CN209728029U - A kind of magnetic circuit device of large range high precision Hall current sensor - Google Patents
A kind of magnetic circuit device of large range high precision Hall current sensor Download PDFInfo
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- CN209728029U CN209728029U CN201920138184.6U CN201920138184U CN209728029U CN 209728029 U CN209728029 U CN 209728029U CN 201920138184 U CN201920138184 U CN 201920138184U CN 209728029 U CN209728029 U CN 209728029U
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Abstract
The utility model provides a kind of magnetic circuit device of large range high precision Hall current sensor, including magnetic core (1), coil (2), Hall chip (3), auxiliary magnetic core (4).For the magnetic core that the utility model uses to be made of in rectangle, appearance in the circular soft magnetism silicon steel sheet texture part superposition that C font, circle are equipped with gap several cross sections, the gap of magnetic core is known as magnetic slit；Coil is the spiral winding along the outer wall of the magnetic core by the close circle coiling of insulated conductor；Hall chip is the electronic component that hall electromotive force is generated using Hall effect；Auxiliary magnetic core is shape flake soft magnetism silicon steel sheet texture part corresponding with magnetic core, auxiliary magnetic core with a thickness of the 1/10~1/5 of core thickness；Hall chip is located in the magnetic slit, and two auxiliary magnetic cores respectively correspond the technical solution for being clamped in the front and rear sides for the magnetic core for being wound with coil, makes Hall current sensor under the premise of keeping original volume, energy consumption and measurement accuracy, has achieved the purpose that range extension.
Description
Technical field
The utility model relates to a kind of magnetic circuit device, in particular to for expanding closed loop Hall current sensor range
A kind of magnetic circuit device of large range high precision Hall current sensor.
Background technique
Illustrate, closed loop Hall current sensor, also known as Hall current sensor, hereinafter referred to as sensor；
The it is proposed of problem: the sensor for being currently used in electric car is mostly 500A range specification, with electric car
Develop to the close direction of high power, it is desirable that improve the range of detection electric current under the premise of limiting volume, and require sensor
The lower the energy consumption of itself the better；
Magnetic circuit of the prior art for the sensor of electric car, referring to Fig.2, be made of magnetic core, coil and Hall chip,
It just must increase magnetic flux by increasing the volume of magnetic core to increase range, in order to obtain stronger balancing fields, also need to increase
The number of turns of ledger line circle when wide range, increases the excitation compensation electric current of coil, in this way, increasing the volume of sensor magnetic circuit itself
And energy consumption；Further, since the excitation of tested electric current and coil compensation electric current is in non-linear relation, when wide range, the magnetic conductance of magnetic core
Saturation is closed on, the measurement accuracy of sensor is caused to be greatly reduced；Due to being limited to the size of volume, the prior art is used for electronic vapour
The range of the sensor of vehicle is within 500A, to must just increase the volume of sensor more than 500A range, meanwhile, sensor
The energy consumption of itself can also increase with it, that is, for range extension, volume will transfinite, and energy consumption will increase, measurement accuracy drop
It is low；The sensor of the prior art exists, and under the premise of limiting volume, itself energy consumption and ensuring measurement accuracy, range is difficult to expand
Big problem and deficiency.
