CN106645872A - Current sampling device based on diverter - Google Patents
Current sampling device based on diverter Download PDFInfo
- Publication number
- CN106645872A CN106645872A CN201611146357.6A CN201611146357A CN106645872A CN 106645872 A CN106645872 A CN 106645872A CN 201611146357 A CN201611146357 A CN 201611146357A CN 106645872 A CN106645872 A CN 106645872A
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- CN
- China
- Prior art keywords
- module
- voltage
- diverter
- current
- voltage detection
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention provides a current sampling device based on a diverter; the current sampling device comprises a diversion module and a sampling module; the sampling module is connected with the input end of tested current, and associated with the diversion module; the diversion module is provided with a voltage detection module so as to detect voltages formed on two ends of the voltage detection module; a filter module is arranged by the voltage detection module; am amplification module is arranged by the filter module; the voltage detection module is provided with a voltage grading module so as to grade the voltage result detected by the voltage detection module; a voltage/current conversion module is arranged by the voltage detection module; the voltage drop on the diverter is collected, filtered and amplified, and the amplified voltage value is collected by the voltage detection module and converted into a current value; a CAN bus transmission module can send the current value to a control unit of the upper grade, thus improving current sampling accuracy; a voltage limit module and a current leakage detection module can improve the safety.
Description
Technical field
The present invention relates to new-energy automobile field, more particularly to a kind of current sampling device based on diverter.
Background technology
At present when new-energy automobile is manufactured, the use of electric energy as power source is modal new-energy automobile, due to making
With electric energy as power, therefore need when in use to sample electric current using current sampling device, current sampling apparatuses
Typically use simple current sampling device to be sampled, but during current sample, easily cause current loss, cause electric current
Sampling is inaccurate.Therefore, when solving current sample, current loss causes to detect that inaccurate problem is just particularly important.
The content of the invention
It is an object of the invention to provide a kind of current sampling device based on diverter, by gathering pressure drop on diverter,
By filtering and amplifying, the magnitude of voltage after amplifying is gathered finally by voltage detection module, be converted into current value, it is total by CAN
Line transport module is sent to upper level control unit, improves the accuracy of current sample, current loss when solving current sample
Cause to detect inaccurate problem.
The present invention provides a kind of current sampling device based on diverter, including diverter module and sampling module, described to adopt
Egf block is connected to the input of electric current to be detected, and the sampling module is associated with diverter module, on the diverter module
Voltage detection module is provided with, voltage is produced to two ends by voltage detection module and is detected, by the voltage detection module
Filtration module is provided with, by the filtration module, amplification module is provided with, by filtration module and amplification module to voltage detecting
Module voltage to be detected is filtered and amplifies, and is provided with voltage diversity module, by voltage in the voltage detection module
Diversity module is classified to the voltage results that voltage detection module is detected, is provided with voltage x current by the voltage detection module
Modular converter.
Further improvement is that：Pressure limiting module is provided with the diverter module, by pressure limiting module to diverter module at
The current/voltage of reason carries out pressure limiting, prevents diverter module short circuit from causing device damage.
Further improvement is that：CAN transport module is provided with by the Voltage to current transducer module, it is total by CAN
Line transport module sends the current value that Voltage to current transducer module is changed to upper level control unit.
Further improvement is that：Detection of electrical leakage module is provided with the CAN transport module, by detection of electrical leakage mould
Safety of the block to CAN transport module is protected.
The invention has the beneficial effects as follows：By gathering pressure drop on diverter, by filtering and amplifying, examine finally by voltage
The magnitude of voltage surveyed after module collection is amplified, is converted into current value, is sent to upper level control by CAN transport module single
Unit, is improved the accuracy of current sample, and safety is lifted by pressure limiting module and detection of electrical leakage module.
Specific embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described, the embodiment
It is only used for explaining the present invention, does not constitute limiting the scope of the present invention.
Present embodiments provide a kind of current sampling device based on diverter, including diverter module and sampling module, institute
The input that sampling module is connected to electric current to be detected is stated, the sampling module is associated with diverter module, the divergent die
Voltage detection module is provided with block, voltage is produced to two ends by voltage detection module and is detected, the voltage detecting mould
Filtration module is provided with by block, by the filtration module, amplification module is provided with, by filtration module and amplification module to voltage
Detection module voltage to be detected is filtered and amplifies, and is provided with voltage diversity module, passes through in the voltage detection module
Voltage diversity module is classified to the voltage results that voltage detection module is detected, is provided with voltage by the voltage detection module
Current conversion module.Pressure limiting module is provided with the diverter module, the electric current electricity processed to diverter module by pressure limiting module
Pressure carries out pressure limiting, prevents diverter module short circuit from causing device damage.CAN biography is provided with by the Voltage to current transducer module
Defeated module, is sent the current value that Voltage to current transducer module is changed to upper level control unit by CAN transport module.
Detection of electrical leakage module is provided with the CAN transport module, by peace of the detection of electrical leakage module to CAN transport module
Full property is protected.By gathering pressure drop on diverter, by filtering and amplifying, amplify finally by voltage detection module collection
Magnitude of voltage afterwards, is converted into current value, is sent to upper level control unit by CAN transport module, improves current sample
Accuracy, and safety is lifted by pressure limiting module and detection of electrical leakage module.
Claims (4)
1. a kind of current sampling device based on diverter, including diverter module and sampling module, the sampling module are connected to
The input of electric current to be detected, the sampling module are associated with diverter module, it is characterised in that：Set on the diverter module
Voltage detection module is equipped with, voltage is produced to two ends by voltage detection module and is detected, set by the voltage detection module
Filtration module is equipped with, by the filtration module, amplification module is provided with, by filtration module and amplification module to voltage detecting mould
Block voltage to be detected is filtered and amplifies, and voltage diversity module is provided with the voltage detection module, by voltage point
Level module is classified to the voltage results that voltage detection module is detected, is provided with voltage x current and turns by the voltage detection module
Mold changing block.
2. the current sampling device based on diverter as claimed in claim 1, it is characterised in that：Arrange on the diverter module
Limited die block, carries out pressure limiting to the current/voltage that diverter module is processed by pressure limiting module, prevents diverter module short circuit from causing
Device damage.
3. the current sampling device based on diverter as claimed in claim 1, it is characterised in that：The Voltage to current transducer mould
CAN transport module is provided with by block, is sent out by the current value that Voltage to current transducer module is changed by CAN transport module
Deliver to upper level control unit.
4. the current sampling device based on diverter as claimed in claim 3, it is characterised in that：The CAN transmits mould
Detection of electrical leakage module is provided with block, is protected by safety of the detection of electrical leakage module to CAN transport module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611146357.6A CN106645872A (en) | 2016-12-13 | 2016-12-13 | Current sampling device based on diverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611146357.6A CN106645872A (en) | 2016-12-13 | 2016-12-13 | Current sampling device based on diverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106645872A true CN106645872A (en) | 2017-05-10 |
Family
ID=58825072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611146357.6A Pending CN106645872A (en) | 2016-12-13 | 2016-12-13 | Current sampling device based on diverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106645872A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201497766U (en) * | 2009-09-27 | 2010-06-02 | 哈尔滨理工大学 | Current sensor for realizing voltage sampling for current divider by adopting linear photoelectric coupler |
| CN202421296U (en) * | 2012-01-17 | 2012-09-05 | 常熟开关制造有限公司(原常熟开关厂） | Signal measurement circuit for direct current loop |
| CN102854366A (en) * | 2012-09-12 | 2013-01-02 | 西安交通大学 | Low current measuring device and low current measuring method in direct-current power distribution and consumption system |
-
2016
- 2016-12-13 CN CN201611146357.6A patent/CN106645872A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201497766U (en) * | 2009-09-27 | 2010-06-02 | 哈尔滨理工大学 | Current sensor for realizing voltage sampling for current divider by adopting linear photoelectric coupler |
| CN202421296U (en) * | 2012-01-17 | 2012-09-05 | 常熟开关制造有限公司(原常熟开关厂） | Signal measurement circuit for direct current loop |
| CN102854366A (en) * | 2012-09-12 | 2013-01-02 | 西安交通大学 | Low current measuring device and low current measuring method in direct-current power distribution and consumption system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |