Wanem Em Dip bilong Discharge?

Dip bilong 'discharge' em i pesen bilong 'capacity' yu bin pulim aut long wanpela bateri. Sapos yu stat long ful na ranim i go daun long 20%, dispela em i 80% DoD. Em i isi tru.

As tingting bilong ol manmeri long dispela namba em i 'cycle life'. Olgeta 'battery datasheet' i save givim yu wanpela 'cycle rating', tasol dispela 'rating' i no gat mining sapos yu no save long DoD we ol i bin testim. Wanpela sel we i gat mak bilong 4000 saikel long 50% DoD i ken givim yu 1200 saikel tasol sapos yu ranim em long emti olgeta taim. Mi bin lukim ol projek i bagarap long dispela. Wanpela man i makim wanpela sistem bihainim hetlain saikel namba na i no ritim liklik rait, na tupela yia bihain olgeta samting i pinis.

Dispela em samting. Pasin bilong ron long 'shallow cycling' i save mekim laip i go longpela taim, tasol dispela i min tu olsem yu baim 'capacity' we yu no save yusim. Wanpela 100 kWh sistem we i gat mak bilong 60% DoD i givim yu 60 kWh long wan wan saikel. Yu ken baim wanpela liklik pek na ranim strong moa. Sapos dispela i stret o nogat, dispela i dipen long ol kos bilong sel, kos bilong senisim, ol hevi bilong sait, na samting olsem 15-pela narapela samting. I no gat wanpela stretpela bekim bilong olgeta manmeri.

Ol LFP sel i senisim matematiks long dispela. Faivpela yia i go pinis, wok bilong ranim NMC i go long 90% DoD i bin askim long hevi. Sait bilong 'cathode' i pundaun. Oksijen i lus, bagarap bilong straksa, olgeta samting we i save kamap. LFP i no gat ol dispela 'failure modes' long bikpela DoD. Yu ken subim strong moa na i no gat wankain penalty. Long dispela as planti ol 'stetionary storage' projek i bin muv i go long LFP maski 'energy density' i no gutpela tumas.

Sait bilong anode i save kisim hevi long tupela arere bilong 'state of charge window'. Klostu long zero, yu pulim 'lithium' i kam aut long 'graphite' we i laik holim strong. SEI leia i bruk na senis. Olgeta taim em i senis, em i kaikaim moa 'lithium' na 'capacity' i go daun. Klostu 100%, moa yet long 'fast charge', yu inap long kisim 'plating'. Tupela samting i no gutpela long stap longpela taim.

Bagarap bilong 'cathode' i dipen long kemistri. NMC111 em i moa stebol long NMC811 long bikpela voltej, tasol NMC811 i givim yu eneji densiti. Ol 'high-nickel cathodes i laik lusim oksijen taim yu 'delithiate' ol i go abrusim wanpela mak. Dispela oksijen i save wok wantaim 'electrolyte' na kamapim hat. Yu mas mekim olsem na sel i go lapun hariap.

Stres bilong masin em i bikpela samting moa long planti manmeri i save tingim. Grafit i save kamap bikpela taim yu 'lithiate'. Ol silikon anod i save kamap bikpela moa yet. Deep cycling i min olsem bikpela senis long volium, moa hevi long ol 'electrode coating', moa sans long 'delamination' o 'particle cracking'. Sampela bilong ol nupela 'silicon-blend anodes' i gat hevi tru long dispela.

Depth of Discharge

Olgeta bateri menesmen sistem i gat ol 'min' na 'max' SoC setpoint. BMS bai no inap larim yu i go ausait long dispela windo. Wanem samting kastoma i kolim "0%" long displei bilong ol em ating 5% o 10% SoC tru. Samting ol i kolim "100%" ating em i 95%. Ol kampani i save wokim ol samting i save mekim olsem long kisim moa winmani.

Hevi em olsem, kapasiti i save pinis bihain long taim. Wanpela sel we i bin stat long 100 Ah i ken kamap long 85 Ah tripela yia bihain. Sapos BMS bilong yu i yusim yet 'capacity value' bilong pastaim, orait ol DoD kalkulesen bilong yu i no stret. Ol gutpela sistem i save senis senis long olgeta taim. Ol sistem we i no gat bikpela pe i no save.

Tempereja i tromoi narapela 'wrench' i kam insait. Wanpela sel long 0 digri inap long givim 60% tasol bilong 'rated capacity' bilong en maski yu traim long pulim 100% DoD. Lithium i no inap long muv hariap inap. Sampela sistem i save daunim mak bilong DoD otomatik taim ples i kol. Ol narapela i larim yu i traim na yu no inap.

Depth of Discharge

Long sait bilong grid stoa, 80% DoD em i gutpela standet. Yu kisim gutpela yutilisesen na yu no kilim ol sel. Ol aplikesen bilong bungim mani we i nidim planti taim long wanpela de i ken go inap long 70% long lukautim laip. Bekap pawa we i save stap nating planti taim inap long baim 90% o moa long ol liklik taim we ol i nidim.

Sola stoa long ol haus em i save stap long 80-90%. Tesla Powerwall i wok klostu long 100% yu ken yusim, tasol ol i yusim ol sel bilong ol yet na 'warranty math' bilong ol yet. Ol 'third-party integrators' i save laikim moa long lukautim ol samting.

Ol EV i stap long olgeta hap bilong mep. 0-100% we i stap long 'dashboard' bilong yu i no wankain olsem mak bilong ol sel. Ol kampani i save haitim kapasiti long tupela sait. Hamas i dipen long disain bilong 'pack' na hamas strongpela tingting bilong ol long 'warranty'.

Bikpela samting em olsem DoD em i wanpela disain jois, i no wanpela namba we i stap. Yu makim bihainim ekonomiks, risk tolerans, na aplikesen rikwaemen. Husat manmeri i tokim yu olsem i gat wanpela stretpela bekim bilong olgeta samting i no bin mekim inap wok.