CN208736925U - A kind of closed-loop current sensors - Google Patents
A kind of closed-loop current sensors Download PDFInfo
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- CN208736925U CN208736925U CN201821370595.XU CN201821370595U CN208736925U CN 208736925 U CN208736925 U CN 208736925U CN 201821370595 U CN201821370595 U CN 201821370595U CN 208736925 U CN208736925 U CN 208736925U
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Abstract
The utility model discloses a kind of closed-loop current sensors, including the first magnetic conduction core, the second magnetic conduction core, the first winding coil, the second winding coil, field sensing component and circuit board；The both ends of first magnetic conduction core are respectively protruding into and pass through the first winding coil and the second winding coil；The both ends of second magnetic conduction core are respectively protruding into and pass through the first winding coil and the second winding coil；First magnetic conduction core and the second magnetic conduction core and the first winding coil and the second winding coil form a closed annular；Field sensing component is fixedly installed on the circuit board, and circuit board is fixed on the same side of the first winding coil and the second winding coil, and field sensing component is located between two ends of the first magnetic conduction core or between two ends of the second magnetic conduction core.Two sheet magnetic conduction cores of the closed-loop current sensors are formed to inserting structure, and structure is simple, and manufacture craft is simple, reduces cost, while improving the performance of closed-loop current sensors.
Description
Technical field
The utility model relates to current sensing techniques field, a kind of particularly closed-loop current sensors.
Background technique
A kind of detection device when sensor can detect the relevant information of tested equipment, according to certain rules transforms electrical signals or
The information of other required forms exports, and is required with transmission, processing, storage, display, record and the control etc. that meet information.Electric current
Sensor can be divided into open-loop current sensor and closed-loop current sensors.
Currently, iron core used in closed-loop current sensors in the market is usually punching press stacking technique or multilaminate coiled technique
It is made, the more complex and consumptive material of production is more, higher cost.
Utility model content
In order to solve the above technical problems, the utility model designs a kind of closed-loop current sensors, and the lower production of cost is simple,
Performance of current sensors can be improved again simultaneously.The utility model is realized using following scheme:
A kind of closed-loop current sensors, including the first magnetic conduction core, the second magnetic conduction core, the first winding coil, the second winding wire
Circle, field sensing component and circuit board；
One end of the first magnetic conduction core is extended through first winding coil, the other end of the first magnetic conduction core
It is extended through second winding coil；
One end of the second magnetic conduction core is extended through first winding coil, the other end of the second magnetic conduction core
It is extended through second winding coil；
The first magnetic conduction core and the second magnetic conduction core and first winding coil and the second winding coil form one
A closed annular；
The field sensing component is fixedly installed on the circuit board, and the circuit board is fixed on first winding wire
The same side of circle and second winding coil, the field sensing component are located between two ends of the first magnetic conduction core
Or between two ends of the second magnetic conduction core.
Preferably, the first magnetic conduction core is slightly less than the second magnetic conduction core, and the both ends of the first magnetic conduction core are located at institute
It states in the first magnetic conduction core and the first coil winding and the frame of second coil winding formation.
Preferably, the first magnetic conduction core tool is there are two flanging, and a flanging of the first magnetic conduction core passes through described the
Another flanging of one winding coil, the first magnetic conduction core passes through second winding coil；
There are two flanging, a flangings of the second magnetic conduction core to pass through first winding wire for the second magnetic conduction core tool
Another flanging of circle, the second magnetic conduction core passes through second winding coil；
Two flangings of the first magnetic conduction core are located between two flangings of the second magnetic conduction core.
It is highly preferred that the first magnetic conduction core is U-shaped, the second magnetic conduction core is U-shaped.
It is highly preferred that the end of two flangings of the first magnetic conduction core protrudes from first winding coil and described
Two ends of the end of two winding coils, the second magnetic conduction core protrude from first winding coil and second winding
Overhang.
It is highly preferred that the circuit board is set to one end of the flanging opening of the first magnetic conduction core, the magnetic field detection
Element is located between the end of two flangings of the first magnetic conduction core.
Preferably, the field sensing component is selected from magnetoresistance device, Hall element or fluxgate induction pieces.
The closed-loop current sensors of the utility model change existing core design, using two sheet magnetic conduction core shapes
Pairs of inserting structure, structure is simple, and manufacture craft is simple, reduces cost, improves production efficiency, while improving closed loop current biography
The performance of sensor.
