CN104600388A - Method for monitoring safety performances of batteries and capacitors on line - Google Patents
Method for monitoring safety performances of batteries and capacitors on line Download PDFInfo
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- CN104600388A CN104600388A CN201510025487.3A CN201510025487A CN104600388A CN 104600388 A CN104600388 A CN 104600388A CN 201510025487 A CN201510025487 A CN 201510025487A CN 104600388 A CN104600388 A CN 104600388A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 43
- 238000012544 monitoring process Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000011888 foil Substances 0.000 claims description 65
- 238000012360 testing method Methods 0.000 claims description 19
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 11
- 230000008859 change Effects 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 5
- 238000004458 analytical method Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005474 detonation Methods 0.000 abstract 1
- 238000010249 in-situ analysis Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 7
- 239000000178 monomer Substances 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 206010016766 flatulence Diseases 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 235000008708 Morus alba Nutrition 0.000 description 2
- 240000000249 Morus alba Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001006 Constantan Inorganic materials 0.000 description 1
- 235000009161 Espostoa lanata Nutrition 0.000 description 1
- 240000001624 Espostoa lanata Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910001228 Li[Ni1/3Co1/3Mn1/3]O2 (NCM 111) Inorganic materials 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- ZONODCCBXBRQEZ-UHFFFAOYSA-N platinum tungsten Chemical compound [W].[Pt] ZONODCCBXBRQEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- 239000000523 sample Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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Classifications
-
- 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
-
- 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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to a method for monitoring safety performances of batteries and capacitors on line, belongs to the field of energy security correlation, and aims at effectively monitoring macro-deformation of batteries and capacitors caused by micro strain on line, effectively managing the safety performances such as heat effect and gas inflation in real time, early warning the accident, eliminating the potential safety hazards such as detonation, and analyzing the accident causes on line. According to the technical scheme, a nondestructive strain detection method is adopted, strain gages are distributed on the surfaces of the batteries and capacitors, the strain change in the operating process is monitored in real time, a to-be-failed assembly is subjected to early warning and is processed, the effective safety management of a power supply and in-situ analysis of the failure process and causes can be promoted, and the accident is eliminated in a forming state. The nondestructive method for monitoring the deformation safety performances of batteries and capacitors on line is simple, rapid, accurate and high in operability and is suitable for long-term reliable safety pre-warning and accident analysis of energy devices.
Description
Technical field
The present invention discloses a kind of method of harmless, online monitoring battery and capacitor safe performance reliably and with long-term, relate to early warning failure in running of battery or capacitor (containing electrolytic capacitor and ultracapacitor) and the power supply bag formed or power pack thereof and security monitoring management, belong to energy security and association area.
Background technology
Its extensive use of safety problem extreme influence such as bulge, leakage, blast, burning that the power supply bag of battery or capacitor monomer and composition thereof or power pack cause due to deformation, so carry out monitoring in real time to its deformation to be conducive to the safety management of power supply.In the common method of testing battery deformation at present, not only accuracy is not high for the method for test size, and error is large, and working strength is large, is not suitable for the online real-time security monitoring of a large amount of monomer, power supply bag or power pack; Except can not on a large scale except online real-time security monitoring, and there is the easy short circuit of electrode in drainage, packages in damaged condition can discharge noxious substance, even causes the safety problems such as burning, blast.In addition, at present not to the effective measures of the deformation phenomenon monitoring that the flatulence in battery and capacitor During Process of Long-term Operation and thermal effect etc. cause.Therefore, lossless audio coding power safety technology is extremely urgent fast, easily to find one, most important to the power safety management in the running such as electric motor car, stand-by power supply.In addition, the power supply bag of airtight battery or capacitor monomer and composition thereof or power pack are actually a kind of pressure vessel, the heat produced in its running or gas can cause outer packing shell tool generation deformation, occur to reveal or blast time serious, and the flammable solvent spilt also can cause burning.The strain of microcosmic angle gathers and to a certain degree can cause obvious deformation, thus produce the strain value of deformation and stress value closely related, can be converted by formula.Therefore, be feasible by monitoring its security performance to the strain variation of the generation deformation in power supply running.
As the nondestructive strain measurement of one and detection methods, straingauge can measure the strain of arbitrfary point on the quiet dynamic tensile of material and compression strain and material.According to frequency response range, straingauge can be divided into statical strain indicator, static-dynamic strainometer, dynamic strain indicator and high dynamic strain indicator.Not change in time or change static strain static resistance straingauge detection very slowly, can only measure the strain of a point at every turn; Time dependent dynamic strain dynamic resistance strain instrument detects, be made up of measuring bridge amplifier and filter etc., generally there is multiple passage to measure multiple dynamic strain signal, each channel measurement dynamic strain signal, dynamic strain time to time change, directly reflects size and the change of tested strain signal.Battery and capacitor in running because microstrain can cause obvious macroscopic deformation.So utilize straingauge that the battery of foil gauge collection and the strain information of capacitor are transferred to computer after conversion, realize computer on-line monitoring reliably and with long-term.
The technology and method defect of deformation is caused in order to overcome current test battery and the behavior of capacitor flatulence and thermal effect, make up the deficiency not having lossless audio coding battery and capacitor safe performance at present, the straingauge that utilizes of novelty of the present invention can't harm the power supply bag of on-line monitoring battery and capacitor and composition thereof or the security performance of power pack, by foil gauge reasonable layout at battery and capacitor surface, monitor its security performance by the strain variation detecting battery and capacitor generation deformation.This inventive method is convenient, easy to operate, accurately and reliably, and power supply is not damaged, when deformation quantity exceedes secure threshold, automatically stop the large power supply of deformation quantity by computer software, danger is eliminated in bud, also strain can be converted into stress, evaluate the stress distribution in battery and capacitor running and Changing Pattern thereof, for the harmless reliably and with long-term safety on line management of power supply provides technical support.
Summary of the invention
The object of the invention is to solve the problem, overcome the deficiencies in the prior art, a kind of key process technology for battery and capacitor safe performance monitoring is provided, adopt the strain detecting method monitoring battery and the bag of capacitor monomer and composition thereof or the security performance of group that can't harm, inventive method is accurate, sensitive, reliable, response time is short, can realize can't harm online reliably monitoring for a long time.
Basic conception of the present invention is: the macroscopic deformation caused by microstrain can occur in running for the bag of battery and capacitor monomer and composition thereof or group, from microcosmic angle, the foil gauge being distributed in power supply surface is utilized to monitor strain variation in their running, security performance is monitored with associating between stress by strain, there is large deformation in prevention, effective early warning is carried out to security incident, also on-line analysis can be carried out to security incident reason, method fast, accurately, easy operation, power supply is not destroyed, small investment, profitable.
Object of the present invention realizes in the following manner: foil gauge is distributed in mesuring battary and capacitor surface assigned address by certain way, is connected by foil gauge with straingauge, monitors its security performance in real time by the deformation of monitoring battery and capacitor.
Described certain way refers to the foil gauge arrangement mode of applicable battery and capacitor shape, and the arrangement position of foil gauge and spacing meet tests and required precision.
Described distribution to refer to foil gauge by adhesives, at battery and capacitor surface, having enough adhesion strengths therebetween to ensure common eigenvector, do not have bubble, tilting, short circuit phenomenon.
Described assigned address refers to the test point of the geometric center of battery and capacitor surface, edge equivalent position, stress situation complex area, high stress concentration zone and ask for something.
Described real-time monitoring refers to the strain variation of battery and capacitor to carry out in-service monitoring and control by straingauge.
Described straingauge refers to statical strain indicator, static-dynamic strainometer, dynamic strain indicator and high dynamic strain indicator.
Described adhesive refers to the sticking material of the tool of good insulating, and insulation resistance is higher than 100 M Ω.
