CN108063291B - Power battery safety valve type selecting judgment method and judge system - Google Patents
Power battery safety valve type selecting judgment method and judge system Download PDFInfo
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- CN108063291B CN108063291B CN201711375942.8A CN201711375942A CN108063291B CN 108063291 B CN108063291 B CN 108063291B CN 201711375942 A CN201711375942 A CN 201711375942A CN 108063291 B CN108063291 B CN 108063291B
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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
Abstract
The present invention relates to battery technology fields, more particularly to a kind of power battery safety valve type selecting judgment method and judge system, method includes the following steps: calculating the rate of releasing that battery thermal runaway moment generates gas according to battery weight after battery weight, thermal runaway before thermal runaway and time of releasing；The maximum pressure of battery case is obtained according to the design requirement of battery case, and calculates the pressure of releasing of safety valve according to the maximum pressure of battery case；Calculate the minimum discharge area of battery case；The safety dischtrge of battery case is calculated according to the minimum discharge area of battery case and safety valve current meter；The discharge amount of safety valve is obtained according to the design requirement of safety valve；The discharge amount of safety valve is compared with the safety dischtrge of battery case, if the discharge amount of safety valve is less than the safety dischtrge of battery case, replaces safety valve of the discharge amount greater than the safety dischtrge of battery case.The present invention is simple and convenient to operate with method, and the advantages of can safeguard battery, personnel safety.
Description
Technical field
The present invention relates to battery technology field more particularly to a kind of power battery safety valve type selecting judgment method and judgement systems
System.
Background technique
Electric car is using vehicle power supply as major impetus, and vehicle power supply generally uses power battery, in power battery box
Pressure increases and is mainly derived from two sources: (1) power battery monomer is overcharged, is punctured, squeezing etc. and leads to thermal runaway, and monomer is safe
Valve pops or shell pops and gushes out high-temperature mixed gas；(2) aerosol that extinguishing device triggering sprays.It is pressed through in appearance
It when high situation, needs quickly to guide pressure release by safe response valve, cabinet is avoided integrally to explode bring vehicle, people as far as possible
Member's damage.In the prior art, selecting judgment method when safety valve is: by Battery case net volume, the temperature difference, temperature rising-time,
Carry out explosion-proof valve and usage quantity type selecting.Calculation method is as follows: gas expansion rate=(T2-T1) ÷ 273, according to thermodynamics original
Reason, air themperature is every to increase 1 DEG C, and cubical expansivity 1/273, net volume × gas expansion rate=cabinet is interior to generate gas,
Gas ÷ temperature rising-time=required capacity is generated in cabinet, it is assumed that battery case net volume is the chest of 30L, is risen from 20 DEG C of room temperature
30min is needed to 80 DEG C of temperature, gas variation is as follows: (80-20) ÷ 273=0.22,30L × 0.22=6.6L, 6.6L ÷
30min=220ml/min, therefore the safety valve for selecting discharge to be greater than 220ml/min.
It is as follows that the above judgment method is primarily present disadvantage: (such as smoldering, rises in the case where can not only having thermal runaway for battery
Fire, explosion), handled by calculating, judging, can not really generation out of control for one or more battery gas carry out
Analysis, and the aerosol gushed out there are extinguishing device in battery case can not be calculated, judged and be handled, conclusion is inaccurate
Really.
Therefore, be badly in need of it is a kind of can accurate judgement power battery safety valve can bear the method and judgement of battery thermal runaway
System.
Summary of the invention
In view of the above problems, it proposes on the present invention overcomes the above problem or at least be partially solved in order to provide one kind
It states the power battery safety valve type selecting judgment method of problem and judges system.
