CN104678310B - A kind of method and apparatus for detecting battery malfunction - Google Patents
A kind of method and apparatus for detecting battery malfunction Download PDFInfo
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- CN104678310B CN104678310B CN201510034029.6A CN201510034029A CN104678310B CN 104678310 B CN104678310 B CN 104678310B CN 201510034029 A CN201510034029 A CN 201510034029A CN 104678310 B CN104678310 B CN 104678310B
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- 238000001514 detection method Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 4
- 208000032953 Device battery issue Diseases 0.000 description 3
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Abstract
The invention discloses a kind of method and apparatus for detecting battery malfunction, belong to battery technology field.Methods described includes:The voltage at battery two ends is measured at set time intervals;Instantaneous voltage of the battery when configuration switch is turned on is determined, configuration switch is the relay that storage battery power supply is controlled in ignition switch or uninterrupted power source UPS on automobile;Instantaneous voltage when configuration switch continuous several times are turned on is reduced with the propulsion of the time of determination, and when the instantaneous voltage of determination is less than the 80% of the normal voltage of battery for the last time, determines battery malfunction.It is of the invention that voltage is directly measured during the use of battery and judges whether battery fails according to the variation tendency of voltage, it can detect suitable for whether the battery in the battery and UPS on automobile fails.
Description
Technical field
The present invention relates to battery technology field, more particularly to a kind of method and apparatus for detecting battery malfunction.
Background technology
It electrical power storage can be chemical energy, it is necessary to when discharging again with the mode of charging after battery discharge that battery, which is,
The secondary battery for chemical energy being converted to electric energy, is all obtained extensively in various fields such as automobile, high power UPS UPS
Using.In actual applications, when battery malfunction, automobile be able to can not start because of electricity shortage, and high power UPS is in exchange
The effect for making load maintain normal work is not had during power cut-off, it is therefore desirable to sentence in advance to whether battery fails
It is disconnected, to change battery in time in battery malfunction.
The method of existing detection battery malfunction includes open circuit voltage method, utilizes open-circuit voltage and the charged shape of battery
Linear relationship between state (State Of Charge, abbreviation SOC), by measure it is fully charged after battery open-circuit voltage
Determine the current reserve of electricity of battery, when battery current reserve of electricity and battery standard reserve of electricity ratio be less than 80%
When, judge battery malfunction.
During the present invention is realized, inventor has found that prior art at least has problems with:
For the battery of automobile, because battery needs to power for the central processing unit of automobile, therefore battery
Open-circuit condition can not be in, it is impossible to measure the open-circuit voltage of battery, the terminal voltage of battery can only be measured.Due to battery
Linear relationship is not present between terminal voltage and SOC, while battery also has self-discharge phenomenon, open circuit voltage method is not excluded certainly
Influence of the electric discharge phenomena to SOC, therefore open circuit voltage method can not detect whether the battery of automobile fails.
The content of the invention
The problem of whether battery of automobile fails can not be detected to solve prior art, the embodiments of the invention provide
A kind of method and apparatus for detecting battery malfunction.The technical scheme is as follows:
On the one hand, the embodiments of the invention provide a kind of method for detecting battery malfunction, methods described includes:
The voltage at battery two ends is measured at set time intervals;
Determine instantaneous voltage of the battery when configuration switch is turned on, the configuration switch be ignition switch on automobile or
The relay of control storage battery power supply in person's uninterrupted power source UPS;
The instantaneous voltage when the configuration switch continuous several times are turned on is reduced with the propulsion of the time of determination, and most
When the instantaneous voltage once determined afterwards is less than the 80% of the normal voltage of the battery, the battery malfunction is determined;
The instantaneous voltage that battery is determined when configuration switch is turned on, including:
When the double difference in voltage measured be less than setting value when, will be double in after once measure described in
Voltage is used as the instantaneous voltage.
In a kind of possible implementation of the present invention, methods described also includes:
Show the curve of the voltage composition measured every time.
In another possible implementation of the invention, described is repeatedly 5 times.
In another possible implementation of the invention, methods described also includes:
After the determination battery malfunction, alarm is sent.