Coefficient of linear expansion and the serviceability temperature of described foil gauge meet test request, the deformation coefficients match of coefficient of linear expansion and battery and capacitor.
The invention has the beneficial effects as follows: the power supply bag or the power pack safety problem that solve battery and capacitor and composition thereof are difficult to the real-time technical barrier monitored, creationaryly propose a kind of method that be can't harm on-line monitoring power safety performance by be measured surperficial foil gauge by straingauge, foil gauge is distributed in power supply to be measured surface by certain way and is connected with straingauge, can by the stress in strain calculation power supply or residual stress, and can change by its strain and stress of real time and on line monitoring in power supply running, power supply is not damaged, be similar to electrocardiogram test, fast, accurately, convenient, by software control, early warning is carried out to the large power supply of deformation quantity and takes measures on customs clearance, by deformation, blast, the hazards such as burning are eliminated in bud, require low to battery or capacitor monomer and combination thereof and test environment, be applicable to the security performance real time on-line monitoring of extensive power supply apparatus.The invention solves the technical barrier to battery and capacitor (when especially quantity is many) real time and on line monitoring, compensate at present cannot actual time safety supervision technical deficiency, there is very high using value.
Accompanying drawing explanation
The foil gauge distribution schematic diagram of Fig. 1 on-line monitoring battery and battery pack security performance.
The foil gauge distribution schematic diagram of Fig. 2 on-line monitoring button cell security performance.
The foil gauge distribution schematic diagram of the square flexible-packed battery security performance of Fig. 3 on-line monitoring.
The foil gauge distribution schematic diagram of Fig. 4 on-line monitoring 18650 prismatic battery security performance.
The foil gauge distribution schematic diagram of Fig. 5 on-line monitoring column ultracapacitor security performance.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the invention will be further described; described content be only the present invention conceive under basic explanation; but the present invention is not limited to example below, any equivalent transformation done according to technical scheme of the present invention, all belongs to protection scope of the present invention.
embodiment 1
Adopt the security performance in the battery pack running of the difform battery of the long-time real time and on line monitoring of multichannel dynamic resistance strain instrument and composition thereof, the distribution schematic diagram of foil gage on difformity battery and battery pack as shown in Figure 1, equivalent position on the face diagonal intersection point and face of rectangular cell pastes foil gauge, foil gauge is pasted at the centerand edge equivalent position of circular batteries, position, upper, middle and lower and the edge equivalent position of cylindrical battery paste foil gauge, and battery pack pastes foil gauge in the side of each battery.Concrete implementation step is as follows: 1) foil gauge is selected: according to test request, select foil resistance foil gauge, strain limit is no more than 50%, and adopt suitable temperature-compensating according to probe temperature difference, serviceability temperature meets test condition requirement, 2) foil gauge checks before pasting: paste before foil gauge check whether foil gauge exists short circuit, open circuit, damage, fracture, bubble, the phenomenon such as to go mouldy, detect its resistance with ohmmeter or direct-current bridge, ensure that the resistance error of foil gauge is no more than ± 0.5 Ω, 3) surface treatment and location: with coarse sand mulberry paper and fine sand mulberry paper successively being greater than foil gauge area about 2 ~ 5 times, divest the battery surface of external packing and paste position and polish, evenly trickle 45o cross waves is got along paster direction, ensure flatness and the fineness of paste position, then use fine steel needle in the setting-out gently of measured point place, the roughness on surface is increased to
