CN209432890U - A kind of high current Hall current sensor minimizing PCB construction - Google Patents

A kind of high current Hall current sensor minimizing PCB construction Download PDF

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Publication number
CN209432890U
CN209432890U CN201822068414.4U CN201822068414U CN209432890U CN 209432890 U CN209432890 U CN 209432890U CN 201822068414 U CN201822068414 U CN 201822068414U CN 209432890 U CN209432890 U CN 209432890U
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CN
China
Prior art keywords
fixed
plate
cylinder
insulation shell
spring
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Expired - Fee Related
Application number
CN201822068414.4U
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Chinese (zh)
Inventor
孙克翔
潘晓芳
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Nanjing New Zhongxu Microelectronics CO Ltd
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Nanjing New Zhongxu Microelectronics CO Ltd
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Priority to CN201822068414.4U priority Critical patent/CN209432890U/en
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Abstract

The utility model relates to a kind of high current Hall current sensors for minimizing PCB construction, including pedestal, insulation shell, magnetic core, Hall element, binding post and two conductive plates, it further include fixed mechanism, fixed mechanism includes fixation kit and two clamp assemblies, fixation kit includes airbag, tracheae, cylinder, gas bar and pulling plate, sealing plate is equipped in cylinder, fixed ring and the first spring, conducting wire is fixed at the central axis of the through-hole of insulation shell by the high current Hall current sensor of the miniaturization PCB construction by fixation kit, and conducting wire is clamped by the clamp assemblies of two sides, so that flowing through magnetic direction of the current direction perpendicular to magnetic core of conducting wire, to improve the measurement accuracy of the Hall current sensor, and then improve the practicability of the equipment.

