Lithium Battery Temperature Range: Malire Ogwiritsira Ntchito ndi Chitetezo

Mabatire a lithiamu amayendetsa chilichonse kuyambira mafoni mpakamakina osungira mphamvu zotengera mphamvu-koma kagwiridwe kawo kakudalira mtundu umodzi womwe magulu ambiri amapeputsa: kutentha. Kaya mukutumiza BESS m'chipululu cha Arizona kapena malo ozizira-ozizira kumpoto kwa Minnesota, kupeza envelopu yotentha molakwika kumawononga ndalama zenizeni ndipo kumabweretsa ngozi.

Bukhuli lili ndi malire a kutentha kwa ntchito, kulipiritsa, kusunga, ndi kutumiza mabatire a lithiamu pansi-zimene zikuchitika padziko lonse lapansi. Cholinga chake ndi cha lithiamu iron phosphate (LiFePO4) chemistry, yomwe imayang'anira malonda ndi mafakitale ogulitsa mphamvu pazifukwa zomwe zidzamveka bwino.

Kodi Kutentha Kotetezedwa Kwa Mabatire a Lithium Ndi Chiyani?

Mabatire a Lithium-ion amayenda bwino kwambiri mkati mwa zenera lomwe lasinthidwa. Tulukani ndipo sikuti mukungotaya mphamvu-mukuyika pachiwopsezo cha kuwonongeka kwa ma cell, kufupikitsa moyo wantchito, ndipo zikavuta kwambiri, kutha kwa kutentha.

Mgwirizano pakati pa opanga ndi mabungwe oyesera-kuphatikiza data yofalitsidwa ndi opanga ma cell a Tier 1 LiFePO4 monga CATL ndi BYD-zikutheka motere. Kuti agwire bwino ntchito, mabatire a lithiamu ayenera kugwira ntchito pakati pa 15 digiri ndi 35 digiri (59 digiri F mpaka 95 digiri F). Kulipira kuyenera kuchitika pakati pa digirii 0 ndi 45 digiri (32 digiri F mpaka 113 digiri F). Posungira-kwanthawi yaitali, mulingo woyenera ndi -20 digiri mpaka 25 digiri (-4 digiri F mpaka 77 digiri F), makamaka pa 30% mpaka 50% yolipirira. Kutentha kopitilira muyeso kumakhala pafupifupi madigiri 60 (140 degrees F), kupitilira pomwe kuwonongeka kosasinthika ndi ziwopsezo zazikulu zachitetezo zimakula kwambiri.

Chifukwa LiFePO4 makamaka? Kuthamanga kwake kumafikira madigiri 270 (518 digiri F), pa data yochokera kuselo-kuyesa nkhanza kochitidwa ndi UL ndi ma lab odziyimira pawokha. Yerekezerani izi ndi pafupifupi 150 digiri ku 210 digiri ya nickel manganese cobalt (NMC) makemistri. Umenewo si mpata wawung'ono-ndipo kusiyana pakati pa chemistry yomwe imalekerera zolakwika ndi yomwe imawalanga. Ndicho chifukwa chachikulu LiFePO4 tsopano ikulamulira pafupifupi 75% ya malo osungirako zinthu padziko lonse lapansi, malinga ndi BloombergNEF's 2024 msika wosungira mphamvu. Mphepete mwachilengedwe yamafuta ndichifukwa chake LiFePO4 imalamulirakusungirako mphamvu kwa batire yapamwambamsika wa ntchito zamalonda ndi mafakitale.

Momwe Kuzizira Kumakhudzira Magwiridwe A Battery Lithium

Kuzizira kumachepetsa chirichonse pa msinkhu wa selo. Pansi pa digiri ya 15, kukana kwamkati kumakwera, kutsika kwamphamvu komwe kulipo, ndikutulutsa mphamvu kumatsika. Pa 0 digiri, yembekezerani pafupifupi 80% ya mphamvu zovoteledwa. Pa -20 digiri , mutha kuwona 60% kapena kuchepera. Izi si ziwerengero zongoyerekeza - zimayenderana ndi ma curve otulutsidwa kuchokera kwa opanga ma cell akuluakulu.

Koma choopsa chenicheni sichochepa. Ikulipira.

Mukakankhira panopa mu batire ya lithiamu pansi pa 0 digiri (32 digiri F), zitsulo zachitsulo lifiyamu zimatha kuyika pamwamba pa anode m'malo molumikizana ndi ma graphite momwe zimayenera kuchitira. Uku ndi plating ya lithiamu, ndipo ndiyokhazikika. Kulipiritsa kumodzi -kuzizira kozizira kumatha kuchititsa kuti munthu asamagwire ntchito bwino moti palibe chimene chingasinthe. Zimapanganso njira zazifupi zamkati-zozungulira. Izi sizingochitika pang'onopang'ono{8}}ndikulakwitsa nthawi imodzi{9}}kumakhala ndi zotsatira zokhalitsa.

Chitsanzo cha munda:Kumayambiriro kwa chaka cha 2023, malo opangira zinthu m'chigawo chapakati cha Wisconsin adabweretsa 500 kWh LiFePO4 BESS pa intaneti kuti achepetse kufunika kwake. Kuyika koyambirira kumagwiritsa ntchito kutchinjiriza koyambirira popanda makina otenthetsera. M'nyengo yozizira yoyamba, a BMS adayesa kangapo kuti azitha kutentha ma cell apakati pa -5 digirii mpaka -2 digirii isanakwane protective cutoffs. Pofika m'chilimwe chotsatira, makinawa anali atataya pafupifupi 8% ya mphamvu zake zotha kugwiritsidwa ntchito-kuposa momwe amawonongera. Kubwezeretsanso kokhala ndi zinthu zotenthetsera kale ndi firmware yosinthidwa ya BMS kunakhazikitsa dongosolo, koma mphamvu yotayikayo sinapezekenso. Wophatikizira yemwe adagawana nawo nkhaniyi tsopano akuwonetsa kutenthetsa kwachangu pantchito iliyonse yanyengo yozizira, mosasamala kanthu za kukakamizidwa kwa bajeti.

Posungira mphamvu kumadera ozizira, kuwongolera kutentha sikoyenera-koma kumangochitika mwadongosolo. Zamakononduna zakunja BESS zothetseraYang'anirani izi ndi kutentha kwa batire kophatikizika komwe kumabweretsa ma cell pamwamba pa chiwongolero chotetezedwa musanavomereze zapano. Mapulatifomu apamwamba a BMS amayang'anira kutentha kwa ma cell munthawi yeniyeni ndipo amakana kuyitanitsa malamulo ngati zinthu sizili bwino.

Njira zothandiza zoziziritsira-malo otumizira nyengo: kukhazikitsa makina m'malo otchingidwa kapena otsekeredwa, gwiritsani ntchito BMS-kutentha koyambika-isanayambike, malo otchingidwa ndi malo kuti muzindikire kuchulukira kwa dzuwa masana, ndi kutchula m'malo omwe adavotera kusinthasintha kwa kutentha kozungulira. Izi sizabwino-kukhala-kukhala nazozothandiza-ntchito zosungira mphamvu zamalondam'chigawo chakumpoto cha US kapena Canada. Ndiwo maziko.

Kodi Chimachitika N'chiyani Mabatire A Lithium Akatentha Kwambiri?

Kuzizira kumapweteka kwakanthawi. Kutentha kumawononga nthawi zonse.

Kutentha kopitilira madigiri 35 kumathandizira kuwonongeka kwa ma electrolyte, kumathandizira kuti SEI (solid-electrolyte interphase) ikule, ndi kuwononga zinthu za elekitirodi. Kalendala ya ukalamba wa pulogalamu ya Sandia National Laboratories Energy Storage Testing imasonyeza kuti ma lithiamu{3}}maselo a ayoni amene amasungidwa pa madigiri 55 kwa miyezi sikisi akhoza kutaya pafupifupi 10% ya mphamvu zotha kugwiritsidwa ntchito, pamene maselo osungidwa pa 15 digiri amasunga pafupifupi 95% pa chaka chathunthu. Kusiyanaku ndikodabwitsa-komanso kukuchulukirachulukira.

Lamulo logwiritsidwa ntchito ndi mainjiniya ambiri a batri: kukwera kulikonse kwa madigiri 10 pakutentha kosasunthika kumachulukitsa kuchuluka kwa kuwonongeka kwa mankhwala. Kwa BESS yamalonda yomwe ikuyembekezeka kubweretsa ndalama zokwana 6,000 kapena kupitilira apo-zikutha pazaka 15 za moyo wantchito, izi siziri zongopeka. Dongosolo lomwe likuyenda nthawi zonse pa digiri ya 45 m'malo mwa digirii 25 litha kutaya zaka zantchito zothandiza. Zaka.

Chitsanzo cha munda:Pulojekiti yosungiramo solar-kuphatikiza-kummwera kwa Arizona-kachitidwe ka 2 MWh LiFePO4 kamene kanakhazikitsidwa mu 2021-poyamba inkadalira kuziziritsa kwa mpweya mokakamizidwa kuti "average" azitha kukhala pamalo ozungulira. M'nyengo yotentha iwiri yoyambirira, kutentha kwakunja kumapitirira madigiri 45, kutentha kwa mkati kumadutsa madigiri 40 panthawi ya masana. Pambuyo pa miyezi 18, wogwiritsa ntchitoyo adalemba kutsika kwamphamvu kwa 12%, zomwe zikuyembekezeka kunja kwa chitsimikizo. Dongosololi lidasinthidwanso ndi loop yozizirira yamadzimadzi, ndipo kuwonongeka kunabwereranso kumitengo yabwinobwino. Wogwiritsa ntchitoyo akuti kuwonongeka koyambirira kumawononga pafupifupi $180,000 pamtengo wotayika wamagetsi panthawi yonse yomwe akuyembekezeredwa. Monga momwe akatswiri awo amanenera: "Tidasunga $ 40K pa kuziziritsa kutsogolo ndipo zidatiwononga kanayi."

Kuphatikiza pa kukalamba kofulumira, kutentha kwakukulu kumabweretsa zoopsa zachitetezo. Pamene kutentha kwa batri mkati kumadutsa madigiri a 60, zigawo za cell zimayamba kuwonongeka m'njira zomwe zimapangitsa kutentha kwina. Ngati kutentha kumaposa mphamvu ya selo yotha kukhetsa, zotsatira zake zimakhala kuti kutentha kumatha-kudzipangitsa nokha-kudzilimbitsa nokha zomwe zingayambitse mpweya wapoizoni, moto, kapena kuphulika. Mumapaketi ambiri-mabatire a ma cell, mphamvu yothawira mu selo imodzi imatha kupita ku ma cell oyandikana, kupangitsa kuti -kutenthe kwambiri.

Ichi ndichifukwa chake mapangidwe apamwamba a BESS, kuphatikizamakina osungira mphamvu za batire, kuphatikizira kuzizirira kwamadzi kapena kukakamizidwa-kuwongolera kutentha kwa mpweya kuvotera selo lililonse mkati mwazenera loyenera, ngakhale mutakhala ovuta kwambiri-zivuto. Makinawa amathandizira kuti-ku{4}}kufanane kutentha kwa ma cell, zomwe zimathandizanso kuti ma cell azigwira bwino ntchito komanso amawonjezera moyo wawo wonse.

Malire a Kutentha ndi Kutulutsa: Sali Ofanana

Iyi ndi mfundo yofunika kutsindika chifukwa imakopa anthu. Malire otulutsa ndi okulirapo kuposa malire a ndalama.

Mabatire ambiri a lifiyamu-akhoza kuthira madzi mosatekeseka pa madigiri -20 mpaka 60 digirii (-4 digiri F mpaka 140 digiri F), ngakhale kuti magwiridwe antchito amatsika mbali zonse ziwiri za sipekitiramuyo. Kulipiritsa, komabe, kuyenera kukhala 0 digiri mpaka 45 digiri (32 digiri F mpaka 113 digiri F).

Asymmetry ilipo chifukwa kuchangitsa ma lifiyamu ma ion kumapangitsa kuti ma electrolyte asakhazikike-njira yomwe imakhala yovuta pamene anode ikuzizira komanso mwaulesi kapena kutentha kwambiri kusokoneza electrolyte. Panthawi yotulutsa, njira ya electrochemical imakhala yokhululuka, ngakhale kuti katundu wolemetsa pa kutentha kwakukulu angapangitse kutentha kwa mkati ndikufulumizitsa kuvala.

Pazinthu zazikulu-zotumizidwa, kusiyanitsa kuli kofunika pakapangidwe kadongosolo. Amalonda ndi mafakitale BESS unsembekuyeretsa tsiku ndi tsiku-nthawi yotulutsa pometa kwambiri ikuyenera kuwonetsetsa kuti nthawi yochapira (nthawi zambiri masana kapena kutseka-nthawi yotentha kwambiri) komanso nthawi yotulutsa (nthawi yamadzulo kwambiri) imachitika m'malo otetezeka. Mapulatifomu a Intelligent EMS amalumikizana ndi BMS kuti azitha kukonza zomwe zili mkati mwazovutazi{3}}koma zida zowongolera kutentha ziyenera kukhalapo kuti zithandizire.

Chifukwa Chake Thermal Management Sili-Zokambirana za Energy Storage Systems

Kutentha si mzere wina wapapepala. Ndilo chinthu chachikulu kwambiri chakunja chomwe chimatsimikizira kuti makina anu amatha nthawi yayitali bwanji, momwe amagwirira ntchito motetezeka, komanso kuchuluka kwa phindu lomwe amabwerera pa moyo wake wonse. Funsani wophatikiza aliyense wa BESS yemwe wakhala akuchita ntchitoyi kwa zaka zingapo. Nkhani zankhondo pafupifupi nthawi zonse zimakhudza kasamalidwe ka kutentha.

Kasamalidwe koyenera ka kutentha kumagwira ntchito mu zigawo. Zowunikira za kutentha zomwe zimagawidwa mu batire yonse paketi zimapereka-data yeniyeni ya nthawi ndi ma module. BMS imayendetsa data ndikuyambitsa kutentha m'malo ozizira kapena kuyambitsa kuzizirira zinthu zikatentha. Khomo lokhalo limathandizira kudzera mu kapangidwe ka insulation, kukonza mpweya wabwino, komanso mavoti achitetezo ogwirizana ndi malo oyikapo.

Kuziziritsa zamadzimadzi kwakhala mulingo wapakatikati ndi -pamlingo waukulu wotumizira BESS. Imapereka mphamvu yowongolera kutentha, imasunga ma cell-mpaka{3}}kufanana kwa cell (nthawi zambiri mkati mwa digirii 2-3 , malinga ndi data yomwe imafalitsidwa ndi zophatikizira zotsogola za BESS), komanso imasamalira kuchuluka kwa matenthedwe kuchokera pakuyenda bwino-panjinga. Mpweya-makina oziziritsa akugwirabe ntchito poika zinthu zing'onozing'ono zongoyendetsa pang'onopang'ono{9}}koma makampani akhala akupita patsogolo kuziziritsa zamadzimadzi pafupifupi 200 kWh.

Zachuma ndi zomveka. Malinga ndi magwiridwe antchito ophatikizidwa ndi benchmarking yosungiramo mphamvu ya Wood Mackenzie, kuyika kwa LiFePO4 BESS koyendetsedwa bwino ndi kutentha kumawonetsa kuchepa kwa mphamvu zosakwana 5% patatha zaka zisanu zakuyenda panjinga tsiku lililonse. Makina osayendetsedwa bwino-kuzizira kosakwanira, osatenthedwa kale-kutentha, kusinthasintha kosalamulirika-amatha kutaya 15% mpaka 20% kapena kupitilira apo nthawi yomweyo. Za andalama zambiri-megawati-maola a BESS, kusiyana kumeneku kukuyimira madola masauzande mazana ambiri a mphamvu zomwe zatayika panthawi yonse ya polojekitiyi.

