Dɛn Ne Prismatic Nkwammoaa?

Prismatic nkwammoaa yɛ lithium-ion battery nkwammoaa a ɛyɛ ahinanan a wɔde aluminium anaa dade dan akata so. Wɔn nsusuwii a ɛyɛ tratraa, a ɛte sɛ adaka- ma kwan ma wɔde stacking yiye wɔ battery modules mu, na ɛma wɔyɛ soronko wɔ cylindrical cells a wɔde electrodes a wɔabobɔw di dwuma wɔ casings kurukuruwa mu no ho.

Wɔ prismatic nkwammoaa mu no, wɔde electrode nkratafa a anode, cathode, ne separator ka ho no boaboa ano anaasɛ wɔbobɔw na wɔyɛ no petee. Saa nhyehyɛe yi ma wɔn a wɔyɛ no tumi yɛ nkwammoaa ankorankoro akɛse a ɛkora ahoɔden pii wɔ unit biara mu bere a wɔde toto cylindrical alternatives ho no. Prismatic cell biako betumi akura ahoɔden a ɛne nkwammoaa a ɛyɛ kurukuruwa 20 kosi 100 yɛ pɛ, na ɛma anyinam ahoɔden nkitahodi dodow a ehia wɔ batere mu no so tew kɛse.

Prismatic nkwammoaa a wɔyɛ no di akwan titiriw abien akyi. Prismatic nkwammoaa a wɔaboaboa ano no wɔ electrode layers a wɔde asi wɔn ho wɔn ho so tẽẽ, bere a prismatic nkwammoaa a wɔabobɔw no de electrode ahorow a wɔabɔ no kurukuruwa ayɛ no spiral a ɛyɛ tratraa ansa na wɔahyɛ no ma akɔ ahinanan casing no mu. Nsusuwii biara de aguadi-nkɔso pɔtee bi ma wɔ nneɛma a wɔyɛ no yiye ne adwumayɛ su ahorow ntam.

Aluminium anaa dade akyi no di dwuma pii sen ahobammɔ a ɛnyɛ den. Ɛma structure rigidity, ɛhwɛ emu nhyɛso so bere a charge-discharge cycles, na ɛboa ma ɔhyew dissipation. Casing no mu duru taa yɛ bɛyɛ 1.1mm ma aluminium shells, a ɛma ahobammɔ ne emu duru ho nsusuwii kari pɛ. Saa ade a wɔde akata so a ɛyɛ den yi ma nsonsonoe da prismatic nkwammoaa ne kotoku nkwammoaa a wɔde aluminium laminate a ɛyɛ mmerɛw a wɔde kyekyere nneɛma di dwuma no ntam.

Electrode nhyiam hwehwɛ sɛ wɔyɛ no pɛpɛɛpɛ. Wɔ nhyehyɛe ahorow a wɔaboaboa ano mu no, anode nkrataa nyinaa de anyinam ahoɔden di nkitaho, sɛnea cathode nkrataa nyinaa yɛ no, ansa na wɔde ahyɛ casing no mu. Rolled designs mframa electrode layers wɔ jig, afei flatten wɔn ma wonya rectangular profile. Akwan yi ntam a wɔpaw no ka ahoɔden dodow, ɔhyew adwumayɛ, ne nneɛma a wɔyɛ no.

Prismatic Cells

Geometry a ɛyɛ ahinanan no de nkɔso kɛse ba wɔ packing efficiency mu. Sɛ wɔahyehyɛ prismatic nkwammoaa wɔ batere module mu a, eyi mframa mu nsonsonoe a ɛwɔ nkwammoaa nhyehyɛe a ɛyɛ kurukuruwa mu no fi hɔ. Eyi kyerɛ sɛ volumetric ahoɔden density a ɛkorɔn-taa yɛ 600-700 Wh/L sɛ wɔde toto 500-600 Wh/L ma cylindrical cells ho a.