On the other hand, the embodiments of the invention provide a kind of device for detecting battery malfunction, described device includes:
Voltage measurement module, the voltage for measuring battery two ends at set time intervals;
Voltage determination module, for determining instantaneous voltage of the battery when configuration switch is turned on, the configuration switch is
The relay of control storage battery power supply in ignition switch or uninterrupted power source UPS on automobile;
Fail determining module, for the instantaneous voltage when the configuration switch continuous several times are turned on the time of determination
Propulsion and reduce, and last time determine the instantaneous voltage be less than the battery normal voltage 80% when, really
The fixed battery malfunction;
The voltage determination module is used for,
When the double difference in voltage measured be less than setting value when, will be double in after once measure described in
Voltage is used as the instantaneous voltage.
In a kind of possible implementation of the present invention, described device also includes:
Display module, the curve of the voltage composition measured every time for showing.
In another possible implementation of the invention, described is repeatedly 5 times.
In another possible implementation of the invention, described device also includes:
Alarm module, for after the determination battery malfunction, sending alarm.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is:
By measuring the voltage at battery two ends at set time intervals, determine battery when configuration switch is turned on
Instantaneous voltage, the instantaneous voltage when configuration switch continuous several times are turned on is reduced with the propulsion of the time of determination, and last time
When the instantaneous voltage of determination is less than the 80% of the normal voltage of battery, battery malfunction, the directly use in battery are determined
During measurement voltage and judge whether battery fails according to the variation tendency of voltage, can detect suitable for the storage on automobile
Whether the battery in battery and UPS fails.And be instantaneous voltage when being turned on according to configuration switch continuous several times with determination
The variation tendency of the propulsion of time is judged, fully takes into account the measured value of battery in use by a variety of external
The influence of factor, it is to avoid one-shot measurement judge caused by accidental error, improve the degree of accuracy of battery malfunction judgement.Separately
Outside, it is only necessary to determine instantaneous voltage when configuration switch continuous several times are turned on, you can judge whether battery fails, reduce inspection
The difficulty of battery malfunction is surveyed, it is simple and convenient easy.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of flow chart of the method for detection battery malfunction that the embodiment of the present invention one is provided;
Fig. 2 is the schematic diagram for the battery-operated circuit that the embodiment of the present invention one is provided;
Fig. 3 is a kind of structural representation of the device for detection battery malfunction that the embodiment of the present invention two is provided.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment one
The embodiments of the invention provide a kind of method for detecting battery malfunction, it is adaptable to battery on automobile and not between
Battery in power-off source (Uninterruptible Power Supply, abbreviation UPS), referring to Fig. 1, this method includes:
Step 101:The voltage at battery two ends is measured at set time intervals.
For example, the time interval of setting can be 20ms.
Step 102:Instantaneous voltage of the battery when configuration switch is turned on is determined, configuration switch is that the igniting on automobile is opened
Pass or the relay of the interior control storage battery power supplies of UPS.
It is readily appreciated that, during automotive ignition (ignition switch conducting), battery is needed for generator powered, UPS alternating current
During source power-off (relay is switched to that one end of storage battery power supply), battery needs to power for power supply unit.For battery
For, when configuration switch is turned on, the electric current increase of circuit where increasing delivery, battery is required for, battery two ends
Voltage (instantaneous voltage) is reduced, and is reached minimum.
More specific description is carried out with reference to Fig. 2.Fig. 2 is the schematic diagram of battery-operated circuit, and E represents battery,
R0 represents the internal resistance of battery.When battery applications are on automobile, K is ignition switch, and RL1 represents electrical equipment on automobile (as received
Sound machine, headlight) equivalent resistance, RL2 represents the equivalent resistance of engine;When battery applications are in UPS, K represents UPS's
The relay that AC power is closed when powering off, RL1 represents the equivalent resistance of UPS internal consumptions, and RL2 represents UPS power supply units
Equivalent resistance.Figure it is seen that the moment closed in ignition switch or relay K, the resistance of circuit reduces, electric current increase,
The voltage at battery two ends reaches minimum (assuming that resistance sizes are constant).
It should be noted that UPS is that battery (being generally plumbic acid maintenance-free battery) is connected with main frame, pass through main frame
Direct current is converted into the system equipment of civil power by the modular circuits such as inverter.Typically when civil power (AC power) input is normal,
UPS will be supplied to load to use after civil power voltage stabilizing, and UPS now is exactly an electric main voltage-stablizer, while UPS is also to UPS
Interior battery battery charging;When commercial power interruption (forced outage), UPS by the direct current energy of battery, passes through inversion immediately
The square normal load of zero switch transition continues to supply 220V alternating currents, load is maintained normal work, and protect load soft and hardware
It is without damage.
Specifically, the step 102 can include:
When the double difference in voltage measured is less than setting value, will be double in after the voltage that once measures as
Instantaneous voltage.
