CN107356879A - A kind of cell health state detection and appraisal procedure and change system based on multiple physical field - Google Patents
A kind of cell health state detection and appraisal procedure and change system based on multiple physical field Download PDFInfo
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- CN107356879A CN107356879A CN201710541332.4A CN201710541332A CN107356879A CN 107356879 A CN107356879 A CN 107356879A CN 201710541332 A CN201710541332 A CN 201710541332A CN 107356879 A CN107356879 A CN 107356879A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000036541 health Effects 0.000 title claims abstract description 26
- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 230000008859 change Effects 0.000 title claims abstract description 17
- 230000005611 electricity Effects 0.000 claims abstract description 11
- 230000003862 health status Effects 0.000 claims abstract description 11
- 230000005291 magnetic effect Effects 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 22
- 238000000371 solid-state nuclear magnetic resonance spectroscopy Methods 0.000 claims description 21
- 230000032683 aging Effects 0.000 claims description 14
- 238000011065 in-situ storage Methods 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 8
- 238000004458 analytical method Methods 0.000 claims description 5
- 238000009659 non-destructive testing Methods 0.000 claims description 5
- 238000011156 evaluation Methods 0.000 claims description 3
- 230000005311 nuclear magnetism Effects 0.000 claims description 3
- 230000005518 electrochemistry Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 6
- 239000003792 electrolyte Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000010406 cathode material Substances 0.000 abstract description 2
- 230000008021 deposition Effects 0.000 abstract description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 230000035800 maturation Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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Abstract
The present invention, which provides a kind of cell health state detection based on multiple physical field and appraisal procedure, this method, to be included：The structure and performance information for collecting battery are detected based on multiple physical fields such as electricity, thermal and magnetics, quick obtain specifies the information such as cathode material structure evolution, negative pole ion deposition state, change of electrolyte under charging and discharging state, chemical property and internal structural information under different health status are compared one by one, related data is analyzed, be fitted and modeled, establishes the cell health state standard comprising structure and performance information；Quick Acquisition and the multiple physical field status information for comparing battery, assess its health status, realize lossless high frequency zone.The present invention also provides a kind of cell health state detection based on multiple physical field with assessing change system.This method and change system can solve that existing battery health appraisal procedure efficiency is low, accuracy is poor and does not have the problems such as universality, be battery echelon using technology and equipment guarantee is provided, promote new-energy automobile industry to develop in a healthy way.
Description
Technical field
The present invention relates to a kind of field of battery detecting, especially a kind of cell health state detection based on multiple physical field
With appraisal procedure and change system, belong to cell art.
Background technology
It is increasingly wide to the demand of clean environment firendly battery with generation of electricity by new energy and the fast development of ev industry,
Lithium battery achieves progress with rapid changepl. never-ending changes and improvements as the energy storage technology of maturation.The data announced according to Ministry of Industry and Information show that 2016 complete
Year lithium battery totals yield 78.42 hundred million, accumulative to increase by 35.8% on a year-on-year basis；Wherein of that month completion yield 8.44 hundred million in December
Naturally only, 26.1% is increased by a year-on-year basis.And in new-energy automobile industrial field, market was in explosive growth since 2014, only
For New Energy Sources In China automobile sales volume in 2016 up to 50.7 ten thousand, market cumulative amount reaches 1,000,000.
The service life of electrokinetic cell is usually 5-8, it means that since 2018, China entered market in the first batch
New-energy automobile power battery will face the problem of scrapping recovery.It was predicted that to before and after the year two thousand twenty, China's Vehicular dynamic battery tires out
The estimated scale that will reach 200,000 tons of meter learies, and with the development of new-energy automobile and the passage of time, power electric
The pressure of pond recovery can be increasing, and limits the greatest problem that battery echelon utilizes is how to realize the healthy shape of recovery battery
State is detected and assessed, and there is presently no the Non-Destructive Testing and assessment that the technology of maturation and method can realize cell health state.
The content of the invention
The present invention, which provides a kind of cell health state detection based on multiple physical field and appraisal procedure, this method, to be included：Base
The structure and performance information for collecting battery are detected in multiple physical fields such as electricity, thermal and magnetics, quick obtain specifies positive pole under charging and discharging state
The information such as material structure evolution, the change of negative pole ion deposition state, electrolyte ingredient, compare the electricity under different health status one by one
Chemical property and internal structural information, related data is analyzed, be fitted and modeled, established comprising structure and performance information
Cell health state standard；Quick Acquisition and the multiple physical field status information for comparing battery, assess its health status, realize lossless
High frequency zone.The present invention also provides a kind of cell health state detection based on multiple physical field with assessing change system.This method
It is battery and change system can solve that existing battery health appraisal procedure efficiency is low, accuracy is poor and does not have the problems such as universality
Echelon promotes new-energy automobile industry to develop in a healthy way using technology and equipment guarantee is provided.
