CN105675950A - Closed loop Hall current sensor - Google Patents
Closed loop Hall current sensor Download PDFInfo
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- CN105675950A CN105675950A CN201511032489.1A CN201511032489A CN105675950A CN 105675950 A CN105675950 A CN 105675950A CN 201511032489 A CN201511032489 A CN 201511032489A CN 105675950 A CN105675950 A CN 105675950A
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- magnetic core
- shell
- magnetism gathering
- gathering rings
- circuit board
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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
Abstract
A closed loop Hall current sensor disclosed by the present invention comprises magnetism gathering rings, a secondary coil, a Hall element, a skeleton, a circuit board, a cover plate and a shell. The shell, the secondary coil, the Hall element, the skeleton, the circuit board and the cover plate comprise the discrete two parts respectively, the magnetism gathering rings comprise a first magnetism gathering ring and a second magnetism gathering ring which are isolated mutually, and the first and second magnetism gathering rings are formed by the mutual seamless meshing of two discrete magnetic cores separately. The discrete magnetic core, the discrete secondary coil, the discrete Hall element, the discrete skeleton and the discrete circuit board are arranged in each part of shell separately, the two discrete shells are joined together to form a Hall current sensor, and the magnetic cores in the two discrete shells are in seamless meshing at the joining position of the two shells. The two discrete shells are covered by the discrete cover plates respectively, and the discrete structures of the shells enable the closed loop Hall current sensor to be separated into two independent parts. Therefore, the installation is convenient, and the current detection precision is improved.
Description
Technical field
The present invention relates to current sensor, particularly relate to a kind of can the closed-loop Hall current sensor of folding.
Background technology
Sensor is a kind of detecting device, the relevant information of tested equipment can be detected, is for conversion into the information output of the signal of telecommunication or other desired forms according to certain rules, to meet the requirements such as the transmission of information, process, storage, display, record and control. Sensor range of application widely, provides the technical support of a kind of indispensability for instrumentation devices. Hall current sensor is a kind of current measuring element that primary current carries out isolation detection that application Hall effect principle is developed, the magnetic field that primary current produces is collected by magnetism gathering rings, this magnetic field is acquired by the Hall element being placed in magnetism gathering rings, produce the Hall voltage of and magnetic field, former limit equal proportion, by measuring the size of this Hall voltage, so that it may realize the isolation detection to primary current.
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 bigger, being easy to produce and application, but accuracy of detection is relatively big by the impact of the interference factor such as external environment and temperature, stability is bad, operating frequency can only accomplish below 50kHz, cannot normally use under the environment that some high frequency environment and interference source are relatively more. Closed-loop Hall current sensor precision is high, strong interference immunity, good stability, operating frequency can reach 200kHz, but due to the particularity of its principle, mounting means has limitation, it is generally divided into overall through hole and installs and PCB two kinds of forms of installation, it is not easy to user flexibility application, crosses at busbar and cannot install and use under the special occasions that streamline cable is inconvenient to disassemble.
Therefore, a kind of can conveniently install and current sensor that certainty of measurement is high is problem demanding prompt solution.
Summary of the invention
The object of the invention is exactly the problem installing closed-loop Hall current sensor when not disassembling busbar cable for solution.
The technical problem of the present invention is solved by following technical scheme:
A kind of closed-loop Hall current sensor, including magnetism gathering rings, secondary coil, Hall element, skeleton, circuit board, cover plate and shell, described magnetism gathering rings includes two the first mutually isolated magnetism gathering rings and the second magnetism gathering rings, described skeleton is double-decker, described skeleton is arranged on described first magnetism gathering rings and the second magnetism gathering rings, described magnetism gathering rings has air gap, described Hall element is arranged on described gap position, described secondary coil is looped around on described skeleton, and described circuit board electrically connects with described Hall element, described secondary coil; Described magnetism gathering rings, described secondary coil, described Hall element, described skeleton, described circuit board are arranged in described shell; Described shell, described cover plate include discrete two parts respectively, and described shell is engaged togather by the first discrete shell and second housing and forms entirety; Described first magnetism gathering rings and the second magnetism gathering rings include discrete two parts magnetic core respectively, first magnetic core of described first magnetism gathering rings and the 3rd magnetic core of the second magnetism gathering rings are simultaneously located in described first shell, second magnetic core of described first magnetism gathering rings and the 4th magnetic core of the second magnetism gathering rings are simultaneously located in described second housing, described first magnetic core constitutes described first magnetism gathering rings with described second magnetic core seamless engagement of described joining place of described shell, and described 3rd magnetic core constitutes described second magnetism gathering rings with described 4th magnetic core seamless engagement of described joining place of described shell; Described discrete cover plate covers respectively on described first shell and described second housing.
Another specific aspect according to the present invention, described secondary coil, described skeleton, described circuit board include the part being also respectively provided with described secondary coil, described skeleton, described circuit board in discrete two parts, described first shell and described second housing respectively.
Another specific aspect according to the present invention, described first shell and described second housing arrange seam respectively on the rank face of described joining place, the first magnetic core in described first shell and the second magnetic core in second housing engage described seam place is seamless, the 3rd magnetic core in described first shell and the 4th magnetic core in second housing engage described seam place is seamless, and the first circuit board in described first shell electrically connects at described joining place with the second circuit board in second housing.
Another specific aspect according to the present invention, the first circuit board in described first shell is electrically connected by connector at described joining place with the second circuit board in described second housing.
Another specific aspect according to the present invention, described first magnetic core and described second magnetic core are the dentalation cooperated in described seamless engagement place, and described 3rd magnetic core and described 4th magnetic core are the dentalation cooperated in described seamless engagement place.
Another specific aspect according to the present invention, described first magnetic core to described 4th magnetic core is to form with the stacking riveted of lamellar, forms dentalation in described seamless engagement place.
Another specific aspect according to the present invention, described shell is hollow square or circular, described first shell and described second housing are described square or circular parts accordingly, and described first magnetic core to described 4th magnetic core is square with a described or circular corresponding square or circular part.
Another specific aspect according to the present invention, what described skeleton was provided with described Hall element inserts hole or/and the locating slot of described air gap.
Another specific aspect according to the present invention, described first shell is provided with for realizing the positioner that described shell seamless is connected with the joining place of described second housing.
The two ends of another specific aspect according to the present invention, described Hall element and described primary coil is welded on described circuit board, and described circuit board arranges leading foot by connector or cable mode.
Another specific aspect according to the present invention, described first magnetism gathering rings and described second magnetism gathering rings are respectively arranged with N number of air gap, and described air gap is symmetric on magnetism gathering rings, wherein N >=1.
The direction of the leading foot of the described Hall element at the described air gap place on another specific aspect according to the present invention, described first magnetism gathering rings and described second magnetism gathering rings is mutually perpendicular to.
Another specific aspect according to the present invention, when the direction of the leading foot of described Hall element is parallel with described circuit board, described Hall element is electrically connected on described circuit board by Hall element keyset.
Another specific aspect according to the present invention, described magnetism gathering rings is square or circular, and corresponding described magnetic core is half square or semicircle.
The present invention is compared with the prior art and provides the benefit that:
The closed-loop Hall current sensor of the present invention, change all structural members in existing closed-loop Hall current sensor and need to fix the frame mode of connection, adopting flexibly can opening-closing structure, casing assembly is divided into two, one independent individual of monolateral formation, both sides slitless connection is realized by the locating dowel of bilateral junction and buckle, without disassembling stream busbar during application, very convenient.
Present invention incorporates in open-loop principles can the good characteristic of the installation convenience of folding product and closed loop principle product, achieve the simple and direct lifting with precision during application, the sampling precision of product can be met, installation and the debugging of product can be facilitated again so that the application limitation of closed loop principle product gets a promotion.
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.
Detailed description of the invention
Detailed description of the invention one
A kind of closed-loop Hall current sensor 10 such as Fig. 1, shown in Fig. 1 a, including magnetism gathering rings, secondary coil 3, Hall element 4 and circuit controller 5, described magnetism gathering rings includes two discrete magnetic cores 1 and magnetic core 2, magnetic core 1 and magnetic core 2 are respectively provided with two terminations, each termination is designed as 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 seamless engage mutual to magnetic core 2 two ends place forms the magnetism gathering rings closed, a part for magnetic core 1 and magnetic core 2 respectively magnetism gathering rings, magnetic core 2 has air gap, magnetic core 1 is not provided with 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 electrically connects, and the signal that Hall element collected processes,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 can also be the distressed structure of dentalation, or can any one curved-surface structure of seamless combination mutually.