It is to be appreciated that in the specific implementation, it is difficult to only measurement ignition switch or relay close the voltage of moment.Due to
Ignition switch or relay closure transient voltage have a reduction by a relatively large margin, pass through the time measurement voltage every setting
(step 101), and using the rapid drawdown for measuring ignition switch or relay closure transient voltage, determine instantaneous voltage, it is possible to achieve
Measurement to instantaneous voltage.That is, every time measurement instantaneous voltage when, before and after automotive ignition or UPS AC power
It is front and rear, multiple measurement all is carried out to the voltage of battery, then using the voltage swing of measurement, from the voltage repeatedly measured
Determine instantaneous voltage.Furthermore it is also possible to utilize the voltage condition before and after instantaneous voltage, the more accurate change for determining battery tension
Trend, to determine whether battery fails offer reference.
In actual applications, the voltage at battery two ends can be first gathered using modulate circuit, and the voltage of collection is entered
Row processing is so as to fit in analog-digital converter (ADC) conversion range.For example, the voltage range of collection is 0-12V, mould
The conversion range of number converter is 0-5V, it is therefore desirable to certain diminution is carried out to voltage, and such as 12V voltages switch to 5V voltages, 6V
Voltage switchs to 2.5V voltages, and 0V voltages are still 0V.Voltage carries out analog-to-digital conversion by analog-digital converter after handling again, finally
Control source microprocessor after analog-to-digital conversion is subjected to the judgement whether battery fails.
Step 103:Instantaneous voltage when configuration switch continuous several times are turned on is reduced with the propulsion of the time of determination, and most
When the instantaneous voltage once determined afterwards is less than the 80% of the normal voltage of battery, battery malfunction is determined.
Using the variation tendency of the instantaneous voltage repeatedly measured, determine whether battery fails.For example, battery two ends
Normal voltage is 12V, then the instantaneous voltage determined last time is compared size with 12V*80%=9V.And for example, battery two
The normal voltage at end is 24V, then the instantaneous voltage determined last time is compared size with 24V*80%=18V.
It should be noted that the present invention is used as the standard judged, mainly base using the 80% of the normal voltage of battery
Set in the experience of national standard and those skilled in the art.
It is to be appreciated that when being less than the 80% of the normal voltage at battery two ends in the instantaneous voltage once determined, having can
It can be the temporary transient not enough power supply of battery, i.e. battery due to use before and not supplement electricity in time, and cause instantaneous
Voltage is less than the 80% of the normal voltage at battery two ends, and now battery does not fail, with the progress of charging, next time
The instantaneous voltage of determination may be greater than the 80% of the normal voltage at battery two ends.For example, such as with the propulsion of time of measuring,
The instantaneous voltage of determination is followed successively by 8.9V, 9.8V, then illustrates that now battery does not fail, simply the temporary transient electricity of battery
It is not enough.That is, the instantaneous voltage when configuration switch continuous several times are turned on is not reduced with the propulsion of the time of determination, or
When the instantaneous voltage that person's last time is determined is more than or equal to the 80% of the normal voltage at battery two ends, judge that battery does not have
Failure.
Certainly the normal voltage for being also possible to be due to battery malfunction and causing instantaneous voltage to be less than battery two ends
80%.Because before battery malfunction, the instantaneous voltage at battery two ends can be reduced constantly, such as with the propulsion of the time of determination,
The instantaneous voltage of determination is followed successively by 9.8V, 9.7V, 9.5V, 9.2V, 8.9V, therefore can be turned on according to configuration switch continuous several times
When the variation tendency of instantaneous voltage judge whether battery fails.If instantaneous voltage when configuration switch continuous several times are turned on
Reduced with the propulsion of the time of determination, and the instantaneous voltage that last time is determined is less than the 80% of the normal voltage at battery two ends
When, judge battery malfunction.
In actual applications, memory can be set to preserve instantaneous voltage when configuration switch continuous several times are turned on.When this
The instantaneous voltage of secondary determination is less than or equal to the last instantaneous voltage determined, then preserves the instantaneous voltage of this determination.If
The capacity of memory reaches maximum, then in the instantaneous voltage for deleting preservation, the instantaneous voltage once determined at first, to preserve this
The instantaneous voltage of secondary determination.When the instantaneous voltage of this determination is more than the instantaneous voltage of last determination, then it will determine before
Instantaneous voltage all delete, and preserve the instantaneous voltage of this determination.
