Wanem samting em 'thermal insulation'?

Battery fire

Olsem na dispela Aricell faktori paia long Korea long las yia. 23 i dai. Sapos yu wok long ol bateri ating yu bin bihainim gut tru.

Ol praimeri sel i no Li-ion, tasol wankain as hevi-hat bilong wanpela sel i kukim narapela sel, nogat rot long stopim taim em i stat. Ful haus kago i pinis insait long sampela minit tasol.

Ol samting bilong pasim hat namel long ol sel bilong daunim dispela. Em tasol tru.

Mi no giaman, hevi bilong ol lo i kamap bikpela moa bihain long GM i mas pulim bek olgeta dispela Bolt. Na Hyundai wantaim ol Konas. Ol lain bilong kisim ol samting husat i no bin askim long 'thermal management' bipo ol i laikim ol ripot bilong tes, ol samting bilong wokim ol samting, na olgeta samting.

GB 38031 long Saina i tok yu nidim 5 minit pastaim long 'propagation' i go long ol sel we i stap klostu. Yurop i gat wankain samting nau long ECE R100. Pen long as bilong tok klia tasol ating em i mas.

Insulesen i save mekim wanem

Em i no stopim 'thermal runaway' long kamap. Nogat wanpela samting i save kamap taim wanpela sel i pasim tok long go. BMS inap long kisim sampela 'failure modes' hariap tasol sapos 'internal short' i kamap yu gat hevi pinis.

What insulation actually does

Insulesen i save sloim ol samting bihain. Baim taim. Ating BMS i katim pawa pastaim long narapela sel i go. Ating wanpela i harim alam na i ranawe long 'forklift'.

Na tu i save pasim hat long kukim haus bilong ol 'pack'. O haus kago. Mi lukim ol piksa bilong wanem samting i save kamap taim bateri bilong 'forklift' i go insait long wanpela rum we i pulap long katbod. No naispela.

Ol samting bilong kol weta tu-insulesen i save holim hat i stap taim yu laikim em i hat. I no inap long sasim Li-ion aninit long mak bilong ais na i no bagarapim. Pleting long anode, lus bilong kapasiti oltaim. Polinovel i bin kamapim wanpela sistem bilong hatim em yet long 2019 long dispela samting stret. Ol ples bilong maining long hap not, kol stoa, na ol narapela samting. Ol samting bilong hatim haus insait + insulesen ausait=pek i save stap hat long nait.

Ol samting

Aerogel

Olgeta manmeri i save toktok long 'aerogel'. Na ye em i gutpela tru-thermal konduktiviti i liklik tru, olsem aninit long 0.02 W/m·K. Aspen Aerogels i save wokim ol gutpela samting.

Kost Fakta

Tasol pe bilong en i bikpela tru. Olsem 5-10x long wanem yu bai baim long seramik. Ating em i wok long Tesla. I no wok long ol indastriel ikwipmen we ol 'margin' i sot.

Seramik Faiba

Ceramic fiber em samting we planti bilong yumi i save yusim. Ol bod bilong 'aluminium silicate', 'mullite', wanem samting. Em inap long holim 1000 digri +, em i no gat bikpela pe tumas. Em i bruk bruk olsem na yu mas putim 'polymer' long en. Morgan i save wokim, Unifrax, planti saplaia bilong Saina.

PCMs

Ol PCM i bin stap longpela taim. Ol samting we i save senisim 'phase'-i save kisim hat taim ol i melt. Em i gutpela inap long yu luksave olsem ol 'thermal events' tru i no tingim ol tingting bilong yu long disain. Sel klostu long PCM i stap pinis long 200 digri na i wok long go antap. Mipela i stop long makim ol dispela samting long ol bikpela samting.

Ol fom oltaim

Ol fom olsem PU o EVA-gutpela long daunim guria na pulapim ol spes. I no bilong pasim hat. Planti bilong ol i save kisim paia long taim we yu ken lukim taim yu ranawe.

Ol samting we i no gat as bilong en

Ol basbar. Kopa i save melt taim ol sel i kamap hat inap. Sapos hai-voltej bas bilong yu i stap klostu tumas long ol sel terminal yu wokim wanpela sot seket rot. Ol 'ceramic spacers' i helpim.

Ol spes long ol modul. Olgeta manmeri i laikim bikpela eneji densiti olsem na ol i mas bungim gut. Orait wanpela modul i go na hat i no gat hap bilong go aut tasol i go insait long narapela modul. Mipela i save lusim 5-10mm spes wantaim 'ceramic felt' namel long en. Lusim sampela 'density', kisim planti 'safety margin'.

Tiknes bilong insulesen-i go daun i go bek moa long 6mm. Bikpela senis namel long 3-6mm. Bihain long dispela yu wok long skruim hevi.