3 ~ 7, ensure that foil gauge firmly successfully can be pasted onto battery surface, draw paster position line with draw point simultaneously, 4) surface cleaning process: before pasting foil gauge, clean measured point place greasy dirt with the rayon balls dipping in upper acetone or alcohol, without till obvious oil stain and dust on cotton balls, and the surface after cleaning can not be touched with hand, if not paster immediately, need to be coated with last layer vaseline as temporary protection, 5) strain gauge adhesion and solidification: the lead-out wire pinching foil gauge with tweezers gently, the rhumb line of foil gauge is aimed at the position line in advance on battery and is placed on location for paste gently, the termination pushing down foil gauge with sheet plastic gently makes it there is certain angle with adhesive surface, the filament speckling with 502 glue be placed on gently angle and slowly move, until glue after the dispersion of angle, pick up the plastic plate be pressed on foil gauge, for preventing the unnecessary glue in the inside and bubble, at foil gauge upper cover last layer Waxpaper, with finger, roll extrusion Waxpaper is surperficial gently repeatedly, after glue and bubble are extruded completely, also should keep finger motionless about about one minute, be cured at room temperature, curing process specification in strict accordance with adhesive operates, control curing temperature well, time and cycle period, foil gauge after solidification should be coated dilution adhesive as moisture protection layer, 6) strain gauge adhesion quality examination: the sticking Quality checking foil gauge, guarantee there is no bubble, tilting, short circuit phenomenon, if normal, a slice binding post is pasted near the lead-out wire of foil gauge, to go between and to be connected with terminal, with adhesive plaster, lead-in wire and tested battery or battery pack are fixed together, prevent lead-in wire and foil gauge from departing from, below lead-out wire, paste one deck insulating tape simultaneously, whether be not less than 100M Ω with the insulation resistance between the lead-out wire of universal instrument monitor strain sheet and metal specimen again, whether conducting resistance is lower than 1 Ω, 7) straingauge and monitoring is connected: if passed examination, by the lead-out wire of one end of measure traverse line near foil gauge, straingauge is accessed by after foil gauge lead-out wire and measure traverse line soldering, by the output signal of straingauge input computer, the strain produced by computer monitoring battery and battery pack deformation and monitor security performance in real time, also can utilize the stress in strain calculation battery and battery pack and residual stress distribution situation, on-line analysis is carried out to the failure procedure of battery and battery pack and reason.
embodiment 2
Adopt the flatulence security performance in multichannel distributed static resistance strain testing monitoring button cell running, the distribution schematic diagram of foil gauge on button cell as shown in Figure 2, the fail safe of Φ 0.02 ~ 0.05mm constantan wire foil gauge button type battery is adopted to monitor, by foil gauge by the centerand edge equivalent position of thin layer epoxy resin secure bond at button cell, for guaranteeing insulation, encapsulation process can be carried out to foil gauge, dry with infrared lamp, control bonding surface temperature and be no more than 40oC, foil gauge is connected to by straingauge and computer carries out real time security can monitors, other bondings and test process are as embodiment 1.
embodiment 3
Adopt strain testing monitoring LiNi
1/3co
1/3mn
1/3o
2the normal temperature of flexible-packed battery and 80oC flatulence security performance, the distribution schematic diagram of foil gauge on square flexible-packed battery as shown in Figure 3, the fail safe of normal temperature and high temperature Φ 0.01 ~ 0.03mm nichrome aluminum alloy foil gauge square shaped flexible-packed battery is selected to monitor respectively, temperature-compensating is adopted during high temperature, slight scraping is carried out to increase the roughness on surface to bonded part, flexible package aluminum plastic film surface, by foil gauge secure bond at the centerand edge equivalent position of rectangular cell and two contact conductor places, natural drying 15 ~ 20h is cured, after the assay was approved foil gauge is connected to by straingauge and computer carries out real time security can monitors, other bondings and test process are as embodiment 1.
embodiment 4
Adopt strain testing monitoring Li
4ti
5o
12the flatulence security performance of box hat cylindrical battery, the distribution schematic diagram of foil gauge on cylindrical steel housing battery as shown in Figure 4, the fail safe of Aludirome foil gauge to 18650 cylindrical batteries is adopted to monitor, polished and swiped in stainless steel surfaces bonded part and increase the roughness on surface, by foil gauge secure bond the up/down bottom center of cylindrical battery, cylinder upper/in/lower and edge equivalent position, be connected to by straingauge by foil gauge and computer carries out real time security can monitor, other bondings and test process are as embodiment 1.
embodiment 5
Adopt the STRESS VARIATION of strain testing monitoring super capacitor, the distribution schematic diagram of foil gauge on cylindrical supercapacitor as shown in Figure 5, the fail safe of platinum-tungsten alloys foil gauge to cylindrical supercapacitor is adopted to monitor, the external packing of capacitor is peeled off, polishing is carried out to bonded part, aluminum shell tool surface and increases surface roughness to improve adhesion strength, by the up/down bottom center of foil gauge secure bond at cylindrical supercapacitor, cylinder upper/in/lower and edge equivalent position, foil gauge is connected to by straingauge and computer carries out real time security can monitors, other bondings and test process are as embodiment 1.
Claims (7)
1. the method for an on-line monitoring battery and capacitor safe performance, it is characterized in that: foil gauge is distributed in mesuring battary and capacitor surface assigned address by certain way, foil gauge is connected with straingauge, monitors its security performance in real time by the strain variation of monitoring battery and capacitor.
2. description according to claim 1, is characterized in that: described certain way refers to the foil gauge arrangement mode of applicable battery and capacitor shape, and the arrangement position of foil gauge and spacing meet tests and required precision.
3. description according to claim 1, is characterized in that: described distribution to refer to foil gauge by adhesives, at battery and capacitor surface, having enough adhesion strengths therebetween to ensure common eigenvector.
4. description according to claim 1, is characterized in that: described assigned address refers to the test point of the geometric center of battery and capacitor surface, edge equivalent position, stress situation complex area, high stress concentration zone and ask for something.
5. description according to claim 1, is characterized in that: described real-time monitoring refers to the strain variation of battery and capacitor to carry out in-service monitoring and control by straingauge.
6. description according to claim 1, is characterized in that: described straingauge refers to statical strain indicator, static-dynamic strainometer, dynamic strain indicator and high dynamic strain indicator.
7. description according to claim 3, is characterized in that: described adhesive refers to the sticking material of the tool of good insulating, and foil gauge lead-out wire and the insulation resistance between battery and capacitor are not less than 100M Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510025487.3A CN104600388B (en) | 2015-01-20 | 2015-01-20 | A method of on-line monitoring battery and capacitor safe performance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510025487.3A CN104600388B (en) | 2015-01-20 | 2015-01-20 | A method of on-line monitoring battery and capacitor safe performance |
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| CN104600388A true CN104600388A (en) | 2015-05-06 |
| CN104600388B CN104600388B (en) | 2018-10-12 |
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Cited By (12)
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| CN105067922A (en) * | 2015-08-04 | 2015-11-18 | 国家电网公司 | Capacitor state detection method and detection system |
| CN105161786A (en) * | 2015-05-11 | 2015-12-16 | 深圳天珑无线科技有限公司 | Electronic equipment, control method of electronic equipment and cell |
| CN105178209A (en) * | 2015-09-10 | 2015-12-23 | 厦门精图信息技术股份有限公司 | Novel guide board with safety monitored anytime |
| CN105222933A (en) * | 2015-09-22 | 2016-01-06 | 上海斐讯数据通信技术有限公司 | The stress monitoring method of a kind of electronic equipment and application thereof |
| CN105606641A (en) * | 2015-12-29 | 2016-05-25 | 河南惠强新能源材料科技股份有限公司 | Online real-time monitoring system and method for monitoring heat shrinkage rate of lithium battery diaphragm |
| CN106595914A (en) * | 2016-11-18 | 2017-04-26 | 常州普莱德新能源电池科技有限公司 | Method and device for determining cathode mix swelling degree by using strain gauges |
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Cited By (20)
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| CN113410508B (en) * | 2021-05-08 | 2022-09-13 | 华东理工大学 | Method for in-situ measurement of lithium ion battery pole piece strain |
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