Summary of the invention
Aiming at the problems and shortcomings existing in the prior art, the utility model use by magnetic core, coil, Hall chip,
The device that auxiliary magnetic core is constituted, wherein magnetic core is the annulus for being equipped with gap in C font, circle in rectangle, appearance by several cross sections
The superposition of shape soft magnetism silicon steel sheet texture part is constituted, and the gap of magnetic core is known as magnetic slit；Coil be along the magnetic core outer wall by
The spiral winding of the close circle coiling of insulated conductor；Hall chip is the electronic component that hall electromotive force is generated using Hall effect；It is auxiliary
Magnetic core is shape flake soft magnetism silicon steel sheet texture part corresponding with magnetic core, auxiliary magnetic core with a thickness of the 1/10~1/ of core thickness
5；Hall chip is located in the magnetic slit, and two auxiliary magnetic cores respectively correspond the front and rear sides for being clamped in the magnetic core for being wound with coil；
When work, electric current flows through the magnetic field generated when copper bar to be assembled by magnetic core and auxiliary magnetic core, is detected by Hall chip,
And the hall electromotive force signal measured is fed back to the amplifying circuit of peripheral hardware, the amplifying circuit provides corresponding excitation to coil
Compensation electric current establishes balancing fields, and excitation compensation electric current directly reflects the size for flowing through the electric current of copper bar；In the process, by
A part of magnetic line of force is punished from magnetic core in auxiliary magnetic core and is flowed, when flowing through copper bar electric current and outranging, when being greater than 500A range,
The shunting function of auxiliary magnetic core be saturated the magnetic conductance of magnetic core will not, and excitation compensates electric current and still keeps linear ratio relation, make
The range for obtaining sensor is significantly increased, meanwhile, the excitation compensation electricity for increasing sensor because of non-linear relation will not occur
The energy consumption of stream will not also reduce the measurement accuracy of sensor because non-linear；The present apparatus is not necessarily to change the number of turns specification of coil, no
The radial dimension that will increase sensor magnetic circuit since auxiliary magnetic core is relatively thin, and only increases the axial dimension of sensor magnetic circuit, axial ruler
Very little increasing can be offset by optimizing the shelling machine of sensor, and therefore, the implementation of the present apparatus is without departing from sensor
The restriction of Dimensions size；The present apparatus uses the technical side that auxiliary magnetic core is added on the basis of prior art sensor magnetic circuit
Case provides a kind of magnetic circuit device of large range high precision Hall current sensor, it is intended to Hall current sensor be made to limit body
Product under the premise of not increasing itself energy consumption and ensuring measurement accuracy, achievees the purpose that range extension.
Purpose of the utility model is realized as follows: a kind of magnetic circuit of large range high precision Hall current sensor fills
It sets, including magnetic core, coil, Hall chip, auxiliary magnetic core, in which: the magnetic core is in rectangle, appearance by several cross sections in C
The circular soft magnetism silicon steel sheet texture part that font, circle are equipped with gap, which is superimposed, to be constituted, and the gap of magnetic core is known as magnetic slit；
The coil is the spiral winding along the outer wall of the magnetic core by the close circle coiling of insulated conductor；
The Hall chip is the electronic component that hall electromotive force is generated using Hall effect；
The auxiliary magnetic core is shape flake soft magnetism silicon steel sheet texture part corresponding with magnetic core, auxiliary magnetic core with a thickness of magnetic
The 1/10~1/5 of core thickness；
Hall chip is located in the magnetic slit, and two auxiliary magnetic cores respectively correspond the front and back for being clamped in the magnetic core for being wound with coil
Two sides.
For in face of the face of present apparatus main view axonometric schematic diagram before the direction face of above structure statement, behind for it is described
The opposite face in front.
Working principle and beneficial effect
When work, electric current flows through the magnetic field generated when copper bar to be assembled by magnetic core and auxiliary magnetic core, is detected by Hall chip,
And the hall electromotive force signal measured is fed back to the amplifying circuit of peripheral hardware, the amplifying circuit provides corresponding excitation to coil
Compensation electric current establishes balancing fields, and excitation compensation electric current directly reflects the size for flowing through the electric current of copper bar；In the process, by
A part of magnetic line of force is punished from magnetic core in auxiliary magnetic core and is flowed, when flowing through copper bar electric current and outranging, when being greater than 500A range,
The shunting function of auxiliary magnetic core be saturated the magnetic conductance of magnetic core will not, and excitation compensates electric current and still keeps linear ratio relation, make
The range for obtaining sensor is significantly increased, meanwhile, the excitation compensation electricity for increasing sensor because of non-linear relation will not occur
The energy consumption of stream will not also reduce the measurement accuracy of sensor because non-linear；The copper bar is the conductor of tested electric current.