Description

A kind of high current Hall current sensor minimizing PCB construction
Technical field
The utility model relates to hall device field, in particular to a kind of high current Hall current for minimizing PCB construction Sensor.
Background technique
Hall current sensor is based on magnetic balance type hall principle, according to Hall effect principle, from the control of Hall element Current terminal processed is passed through electric current I, and applies the magnetic field that magnetic field strength is B in the normal direction of Hall element plane, then hanging down Directly in electric and magnetic fields direction (i.e. between Hall output end), a potential will be generated, Hall voltage, size direct ratio are called In the product of control electric current I and magnetic field strength B.Hall current sensor is made of according to Hall effect principle, to Ampere's law It is applied, i.e., generates the magnetic field for being proportional to the electric current around current-carrying conductor, and hall device is used to measure this magnetic field, Therefore, make it possible the non-cpntact measurement of electric current, the size by measuring Hall voltage measures current-carrying conductor electric current indirectly Size, therefore, electric current pass through and have passed through electricity-magnetic-electricity and be dielectrically separated from conversion.
When the electric current that Hall sensor passes through conducting wire between pcb board measures, need for conducting wire to be placed in sensing Device inner hole center, not put as far as possible partially, while conducting wire need pile sensor inner hole completely as far as possible, should not there are gaps, but It is that so, will lead to that conducting wire is excessively thick, is unfavorable for the inner hole across sensor, and when conducting wire is thinner, in measure traverse line electric current When, conducting wire is easily separated from sensor inner hole center, so that deviation occurs in measurement, and then causes existing Hall current sensor real It is reduced with property.
Utility model content
Technical problem to be solved by the utility model is: for overcome the deficiencies in the prior art, providing a kind of miniaturization PCB The high current Hall current sensor of structure.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of high current for minimizing PCB construction Hall current sensor, including pedestal, insulation shell, magnetic core, Hall element, binding post and two conductive plates, the insulation shell Body is fixed on the top of pedestal, and one end of the separate pedestal of the insulation shell is equipped with through-hole, the magnetic core, Hall element and leads Battery plate is arranged in insulation shell, and the shape of the magnetic core is annular, and the magnetic core and through-hole are coaxially disposed, the magnetic core It is equipped with notch close to one end of pedestal, the Hall element is located at indentation, there, and two conductive plates are located at the two of Hall element Side, the binding post are fixed on insulation shell, further include fixed mechanism, and the fixed mechanism includes fixation kit and two folders Component is held, two clamp assemblies are located at the both ends of through-hole;
The fixation kit includes airbag, tracheae, cylinder, gas bar and pulling plate, and the shape of the airbag is annular, the gas The periphery of bag is fixed, and the cylinder is fixed on insulation shell on the inner walls of the via, and the cylinder is connected by tracheae and airbag Logical, one end of the gas bar is arranged in cylinder, and the other end of the gas bar is fixedly connected with pulling plate;
Sealing plate, fixed ring and the first spring are equipped in the cylinder, the periphery of the sealing plate and the inner wall of cylinder are close Envelope connection, the fixed ring are fixed on the inner wall of the opening of cylinder, and the Fixing shrink ring is located on cylinder, the sealing plate With gas bar be fixedly connected, one end of first spring is connect with sealing plate, the other end and fixed ring of first spring Connection, first spring are in compressive state.
Preferably, in order to make conducting wire pass perpendicularly through through-hole, the clamp assemblies include two clamping units, two clampings Unit is located at the two sides of through-hole, and the clamping unit includes pull rod, drag hook, fixed plate, pull rod, clamping plate and second spring, The fixed plate is fixed on insulation shell, and the drag hook is located at the side of the separate through-hole of fixed plate, and the drag hook passes through drawing Bar is connect with Boards wall, and the fixed plate is set on pull rod, the both ends of the second spring respectively with fixed plate and clamping plate Connection, the second spring are in compressive state.
Preferably, the side of the separate pull rod of the clamping plate is equipped with recess, the recess for the ease of clamping conducting wire The shape of vertical cross-section is arc-shaped.
Preferably, the inside of the airbag is equipped with several thermally conductive sheets, and the thermally conductive sheet is circumferential in order to reinforce fixed effect It is evenly distributed on the inside of airbag.
Preferably, the both ends of the pedestal are equipped with screw for the ease of sensor to be fixed in PCB circuit board, The pedestal is set in screw, the pedestal be equipped with the junction of screw and the matched screw thread of screw.
Preferably, the shape of the bottom end of the screw is cone for the ease of punching in PCB circuit board.
The utility model has the beneficial effects that the high current Hall current sensor of the miniaturization PCB construction passes through fixation Conducting wire is fixed at the central axis of the through-hole of insulation shell by component, and is pressed from both sides by the clamp assemblies of two sides to conducting wire It holds, so that magnetic direction of the current direction perpendicular to magnetic core of conducting wire is flowed through, to improve the survey of the Hall current sensor Accuracy of measurement, and then improve the practicability of the equipment.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of the high current Hall current sensor of the miniaturization PCB construction of the utility model;
Fig. 2 is the section view of the insulation shell of the high current Hall current sensor of the miniaturization PCB construction of the utility model Figure;
Fig. 3 is the cross-sectional view of the cylinder of the high current Hall current sensor of the miniaturization PCB construction of the utility model;
In figure: 1. pedestals, 2. insulation shells, 3. magnetic cores, 4. Hall elements, 5. binding posts, 6. conductive plates, 7. airbags, 8. Tracheae, 9. cylinders, 10. gas bars, 11. sealing plates, 12. fixed rings, 13. first springs, 14. pulling plates, 15. drag hooks, 16. is fixed Plate, 17. pull rods, 18. clamping plates, 19. second springs, 20. thermally conductive sheets, 21. screws.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram, Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
As shown in Figs. 1-2, a kind of high current Hall current sensor minimizing PCB construction, including pedestal 1, insulation shell Body 2, magnetic core 3, Hall element 4, binding post 5 and two conductive plates 6, the insulation shell 2 is fixed on the top of pedestal 1, described One end of the separate pedestal 1 of insulation shell 2 is equipped with through-hole, and the magnetic core 3, Hall element 4 and conductive plate 6 are arranged at insulation shell In body 2, the shape of the magnetic core 3 is annular, and the magnetic core 3 is coaxially disposed with through-hole, the one of the close pedestal 1 of the magnetic core 3 End is equipped with notch, and the Hall element 4 is located at indentation, there, and two conductive plates 6 are located at the two sides of Hall element 4, described to connect Terminal 5 is fixed on insulation shell 2, further includes fixed mechanism, and the fixed mechanism includes fixation kit and two clamp assemblies, Two clamp assemblies are located at the both ends of through-hole;
The Hall current sensor is measuring in use, pedestal 1 is fixedly mounted in PCB circuit board, conducting wire is worn The through-hole on insulation shell 2 is crossed, is located at conducting wire at the central axis of through-hole using fixation kit, passes through 2 two sides of insulation shell Clamp assemblies conducting wire is clamped, so that conducting wire is passed perpendicularly through through-hole, and then make the current direction for flowing through conducting wire perpendicular to magnetic The magnetic direction of core 3, so that detection accuracy is improved, it, can be by the electric current of outer lead by magnetic core 3 inside insulation shell 2 It captures on magnetic core 3, is converted into the variation in magnetic field, changes of magnetic field is converted into electricity in the Hall element 4 of 3 indentation, there of magnetic core setting The voltage change captured is transferred on external cabling column 5, outside by buckling by the conductive plate 6 connecting with Hall element 4 The apparatus of connection measurement voltage, can measure the electric current for flowing through 2 through hole of insulation shell according to voltage value on portion's binding post 5 Value when due to measurement, makes conducting wire be located at the center location of through-hole, and so that current direction is hung down by clamp assemblies using fixation kit Directly in magnetic direction, and then improve the detection accuracy of the Hall current sensor.
As shown in figures 1 and 3, the fixation kit includes airbag 7, tracheae 8, cylinder 9, gas bar 10 and pulling plate 14, described The shape of airbag 7 is annular, and the periphery of the airbag 7 is fixed on the inner walls of the via, and the cylinder 9 is fixed on insulation shell 2 On, the cylinder 9 is connected to by tracheae 8 with airbag 7, one end setting of the gas bar 10 in cylinder 9, the gas bar 10 it is another One end is fixedly connected with pulling plate 14;
Sealing plate 11, fixed ring 12 and the first spring 13, the periphery of the sealing plate 11 and cylinder are equipped in the cylinder 9 9 inner wall is tightly connected, and on the inner wall for the opening that the fixed ring 12 is fixed on cylinder 9, the fixed ring 12 is set in gas On cylinder 9, the sealing plate 11 and gas bar 10 be fixedly connected, one end of first spring 13 is connect with sealing plate 11, described The other end of first spring 13 is connect with fixed ring 12, and first spring 13 is in compressive state.