Wɔ anyinam ahoɔden kar a wɔde di dwuma fam no, saa ahunmu a wɔde yɛ adwuma yiye yi da adi sɛ ɛsom bo titiriw. Nolithium kar batere a wɔde yɛ adwumapacks a ɛwɔ nnɛyi EV ahorow mu no nya mfaso fi prismatic cells tumi a ɛma ahoɔden a wɔkora so kɛse wɔ kar nhyehyɛe a wɔahyɛ no den mu. Wɔn a wɔyɛ no betumi ayɛ batere a wɔde abɔ ho a ɛkame ayɛ sɛ wɔde cubic centimeter biara di dwuma, na ama kar ahorow no atu mpɔn tẽẽ a wɔremma pack no kɛse nkɔ soro.

Nkɔso a aba nnansa yi pia saa ahye ahorow yi kɔ akyiri. GM ne LG Energy Solution’s lithium manganese-rich prismatic cells, a wɔayɛ nhyehyɛe sɛ wɔbɛyɛ wɔ aguadi mu wɔ afe 2028 mu no, da ahoɔden a ɛkɔ soro 33% adi sɛ wɔde toto lithium iron phosphate cells ho a ne bo yɛ den. Saa nkɔso yi de wɔn ani asi lɔre ahorow a anyinam ahoɔden wom a ehia sɛ wɔde bɛboro akwansin 400 kɔ akyirikyiri bere a ɛtew batere ho ka so no so.

Battery pack nhyiam a ɛyɛ den no so tew kɛse wɔ prismatic nkwammoaa mu. Ebia pack a ɛhia cylindrical cells 100 behia prismatic cells 5-10 pɛ na ama wɔanya tumi a ɛyɛ pɛ. Nkwammoaa kakraa bi kyerɛ sɛ weld kakraa bi na ɛwɔ hɔ, mmeae kakraa bi a ebetumi adi huammɔ, na bere a wɔde yɛ no so tew.

Ɛsono sɛnea anyinam ahoɔden nkitahodi nhyehyɛe no yɛ soronko koraa. Prismatic nkwammoaa no wɔ terminal tabs wɔ soro anaa n’awiei, na ɛma wotumi de nkitahodi a ɛne ne ho di nsɛ anaasɛ ɛtoatoa so tẽẽ. Nnɛyi akwan a wɔfa so yɛ nneɛma, te sɛ ENNOVI anammɔn biako-lamination nhyehyɛe no, ka akwansin a ɛwɔ ahoɔden a ɛba fam, aluminium ahoɔden a ɛboaboa ano a ɛwɔ ahoɔden a ɛkorɔn, ne busbar a ɛwɔ awiei no bom wɔ adwuma biako mu. Saa ade foforo yi yi anammɔn pii a wɔfa so yɛ nhyiam no fi hɔ bere a ɛma ahotoso tu mpɔn no.

Nanso, saa adwene a wɔde si biribi so yi ma obi yɛ mmerɛw. Bere a cylindrical cell packs betumi akɔ so ayɛ adwuma a tumi so atew sɛ nkwammoaa ankorankoro di nkogu a, prismatic cell biako pɛ a entumi nyɛ adwuma yiye no betumi aka module no nyinaa. Ɛsɛ sɛ nhyehyɛe ahorow a wɔde di dwuma wɔ batere so no de ahobammɔ a emu yɛ den ma nkwammoaa biara na ama asiane yi so atew.

Ɔhyew a wɔsɛe no de mfaso ne nsɛnnennen nyinaa ba prismatic nkwammoaa so. Nneɛma akɛse a ɛyɛ tratraa no ma ɛyɛ mmerɛw sɛ ɛne mprɛte a ɛma onwini anaa nhyehyɛe ahorow a wɔde hwɛ ɔhyew so di nkitaho tẽẽ. Adwinnifo betumi de nneɛma a ɛma onwini abata nkwammoaa anim tẽẽ, na ama wɔatumi ayi ɔhyew a etu mpɔn bere a wɔrebɔ ntɛmntɛm anaasɛ wɔde ahoɔden a ɛkɔ soro-pue no.