Njira Zabwino Kwambiri Zowongolera Kutentha kwa Battery Lithium

Palibe mwa izi chomwe chimafuna ukadaulo wachilendo. Zimafunikira kupanga kolingalira bwino komanso kuwongolera magwiridwe antchito.

Ikani makina a batri m'malo omwe amachepetsa kutentha kwa dzuwa, kutentha kwambiri, kapena kuzizira kosalekeza. Pazigawo zakunja, tchulani malo otsekeredwa okhala ndi ma IP oyenerera komanso kasamalidwe kazakudya kophatikizana-osati monga chowonjezera-, koma ngati gawo loyambira. Onetsetsani kuti BMS ikuphatikiza zonse-kutentha ndi kutsika-zigawo zotchinjiriza kutentha zomwe zimakhala zolimba-zotsekereza kapena kutulutsa madzi ngati zinthu sizili bwino.

Kuti muzisunga-kwanthawi yayitali, sungani mabatire pa charge ya 30% mpaka 50% pamalo otenthetsera-olamulirika apakati pa 10 digirii mpaka 25 digirii . Musasunge mabatire omwe ali ndi chaji chonse m'malo otentha{7}}kuphatikiza komweku ndi njira yachangu kwambiri yofikira kukalamba pakalendala. Poyenda, gwiritsani ntchito zoyika zotsekera kuti muchepetse kusinthasintha kwa kutentha, makamaka zonyamula zomwe zimadutsa madera osiyanasiyana anyengo.

Mukawunika ogulitsa BESS, yang'anani kupyola ma cell. Funsani za kasamalidwe ka matenthedwe, kuchuluka kwa kuwunika kwa kutentha kwa BMS, kuyezetsa kwa kutentha kwa dongosolo lonse (osati ma cell okha), komanso zitsimikiziro zokhudzana ndi kutsata kwa kutentha. Wothandizira amene amaperekakutha-ku-kuthetsa chithandizo chaumisirikuphatikiza kutsimikizira kamangidwe ka kutentha kudzapereka dongosolo lomwe limagwira ntchito pakanthawi zonse-osati yomwe imawoneka bwino pamapepala komanso yokhumudwitsa mu Ogasiti.

Kusankha Battery Yoyenera Yanyengo Yanu

Dongosolo loyenera la polojekiti yanu zimatengera komwe ikupita komanso momwe malo amawonekera chaka chonse-. Malo okhala m'madera otentha okhala ndi malo okhazikika amkati ali ndi zosankha zambiri. Ma projekiti pakutentha kwambiri kapena kuzizira kwambiri amafunikira machitidwe opangidwira momwemo, okhala ndi mphamvu zowongolera kutentha ndi BMS yolinganizidwa kuti kutentha kusinthasintha.

LiFePO4 chemistry imapereka m'mphepete mwachilengedwe muchitetezo komanso kulolerana kwamafuta. Zophatikizidwa ndi kuziziritsa kwamadzi kwamakono, BMS yanzeru, ndi malo otsekera bwino, makina opangira LiFePO4 amapereka magwiridwe antchito mosadukiza mu envulopu yayikulu yogwirira ntchito.

Kwa malonda ndi mafakitale, malo opangira magetsi, kapena ma solar-kuphatikiza-mapulojekiti osungira omwe amafunika kudalirika{2}chaka chonse, kuyang'anira koyenera kwa kutentha sikukweza{3}}ndizoyambira.Pemphani kukambirana ndi Polinovelkuti mukambirane njira zosungiramo mphamvu zopangidwira pazomwe mukukumana nazo komanso momwe mumagwirira ntchito.

Mafunso Ofunsidwa Kawirikawiri