CN207318575U - A kind of dot matrix open loop large current sensor - Google Patents
A kind of dot matrix open loop large current sensor Download PDFInfo
- Publication number
- CN207318575U CN207318575U CN201721376460.XU CN201721376460U CN207318575U CN 207318575 U CN207318575 U CN 207318575U CN 201721376460 U CN201721376460 U CN 201721376460U CN 207318575 U CN207318575 U CN 207318575U
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- Prior art keywords
- circuit board
- shell
- pcb
- printed circuit
- current sensor
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Abstract
The utility model discloses a kind of dot matrix open loop large current sensor, including shell, the current sensor uses magnetic field distribution model of the current carrying conductor for long straight conductor, the shell is shielding shell, the shell includes the base that both sides are equipped with the first fixing groove, the shell is hollow-core construction, the shell is internally provided with circular magnetic core, some openings are symmetrically equipped with the magnetic core, some openings form air gap, some openings are respectively inserted with Hall element, some Hall elements are respectively connected with printed circuit board (PCB), the printed circuit board (PCB) is the circular circuit board equipped with mesoporous, the printed circuit board (PCB) is arranged at the side of the magnetic core.Beneficial effect：The utility model linearity is good, and dynamic range is big, and reaction speed is fast, its is simple in structure and more stablizes, while also has the characteristics that small, light weight, cheap, there is larger use value in industrial circle.
Description
Technical field
A kind of current sensor is the utility model is related to, it particularly relates to a kind of dot matrix open loop large current sensor.
Background technology
Open loop Hall current sensor refers to be based on Hall direct amplifier system operation principle, i.e., when primary current IP flows through a root long
During conducting wire, a magnetic field will be produced around conducting wire, the size in this magnetic field is directly proportional to the electric current for flowing through conducting wire, the magnetic field of generation
It is gathered in magnet ring, is measured by hall device in magnet ring air gap and amplify output, its output voltage Vs accurately reflects
Primary current Ip and the processing for passing through special circuit are extensive for the detecting element of primary current change, Hall current sensor
Applied to frequency converter, inverter, ups power, inverter type welder, electrolysis plating, numerically-controlled machine tool, microcomputer detecting system,
In grid monitoring system and the every field for needing isolation detection Current Voltage.But existing open-loop current sensor is due to air gap
Non-linear and internal structure the unstability of iron core, causes accuracy not high, dynamic range is small, and reaction speed is slow.
The problem of in correlation technique, not yet propose effective solution at present.
Utility model content
The problem of in correlation technique, the utility model proposes a kind of dot matrix open loop large current sensor, to overcome
Above-mentioned technical problem present in existing correlation technique.
What the technical solution of the utility model was realized in：
A kind of dot matrix open loop large current sensor, including shell, the current sensor use a current carrying conductor for
The magnetic field distribution model of long straight conductor, the shell are shielding shell, and the shell includes the bottom that both sides are equipped with the first fixing groove
Seat, the shell are hollow-core construction, and the shell is internally provided with circular magnetic core, some open symmetrically is equipped with the magnetic core
Mouthful, some openings form air gap, and some openings connect inserted with Hall element, some Hall elements respectively
Printed circuit board (PCB) is connected to, the printed circuit board (PCB) is the circular circuit board equipped with mesoporous, and the printed circuit board (PCB) is arranged at described
The side of magnetic core, the diameter of the printed circuit board (PCB) and the magnetic core match, and the inner side of the shell is set equipped with some middle parts
There is the connecting pole of through hole, the side of the printed circuit board (PCB) is equipped with the connecting pin of some settings corresponding with the connecting pole, if
It is dry to be fixedly connected one by one by screw between the connecting pin and some connecting poles, the accommodating chamber two bottom sides of the shell
Some stationary barriers for being used to fix the printed circuit board (PCB) and the magnetic core are respectively equipped with, both sides are correspondingly arranged some described
The second fixing groove is formed between stationary barrier, the center of some Hall elements is interspersed with a current carrying conductor.
Further, the current sensor is the 16 dot matrix open loop large current sensors of rated current 3KA.
Further, the circuit of current sensor is set on the printed circuit board, and leaves the corresponding Hall member
The connecting hole of part, some Hall elements are welded on corresponding connecting hole on the printed circuit board.
Further, wire connection terminal one and wire connection terminal two are also welded with the printed circuit board (PCB).
Further, the radius of the Hall element is 2Rmin.
Further, the bottom plate of the fixing groove is equipped with mounting hole.