First aspect present invention provides a kind of power battery safety valve type selecting judgment method, comprising the following steps:
It weighs, is respectively obtained before thermal runaway after battery weight and thermal runaway to the battery before thermal runaway and after thermal runaway
Battery weight；
The time released by the gas that measurement battery thermal runaway moment generates, obtain the time of releasing；
It is raw that battery thermal runaway moment is calculated according to battery weight after battery weight, thermal runaway before thermal runaway and time of releasing
At the rate of releasing of gas；
The maximum pressure of battery case is obtained according to the design requirement of battery case, and is calculated according to the maximum pressure of battery case
The pressure of releasing of safety valve；
Relevant parameter and battery are obtained according to battery, battery case extinguishing device, the design requirement of safety valve and measurement
The minimum discharge area of battery case is calculated in number；
The safe threshold velocity measured according to the design requirement of safety valve and bench test, respectively obtains the discharge of safety valve
The safety dischtrge of amount and battery case；
The discharge amount of safety valve is compared with the safety dischtrge of battery case, if the discharge amount of safety valve is less than battery
The safety dischtrge of case then replaces safety valve of the discharge amount greater than the safety dischtrge of battery case.
Further, safety valve is any in full open formula safety valve and spring adjustable safety valve.
Further, the relevant parameter obtained according to the design requirement of battery, battery case extinguishing device, safety valve are as follows:
The gaseous mixture molecule of cell gas characteristic coefficient, battery thermal runaway release flue gas is obtained according to the design requirement of battery
Amount, Gas Compression Factor；
The gas characteristic system of firing-fighting medium in battery case extinguishing device is obtained according to the design requirement of battery case extinguishing device
Number, aerosol gaseous mixture average molecular weight；
The discharge coefficient of safety valve is obtained according to the design requirement of safety valve；
Pass through firing-fighting medium in the mixture temperature of measurement acquisition battery thermal runaway release flue gas, battery case extinguishing device
The mixture temperature of rate of releasing and aerosol gaseous mixture；
Further, the pressure P that releases of safety valve is calculateddThe step of are as follows: by the maximum pressure P of battery casewSubstitute into formula Pd
=1.21Pw+ 0.101 obtains.
Further, the step of calculating the minimum discharge area S of battery case are as follows: battery moment out of control is generated into letting out for gas
Put rateThe flow coefficient C of safety valve, cell gas characteristic coefficient K1, battery thermal runaway release flue gas mixing
Gas molecular weight M1, Gas Compression Factor Z, battery thermal runaway release flue gas mixture temperature T1, put out a fire in battery case extinguishing device
The rate W that releases of mediums2, in battery case extinguishing device firing-fighting medium gas characteristic COEFFICIENT K2, safety valve the pressure P that releasesd、
Aerosol gaseous mixture average molecular weight M2, aerosol gaseous mixture mixture temperature T2, and the number n substitution formula of battery
It obtains.
Further, the step of calculating the safety dischtrge Q of battery case is by the minimum discharge area S of battery case, safety
Threshold velocity V substitutes into formula Q=S × V and obtains.
The second aspect of the invention provides a kind of power battery safety valve type selecting and judges system, comprising:
Parameter collection module, for the design requirement acquisition ginseng by measurement and battery, battery case extinguishing device, safety valve
Number, and it is sent respectively to the first computing module, the second computing module, third computing module and the 4th computing module；
First computing module calculates the speed of releasing of battery thermal runaway moment generation gas for parameter based on the received
Rate, and it is sent to third computing module；
Second computing module, the pressure of releasing of safety valve is calculated for parameter based on the received, and is sent to third meter
Calculate module；
Third computing module, the minimum discharge area of battery case is calculated for parameter based on the received, and is sent to
Four computing modules；
4th computing module calculates the discharge amount of safety valve and the safety relief of battery case for parameter based on the received
Amount, and it is sent to judgment module；
Judgment module for the safety dischtrge of the discharge amount of received safety valve and battery case to be compared, and is sentenced
Whether the discharge amount of disconnected safety valve is less than the safety dischtrge of battery case, and judging result is sent to terminal.
Further, the parameter of parameter collection module acquisition are as follows: battery weight after battery weight, thermal runaway before thermal runaway,
The maximum pressure of time, battery case that the gas that battery thermal runaway moment generates is released, cell gas characteristic coefficient, battery heat are lost
Controlled release put the gas characteristic coefficient of firing-fighting medium in the gaseous mixture molecular weight, Gas Compression Factor, battery case extinguishing device of flue gas,
Aerosol gaseous mixture average molecular weight, the discharge coefficient of safety valve, the mixture temperature of battery thermal runaway release flue gas, battery case
The rate of releasing of firing-fighting medium, the mixture temperature of aerosol gaseous mixture, the number of battery in extinguishing device.
Power battery safety valve type selecting judgment method provided by the invention and judge system, have compared with prior art with
Lower progress: show that rate of releasing, Battery case are set by the time released to single or multiple batteries moment out of control generation gas
Meter requires obtained maximum pressure, measures the stream that safe threshold velocity obtains minimum discharge area and battery case according to bench test
Amount, the discharge amount of safety valve is compared with the safety dischtrge of battery case, can easily judge that can safety valve hold
Situation when by battery thermal runaway, can effectively safeguard battery and personnel safety.It is simple and convenient to operate and reduces with method
The advantages of battery, personnel's damage.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
The step of Fig. 1 is the power battery safety valve type selecting judgment method in the embodiment of the present invention is schemed；
Fig. 2 is that the power battery safety valve type selecting in the embodiment of the present invention judges that the device of system connects block diagram.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term), there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, it should be understood that have in the context of the prior art
The consistent meaning of meaning, and unless otherwise will not be explained in an idealized or overly formal meaning by specific definitions.
Sln in the present invention in formula is alphabetical " l ".
The embodiment of the invention provides a kind of power battery safety valve type selecting judgment method and judge system.
Fig. 1 diagrammatically illustrates the step of power battery safety valve type selecting judgment method of one embodiment of the invention figure.
Referring to Fig.1, the power battery safety valve type selecting judgment method of the embodiment of the present invention, comprising the following steps:
The first step weighs to the battery before thermal runaway, obtains battery weight before thermal runaway；
It weighs to the battery after thermal runaway, obtains battery weight after thermal runaway；
The time released by the gas that measurement battery thermal runaway moment generates, obtain the time of releasing；
It is raw that battery thermal runaway moment is calculated according to battery weight after battery weight, thermal runaway before thermal runaway and time of releasing
At the rate of releasing of gas；
Second step obtains the maximum pressure of battery case according to the design requirement of battery case, and according to the maximal pressure of battery case
Power calculates the pressure of releasing of safety valve；
Third step, obtained according to the design requirement of battery cell gas characteristic coefficient, battery thermal runaway release flue gas it is mixed
Close gas molecular weight, Gas Compression Factor；
The gas characteristic system of firing-fighting medium in battery case extinguishing device is obtained according to the design requirement of battery case extinguishing device
Number, aerosol gaseous mixture average molecular weight；
The discharge coefficient of safety valve is obtained according to the design requirement of safety valve；
Pass through firing-fighting medium in the mixture temperature of measurement acquisition battery thermal runaway release flue gas, battery case extinguishing device
The mixture temperature of rate of releasing and aerosol gaseous mixture；
The rate of releasing of gas, the discharge coefficient of safety valve, cell gas characteristic system are generated according to battery thermal runaway moment
Number, the gaseous mixture molecular weight of battery thermal runaway release flue gas, Gas Compression Factor, battery thermal runaway discharge the mixed air temperature of flue gas
Degree, the rate of releasing of firing-fighting medium in battery case extinguishing device, in extinguishing device firing-fighting medium gas characteristic coefficient, safety valve
Pressure of releasing, aerosol gaseous mixture average molecular weight, the mixture temperature of aerosol gaseous mixture and battery number calculate
The minimum discharge area of battery case out；
4th step measures safe threshold velocity according to bench test；
The safety dischtrge of battery case is calculated according to the minimum discharge area of battery case and safety valve current meter；
5th step obtains the discharge amount of safety valve according to the design requirement of safety valve；
The discharge amount of safety valve is compared by the 6th step with the safety dischtrge of battery case, if the discharge amount of safety valve
Less than the safety dischtrge of battery case, then safety valve of the discharge amount greater than the safety dischtrge of battery case is replaced.