The present apparatus is not necessarily to change the number of turns specification of coil, not will increase the radial dimension of sensor magnetic circuit, due to auxiliary magnetic core
It is relatively thin, and only increase the axial dimension of sensor magnetic circuit, increasing for axial dimension can be by the shelling machine of optimization sensor
It is offset, therefore, the restriction of the implementation of the present apparatus without departing from sensor Dimensions size.
Present apparatus structure is simple, reliable operation, by adding auxiliary magnetic core on the basis of prior art sensor magnetic circuit, makes
Hall current sensor expands range under the premise of limiting volume, not increasing itself energy consumption and ensure measurement accuracy.
Test proves, by taking the Hall current sensor of former 500A range specification as an example: using the former 500A range of the present apparatus
The Hall current sensor of specification, under the premise of keeping original volume, energy consumption and measurement accuracy, measuring range multiplication, i.e. range by
Former 500A can be promoted to 1000A.
Above-mentioned, the utility model uses the device that is made of magnetic core, coil, Hall chip, auxiliary magnetic core, wherein magnetic core is
It is made of in rectangle, appearance in the circular soft magnetism silicon steel sheet texture part superposition that C font, circle are equipped with gap several cross sections,
The gap of magnetic core is known as magnetic slit；Coil is the spiral winding along the outer wall of the magnetic core by the close circle coiling of insulated conductor；
Hall chip is the electronic component that hall electromotive force is generated using Hall effect；Auxiliary magnetic core is shape flake corresponding with magnetic core
Soft magnetism silicon steel sheet texture part, auxiliary magnetic core with a thickness of the 1/10~1/5 of core thickness；Hall chip is located in the magnetic slit,
Two auxiliary magnetic cores respectively correspond the technical solution for being clamped in the front and rear sides for the magnetic core for being wound with coil, overcome the biography of the prior art
Sensor exists, the problem of limit volume, itself energy consumption and under the premise of ensure measurement accuracy, range is difficult to scale up with it is insufficient,
A kind of magnetic circuit device of provided large range high precision Hall current sensor makes Hall current sensor keep original body
Under the premise of product, energy consumption and measurement accuracy, range extension is achieved the purpose that.
Detailed description of the invention
Fig. 1 is that a kind of main view axis of the magnetic circuit device of large range high precision Hall current sensor of the utility model measures
It is intended to；
Fig. 2 is the main view axonometric schematic diagram of the magnetic circuit device of prior art Hall current sensor.
Embodiment in reference to the accompanying drawing is described in further detail the utility model, but should not be construed as to this reality
With novel any restrictions.
In figure: magnetic core 1, magnetic slit 11, coil 2, Hall chip 3, auxiliary magnetic core 4, copper bar 01.
Specific embodiment
Refering to fig. 1, the magnetic circuit device of a kind of large range high precision Hall current sensor of the utility model, including magnetic core
1, coil 2, Hall chip 3, auxiliary magnetic core 4, in which: the magnetic core 1 is in rectangle, appearance by several cross sections in C font, circle
The circular soft magnetism silicon steel sheet texture part for being equipped with gap, which is superimposed, to be constituted, and the gap of magnetic core 1 is known as magnetic slit 11；
The coil 2 is the spiral winding along the outer wall of the magnetic core 1 by the close circle coiling of insulated conductor；
The Hall chip 3 is the electronic component that hall electromotive force is generated using Hall effect；
The auxiliary magnetic core 4 is shape laminar soft magnetism silicon steel sheet texture part corresponding with magnetic core 1, the thickness of auxiliary magnetic core 4
It is the 1/10~1/5 of 1 thickness of magnetic core；
Hall chip 3 is located in the magnetic slit 11, and two auxiliary magnetic cores 4, which respectively correspond, is clamped in the magnetic core 1 for being wound with coil 2
Front and rear sides.
For in face of the face of present apparatus main view axonometric schematic diagram before the direction face of above structure statement, behind for it is described
The opposite face in front.
