CN110276925A - A kind of lithium battery short circuit thermal runaway fire detection method for early warning - Google Patents
A kind of lithium battery short circuit thermal runaway fire detection method for early warning Download PDFInfo
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- CN110276925A CN110276925A CN201910577074.4A CN201910577074A CN110276925A CN 110276925 A CN110276925 A CN 110276925A CN 201910577074 A CN201910577074 A CN 201910577074A CN 110276925 A CN110276925 A CN 110276925A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The present invention relates to a kind of lithium battery short circuit thermal runaway fire detection method for early warning, it include: to judge voltage, operating current and the battery surface temperature of the lithium battery of same time acquisition whether not in security interval, if level-one time of fire alarming increases by 1 not in security interval；Judge whether level-one time of fire alarming is more than preset time, if it does, issuing level-one alarm；Secondary alarm judgment step obtains voltage change ratio, current changing rate and rate of temperature change according to the voltage of the lithium battery acquired in preset period of time, operating current and battery surface temperature；Voltage change ratio, current changing rate and rate of temperature change in preset period of time are judged whether not in reasonable interval, if issuing secondary alarm not in reasonable interval.A kind of lithium battery short circuit thermal runaway fire detection method for early warning of the present invention, short-circuit safe condition that can be current to lithium battery carries out real-time monitoring, and generates early warning, ensure that lithium battery using safe.
Description
Technical field
The invention belongs to technical field of lithium batteries, the in particular to a kind of pre- police of lithium battery short circuit thermal runaway fire detection
Method.
Background technique
Since the 1970s, nowadays lithium battery has evolved to has had clearly first lithium ion battery in the world
Clean pollution-free, high-energy density ratio, the advantages that service life cycle is long, have been widely used for new-energy automobile, solar energy
Storage, mobile communication equipment.But to the unreasonable use of lithium battery either destructive procedure, it will cause certain harm very
It explodes to thermal runaway.
In the numerous reasons for causing lithium battery thermal runaway, the harm of the lithium battery thermal runaway as caused by short circuit is especially serious.
Collision, battery case immersion, fall extruding, processing of old and useless battery etc. of lithium battery communication apparatus of new-energy automobile are likely to
Cause lithium battery that short circuit harm occurs, the short circuit of lithium battery refers to by the lesser conductor of resistance value, is connected directly between the positive and negative of battery
It discharges strongly caused by the both ends of pole behavior.
When lithium battery reasonable employment, battery itself heat production and external heat dissipation reach dynamic equilibrium, once lithium battery is sent out
Raw short circuit, voltage decline rapidly, and lithium battery will generate over-discharge damage when being reduced to discharge cut-off voltage, while short circuit will
Lithium battery can be made to generate larger short circuit current rapidly, then generate a large amount of Joule heats, lithium battery is brought rapidly up, when temperature exceeds lithium
After battery reasonable employment temperature, lithium battery damage and generation thermal runaway.Lithium battery short circuit thermal runaway seriously threatens people's
The security of the lives and property, national standard body has also promulgated corresponding lithium battery short circuit safety test standard, and " GB 31241-2014 is just
Take formula use for electronic products lithium ion battery and battery pack safety requirements " and " GB/T 31485-2015 power electric power storage for electric vehicle
Pond safety requirements and test method ", so the detection and early warning to lithium battery short circuit are particularly necessary.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of lithium battery short circuit thermal runaway fire detection is pre-
Alarm method, short-circuit safe condition that can be current to lithium battery carries out real-time monitoring, and generates early warning, ensure that making for lithium battery
With safety.
To achieve the goals above, the technical scheme is that
A kind of lithium battery short circuit thermal runaway fire detection method for early warning, comprising:
Level-one alarm decision step judges voltage, operating current and the battery surface temperature of the lithium battery of same time acquisition
Whether degree is in security interval, if level-one time of fire alarming increases by 1 not in security interval；When judging level-one alarm
Between whether be more than preset time, if it does, issue level-one alarm；
Secondary alarm judgment step, according to the voltage, operating current and battery surface of the lithium battery acquired in preset period of time
Temperature obtains voltage change ratio, current changing rate and rate of temperature change；Judge voltage change ratio, the curent change in preset period of time
Whether rate and rate of temperature change are in reasonable interval, if issuing secondary alarm not in reasonable interval.
Preferably, the level-one alarm decision step, specifically includes:
Voltage security parameter SU, electric current security parameter SI and temperature safety parameter ST are disposed as 1, acquisition n-th second
Characteristic parameter value；The characteristic parameter value includes voltage, operating current and battery surface temperature；
Judge voltage whether in voltage security upper and lower limits, if, be determined as normal, set 1 for SU, it is no
Then, it is determined as abnormal, sets 0 for SU；Operating current is judged whether in the safe upper and lower limits of electric current, if sentencing
Be set to normal, set 1 for SI, otherwise, it is determined that be it is abnormal, set 0 for SI；Judge battery surface temperature whether in temperature
In safe upper and lower limits, if, be determined as normal, set 1 for ST, otherwise, it is determined that be it is abnormal, set 0 for ST；
Judge whether voltage security parameter SU, electric current security parameter SI and temperature safety parameter ST are 0, if so, by one
Grade alarm cumulative time SUM adds 1；
Judge whether level-one alarm cumulative time SUM is more than or equal to preset value, if so, generating level-one alarm, otherwise not
Generate level-one alarm.
Preferably, the secondary alarm judgment step, specifically includes:
Secondary alarm voltage security parameter SKU, electric current security parameter SKI and temperature safety parameter SKT are disposed as 1,
Acquire the characteristic parameter value per second in preset time；The characteristic parameter value includes voltage, operating current and battery surface temperature
Degree；
Linear fit is carried out to the characteristic parameter in preset time, i.e., to n-th second, (n+1) second, (n+2) second, (n+3) second
The characteristic parameter of (n+4) second carries out linear fit and obtains voltage change ratio KU, current changing rate KI and rate of temperature change KT；
Voltage change ratio KU is judged whether in voltage change ratio voltage security upper and lower limits, if judgement is positive
Often, 1 is set by SKU, otherwise, it is determined that setting 0 for SKU to be abnormal；Judge whether current changing rate KI becomes in electric current
In the safe upper and lower limits of rate, if, be determined as normal, set 1 for SKI, otherwise, it is determined that be it is abnormal, SKI is set
It is set to 0；Rate of temperature change is judged whether in the safe upper and lower limits of rate of temperature change, if being determined as normally, by SKT
It is set as 1, otherwise, it is determined that setting 0 for SKT to be abnormal；
Judge whether voltage security parameter SKU, electric current security parameter SKI and temperature safety parameter SKT are 0, if so, producing
Raw secondary alarm, does not otherwise generate secondary alarm.
After adopting the above scheme, the beneficial effects of the present invention are:
A kind of lithium battery short circuit thermal runaway fire detection method for early warning of the present invention, short circuit that can be current to lithium battery are safe
State carries out real-time monitoring, carries out level-one early warning judgement according to the characteristic parameter amount currently acquired, while according in preset period of time
The change rate of characteristic parameter amount carries out second level early warning judgement, the judgement of two-stage early warning ensure that lithium battery using safe.
Invention is further described in detail with reference to the accompanying drawings and embodiments, but a kind of lithium battery short circuit of the invention
Thermal runaway fire detection method for early warning is not limited to the embodiment.
Detailed description of the invention
Fig. 1 is level-one alarm flow figure of the invention；
Fig. 2 is secondary alarm flow chart of the invention.
Specific embodiment
Below with reference to attached drawing of the present invention, technical solution in the embodiment of the present invention is described in detail and discusses.It answers
Work as understanding, described herein specific examples are only used to explain the present invention, is not intended to limit the present invention.
A kind of lithium battery short circuit thermal runaway fire detection method for early warning of the present invention, comprising:
Level-one alarm decision step judges voltage, operating current and the battery surface temperature of the lithium battery of same time acquisition
Whether degree is in security interval, if level-one time of fire alarming increases by 1 not in security interval；When judging level-one alarm
Between whether be more than preset time, if it does, issue level-one alarm；
Secondary alarm judgment step, according to the voltage, operating current and battery surface of the lithium battery acquired in preset period of time
Temperature obtains voltage change ratio, current changing rate and rate of temperature change；Judge voltage change ratio, the curent change in preset period of time
Whether rate and rate of temperature change are in reasonable interval, if issuing secondary alarm not in reasonable interval.
It should be noted that level-one alarm decision and secondary alarm judgement carry out simultaneously.
Specifically, shown in Figure 1, the level-one alarm decision step is implemented as follows.
In level-one alarm decision step, enabling SUM is that level-one is alarmed the cumulative time, unit s；Level-one alarm security parameter
Value including voltage security parameter SU, electric current security parameter SI and temperature safety parameter ST, SU, SI and ST is 1 or 0, and (1 is peace
Entirely, 0 is dangerous)；UHAnd ULRespectively voltage security upper and lower bound, IHAnd ILRespectively electric current upper safety limit and lower limit, TH
And TLRespectively temperature safety upper and lower bound, wherein UH、UL、IH、IL、THAnd TLAccording to specific lithium battery type or ring can be used
Upper lower limit value is changed in border.
When judging that process starts, SUM is assigned a value of 0 first, SU, SI and ST are assigned a value of 1, the feature ginseng of the n-th s of acquisition
Magnitude judges voltage whether in reasonable employment upper and lower limits, if being determined as normal, SU in bound use scope
It is assigned a value of 1, if being determined as abnormal not in reasonable employment upper and lower limits, SU is assigned a value of 0.
Electric current is with the judgement of temperature as voltage.SU and SI and ST are carried out later and operation, if SU&SI&ST if
0, then SUM+1, if 1, then SUM is 0.
If accumulative 3s, characteristic parameter is abnormal, then SUM >=3, then issues level-one alarm, otherwise do not alarm.By SU, SI,
ST sets 1 again, starts the characteristic parameter acquisition of carry out (n+1) s.
Specifically, shown in Figure 2, the secondary alarm judgment step is implemented as follows.
In secondary alarm judgment step, secondary alarm security parameter includes voltage security parameter SKU, electric current security parameter
The value of SKI and temperature safety parameter SKT, SKU, SKI and SKT are 1 or 0 (1 is safety, and 0 is dangerous)；KU、KIAnd KTRespectively
For the change rate of voltage, electric current and temperature in certain time, KUHAnd KULRespectively voltage change ratio upper safety limit and lower limit,
KIHAnd KILRespectively current changing rate upper safety limit and lower limit, KTHAnd KTLRespectively rate of temperature change upper safety limit and lower limit,
Middle KUH、KUL、KIH、KIL、KTHAnd KTLUpper lower limit value can be changed according to specific lithium battery type or use environment.
When judging that process starts, secondary alarm security parameter SKU, SKI, SKT are set 1, acquire the characteristic parameter value of every 1s,
Linear fit, i.e., the are carried out to the characteristic parameter of (can be according to the difference of lithium battery and specifically used change in environment time) in 5s
Ns, (n+1) s, (n+2) s, (n+3) s and (n+4) s characteristic parameter carry out linear fit and obtain change rate KU、KIAnd KT, judgement
Whether voltage change ratio is in reasonable upper and lower limits, if being determined as that normally SKU is assigned a value of in bound use scope
1, if being determined as abnormal not in reasonable employment upper and lower limits, SKU is assigned a value of 0.
Current changing rate is with the judgement of rate of temperature change as the judgement of voltage change ratio.Later to SKU, SKI and SKT
It carries out and operation if SKU&SKI&SKT issues secondary alarm if 0 if 1, does not then issue alarm.
1 is set to SKU, SKI and SKT later, starts the spy of (n+1) s, (n+2) s, (n+3) s, (n+4) s and (n+5) s
Levy the analytical judgment of parameter change rate.
The above is only a preferable embodiments in present example.But the present invention is not limited to above-mentioned embodiment party
Case, it is all by the present invention any equivalent change and modification done, generated function without departing from this programme range when,
It belongs to the scope of protection of the present invention.
Claims (3)
1. a kind of lithium battery short circuit thermal runaway fire detection method for early warning characterized by comprising
Level-one alarm decision step judges that voltage, operating current and the battery surface temperature of the lithium battery of same time acquisition are
It is no not in security interval, if level-one time of fire alarming increases by 1 not in security interval；Judging level-one time of fire alarming is
No is more than preset time, if it does, issuing level-one alarm；
Secondary alarm judgment step, according to the voltage of the lithium battery acquired in preset period of time, operating current and battery surface temperature
Obtain voltage change ratio, current changing rate and rate of temperature change；Judge voltage change ratio in preset period of time, current changing rate and
Whether rate of temperature change is in reasonable interval, if issuing secondary alarm not in reasonable interval.
2. lithium battery short circuit thermal runaway fire detection method for early warning according to claim 1, which is characterized in that the level-one
Alarm decision step, specifically includes:
Voltage security parameter SU, electric current security parameter SI and temperature safety parameter ST are disposed as 1, the feature of acquisition n-th second
Parameter value；The characteristic parameter value includes voltage, operating current and battery surface temperature；
Voltage is judged whether in voltage security upper and lower limits, if being judged to normally, setting 1 for SU, otherwise, sentencing
It is set to abnormal, sets 0 for SU；Operating current is judged whether in the safe upper and lower limits of electric current, if judgement is positive
Often, 1 is set by SI, otherwise, it is determined that setting 0 for SI to be abnormal；Judge battery surface temperature whether on temperature safety
In lower range, if, be determined as normal, set 1 for ST, otherwise, it is determined that be it is abnormal, set 0 for ST；
Judge whether voltage security parameter SU, electric current security parameter SI and temperature safety parameter ST are 0, if so, by level-one report
Alert cumulative time SUM adds 1；
Judge whether level-one alarm cumulative time SUM is more than or equal to preset value, if so, generating level-one alarm, does not otherwise generate
Level-one alarm.
3. lithium battery short circuit thermal runaway fire detection method for early warning according to claim 1, which is characterized in that the second level
Alarm decision step, specifically includes:
Secondary alarm voltage security parameter SKU, electric current security parameter SKI and temperature safety parameter SKT are disposed as 1, acquisition
Characteristic parameter value per second in preset time；The characteristic parameter value includes voltage, operating current and battery surface temperature；
Linear fit is carried out to the characteristic parameter in preset time, i.e., to n-th second, (n+1) second, (n+2) second, (n+3) second and (n+
4) characteristic parameter of second carries out linear fit and obtains voltage change ratio KU, current changing rate KI and rate of temperature change KT；
Voltage change ratio KU is judged whether in voltage change ratio voltage security upper and lower limits, if being judged to normally, inciting somebody to action
SKU is set as 1, otherwise, it is determined that setting 0 for SKU to be abnormal；Judge whether current changing rate KI pacifies in current changing rate
In full upper and lower limits, if, be determined as normal, set 1 for SKI, otherwise, it is determined that be it is abnormal, set 0 for SKI；
Rate of temperature change is judged whether in the safe upper and lower limits of rate of temperature change, if being judged to normally, setting SKT to
1, otherwise, it is determined that setting 0 for SKT to be abnormal；
Judge whether voltage security parameter SKU, electric current security parameter SKI and temperature safety parameter SKT are 0, if so, generating two
Grade alarm, does not otherwise generate secondary alarm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038716A (en) * | 2020-08-14 | 2020-12-04 | 合肥国轩高科动力能源有限公司 | Early warning method for thermal runaway of lithium ion battery pack |
| CN112751095A (en) * | 2019-10-31 | 2021-05-04 | 新盛力科技股份有限公司 | System and method for monitoring temperature of battery pack in storage |
| CN117452276A (en) * | 2023-12-15 | 2024-01-26 | 深圳市力生美半导体股份有限公司 | Switch power supply performance test method and device and switch power supply |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007257334A (en) * | 2006-03-23 | 2007-10-04 | Nohmi Bosai Ltd | Fire alarm |
| CN101399441A (en) * | 2007-09-27 | 2009-04-01 | 三星Sdi株式会社 | Protection circuit for battery pack, battery pack including the protection circuit, and method of operating the battery pack |
| CN102457085A (en) * | 2010-10-15 | 2012-05-16 | 株式会社牧田 | Battery pack |
| US20120274335A1 (en) * | 2011-04-28 | 2012-11-01 | Shinichi Matsuura | Battery pack, method of determining malfunction, and a malfunction decision circuit |
| CN103496328A (en) * | 2013-09-02 | 2014-01-08 | 长安大学 | Electric vehicle power management system and method based on PLC control |
| CN104104128A (en) * | 2013-04-05 | 2014-10-15 | 株式会社牧田 | Electrical device system and battery pack |
| CN105904992A (en) * | 2016-06-07 | 2016-08-31 | 烟台创为新能源科技有限公司 | Electric vehicle battery monitoring and management system and monitoring method of batteries |
| CN106025404A (en) * | 2016-07-22 | 2016-10-12 | 圣邦微电子（北京）股份有限公司 | Internal short circuit warning detection method for lithium ion rechargeable batteries |
| CN106054083A (en) * | 2016-06-27 | 2016-10-26 | 北京新能源汽车股份有限公司 | Safety monitoring method and apparatus of power battery system |
| CN106597299A (en) * | 2016-11-22 | 2017-04-26 | 南京能启能电子科技有限公司 | Lithium battery thermal runaway early warning and automatic control method |
| CN107611513A (en) * | 2017-09-21 | 2018-01-19 | 公安部天津消防研究所 | A kind of method for monitoring lithium ion battery of electric automobile thermal runaway |
| KR20180078482A (en) * | 2016-12-30 | 2018-07-10 | 주식회사 유비넷시스 | Battery Management System of Repeater |
| CN109521315A (en) * | 2018-11-19 | 2019-03-26 | 北京新能源汽车股份有限公司 | A kind of detection method of internal short-circuit of battery, device and automobile |
| CN109786872A (en) * | 2019-03-18 | 2019-05-21 | 北京航空航天大学 | A kind of lithium ion battery thermal runaway early warning system and method |
| CN109936157A (en) * | 2019-03-18 | 2019-06-25 | 黑龙江东方学院 | A kind of micro-capacitance sensor battery management system |
-
2019
- 2019-06-28 CN CN201910577074.4A patent/CN110276925B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007257334A (en) * | 2006-03-23 | 2007-10-04 | Nohmi Bosai Ltd | Fire alarm |
| CN101399441A (en) * | 2007-09-27 | 2009-04-01 | 三星Sdi株式会社 | Protection circuit for battery pack, battery pack including the protection circuit, and method of operating the battery pack |
| CN102457085A (en) * | 2010-10-15 | 2012-05-16 | 株式会社牧田 | Battery pack |
| US20120274335A1 (en) * | 2011-04-28 | 2012-11-01 | Shinichi Matsuura | Battery pack, method of determining malfunction, and a malfunction decision circuit |
| CN104104128A (en) * | 2013-04-05 | 2014-10-15 | 株式会社牧田 | Electrical device system and battery pack |
| CN103496328A (en) * | 2013-09-02 | 2014-01-08 | 长安大学 | Electric vehicle power management system and method based on PLC control |
| CN105904992A (en) * | 2016-06-07 | 2016-08-31 | 烟台创为新能源科技有限公司 | Electric vehicle battery monitoring and management system and monitoring method of batteries |
| CN106054083A (en) * | 2016-06-27 | 2016-10-26 | 北京新能源汽车股份有限公司 | Safety monitoring method and apparatus of power battery system |
| CN106025404A (en) * | 2016-07-22 | 2016-10-12 | 圣邦微电子（北京）股份有限公司 | Internal short circuit warning detection method for lithium ion rechargeable batteries |
| CN106597299A (en) * | 2016-11-22 | 2017-04-26 | 南京能启能电子科技有限公司 | Lithium battery thermal runaway early warning and automatic control method |
| KR20180078482A (en) * | 2016-12-30 | 2018-07-10 | 주식회사 유비넷시스 | Battery Management System of Repeater |
| CN107611513A (en) * | 2017-09-21 | 2018-01-19 | 公安部天津消防研究所 | A kind of method for monitoring lithium ion battery of electric automobile thermal runaway |
| CN109521315A (en) * | 2018-11-19 | 2019-03-26 | 北京新能源汽车股份有限公司 | A kind of detection method of internal short-circuit of battery, device and automobile |
| CN109786872A (en) * | 2019-03-18 | 2019-05-21 | 北京航空航天大学 | A kind of lithium ion battery thermal runaway early warning system and method |
| CN109936157A (en) * | 2019-03-18 | 2019-06-25 | 黑龙江东方学院 | A kind of micro-capacitance sensor battery management system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751095A (en) * | 2019-10-31 | 2021-05-04 | 新盛力科技股份有限公司 | System and method for monitoring temperature of battery pack in storage |
| CN112038716A (en) * | 2020-08-14 | 2020-12-04 | 合肥国轩高科动力能源有限公司 | Early warning method for thermal runaway of lithium ion battery pack |
| CN112038716B (en) * | 2020-08-14 | 2022-06-07 | 合肥国轩高科动力能源有限公司 | Early warning method for thermal runaway of lithium ion battery pack |
| CN117452276A (en) * | 2023-12-15 | 2024-01-26 | 深圳市力生美半导体股份有限公司 | Switch power supply performance test method and device and switch power supply |
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