Power battery safety valve type selecting judgment method in the present embodiment, by raw to single or multiple batteries moment out of control
Maximum pressure that rate of releasing, Battery case design requirement obtain is obtained at the time that gas is released, is measured according to bench test
Safe threshold velocity obtains the flow of minimum discharge area and battery case out, by the safety relief of the discharge amount of safety valve and battery case
Amount is compared, and can easily judge that can safety valve bear battery thermal runaway, can effectively safeguard battery and personnel
Safety.Have the advantages that method is simple and convenient to operate and reduces battery, personnel's damage.
The power battery safety valve type selecting that Fig. 2 diagrammatically illustrates one embodiment of the invention judges the device connection of system
Block diagram.Referring to Fig. 2, the power battery safety valve type selecting of the embodiment of the present invention judges system, comprising:
Parameter collection module, for the design requirement acquisition ginseng by measurement and battery, battery case extinguishing device, safety valve
Number, and it is sent respectively to the first computing module, the second computing module, third computing module and the 4th computing module；
First computing module calculates the speed of releasing of battery thermal runaway moment generation gas for parameter based on the received
Rate, and it is sent to third computing module；
Second computing module, the pressure of releasing of safety valve is calculated for parameter based on the received, and is sent to third meter
Calculate module；
Third computing module, the minimum discharge area of battery case is calculated for parameter based on the received, and is sent to
Four computing modules；
4th computing module calculates the discharge amount of safety valve and the safety relief of battery case for parameter based on the received
Amount, and it is sent to judgment module；
Judgment module for the safety dischtrge of the discharge amount of received safety valve and battery case to be compared, and is sentenced
Whether the discharge amount of disconnected safety valve is less than the safety dischtrge of battery case, and judging result is sent to terminal.
Wherein, parameter collection module is counted with the first computing module, the second computing module, third computing module and the 4th respectively
Module electrical connection is calculated, third computing module is electrically connected with the first computing module, the second computing module respectively, the 4th computing module point
It is not electrically connected with third computing module, judgment module.
Power battery safety valve type selecting provided in an embodiment of the present invention judges system, judging result is sent to terminal, just
In it is seen that as a result, and safety valve is replaced according to result, relatively simple for structure, cost is relatively low, judging result is accurate.
In the present embodiment, the first computing module based on the received before thermal runaway after battery weight, thermal runaway battery weight and
Release the time calculate battery thermal runaway moment generate gas rate of releasingAnd it is sent to third and calculates mould
Block；
Second computing module is by the maximum pressure P of battery casewSubstitute into formula Pd=1.21Pw+ 0.101 calculates safety valve
Pressure of releasing PdAnd it is sent to third computing module；
Battery moment out of control is generated the rate of releasing of gas by third computing moduleThe flow system of safety valve
Number C, cell gas characteristic coefficient K1, battery thermal runaway release flue gas gaseous mixture molecular weight M1, Gas Compression Factor Z, battery heat
The mixture temperature T of release flue gas out of control1, in battery case extinguishing device firing-fighting medium the rate W that releasess2, battery case fire extinguishing dress
Set the gas characteristic COEFFICIENT K of middle firing-fighting medium2, safety valve the pressure P that releasesd, aerosol gaseous mixture average molecular weight M2, gas it is molten
The mixture temperature T of glue gaseous mixture2, and the number n substitution formula of battery
Calculate the minimum of battery case
Discharge area S；
4th computing module calculates the minimum discharge area S of battery case, safe threshold velocity V substitution formula Q=S × V
The safety dischtrge of battery case.
Judgment module by comparing the discharge amount of safety valve and the safety dischtrge of battery case, judges whether replace peace again
Full valve, and judging result is sent to terminal.Process is fairly simple, save the cost.
The course of work of a working Examples in the present embodiment are as follows:
Step 1: the rate of releasing of the moment generation gas out of control of single battery inside Battery case is calculatedIt is single
Position is kg/h, and ordinary circumstance thermal runaway is by single battery, i.e. the number n=1 of battery (lead by special circumstances, such as external baked wheaten cake
It causes while failing, n is the practical amount of monomer that fails simultaneously)；In actual conditions, the rate of releasing of single battery can be by heat
It weighs before and after test battery out of control, and is released rate according to time estimation of releasing；
Step 2: the rate W that releases of firing-fighting medium in battery case extinguishing device is calculateds2, unit kg/h.Actual conditions
In, the general fire extinguisher bomb service quality provided referring to producer in extinguishing device with release the time.If extinguishing device is not configured, this
Item is 0；
Step 3: pass through formula Pd=1.21Pw+ 0.101 calculates the pressure P that releases of safety valved, PwFor according to Battery case
The maximum pressure that design requirement obtains；
Step 4: the mixture temperature T of battery thermal runaway release flue gas is calculated1, unit K；
Step 5: the mixture temperature T of aerosol gaseous mixture is calculated2, unit K；
Step 6: following equation is pressed
The minimum discharge area S, unit mm of battery case can be calculated2；
Step 7: safe threshold velocity V is measured according to bench test；
Step 8: according to Q=S × V, the safety dischtrge Q for determining battery case is calculated, according to the discharge that must make safety valve
The judgment mode of ability >=battery case safety dischtrge, judges whether the discharge amount of safety valve can bear the safety of battery case and let out
High-volume, if cannot bear, the safety valve that discharge capacity is more than or equal to Q is needed replacing.
If the discharge capacity of the safety valve finally judged according to above-mentioned steps is less than the safety dischtrge of battery case, need
Replace safety valve.
In above-described embodiment, battery moment out of control generates the rate of releasing of gasThe discharge coefficient of safety valve
C, cell gas characteristic coefficient K1, battery thermal runaway release flue gas gaseous mixture molecular weight M1, Gas Compression Factor Z, battery heat lose
Controlled release puts the mixture temperature T of flue gas1, in battery case extinguishing device firing-fighting medium the rate W that releasess2, battery case extinguishing device
The gas characteristic COEFFICIENT K of middle firing-fighting medium2, safety valve the pressure P that releasesd, aerosol gaseous mixture average molecular weight M2, aerosol
The mixture temperature T of gaseous mixture2, and the number n of battery, the minimum discharge area S of battery case, safe threshold velocity V, battery case
Safety dischtrge Q, battery case maximum pressure Pw。
The power battery safety valve type selecting judgment method of the present embodiment, operation and use are fairly simple, have maintenance battery
And the advantages of personnel safety.
The embodiment of third aspect present invention provides a kind of computer storage medium for encoding and having computer program, should
Program includes that power battery safety valve type selecting can be made to judge system when judging that system executes by power battery safety valve type selecting
The instruction of execution method, this method include method described in any embodiment in above-described embodiment.
The embodiment of fourth aspect present invention, provides a kind of computer equipment, including memory, processor and is stored in
On memory and the computer program that can run on a processor, the processor realize such as above-mentioned implementation when executing described program
In example the step of any embodiment the method.
For embodiment of the method, for simple description, therefore, it is stated as a series of action combinations, but this field
Technical staff should be aware of, and embodiment of that present invention are not limited by the describe sequence of actions, because implementing according to the present invention
Example, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art should also know that, specification
Described in embodiment belong to preferred embodiment, the actions involved are not necessarily necessary for embodiments of the present invention.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of power battery safety valve type selecting judgment method, which comprises the following steps:
It weighs to the battery before thermal runaway and after thermal runaway, respectively obtains before thermal runaway battery after battery weight and thermal runaway
Weight；
The time released by the gas that measurement battery thermal runaway moment generates, obtain the time of releasing；
Battery thermal runaway moment generation gas is calculated according to battery weight after battery weight, thermal runaway before thermal runaway and time of releasing
The rate of releasing of body；
The maximum pressure of battery case is obtained according to the design requirement of battery case, and safety is calculated according to the maximum pressure of battery case
The pressure of releasing of valve；
According to the design requirement of battery obtain cell gas characteristic coefficient, battery thermal runaway release flue gas gaseous mixture molecular weight,
Gas Compression Factor；
Gas characteristic coefficient, the gas of firing-fighting medium in battery case extinguishing device are obtained according to the design requirement of battery case extinguishing device
Colloidal sol gaseous mixture average molecular weight；
The discharge coefficient of safety valve is obtained according to the design requirement of safety valve；
Obtain that battery thermal runaway discharges the mixture temperature of flue gas, firing-fighting medium releases in battery case extinguishing device by measurement
The mixture temperature of rate and aerosol gaseous mixture；
The rate of releasing of gas, the discharge coefficient of safety valve, cell gas characteristic coefficient, electricity are generated according to battery thermal runaway moment
Pond thermal runaway discharges the mixture temperature of gaseous mixture molecular weight, Gas Compression Factor, battery thermal runaway the release flue gas of flue gas, electricity
The rate of releasing of firing-fighting medium in the case extinguishing device of pond, the gas characteristic coefficient of firing-fighting medium in extinguishing device, safety valve are let out
It bleeds off pressure power, aerosol gaseous mixture average molecular weight, the mixture temperature of aerosol gaseous mixture and the number of battery and calculates electricity
The minimum discharge area of pond case；
The safe threshold velocity measured according to the design requirement of safety valve and bench test, respectively obtain safety valve discharge amount and
The safety dischtrge of battery case；
The discharge amount of safety valve is compared with the safety dischtrge of battery case, if the discharge amount of safety valve is less than battery case
Safety dischtrge then replaces safety valve of the discharge amount greater than the safety dischtrge of battery case.
2. power battery safety valve type selecting judgment method according to claim 1, which is characterized in that safety valve is full open
Any in formula safety valve and spring adjustable safety valve.
3. power battery safety valve type selecting judgment method according to claim 2, which is characterized in that calculate letting out for safety valve
Bleed off pressure power PdThe step of are as follows: by the maximum pressure P of battery casewSubstitute into formula Pd=1.21Pw+ 0.101 obtains.
4. power battery safety valve type selecting judgment method according to claim 3, which is characterized in that calculate battery case most
The step of small discharge area S are as follows: battery thermal runaway moment is generated to the rate of releasing of gasThe stream of safety valve
Coefficient of discharge C, cell gas characteristic coefficient K1, battery thermal runaway release flue gas gaseous mixture molecular weight M1, Gas Compression Factor Z, electricity
The mixture temperature T of pond thermal runaway release flue gas1, in battery case extinguishing device firing-fighting medium the rate W that releasess2, battery case goes out
The gas characteristic COEFFICIENT K of firing-fighting medium in fiery device2, safety valve the pressure P that releasesd, aerosol gaseous mixture average molecular weight M2、
The mixture temperature T of aerosol gaseous mixture2, and the number n substitution formula of battery
It obtains.
5. power battery safety valve type selecting judgment method according to claim 4, which is characterized in that calculate the peace of battery case
The step of full amount of releasing Q are as follows: obtain the minimum discharge area S of battery case, safe threshold velocity V substitution formula Q=S × V.
6. a kind of power battery safety valve type selecting judges system characterized by comprising
Parameter collection module, for passing through the design requirement acquisition parameter of measurement and battery, battery case extinguishing device, safety valve,
And it is sent respectively to the first computing module, the second computing module, third computing module and the 4th computing module；
First computing module calculates the rate of releasing of battery thermal runaway moment generation gas for parameter based on the received, and
It is sent to third computing module；
Second computing module, the pressure of releasing of safety valve is calculated for parameter based on the received, and is sent to third and is calculated mould
Block；
Third computing module, the minimum discharge area of battery case is calculated for parameter based on the received, and is sent to the 4th meter
Calculate module；
4th computing module calculates the discharge amount of safety valve and the safety dischtrge of battery case for parameter based on the received,
And it is sent to judgment module；
Judgment module for the safety dischtrge of the discharge amount of received safety valve and battery case to be compared, and judges to pacify
Whether the discharge amount of full valve is less than the safety dischtrge of battery case, and judging result is sent to terminal.