Detailed description of the invention
The structural schematic diagram of the closed-loop current sensors of Fig. 1 the utility model
The cross-sectional view of the closed-loop current sensors of Fig. 2 the utility model
The decomposition view of the closed-loop current sensors of Fig. 3 the utility model
In figure, 1 first magnetic conduction core, one end of 11 first magnetic conduction cores, the other end of 12 first magnetic conduction cores, 2 second magnetic conduction cores,
One end of 21 second magnetic conduction cores, 3 first winding coil of the other end of 22 second magnetic conduction cores, 4 second winding coils, 5 magnetic field detections
Element, 6 circuit boards
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As depicted in figs. 1 and 2, be the utility model closed-loop current sensors structural schematic diagram.
The closed-loop current sensors include the first magnetic conduction core 1, the second magnetic conduction core 2, the first winding coil 3, the second winding wire
Circle 4, field sensing component 5 and circuit board 6.
Wherein, the first magnetic conduction core 1 is laminated structure, and one end 11 of the first magnetic conduction core 1 is extended through the first winding coil
3, the other end 12 of the first magnetic conduction core 1 is extended through the second winding coil 4；Second magnetic conduction core 2 is all laminated structure, and second leads
One end 21 of magnetic core 2 is extended through the first winding coil 3, and the other end 22 of the second magnetic conduction core 2 is extended through the second winding
Coil 4, the first magnetic conduction core 1 and the second magnetic conduction core 2 are to connect slotting form with the first winding coil 3 and the second winding coil 4
Form a closed ring structure.Two pieces of magnetic conduction cores are that permeability magnetic material is made, such as iron plate, nickel sheet, two pieces of magnetic conduction cores pair
The magnetic core of inserting structure formation Hall current sensor, the first winding coil 3 and the second winding coil 4 that two pieces of magnetic conduction cores pass through,
The respectively primary current and bucking coil of closed-loop current sensors.Field sensing component is fixedly installed on circuit board, magnetic field
Detecting element can hinder device, Hall element or fluxgate for highly sensitive magnetic and incude IC etc., have control mould on circuit board 6
Block, operational amplification circuit etc., is electrically connected with field sensing component and bucking coil respectively.Circuit board 6 is fixedly installed on first
The same side of winding coil 3 and the second winding coil 4, and field sensing component be located at the first magnetic conduction core 1 two ends it
Between or two ends of the second magnetic conduction core 2 between.
In this scenario, the first magnetic conduction core 1 and the second magnetic conduction core 2 form a closed circuit, due to the first winding or
The influence of the electric current of second winding coil, generates magnetic field in winding coil, and the first magnetic conduction core 1 and the second magnetic conduction in-core form electricity
Road is flowed back to, the field sensing component energy between two ends of the first magnetic conduction core or between two ends of the second magnetic conduction core
The voltage between two ends of the first magnetic conduction core or between two ends of the second magnetic conduction core is enough sensed, then and by circuit board
The electric current in bucking coil is adjusted, forms closed-loop current sensors.The closed-loop current sensors change existing iron core
Design, structure is simple, and manufacture craft is simple, reduces process costs, while improving the performance of closed-loop current sensors.
Further, the size shape of 1 to the second magnetic conduction core 2 of the first magnetic conduction core is smaller, the first magnetic conduction core 1 and the second magnetic conduction
Core to it is slotting when, two ends 11 and 12 of the first magnetic conduction core 1 are respectively positioned on the second magnetic conduction core 2 and first coil winding 3 and the second line
It encloses in the mount structure that winding 4 is formed.
Specifically, tool is made there are two the structure of flanging in the first magnetic conduction core 1 and the second magnetic conduction core 2, it can be half frame shape
" Contraband " structure, or "u"-shaped, or have be open round mount structure or other tools there are two the structure of flanging, first
One flanging of magnetic conduction core 1 passes through the first winding coil 3, another flanging of the first magnetic conduction core passes through the second winding coil 4, the
One flanging of two magnetic conduction cores 2 passes through the first winding coil 3, another flanging of the second magnetic conduction core 2 passes through the second winding coil
4, two flangings of the first magnetic conduction core are respectively positioned between two flangings of the second magnetic conduction core 2, so that two of the first magnetic conduction core 1 are held
Portion is respectively positioned in the mount structure that the second magnetic conduction core 2 and the first winding coil 3 and the second winding coil 4 are formed.