Working principle and beneficial effect
When work, electric current flows through the magnetic field generated when copper bar 01 to be assembled by magnetic core 1 and auxiliary magnetic core 4, is carried out by Hall chip 3
It detects, and the hall electromotive force signal measured is fed back to the amplifying circuit of peripheral hardware, the amplifying circuit provides accordingly to coil 2
Excitation compensation electric current establish balancing fields, excitation compensation electric current directly reflects the size for flowing through the electric current of copper bar 01；Herein
In the process, a part of magnetic line of force is punished due to auxiliary magnetic core 4 from magnetic core 1 and is flowed, when flowing through 01 electric current of copper bar and outranging, such as greatly
When 500A range, the shunting function of auxiliary magnetic core 4 be saturated the magnetic conductance of magnetic core 1 will not, and excitation compensates electric current and still keeps
Linear ratio relation, so that the range of sensor is significantly increased, meanwhile, it will not occur to increase sensing because of non-linear relation
The energy consumption of the excitation compensation electric current of device, will not also reduce the measurement accuracy of sensor because non-linear；The copper bar 01 is tested
The conductor of electric current.
The present apparatus is not necessarily to change the number of turns specification of coil 2, not will increase the radial dimension of sensor magnetic circuit, due to auxiliary magnetic core
4 is relatively thin, and only increases the axial dimension of sensor magnetic circuit, and increasing for axial dimension can be by the shelling machine of optimization sensor
It is offset, therefore, the restriction of the implementation of the present apparatus without departing from sensor Dimensions size.
Present apparatus structure is simple, reliable operation, by adding auxiliary magnetic core 4 on the basis of prior art sensor magnetic circuit,
Make Hall current sensor under the premise of limiting volume, not increasing itself energy consumption and ensure measurement accuracy, expands range.
Test proves, by taking the Hall current sensor of former 500A range specification as an example: using the former 500A range of the present apparatus
The Hall current sensor of specification, under the premise of keeping original volume, energy consumption and measurement accuracy, measuring range multiplication, i.e. range by
Former 500A can be promoted to 1000A.
Claims (1)
1. a kind of magnetic circuit device of large range high precision Hall current sensor, including magnetic core (1), coil (2), Hall chip
(3), auxiliary magnetic core (4), it is characterised in that: the magnetic core (1) be by several cross sections in rectangle, appearance in C font, circle on set
There is the circular soft magnetism silicon steel sheet texture part superposition of gap to constitute, the gap of magnetic core (1) is known as magnetic slit (11)；
The coil (2) is the spiral winding along the outer wall of the magnetic core (1) by the close circle coiling of insulated conductor；
The Hall chip (3) is the electronic component that hall electromotive force is generated using Hall effect；
The auxiliary magnetic core (4) is shape laminar soft magnetism silicon steel sheet texture part corresponding with magnetic core (1), the thickness of auxiliary magnetic core (4)
Degree is the 1/10~1/5 of magnetic core (1) thickness；
Hall chip (3) is located in the magnetic slit (11), and two auxiliary magnetic cores (4), which respectively correspond to be clamped in, is wound with coil (2)
The front and rear sides of magnetic core (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920138184.6U CN209728029U (en) | 2019-01-17 | 2019-01-17 | A kind of magnetic circuit device of large range high precision Hall current sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920138184.6U CN209728029U (en) | 2019-01-17 | 2019-01-17 | A kind of magnetic circuit device of large range high precision Hall current sensor |
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| CN209728029U true CN209728029U (en) | 2019-12-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109683009A (en) * | 2019-01-17 | 2019-04-26 | 上海崇林汽车电子有限公司 | A kind of magnetic circuit device of large range high precision Hall current sensor |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109683009A (en) * | 2019-01-17 | 2019-04-26 | 上海崇林汽车电子有限公司 | A kind of magnetic circuit device of large range high precision Hall current sensor |
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Effective date of registration: 20220908 Address after: 276000 1000 meters west of the intersection of Aucma Avenue and Wolongshan Road, Jiehu Street, Yinan County, Linyi City, Shandong Province Patentee after: Shandong Shuanglin New Energy Technology Co.,Ltd. Address before: 201700 No.202 Beiying Road, Qingpu District, Shanghai Patentee before: SHANGHAI CHONGLIN AUTOMOTIVE ELECTRONICS Co.,Ltd. |
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