Alternatively, it can be repeatedly 5 times.It is demonstrated experimentally that when being repeatedly 5 times, pendulous frequency being reduced as far as possible, money is saved
In the case of source, determine that the accuracy of battery is higher.
In another implementation of the present embodiment, this method can also include:
It is determined that after battery malfunction, sending alarm.
It is to be appreciated that it is determined that after battery malfunction, sending alarm, user can change the electric power storage of failure in time
Pond, effectively prevent UPS when leading to not start automobile or AC power power-off due to battery malfunction and do not have makes to bear
Carry the effect for maintaining normal work.
In another implementation of the present embodiment, this method can also include:
Show the curve of the voltage composition measured every time.
It is to be appreciated that the curve for the voltage composition that display is measured every time, can make user intuitively recognize battery two
The variation tendency of the voltage at end, predicts whether battery fails in advance.
The embodiment of the present invention determines battery in setting by measuring the voltage at battery two ends at set time intervals
Instantaneous voltage during switch conduction, the instantaneous voltage when configuration switch continuous several times are turned on drops with the propulsion of the time of determination
It is low, and when the instantaneous voltage of determination is less than the 80% of the normal voltage of battery for the last time, determines battery malfunction, directly exist
Voltage is measured during the use of battery and judges whether battery fails according to the variation tendency of voltage, can be detected applicable
Whether failed in the battery in the battery and UPS on automobile.And be wink when being turned on according to configuration switch continuous several times
When voltage judged with the variation tendency of propulsion of the time of determination, fully take into account the measured value of battery in use
Influenceed by a variety of external factors, it is to avoid one-shot measurement judge caused by accidental error, improve battery malfunction and sentence
The disconnected degree of accuracy.In addition, it is only necessary to determine instantaneous voltage when configuration switch continuous several times are turned on, you can whether judge battery
Failure, reduces the difficulty of detection battery malfunction, simple and convenient easy.
Embodiment two
The embodiments of the invention provide a kind of device for detecting battery malfunction, it is adaptable to which the detection that embodiment one is provided stores
The method of battery failure, referring to Fig. 3, the device includes:
Voltage measurement module 201, the voltage for measuring battery two ends at set time intervals;
Voltage determination module 202, for determining instantaneous voltage of the battery when configuration switch is turned on, configuration switch is vapour
The relay of control storage battery power supply in ignition switch or UPS on car;
Fail determining module 203, for the pushing away with the time of determination of the instantaneous voltage when configuration switch continuous several times are turned on
And then reduce, and when the instantaneous voltage of determination is less than the 80% of the normal voltage of battery for the last time, determine battery malfunction.
In actual applications, voltage measurement module 201 can realize that voltage is determined using modulate circuit and analog-digital converter
Module 202 and failure determining module 203 can be realized using microprocessor.
Alternatively, it can be repeatedly 5 times.
In a kind of implementation of the present embodiment, voltage determination module 202 can be used for,
When the double difference in voltage measured is less than setting value, will be double in after the voltage that once measures as
Instantaneous voltage.
In another implementation of the present embodiment, the device can also include:
Display module 204, the curve of the voltage composition measured every time for showing.
In actual applications, display module 204 can use display screen.
In another implementation of the present embodiment, the device can also include:
Alarm module 205, for it is determined that after battery malfunction, sending alarm.
In actual applications, alarm module 205 can include buzzer, indicator lamp or display screen.
The embodiment of the present invention determines battery in setting by measuring the voltage at battery two ends at set time intervals
Instantaneous voltage during switch conduction, the instantaneous voltage when configuration switch continuous several times are turned on drops with the propulsion of the time of determination
It is low, and when the instantaneous voltage of determination is less than the 80% of the normal voltage of battery for the last time, determines battery malfunction, directly exist
Voltage is measured during the use of battery and judges whether battery fails according to the variation tendency of voltage, can be detected applicable
Whether failed in the battery in the battery and UPS on automobile.And be wink when being turned on according to configuration switch continuous several times
When voltage judged with the variation tendency of propulsion of the time of determination, fully take into account the measured value of battery in use
Influenceed by a variety of external factors, it is to avoid one-shot measurement judge caused by accidental error, improve battery malfunction and sentence
The disconnected degree of accuracy.In addition, it is only necessary to determine instantaneous voltage when configuration switch continuous several times are turned on, you can whether judge battery
Failure, reduces the difficulty of detection battery malfunction, simple and convenient easy.
