CN104714187B - Power battery abnormality determination method and system - Google Patents
Power battery abnormality determination method and system Download PDFInfo
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- CN104714187B CN104714187B CN201510127345.8A CN201510127345A CN104714187B CN 104714187 B CN104714187 B CN 104714187B CN 201510127345 A CN201510127345 A CN 201510127345A CN 104714187 B CN104714187 B CN 104714187B
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Abstract
The invention discloses a kind of power battery abnormality determination methods and system, this method to include：The correspondence of the service life and abnormality threshold value of reference driving force battery determines corresponding abnormality threshold value of currently used time；Obtain the battery status information of the power battery；The magnitude relationship in each parameter and the abnormality threshold value between respective threshold value in the battery status information is judged respectively；When at least one parameter is greater than or equal to its corresponding threshold value in the voltage parameter, current parameters and temperature parameter, determine that the power battery is abnormal.Above technical scheme has effectively held the relationship of service time of battery and ability to bear; and then it efficiently solves in the prior art and power battery easily occurs and have arrived to bear the limit; but no abnormal due to being not up to fixed abnormality threshold value, the problem of can not efficiently using and protect power battery.
Description
Technical field
The present invention relates to battery protection technical fields, more particularly to a kind of power battery abnormality determination method and system.
Background technology
Now, it in order to ensure in new-energy automobile that power battery can be provided and storage energy with optimum state, needs to dynamic
The battery status information (including voltage, temperature and electric current) of power battery in a state of use is monitored, and judges power electric with this
Whether pond is abnormal.
In the prior art, the fixed abnormality threshold value of generally use one come determine power battery occur it is abnormal with
No, however, in power battery entirely using in life cycle, power battery would generally be due to high temperature, vibrations, heavy current impact
And/or the influences such as overvoltage impact cause performance to decline so that different usage times correspond to different ability to bears, at this moment, such as
Fruit still judges the exception of power battery using fixed abnormality threshold value as standard, power battery easily occurs and have arrived to bear
The limit, it is but no abnormal due to being not up to fixed abnormality threshold value, it can not efficiently use and protect power battery.
Invention content
In view of this, the present invention provides a kind of power battery abnormality determination method and system, to solve in the prior art
Easily there is power battery and have arrived to bear the limit, but due to being not up to fixed abnormality threshold value and no abnormal, nothing
The problem of method efficiently uses and protects power battery.
In order to solve the above technical problems, the present invention provides a kind of power battery abnormality determination method, including：
The correspondence of the service life and abnormality threshold value of reference driving force battery determines that the currently used time is corresponding
Abnormality threshold value；Wherein, the abnormality threshold value includes voltage threshold, current threshold and temperature threshold；
Obtain the battery status information of the power battery；Wherein, the battery status information includes voltage parameter, electric current
Parameter and temperature parameter；
Judge respectively in the battery status information in each parameter and the abnormality threshold value between respective threshold value
Magnitude relationship；
When at least one parameter is greater than or equal to its corresponding threshold in the voltage parameter, current parameters and temperature parameter
When value, determine that the power battery is abnormal, otherwise, it determines the power battery no exceptions.
In above-mentioned determination method, it is preferred that further include：
With reference to the correspondence of the service life and abnormal redundancy time threshold value of the power battery, when determining described current
Between corresponding redundancy time threshold value；Wherein, the redundancy time threshold value includes voltage redundancy time threshold value, current redundant time threshold
Value and temperature redundancy time threshold value；
Judge respectively in the battery status information in each parameter and the abnormality threshold value between respective threshold value
Magnitude relationship；
When the voltage/current/temperature parameter is greater than or equal to the voltage/current/temperature threshold, make voltage/electricity
Otherwise stream/temperature count parameter sets the voltage/current/temperature count parameter as 0 plus numerical value 1；
Judge between the voltage/current/temperature count parameter and the voltage/current/temperature redundancy time threshold value
Magnitude relationship；
When at least one count parameter is more than in the voltage count parameter, electric current count parameter and temperature count parameter
Or when equal to its corresponding redundancy time threshold value, determine that the power battery is abnormal, otherwise, it determines the power battery is not
It is abnormal.
In above-mentioned determination method, it is preferred that when determining that the power battery is abnormal, further include：
Send out corresponding abnormality warnings sound.
In above-mentioned determination method, it is preferred that when determining that the power battery is abnormal, further include：
Show corresponding abnormal show information.
In above-mentioned determination method, it is preferred that further include：
The battery status information got is stored, so that staff checks in the future.
