CN209264811U - Double-iron core closed-loop current sensors - Google Patents
Double-iron core closed-loop current sensors Download PDFInfo
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- CN209264811U CN209264811U CN201822114042.4U CN201822114042U CN209264811U CN 209264811 U CN209264811 U CN 209264811U CN 201822114042 U CN201822114042 U CN 201822114042U CN 209264811 U CN209264811 U CN 209264811U
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- iron core
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- current sensors
- loop current
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Abstract
The utility model provides a kind of double-iron core closed-loop current sensors comprising circuit board, winding coil, the iron core shell wound by winding coil, further include imperforation iron core, open core and field sensing component；The imperforation iron core and open core are respectively positioned in iron core shell, and the opening magnet is equipped with the opening through open core, and the field sensing component is placed in the opening.The utility model double-iron core double-iron core closed-loop current sensors, by the way that field sensing component is placed in the opening of open core, the problems such as solving single iron core there are output current oscillations, overshoot and eccentric indeterminacies in dynamic response, it is greatly improved the dynamic indicator of double-iron core closed-loop current sensors, effectively reduce output current oscillations and overshoot, at the same greatly reduce because magnetic resistance it is unequal caused by eccentric phenomena.
Description
Technical field
The utility model belongs to the technical field more particularly to a kind of double-iron core double-iron core closed loop current sensing of sensor
Device.
Background technique
Sensor is a kind of detection device, can detect the relevant information of tested equipment, be transformed into electric signal according to certain rules
Or the information output of other required forms, it is required with transmission, processing, storage, display, record and the control etc. that meet information.It passes
Sensor application range is very extensive, provides a kind of necessary technical support for instrumentation devices.Hall current sensor is to answer
The current measuring element of isolation detection is carried out with a kind of pair of primary current that Hall effect principle is developed, what primary current generated
As collected by magnetism gathering rings, the Hall element being placed in magnetism gathering rings is acquired magnetic field in magnetic field, generates one and primary side magnetic field etc.
The Hall voltage of ratio, by the size for measuring the Hall voltage, so that it may realize the isolation detection to primary current.
Iron core used in closed-loop current sensors currently on the market is usually the single iron core with open, straight surveying
Application is able to satisfy when galvanic electricity stream.But on dynamic response, if trace pulse rushes electric current, then can be open magnetic resistance and winding due to iron core
The inductive impact of coil will lead to phenomena such as oscillation, overshoot and eccentric indeterminacy occur for output electric current.To solve this problem, originally
Utility model devises a kind of double-iron core closed-loop current sensors.
Utility model content
The purpose of this utility model is to provide a kind of double-iron core closed loops that can be improved dynamic response and reduce eccentric phenomena
Current sensor.
The utility model provides a kind of double-iron core closed-loop current sensors comprising circuit board, winding coil, by winding wire
The iron core shell for enclosing winding, further includes imperforation iron core, open core and field sensing component；It the imperforation iron core and opens
Mouth iron core is respectively positioned in iron core shell, and the opening magnet is equipped with the opening through open core, and the field sensing component is put
It sets in the opening.
Preferably, the imperforation iron core and open core overlapping are put or are placed in the iron core shell up and down.
Preferably, the imperforation iron core is located at the lower section of open core, the outer diameter of imperforation iron core and open core and
Internal diameter is all the same.
Preferably, it the imperforation iron core and open core lay out in parallel or is inside and outside placed in the iron core shell.
Preferably, the field sensing component is Hall chip, magnetoresistance device or fluxgate magnetic core.
Preferably, the open core, which refers to, cuts away the identical iron with open core height in the cross-wise direction along iron core
Core, also leaving part iron core is unclosed ring body.
Preferably, the double-iron core closed-loop current sensors are located in product casing, are equipped at least in the product casing
One receiving cavity and it is located at the intracorporal cylinder of accommodating chamber, double-iron core closed-loop current sensors are located at the receiving of product casing
In cavity.
The utility model double-iron core double-iron core closed-loop current sensors, by the way that field sensing component is placed on open core
Opening in, can be significantly the problems such as solving single iron core there are output current oscillations, overshoot and eccentric indeterminacies in dynamic response
Improve double-iron core closed-loop current sensors dynamic indicator, effectively reduce output current oscillations and overshoot, at the same greatly reduce because
Eccentric phenomena caused by magnetic resistance is unequal.
Detailed description of the invention
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
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the decomposition diagram of the utility model double-iron core closed-loop current sensors；
Fig. 2 is the top view of double-iron core closed-loop current sensors shown in Fig. 1.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
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 embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
A kind of double-iron core closed-loop current sensors of the utility model mainly solve single iron core and there is output in dynamic response
The problems such as current oscillation, overshoot and eccentric indeterminacy, the utility model can be used for measuring DC current, alternating current and pulse electricity
Stream.
