CN201993456U - Detection device for Hall current sensor - Google Patents
Detection device for Hall current sensor Download PDFInfo
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- CN201993456U CN201993456U CN2010206741620U CN201020674162U CN201993456U CN 201993456 U CN201993456 U CN 201993456U CN 2010206741620 U CN2010206741620 U CN 2010206741620U CN 201020674162 U CN201020674162 U CN 201020674162U CN 201993456 U CN201993456 U CN 201993456U
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- current sensor
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- hall current
- magnetic core
- direct current
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Abstract
The utility model relates to a detection device for a Hall current sensor. The Hall current sensor comprises a magnetic core and an output voltage detection circuit connected to the secondary side of the magnetic core, and is characterized in that the detection device comprises an adjustable direct current power supply, a resistance box and coil, wherein the coil is winded on the primary side of the magnetic core, and the coil and the resistance box are serially connected between the anode and the cathode of the adjustable direct current power supply. In the detection device employing the structure, the coil is connected between the anode and the cathode of the adjustable direct current power supply, so that the device can conveniently change current value flowing the primary side coil by adjusting the output voltage of the adjustable direct current power supply, and can determine secondary side voltage values corresponding to different primary side current input values by observing the output voltage detection circuit connected to the secondary side of the magnetic core, thus the linear characteristic of the Hall current sensor can be determined. Furthermore, the device is simple in structure, convenient in application, and low in cost.
Description
Technical field
The utility model relates to sensor field, and particularly the current sensor field specifically is meant a kind of Hall current sensor pick-up unit.
Background technology
Along with environmental issue is more and more paid close attention to by society, it has been trend of the times that fuel-engined vehicle is replaced by new-energy automobile, and pure electric automobile has obtained unprecedented opportunity to develop.Therefore electric automobile can play good effect in energy saving and environmental protection owing to have characteristics such as volume is little, in light weight.Electric machine controller is its core component in electric automobile, controller performance decision car load security and reliability.For improving the stationarity of motor, guarantee that motor is an Environmental security job effectively and reliably, three Hall current sensors generally all are housed in the electric machine controller, are respectively applied for and detect DC bus current and motor line current mutually, thereby realize the output current of motor and the control of output torque.
Hall current sensor generally comprises a magnetic core, be arranged at the coil on the former limit of magnetic core and be arranged at the output voltage pick-up unit of magnetic core secondary.When coil passes through electric current, produce magnetic field around the coil, the size in magnetic field is directly proportional with the size of the electric current that flows through coil.Assemble by magnetic core in this magnetic field, hall device with the magnetic core secondary detects then, because the variation in magnetic field and the output voltage signal of hall device have good linear relationship, therefore, the output signal that secondary output voltage pick-up unit records is the size of electric current in the reactor coil directly.
In the production maintenance process of electric automobile, need correct maximum current and the maximum output torque of demarcating drive motor with the Hall current sensor that changes damage, because the linear feature of the Hall current sensor of different brands is distinguished to some extent, so before replacing, need accurately to measure the secondary side output voltage values under the different primary side input current situations, thereby determine its linear feature, can demarcate and replace.But in the prior art, shortage can be tested the device of Hall current sensor safely, effectively, reliably, thereby the production and the maintenance of the electric machine controller of electric automobile are made troubles.
The utility model content
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, provides a kind of and can test Hall current sensor safely, effectively, reliably, and simple in structure, use easy, the Hall current sensor pick-up unit that cost is comparatively cheap.
In order to realize above-mentioned purpose, Hall current sensor pick-up unit of the present utility model has following formation:
This Hall current sensor pick-up unit, comprise magnetic core and the output voltage detecting circuit that is connected in described magnetic core secondary, its principal feature is, described pick-up unit comprises adjustable power of direct current, resistance box and coil, described coil is wound in the former limit of described Hall current sensor magnetic core, and described coil is connected with described resistance box and is connected between the positive pole and negative pole of described adjustable power of direct current.
In this Hall current sensor pick-up unit, described resistance box comprises support and is fixed at least two resistance parallel with one another of support.
In this Hall current sensor pick-up unit, described resistance box comprises 9 40 Ohmages parallel with one another.
In this Hall current sensor pick-up unit, the number of turn of described coil is 5 circles.
In this Hall current sensor pick-up unit, described coil has the braiding copper cash of insulation course for the surface.
Adopted the Hall current sensor pick-up unit of this utility model, because it comprises adjustable power of direct current, resistance box and coil, described coil is wound in the former limit of described Hall current sensor magnetic core, described coil is connected with described resistance box and is connected between the positive pole and negative pole of described adjustable power of direct current, make that this device can be easily by regulating the output voltage of adjustable power of direct current, change the current value that flows through primary coil, by observing the output voltage detecting circuit of magnetic core secondary, determine the pairing secondary side magnitude of voltage of different primary side current input values, to judge the linear feature of Hall current sensor.The utility model is simple in structure, uses easyly, and cost is comparatively cheap.
Description of drawings
Fig. 1 is the electrical block diagram of Hall current sensor pick-up unit of the present utility model.
Embodiment
In order more to be expressly understood technology contents of the present utility model, describe in detail especially exemplified by following examples.
See also shown in Figure 1ly, be the electrical block diagram of Hall current sensor pick-up unit of the present utility model.