The present invention also provides a kind of power battery abnormal determination systems, including：
Abnormality threshold value determination unit, the service life pass corresponding with abnormality threshold value for reference driving force battery
System, determines corresponding abnormality threshold value of currently used time；Wherein, the abnormality threshold value includes voltage threshold, electric current
Threshold value and temperature threshold；
Parameter acquiring unit, the battery status information for obtaining the power battery；Wherein, the battery status information
Including voltage parameter, current parameters and temperature parameter；
First abnormal deciding means, for judging each parameter and the abnormality in the battery status information respectively
Magnitude relationship in threshold value between respective threshold value；
First abnormal determination unit, for joining when at least one in the voltage parameter, current parameters and temperature parameter
When number is greater than or equal to its corresponding threshold value, determine that the power battery is abnormal, otherwise, it determines the power battery is not sent out
It is raw abnormal.
In above-mentioned decision-making system, it is preferred that further include：
Redundancy time threshold value determination unit, for the service life and exception redundancy time threshold value with reference to the power battery
Correspondence, determine the corresponding redundancy time threshold value of the current time；Wherein, the redundancy time threshold value includes that voltage is superfluous
Remaining time threshold, current redundant time threshold and temperature redundancy time threshold value；
Counting unit judges that the voltage/current/temperature parameter is more than or waits for working as first abnormal deciding means
When voltage/current/the temperature threshold, voltage/current/temperature count parameter is made otherwise to set the electricity plus numerical value 1
Pressure/electric current/temperature count parameter is 0；
Second abnormal deciding means, for judging the voltage/current/temperature count parameter and the voltage/current/temperature
Spend the magnitude relationship between redundancy time threshold value；
Second abnormal determination unit, for when in the voltage count parameter, electric current count parameter and temperature count parameter
When at least one count parameter is greater than or equal to its corresponding redundancy time threshold value, determine that the power battery is abnormal,
Otherwise, it determines the power battery no exceptions.
In above-mentioned decision-making system, it is preferred that further include：
Alarm unit, for when determining that the power battery is abnormal, sending out corresponding abnormality warnings sound.
In above-mentioned decision-making system, it is preferred that further include：
Display unit, for when determining that the power battery is abnormal, showing corresponding abnormal show information.
In above-mentioned decision-making system, it is preferred that further include：
Storage unit, for storing the battery status information got, so that staff checks in the future.
In the above power battery abnormality determination method provided by the present invention and system, the service life of reference driving force battery
With the correspondence of abnormality threshold value, determine that corresponding abnormality threshold value of currently used time (characterizes power battery pair
The ability to bear of voltage, electric current and temperature), then the battery status information got is judged respectively, so that it is determined that dynamic
Whether power battery is abnormal, the relationship of service time of battery and ability to bear has effectively been held, and then has been efficiently solved existing
Have in technology and power battery easily occur and have arrived to bear the limit, is not found due to being not up to fixed abnormality threshold value but
It is abnormal, the problem of can not efficiently using and protect power battery.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of flow chart of power battery abnormality determination method embodiment 1 of the invention；
Fig. 2 is a kind of flow chart of power battery abnormality determination method embodiment 2 of the invention；
Fig. 3 is a kind of structure diagram schematic diagram of power battery abnormal determination system embodiment 1 of the invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Core of the invention is to provide a kind of power battery abnormality determination method and system, to solve easily to go out in the prior art
Existing power battery, which has arrived at, bears the limit, but due to being not up to fixed abnormality threshold value and no abnormal, Wu Fagao
The problem of using and protect power battery to effect.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
With reference to figure 1, a kind of flow chart of power battery abnormality determination method embodiment 1 of the invention, the judgement side are shown
Method can specifically include following steps：
Step S100, the correspondence of the service life of reference driving force battery and abnormality threshold value determines currently used
Time corresponding abnormality threshold value；Wherein, the abnormality threshold value includes voltage threshold, current threshold and temperature threshold；
Specifically, the primary setting condition for being determined as power battery abnormality determination method of the present invention of abnormality threshold value,
It needs to test power battery performance before determining, obtains power battery state (voltage, temperature, electric current) and entirely using
The relation table of abnormality threshold value and service life in life cycle table look-up setting by current power service time of battery
Set the abnormality threshold value of current power battery.