When needing the current intensity detecting tested cable, magnetic core 1 is separated with magnetic core 2, magnetic core 1 and magnetic core 2 it is respectively put into from the both sides of tested cable, magnetic core 1 is mutual with the tooth-like part of anything of magnetic core 2 seamless to be engaged, now magnetic core 1 and magnetic core 2 constitute the magnetism gathering rings of Guan Bi, 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 the high stacking riveted of magnetic conduction flaky material, and when stacking riveted, at the stacking formation dentalation of two ends of magnetic core 1 with magnetic core 2, the seamless engagement of dentation of the corresponding tip position of two magnetic cores forms the magnetism gathering rings of Guan Bi.
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 respectively half square or half circular configuration, two magnetic cores form hollow square or circular magnetism gathering rings after combining.
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 square or circular configuration magnetism gathering rings after combining.
Magnetism gathering rings can also be the closed shape that the centre of an arbitrary structures has through hole, and magnetic core 1 and magnetic core 2 are the ingredients of this closed shape.
Detailed description of the invention two
A kind of closed-loop Hall current sensor 20 such as Fig. 2, shown in Fig. 2 a, including magnetism gathering rings, secondary coil 3 and 7, Hall element 4 and 6, and circuit controller 5, described magnetism gathering rings includes two discrete magnetic cores 1 and magnetic core 2, magnetic core 1 and magnetic core 2 are respectively provided with two terminations, each termination is designed as 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 the magnetism gathering rings of Guan Bi, a part for magnetic core 1 and magnetic core 2 respectively magnetism gathering rings, magnetic core 1 and magnetic core 2 are respectively provided with air gap, 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 electrically connects with described secondary coil 3 and 7, described Hall element 4 and 6 respectively, and the signal that Hall element is collected processes, secondary coil 7 and Hall element 6 are connected to circuit controller 5 after being electrically connected with secondary coil 3 by connector 8, and 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 current intensity detecting tested cable, magnetic core 1 is separated with magnetic core 2, magnetic core 1 and magnetic core 2 it is respectively put into from the both sides of tested cable, magnetic core 1 is mutual with the tooth-like part of anything of the termination of magnetic core 2 seamless to be engaged, now magnetic core 1 and magnetic core 2 constitute the magnetism gathering rings of Guan Bi, magnetism gathering rings, secondary coil 3 and 7, Hall element 4 and 6 and circuit controller 5 form the double; two Hall current sensor of closed loop.
Magnetic core 1 and the air gap on magnetic core 2 are arranged on the centre position of magnetic core 1 and magnetic core 2, or are 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 set to N number of with the air gap on magnetic core 2, and now the air gap 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 is equal to air gap number.
Magnetic core 1 and magnetic core 2 can respectively half square or half circular configuration, two magnetic cores form hollow square or circular magnetism gathering rings after combining.
Magnetic core 1 is square or circular sub-fraction, and magnetic core 2 is square or circular most, and two magnetic cores form hollow square or circular magnetism gathering rings after combining.
Magnetism gathering rings can also 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.
Detailed description of the invention three
A kind of closed-loop Hall current sensor 30 such as Fig. 3, shown in Fig. 3 a, including magnetism gathering rings, secondary coil 3 and 7, Hall element 4 and 6, and circuit controller 5, described magnetism gathering rings includes the first mutually isolated magnetism gathering rings and the second magnetism gathering rings, described first magnetism gathering rings includes two discrete magnetic cores 101 and magnetic core 102, magnetic core 101 and magnetic core 102 are respectively provided with two terminations, 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 magnetism gathering rings of Guan Bi, first magnetism gathering rings has air gap, described second magnetism gathering rings includes two discrete magnetic cores 201 and magnetic core 202, magnetic core 201 and magnetic core 202 are respectively provided with two terminations, 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 magnetism gathering rings of Guan Bi, 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 on magnetic core 102 and 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 on magnetic core 101 and magnetic core 201 simultaneously, Hall element 4 is symmetrical on magnetism gathering rings with Hall element 6, circuit controller 5 electrically connects with described secondary coil 3 and 7, described Hall element 4 and 6 respectively, and the signal that Hall element is collected processes, secondary coil 7 and Hall element 6 are connected to circuit controller 5 after being electrically connected with secondary coil 3 by connector 8, and wherein Fig. 3 a is the side view of magnetism gathering rings structure in Fig. 3.
