CN109709485A - Fault detection method, device, medium and the electronic equipment of power battery - Google Patents
Fault detection method, device, medium and the electronic equipment of power battery Download PDFInfo
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- CN109709485A CN109709485A CN201910105248.7A CN201910105248A CN109709485A CN 109709485 A CN109709485 A CN 109709485A CN 201910105248 A CN201910105248 A CN 201910105248A CN 109709485 A CN109709485 A CN 109709485A
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- battery core
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Abstract
This disclosure relates to a kind of fault detection method of power battery, device, medium and electronic equipment.The described method includes: obtaining the voltage value of each single battery core in power battery when power battery operation, N group data are generated；Determine the smallest single battery core of voltage value in every group of data of the N group data；Determine that each single battery core is confirmed as the number Zhan of the smallest single battery core of voltage value and always organizes the first ratio of number N；Judge whether corresponding single battery core occurs short trouble according to first ratio.In this way, the comparison result of the voltage value of single battery core is added up on detection number, it is exaggerated the individual difference of single battery core, the problem of without the concern for voltage acquisition precision, improves the accuracy of power battery breakdown judge.
Description
Technical field
This disclosure relates to field of vehicle detection, and in particular, to a kind of fault detection method of power battery, device, Jie
Matter and electronic equipment.
Background technique
There may be the safety because of caused by some single battery core exception in use for the power battery of electric vehicle
Hidden danger.Security risk caused by this individual problem because of battery core, will lead to the deterioration of power battery performance, it is also possible to induce heat
Out of control, power battery can on fire, burning, explosion when serious.If electric vehicle event on fire frequently occurs, consumption can be hit
Person hinders the development of electric vehicle industry to the confidence of electric vehicle.Therefore, battery core individual difference how is held, by power electric
Pond safety accident was strangled in early stage, and then thermal runaway is avoided to become the emphasis studied.
The usual inducement of one of thermal runaway is internal short-circuit, and wherein single battery core micro-short circuit occurs to thermal runaway to send out from short circuit
It is raw, long time may be passed through, and monomer micro-short circuit can be with the use of power battery, to battery performance and safety
Influence degree gradually accumulate extension, it is final out of control.Battery core with micro-short circuit has voltage can be lower than just in use
The feature of normal battery core.
In the related art, the threshold value of vehicle pressure difference can be set as breakdown judge standard.However, being limited to electricity in group
Core inconsistency and data acquisition and the limitation of transmission precision, by voltage determine battery core failure exist it is certain uncertain and
Hysteresis quality, error are larger.
Summary of the invention
Purpose of this disclosure is to provide fault detection method, device, medium and the electricity of a kind of accurate, convenient and fast power battery
Sub- equipment.
To achieve the goals above, the disclosure provides a kind of fault detection method of power battery, which comprises obtains
The voltage value of the power battery each single battery core in power battery when running is taken, N group data are generated；Determine the N
The smallest single battery core of voltage value in every group of data of group data；Determine that each single battery core is confirmed as the smallest list of voltage value
The number Zhan of body battery core always organizes the first ratio of number N；It is short to judge whether corresponding single battery core occurs according to first ratio
Road failure.
In the embodiment, the smallest ratio of voltage value is confirmed as by single battery core, to determine corresponding single battery
Whether short trouble is occurred.In this way, the comparison result of the voltage value of single battery core is added up on detection number, it is exaggerated
The individual difference of single battery core the problem of without the concern for voltage acquisition precision, improves the accurate of power battery breakdown judge
Property.
Optionally, described to judge whether corresponding single battery core occurs short trouble according to first ratio, comprising: if
First ratio is greater than scheduled first threshold, then determines that short trouble occurs for corresponding single battery core；If first ratio
Rate is less than scheduled second threshold, then determines that short trouble does not occur for corresponding single battery core；If first ratio is greater than institute
It states second threshold and is less than the first threshold, then determine the corresponding doubtful short trouble of single battery core, wherein first threshold
Value is greater than the second threshold.
In the embodiment, by presetting two threshold values, the first ratio is divided into three sections: greater than scheduled first
Threshold value is less than scheduled second threshold, is greater than second threshold and is less than first threshold, corresponds respectively to short-circuit, not short-circuit and doubtful
Like the judging result of short circuit, simple, high reliablity is calculated.In addition, the setting of middle threshold value is independent of the battery core in power battery
System, therefore, this method have preferable versatility.
It is optionally, described to judge whether corresponding single battery core occurs short trouble according to first ratio, further includes:
If it is determined that a single battery core is the single battery core of doubtful short trouble, each single battery core when power battery operation is obtained
Voltage value generates M group data；Determine the smallest single battery core of voltage value in every group of data of the M group data；Determine each list
The number Zhan that body battery core is confirmed as the smallest single battery core of voltage value always organizes the second ratio of number M；According to second ratio
Judge whether the single battery core of the doubtful short trouble occurs short trouble.
In the embodiment, when being determined with the single battery core of doubtful short circuit, continue to sample using identical method to make
Further two-value judgement, calculates simple, high reliablity.
Optionally, described to judge whether the single battery core of the doubtful short trouble occurs short circuit according to second ratio
Failure, comprising: if being all larger than the second threshold in P second ratios that following continuous P time generates, determine described in
Short trouble occurs for the single battery core of doubtful short trouble.
In this way, when being determined with the single battery core of doubtful short circuit, from the confirmation of the angle further progress of statistical data.
Optionally, described to judge whether the single battery core of the doubtful short trouble occurs short circuit according to second ratio
Failure, comprising: if being all larger than scheduled third threshold value in P second ratios that following continuous P time generates, determine institute
Short trouble occurs for the single battery core for stating doubtful short trouble, wherein the third threshold value is greater than the second threshold, and is less than
The first threshold；Alternatively, if in P second ratios that following continuous P time generates at least one described second ratio
Rate is greater than the first threshold, then determines that short trouble occurs for the single battery core of the doubtful short trouble.
In this way, when being determined with the single battery core of doubtful short circuit, from the confirmation of the angle further progress of statistical data.
The disclosure also provides a kind of fault detection means of power battery.Described device includes: the first generation module, is used for
The voltage value for obtaining each single battery core in power battery when power battery operation, generates N group data；First determines
Module, the smallest single battery core of voltage value in every group of data for determining the N group data；Second determining module, for true
The number Zhan that fixed each single battery core is confirmed as the smallest single battery core of voltage value always organizes the first ratio of number N；Judgment module,
For judging whether corresponding single battery core occurs short trouble according to first ratio.
In the embodiment, the smallest ratio of voltage value is confirmed as by single battery core, to determine corresponding single battery
Whether short trouble is occurred.In this way, the comparison result of the voltage value of single battery core is added up on detection number, it is exaggerated
The individual difference of single battery core the problem of without the concern for voltage acquisition precision, improves the accurate of power battery breakdown judge
Property.
Optionally, the judgment module includes: the first judging submodule, if being greater than scheduled for first ratio
One threshold value then determines that short trouble occurs for corresponding single battery core；Second judgment submodule, if being less than for first ratio
Scheduled second threshold then determines that short trouble does not occur for corresponding single battery core；Third judging submodule, if for described the
One ratio is greater than the second threshold and is less than the first threshold, then determines the corresponding doubtful short trouble of single battery core,
In, the first threshold is greater than the second threshold.
In the embodiment, by presetting two threshold values, the first ratio is divided into three sections: greater than scheduled first
Threshold value is less than scheduled second threshold, is greater than second threshold and is less than first threshold, corresponds respectively to short-circuit, not short-circuit and doubtful
Like the judging result of short circuit, simple, high reliablity is calculated.In addition, the setting of middle threshold value is independent of the battery core in power battery
System, therefore, this method have preferable versatility.
Optionally, the judgment module further include: generate submodule, be used for if it is determined that a single battery core is doubtful short circuit event
The single battery core of barrier obtains the voltage value of each single battery core when power battery operation, generates M group data；First determines
Submodule, the smallest single battery core of voltage value in every group of data for determining the M group data；Second determines submodule, uses
In determining that each single battery core is confirmed as the number Zhan of the smallest single battery core of voltage value and always organizes the second ratio of number M；4th
Judging submodule, for judging whether the single battery core of the doubtful short trouble occurs short-circuit event according to second ratio
Barrier.
In the embodiment, when being determined with the single battery core of doubtful short circuit, continue to sample using identical method to make
Further two-value judgement, calculates simple, high reliablity.
The disclosure also provides a kind of computer readable storage medium, is stored thereon with computer program, and the program is processed
The step of fault detection method for the above-mentioned power battery that the disclosure provides is realized when device executes.
The disclosure also provides a kind of electronic equipment, comprising: memory is stored thereon with computer program；Processor is used for
The computer program in the memory is executed, to realize the fault detection method of the above-mentioned power battery of disclosure offer
The step of.
The voltage value that the disclosure passes through acquisition, monitors each single battery core in vehicle mounted dynamic battery, it is the smallest to voltage value
Single battery core carries out a certain number of statistics, using as the smallest frequency of voltage value as characteristic value, as in battery pack whether
There are the judgment basis of battery core individual failure, in this way, the frequency that the single battery core for only focusing on minimum voltage value occurs, is indifferent to tool
The voltage value of body, the problem of having bypassed voltage acquisition precision and battery core consistency, and then can capture in power battery early
Abnormal single battery core information, improve the accuracy and precision of judgement, can find the failure of single battery core as early as possible, avoid
Security risk.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is the flow chart of the fault detection method for the power battery that an exemplary embodiment provides；
Fig. 2 is the schematic diagram of the first ratio of the statistics that an exemplary embodiment provides；
Fig. 3-Fig. 5 is the schematic diagram for the second ratio continuously counted three times that an exemplary embodiment provides respectively；
Fig. 6 is the block diagram of the fault detection means for the power battery that an exemplary embodiment provides；
Fig. 7 is the block diagram for the electronic equipment that an exemplary embodiment provides.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
Fig. 1 is the flow chart of the fault detection method for the power battery that an exemplary embodiment provides.As shown in Figure 1, institute
The method of stating may comprise steps of.
In step s 11, the voltage value for obtaining each single battery core in power battery when power battery is run, generates N group
Data.
The voltage value of each single battery core can be periodically obtained, for example, obtaining every 10s primary.After vehicle stall,
The voltage value obtained can store, and next vehicle launch continues to obtain when running, until getting N group data.N can be with
It is a bigger integer, such as 20,000.N is bigger from the perspective of statistics, and conclusion is more accurate.For example, car owner
It goes to work 22 days within one month, commuting is used vehicle 3 hours daily, and the sampling period of voltage value is 10s, then a month available number arrived
According to being 23760 groups.
Wherein, one group of data includes a voltage value of each single battery core.For example, power battery includes 100 monomers
Battery core, then one group of data includes 100 voltage values corresponding to each single battery core.
In step s 12, the smallest single battery core of voltage value in every group of data of N group data is determined.
The smallest single battery core of voltage value can be set to only include a single battery core in every group of data, in this way, N group number
Just there is the smallest single battery core of N number of voltage value according to corresponding.For example, 100 single battery cores are numbered from 1 to 100,20,000
In group data, the number of the smallest single battery core of voltage value can be with are as follows: 40,50,55,50,50,3 ... (20,000).
The smallest single battery core of voltage value may be set to be including multiple single battery cores in every group of data.For example, determining
The smallest two single battery cores of voltage value in every group of data.
In step s 13, determine that each single battery core is confirmed as total group of number Zhan of the smallest single battery core of voltage value
The first ratio of number N.
For example, the single battery core that number is 50, in 18000 groups of data in 20,000 groups of data (N=20000) all
It is confirmed as the smallest single battery core of voltage value.First ratio of the single battery core that then number is 50 is 18000 ÷ 20000=
90%.
In step S14, judge whether corresponding single battery core occurs short trouble according to the first ratio.
If a single battery core is confirmed as the smallest single battery core of voltage value, it is likely to occur short trouble.One
A possibility that number that a single battery core is confirmed as the smallest single battery core of voltage value is more, then short trouble occurs in it get over
Greatly.A possibility that the first above-mentioned ratio is bigger, and whether corresponding single battery core occurs short trouble is bigger.Therefore, Ke Yigen
Judge whether corresponding single battery core occurs short trouble according to the first ratio.
Through the above technical solutions, being confirmed as the smallest ratio of voltage value by single battery core, to determine corresponding list
Whether body battery occurs short trouble.In this way, the comparison result of the voltage value of single battery core is added up on detection number,
It is exaggerated the individual difference of single battery core, the problem of without the concern for voltage acquisition precision, improves power battery breakdown judge
Accuracy.
In another embodiment, on the basis of Fig. 1, it is short to judge whether corresponding single battery core occurs according to the first ratio
The step of road failure (step S14), may comprise steps of:
If the first ratio is greater than scheduled first threshold, determine that short trouble occurs for corresponding single battery core；
If the first ratio is less than scheduled second threshold, determine that short trouble does not occur for corresponding single battery core；
If the first ratio is greater than second threshold and is less than first threshold, the corresponding doubtful short circuit event of single battery core is determined
Barrier, wherein first threshold is greater than second threshold.
As described above, a possibility that the first ratio is bigger, and whether corresponding single battery core occurs short trouble is bigger.The reality
It applies in example, by presetting two threshold values, the first ratio is divided into three sections: greater than scheduled first threshold, is less than in advance
Fixed second threshold is greater than second threshold and is less than first threshold, corresponds respectively to short-circuit, not short circuit and doubtful short circuit judgement
As a result, calculating simple, high reliablity.In addition, the setting of threshold value is independent of the electric core architecture in power battery in the disclosure
Specific framework, therefore, this method have preferable versatility.
Wherein, first threshold and second threshold can be obtained according to test or experience.For example, first threshold can be
90%, second threshold can be 50%, however, it is determined that the first ratio of the single battery core that number is 50 is 60%, then the single battery core
Doubtful short circuit.
In another embodiment, further short-circuit or not short-circuit two-value can be carried out to the single battery core of doubtful short circuit to sentence
It is disconnected.In this embodiment, on the basis of a upper embodiment, it is short to judge whether corresponding single battery core occurs according to the first ratio
The step of road failure (step S14), can be further comprising the steps of:
If it is determined that a single battery core is the single battery core of doubtful short trouble, each monomer electricity when power battery operation is obtained
The voltage value of core generates M group data；
Determine the smallest single battery core of voltage value in every group of data of M group data；
Determine each single battery core be confirmed as the smallest single battery core of voltage value number Zhan always organize number M second ratio
Rate；
Judge whether the single battery core of doubtful short trouble occurs short trouble according to the second ratio.
It is, can further be judged when there is single battery core doubtful short-circuit, reacquire each monomer
The M group data of the voltage value of battery core.Total group of number Zhan of the smallest single battery core of voltage value is redefined using identical method
Several ratios, in order to be distinguished, radix is that the ratio that M group data obtain is the second ratio, and radix is the ratio that N group data obtain
Rate is the first ratio.
Both M and N there is no direct relationship, M can greater than, equal to or be less than N.Similarly, M is bigger, judging result
It is more accurate.
In the embodiment, when being determined with the single battery core of doubtful short circuit, continue to sample using identical method to make
Further two-value judgement, calculates simple, high reliablity.
In another embodiment, it is above-mentioned according to the second ratio judge doubtful short trouble single battery core whether occur it is short
The step of road failure may include:
If being all larger than second threshold in P the second ratios that following continuous P time generates, doubtful short trouble is determined
Short trouble occurs for single battery core.
It is, opening continuous abnormal judgment model when there is single battery core doubtful short-circuit, continuous P time sampling M group is needed
Data.When the P being calculated second ratios are all larger than second threshold, it is possible to determine that the single battery core of doubtful short trouble is
Short circuit occurs.In this way, from the confirmation of the angle further progress of statistical data.
In another embodiment, it is above-mentioned according to the second ratio judge doubtful short trouble single battery core whether occur it is short
The step of road failure may include:
If being all larger than scheduled third threshold value in P the second ratios that following continuous P time generates, doubtful short circuit is determined
Short trouble occurs for the single battery core of failure, wherein third threshold value is greater than second threshold, and is less than first threshold.
That is, opening continuous abnormal judgment model when there is single battery core doubtful short-circuit, continuous P time sampling M group number is needed
According to.When the P being calculated second ratios are all larger than third threshold value, it is possible to determine that the single battery core of doubtful short trouble has been sent out
Raw short circuit.In the embodiment, it will confirm that the threshold condition of short circuit is reduced to third threshold value and (is less than first threshold and is greater than the second threshold
Value), but the frequency requirement of continuous P time is increased simultaneously, in this way, from the confirmation of the angle further progress of statistical data.
In another embodiment, it is above-mentioned according to the second ratio judge doubtful short trouble single battery core whether occur it is short
The step of road failure may include:
If at least one second ratio is greater than first threshold in P the second ratios that following continuous P time generates, sentence
Short trouble occurs for the single battery core of fixed doubtful short trouble.
That is, opening continuous abnormal judgment model when there is single battery core doubtful short-circuit, continuous P time sampling M group number is needed
According to.But during subsequent P acquisition, as long as once the second ratio is greater than first threshold, doubtful short circuit can be determined that
Short circuit has occurred for the single battery core of failure, can not have to continue the residue degree in P times.
For example, power battery includes 100 single battery cores, and corresponding number is 1-100.Fig. 2 is an exemplary reality
The schematic diagram of first ratio of the statistics of example offer is provided.In Fig. 2, abscissa indicates the number of single battery core, and ordinate indicates
First ratio.First ratio of the single battery core that number is 50 is 55%.Less than first threshold 90%, it is greater than second threshold
50%.It can be determined that single battery core that number is 50 is the single battery core of doubtful short circuit.
Fig. 3-Fig. 5 is the schematic diagram for the second ratio continuously counted three times that an exemplary embodiment provides respectively.Scheming
In 3- Fig. 5, the second ratio of the single battery core that number is 50 has respectively reached 95%, 99% and 94%, has been more than the second threshold
Value 50% (N=3), hence, it can be determined that short trouble has occurred for the single battery core that number is 50.
The disclosure also provides a kind of fault detection means of power battery.Fig. 6 is the power that an exemplary embodiment provides
The block diagram of the fault detection means of battery.As shown in fig. 6, the fault detection means 10 of the power battery may include first raw
At module 11, the first determining module 12, the second determining module 13 and judgment module 14.
First generation module 11 is used to obtain the voltage value of each single battery core in power battery when power battery is run, raw
At N group data.
First determining module 12 is used to determine the smallest single battery core of voltage value in every group of data of N group data.
Second determining module 13 is for determining that each single battery core is confirmed as the number of the smallest single battery core of voltage value
Zhan always organizes the first ratio of number N.
Judgment module 14 is used to judge whether corresponding single battery core occurs short trouble according to the first ratio.
Wherein, the first generation module 11 can periodically obtain the voltage value of each single battery core, for example, every 10s
It obtains primary.After vehicle stall, the voltage value obtained be can store, and next vehicle launch continues to obtain when running, directly
To getting N group data.N can be a bigger integer, such as 20,000.N is bigger from the perspective of statistics, and conclusion is more
It is accurate to add.
The smallest single battery core of identified voltage value is sent to the second determining module 13 by the first determining module 12.Second
The number Zhan that determining module 13 calculates the smallest single battery core of voltage value always organizes the first ratio of number N.
Wherein, one group of data includes a voltage value of each single battery core.For example, power battery includes 100 monomers
Battery core, then one group of data includes 100 voltage values corresponding to each single battery core.
The smallest single battery core of voltage value can be set to only include a single battery core in every group of data, in this way, N group number
Just there is the smallest single battery core of N number of voltage value according to corresponding.
The smallest single battery core of voltage value may be set to be including multiple single battery cores in every group of data.For example, determining
The smallest two single battery cores of voltage value in every group of data.
In judgment module 14, for example, the single battery core that number is 50, in 20,000 groups of data (N=20000)
All it is confirmed as the smallest single battery core of voltage value in 18000 groups of data.First ratio of the single battery core that then number is 50
For 18000 ÷ 20000=90%.
Wherein, if a single battery core is confirmed as the smallest single battery core of voltage value, it is likely to occur short-circuit event
Barrier.The number that one single battery core is confirmed as the smallest single battery core of voltage value is more, then its possibility that short trouble occurs
Property is bigger.A possibility that the first above-mentioned ratio is bigger, and whether corresponding single battery core occurs short trouble is bigger.Therefore, sentence
Disconnected module 14 can judge whether corresponding single battery core occurs short trouble according to the first ratio.
Through the above technical solutions, being confirmed as the smallest ratio of voltage value by single battery core, to determine corresponding list
Whether body battery occurs short trouble.In this way, the comparison result of the voltage value of single battery core is added up on detection number,
It is exaggerated the individual difference of single battery core, the problem of without the concern for voltage acquisition precision, improves power battery breakdown judge
Accuracy.
Optionally, judgment module 14 may include that the first judging submodule, second judgment submodule and third judge submodule
Block.
If the first judging submodule is greater than scheduled first threshold for the first ratio, corresponding single battery core hair is determined
Raw short trouble.
If second judgment submodule is less than scheduled second threshold for the first ratio, corresponding single battery core is determined not
Short trouble occurs.
If third judging submodule is greater than second threshold for the first ratio and is less than first threshold, corresponding list is determined
The doubtful short trouble of body battery core, wherein first threshold is greater than second threshold.
In the embodiment, by presetting two threshold values, the first ratio is divided into three sections: greater than scheduled first
Threshold value is less than scheduled second threshold, is greater than second threshold and is less than first threshold, corresponds respectively to short-circuit, not short-circuit and doubtful
Like the judging result of short circuit, simple, high reliablity is calculated.First judging submodule, second judgment submodule and third judgement
Module corresponds respectively to the judgement that the first ratio is divided into three sections.In addition, the setting of middle threshold value is independent of in power battery
Electric core architecture, therefore, this method have preferable versatility.
Wherein, first threshold and second threshold can be obtained according to test or experience.For example, first threshold can be
90%, second threshold can be 50%, however, it is determined that the first ratio of the single battery core that number is 50 is 60%, then the single battery core
Doubtful short circuit.
Optionally, judgment module 14 can also include generate submodule, first determine submodule, second determine submodule and
4th judging submodule.
Submodule is generated to be used for if it is determined that a single battery core is the single battery core of doubtful short trouble, acquisition power battery fortune
The voltage value of each single battery core when row generates M group data.
First determines that submodule is used to determine the smallest single battery core of voltage value in every group of data of M group data.
Second determines submodule for determining that each single battery core is confirmed as the number of the smallest single battery core of voltage value
Zhan always organizes the second ratio of number M.
4th judging submodule is used to judge whether the single battery core of doubtful short trouble occurs short circuit according to the second ratio
Failure.
When there is single battery core doubtful short-circuit, can further it be judged, generating submodule can reacquire
The M group data of the voltage value of each single battery core.First determines that submodule is redefined using method same as mentioned above
The number Zhan of the smallest single battery core of voltage value always organizes the ratio of number, and in order to be distinguished, second determines that submodule utilizes radix
The ratio obtained for M group data is the second ratio, and above-mentioned radix is that the ratio that N group data obtain is the first ratio.
Both M and N there is no direct relationship, M can greater than, equal to or be less than N.Similarly, M is bigger, judging result
It is more accurate.
In the embodiment, when being determined with the single battery core of doubtful short circuit, continue to sample using identical method to make
Further two-value judgement, calculates simple, high reliablity.
Optionally, the 4th judging submodule may include the 5th judging submodule.
If P the second ratios that the 5th judging submodule is used to generate in following continuous P time are all larger than second threshold,
Determine that short trouble occurs for the single battery core of doubtful short trouble.
When there is single battery core doubtful short-circuit, continuous abnormal judgment model is opened, needs continuous P time sampling M group data.?
When P the second ratios being calculated are all larger than second threshold, the 5th judging submodule can be determined that the list of doubtful short trouble
Short circuit has occurred for body battery core.In this way, when being determined with the single battery core of doubtful short circuit, from the angle further progress of statistical data
Confirmation.
Optionally, the 4th judging submodule may include the 6th judging submodule or the 7th judging submodule.
If P the second ratios that the 6th judging submodule is used to generate in following continuous P time are all larger than scheduled third
Threshold value then determines that short trouble occurs for the single battery core of doubtful short trouble.Wherein, third threshold value is greater than second threshold, and small
In first threshold.
If the 7th judging submodule is used at least one second ratio in P the second ratios that following continuous P time generates
Rate is greater than first threshold, then determines that short trouble occurs for the single battery core of doubtful short trouble.
When there is single battery core doubtful short-circuit, continuous abnormal judgment model is opened, needs continuous P time sampling M group data.?
When P the second ratios being calculated are all larger than third threshold value, the 6th judging submodule can be determined that the list of doubtful short trouble
Short circuit has occurred for body battery core.In the embodiment, will confirm that short circuit threshold condition be reduced to third threshold value (be less than first threshold and
Greater than second threshold), but the frequency requirement of continuous P time is increased simultaneously.
Alternatively, during subsequent P acquisition, as long as once the second ratio is greater than first threshold, the 7th judgement
Submodule can be determined that short circuit has occurred for the single battery core of doubtful short trouble, can not have to continue the residue degree in P times.
In this way, when being determined with the single battery core of doubtful short circuit, from the confirmation of the angle further progress of statistical data.
About the device in above-described embodiment, wherein modules execute the concrete mode of operation in related this method
Embodiment in be described in detail, no detailed explanation will be given here.
Fig. 7 is the block diagram of a kind of electronic equipment 700 shown according to an exemplary embodiment.As shown in fig. 7, the electronics is set
Standby 700 may include: processor 701, memory 702.The electronic equipment 700 can also include multimedia component 703, input/
Export one or more of (I/O) interface 704 and communication component 705.
Wherein, processor 701 is used to control the integrated operation of the electronic equipment 700, to complete above-mentioned fault detection side
All or part of the steps in method.Memory 702 is for storing various types of data to support the behaviour in the electronic equipment 700
To make, these data for example may include the instruction of any application or method for operating on the electronic equipment 700, with
And the relevant data of application program, such as contact data, the message of transmitting-receiving, picture, audio, video etc..The memory 702
It can be realized by any kind of volatibility or non-volatile memory device or their combination, such as static random-access is deposited
Reservoir (Static Random Access Memory, abbreviation SRAM), electrically erasable programmable read-only memory
(Electrically Erasable Programmable Read-Only Memory, abbreviation EEPROM), erasable programmable
Read-only memory (Erasable Programmable Read-Only Memory, abbreviation EPROM), programmable read only memory
(Programmable Read-Only Memory, abbreviation PROM), and read-only memory (Read-Only Memory, referred to as
ROM), magnetic memory, flash memory, disk or CD.Multimedia component 703 may include screen and audio component.Wherein
Screen for example can be touch screen, and audio component is used for output and/or input audio signal.For example, audio component may include
One microphone, microphone is for receiving external audio signal.The received audio signal can be further stored in storage
Device 702 is sent by communication component 705.Audio component further includes at least one loudspeaker, is used for output audio signal.I/O
Interface 704 provides interface between processor 701 and other interface modules, other above-mentioned interface modules can be keyboard, mouse,
Button etc..These buttons can be virtual push button or entity button.Communication component 705 is for the electronic equipment 700 and other
Wired or wireless communication is carried out between equipment.Wireless communication, such as Wi-Fi, bluetooth, near-field communication (Near Field
Communication, abbreviation NFC), 2G, 3G, 4G, NB-IOT, eMTC or other 5G etc. or they one or more of
Combination, it is not limited here.Therefore the corresponding communication component 707 may include: Wi-Fi module, bluetooth module, NFC mould
Block etc..
In one exemplary embodiment, electronic equipment 700 can be by one or more application specific integrated circuit
(Application Specific Integrated Circuit, abbreviation ASIC), digital signal processor (Digital
Signal Processor, abbreviation DSP), digital signal processing appts (Digital Signal Processing Device,
Abbreviation DSPD), programmable logic device (Programmable Logic Device, abbreviation PLD), field programmable gate array
(Field Programmable Gate Array, abbreviation FPGA), controller, microcontroller, microprocessor or other electronics member
Part is realized, for executing above-mentioned fault detection method.
In a further exemplary embodiment, a kind of computer readable storage medium including program instruction is additionally provided, it should
The step of above-mentioned fault detection method is realized when program instruction is executed by processor.For example, the computer readable storage medium
It can be the above-mentioned memory 702 including program instruction, above procedure instruction can be executed by the processor 701 of electronic equipment 700
To complete above-mentioned fault detection method.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (10)
1. a kind of fault detection method of power battery, which is characterized in that the described method includes:
The voltage value for obtaining each single battery core in power battery when power battery operation, generates N group data；
Determine the smallest single battery core of voltage value in every group of data of the N group data；
Determine that each single battery core is confirmed as the number Zhan of the smallest single battery core of voltage value and always organizes the first ratio of number N；
Judge whether corresponding single battery core occurs short trouble according to first ratio.
2. the method according to claim 1, wherein described judge corresponding monomer electricity according to first ratio
Whether core occurs short trouble, comprising:
If first ratio is greater than scheduled first threshold, determine that short trouble occurs for corresponding single battery core；
If first ratio is less than scheduled second threshold, determine that short trouble does not occur for corresponding single battery core；
If first ratio is greater than the second threshold and is less than the first threshold, determine that corresponding single battery core is doubtful
Short trouble, wherein the first threshold is greater than the second threshold.
3. according to the method described in claim 2, it is characterized in that, described judge corresponding monomer electricity according to first ratio
Whether core occurs short trouble, further includes:
If it is determined that a single battery core is the single battery core of doubtful short trouble, each monomer electricity when power battery operation is obtained
The voltage value of core generates M group data；
Determine the smallest single battery core of voltage value in every group of data of the M group data；
Determine that each single battery core is confirmed as the number Zhan of the smallest single battery core of voltage value and always organizes the second ratio of number M；
Judge whether the single battery core of the doubtful short trouble occurs short trouble according to second ratio.
4. according to the method described in claim 3, it is characterized in that, described judge the doubtful short circuit according to second ratio
Whether the single battery core of failure occurs short trouble, comprising:
If being all larger than the second threshold in P second ratios that following continuous P time generates, determine described doubtful short
Short trouble occurs for the single battery core of road failure.
5. according to the method described in claim 3, it is characterized in that, described judge the doubtful short circuit according to second ratio
Whether the single battery core of failure occurs short trouble, comprising:
If being all larger than scheduled third threshold value in P second ratios that following continuous P time generates, determine described doubtful
Short trouble occurs for the single battery core of short trouble, wherein the third threshold value is greater than the second threshold, and is less than described the
One threshold value；
Alternatively,
If at least one described second ratio is greater than described first in P second ratios that following continuous P time generates
Threshold value then determines that short trouble occurs for the single battery core of the doubtful short trouble.
6. a kind of fault detection means of power battery, which is characterized in that described device includes:
First generation module, for obtaining the voltage of each single battery core in the power battery when power battery is run
Value generates N group data；
First determining module, the smallest single battery core of voltage value in every group of data for determining the N group data；
Second determining module, for determining that each single battery core is confirmed as total group of number Zhan of the smallest single battery core of voltage value
The first ratio of number N；
Judgment module, for judging whether corresponding single battery core occurs short trouble according to first ratio.
7. device according to claim 6, which is characterized in that the judgment module includes:
First judging submodule determines corresponding single battery core if being greater than scheduled first threshold for first ratio
Short trouble occurs；
Second judgment submodule determines corresponding single battery core if being less than scheduled second threshold for first ratio
Short trouble does not occur；
Third judging submodule is sentenced if being greater than the second threshold for first ratio and being less than the first threshold
The fixed corresponding doubtful short trouble of single battery core, wherein the first threshold is greater than the second threshold.
8. device according to claim 7, which is characterized in that the judgment module further include:
Generate submodule, for if it is determined that a single battery core be doubtful short trouble single battery core, obtain the power battery
The voltage value of each single battery core when operation generates M group data；
First determines submodule, the smallest single battery core of voltage value in every group of data for determining the M group data；
Second determine submodule, for determine each single battery core be confirmed as the smallest single battery core of voltage value number Zhan it is total
The second ratio of group number M；
4th judging submodule, for judging whether the single battery core of the doubtful short trouble occurs according to second ratio
Short trouble.
9. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is held by processor
The step of any one of claim 1-5 the method is realized when row.
10. a kind of electronic equipment characterized by comprising
Memory is stored thereon with computer program；
Processor, for executing the computer program in the memory, to realize described in any one of claim 1-5
The step of method.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110852422A (en) * | 2019-11-12 | 2020-02-28 | 吉林大学 | Convolutional neural network optimization method and device based on pulse array |
| CN111157911A (en) * | 2019-12-30 | 2020-05-15 | 北京四维智联科技有限公司 | Method, device and equipment for predicting excessive voltage difference of battery pack |
| CN112561094A (en) * | 2020-12-21 | 2021-03-26 | 交控科技股份有限公司 | Train stop fault analysis method and device and electronic equipment |
| WO2022001197A1 (en) * | 2020-06-30 | 2022-01-06 | 宁德时代新能源科技股份有限公司 | Method and apparatus for detecting short circuit fault in battery cell, and device and medium |
| WO2024045502A1 (en) * | 2022-08-31 | 2024-03-07 | 岚图汽车科技有限公司 | Battery voltage acquisition fault early warning method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565611A (en) * | 2011-12-27 | 2012-07-11 | 惠州市亿能电子有限公司 | Internal short-circuit detection method of power battery |
| US20160047853A1 (en) * | 2014-08-18 | 2016-02-18 | Samsung Electronics Co., Ltd. | Test system that performs simultaneous tests of multiple test units |
| CN106556802A (en) * | 2016-11-01 | 2017-04-05 | 东软集团股份有限公司 | A kind of accumulator battery exception cell recognition methodss and device |
| CN107843802A (en) * | 2017-10-23 | 2018-03-27 | 北京小米移动软件有限公司 | Internal short-circuit detection method and device |
| CN108241102A (en) * | 2016-12-23 | 2018-07-03 | 华为技术有限公司 | A kind of detection method and device of battery micro-short circuit |
-
2019
- 2019-02-01 CN CN201910105248.7A patent/CN109709485A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565611A (en) * | 2011-12-27 | 2012-07-11 | 惠州市亿能电子有限公司 | Internal short-circuit detection method of power battery |
| US20160047853A1 (en) * | 2014-08-18 | 2016-02-18 | Samsung Electronics Co., Ltd. | Test system that performs simultaneous tests of multiple test units |
| CN106556802A (en) * | 2016-11-01 | 2017-04-05 | 东软集团股份有限公司 | A kind of accumulator battery exception cell recognition methodss and device |
| CN108241102A (en) * | 2016-12-23 | 2018-07-03 | 华为技术有限公司 | A kind of detection method and device of battery micro-short circuit |
| CN107843802A (en) * | 2017-10-23 | 2018-03-27 | 北京小米移动软件有限公司 | Internal short-circuit detection method and device |
Non-Patent Citations (1)
| Title |
|---|
| 李国欣: "《新型化学电源技术概论》", 31 May 2007, 上海科学技术出版社 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110852422A (en) * | 2019-11-12 | 2020-02-28 | 吉林大学 | Convolutional neural network optimization method and device based on pulse array |
| CN110852422B (en) * | 2019-11-12 | 2022-08-16 | 吉林大学 | Convolutional neural network optimization method and device based on pulse array |
| CN111157911A (en) * | 2019-12-30 | 2020-05-15 | 北京四维智联科技有限公司 | Method, device and equipment for predicting excessive voltage difference of battery pack |
| CN111157911B (en) * | 2019-12-30 | 2022-03-18 | 北京四维智联科技有限公司 | Method, device and equipment for predicting excessive voltage difference of battery pack |
| WO2022001197A1 (en) * | 2020-06-30 | 2022-01-06 | 宁德时代新能源科技股份有限公司 | Method and apparatus for detecting short circuit fault in battery cell, and device and medium |
| US11614494B2 (en) | 2020-06-30 | 2023-03-28 | Contemporary Amperex Technology Co., Limited | Method, apparatus, device and medium for detecting internal short-circuit fault of battery cell |
| CN112561094A (en) * | 2020-12-21 | 2021-03-26 | 交控科技股份有限公司 | Train stop fault analysis method and device and electronic equipment |
| WO2024045502A1 (en) * | 2022-08-31 | 2024-03-07 | 岚图汽车科技有限公司 | Battery voltage acquisition fault early warning method and system |
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