It should be noted that in the present invention, the abnormality threshold value of power battery is primarily directed to the voltage of battery, electricity
Stream and temperature, and when for these three physical quantitys as execution object performed content be it is relatively independent, in other words
It says, carries out side by side；
Step S101, the battery status information of the power battery is obtained；Wherein, the battery status information includes voltage
Parameter, current parameters and temperature parameter；
In the present invention, the battery status information got can be stored, so that staff checks in the future.
Step S102, judge respectively in the battery status information each parameter with it is respective in the abnormality threshold value
Magnitude relationship between threshold value；When at least one parameter is more than or waits in the voltage parameter, current parameters and temperature parameter
When its corresponding threshold value, S103 is entered step, otherwise, enters step S104；
It should be strongly noted that above-mentioned in the present invention " when in the voltage parameter, current parameters and temperature parameter at least
There are one parameter be greater than or equal to its corresponding threshold value when " threshold decision be not limited in each parameter in battery status information
It the case where " being greater than or equal to " respective abnormality threshold value, equally there is also " being less than or equal to " abnormality threshold values, be according to
It is configured according to battery performance itself, does not do considered critical herein.
Step S103, determine that the power battery is abnormal；
In the present invention, when determining that the power battery is abnormal, corresponding abnormality warnings sound can be sent out, and/or
Corresponding abnormal show information is shown, to remind staff that power battery is abnormal in time.
Step S104, the power battery no exceptions is determined.
In the present invention, after determining the power battery no exceptions, return to step S101 continues to obtain battery shape
State information in practical applications can be with timing acquisition battery status information.
In the above power battery abnormality determination method provided by the present invention and system, the service life of reference driving force battery
With the correspondence of abnormality threshold value, determine that corresponding abnormality threshold value of currently used time (characterizes power battery pair
The ability to bear of voltage, electric current and temperature), then the battery status information got is judged respectively, so that it is determined that dynamic
Whether power battery is abnormal, the relationship of service time of battery and ability to bear has effectively been held, and then has been efficiently solved existing
Have in technology and power battery easily occur and have arrived to bear the limit, is not found due to being not up to fixed abnormality threshold value but
It is abnormal, the problem of can not efficiently using and protect power battery.
With reference to figure 2, shows a kind of flow chart of power battery abnormality determination method embodiment 2 of the invention, getting
After the battery status information of power battery, it can also include the following steps：
Step S200, it with reference to the correspondence of the service life of the power battery and abnormal redundancy time threshold value, determines
The corresponding redundancy time threshold value of the current time；Wherein, the redundancy time threshold value includes voltage redundancy time threshold value, electric current
Redundancy time threshold value and temperature redundancy time threshold value；
In practical applications, it before the abnormal redundancy time determination of battery, needs to test power battery performance, obtain
Abnormality (voltage, temperature and electric current) of the power battery state (voltage, temperature and electric current) in entirely using life cycle
The relation table of redundancy time threshold value and service life carries out setting current power electricity of tabling look-up by current power service time of battery
Abnormality (voltage, temperature and electric current) the redundancy time threshold value in pond.
Step S201, judge respectively in the battery status information each parameter with it is respective in the abnormality threshold value
Magnitude relationship between threshold value；When the voltage/current/temperature parameter is greater than or equal to the voltage/current/temperature threshold
When, S202 is entered step, otherwise, enters step S203；
Step S202, so that voltage/current/temperature count parameter is added numerical value 1, enter step S204；
Step S203, the voltage/current/temperature count parameter is set as 0, enters step S204；
Step S204, judge the voltage/current/temperature count parameter and the voltage/current/temperature redundancy time threshold
Magnitude relationship between value；When at least one in the voltage count parameter, electric current count parameter and temperature count parameter is counted
When number parameter is greater than or equal to its corresponding redundancy time threshold value, S205 is entered step, otherwise, enters step S206；
In the application, (voltage, electric current and temperature) redundancy time threshold value is introduced, is in order to avoid there is battery due to some
Ectocine transient voltage/electric current/temperature value increases (being also likely to be to reduce), when restoring normal again within the period of permission
The erroneous judgement of (being not to be in abnormality for a long time), improves the validity and practicability of abnormal determination.
Step S205, determine that the power battery is abnormal；
Step S206, the power battery no exceptions is determined.
In the present invention, after determining the power battery no exceptions, return to step S101 continues to obtain battery shape
State information.
To sum up, the present invention sets different judgment thresholds by power battery abnormality in entirely using life cycle
Failure exception diagnosis is carried out with redundancy time, can preferably power battery performance be protected and be limited, to further
Improve the usage time and efficiency of power battery.
Corresponding with a kind of power battery abnormality determination method embodiment 1 of aforementioned present invention, the present invention also provides one kind
Power battery abnormal determination system embodiment 1, with reference to figure 3, which may include：
Abnormality threshold value determination unit 101, pair of service life and abnormality threshold value for reference driving force battery
It should be related to, determine corresponding abnormality threshold value of currently used time；Wherein, the abnormality threshold value include voltage threshold,
Current threshold and temperature threshold；
Parameter acquiring unit 102, the battery status information for obtaining the power battery；Wherein, the battery status
Information includes voltage parameter, current parameters and temperature parameter；
First abnormal deciding means 103, for judging each parameter and the exception in the battery status information respectively
Magnitude relationship in state threshold between respective threshold value；
First abnormal determination unit 104, for when at least one in the voltage parameter, current parameters and temperature parameter
When parameter is greater than or equal to its corresponding threshold value, determine that the power battery is abnormal, otherwise, it determines the power battery is not
It is abnormal.
In the application, above-mentioned decision-making system 101 can also include：
Redundancy time threshold value determination unit, for the service life and exception redundancy time threshold value with reference to the power battery
Correspondence, determine the corresponding redundancy time threshold value of the current time；Wherein, the redundancy time threshold value includes that voltage is superfluous
Remaining time threshold, current redundant time threshold and temperature redundancy time threshold value；
Counting unit judges that the voltage/current/temperature parameter is more than or waits for working as first abnormal deciding means
When voltage/current/the temperature threshold, voltage/current/temperature count parameter is made otherwise to set the electricity plus numerical value 1
Pressure/electric current/temperature count parameter is 0；
Second abnormal deciding means, for judging the voltage/current/temperature count parameter and the voltage/current/temperature
Spend the magnitude relationship between redundancy time threshold value；
Second abnormal determination unit, for when in the voltage count parameter, electric current count parameter and temperature count parameter
When at least one count parameter is greater than or equal to its corresponding redundancy time threshold value, determine that the power battery is abnormal,
Otherwise, it determines the power battery no exceptions.
In the application, above-mentioned decision-making system 101 can also include：
Alarm unit, for when determining that the power battery is abnormal, sending out corresponding abnormality warnings sound.
In the application, above-mentioned decision-making system 101 can also include：
Display unit, for when determining that the power battery is abnormal, showing corresponding abnormal show information.
In the application, above-mentioned decision-making system 101 can also include：
Storage unit, for storing the battery status information got, so that staff checks in the future.
It should be noted that each embodiment in this specification is described in a progressive manner, each embodiment weight
What point illustrated is all the difference with other embodiments, and the same or similar parts between the embodiments can be referred to each other.
For system class embodiment, since it is basically similar to the method embodiment, so describe fairly simple, related place ginseng
See the part explanation of embodiment of the method.
Power battery abnormality determination method provided by the present invention and system are described in detail above.It answers herein
With specific case, principle and implementation of the present invention are described, and the explanation of above example is only intended to help to manage
Solve the method and its core concept of the present invention.It should be pointed out that for those skilled in the art, not departing from
, can be with several improvements and modifications are made to the present invention under the premise of the principle of the invention, these improvement and modification also fall into this hair
In bright scope of the claims.
Claims (6)
1. a kind of power battery abnormality determination method, which is characterized in that including：
The correspondence of the service life and abnormality threshold value of reference driving force battery determines corresponding exception of currently used time
State threshold；Wherein, the abnormality threshold value includes voltage threshold, current threshold and temperature threshold；
Obtain the battery status information of the power battery；Wherein, the battery status information includes voltage parameter, current parameters
And temperature parameter；
Judge respectively big between respective threshold value in each parameter and the abnormality threshold value in the battery status information
Small relationship；
When at least one parameter is greater than or equal to its corresponding threshold value in the voltage parameter, current parameters and temperature parameter
When, determine that the power battery is abnormal, otherwise, it determines the power battery no exceptions；
When determining that the power battery is abnormal, further include：
Send out corresponding abnormality warnings sound；
When determining that the power battery is abnormal, further include：
Show corresponding abnormal show information.
2. determination method as described in claim 1, which is characterized in that further include：
With reference to the correspondence of the service life and abnormal redundancy time threshold value of the power battery, the current time pair is determined
The redundancy time threshold value answered；Wherein, the redundancy time threshold value include voltage redundancy time threshold value, current redundant time threshold and
Temperature redundancy time threshold value；
Judge respectively big between respective threshold value in each parameter and the abnormality threshold value in the battery status information
Small relationship；
When the voltage/current/temperature parameter is greater than or equal to the voltage/current/temperature threshold, make voltage/current/temperature
Otherwise degree count parameter sets the voltage/current/temperature count parameter as 0 plus numerical value 1；
Judge the size between the voltage/current/temperature count parameter and the voltage/current/temperature redundancy time threshold value
Relationship；
When at least one count parameter is more than or waits in the voltage count parameter, electric current count parameter and temperature count parameter
When its corresponding redundancy time threshold value, determine that the power battery is abnormal, otherwise, it determines the power battery does not occur
It is abnormal.
3. the determination method as described in claims 1 or 2 any one, which is characterized in that further include：
The battery status information got is stored, so that staff checks in the future.
4. a kind of power battery abnormal determination system, which is characterized in that including：
Abnormality threshold value determination unit, the correspondence of service life and abnormality threshold value for reference driving force battery,
Determine corresponding abnormality threshold value of currently used time；Wherein, the abnormality threshold value includes voltage threshold, current threshold
And temperature threshold；
Parameter acquiring unit, the battery status information for obtaining the power battery；Wherein, the battery status information includes
Voltage parameter, current parameters and temperature parameter；
First abnormal deciding means, for judging each parameter and the abnormality threshold value in the battery status information respectively
In magnitude relationship between respective threshold value；
First abnormal determination unit is big for working as at least one parameter in the voltage parameter, current parameters and temperature parameter
In or equal to its corresponding threshold value when, determine that the power battery is abnormal, otherwise, it determines the power battery do not occur it is different
Often；
Alarm unit, for when determining that the power battery is abnormal, sending out corresponding abnormality warnings sound；
Display unit, for when determining that the power battery is abnormal, showing corresponding abnormal show information.
5. decision-making system as claimed in claim 4, which is characterized in that further include：
Redundancy time threshold value determination unit, pair for service life and abnormal redundancy time threshold value with reference to the power battery
It should be related to, determine the corresponding redundancy time threshold value of the current time；Wherein, when the redundancy time threshold value includes voltage redundancy
Between threshold value, current redundant time threshold and temperature redundancy time threshold value；
Counting unit, for judging that the voltage/current/temperature parameter is greater than or equal to institute when first abnormal deciding means
When stating voltage/current/temperature threshold, voltage/current/temperature count parameter is made otherwise to set the voltage/electricity plus numerical value 1
Stream/temperature count parameter is 0；
Second abnormal deciding means, for judging that the voltage/current/temperature count parameter and the voltage/current/temperature are superfluous
Magnitude relationship between remaining time threshold；
Second abnormal determination unit, for working as in the voltage count parameter, electric current count parameter and temperature count parameter at least
When being greater than or equal to its corresponding redundancy time threshold value there are one count parameter, determine that the power battery is abnormal, otherwise,
Determine the power battery no exceptions.
6. the decision-making system as described in claim 4 or 5 any one, which is characterized in that further include：
Storage unit, for storing the battery status information got, so that staff checks in the future.
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| CN106197854A (en) * | 2016-06-27 | 2016-12-07 | 宁德时代新能源科技股份有限公司 | Method and device for judging water inflow of battery pack |
| CN106324385A (en) * | 2016-08-08 | 2017-01-11 | 北京新能源汽车股份有限公司 | Testing system and method for battery management system |
| CN106711933B (en) * | 2016-12-20 | 2019-03-26 | 浙江大华技术股份有限公司 | A kind of equipment abnormal electrical power supply processing method, device and video camera |
| CN109375032B (en) * | 2018-09-15 | 2021-04-30 | 宁波高云电气有限公司 | Management system of high-power large-capacity capacitor |
| CN111381166A (en) * | 2018-12-29 | 2020-07-07 | 北京骑胜科技有限公司 | Method and system for monitoring battery state |
| CN112054477A (en) * | 2019-06-05 | 2020-12-08 | 凹凸电子（武汉）有限公司 | Threshold setting circuit, battery protection system and battery protection method |
| CN111932839B (en) * | 2020-07-17 | 2022-07-26 | 蓝谷智慧(北京)能源科技有限公司 | Emergency processing method and device for power change station |
| CN111751756B (en) * | 2020-07-31 | 2022-06-03 | 中国汽车工程研究院股份有限公司 | Method for identifying fault battery monomer by using accumulated power battery temperature curve |
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