It should be noted that:Above-described embodiment provide detection battery malfunction device detect battery malfunction when,
Only with the division progress of above-mentioned each functional module for example, in practical application, as needed can distribute above-mentioned functions
Completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, it is described above to complete
All or part of function.In addition, the device for the detection battery malfunction that above-described embodiment is provided and detection battery malfunction
Embodiment of the method belongs to same design, and it implements process and refers to embodiment of the method, repeats no more here.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
One of ordinary skill in the art will appreciate that realizing that all or part of step of above-described embodiment can be by hardware
To complete, the hardware of correlation can also be instructed to complete by program, described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only storage, disk or CD etc..
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (8)
1. a kind of method for detecting battery malfunction, it is characterised in that methods described includes:
The voltage at battery two ends is measured at set time intervals;
Instantaneous voltage of the battery when configuration switch is turned on is determined, the configuration switch is for the ignition switch on automobile or not
The relay of control storage battery power supply in uninterruptible power UPS;
The instantaneous voltage when the configuration switch continuous several times are turned on is reduced with the propulsion of the time of determination, and last
When the instantaneous voltage of secondary determination is less than the 80% of the normal voltage of the battery, the battery malfunction is determined;
The instantaneous voltage that battery is determined when configuration switch is turned on, including:
When the double difference in voltage measured is less than setting value, will be double in after the voltage that once measures
It is used as the instantaneous voltage.
2. according to the method described in claim 1, it is characterised in that methods described also includes:
Show the curve of the voltage composition measured every time.
3. method according to claim 1 or 2, it is characterised in that described is repeatedly 5 times.
4. method according to claim 1 or 2, it is characterised in that methods described also includes:
After the determination battery malfunction, alarm is sent.
5. a kind of device for detecting battery malfunction, it is characterised in that described device includes:
Voltage measurement module, the voltage for measuring battery two ends at set time intervals;
Voltage determination module, for determining instantaneous voltage of the battery when configuration switch is turned on, the configuration switch is automobile
On ignition switch or uninterrupted power source UPS in control storage battery power supply relay;
Fail determining module, for the pushing away with the time of determination of the instantaneous voltage when the configuration switch continuous several times are turned on
And then reduce, and when the instantaneous voltage of determination is less than the 80% of the normal voltage of the battery for the last time, determine institute
State battery malfunction;
The voltage determination module is used for,
When the double difference in voltage measured is less than setting value, will be double in after the voltage that once measures
It is used as the instantaneous voltage.
6. device according to claim 5, it is characterised in that described device also includes:
Display module, the curve of the voltage composition measured every time for showing.
7. the device according to claim 5 or 6, it is characterised in that described is repeatedly 5 times.
8. the device according to claim 5 or 6, it is characterised in that described device also includes:
Alarm module, for after the determination battery malfunction, sending alarm.
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CN104914382B (en) * | 2015-06-24 | 2017-09-19 | 安徽江淮汽车集团股份有限公司 | A kind of detection method of accumulator capacity |
CN106680720B (en) * | 2015-11-11 | 2019-07-02 | 中国移动通信集团公司 | Vehicular accumulator cell early warning failure system and method based on car networking |
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CN1205083A (en) * | 1995-11-29 | 1999-01-13 | 欧姆龙株式会社 | Device and method for estimating remaining life of battery |
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JP2004144621A (en) * | 2002-10-24 | 2004-05-20 | B-Best Inc | Storage battery diagnostic device |
JP2014029059A (en) * | 2012-07-31 | 2014-02-13 | Shinsei Seiki Co Ltd | Automatic control device of electric opening/closing machine |
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CN1161084A (en) * | 1994-10-21 | 1997-10-01 | 布劳恩股份有限公司 | Process for determining the state of charge of an accumulator |
CN1205083A (en) * | 1995-11-29 | 1999-01-13 | 欧姆龙株式会社 | Device and method for estimating remaining life of battery |
CN2330999Y (en) * | 1998-03-27 | 1999-07-28 | 金剑杭 | Accumulator automatic on-line detecting instrument |
CN2625211Y (en) * | 2003-07-03 | 2004-07-14 | 刘瑞桂 | Real time monitor and acousto-optic alarm apparatus of car battery |
CN1614439A (en) * | 2003-11-04 | 2005-05-11 | 睿阳科技股份有限公司 | Detector of accumulator |
CN201029202Y (en) * | 2006-12-07 | 2008-02-27 | 徐志强 | Vehicle accumulator protector |
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