Or, the end portion that 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 current intensity detecting tested cable, by magnetic core 101, 201 with magnetic core 102, 202 separately, it is respectively put into magnetic core 101 from the both sides of tested cable, 201 with magnetic core 102, 202, magnetic core 101 is mutual with the tooth-like part of anything of the termination of magnetic core 102 seamless to be engaged, magnetic core 201 is mutual with the tooth-like part of anything of the termination of magnetic core 202 seamless to be engaged, magnetic core 101 constitutes the first magnetism gathering rings of Guan Bi with magnetic core 102, magnetic core 201 constitutes the second magnetism gathering rings of Guan Bi with magnetic core 202, magnetism gathering rings, secondary coil 3 and 7, Hall element 4 and 6 and circuit controller 5 form the double, two Hall closed-loop current sensors of dicyclo.
Magnetic core 101 and the air gap on magnetic core 202 are arranged on the centre position of magnetic core 101 and magnetic core 202, or are arranged on the optional position of magnetic core 101 and magnetic core 202, or are 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;Being distributed N number of air gap on each magnetism gathering rings, the quantity of Hall element is equal to air gap number.
Detailed description of the invention four
As shown in Figure 4, closed-loop Hall current sensor 40 is the closed-loop current sensors of the double; two Hall of a kind of monocycle to a kind of closed-loop Hall current sensor 40, including shell, magnetism gathering rings, circuit board, skeleton, secondary coil, cover plate; Described shell includes shell 1 and shell 2 two parts, described magnetism gathering rings includes magnetic core 4 and magnetic core 9 two parts, described circuit board includes circuit board 11 and circuit board 12, described skeleton includes skeleton 6 and skeleton 7, described secondary coil includes secondary coil 3 and secondary coil 5, and described cover plate includes cover plate 13 and cover plate 14.
Being 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, and 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 it 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 installing.
Relevant position on skeleton 6 and secondary coil 3 is provided with hole 19, Hall element location, and the Hall element 10 on battery lead plate 12 is arranged in hole 19, location; Same, the relevant position on skeleton 7 and secondary coil 5 is provided with hole 20, Hall element location, and the Hall element 8 on battery lead plate 11 is arranged in hole 20, location.
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 to this; Shell 1 and shell 2 seamless connection, be provided with seam on the interface of shell 1 and shell 2 joining place, as shown in shell 2 seam 21, also is provided with seam equally, is not drawn in Fig. 1 on two interfaces of shell 1 with another interface of shell 2; Joining place at shell 1 with shell 2 is additionally provided with fixing hole, and the fixing hole 15 of shell 1 as shown in Figure 1, the fixing hole 16 of shell 2, quantity and the position of fixing hole are arranged as required to, and are not limited to two fixing holes.
Magnetism gathering rings is the square hollow structure similar to shell, a part for magnetic core 4 and magnetic core 9 respectively 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 are respectively provided with two terminations, the structure of each end is dentalation, the dentalation of one end of magnetic core 4 cooperates with the dentalation of magnetic core 9 one end and seamless engages, the dentalation of another end of magnetic core 4 cooperates with the dentalation of another end of magnetic core 9 and seamless engages, the position that magnetic core 4 is seamless with magnetic core 9 to be engaged is positioned at the seam place of shell 1 and shell 2, being provided with air gap on magnetic core 4, its position is corresponding with the hole, location 20 on skeleton 7, magnetic core 9 is provided with air gap, its position is corresponding with the hole, location 19 on skeleton 6, described air gap is symmetric on magnetism gathering rings, the location hole 20 corresponding with gap position is symmetric on magnetism gathering rings with hole 19, location, air gap described in the present embodiment is separately positioned on the centre position of magnetic core 4,9, but is not limited to this.
A part for the described square hollow structure that circuit board 12 is respectively similar to magnetic core 9 to magnetic core 4 with circuit board 11, 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 of secondary coil 3 is welded 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 hole, location 20 on skeleton 7, and the position of Hall element 10 is corresponding with the hole, location 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 circulus.
Detailed description of the invention five
A kind of closed-loop Hall current sensor 50 is as shown in Figure 5, closed-loop Hall current sensor 50 is the closed-loop current sensors of a kind of monocycle list Hall, itself and closed-loop Hall current sensor 40 are different in that, only an air gap is set on magnetic core 4, and magnetic core 9 is not provided with air gap, corresponding magnetic core 9 is also not provided with skeleton and secondary coil, in shell 1, is also not provided with circuit board, namely only one of which air gap, circuit board, skeleton and 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 can also be respectively provided with skeleton and secondary coil on magnetic core 4 with magnetic core 9, is respectively provided with circuit board in shell 1 with shell 2.