When conducting wire is fixed, bar 10 is taken offence far from the bottom movement in cylinder 9 by 14 band of pulling plate first, thus Make sealing plate 11 to the external mobile of cylinder 9, in cylinder 9, the steady movement of gas bar 10 is realized by fixed ring 12, is convenient for simultaneously The position of the first spring 13 is fixed, sealing plate 11 after movement, compresses the first spring 13, while making airbag to fixed ring 12 Air in 7 is entered in cylinder 9 by tracheae 8, and then increases the internal diameter of airbag 7, and conducting wire is then passed through to the airbag 7 of annular Afterwards, pulling plate 14 is unclamped, compressed spring is to restore deformation, pushes bottom of the sealing plate 11 into cylinder 9 mobile, to make gas Air in cylinder 9 is delivered in airbag 7 by tracheae 8, and airbag 7 expands, since the periphery of airbag 7 is fixed on the inner wall of through-hole On, so that airbag 7 be made to expand inwardly, conducting wire is squeezed, and then conducting wire is fixed on to the center location of the through-hole of insulation shell 2, Improve current measurement precision.
As shown in Figure 1, the clamp assemblies include two clamping units, two clamping units are located at the two of through-hole Side, the clamping unit include pull rod 17, drag hook 15, fixed plate 16, pull rod 17, clamping plate 18 and second spring 19, the fixation Plate 16 is fixed on insulation shell 2, and the drag hook 15 is located at the side of the separate through-hole of fixed plate 16, and the drag hook 15 passes through drawing Bar 17 is fixedly connected with clamping plate 18, and the fixed plate 16 is set on pull rod 17, and the both ends of the second spring 19 are respectively and solid Fixed board 16 and clamping plate 18 connect, and the second spring 19 is in compressive state.
After the position to conducting wire is fixed, clamp assemblies are operated, the drag hook 15 in the clamping unit of two sides is pulled, led to Crossing pull rod 17 drives clamping plate 18 along the axis of pull rod 17 far from through-hole, so that two clamping plates 18 are separate, while clamping plate 18 Second spring 19 is compressed, after placing conducting wire between two clamping plates 18, unclamps drag hook 15, second spring 19 compressed at this time is Restoring deformation, close movement at the axis of Xiang Tongkong, conducting wire is clamped in the position being overlapped with the axis of through-hole by two clamping plates 18, To make conducting wire perpendicular to insulation shell 2, and then make the current direction flowed through in conducting wire perpendicular to magnetic magnetic direction, into one Step improves detection accuracy.
Preferably, the side of the separate pull rod 17 of the clamping plate 18 is equipped with recess, described recessed for the ease of clamping conducting wire The shape of the vertical cross-section of mouth is arc-shaped.By the arc-shaped recess of setting, it is respectively positioned in recess convenient for the two sides of conducting wire, with Fixed clamp conducting wire.
Preferably, in order to reinforce fixed effect, the inside of the airbag 7 is equipped with several thermally conductive sheets 20, the thermally conductive sheet The 20 circumferential insides for being evenly distributed on airbag 7.After inflation, 20 guiding line of thermally conductive sheet is close to movement, since conducting wire is powered for airbag 7 Electric current is flowed through, heat is generated, thermally conductive sheet 20 absorbs heat, transfers heat to the air in airbag 7, and then keep air heats swollen It is swollen, so that airbag 7 further be made to expand, strengthen the fixed effect to conducting wire.
Preferably, the both ends of the pedestal 1 are equipped with screw for the ease of sensor to be fixed in PCB circuit board 21, the pedestal 1 is set on screw 21, the pedestal 1 be equipped with the junction of screw 21 and the matched screw thread of screw 21. When being installed, by being punched in PCB circuit board, screw 21 rotates through mounting hole, can consolidate to pedestal 1 It is fixed, sensor is mounted in PCB circuit board to facilitate.
Preferably, the shape of the bottom end of the screw 21 is cone for the ease of punching in PCB circuit board.It adopts With the design of cone, the size of the bottom end of screw 21 is reduced, so that screw 21 be facilitated to pass through the mounting hole in PCB circuit board Carry out the fixed installation of pedestal 1.
The Hall current sensor is in use, pulling pulling plate 14 is incited somebody to action so that the air in airbag 7 enters in cylinder 9 first After conducting wire passes through the inside of airbag 7, pulling plate 14 is unclamped, the first spring 13 pushes bottom of the sealing plate 11 into cylinder 9 is close to move It is dynamic, so that 7 inflation of airbag, squeezes conducting wire, conducting wire is fixed at the central axis of through-hole, it is then single using two clampings Member clamps conducting wire from two sides, so that the direction of conducting wire is fixed, conducting wire passes perpendicularly through through-hole, so that current direction hangs down Directly in magnetic direction, to improve the detection accuracy of the sensor.
Compared with prior art, the high current Hall current sensor of the miniaturization PCB construction will be led by fixation kit Line is fixed at the central axis of the through-hole of insulation shell 2, and is clamped by the clamp assemblies of two sides to conducting wire, so that stream Magnetic direction of the current direction perpendicular to magnetic core 3 of conducting wire is crossed, so that the measurement accuracy of the Hall current sensor is improved, into And improve the practicability of the equipment.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims Property range.