Nanso compact stacking a ɛma ahoɔden density tu mpɔn no nso ma ɔhyew no yɛ kɛse. Prismatic nkwammoaa pii a wɔapiapia no betumi anya ɔhyew a ɛkɔ soro sɛ onwini nhyehyɛe ahorow no nyɛ adwuma yiye a. Mmeae a ɛyɛ hyew na ɛba baabi a ɔhyew boaboa ano ntɛmntɛm sen sɛ ɛbɛsɛe. Ɔhyew ho nhyehyɛe a ɛkɔ akyiri bɛyɛ nea ɛho hia, titiriw wɔ dwumadie a ɛkorɔn-adwuma mu.

Nkwammoaa a ɛte sɛ kurukuruwa fi awosu mu nya mfaso fi nsonsonoe a ɛda unit ahorow ntam no mu, na ɛma mframa kɔ ma ɛyɛ nwini a ɛnyɛ adwuma. Prismatic nhyehyeɛ hwehwɛ sɛ wɔde engineered cooling solutions-nsuo cooling loops, phase-change nneɛma, anaa graphene-enhanced thermal pads. Mprempren wɔn a wɔyɛ nneɛma binom de nneɛma a ɛsesa nneɛma a ɛyɛ phase-ka prismatic packages mu, twetwe ɔhyew wɔ charge cycles a ɛkɔ ntɛmntɛm mu na wogyae no nkakrankakra wɔ ɛno akyi. Mfitiaseɛ nhwɛsoɔ kura adwumayɛ a ɛyɛ den wɔ 45℃ambient temperature a ennu 5℃emu hyew kɔ soro wɔ 0.5C discharge rates.

Nneɛma a wɔyɛ no afiri a wɔde yɛ prismatic nkwammoaa no di akyi wɔ cylindrical cells a wɔyɛ mu. Cylindrical formats te sɛ 18650 ne 21700 nya mfasoɔ firi mfeɛ du du a wɔde ayɛ standardized production techniques, a ɛma high-volume output a ɛwɔ quality a ɛkɔ so daa. Prismatic nkwammoaa nni amansan format gyinapɛn-a VDA PHEV2 nkyerɛkyerɛmu a ɛtaa ba wɔ German kar dwumadie mu no nka ho.

Saa gyinapɛn a enni hɔ yi kyerɛ sɛ prismatic nkwammoaa dodow no ara yɛ nea wɔayɛ ama dwumadie pɔtee bi. Wɔn a wɔyɛ nneɛma no yɛ nsusuwii soronko, tumi, ne terminal nhyehyɛe ahorow de di adetɔfo ahiade ahorow ho dwuma. Bere a saa nsakrae yi ma wotumi de nkabom a eye sen biara no, ɛma ɛka kɔ soro na ɛma dodow a wɔkra a ɛba fam koraa no kɔ soro. Ɛsɛ sɛ wɔwie sɔhwɛ ne adansedie mmiako mmiako ma adwini ahodoɔ biara.

Pɛpɛɛpɛ a ɛho hia ma electrode stacking anaa rolling no ma adwini yɛ den. Ɛsɛ sɛ layers no hyia yiye na wɔasiw emu short circuits ano. Sɛ wɔde toto nneɛma a ɛho akokwaw, a wɔde afiri yɛ kɛse a wɔde yɛ nkwammoaa a ɛyɛ kurukuruwa no ho a, ɛbɛyɛ nea ɛho hia kɛse. Saa nneɛma yi boa ma ɛka a wɔbɔ wɔ ade biako biara ho no kɔ soro, ɛwom sɛ sikasɛm a ɛkɔ soro no brɛ nsonsonoe no ase nkakrankakra bere a nneɛma a wɔyɛ no dodow kɔ soro no.

Prismatic nkwammoaa hia abɔnten so nhyɛso na ama wɔakɔ so ayɛ adwuma yiye wɔ wɔn nkwa nna nyinaa mu. Bere a nkwammoaa no bɔ no, lithium ions tu kɔ graphite anode no mu, na ɛma ne kɛse trɛw. Silicon-enhanced anodes ma saa ahurututu yi yɛ kɛse kɛse. Sɛ nhyɛso a ɛkɔ so tra hɔ gyina hɔ ma electrode wimhyɛn ahorow no nni hɔ a, layers betumi delaminate, atew adwumayɛbea a ɛyɛ nnam ne tumi a ɛsɛe so.

Battery module ahorow a wɔtaa de di dwuma no de tumi a edi kan a ɛyɛ 3kN di dwuma de kɔ mprɛte awiei ma PHEV2 format nkwammoaa a ɛyɛ gyinapɛn. Saa nhyɛso yi ma electrode layers kɔ so di nkitaho wɔ charge-discharge cycling nyinaa mu, na esiw mfiri brɛ ne mpaapaemu ano. Ɛsɛ sɛ module nhyehyɛe ahorow bu akontaa fa mfitiase nhyɛso ahwehwɛde ne nhyɛso a ɛkɔ soro wɔ nkwa awiei nyinaa ho.

Prismatic nkwammoaa a ɛyɛ ahinanan no ntwea a ɛyɛ nsensanee no gyina hɔ ma mmeae a ɛyɛ mmerɛw wɔ nhyehyɛe mu. Saa mmeae yi ma mfiri mu nhyɛso a efi wosow ne nsunsuanso mu ba no yɛ kɛse. Ɛsɛ sɛ nneɛma a wɔde bɔ nkwammoaa ho ban bɔ nkwammoaa ho ban yiye, titiriw wɔ kar mu a ɛda adi sɛ ɛho hia sɛ ɛtra hɔ kyɛ wɔ ɔhyew a ɛboro so ne akwan so tebea horow mu no. Casing a ɛyɛ den no ma ahobammɔ bi, nanso mpɛn pii no ɛnyɛ den pii te sɛ cylindrical cells’ mfiri ahoɔden.

Prismatic Cells

Prismatic nkwammoaa no gye lithium-ion nnuru ahorow, a emu biara fata ma tebea ahorow a wɔde di dwuma. Lithium dade phosphate nnuruyɛ ne prismatic format no di nkitaho yiye titiriw. LFP batere de nneɛma a ɛdɔɔso, a ɛho ka sua-kwati cobalt ne nickel a ne bo yɛ den-bere a ɛde ɔhyew a ɛyɛ papa ne kyinhyia nkwa tenten a ɛboro kyinhyia 3,000 ma.

Nickel manganese cobalt ne nickel cobalt aluminium nnuru nso pue wɔ prismatic nhyehyɛe ahorow mu, na wɔde wɔn ani si dwumadie a ɛhwehwɛ ahoɔden a ɛkɔ soro so. Format a ɛyɛ mmerɛw no ma wɔn a wɔyɛ no tumi paw chemistry yiye ma adwumayɛ ho ahwehwɛde pɔtee bi a wɔnsan nsusuw battery nhyehyɛe no nyinaa ho.

Kar a anyinam ahoɔden wom gyina hɔ ma nea wɔde di dwuma titiriw, titiriw wɔ Asia gua ahorow a wɔn a wɔyɛ no de LFP prismatic nkwammoaa di kan no so. Saa batere yi ahoɔden gyinapɛn-range Tesla mfonini ahorow a wɔyɛ wɔ China, ne kar afoforo pii. Format no ahunmu efficiency ne ɛka a mfaso wɔ so no ne EV sikasɛm hyia. Ahoɔden a wɔkora so nhyehyɛe a wɔde yɛ grid-scale applications ne renewable energy integration saa ara nso pɛ prismatic cells ma wɔn ahoɔden, cycle nkwa tenten, ne ogya ho asiane a ɛba fam sɛ wɔde toto cylindrical alternatives ho a.