Detailed description of the invention six
One of frame mode of magnetism gathering rings 60 is 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, a portion of magnetic core 4 and magnetic core 9 respectively 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 seamless connection of the dentalation of termination 23 and termination 24, the dentalation seamless connection of the dentalation of termination 25 and 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, is disposed therein on a magnetic core; Or the integral multiple that air gap number is 2 of magnetism gathering rings, is separately positioned on two magnetic cores, and now, the air gap of magnetism gathering rings is symmetric on magnetism gathering rings.
Detailed description of the invention seven
The external structure of a kind of closed-loop Hall current sensor such as Fig. 7, shown in Fig. 8, Fig. 7 is the structure 70 during closed-loop Hall current sensor folding, Fig. 8 is the structure 80 during closed-loop Hall current sensor Guan Bi, closed-loop Hall current sensor includes discrete shell 1 assembly and becomes with shell 2 assembly, shell 1 and shell 2 form square hollow structure, shell 1 assembly and shell 2 assembly include 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 hole, location 15 by joining place, 16 and 27, 28 realize seamless connection, dentalation 23, 24 and 25, 26 also realize seamless connection at seam place.
Detailed description of the invention eight
A kind of closed-loop Hall current sensor 90 is as it is shown in figure 9, closed-loop Hall current sensor 90 is the closed-loop current sensors of a kind of dicyclo pair Halls, including shell, magnetism gathering rings, circuit board, skeleton, secondary coil, cover plate; Described shell includes shell 17 and shell 18 two parts, described magnetism gathering rings includes the first magnetism gathering rings and the second magnetism gathering rings, described first magnetism gathering rings includes magnetic core 1a and magnetic core 1b two parts, described second magnetism gathering rings includes magnetic core 2a and magnetic core 2b two parts, described circuit board includes circuit board 21 and circuit board 22, described skeleton includes skeleton 19 and skeleton 20, and described secondary coil includes secondary coil 3 and secondary coil 7, and described cover plate includes cover plate 23 and cover plate 24 two parts.
Magnetic core 1a and 2a, skeleton 19, secondary coil 7, circuit board 21 it 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 insertion hole of Hall element, described insertion hole place is provided with Hall element 6, being provided with connector 8a in the tip position of circuit board 21, cover plate 23 covers on shell 1; Magnetic core 1b and 2b, skeleton 20, secondary coil 3, circuit board 22 it 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 insertion hole of Hall element, described insertion hole place is provided with Hall element 4, being provided with connector 8b in circuit board 21 tip position, cover plate 24 covers on shell 18, and connector 8a and 8b cooperates 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 installing.
Being provided with air gap on the first magnetism gathering rings, its position is corresponding with the insertion hole of the Hall element on skeleton 19; Being provided with air gap on second magnetism gathering rings, its position is corresponding with the insertion hole of the Hall element on skeleton 20, and the first magnetism gathering rings and the gap position on the second magnetism gathering rings are 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 the leading foot direction of Hall element 6 and Hall element 4 is mutually perpendicular to, and skeleton 19,20 is additionally 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 to this; Shell 17 and shell 18 seamless connection, be provided with seam on the interface of shell 17 and shell 18 joining place, and the interface of shell 18 joining place is provided with seam 25,26, and shell 17 also is provided with seam in corresponding position, not shown in FIG.; Joining place at shell 17 with shell 18 is respectively equipped with fixing hole 27,28, and the quantity of fixing hole and position are arranged as required to.
Magnetism gathering rings is the square hollow structure similar to shell, magnetic core 1a and 2a, a part for magnetic core 1b and 2b respectively 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 is respectively provided with two terminations, the structure of each end is dentalation, the dentalation of one end of magnetic core 1a cooperates with the dentalation of magnetic core 1b mono-end and seamless engages, the dentalation of another end of magnetic core 1a cooperates with the dentalation of another end of magnetic core 1b and seamless engages, same, the dentalation at the two ends place of magnetic core 2a and magnetic core 2b cooperates and seamless engagement,Magnetic core 1a and 2a, magnetic core 1b and 2b is seamless engagement position be positioned at the seam place of shell 17,18.