Further, the end of two flangings of the first magnetic conduction core 1 protrudes from the first winding coil 3 and the second winding wire
The end positioned at the same side of circle 4, and the end of two flangings of the second magnetic conduction core 2 protrudes from the first winding coil 3 and the
The end positioned at the other side of two winding coils 4.Wherein, the setting of circuit board 6, the flanging that can be located at the first magnetic conduction core 1 are opened
One end of mouth, also can be set one end with the flanging of the second magnetic conduction core 2 opening, and field sensing component will be located at the first magnetic conduction core
Between the end of 1 two flangings or between the end of two flangings of the second magnetic conduction core 2.In the present embodiment preferably first
Between the end of two flangings of magnetic conduction core 1, field sensing component is located at the inner position of entire annular, and magnetic field leakage field is few,
Magnetic field induction is more sensitive.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
It is subject to the protection scope in claims.
Claims (7)
1. a kind of closed-loop current sensors, which is characterized in that including the first magnetic conduction core (1), the second magnetic conduction core (2), the first winding
Coil (3), the second winding coil (4), field sensing component (5) and circuit board (6)；
One end of the first magnetic conduction core (1) is extended through first winding coil (3), the first magnetic conduction core (1)
The other end is extended through second winding coil (4)；
One end of the second magnetic conduction core (2) is extended through first winding coil (3), the second magnetic conduction core (2)
The other end is extended through second winding coil (4)；
The first magnetic conduction core (1) and the second magnetic conduction core (2) and first winding coil (3) and the second winding coil
(4) a closed annular is formed；
The field sensing component (5) is fixedly installed on the circuit board (6), and the circuit board (6) is fixed on described first
The same side of winding coil (3) and second winding coil (4), the field sensing component (5) are located at first magnetic conduction
Between two ends of core (1) or between two ends of the second magnetic conduction core (2).
2. closed-loop current sensors according to claim 1, which is characterized in that the first magnetic conduction core (1) is slightly less than institute
The second magnetic conduction core (2) is stated, the both ends of the first magnetic conduction core (1) are located at the first magnetic conduction core (1) and first winding wire
In the frame that circle and the second winding coil are formed.
3. closed-loop current sensors according to claim 1, which is characterized in that there are two the first magnetic conduction core (1) tools
Flanging, a flanging of the first magnetic conduction core (1) pass through first winding coil (3), the first magnetic conduction core (1) it is another
One flanging passes through second winding coil (4)；
There are two flanging, a flangings of the second magnetic conduction core (2) to pass through first winding for second magnetic conduction core (2) tool
Another flanging of coil (3), the second magnetic conduction core (2) passes through second winding coil (4)；
Two flangings of the first magnetic conduction core (1) are located between two flangings of the second magnetic conduction core (2).
4. closed-loop current sensors according to claim 3, which is characterized in that the first magnetic conduction core (1) is U-shaped, institute
Stating the second magnetic conduction core (2) is U-shaped.
5. closed-loop current sensors according to claim 3, which is characterized in that two foldings of the first magnetic conduction core (1)
The end on side protrudes from the end of first winding coil (3) and second winding coil (4), the second magnetic conduction core
(2) two ends protrude from the end of first winding coil (3) and second winding coil (4).
6. closed-loop current sensors according to claim 5, which is characterized in that the circuit board (6) is set to described
One end of the flanging opening of one magnetic conduction core (1), the field sensing component (5) are located at two foldings of the first magnetic conduction core (1)
Between the end on side.
7. any closed-loop current sensors according to claim 1~6, which is characterized in that the field sensing component (5)
Selected from magnetoresistance device, Hall element or fluxgate induction pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821370595.XU CN208736925U (en) | 2018-08-24 | 2018-08-24 | A kind of closed-loop current sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821370595.XU CN208736925U (en) | 2018-08-24 | 2018-08-24 | A kind of closed-loop current sensors |
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| Publication Number | Publication Date |
|---|---|
| CN208736925U true CN208736925U (en) | 2019-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821370595.XU Active CN208736925U (en) | 2018-08-24 | 2018-08-24 | A kind of closed-loop current sensors |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607987A (en) * | 2021-07-30 | 2021-11-05 | 重庆长安汽车股份有限公司 | Current sensor structure |
| CN114660347A (en) * | 2022-03-23 | 2022-06-24 | 宁波希磁电子科技有限公司 | Current sensor |
-
2018
- 2018-08-24 CN CN201821370595.XU patent/CN208736925U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607987A (en) * | 2021-07-30 | 2021-11-05 | 重庆长安汽车股份有限公司 | Current sensor structure |
| CN114660347A (en) * | 2022-03-23 | 2022-06-24 | 宁波希磁电子科技有限公司 | Current sensor |
| CN114660347B (en) * | 2022-03-23 | 2023-01-20 | 宁波希磁电子科技有限公司 | Current sensor |
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