{"id":2909,"date":"2024-05-29T08:15:00","date_gmt":"2024-05-29T08:15:00","guid":{"rendered":"http:\/\/www.kmdpower.com\/?p=2909"},"modified":"2024-10-18T08:24:49","modified_gmt":"2024-10-18T08:24:49","slug":"degradation-analysis-of-commercial-lithium-ion-batteries-in-long-term-storage","status":"publish","type":"post","link":"https:\/\/www.kmdpower.com\/sk\/news\/degradation-analysis-of-commercial-lithium-ion-batteries-in-long-term-storage\/","title":{"rendered":"Anal\u00fdza degrad\u00e1cie komer\u010dn\u00fdch l\u00edtium-i\u00f3nov\u00fdch bat\u00e9ri\u00ed pri dlhodobom skladovan\u00ed"},"content":{"rendered":"
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Anal\u00fdza degrad\u00e1cie komer\u010dn\u00fdch l\u00edtium-i\u00f3nov\u00fdch bat\u00e9ri\u00ed pri dlhodobom skladovan\u00ed. L\u00edtium-i\u00f3nov\u00e9 bat\u00e9rie sa stali nepostr\u00e1date\u013en\u00fdmi v r\u00f4znych priemyseln\u00fdch odvetviach v\u010faka svojej vysokej energetickej hustote a \u00fa\u010dinnosti. Ich v\u00fdkon sa v\u0161ak \u010dasom zhor\u0161uje, najm\u00e4 po\u010das dlh\u0161ieho skladovania. Pochopenie mechanizmov a faktorov ovplyv\u0148uj\u00facich t\u00fato degrad\u00e1ciu je k\u013e\u00fa\u010dov\u00e9 pre optimaliz\u00e1ciu \u017eivotnosti bat\u00e9ri\u00ed a maximaliz\u00e1ciu ich \u00fa\u010dinnosti. Tento \u010dl\u00e1nok sa zaober\u00e1 anal\u00fdzou degrad\u00e1cie komer\u010dn\u00fdch l\u00edtium-i\u00f3nov\u00fdch bat\u00e9ri\u00ed pri dlhodobom skladovan\u00ed a pon\u00faka pou\u017eite\u013en\u00e9 strat\u00e9gie na zmiernenie poklesu v\u00fdkonu a pred\u013a\u017eenie \u017eivotnosti bat\u00e9rie.<\/p>

\u00a0<\/p>

K\u013e\u00fa\u010dov\u00e9 mechanizmy degrad\u00e1cie:<\/h2>

Samovo\u013en\u00e9 vyb\u00edjanie<\/h3>

Vn\u00fatorn\u00e9 chemick\u00e9 reakcie v l\u00edtium-i\u00f3nov\u00fdch bat\u00e9ri\u00e1ch sp\u00f4sobuj\u00fa postupn\u00fa stratu kapacity, aj ke\u010f je bat\u00e9ria ne\u010dinn\u00e1. Tento proces samovyb\u00edjania, hoci je zvy\u010dajne pomal\u00fd, m\u00f4\u017ee by\u0165 ur\u00fdchlen\u00fd zv\u00fd\u0161en\u00fdmi teplotami pri skladovan\u00ed. Hlavnou pr\u00ed\u010dinou samovyb\u00edjania s\u00fa ved\u013eaj\u0161ie reakcie vyvolan\u00e9 ne\u010distotami v elektrolyte a drobn\u00fdmi defektmi v elektr\u00f3dov\u00fdch materi\u00e1loch. Zatia\u013e \u010do pri izbovej teplote prebiehaj\u00fa tieto reakcie pomaly, ich r\u00fdchlos\u0165 sa zdvojn\u00e1sobuje s ka\u017ed\u00fdm zv\u00fd\u0161en\u00edm teploty o 10 \u00b0C. Preto skladovanie bat\u00e9ri\u00ed pri teplot\u00e1ch vy\u0161\u0161\u00edch, ako je odpor\u00fa\u010dan\u00e9, m\u00f4\u017ee v\u00fdrazne zv\u00fd\u0161i\u0165 r\u00fdchlos\u0165 samovyb\u00edjania, \u010do vedie k podstatn\u00e9mu zn\u00ed\u017eeniu kapacity pred pou\u017eit\u00edm.<\/p>

\u00a0Reakcie elektr\u00f3d<\/span><\/p>

Ved\u013eaj\u0161ie reakcie medzi elektrolytom a elektr\u00f3dami ved\u00fa k tvorbe vrstvy rozhrania tuh\u00e9ho elektrolytu (SEI) a degrad\u00e1cii elektr\u00f3dov\u00fdch materi\u00e1lov. Vrstva SEI je nevyhnutn\u00e1 pre norm\u00e1lnu prev\u00e1dzku bat\u00e9rie, ale pri vysok\u00fdch teplot\u00e1ch sa na\u010falej zahus\u0165uje, spotreb\u00fava i\u00f3ny l\u00edtia z elektrolytu a zvy\u0161uje vn\u00fatorn\u00fd odpor bat\u00e9rie, \u010d\u00edm zni\u017euje jej kapacitu. Okrem toho vysok\u00e9 teploty m\u00f4\u017eu destabilizova\u0165 \u0161trukt\u00faru elektr\u00f3dov\u00e9ho materi\u00e1lu, sp\u00f4sobi\u0165 trhliny a rozklad, \u010do \u010falej zni\u017euje \u00fa\u010dinnos\u0165 a \u017eivotnos\u0165 bat\u00e9rie.<\/p>

\u00a0Strata l\u00edtia<\/span><\/p>

Po\u010das cyklov nab\u00edjania a vyb\u00edjania sa niektor\u00e9 i\u00f3ny l\u00edtia natrvalo zachytia v mrie\u017ekovej \u0161trukt\u00fare elektr\u00f3dov\u00e9ho materi\u00e1lu, \u010d\u00edm sa stan\u00fa nedostupn\u00fdmi pre \u010fal\u0161ie reakcie. T\u00e1to strata l\u00edtia sa zhor\u0161uje pri vysok\u00fdch teplot\u00e1ch skladovania, preto\u017ee vysok\u00e9 teploty podporuj\u00fa, aby sa viac i\u00f3nov l\u00edtia nen\u00e1vratne usadilo v defektoch mrie\u017eky. V d\u00f4sledku toho sa zni\u017euje po\u010det dostupn\u00fdch i\u00f3nov l\u00edtia, \u010do vedie k \u00fabytku kapacity a krat\u0161ej \u017eivotnosti cyklu.<\/p>

\u00a0<\/p>

Faktory ovplyv\u0148uj\u00face r\u00fdchlos\u0165 degrad\u00e1cie<\/h2>

Teplota skladovania<\/h3>

Teplota je hlavn\u00fdm faktorom, ktor\u00fd ovplyv\u0148uje degrad\u00e1ciu bat\u00e9rie. Bat\u00e9rie by sa mali skladova\u0165 v chladnom a suchom prostred\u00ed, ide\u00e1lne v rozmedz\u00ed 15 \u00b0C a\u017e 25 \u00b0C, aby sa spomalil proces degrad\u00e1cie. Vysok\u00e9 teploty ur\u00fdch\u013euj\u00fa r\u00fdchlos\u0165 chemick\u00fdch reakci\u00ed, zvy\u0161uj\u00fa samovyb\u00edjanie a tvorbu vrstvy SEI, \u010d\u00edm ur\u00fdch\u013euj\u00fa starnutie bat\u00e9rie.<\/p>

\u00a0Stav nabitia (SOC)<\/span><\/p>

Udr\u017eiavanie \u010diasto\u010dnej hodnoty SOC (pribli\u017ene 30-50%) po\u010das skladovania minimalizuje nam\u00e1hanie elektr\u00f3d a zni\u017euje mieru samovyb\u00edjania, \u010d\u00edm sa predl\u017euje \u017eivotnos\u0165 bat\u00e9rie. Vysok\u00e9 aj n\u00edzke \u00farovne SOC zvy\u0161uj\u00fa nam\u00e1hanie materi\u00e1lu elektr\u00f3dy, \u010do vedie k \u0161truktur\u00e1lnym zmen\u00e1m a v\u00e4\u010d\u0161iemu po\u010dtu ved\u013eaj\u0161\u00edch reakci\u00ed. \u010ciasto\u010dn\u00e1 hodnota SOC vyrovn\u00e1va nap\u00e4tie a reak\u010dn\u00fa aktivitu, \u010d\u00edm spoma\u013euje r\u00fdchlos\u0165 degrad\u00e1cie.<\/p>

\u00a0H\u013abka vyp\u00fa\u0161\u0165ania (DOD)<\/span><\/p>

Bat\u00e9rie vystaven\u00e9 hlbok\u00e9mu vybitiu (vysok\u00fd DOD) degraduj\u00fa r\u00fdchlej\u0161ie v porovnan\u00ed s bat\u00e9riami vystaven\u00fdmi plytk\u00e9mu vybitiu. Hlbok\u00e9 v\u00fdboje sp\u00f4sobuj\u00fa v\u00fdraznej\u0161ie \u0161truktur\u00e1lne zmeny v elektr\u00f3dov\u00fdch materi\u00e1loch, vytv\u00e1raj\u00fa viac trhl\u00edn a ved\u013eaj\u0161\u00edch reak\u010dn\u00fdch produktov, \u010d\u00edm sa zvy\u0161uje r\u00fdchlos\u0165 degrad\u00e1cie. Vyh\u00fdbanie sa \u00fapln\u00e9mu vybitiu bat\u00e9ri\u00ed po\u010das skladovania pom\u00e1ha zmierni\u0165 tento \u00fa\u010dinok, \u010d\u00edm sa predl\u017euje ich \u017eivotnos\u0165.<\/p>

\u00a0Kalend\u00e1rny vek<\/span><\/p>

Bat\u00e9rie \u010dasom prirodzene degraduj\u00fa v d\u00f4sledku prirodzen\u00fdch chemick\u00fdch a fyzik\u00e1lnych procesov. Aj pri optim\u00e1lnych podmienkach skladovania sa chemick\u00e9 zlo\u017eky bat\u00e9rie postupne rozkladaj\u00fa a zlyh\u00e1vaj\u00fa. Spr\u00e1vne skladovacie postupy m\u00f4\u017eu tento proces starnutia spomali\u0165, ale nem\u00f4\u017eu mu \u00faplne zabr\u00e1ni\u0165.<\/p>

\u00a0<\/p>

Techniky anal\u00fdzy degrad\u00e1cie:<\/h2>

Meranie zaniknutej kapacity<\/h3>

Pravideln\u00e9 meranie vyb\u00edjacej kapacity bat\u00e9rie poskytuje jednoduch\u00fa met\u00f3du na sledovanie jej degrad\u00e1cie v priebehu \u010dasu. Porovn\u00e1vanie kapacity bat\u00e9rie v r\u00f4znych \u010dasov\u00fdch obdobiach umo\u017e\u0148uje pos\u00fadi\u0165 r\u00fdchlos\u0165 a rozsah jej degrad\u00e1cie, \u010do umo\u017e\u0148uje v\u010dasn\u00fa \u00fadr\u017ebu.<\/p>

\u00a0Elektrochemick\u00e1 impedan\u010dn\u00e1 spektroskopia (EIS)<\/span><\/p>

T\u00e1to technika analyzuje vn\u00fatorn\u00fd odpor bat\u00e9rie a poskytuje podrobn\u00fd preh\u013ead o zmen\u00e1ch vlastnost\u00ed elektr\u00f3d a elektrolytu. EIS dok\u00e1\u017ee odhali\u0165 zmeny vn\u00fatornej impedancie bat\u00e9rie, \u010do pom\u00e1ha identifikova\u0165 \u0161pecifick\u00e9 pr\u00ed\u010diny degrad\u00e1cie, ako je napr\u00edklad zhrubnutie vrstvy SEI alebo zhor\u0161enie stavu elektrolytu.<\/p>

\u00a0Anal\u00fdza post mortem<\/span><\/p>

Rozobratie znehodnotenej bat\u00e9rie a anal\u00fdza elektr\u00f3d a elektrolytu pomocou met\u00f3d, ako je r\u00f6ntgenov\u00e1 difrakcia (XRD) a skenovacia elektr\u00f3nov\u00e1 mikroskopia (SEM), m\u00f4\u017ee odhali\u0165 fyzik\u00e1lne a chemick\u00e9 zmeny, ku ktor\u00fdm doch\u00e1dza po\u010das skladovania. Anal\u00fdza po smrti poskytuje podrobn\u00e9 inform\u00e1cie o \u0161truktur\u00e1lnych zmen\u00e1ch a zmen\u00e1ch zlo\u017eenia v bat\u00e9rii, \u010do pom\u00e1ha pochopi\u0165 mechanizmy degrad\u00e1cie a zlep\u0161i\u0165 n\u00e1vrh bat\u00e9rie a strat\u00e9gie \u00fadr\u017eby.<\/p>

\u00a0<\/p>

Strat\u00e9gie zmier\u0148ovania<\/h2>

Chladn\u00e9 skladovanie<\/h3>

Akumul\u00e1tory skladujte v chladnom, kontrolovanom prostred\u00ed, aby ste minimalizovali samovyb\u00edjanie a in\u00e9 degrada\u010dn\u00e9 mechanizmy z\u00e1visl\u00e9 od teploty. V ide\u00e1lnom pr\u00edpade udr\u017eiavajte teplotu v rozmedz\u00ed od 15 \u00b0C do 25 \u00b0C. Pou\u017e\u00edvanie \u0161pecializovan\u00fdch chladiacich zariaden\u00ed a syst\u00e9mov kontroly prostredia m\u00f4\u017ee v\u00fdrazne spomali\u0165 proces starnutia bat\u00e9rie.<\/p>

Skladovanie \u010diasto\u010dn\u00e9ho n\u00e1boja<\/h3>

Po\u010das skladovania udr\u017eiavajte \u010diasto\u010dn\u00fa hodnotu SOC (pribli\u017ene 30-50%), aby ste zn\u00ed\u017eili nam\u00e1hanie elektr\u00f3d a spomalili ich degrad\u00e1ciu. To si vy\u017eaduje nastavenie vhodn\u00fdch strat\u00e9gi\u00ed nab\u00edjania v syst\u00e9me riadenia bat\u00e9rie, aby sa zabezpe\u010dilo, \u017ee bat\u00e9ria zostane v optim\u00e1lnom rozsahu SOC.<\/p>

Pravideln\u00e9 monitorovanie<\/h3>

Pravidelne monitorujte kapacitu a nap\u00e4tie bat\u00e9rie, aby ste zistili trendy degrad\u00e1cie. Na z\u00e1klade t\u00fdchto pozorovan\u00ed vykonajte pod\u013ea potreby n\u00e1pravn\u00e9 opatrenia. Pravideln\u00e9 monitorovanie m\u00f4\u017ee tie\u017e poskytn\u00fa\u0165 v\u010dasn\u00e9 varovanie pred potenci\u00e1lnymi probl\u00e9mami, \u010d\u00edm sa zabr\u00e1ni n\u00e1hlemu zlyhaniu bat\u00e9rie po\u010das pou\u017e\u00edvania.<\/p>

Syst\u00e9my riadenia bat\u00e9ri\u00ed (BMS)<\/h3>

Vyu\u017e\u00edvajte BMS na monitorovanie stavu bat\u00e9rie, riadenie cyklov nab\u00edjania a vyb\u00edjania a implement\u00e1ciu funkci\u00ed, ako je vyva\u017eovanie \u010dl\u00e1nkov a regul\u00e1cia teploty po\u010das skladovania. BMS dok\u00e1\u017ee zisti\u0165 stav bat\u00e9rie v re\u00e1lnom \u010dase a automaticky upravi\u0165 prev\u00e1dzkov\u00e9 parametre s cie\u013eom pred\u013a\u017ei\u0165 \u017eivotnos\u0165 bat\u00e9rie a zv\u00fd\u0161i\u0165 bezpe\u010dnos\u0165.<\/p>

\u00a0<\/p>

Z\u00e1ver<\/h2>

Komplexn\u00fdm pochopen\u00edm mechanizmov degrad\u00e1cie, ovplyv\u0148uj\u00facich faktorov a zaveden\u00edm \u00fa\u010dinn\u00fdch strat\u00e9gi\u00ed na zmiernenie n\u00e1sledkov m\u00f4\u017eete v\u00fdrazne zlep\u0161i\u0165 riadenie dlhodob\u00e9ho skladovania komer\u010dn\u00fdch l\u00edtium-i\u00f3nov\u00fdch bat\u00e9ri\u00ed. Tento pr\u00edstup umo\u017e\u0148uje optim\u00e1lne vyu\u017eitie bat\u00e9ri\u00ed a predl\u017euje ich celkov\u00fa \u017eivotnos\u0165, \u010d\u00edm zabezpe\u010duje lep\u0161\u00ed v\u00fdkon a n\u00e1kladov\u00fa efekt\u00edvnos\u0165 v priemyseln\u00fdch aplik\u00e1ci\u00e1ch. Ak chcete z\u00edska\u0165 pokro\u010dilej\u0161ie rie\u0161enia na skladovanie energie, zv\u00e1\u017ete\u00a0215 kWh Komer\u010dn\u00fd a priemyseln\u00fd syst\u00e9m skladovania energie<\/a>\u00a0pod\u013ea\u00a0Kamada Power<\/a><\/strong>.<\/p>

\u00a0<\/p>

Kontaktujte spolo\u010dnos\u0165 Kamada Power<\/h2>

Z\u00edskajte\u00a0Komer\u010dn\u00e9 a priemyseln\u00e9 syst\u00e9my skladovania energie na mieru<\/a><\/strong>\u00a0, kliknite na tla\u010didlo\u00a0Kontaktujte n\u00e1s Kamada Power<\/a><\/strong><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Anal\u00fdza degrad\u00e1cie komer\u010dn\u00fdch l\u00edtium-i\u00f3nov\u00fdch bat\u00e9ri\u00ed pri dlhodobom skladovan\u00ed. L\u00edtium-i\u00f3nov\u00e9 bat\u00e9rie sa stali nepostr\u00e1date\u013en\u00fdmi v r\u00f4znych priemyseln\u00fdch odvetviach v\u010faka svojej vysokej energetickej hustote a \u00fa\u010dinnosti. Ich v\u00fdkon sa v\u0161ak \u010dasom zhor\u0161uje, najm\u00e4 po\u010das dlh\u0161ieho skladovania. Pochopenie mechanizmov a faktorov ovplyv\u0148uj\u00facich t\u00fato degrad\u00e1ciu je k\u013e\u00fa\u010dov\u00e9 pre optimaliz\u00e1ciu \u017eivotnosti bat\u00e9ri\u00ed a maximaliz\u00e1ciu ich \u00fa\u010dinnosti. Tento...<\/p>","protected":false},"author":1,"featured_media":949,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rank_math_lock_modified_date":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[26],"tags":[],"class_list":["post-2909","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-product-news"],"_links":{"self":[{"href":"https:\/\/www.kmdpower.com\/sk\/wp-json\/wp\/v2\/posts\/2909","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kmdpower.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kmdpower.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kmdpower.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kmdpower.com\/sk\/wp-json\/wp\/v2\/comments?post=2909"}],"version-history":[{"count":7,"href":"https:\/\/www.kmdpower.com\/sk\/wp-json\/wp\/v2\/posts\/2909\/revisions"}],"predecessor-version":[{"id":2921,"href":"https:\/\/www.kmdpower.com\/sk\/wp-json\/wp\/v2\/posts\/2909\/revisions\/2921"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kmdpower.com\/sk\/wp-json\/wp\/v2\/media\/949"}],"wp:attachment":[{"href":"https:\/\/www.kmdpower.com\/sk\/wp-json\/wp\/v2\/media?parent=2909"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kmdpower.com\/sk\/wp-json\/wp\/v2\/categories?post=2909"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kmdpower.com\/sk\/wp-json\/wp\/v2\/tags?post=2909"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}