Ɛlektrɔnik mfiri a wɔde di dwuma de prismatic cell nketewa di dwuma wɔ mfiri te sɛ smartphone, tablet, ne laptop a ɛda adi sɛ ɛho hia sɛ wɔde profile a ɛyɛ tratraa di dwuma no mu. Aduruyɛ mfiri, telefon so nkitahodi nhyehyɛe a wɔde sie, ne anyinam ahoɔden nnwinnade a wɔmfa nhama nni dwuma gyina hɔ ma gua afoforo a wɔde mfaso horow a ɛwɔ ɔkwan a wɔfa so yɛ no so di dwuma.

Sɛ wɔresusuw battery cell ahorow ho a, metrics pii a wotumi susuw ho no kyerɛkyerɛ adwumayɛ su ahorow mu. Prismatic nkwammoaa taa de tumi a efi 20Ah kosi bɛboro 300Ah ma wɔ nkwammoaa biara mu. Cylindrical nkwammoaa max out bɛyɛ 5-6Ah ma common formats te sɛ 21700, ɛwom sɛ Tesla 4680 cell du bɛyɛ 25Ah.

Tumi density de aguadi-off ba. Nkwammoaa a ɛyɛ kurukuruwa no nya ahoɔden a ɛkɔ soro kodu 1,500 W/kg, na wonya mfaso fi nkitahodi pii mu wɔ amp-dɔnhwerew biara mu. Prismatic nkwammoaa taa du 1,000-1,200 W/kg, na ɛde ahoɔden a wɔkora so di kan sen ahoɔden a wɔde ma ntɛm ara. Eyi ma nkwammoaa a ɛte sɛ kurukuruwa yɛ nea wɔpɛ ma nnwuma a ɛyɛ adwuma yiye a ɛhwehwɛ sɛ wogyae ahoɔden ntɛmntɛm, bere a prismatic nkwammoaa di mu wɔ nnwuma a ɛhwehwɛ sɛ wɔde ahoɔden a ɛkɔ so daa di dwuma mu.

Gravimetric ahoɔden density fa cylindrical cells a ɛyɛ bɛyɛ 260 Wh/kg kyerɛ 200 Wh/kg ma prismatic configurations. Nsonsonoe no fi casing material ahwehwɛde-prismatic nkwammoaa hia afasu a ɛyɛ den de tua mfiri a ɛyɛ den a ɛso atew no so ka sɛ wɔde toto cylindrical geometry ho a. Nanso, volumetric energy density dan mfaso yi, na prismatic nkwammoaa de ahunmu di dwuma yiye.

Ɛsono sɛnea kyinhyia nkwa nna gyina nnuruyɛ ne adwumayɛ tebea horow so sen sɛ ebegyina nkwammoaa no kwan so nkutoo. Ahorow abien no nyinaa betumi aboro kyinhyia 2,000 sɛ wɔhwɛ so yiye a. Prismatic LFP nkwammoaa taa boro kyinhyia 5,000 wɔ dwumadie a ɛyɛ papa mu. Nsonsonoe titiriw no gyina sɛnea abɔnten nneɛma-ɔhyew a wɔhwɛ so, charge rates, depth of discharge-ka nkwa tenten.

Sikasɛm a ɛfa nneɛma a wɔyɛ ho nya nkwammoaa a wɔpaw no so nkɛntɛnso kɛse. Cylindrical cells nya mfasoɔ firi production infrastructure a ɛho akokwa ne standardization mu, na ɛde ka a ɛba fam wɔ-kilowatt-dɔnhwerew biara mu berɛ a wɔyɛ no wɔ scale mu. Nneɛma a wɔde twitwiw nneɛma a wɔde wɔn ankasa yɛ ne mfe du du pii a wɔde siesie nneɛma no ma wotumi yɛ nneɛma ntɛmntɛm na ɛkɔ so daa.

Prismatic cell a wɔyɛ ho ka da so ara yɛ kɛse esiane sɛnea wɔhwehwɛ sɛ wɔyɛ no sɛnea wɔpɛ ne automation a ɛnyɛ kɛse nti. Nanso, nhyehyɛe-level sikasɛm betumi apɛ prismatic nkwammoaa. Nkwammoaa kakraa bi a ɛwɔ pack biara mu no so tew adwuma a wɔyɛ de boaboa ano no so, ɛma batere a wɔde di dwuma no yɛ mmerɛw, na ɛma weld dodow so tew. Wɔ-format dwumadie akɛseɛ te sɛ anyinam ahoɔden lɔre anaa grid storage, saa sika a wɔkora soɔ yi bɛtumi atua cell ka a ɛkɔ soro.

Nneɛma a wɔde yɛ nneɛma ho ka ka ɔkwan abien no nyinaa so pɛpɛɛpɛ, ɛwom sɛ nnuru a wɔpaw no ho hia sen nkwammoaa nsusuwii de. Nsakrae a ɛkɔ LFP nnuruyɛ mu wɔ prismatic nkwammoaa mu no de manganese ne dade pii di dwuma sen sɛ wɔde cobalt ne nickel a ɛho yɛ na bedi dwuma, na ebetumi atew nneɛma ho ka so 20-40% sɛ wɔde toto nnuru a nickel pii wom ho a.

Sɔhwɛ ne adansedi ho ka de prismatic cell ho ka ka ho bere a nhyehyɛe ahorow no nni gyinapɛn a ɛfata no. Ɔkwan soronko biara hwehwɛ sɛ wɔgye tom a ɛsono emu biara, ɛma bere-kɔ-gua ne nkɔso ho ka kɔ soro. Nnwumayɛfoɔ mmɔdenbɔ a ɛkɔ gyinapɛn kɛseɛ mu no bɛtumi atew saa nsonsonoeɛ yi so, ɛwom sɛ mprempren gua so nkɔsoɔ pɛ application-specific optimization sene amansan formats.

Battery ahobanbɔ ka huammɔdi akwan pii-ɔhyew guankɔbea, emu tiawa, electrolyte a ɛtwetwe, ne mfiri a ɛsɛe. Prismatic nkwammoaa di asiane ahorow bi ho dwuma bere a ɛde afoforo ba no. Dade a ɛyɛ den no ma ahobammɔ pa fi abɔnten so a wɔtow ho sɛ wɔde toto kotoku mu nkwammoaa ho a, ɛwom sɛ ɛmma mfiri ahoɔden pii te sɛ nea wɔayɛ no kurukuruwa de.

Tumi kɛse a nkwammoaa biara tumi yɛ no ma ahoɔden pii boaboa ano wɔ ade biako mu. Prismatic cell biako a entumi nyɛ adwuma yiye no betumi ama ahoɔden pii afi hɔ sen cylindrical cell a entumi nyɛ adwuma yiye. Nanso, nkwammoaa a ɛwɔ pack bi mu nyinaa kakraa bi na ɛtew mmeae a ebetumi adi huammɔ no so. Saa aguadi-off yi hwehwɛ sɛ wɔyɛ battery management system a wɔde ahwɛyiye yɛ de hwɛ cell biara voltage, temperature, ne charge tebea.

LFP nnuru a ɛwɔ prismatic nkwammoaa mu no de ahobammɔ mu mfaso ahorow a efi awosu mu ma. Lithium iron phosphate da ɔhyew mu ahoɔden a ɛkorɔn adi sɛ wɔde toto nickel-cobalt nnuru ho a, asiane a ɛwɔ hɔ sɛ ɔhyew guan no sua wɔ tebea horow a wɔde di dwuma ɔkwammɔne so mpo mu. Ade no nnyi oxygen mfi mu bere a ɔhyew reporɔw no, na ɛtew ogya ho asiane so. Saa su yi ma LFP prismatic nkwammoaa yɛ nea ɛyɛ anigye titiriw ma stationary storage applications a ahobammɔ sen ahoɔden density ahwehwɛde.

Wɔn a wɔyɛ no de ahobanbɔ nneɛma pii-nhyɛso a wɔde yi mframa, mfiri a wɔde twa nneɛma mu mprempren, ɔhyew fuses, ne ogyaframa-retardent separators bom. Battery management system no de ahobammɔ kwan a edi kan ma, esiw charge a ɛboro so, over-discharge, ne ɔhyew a ɛboro so a ebetumi akanyan cascading huammɔdi ano.

Wiase nyinaa prismatic cell gua no kyerɛ nkɔso akwan a ɛyɛ den. Guadiɛ boɔ firi dɔla ɔpepepem 7.5 kɔsi dɔla ɔpepepem 12.5 wɔ afe 2024 mu, na nsusuiɛ a ɛbɛduru dɔla ɔpepepem 35.2 wɔ afe 2033. Eyi gyina hɔ ma afe afe nkɔsoɔ a wɔaka abom a ɛfiri 9.5% kɔsi 15%, a ɛnam anyinam ahoɔden kar a wɔgye tom ne ahoɔden a wɔde yɛ foforɔ a wɔkora so ntrɛmu titire.

Asia-Pacific na ɛdi nneɛma a wɔyɛ so, na ɛyɛ bɛyɛ 45-70% wɔ wiase nyinaa nneɛma a wɔyɛ no mu. China di anim wɔ nneɛma a wɔyɛ mu, a agofomma atitiriw a CATL, BYD, ne LG Chem ka ho a wɔyɛ gigafactories a wɔyɛ prismatic nkwammoaa wɔ ɔkwan kɛse so. Northvolt Europa adwumayɛbea a ɛwɔ Norway, a ɛde n’ani asi 60 GWh afe afe ahoɔden so wɔ afe 2024 mu no gyina hɔ ma lithium-ion batere adwumayɛbea kɛseɛ a ɛwɔ Asia akyi.

Mfiridwuma mu nneɛma foforo kɔ so yɛ ntɛmntɛm. Solid-state battery nkɔso hyɛ bɔ sɛ ahoɔden densities a ɛkorɔn ne ahobammɔ a ɛkɔ anim, a prismatic formats yiye-gyinabea yiye sɛ ɛbɛfa solid electrolytes. Nhwehwɛmu a wɔbɛyɛ wɔ silicon anodes, graphene thermal management materials, ne cathode chemistry a ɛkɔ anim ho no so bɛba mfaso wɔ prismatic cell designs mu.

Kar adwuma no batere ho nhyehyɛe no de prismatic nkwammoaa ka ho kɛse. Volkswagen ayɛ nhyehyɛɛ sɛ wɔde prismatic cells bedi dwuma wɔ ne EVs 80% mu wɔ afe 2025 mu, de nnuruyɛ mu nsakraeɛ mmiɛnsa-LFP, manganese-based, ne nickel-rich-di dwuma de ama ɛka ne adwumayɛ ayɛ yie wɔ kar afã ahodoɔ nyinaa mu. Saa nhyehyɛe a wɔde yɛ nneɛma ahorow pii yi ma wɔn a wɔyɛ nneɛma no tumi de batere ho nsɛm hyia kar pɔtee bi a wɔhwehwɛ a wɔnyɛ nsakrae wɔ sɛnea wɔtɔn no kɛse mu.

Akyinnyegye a ɛfa prismatic ne cylindrical ho no nni amansan nyinaa mmuae. Format biara di mu wɔ nsɛm pɔtee bi mu. Nkwammoaa a ɛyɛ kurukuruwa fata dwumadie a ɛhwehwɛ sɛ wɔde ahoɔden kɛseɛ, ɔhyew a wɔde di dwuma yie, ne mfiri a ɛyɛ den. Nnwinnade a ahoɔden wom, e-sakre, ne kar a ɛyɛ adwuma yiye-a ɛde wɔn mfaso di dwuma. Standardization ma wotumi yɛ design iteration ntɛmntɛm ne component sourcing.

Prismatic nkwammoaa da adi sɛ eye sen biara wɔ baabi a ahunmu a wɔde di dwuma yiye, tumi a ɛkɔ soro wɔ nkwammoaa biara mu, ne nkitahodi dodow a ɛso atew no ma bo a ɛsom no. EV akɛse-format, grid storage systems, ne telecommunications backup power nya mfasoɔ firi saa su yi mu. Tumi a wotumi sesa nsusuwii ahorow ma application pɔtee bi no ma wotumi ne nhyehyɛe nhyehyɛe no bom denneennen.