Wherein, described Hall current sensor comprises magnetic core and the output voltage detecting circuit that is connected in described magnetic core secondary.
In a kind of embodiment of the present utility model, described Hall current sensor pick-up unit comprises adjustable power of direct current, resistance box and coil, wherein, described coil is wound in the former limit of described Hall current sensor magnetic core, and described coil is connected with described resistance box and is connected between the positive pole and negative pole of described adjustable power of direct current.Described resistance box comprises support and is fixed at least two resistance parallel with one another of support.Described coil has the braiding copper cash of insulation course for the surface.
Of the present utility model a kind of preferred embodiment in, described resistance box comprises the resistance of 1.75 kilowatts of 9 40 ohm of rated power parallel with one another, the number of turn of described coil is 5 circles, described adjustable power of direct current is 0～400V adjustable power of direct current.
In practical application of the present utility model, because Hall current sensor primary side inlet wire window is less, be 20 * 10mm, the number of turn of braiding copper cash that therefore enters the inlet wire window is limited, need reach the 350A electric current of detection, then every circle copper cash need flow through the electric current of 70A.For reaching the electric current that every circle copper cash flows through 70A, the maximal value of regulated power supply needs to be transferred to about 300VDC.Higher because of voltage, electric current is bigger, when using this pick-up unit test Hall current sensor, guarantee that the insulation of total system is reliable, notes handling safety simultaneously.
Adopted the Hall current sensor pick-up unit of this utility model, because it comprises adjustable power of direct current, resistance box and coil, described coil is wound in the former limit of described Hall current sensor magnetic core, described coil is connected with described resistance box and is connected between the positive pole and negative pole of described adjustable power of direct current, make that this device can be easily by regulating the output voltage of adjustable power of direct current, change the current value that flows through primary coil, by observing the output voltage detecting circuit of magnetic core secondary, determine the pairing secondary side magnitude of voltage of different primary side current input values, to judge the linear feature of Hall current sensor.The utility model is simple in structure, uses easyly, and cost is comparatively cheap.
In this instructions, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (5)
1. Hall current sensor pick-up unit, described Hall current sensor comprises magnetic core and is connected in the output voltage detecting circuit of described magnetic core secondary, it is characterized in that, described pick-up unit comprises adjustable power of direct current, resistance box and coil, described coil is wound in the former limit of described Hall current sensor magnetic core, and described coil is connected with described resistance box and is connected between the positive pole and negative pole of described adjustable power of direct current.
2. Hall current sensor pick-up unit according to claim 1 is characterized in that, described resistance box comprises support and is fixed at least two resistance parallel with one another of support.
3. Hall current sensor pick-up unit according to claim 2 is characterized in that, described resistance box comprises 9 40 Ohmages parallel with one another.
4. Hall current sensor pick-up unit according to claim 1 is characterized in that, the number of turn of described coil is 5 circles.
5. according to each described Hall current sensor pick-up unit in the claim 1～4, it is characterized in that described coil has the braiding copper cash of insulation course for the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206741620U CN201993456U (en) | 2010-12-21 | 2010-12-21 | Detection device for Hall current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206741620U CN201993456U (en) | 2010-12-21 | 2010-12-21 | Detection device for Hall current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201993456U true CN201993456U (en) | 2011-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206741620U Expired - Fee Related CN201993456U (en) | 2010-12-21 | 2010-12-21 | Detection device for Hall current sensor |
Country Status (1)
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| CN (1) | CN201993456U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891757A (en) * | 2016-03-31 | 2016-08-24 | 中国电力科学研究院 | Open-loop Hall sensor measurement accuracy verification device and verification method thereof |
| CN105954699A (en) * | 2016-07-19 | 2016-09-21 | 合肥威博尔汽车技术有限公司 | Hall current sensor calibration method |
| CN106291431A (en) * | 2016-10-24 | 2017-01-04 | 中国科学院上海应用物理研究所 | A kind of tracking accuracy measuring method of current sensor |
| CN114062991A (en) * | 2021-12-10 | 2022-02-18 | 湖南常德牌水表制造有限公司 | Detection method and system of switch type Hall sensor |
-
2010
- 2010-12-21 CN CN2010206741620U patent/CN201993456U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891757A (en) * | 2016-03-31 | 2016-08-24 | 中国电力科学研究院 | Open-loop Hall sensor measurement accuracy verification device and verification method thereof |
| CN105954699A (en) * | 2016-07-19 | 2016-09-21 | 合肥威博尔汽车技术有限公司 | Hall current sensor calibration method |
| CN105954699B (en) * | 2016-07-19 | 2018-11-02 | 合肥威博尔汽车技术有限公司 | Hall current sensor calibration method |
| CN106291431A (en) * | 2016-10-24 | 2017-01-04 | 中国科学院上海应用物理研究所 | A kind of tracking accuracy measuring method of current sensor |
| CN106291431B (en) * | 2016-10-24 | 2018-11-27 | 中国科学院上海应用物理研究所 | A kind of tracking accuracy measurement method of current sensor |
| CN114062991A (en) * | 2021-12-10 | 2022-02-18 | 湖南常德牌水表制造有限公司 | Detection method and system of switch type Hall sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20171221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |