CN106546923A - The method and apparatus that a kind of electric quantity monitoring meter detects high current - Google Patents
The method and apparatus that a kind of electric quantity monitoring meter detects high current Download PDFInfo
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- CN106546923A CN106546923A CN201610853491.3A CN201610853491A CN106546923A CN 106546923 A CN106546923 A CN 106546923A CN 201610853491 A CN201610853491 A CN 201610853491A CN 106546923 A CN106546923 A CN 106546923A
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- current
- electric quantity
- quantity monitoring
- current value
- monitoring meter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
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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
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The method that a kind of electric quantity monitoring meter of the present invention detects high current, methods described include：Actual current is reduced according to the first preset ratio, the current value after being reduced；The current value is sent to electric quantity monitoring meter, detecting the current value using sense resistances sensor, and control the current value carries out the amplification of the second preset ratio in a zone of reasonableness；Obtain the electric current after the amplification.This measuring method can avoid electric quantity monitoring meter in current measurement due to the restriction of range ability, improve electric quantity monitoring measurement amount range of application.
Description
Technical field
The present invention relates to hardware art, more particularly to the method and apparatus that a kind of electric quantity monitoring meter detects high current.
Background technology
At present, existing battery protecting plate, more and more uses electric quantity monitoring meter, due to being integrated with electric quantity monitoring meter
Specialty algorithm and the method comparison is ripe so as to there is high precision, be widely used.Meanwhile, with science and technology
Development, the detection to the hardware such as battery protecting plate, battery current, battery capacitor and performance requirement require more and more higher, and existing
Electric quantity monitoring meter due to production when defined range, therefore, electric quantity monitoring meter can only detect the value in range, surpass
Usability is then unable to when crossing detection range, the burning apparatus during well damage of equipment otherwise easily occurs.
When the electric current of product has exceeded the rated value of electric quantity monitoring meter, existing electric quantity monitoring meter can not be used.Example
Such as, when needing the high current of rated value of measuring electric quantity monitoring meter, electric quantity monitoring meter then directly can not be used.Therefore, it is how sharp
Detected with the electric quantity monitoring meter high current of existing low current range, improved electric quantity monitoring meter measurement range, saved equipment
Cost input, it is cost-effective, and the demand of company is disclosure satisfy that, become R ＆ D design personnel's problem demanding prompt solution.
The content of the invention
Based on this, the invention provides the method and apparatus that a kind of electric quantity monitoring meter detects high current.
A kind of method that electric quantity monitoring meter detects high current, it is characterised in that described method includes：
Actual current is reduced by S1 according to the first preset ratio, the current value I1 after being reduced；
S2 sends the current value I1 to electric quantity monitoring meter, detects the current value I1 using sense resistances sensor, and right
The amplification of the second preset ratio, the current value I2 after being amplified are carried out in a zone of reasonableness in the current value I1.
Preferably, the first described preset ratio is 1:N, the second described preset ratio are N:1, N≤20.
Preferably, described method also includes：
If during measurement I Ampere currents, using（N×J）The current sense impedance Rsence of m Ω, then measure（N×I）Ampere currents
When, using the current sense impedance Rsence of Jm Ω.
Preferably, maximum rated current value of the described current value I amperes for electric quantity monitoring measurement amount, described resistance value
For the resistance that Jm Ω are current sense impedance Rsence.
Preferably, described method also includes：
One CRC is provided, the current value is verified by the CRC.
A kind of electric quantity monitoring meter detects the device of high current, it is characterised in that described device includes：
Reduce module, the current value I1 for actual current is reduced according to the first preset ratio, after being reduced；
Control module, by the current value I1 is sent to electric quantity monitoring, detects the electricity using sense resistances sensor
Flow valuve I1, and control the current value I1 amplification of the second preset ratio is carried out in a zone of reasonableness；
Acquisition module, for obtaining the current value I2 after the amplification.
Preferably, the first described preset ratio is 1:N, the second described preset ratio are N:1, N≤20.
Preferably, described control module is additionally operable to：If during measurement I Ampere currents, needing to use（N×J）The electric current of m Ω is passed
Sense impedance Rsence, then measure（N×I）During Ampere currents, the current sense impedance Rsence of Jm Ω need to be used.
Preferably, maximum rated current value of the described current value I amperes for electric quantity monitoring measurement amount, described resistance value
For the resistance that Jm Ω are current sense impedance Rsence.
Preferably, described device also includes：
Module is provided, for providing a CRC, the current value is carried out by the CRC
Verification.
Beneficial effect：
The method that a kind of electric quantity monitoring meter of the present invention detects high current, methods described include：Actual current is pre- according to first
Current value if ratio is reduced, after being reduced；The current value is sent to electric quantity monitoring meter, is passed using sense resistances
Sensor detects the current value, and controls the current value amplification of the second preset ratio is carried out in a zone of reasonableness；Obtain
Take the electric current after the amplification.This measuring method can avoid electric quantity monitoring meter in current measurement due to the limit of range ability
System, improves electric quantity monitoring measurement amount range of application, and realizing is carried out to high current using the electric quantity monitoring meter of low current range
The requirement of detection, and existing electric quantity monitoring meter is adopted, the input of purchase of equipment is reduced, production cost is saved, is met company
Current monitoring require.
Description of the drawings
Fig. 1 is the method flow diagram that the electric quantity monitoring meter of the present invention detects high current.
Fig. 2 is the schematic diagram of the device of the electric quantity monitoring meter detection high current of the present invention.
Fig. 3 is the electric quantity monitoring schematic diagram of the method for the electric quantity monitoring meter detection high current of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and
It is not used in the restriction present invention.
Fig. 1 is refer to, a kind of method that electric quantity monitoring meter detects high current, methods described include：
Actual current is reduced by S1 according to the first preset ratio, the current value I1 after being reduced；
S2 sends the current value I1 to electric quantity monitoring meter, detects the current value I1 using sense resistances sensor, and right
The amplification of the second preset ratio, the current value I2 after being amplified are carried out in a zone of reasonableness in the current value I1.
Common knowledge of the described zone of reasonableness for those skilled in the art, and the current value to realize in industry.
Wherein in one embodiment, first preset ratio is 1:2.
Wherein in one embodiment, methods described also includes：
If when 32 Ampere currents is measured, the current sense impedance Rsence for being used is 10m Ω, then measuring 64 ampere-hours
Rsence should be 5m Ω, ensure that electric quantity monitoring meter is safe and reliable on hardware.
Wherein in one embodiment, methods described also includes：
One CRC is provided, the current value is verified by the CRC.
Wherein in one embodiment, second preset ratio is 2:1.
Fig. 2 is refer to, a kind of electric quantity monitoring meter detects the device of high current, and described device includes：
Reduce module 100, the current value for actual current is reduced according to the first preset ratio, after being reduced；
Control module 200, by the current value is sent to electric quantity monitoring, detects the electricity using sense resistances sensor
Flow valuve, and control the current value amplification of the second preset ratio is carried out in a zone of reasonableness；
Acquisition module 300, for obtaining the electric current after the amplification.
Wherein in one embodiment, first preset ratio is 1:2.
Wherein in one embodiment, the control module is additionally operable to：
If when 32 Ampere currents is measured, the current sense impedance Rsence for being used is 10m Ω, then measuring 64 ampere-hours
Rsence should be 5m Ω, ensure that electric quantity monitoring meter is safe and reliable on hardware.
Wherein in one embodiment, described device also includes：
Module is provided, for providing a CRC, the current value is carried out by the CRC
Verification.
Wherein in one embodiment, second preset ratio is 2:1.
Electric quantity monitoring meter is by current sense impedance Rsence measurements and calculating, there is provided the associated batteries number such as electric current, capacity
According to.The current maxima that at present electric quantity monitoring meter can measure charging and discharging is 32.767 amperes, due to the restriction of range, no
Bigger electric current, such as 64 amperes high currents can be measured.A kind of method that electric quantity monitoring meter detects high current, using reduction electric current
The numerical value of sense resistances Rsence, is ensureing in electric quantity monitoring measurement amount allowed band, the method for realizing checking of great current, principle
Schematic diagram refer to Fig. 3.
As a example by measuring 64 Ampere currents, it is assumed that when 32 Ampere currents is measured, the current sense impedance for being used
Rsence is 10m Ω, then should be 5m Ω 64 ampere-hour Rsence are measured, and ensures electric quantity monitoring meter work peace on hardware
It is complete reliable.In calibration electric quantity monitoring timing, the half with actual current as calibration value, input calibration, then now electric quantity monitoring
Meter will replace 64 Ampere currents to carry out the calculating of electric current and capacity with 32 Ampere currents, so as to meet the electricity of charging and discharging
Stream maximum is 32.767 amperes of restriction.The electric current and the data of capacity that now control unit reads all is the one of actual parameter
Half, so these data all must be multiplied by 2, really to be measured electric current.
The method that a kind of electric quantity monitoring meter of the present invention detects high current, methods described include：By actual current according to
One preset ratio is reduced, the current value after being reduced；The current value is sent to electric quantity monitoring meter, using sensing resistance
Anti- sensor detects the current value, and controls the current value and carry out putting for the second preset ratio in a zone of reasonableness
Greatly；Obtain the electric current after the amplification.This measuring method can avoid electric quantity monitoring meter in current measurement due to range model
The restriction enclosed, improves electric quantity monitoring measurement amount range of application.
The first described preset ratio in above example is 1:N, the second described preset ratio are N:1, wherein N's
It is worth the arbitrary proportion for N≤20 to be configured.At present due to the restriction of existing hardware, therefore the value of N is set to into N≤20, if
The development of later stage hardware technology, the value of above-mentioned N can also be adjusted to the value more than 20, but the N values need to be mutually fitted with hardware advances
Should, to guarantee that the technology can be realized.
Above-described electric current is I amperes, and current value I is the maximum rating of electric quantity monitoring meter, with specific reference to electricity
The model of monitoring meter is determined, and resistance value is（N×J）The current sense impedance Rsence of m Ω is the maximum current I amperes for bearing
The current sense impedance Rsence of matching.
Above operation logic of the present invention is described in detail, the explanation of above-mentioned operation logic is only intended to help and understands
The method of the present invention and its core concept；Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, in tool
Will change in body embodiment and range of application, in sum, this specification content is should not be construed as to the present invention
Restriction.
Claims (10)
1. a kind of method that electric quantity monitoring meter detects high current, it is characterised in that described method includes：
Actual current is reduced by S1 according to the first preset ratio, the current value I1 after being reduced；
S2 sends the current value I1 to electric quantity monitoring meter, detects the current value I1 using sense resistances sensor, and right
The amplification of the second preset ratio, the current value I2 after being amplified are carried out in a zone of reasonableness in the current value I1.
2. the method that electric quantity monitoring meter according to claim 1 detects high current, it is characterised in that described first is preset
Ratio is 1:N, the second described preset ratio are N:1, N≤20.
3. the method that electric quantity monitoring meter according to claim 2 detects high current, it is characterised in that described method is also wrapped
Include：
If during measurement I Ampere currents, using（N×J）The current sense impedance Rsence of m Ω, then measure（N×I）Ampere currents
When, using the current sense impedance Rsence of Jm Ω.
4. the method that electric quantity monitoring meter according to claim 3 detects high current, it is characterised in that described current value I
Maximum rated current value of the ampere for electric quantity monitoring measurement amount, described resistance value are that Jm Ω are current sense impedance Rsence's
Resistance.
5. the method that electric quantity monitoring meter according to claim 1 detects high current, it is characterised in that described method is also wrapped
Include：
One CRC is provided, the current value is verified by the CRC.
6. a kind of electric quantity monitoring meter detects the device of high current, it is characterised in that described device includes：
Reduce module, the current value for actual current is reduced according to the first preset ratio, after being reduced；
Control module, by the current value is sent to electric quantity monitoring, detects the electric current using sense resistances sensor
Being worth, and control the current value carries out the amplification of the second preset ratio in a zone of reasonableness；
Acquisition module, for obtaining the electric current after the amplification.
7. electric quantity monitoring meter according to claim 6 detects the device of high current, it is characterised in that described first is preset
Ratio is 1:N, the second described preset ratio are N:1, N≤20.
8. electric quantity monitoring meter according to claim 7 detects the device of high current, it is characterised in that described control module
It is additionally operable to：During measurement I Ampere currents, need to use（N×J）The current sense impedance Rsence of m Ω, then measure（N×I）Ampere electricity
During stream, the current sense impedance Rsence of Jm Ω need to be used.
9. electric quantity monitoring meter according to claim 8 detects the device of high current, it is characterised in that described current value I
Maximum rated current value of the ampere for electric quantity monitoring measurement amount, described resistance value are that Jm Ω are current sense impedance Rsence's
Resistance.
10. the electric quantity monitoring meter according to claim 6 or 9 detects the device of high current, it is characterised in that described device
Also include：
Module is provided, for providing a CRC, the current value is carried out by the CRC
Verification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610853491.3A CN106546923A (en) | 2016-09-27 | 2016-09-27 | The method and apparatus that a kind of electric quantity monitoring meter detects high current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610853491.3A CN106546923A (en) | 2016-09-27 | 2016-09-27 | The method and apparatus that a kind of electric quantity monitoring meter detects high current |
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| Publication Number | Publication Date |
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| CN106546923A true CN106546923A (en) | 2017-03-29 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008267832A (en) * | 2007-04-16 | 2008-11-06 | Sony Corp | Electric current measuring instrument |
| CN102830302A (en) * | 2012-08-08 | 2012-12-19 | 南车株洲电力机车有限公司 | Monitoring system and method of current collector |
| CN203012033U (en) * | 2012-08-08 | 2013-06-19 | 南车株洲电力机车有限公司 | Current collector monitoring system |
| CN103558439A (en) * | 2013-10-12 | 2014-02-05 | 华为技术有限公司 | Current detection circuit |
| CN103884900A (en) * | 2014-03-31 | 2014-06-25 | 河南理工大学 | Device and method for detecting voltages of direct current bus of variable frequency speed regulator |
| CN104977451A (en) * | 2014-04-04 | 2015-10-14 | 浙江巨磁智能技术有限公司 | Method of detecting current in a shunting way by current sensor |
-
2016
- 2016-09-27 CN CN201610853491.3A patent/CN106546923A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008267832A (en) * | 2007-04-16 | 2008-11-06 | Sony Corp | Electric current measuring instrument |
| CN102830302A (en) * | 2012-08-08 | 2012-12-19 | 南车株洲电力机车有限公司 | Monitoring system and method of current collector |
| CN203012033U (en) * | 2012-08-08 | 2013-06-19 | 南车株洲电力机车有限公司 | Current collector monitoring system |
| CN103558439A (en) * | 2013-10-12 | 2014-02-05 | 华为技术有限公司 | Current detection circuit |
| CN103884900A (en) * | 2014-03-31 | 2014-06-25 | 河南理工大学 | Device and method for detecting voltages of direct current bus of variable frequency speed regulator |
| CN104977451A (en) * | 2014-04-04 | 2015-10-14 | 浙江巨磁智能技术有限公司 | Method of detecting current in a shunting way by current sensor |
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