7. power battery safety valve type selecting according to claim 6 judges system, which is characterized in that parameter collection module is adopted
The parameter of collection are as follows: the gas that battery weight after battery weight, thermal runaway, battery thermal runaway moment generate before thermal runaway release when
Between, the maximum pressure of battery case, cell gas characteristic coefficient, battery thermal runaway release the gaseous mixture molecular weight of flue gas, gas pressure
The gas characteristic coefficient of firing-fighting medium in the contracting factor, battery case extinguishing device, aerosol gaseous mixture average molecular weight, safety valve
Discharge coefficient, the battery thermal runaway release mixture temperature of flue gas, the rate of releasing of firing-fighting medium, gas in battery case extinguishing device
Mixture temperature, the number of battery of colloidal sol gaseous mixture.
8. a kind of encode the computer storage medium for having computer program, which includes working as to be sentenced by power battery safety valve type selecting
Disconnected system can make power battery safety valve type selecting judge that system executes the instruction of method when executing, which is characterized in that this method
Including method described in any claim in claim 1-5.
9. a kind of computer equipment including memory, processor and stores the meter that can be run on a memory and on a processor
Calculation machine program, which is characterized in that the processor is realized when executing described program such as any one of claim 1-5 the method
Step.
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| CN113410561A (en) * | 2021-05-31 | 2021-09-17 | 广州小鹏汽车科技有限公司 | Design method and device of battery pack, battery pack and vehicle |
| CN115513597B (en) * | 2022-10-11 | 2024-04-19 | 国网江苏省电力有限公司电力科学研究院 | Lithium iron phosphate battery |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316106A (en) * | 1998-08-14 | 2001-10-03 | 摩尔科技能源系统公司 | Electrochemical cell safety vent |
| JP2003197483A (en) * | 2001-12-26 | 2003-07-11 | Nok Corp | Pressure relief valve |
| CN1961448A (en) * | 2004-06-02 | 2007-05-09 | 丰田自动车株式会社 | Failure diagnosis device for exhaust valves |
| CN106207281A (en) * | 2016-07-25 | 2016-12-07 | 温州大学 | Based on Brittleness Theory of Complex System with heat ray filter electrokinetic cell system method for designing |
| CN106654446A (en) * | 2016-11-28 | 2017-05-10 | 北方工业大学 | Battery module and consumer |
| CN107437639A (en) * | 2017-06-14 | 2017-12-05 | 北京理工大学 | Lithium-ion-power cell thermal runaway security method and device |
-
2017
- 2017-12-19 CN CN201711375942.8A patent/CN108063291B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316106A (en) * | 1998-08-14 | 2001-10-03 | 摩尔科技能源系统公司 | Electrochemical cell safety vent |
| JP2003197483A (en) * | 2001-12-26 | 2003-07-11 | Nok Corp | Pressure relief valve |
| CN1961448A (en) * | 2004-06-02 | 2007-05-09 | 丰田自动车株式会社 | Failure diagnosis device for exhaust valves |
| CN106207281A (en) * | 2016-07-25 | 2016-12-07 | 温州大学 | Based on Brittleness Theory of Complex System with heat ray filter electrokinetic cell system method for designing |
| CN106654446A (en) * | 2016-11-28 | 2017-05-10 | 北方工业大学 | Battery module and consumer |
| CN107437639A (en) * | 2017-06-14 | 2017-12-05 | 北京理工大学 | Lithium-ion-power cell thermal runaway security method and device |
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| CN108063291A (en) | 2018-05-22 |
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