one of them magnetic core; Or the air gap number of magnetism gathering rings is the integral multiple of 2, be separately positioned on two magnetic cores, now, the air gap of magnetism gathering rings is symmetric on magnetism gathering rings.
Embodiment seven
A kind of external structure of closed-loop Hall current sensor is as Fig. 7, shown in Fig. 8, structure 70 when Fig. 7 is closed-loop Hall current sensor folding, Fig. 8 is the structure 80 of closed-loop Hall current sensor when closing, closed-loop Hall current sensor comprises discrete shell 1 assembly and shell 2 assembly, shell 1 and shell 2 form square hollow structure, shell 1 assembly and shell 2 assembly comprise shell respectively, magnetic core, circuit board, skeleton, secondary coil, cover plate, the dentalation 23 of the end of the magnetic core in shell 1 assembly, 25 seams protruding from shell 1 joining place, the dentalation 24 of the end of the magnetic core in shell 2 assembly, 26 seams protruding from shell 2 joining place, shell 1 assembly and shell 2 assembly pass through the pilot hole 15 of joining place, 16 and 27, 28 realize seamless connection, dentalation 23, 24 and 25, 26 also realize seamless connection at seam place.
Embodiment eight
As shown in Figure 9, closed-loop Hall current sensor 90 is closed-loop current sensors of the two Hall of a kind of dicyclo to a kind of closed-loop Hall current sensor 90, comprises shell, magnetism gathering rings, circuit board, skeleton, secondary coil, cover plate; Described shell comprises shell 17 and shell 18 two parts, described magnetism gathering rings comprises the first magnetism gathering rings and the second magnetism gathering rings, described first magnetism gathering rings comprises magnetic core 1a and magnetic core 1b two parts, described second magnetism gathering rings comprises magnetic core 2a and magnetic core 2b two parts, described circuit board comprises circuit board 21 and circuit board 22, described skeleton comprises skeleton 19 and skeleton 20, and described secondary coil comprises secondary coil 3 and secondary coil 7, and described cover plate comprises cover plate 23 and cover plate 24 two parts.
Magnetic core 1a and 2a, skeleton 19, secondary coil 7, circuit board 21 is provided with in shell 17, secondary coil 7 is looped around on skeleton 19, skeleton 19 is arranged on magnetic core 1a and 2a, the air gap place of skeleton 19 is provided with the patchhole of Hall element, described patchhole place is provided with Hall element 6, the tip position of circuit board 21 is provided with connector 8a, cover plate 23 covers on shell 1; Magnetic core 1b and 2b, skeleton 20, secondary coil 3, circuit board 22 is provided with in shell 18, secondary coil 3 is looped around on skeleton 20, skeleton 7 is arranged on magnetic core 1b and 2b, the air gap place of skeleton 20 is provided with the patchhole of Hall element, described patchhole place is provided with Hall element 4, circuit board 21 tip position is provided with connector 8b, and cover plate 24 covers on shell 18, and connector 8a and 8b cooperatively interacts and electrical connection circuit plate 21 and 22; Needs in order to illustrate in Fig. 9, separately draw magnetic core 1b and 2b, skeleton 20, secondary coil 3, by magnetic core 1a and 2a, skeleton 19 with the result diagram after installation.
First magnetism gathering rings is provided with air gap, and its position is corresponding with the patchhole of the Hall element on skeleton 19; Second magnetism gathering rings is provided with air gap, and its position is corresponding with the patchhole of the Hall element on skeleton 20, and the gap position on the first magnetism gathering rings and the second magnetism gathering rings is symmetric at magnetism gathering rings.Hall element 6 is placed on the air gap place of the first magnetism gathering rings, and Hall element 4 is placed on the air gap place of the second magnetism gathering rings, and Hall element 6 is mutually vertical with the leading foot direction of Hall element 4, skeleton 19,20 is also provided with the locating slot of described air gap, not shown in FIG..
Shell is hollow square structure, and shell 17 and shell 18 are a part for square hollow structure, and shell 17 and shell 18 are symmetrical in the present embodiment, but are not limited thereto; Shell 17 and shell 18 seamless connection, shell 17 with the interface of shell 18 joining place are provided with seam, and the interface of shell 18 joining place is provided with seam 25,26, and shell 17 is also provided with seam in corresponding position, not shown in FIG.; Be respectively equipped with fixed orifice 27,28 at shell 17 and the joining place of shell 18, quantity and the position of fixed orifice are arranged as required.
Magnetism gathering rings is the square hollow structure similar to shell, magnetic core 1a and 2a, magnetic core 1b and 2b is respectively a part for square hollow structure, magnetic core 1a and 2a in the present embodiment, magnetic core 1b and 2b is the half of square hollow structure respectively, magnetic core 1a and 2a, magnetic core 1b and 2b has two terminations respectively, the structure of each end is dentalation, the dentalation of one end of magnetic core 1a cooperatively interacts with the dentalation of magnetic core 1b mono-end and seamlessly to engage, the dentalation of another end of magnetic core 1a cooperatively interacts with the dentalation of another end of magnetic core 1b and seamlessly to engage, same, the dentalation at the two ends place of magnetic core 2a and magnetic core 2b cooperatively interacts and seamless engagement, the position of magnetic core 1a and 2a, magnetic core 1b and 2b is seamless engagement is positioned at the seam place of shell 17,18.