The utility model is by using the magnetic field distribution model that a current carrying conductor is long straight conductor, when the Hall of use
When number of elements is enough, some Hall elements are evenly distributed on the magnetic core equipped with some openings and are connected with printing electricity
Road plate, 16 designed dot matrix open loop TV university flow sensors are to factors such as the shape of cross section of a current carrying conductor, change in location
Insensitive, extraneous neighbour's phase current influence is smaller, and negligible cloth is disregarded, and has the linearity good, dynamic range is big and reaction speed is fast
The characteristics of, by being fixedly connected between printed circuit board (PCB) and shell by screw and being fixed on printing electricity in being internally provided with for shell
Second fixing groove of road plate and magnetic core, can make the structure of current sensor simple and also have volume while more stablizing
Small, light weight, it is cheap the characteristics of, have larger use value in industrial circle.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, drawings in the following description are only the utility model
Some embodiments, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is sectional view and the decomposition of a kind of dot matrix open loop large current sensor according to the utility model embodiment
Figure；
Fig. 2 is the structure diagram according to a kind of dot matrix open loop large current sensor of the utility model embodiment；
Fig. 3 is the front view according to a kind of dot matrix open loop large current sensor of the utility model embodiment.
In figure：
1st, shell；2nd, a current carrying conductor；3rd, the first fixing groove；4th, base；5th, magnetic core；6th, it is open；7th, Hall element；8、
Printed circuit board (PCB)；9th, connecting pole；10th, connecting pin；11st, screw；12nd, stationary barrier；13rd, the second fixing groove；14th, connecting hole；15、
Wire connection terminal one；16th, wire connection terminal two；17th, mounting hole.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art's all other embodiments obtained, all belong to
In the scope of the utility model protection.
A kind of embodiment according to the present utility model, there is provided dot matrix open loop large current sensor.
As shown in Figs. 1-3, according to a kind of dot matrix open loop large current sensor of the utility model embodiment, including shell
1, the current sensor uses magnetic field distribution model of the current carrying conductor 2 for long straight conductor, and the shell 1 is outer for shielding
Shell, the shell 1 include the base 4 that both sides are equipped with the first fixing groove 3, and the shell 1 is hollow-core construction, the shell 1 it is interior
Portion is equipped with circular magnetic core 5, and some openings 6 are symmetrically equipped with the magnetic core 5, and some openings 6 form air gap, Ruo Gansuo
State at opening 6 respectively inserted with Hall element 7, some Hall elements 7 are respectively connected with printed circuit board (PCB) 8, the printing electricity
Road plate 8 is the circular circuit board equipped with mesoporous, and the printed circuit board (PCB) 8 is arranged at the side of the magnetic core 5, the printed circuit
Plate 8 and the diameter of the magnetic core 5 match, and the inner side of the shell 1 is equipped with the connecting pole 9 that some middle parts are equipped with through hole, described
The side of printed circuit board (PCB) 8 is equipped with some connecting pins 10 with the 9 corresponding setting of connecting pole, some connecting pins 10 with
It is fixedly connected one by one by screw 11 between some connecting poles 9, if the accommodating chamber two bottom sides of the shell 1 are respectively equipped with
Do the stationary barrier 12 for fixing the printed circuit board (PCB) 8 and the magnetic core 5, some fixations that both sides are correspondingly arranged every
The second fixing groove 13 is formed between plate 12, the center of some Hall elements 7 is interspersed with a current carrying conductor 2.
In addition, in one embodiment, the 16 dot matrix open loop high currents that the current sensor is rated current 3KA sense
Device.
In addition, in one embodiment, the circuit of current sensor is set on the printed circuit board 8, and leave corresponding
The Hall element 7 connecting hole 14, some Hall elements 7 are welded on the corresponding connection on the printed circuit board (PCB) 8
On hole 14.
In addition, in one embodiment, wire connection terminal 1 and wire connection terminal two are also welded with the printed circuit board (PCB) 8
16。
In addition, in one embodiment, the radius of the Hall element 7 is 2Rmin.
In addition, in one embodiment, the bottom plate of the fixing groove 3 is equipped with mounting hole 17.
