CN215375563U - Anti-interference Hall current sensor for vehicle - Google Patents
Anti-interference Hall current sensor for vehicle Download PDFInfo
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- CN215375563U CN215375563U CN202022753909.8U CN202022753909U CN215375563U CN 215375563 U CN215375563 U CN 215375563U CN 202022753909 U CN202022753909 U CN 202022753909U CN 215375563 U CN215375563 U CN 215375563U
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Abstract
An anti-interference Hall current sensor for a vehicle comprises a shell, an annular magnetic core wrapping a lead and a Hall sensor; the outer shell comprises a base and a connected annular shell, and an annular magnetic core is arranged in the annular shell; a gap is arranged on the annular magnetic core, a Hall sensor is arranged in the gap, and an amplifying and signal output circuit is arranged in the base; the signal of the Hall sensor is connected to the input end of the amplifying and signal outputting circuit, and the base is provided with an electric output port of the amplifying and signal outputting circuit.
Description
Technical Field
The hall current sensor is a magnetic sensor using the hall effect principle, and can detect a current signal and its change.
Background
A hall current sensor is a device for detecting current that is made using the hall effect principle. The device has the outstanding characteristics of capability of measuring current signals under the condition of electric isolation, high precision, low power consumption, firm structure, small volume, light weight, long service life and the like, and is vibration-resistant and not afraid of pollution or corrosion of dust, oil stain, water vapor, salt mist and the like.
The applicant is a professional enterprise for manufacturing various hall sensors including hall current sensors, applies for a plurality of hall sensors for many years and obtains applications in various aspects, for example, a design method of a long-detection-distance high-precision hall position annunciator in CN2019110851510, a ceramic airtight cover device of a reversed-buckled hall integrated circuit in CN2019215601095, CN2019215600872, a miniaturized chip type ceramic hall integrated circuit packaging structure, CN2019215601038 and a hall current sensor. However, no device for measuring the input current of the frequency converter of the electric automobile exists at present, and the input current of the frequency converter of the electric automobile has large range change of the current and has large interference on the measured value.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an anti-interference Hall current sensor for detecting the current of an automobile power supply. The measuring range of the current is changed greatly, and the anti-interference effect on the measurement can be effectively realized. The utility model discloses a current sensor measuring terminal and the output of setting are 45mm apart.
The technical scheme of the utility model is that the anti-interference Hall current sensor for the vehicle comprises a shell, an annular magnetic core wrapping a lead and a Hall sensor; the outer shell comprises a base and a connected annular shell, and an annular magnetic core is arranged in the annular shell; a gap or a gap is arranged on the annular magnetic core, a Hall sensor is arranged in the gap or the gap, and an amplifying and signal output circuit is arranged in the base; the signal of the Hall sensor is connected to the input end of the amplifying and signal outputting circuit, and the base is provided with an electric output port of the amplifying and signal outputting circuit.
The electromagnetic converter comprises an electromagnetic conversion device for inputting current by a frequency converter, an annular magnetic core, a magnetoelectric conversion circuit taking a Hall element as a core, and a signal amplification, signal adjustment and signal output circuit.
Has the advantages that: the Hall current sensor of the utility model outputs signals, and has the advantages of no contact, no abrasion, clear output waveform, no jitter, no rebound and the like. When the magnetic field intensity of the input current changes, the output of the Hall current sensor changes along with the change of the magnetic field intensity of the input current.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a circuit layout diagram of the present invention.
Detailed Description
As shown in the figure, the Hall sensor assembly comprises parts such as electromagnetic conversion, magnetoelectric conversion, signal amplification, signal output and the like, and the scheme of the utility model adopts the working principle of a Hall direct-amplification current sensor; the line consists of three parts: the first part is a magnetic core and a Hall element, and the magnetic core is used for gathering magnetic fields generated by each phase of current on board (motor current of the electric vehicle); in the second part, a Hall element detects a current signal generated by a magnetic field, and the current signal is subjected to differential amplification and an anti-interference circuit; the third part is signal output.
The annular shell 1 is internally provided with an annular magnetic core 2, the annular shell is provided with a notch 1-1 corresponding to the magnetic core, and the notch is positioned at the top end of the annular shell. The distance between the gap on the shell and the electric connection output port 4 arranged on the base is larger than 45 mm.
The integrated scheme is adopted in the structural design, so that the small-volume large-current range of the sensor is realized, the magnetic field generated by current is gathered through the magnetic core, and the magnetic field signal is induced through the Hall element.
The annular magnetic core 2 is a large ring made of magnetic conductive materials such as a wrought iron rod, the diameter of the large ring is 5-15cm, and the diameter of the wrought iron rod is 4-10 mm. The large ring is provided with a notch for placing a Hall element, and the lead 3 is positioned in the annular magnetic core.
The Hall current sensor is applied to current control of an automobile power supply management system, and particularly measures the input current of an electric automobile frequency converter. The working principle is that the Hall effect is utilized to convert the input current of the frequency converter and the time of the change of the working state into the current quantity output by the Hall current sensor for detection and control.
Claims (1)
1. An anti-interference Hall current sensor for a vehicle is characterized by comprising a shell, an annular magnetic core wrapping a lead and a Hall sensor; the outer shell comprises a base and a connected annular shell, and an annular magnetic core is arranged in the annular shell; a gap is arranged on the annular magnetic core, a Hall sensor is arranged in the gap, and an amplifying and signal output circuit is arranged in the base; the signal of the Hall sensor is connected to the input end of the amplifying and signal outputting circuit, and the base is provided with an electric output port of the amplifying and signal outputting circuit; the annular shell is internally provided with an annular magnetic core, and is provided with a notch corresponding to the magnetic core, and the notch is positioned at the top end of the annular shell; the distance between the gap on the shell and the power connection output port arranged on the base is more than 45 mm; the annular magnetic core is a large ring made of magnetic conductive materials such as a wrought iron rod, the diameter of the large ring is 5-15cm, and the diameter of the wrought iron rod is 4-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022753909.8U CN215375563U (en) | 2020-11-25 | 2020-11-25 | Anti-interference Hall current sensor for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022753909.8U CN215375563U (en) | 2020-11-25 | 2020-11-25 | Anti-interference Hall current sensor for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215375563U true CN215375563U (en) | 2021-12-31 |
Family
ID=79599290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022753909.8U Active CN215375563U (en) | 2020-11-25 | 2020-11-25 | Anti-interference Hall current sensor for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215375563U (en) |
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2020
- 2020-11-25 CN CN202022753909.8U patent/CN215375563U/en active Active
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