Skeleton 19,20 inside is double-decker, for isolating the first magnetism gathering rings and the second magnetism gathering rings, the magnetic core 1a of the first magnetism gathering rings and the magnetic core 2a of the second magnetism gathering rings is separately positioned on each layer of skeleton 19, secondary coil 7 is looped around on magnetic core 1a and magnetic core 2a simultaneously, the magnetic core 1b of the first magnetism gathering rings and the magnetic core 2b of the second magnetism gathering rings is separately positioned on each layer of skeleton 20, and secondary coil 3 is looped around on magnetic core 1b and magnetic core 2b simultaneously.
Secondary coil 3 and Hall element 4 electrical connection circuit plate 22, secondary coil 7 and Hall element 6 electrical connection circuit plate 21, circuit board 21,22 arranges leading foot by connector or cable mode.
Embodiment nine
As the concrete electric connection mode 100 of one that Figure 10, Figure 10 a is the closed-loop Hall current sensor of embodiment eight, wherein Figure 10 is the vertical view of electrical connection, the right view that Figure 10 a is electrically connected.
Connector 8a on circuit board 21 matches with the connector 8b on circuit board 22, and electrical connection circuit plate 21 and circuit board 22, form magnetism gathering rings 1 after magnetic core 1a and the seamless engagement of magnetic core 1b, after magnetic core 2a and the seamless engagement of magnetic core 2b, form magnetism gathering rings 2; Magnetism gathering rings 1 is positioned at the front of circuit board 21,22, and the direction of the leading foot of the Hall element 6 at magnetism gathering rings 1 air gap place is perpendicular to circuit board 21, and the leading foot of Hall element 6 is directly connected on circuit board 21; Magnetism gathering rings 2 is positioned at the front of magnetism gathering rings 1, and because of the existence of magnetism gathering rings 1, the leading foot direction of the Hall element 4 at magnetism gathering rings 2 air gap place is parallel to circuit board 22, and the leading foot of Hall element 4 is connected on Hall card extender 25, Hall card extender 25 connecting circuit board 22.
Hall card extender 25 is the one in flexible circuit board or pcb board.
Above content, in conjunction with concrete/preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; its embodiment that can also describe these makes some substituting or modification, and these substitute or variant all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a closed-loop Hall current sensor, comprise magnetism gathering rings, secondary coil, Hall element and circuit controller, described magnetism gathering rings has air gap, described Hall element is arranged on the described gap position on described magnetism gathering rings, described secondary coil is looped around on described magnetism gathering rings, described circuit controller and described secondary coil, described Hall element electrical connection, it is characterized in that: described magnetism gathering rings comprises two discrete magnetic cores, each magnetic core comprises two terminations, at two ends place, mutual seamless engagement forms closed magnetism gathering rings to two described magnetic cores, the end portion that described magnetic core is meshed is curved-surface structure, described air gap is arranged in described magnetic core.
2. closed-loop Hall current sensor according to claim 1, is characterized in that: the end portion that described magnetic core is meshed is the dentalation cooperatively interacted.
3. closed-loop Hall current sensor according to claim 1 and 2, is characterized in that: described magnetic core forms with the stacking riveted of sheet, and the end portion be meshed at described magnetic core forms the dentalation cooperatively interacted.
4. closed-loop Hall current sensor according to claim 1, is characterized in that: described air gap is arranged on the centre position of one of them magnetic core.
5. closed-loop Hall current sensor according to claim 4, is characterized in that: described primary coil is looped around to be had on the magnetic core of air gap, or to be looped around on two magnetic cores and to be electrically connected.
6. closed-loop Hall current sensor according to claim 1, is characterized in that: described air gap is separately positioned on two magnetic cores, and is symmetric on magnetism gathering rings.
7. closed-loop Hall current sensor according to claim 1, is characterized in that: described secondary coil to be looped around respectively on two magnetic cores and to be electrically connected.
8. closed-loop Hall current sensor according to claim 1, is characterized in that: described magnetism gathering rings is hollow square or circular, and corresponding described magnetic core is a described square or circular part.
9. closed-loop Hall current sensor according to claim 1, is characterized in that: described magnetism gathering rings comprises two mutually isolated the first magnetism gathering rings and the second magnetism gathering rings.
10. closed-loop Hall current sensor according to claim 9, is characterized in that: described first magnetism gathering rings and described second magnetism gathering rings have an air gap respectively, and described air gap is symmetrically distributed on described magnetism gathering rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511031703.1A CN105548646A (en) | 2015-12-31 | 2015-12-31 | Closed-loop Hall current sensor |
Applications Claiming Priority (1)
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| CN108169539A (en) * | 2018-03-22 | 2018-06-15 | 广东电网有限责任公司清远供电局 | A kind of tong-type ammeter based on Hall effect |
| CN108279328A (en) * | 2017-01-05 | 2018-07-13 | 南通杰夫电气有限公司 | Driver for electric vehicle and open loop Hall current sensor |
| CN109425774A (en) * | 2017-08-25 | 2019-03-05 | 南京理工大学 | Easy-to-install current sensor adopting magnetoelectric composite material |
| CN112147393A (en) * | 2020-09-07 | 2020-12-29 | 珠海多创科技有限公司 | Design method of closed-loop current sensor |
| CN113607987A (en) * | 2021-07-30 | 2021-11-05 | 重庆长安汽车股份有限公司 | Current sensor structure |
| CN117594340A (en) * | 2024-01-15 | 2024-02-23 | 江苏常荣电器股份有限公司 | Closed loop hall current sensor coil design structure |
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| CN113607987A (en) * | 2021-07-30 | 2021-11-05 | 重庆长安汽车股份有限公司 | Current sensor structure |
| CN117594340A (en) * | 2024-01-15 | 2024-02-23 | 江苏常荣电器股份有限公司 | Closed loop hall current sensor coil design structure |
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