In a first aspect, the present invention provides a kind of cell health state detection based on multiple physical field and appraisal procedure, specifically
Step is：
This method includes two stages, a multiple physical field information gathering, modeling and material system mode bit figure calibration phase and
One Non-Destructive Testing and evaluation stage, wherein, the multiple physical field information gathering, modeling and material system mode bit icon determine rank
Section comprises the following steps：
S1, quick aging is carried out to demarcation system Sample Cell, while apply three kinds of electricity, thermal and magnetic physical fields, gather different SOH
Under element contained by battery material system under specific SOC solid-state nmr information and battery electrical property information in situ；
S2, data statistics, analysis are carried out to the information of S1 collections, establish SOC- original positions solid-state nmr information-SOH bitmap models；
S3, the SOC- original positions solid-state nmr information-SOH bitmap models established according to S2, builds comprising battery material architecture
The SOH standard file cards of information and battery electrical property information；
The Non-Destructive Testing comprises the following steps with evaluation stage：
S4, the multiple physical field status information of mesuring battary is gathered, include the original of element contained by battery SOC and battery material system
Position solid-state nmr information；
S5, to mark SOC- original positions solid-state nmr information-SOH bitmap standard file cards, the SOH of battery is assessed, realizes that SOH is lossless and sentences
It is fixed.
Quick aging is carried out to demarcation system Sample Cell in above-mentioned steps S1, accelerates electricity using multiplying power alternating temperature aging techniques
Pond life test, using high current charge-discharge until battery end of life.
Above-mentioned alternating temperature aging temperature selection is selected according to battery material system, and temperature range section is -150 DEG C to+300
℃。
For nCa, wherein n >=1, Ca are electricity for the above-mentioned charging current for using high current charge-discharge life test and discharge current
The rated capacity value in pond.
Battery electrical property information includes cell voltage, SOC, impedance, capacity in above-mentioned steps S1.
Inquiry, which compares, when the battery SOH standards file card established in above-mentioned steps S3 is for state estimation uses, the SOH standards
File card includes battery SOC, voltage, impedance, capacity, the solid-state nmr information in situ of element contained by battery material system.
In above-mentioned steps S5：Pass through the solid-state in situ of element contained by the SOC- battery material systems that are collected in step S4
Nuclear-magnetism structural information is compared with the SOH standard archives cards in step S3, determines the health status of battery.
Second aspect, the present invention provide a kind of cell health state detection based on multiple physical field with assessing change system,
The change system includes：
In situNMR state acquisition system, for realizing the solid-state nmr information gathering in situ in the above method, obtain battery material
The nuclear-magnetism information of element contained by material system；
Alternating temperature aging equipment, for realizing the temperature control of accelerated ageing test in the above method；
Electrochemistry perturbation test system, for realizing in the above method that battery charging and discharging is tested, obtain the voltage of battery, impedance,
Capacity, SOH electrical property information；
SOH standard state archives economies, for realizing the foundation of SOH standards file card in the above method, inquiry compares, and assesses true
Surely the health status of tested battery.
It is polynary that above-mentioned change system can apply electricity, thermal and magnetic while quick aging is carried out to demarcation system Sample Cell
Physical field, it is electrical to gather element original position solid-state nmr information and battery contained by the battery material system under different SOH under specific SOC
Can information；By data statistics, analysis, SOC- original positions solid-state nmr information-SOH bitmap models are established, builds and believes comprising structure
The SOH standard file cards of breath and electrical property information；It is in situ to mark SOC- by gathering the multiple physical field status information of mesuring battary
Solid-state nmr information-SOH bitmap standard file cards, SOH states are assessed, realize the lossless judgements of SOH.
Advantage for present invention：Patent of the present invention detects the structure and property for collecting battery based on multiple physical fields such as electricity, thermal and magnetics
Energy information, quick obtain specify cathode material structure evolution, negative electrode lithium ion sedimentation state, electrolyte ingredient under charging and discharging state
The information such as change, compare the chemical property and internal structural information under different health status, related data are divided one by one
Analysis, fitting and modeling, establish the lithium battery health status standard comprising structure and performance information；Quick Acquisition simultaneously compares battery
Multiple physical field status information, its health status is assessed, realize lossless high frequency zone, this method and equipment can solve existing battery and be good for
Health appraisal procedure efficiency is low, accuracy is poor and does not have the problems such as universality, is utilized for battery echelon and provides technology and equipment guarantee,
New-energy automobile industry is promoted to develop in a healthy way.