Claims (6)

1. a kind of high current Hall current sensor for minimizing PCB construction, including pedestal (1), insulation shell (2), magnetic core (3), Hall element (4), binding post (5) and two conductive plates (6), the insulation shell (2) are fixed on the top of pedestal (1), One end of the separate pedestal (1) of the insulation shell (2) is equipped with through-hole, the magnetic core (3), Hall element (4) and conductive plate (6) It is arranged in insulation shell (2), the shape of the magnetic core (3) is annular, and the magnetic core (3) and through-hole are coaxially disposed, described One end of the close pedestal (1) of magnetic core (3) is equipped with notch, and the Hall element (4) is located at indentation, there, two conductive plates (6) point Not Wei Yu Hall element (4) two sides, the binding post (5) is fixed on insulation shell (2), feature with further include solid Determine mechanism, the fixed mechanism includes fixation kit and two clamp assemblies, and two clamp assemblies are located at the both ends of through-hole;
The fixation kit includes airbag (7), tracheae (8), cylinder (9), gas bar (10) and pulling plate (14), the airbag (7) Shape is annular, and the periphery of the airbag (7) is fixed on the inner walls of the via, and the cylinder (9) is fixed on insulation shell (2) On, the cylinder (9) is connected to by tracheae (8) with airbag (7), and one end setting of the gas bar (10) is described in cylinder (9) The other end of gas bar (10) is fixedly connected with pulling plate (14);
Sealing plate (11), fixed ring (12) and the first spring (13), the periphery of the sealing plate (11) are equipped in the cylinder (9) It is tightly connected with the inner wall of cylinder (9), on the inner wall for the opening that the fixed ring (12) is fixed on cylinder (9), the fixation Ring (12) is set on cylinder (9), the sealing plate (11) and gas bar (10) be fixedly connected, the one of first spring (13) End is connect with sealing plate (11), and the other end of first spring (13) is connect with fixed ring (12), first spring (13) In compressive state.
2. the high current Hall current sensor of miniaturization PCB construction as described in claim 1, which is characterized in that the folder Holding component includes two clamping units, and two clamping units are located at the two sides of through-hole, and the clamping unit includes pull rod (17), drag hook (15), fixed plate (16), clamping plate (18) and second spring (19), the fixed plate (16) are fixed on insulation shell (2) on, the drag hook (15) is located at the side of the separate through-hole of fixed plate (16), and the drag hook (15) passes through pull rod (17) and folder Plate (18) is fixedly connected, and the fixed plate (16) is set on pull rod (17), and the both ends of the second spring (19) are respectively and solid Fixed board (16) and clamping plate (18) connection, the second spring (19) are in compressive state.
3. the high current Hall current sensor of miniaturization PCB construction as claimed in claim 2, which is characterized in that the folder The side of the separate pull rod (17) of plate (18) is equipped with recess, and the shape of the vertical cross-section of the recess is arc-shaped.
4. the high current Hall current sensor of miniaturization PCB construction as described in claim 1, which is characterized in that the gas The inside of bag (7) is equipped with several thermally conductive sheets (20), and the thermally conductive sheet (20) is circumferentially evenly distributed on the inside of airbag (7).
5. the high current Hall current sensor of miniaturization PCB construction as described in claim 1, which is characterized in that the bottom Seat (1) both ends be equipped with screw (21), the pedestal (1) is set on screw (21), the pedestal (1) with screw (21) Junction be equipped with and screw (21) matched screw thread.
6. the high current Hall current sensor of miniaturization PCB construction as claimed in claim 5, which is characterized in that the spiral shell The shape of the bottom end of silk (21) is cone.
CN201822068414.4U 2018-12-10 2018-12-10 A kind of high current Hall current sensor minimizing PCB construction Expired - Fee Related CN209432890U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822068414.4U CN209432890U (en) 2018-12-10 2018-12-10 A kind of high current Hall current sensor minimizing PCB construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822068414.4U CN209432890U (en) 2018-12-10 2018-12-10 A kind of high current Hall current sensor minimizing PCB construction

Publications (1)

Publication Number Publication Date
CN209432890U true CN209432890U (en) 2019-09-24

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111443229A (en) * 2020-04-17 2020-07-24 南京新捷中旭微电子有限公司 Hall current sensor with wire positioning function
CN111965449A (en) * 2020-08-05 2020-11-20 安徽省中测电子科技有限公司 New forms of energy rifle function simulation testing arrangement that charges

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111443229A (en) * 2020-04-17 2020-07-24 南京新捷中旭微电子有限公司 Hall current sensor with wire positioning function
CN111443229B (en) * 2020-04-17 2022-03-04 南京新捷中旭微电子有限公司 Hall current sensor with wire positioning function
CN111965449A (en) * 2020-08-05 2020-11-20 安徽省中测电子科技有限公司 New forms of energy rifle function simulation testing arrangement that charges

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190924

CF01 Termination of patent right due to non-payment of annual fee