Skeleton 19,20 is internal 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.
Detailed description of the invention nine
The concrete electric connection mode 100 of one such as the closed-loop Hall current sensor that Figure 10, Figure 10 a is detailed description of the invention eight, 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 matches with the connector 8b on circuit board 22, and electrical connection circuit plate 21 and circuit board 22, magnetic core 1a and form magnetism gathering rings 1 after the seamless engagement of magnetic core 1b, magnetic core 2a and form magnetism gathering rings 2 after the seamless engagement of magnetic core 2b; 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 of the Hall element 4 at magnetism gathering rings 2 air gap place is oriented parallel to circuit board 22, and the leading foot of Hall element 4 is connected on Hall keyset 25, and Hall keyset 25 connects circuit board 22.
Hall keyset 25 is the one in flexible circuit board or pcb board.
Above content is in conjunction with concrete/preferred embodiment further description made for the present invention, it is impossible to 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; these embodiments having described that can also be made some replacements or modification by it, 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, including magnetism gathering rings, secondary coil, Hall element, skeleton, circuit board, cover plate and shell, described magnetism gathering rings includes two the first mutually isolated magnetism gathering rings and the second magnetism gathering rings, described skeleton is double-decker, described skeleton is arranged on described first magnetism gathering rings and the second magnetism gathering rings, described magnetism gathering rings has air gap, described Hall element is arranged on described gap position, described secondary coil is looped around on described skeleton, and described circuit board electrically connects with described Hall element, described secondary coil; Described magnetism gathering rings, described secondary coil, described Hall element, described skeleton, described circuit board are arranged in described shell;
It is characterized in that: described shell, described cover plate include discrete two parts respectively, described shell includes the first discrete shell and second housing is engaged togather and forms entirety;
Described first magnetism gathering rings and the second magnetism gathering rings include discrete two parts magnetic core respectively, first magnetic core of described first magnetism gathering rings and the 3rd magnetic core of the second magnetism gathering rings are simultaneously located in described first shell, second magnetic core of described first magnetism gathering rings and the 4th magnetic core of the second magnetism gathering rings are simultaneously located in described second housing, described first magnetic core constitutes described first magnetism gathering rings with described second magnetic core seamless engagement of described joining place of described shell, and described 3rd magnetic core constitutes described second magnetism gathering rings with described 4th magnetic core seamless engagement of described joining place of described shell;
Described discrete cover plate covers respectively on described first shell and described second housing.
2. closed-loop Hall current sensor according to claim 1, it is characterised in that:
Described secondary coil, described skeleton, described circuit board include the part being also respectively provided with described secondary coil, described skeleton, described circuit board in discrete two parts, described first shell and described second housing respectively.
3. closed-loop Hall current sensor according to claim 2, it is characterised in that:
Described first shell and described second housing arrange seam respectively on the rank face of described joining place, the first magnetic core in described first shell and the second magnetic core in second housing engage described seam place is seamless, the 3rd magnetic core in described first shell and the 4th magnetic core in second housing engage described seam place is seamless, and the first circuit board in described first shell electrically connects at described joining place with the second circuit board in second housing.
4. closed-loop Hall current sensor according to claim 1, it is characterised in that: described first magnetic core to described 4th magnetic core is to form with the stacking riveted of lamellar, forms dentalation in described seamless engagement place.
5. closed-loop Hall current sensor according to claim 1, it is characterized in that: described shell is hollow square or circular, described first shell and described second housing are described square or circular parts accordingly, and described first magnetic core to described 4th magnetic core is square with a described or circular corresponding square or circular part.
6. closed-loop Hall current sensor according to claim 1, it is characterised in that: what be provided with described Hall element on described skeleton inserts hole or/and the locating slot of described air gap.
7. closed-loop Hall current sensor according to claim 1, it is characterised in that: described first shell is provided with for realizing the positioner that described shell seamless is connected with the joining place of described second housing.
8. closed-loop Hall current sensor according to claim 1, it is characterised in that: the two ends of described Hall element and described primary coil is welded on described circuit board, and described circuit board arranges leading foot by connector or cable mode.
9. closed-loop Hall current sensor according to claim 1, it is characterised in that: being respectively arranged with N number of air gap on described first magnetism gathering rings and described second magnetism gathering rings, described 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: described Hall element is electrically connected on described circuit board by Hall element keyset.
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