Brief description of the drawings
Fig. 1 is cell health state detection and the schematic flow sheet of appraisal procedure of the present invention.
Fig. 2 is system block diagram of the cell health state detection of the present invention with assessing change system.
Claims (9)
1. a kind of cell health state detection and appraisal procedure based on multiple physical field, it is characterised in that this method includes two
Stage, a multiple physical field information gathering, modeling and material system mode bit figure calibration phase and a Non-Destructive Testing are with assessing
Stage, wherein, the multiple physical field information gathering, modeling and material system mode bit figure calibration phase comprise the following steps：
S1, quick aging is carried out to demarcation system Sample Cell, while apply three kinds of electricity, thermal and magnetic physical fields, gather different SOH
Under element contained by battery material system under specific SOC solid-state nmr information and battery electrical property information in situ；
S2, data statistics, analysis are carried out to the information of S1 collections, establish SOC- original positions solid-state nmr information-SOH bitmap models；
S3, the SOC- original positions solid-state nmr information-SOH bitmap models established according to S2, builds comprising battery material architecture
The SOH standard file cards of information and battery electrical property information；
The Non-Destructive Testing comprises the following steps with evaluation stage：
S4, the multiple physical field status information of mesuring battary is gathered, include the original of element contained by battery SOC and battery material system
Position solid-state nmr information；
S5, to mark SOC- original positions solid-state nmr information-SOH bitmap standard file cards, the SOH of battery is assessed, realizes that SOH is lossless and sentences
It is fixed.
2. the detection of the cell health state based on multiple physical field and appraisal procedure as described in claim 1, it is characterised in that step
Quick aging is carried out to demarcation system Sample Cell in rapid S1, accelerates battery life test using multiplying power alternating temperature aging techniques, adopts
With high current charge-discharge until battery end of life.
3. the detection of the cell health state based on multiple physical field and appraisal procedure as described in claim 2, it is characterised in that become
Warm aging temperature selection is selected according to battery material system, and temperature range section is -150 DEG C to+300 DEG C.
4. the detection of the cell health state based on multiple physical field and appraisal procedure as described in claim 2, it is characterised in that institute
Using charging current and the discharge current of high current charge-discharge life test, wherein n >=1, Ca are the rated capacities of battery for nCa
Value.
5. the detection of the cell health state based on multiple physical field and appraisal procedure as described in claim 1, it is characterised in that step
Battery electrical property information includes cell voltage, SOC, impedance, capacity in rapid S1.
6. the detection of the cell health state based on multiple physical field and appraisal procedure as described in claim 1, it is characterised in that
Inquiry, which compares, when the battery SOH standards file card established in step S3 is for state estimation uses, and the SOH standard file cards include
Battery SOC, voltage, impedance, capacity, the solid-state nmr information in situ of element contained by battery material system.
7. the detection of the cell health state based on multiple physical field and appraisal procedure as described in claim 1, it is characterised in that
In step S5：By the solid-state nmr structural information in situ of element contained by the SOC- battery material systems that are collected in step S4 with
SOH standard archives cards in step S3 are compared, and determine the health status of battery.
8. a kind of cell health state detection based on multiple physical field is with assessing change system, it is characterised in that the change system
Including：
In situNMR state acquisition system, for realizing claim 1, claim 5, claim 7 situ solid-state nmr
Information gathering, obtain the nuclear-magnetism information of element contained by battery material system；
Alternating temperature aging equipment, for realizing the temperature control of accelerated ageing test in claim 1, claim 2, claim 3
System；
Electrochemistry perturbation test system, for realizing, battery charging and discharging is tested in claim 1, claim 4, obtains battery
Voltage, impedance, capacity, SOH electrical property information；
SOH standard state archives economies, for realizing the foundation of SOH standards file card in claim 1, claim 6, inquiry
Compare, assess the health status for determining tested battery.
9. the detection of the cell health state based on multiple physical field as described in claim 8 exists with assessing change system, its feature
In, the change system can apply electricity, the polynary physical field of thermal and magnetic while quick aging is carried out to demarcation system Sample Cell,
Gather element original position solid-state nmr information and battery electrical property information contained by the battery material system under different SOH under specific SOC；
By data statistics, analysis, establish SOC- original positions solid-state nmr information-SOH bitmap models, build comprising structural information and electrically
The SOH standard file cards of energy information；By gathering the multiple physical field status information of mesuring battary, to mark SOC- original positions solid-state nmr
Information-SOH bitmap standard file cards, SOH states are assessed, realize the lossless judgements of SOH.
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| US11515587B2 (en) * | 2019-10-10 | 2022-11-29 | Robert Bosch Gmbh | Physics-based control of battery temperature |
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