Test in Battery Internal Resistance: Etke ej juon kein jerbal eo emman tata ñan etale ejmour in battery

Bwebwenato

Jeptomba 18, 2022

Test in resistance eo ilowaan ej letok tokjen eo emman tata ñan kōjparok battery ko. Ejjab aikuj in bōjrak, ejelok kein jerbal in jolok, im ej kadedelok juon etale in battery eo ilo jejjo wōt minit. Eoon in ej etale wāween eo ej kobaik an kajoor eo ilowaan ñan an battery eo rūttoļo̧k, im ewi wāween an meļeļe ko an bōbrae kōm̧m̧an bwe en wōr kōjparok eo ej kōtmene.

Ia eo Internal Resistance ej itok jen e: Meļeļe kin Physics

Ñan melele kin aorōk in test in internal resistance, juon ej aikuj in melele mokta ta eo internal resistance in battery eo ej lukkun. Ejjab juon wōt joñan ak ej juon koba in elōn mõttan ko jen kain jerbal ko reoktak jen dron.

Mokta ej ohmic resistance, barāinwōt naetan DC internal resistance, ej walok jen resistivity in electrode material ko, ionic conductivity an electrolyte eo, im contact resistance ilo electrode-current collector interfaces. Ohmic resistance ej uwaak ilo mõkaj tata — joñan voltage eo ej jino ñe ej jerbal ej itok jen ohmic resistance. Ej wōnmanlok jidik kin an rittolok ke kein jerbal ko an electrode rej rup im current collector ko rej rup.

Kein karuo ej electrochemical polarization resistance, jen kinetic resistance in redox reactions ilo electrode ko. Ñe rej jolok, men ko rej jerbal ilo electrode ko rej etal ilo oxidation-reduction reactions ko ewōr juon air activation energy barrier. Polarization resistance ej ejaak jidik kin jidik elikin an kar kōjerbal load im ej bed wot ilo an jab oktak. Ej wōnmanlok ilo an rittolok ke men ko rej jerbal rej jako im jikin eo ej jerbal ej diklok.

Kein kajilu ej ​​joñan an maroñ in jume, jen joñan an oktak ilo electrolyte eo iturin electrode eo. Ilo ien jolok, ion ko rej jerbal rej jako ilo electrode ko; elañe electrolyte mass transfer ejjab maroñ in dāpij wōt, joñan electrode eo ej oktak jen joñan eo elap, im kōmman an voltage wōtlo. Concentration polarization ej aorōk wot ilo joñan an lap an diwōjtok im ejjab lukkun aorōk ilo joñan an dik.

Kein kajilu ej ​​joñan an maroñ in bōbrae, ekoba weld joint ko ikõtan tab ko im plate ko, seal ko ikõtan battery cover ko im terminal ko, im external connection ko (bolt ko, busbar ko). Contact resistance ej lukkun bin ilo aolepen mour ak emaron in laplok ilo ien eo wōt ñe connection ko rej mōjno ak rup — eo ej lukkun wāween an internal resistance testing lo bōd in connection ko.

Meļeļe kin men kein emen ej aorōk kinke test in resistance eo ilowaan ewōr an oktak in joñan an oktak ñan ien ko reoktak an rūttolok. Ohmic resistance ej lukkun bin ñan an armij rūttolok; polarization resistance ñan mid-stage aging; concentration polarization ej aorōk wōt ilo joñan ko reutiej. Melel in ej bwe test in resistance eo ilowaan ej emman tata ñan an maroñ in loe an rūttolok ilo ien eo ej kab jino im ilo ien eo ej bed ilo ien eo edik, im ejjab lukkun jejjet ñan an diklok an maroñ ilo ien eo ej jemlokin.

Kōtaan eo ikõtan an maroñ in jume im rūttolok: Etke an maroñ in jume ej walok mokta jen an maroñ

Battery eo ej rūttolok ej kwalok an maroñ in jako im joñan an maroñ in bōbrae, ak men kein ruo rejjab wōnm̧aanlok ilo juon wōt ien. Ilo 60-70% in mour eo moktata, maroñ in jako ej lukkun mōkaj ilo ien eo ej kwalok an laplok. Ilo 30% eo eliktata in mour, maroñ ej mõkajlok ñan lal ilo ien eo ej lukkun utiej. Iien in ej aorōk eo an internal resistance testing einwot juon kein jerbal in kōjparok eo ej kōtmene.

Bōk juon 2V telecom battery eo ewōr an 10-15 yio in float-life design. Ilo 5-7 yio ko moktata, joñan maroñ eo emaron diklok jen 100% ñan 90%+ — ri jerbal in kōjparok ro rej maroñ in ba bwe battery eo ej emman wōt. Ak ilo ien eo wot, joñan an maroñ in jumae ilowaan emaron kar laplok ruo alen ak laplok jen joñan eo ilo jikin jerbal eo an 20 mΩ ñan 40-50 mΩ. Elañe ej walok wōt ñe joñan eo ej diklok (iumin 80% SOH), ien eo emman tata ñan bōk jikin emoj an jemlok — battery eo ej jerbal wōt ak emoj an diklok im emaron likjab ilo ien eo tok juon.

Juon kein karuo tokjen in test in resistance ej an maroñ in loe jab jimwe ko redik. Ilowaan juon wōt battery string, elañe juon cell ej kwalok elaplok jen 30% joñan an kajoor jen joñan eo an kumi eo — meñe joñan eo an ej bed wot ilo spec eo — ej aikuj in lale. Cell eo emaron wōr an jorrāān ilo kōmmane (weld eo ejjab emman) ak ej mōkaj an rūttolok (electrolyte depletion). Ilo an ejelok etale in joñan an jejjet, lale wōt joñan an kajoor string ko, kain oktak rot kein rejjab maroñ in loe — joñan joñan an kajoor ilo aolep cell ko, im kōmman bwe en diiklok jabdewōt oktak.

Wāween ko ñan māllejoñ in bōbrae: Jen Handheld ñan Online

Wāween ko ñan mālijjon̄ in bōbrae ko ilowaan remaron̄ in kōjenolo̧k kōn jekjek in mālijjon̄ ko im aikuj ko an jim̧we. Men eo epidodo tata ej meter in joñan an kajoor ilo pein: likit clip ko ñan terminal ko an battery eo, jibwe test button eo, riiti joñan eo. Men ko remman rej bwe epidodo, edik wōnan, im ejelok kein jerbal ko jet; men ko renana rej jerbal in juon wōt cell ilo juon ien, bōk melele ko ilo pein armij, im joñan an maroñ in bōk riit ko ñan clip contact resistance.

Kein karuo ej load-based internal resistance testing, ekoba AC injection im DC discharge methods. AC injection ej lelok juon current edik ilo juon frequency (1kHz) ñan battery eo im joñe joñan an AC voltage drop ñan an maroñ in bōk resistance. Emman ko: ejelok battery eo emol, ej lukkun online; jorrāān: ej joñe AC internal resistance, eo ej oktak jen DC internal resistance. DC discharge ej kōjerbal juon DC load eo edik (ekkā an joñoul amps ñan 100ms ñan 1 second) im ej joñe oktak in voltage eo mokta im elikin load ñan an maroñ in lale DC internal resistance. Men ko remman: ej joñan DC eo emol ilowaan; jorrāān: ej kōjerbal juon eddo, eo ewōr an jorrāān ilo jerbal eo ilo online.

Kein kajilu ej ​​online internal resistance monitoring systems: sensor ko rej bed ilo kajjojo cell, data ko rej jilkinlok ikijen bus ñan juon monitoring host. Men ko remman: 24/7 lale aolep ien ippāñ rekoot im etale ko rej make walok; men ko renana: elap wōnan im bin in likit, emman wot ñan jerbal ko reutiej tata (data centers, rail transit).

PK59C im PK59D rej bed ikōtaan kein karuo im kein kajilu — kein jerbal ko rej jibwe ilo pein armij rej kajerbal DC discharge measurement, lelok jimwe im tiljek eo elaplok jen AC-injection handheld meter ko. Ñan elaptata telecom base station im UPS maintenance scenaries ko, men in ej jutak kin joñan wōnan eo emman tata.

Ewi wawein kōjerbal melele ko jen internal resistance ñan Predictive Maintenance

Aorōk eo emol an internal resistance testing ejjab bed ilo juon wōt joñan ak ilo bōk melele ko ilo ien eo elap im etale wāween ko. Juon wōt riit ej kwalok ñan yuk jekjek eo kiõ; juon wāween eo ej wōnm̧aanļo̧k wōt ej jiron̄ eok ia eo battery eo ej etal ie ļo̧k.

Jerbal eo elaptata ej kalek juon rekoot in ejmour in battery. Elikin kajjojo test, rekoote resistance eo ilowaan, voltage, raan in test eo, im joñan bwil im molo eo an kajjojo cell. Test ko rej aikuj in walok kajjojo quarter, kajjojo allōñ ñan jikin telecom ko raorōk. Data ko rej aikuj in kōmmane einwot time-series curves ñan kajjojo cell. Juon cell eo emourur ej kwalok juon an wōnmanlok jidik kin jidik, im ejjab oktak. Juon cell eo ej mōkaj an maroñ in jume ilo juon ien edik — meñe joñan eo ej dik wōt — ej kwalok juon men eo ejjab jimwe ej aikuj bar etale.

Kōmman 预警 joñan ko ej bun̄tōn eo tok juon. Threshold ko rejjab maroñ in juon wōt joñan — kain battery ko reoktak, ri kōmmani, im jerbal in kalōk ko ewōr aer joñan resistance ko reoktak im joñan oktak ko. Juon wewein eo emman: kajerbal joñan battery eo ekãl einwõt joñan eo, likit ruo joñan kakkõl ko — WARNING ilo 1.5× joñan, ACTION ilo 2× joñan. Elañe ejelok melele ko jen jikin jerbal eo, kajerbal joñan eo an juon battery ekãl einwõt juõn reference, ak likit joñan kakkõl eo ilo 1.3× joñan eo ediktata ilo ejja kumi eo wõt.

Etale ko relaplok rej kōmman bwe en maroñ in wor kōtmene kin mour eo ej bed wot. Ilo an kōmman resistance-versus-time curve, juon emaron in etale ien eo resistance ej tõbar joñan an likjab, im kwalok joñan an maroñ in jerbal. Wãwen in emoj an jerbal ilo battery bank ko relap ilo telecom im data center industry ko, ak ejjab lukkun jejjet ilo maintenance team ko redik. Ilo an data in test ko kobalok im kein jerbal in etale ko rej emmanlok, wewein in kōtmene in enaj jidik kin jidik erom joñan eo an industry eo.

Āliktata, melele ko ikijen jumae ko ilowaan rej aikuj in kobalok ibben melele ko jet. Wōnm̧aanļo̧k in m̧ōjņo̧ ej juon menin kakōļļe in rūttoļo̧k, bōtaab ejjab men eo wōt. joñan bwil im molo, bwebwenato in float voltage, charge-discharge cycle ko, im string consistency data, ñe rej kobaiki, rej kōmman bebe ko rejimwe kin kōjparok. N̄an waanjon̄ak, juon cell eo ewōr an resistance eutiej me ekar barāinwōt ļap an charge emaron̄ in juon apan̄ in charge management jān juon jorrāān in battery — bōk jikin enaaj kar joļo̧k juon kein jerbal eo emaron̄ in kōjerbale wōt.

Naan in kakapilōk ko rejejjet: Kobaik Internal Resistance Testing ilo Maintenance Procedures

Ñan tiim in kōjparok ko, kobaik internal resistance testing ilo jerbal ko rekāāl ejjab aikuj bar jet kein jerbal ko — elañe jabdewōt model jen PK59A ñan PK59D emoj an wōr, maroñ in internal resistance testing ej bed. Ta eo ej aikuj ej ejaak jerbal in test ko im system in lale melele ko.

Wāween mālijjon eo emman: joñe joñan an kajoor ilowaan battery eo ekãl; test jen ien ñan ien ilo ien jerbal (quarterly, monthly ñan jikin ko raorōk); joñe kajjojo cell ko kajjojo innem joñan eo; rekoote joñan an kajoor, joñan an kajoor, im joñan bwil im molo ñan kajjojo test; flag cell ko ewōr aer resistance eo ejjab jimwe ñan follow-up; kōmmane juon report in ejmour in battery ilo kajjojo quarter.

Ñan lale melele ko, kajerbal Excel ñan joñan ko redik (joñoul ñan buki cell ko) ippāñ juon wāween tebōl eo emman im kōkāāl. Ñan joñan ko redik (bukwi ñan taujin), lemnok kin software in kejbãrok battery ko. Ñan joñan ko relap (taujin ñan joñoul taujin), juon jukjuk in lale jerbal ko rej bed ilo juon jikin eo ej kobalok ibben host ko rej lale im SCADA ej ekkar.

Ñan ri wia ro rej bed ilo ien kālet eo, likit moktata kein jerbal ko rej jibañ internal resistance testing. Ke juon internal resistance meter ej laplok wōnan jen juon voltmeter eo epidodo, tokjen eo ej laplok ñe ej joñe ņae jorren ko ilo ien kakkije eo ej walok jen an battery eo jako. Juon wōt battery in telecom base station ej jorrāān emaron kōmman joñoul thousand ñan buki thousand in jorren ko ilo business interruption, ilo ien eo juon internal resistance tester ej wōr wōt jejjo thousand. View the Battery Test Instruments Collection