As depicted in figs. 1 and 2, double-iron core closed-loop current sensors include circuit board 1, winding coil 2, iron core shell 3, nothing
Open core 5, open core 4 and the field sensing component 7 being placed in open core 4, this double-iron core closed loop current sensing
Device is located in product casing 6.Wherein, imperforation iron core 5 and open core 4 can be overlapped (or upper and lower) and be placed in iron core shell 3
Or be placed in iron core shell 3 side by side (or inside and outside), in the present embodiment, imperforation iron core 5 and open core 4 are overlapping pendulum
It puts, it may be assumed that imperforation iron core 5 is located at the lower section of open core 4, and the outer diameter and inner diameter of imperforation iron core 5 and open core 4 is homogeneous
Together.
Open core 4 is equipped with the opening 41 through open core 4, and field sensing component 7 is placed in opening 41.Magnetic field inspection
Survey element 7 is Hall chip, magnetoresistance device, fluxgate magnetic core or other chips etc., and in present case, field sensing component 7 is
For Hall chip.
Open core 4, which refers to, cuts away the identical iron core with open core height in the cross-wise direction along iron core, also leaves
Part iron core is unclosed ring body.
Imperforation iron core 5 and open core 4 are put in iron core shell 3.Winding coil 2 is wound on iron core shell 3.Circuit
Plate 1 and winding coil 2 are put in product casing 6.
By being placed on field sensing component 7 in the opening 41 of open core 4, solves single iron core and deposited in dynamic response
Output current oscillations, overshoot and the eccentric indeterminacy the problems such as, the dynamic property of double-iron core closed-loop current sensors is greatly improved.
The assembling mode of this double-iron core closed-loop current sensors are as follows: imperforation iron core 5 and open core 4 are respectively positioned on outside iron core
In shell 3, winding coil 2 is wound on iron core shell 3, circuit board 1 and winding coil 2 are put in product casing 6.
Cylinder 62 in product casing 6 equipped at least one receiving cavity 61 and in receiving cavity 61, this double iron
Core closed-loop current sensors are located in the receiving cavity 61 of product casing 6, and imperforation iron core 5 and open core 4 are set in cylinder
On 52, iron core shell 3 is set on imperforation iron core 5 and open core 4, and winding coil 2 is wound around on iron core shell 3 and bypasses
Half opening iron core 4, circuit board 1 are fixed on iron core shell 3, when necessary, are consolidated double-iron core closed-loop current sensors using encapsulating
It is scheduled in product casing 6.
The utility model double-iron core double-iron core closed-loop current sensors, by the way that field sensing component is placed on open core
Opening in, can be significantly the problems such as solving single iron core there are output current oscillations, overshoot and eccentric indeterminacies in dynamic response
Improve double-iron core closed-loop current sensors dynamic indicator, effectively reduce output current oscillations and overshoot, at the same greatly reduce because
Eccentric phenomena caused by magnetic resistance is unequal.
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 double-iron core closed-loop current sensors comprising circuit board, winding coil, by winding coil winding iron core outside
Shell, it is characterised in that: further include imperforation iron core, open core and field sensing component；The imperforation iron core and opening
Iron core is respectively positioned in iron core shell, and the open core is equipped with the opening through open core, and the field sensing component is placed
In the opening.
2. double-iron core closed-loop current sensors according to claim 1, it is characterised in that: the imperforation iron core and opening
Iron core overlapping is put or is placed in the iron core shell up and down.
3. double-iron core closed-loop current sensors according to claim 2, it is characterised in that: the imperforation iron core, which is located at, to be opened
The outer diameter and inner diameter of the lower section of mouth iron core, imperforation iron core and open core is all the same.
4. double-iron core closed-loop current sensors according to claim 1, it is characterised in that: the imperforation iron core and opening
Iron core lay out in parallel is inside and outside placed in the iron core shell.
5. double-iron core closed-loop current sensors according to any one of claims 1 to 4, it is characterised in that: the magnetic field detection
Element is Hall chip, magnetoresistance device or fluxgate magnetic core.
6. double-iron core closed-loop current sensors according to any one of claims 1 to 4, it is characterised in that: the open core
Refer to and cut away the identical iron core with open core height in the cross-wise direction along iron core, it is unclosed for also leaving part iron core
Ring body.
7. double-iron core closed-loop current sensors according to any one of claims 1 to 4, it is characterised in that: the double-iron core closes
Circular current sensor is located in product casing, at least one receiving cavity is equipped in the product casing and is located at accommodating chamber
Intracorporal cylinder, double-iron core closed-loop current sensors are located in the accommodating chamber body of product casing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017218467830 | 2017-12-26 | ||
| CN201721846783 | 2017-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209264811U true CN209264811U (en) | 2019-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822114042.4U Active CN209264811U (en) | 2017-12-26 | 2018-12-17 | Double-iron core closed-loop current sensors |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907727A (en) * | 2017-12-26 | 2018-04-13 | 深圳市艾华迪技术有限公司 | Double-iron core closed-loop current sensors |
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2018
- 2018-12-17 CN CN201822114042.4U patent/CN209264811U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907727A (en) * | 2017-12-26 | 2018-04-13 | 深圳市艾华迪技术有限公司 | Double-iron core closed-loop current sensors |
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