In conclusion by means of the above-mentioned technical proposal of the utility model, the utility model is led by using a current-carrying
Line 2 is the magnetic field distribution model of long straight conductor, when 7 quantity of Hall element of use is enough, some Hall elements 7 are equal
It is even to be distributed in equipped with the magnetic core 5 at some openings 6 and being connected with printed circuit board (PCB) 8,16 designed dot matrix open loop TV university streams
Sensor is insensitive to factors such as the shape of cross section of a current carrying conductor 2, change in location, extraneous neighbour's phase current influence it is smaller,
Negligible cloth is disregarded, and has the characteristics of linearity is good, and dynamic range is big and reaction speed is fast, passes through printed circuit board (PCB) 8 and shell 1
Between be fixedly connected by screw 11 and be fixed on the second fixing groove of printed circuit board (PCB) 8 and magnetic core in being internally provided with for shell 1
13, the structure of current sensor can be made simple and also there is small, light weight, cheap spy while more stablizing
Point, there is larger use value in industrial circle.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on, should be included in the utility model
Protection domain within.
Claims (6)
1. a kind of dot matrix open loop large current sensor, including shell (1), it is characterised in that the current sensor uses one
Secondary current carrying conductor (2) is the magnetic field distribution model of long straight conductor, and the shell (1) is shielding shell, and the shell (1) includes two
Side is equipped with the base (4) of the first fixing groove (3), and the shell (1) is hollow-core construction, and the shell (1) is internally provided with circle
Magnetic core (5), some openings (6) is symmetrically equipped with the magnetic core (5), some openings (6) form air gaps, some described
(6) place be open respectively inserted with Hall element (7), some Hall elements (7) are respectively connected with printed circuit board (PCB) (8), described
Printed circuit board (PCB) (8) is the circular circuit board equipped with mesoporous, and the printed circuit board (PCB) (8) is arranged at the side of the magnetic core (5),
The printed circuit board (PCB) (8) and the diameter of the magnetic core (5) match, and the inner side of the shell (1) is equipped with equipped with some middle parts
The connecting pole (9) of through hole, the side of the printed circuit board (PCB) (8) are equipped with the company of some settings corresponding with the connecting pole (9)
Outbound (10), is fixedly connected, institute by screw (11) one by one between some connecting pins (10) and some connecting poles (9)
The accommodating chamber two bottom sides for stating shell (1) are respectively equipped with and some are used to fix the printed circuit board (PCB) (8) and the magnetic core (5)
Stationary barrier (12), forms the second fixing groove (13) between some stationary barriers (12) that both sides are correspondingly arranged, if described
The center for doing the Hall element (7) is interspersed with a current carrying conductor (2).
A kind of 2. dot matrix open loop large current sensor according to claim 1, it is characterised in that the current sensor
For the 16 dot matrix open loop large current sensors of rated current 3KA.
A kind of 3. dot matrix open loop large current sensor according to claim 1, it is characterised in that the printed circuit board (PCB)
(8) circuit of current sensor is set on, and leaves the connecting hole (14) of the corresponding Hall element (7), it is some it is described suddenly
You are welded on the corresponding connecting hole (14) on the printed circuit board (PCB) (8) element (7).
A kind of 4. dot matrix open loop large current sensor according to claim 3, it is characterised in that the printed circuit board (PCB)
(8) wire connection terminal one (15) and wire connection terminal two (16) are also welded with.
A kind of 5. dot matrix open loop large current sensor according to claim 4, it is characterised in that the Hall element
(7) radius is 2Rmin.
A kind of 6. dot matrix open loop large current sensor according to claim 1, it is characterised in that the fixing groove (3)
Bottom plate be equipped with mounting hole (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721376460.XU CN207318575U (en) | 2017-10-24 | 2017-10-24 | A kind of dot matrix open loop large current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721376460.XU CN207318575U (en) | 2017-10-24 | 2017-10-24 | A kind of dot matrix open loop large current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207318575U true CN207318575U (en) | 2018-05-04 |
Family
ID=62382429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721376460.XU Expired - Fee Related CN207318575U (en) | 2017-10-24 | 2017-10-24 | A kind of dot matrix open loop large current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207318575U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963484A (en) * | 2018-08-08 | 2018-12-07 | 深圳威迈斯电源有限公司 | High current air guide and Vehicular charger with the air guide |
-
2017
- 2017-10-24 CN CN201721376460.XU patent/CN207318575U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963484A (en) * | 2018-08-08 | 2018-12-07 | 深圳威迈斯电源有限公司 | High current air guide and Vehicular charger with the air guide |
| CN108963484B (en) * | 2018-08-08 | 2024-01-26 | 深圳威迈斯新能源股份有限公司 | Heavy current guide member and vehicle-mounted charger with same |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180504 Termination date: 20211024 |
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| CF01 | Termination of patent right due to non-payment of annual fee |