Wɔn a wɔyɛ batere pack no fa akwan a wɔde afrafra so kɛse, na wogyina kar no fã ne sɛnea wɔde di dwuma so paw cell format ahorow. Kar ahorow a wɔde wɔn ani si adwumayɛ so no betumi de nkwammoaa a ɛyɛ kurukuruwa adi dwuma ama ahoɔden a ɛkorɔn. Mass-guade anyinam ahoɔden kar ahorow a wɔde wɔn ani si baabi a wobetumi akɔ ne ɛka a wɔbɔ no yiye no fa prismatic nkwammoaa ho. Lɔre ne aguadi kar ahorow a ɛhwehwɛ sɛ wɔkora ahoɔden kɛse wɔ dodow a wɔahyɛ da ayɛ mu no paw prismatic nhyehyɛe ahorow.

Guadi mu nkɔso kyerɛ sɛ wɔbɛkɔ so atra faako abom sen sɛ wɔbɛma wɔadi ɔkwan a wɔfa so yɛ nneɛma so. Nkɔso a ɛbɛba wɔ nneɛma a wɔyɛ mu, nnuruyɛ mu nkɔso, ne ɛka a wɔatew so no bɛkɔ so bere koro mu ama ahorow abien no nyinaa. Paw a eye sen biara no gyina dwumadie-nneɛma pɔtee a ɛhia{3}}ahoɔden dodoɔ, tumi dodoɔ, ɛka, nkwa nna, ahobanbɔ, ne form factor anohyetoɔ so.

Prismatic Cells

Mpɛn pii no, prismatic nkwammoaa di ahoɔden kyinhyia 2,000 kosi 7,000 a egyina nnuru ne adwumayɛ tebea so. LFP prismatic cells taa boro 5,000 cycles a wɔde ɔhyew a wɔhwɛ so yiye na ɛkwati deep discharge a ɛba fam sen 20% state of charge. Cycle nkwa kyerɛ ase sɛ mfe 5-10 wɔ dwumadie dodoɔ no ara mu.

Prismatic nkwammoaa boa charge ntɛmntɛm denam ɔhyew a wɔhwɛ so nhyehyɛe a ɛfata so. Nsusuwii pii gye 1C kosi 2C charge rates, a ɛkyerɛ sɛ charge a edi mũ wɔ simma 30-60 mu. Nnwini nhyehyɛe a ɛkɔ anim a wɔde nsu a ɛma onwini anaa nneɛma a ɛsakra nneɛma di dwuma no siw ɔhyew a ɛkɔ soro dodo bere a wɔrebɔ no ntɛmntɛm no ano, na ɛma nkwammoaa no akwahosan ne ahobammɔ kɔ so tra hɔ.

Per-cell ka ma prismatic units taa boro cylindrical cells esiane customization ne automation a ɛba fam nti. Nanso, system-level ka betumi ama prismatic designs ayɛ yiye denam assembly adwumayɛfo a wɔatew so ne components kakraa bi so. Ka a wɔbɔ nyinaa gyina dwumadie-nneɛma pɔtee a ɛka ho ne nneɛma a wɔyɛ, nkabom a ɛyɛ den, ne tumi a wɔhwehwɛ.

Prismatic nkwammoaa no yɛ nea wotumi san de di dwuma koraa. Wobetumi atew aluminium anaa dade a wɔde ahyɛ mu no mu na wɔayɛ ho adwuma a ɛnyɛ nea ɛfa nneɛma a ɛyɛ adwuma ho. Wobetumi anya lithium, cobalt, nickel, ne manganese na wɔasan de adi dwuma wɔ batere foforo mu. Nneɛma a wɔde yɛ nneɛma a wɔsan de di dwuma no kɔ so trɛw de di batere dodow a ɛrenya nkɔanim a efi kar a anyinam ahoɔden wom ne ahoɔden a wɔkora so nhyehyɛe ahorow mu a ɛredu nkwa nna awiei no ho dwuma.