Wanem em 'discharge performance'?
Pefomens bilong discharge
Self-discharge
Self-discharge i makim samting we i save kamap we strong bilong bateri i save go daun hariap bikos long ol kemikel riaksen insait long bateri we i kamap nating o i no kamap long tingting. Em i save kamap long ol 'spontaneous redox reactions' insait long ol samting bilong 'electrode'. Long tupela 'electrode', 'negative electrode' i save kisim bikpela 'self-discharge, we i save bagarapim ol 'active material'. Bateri self-discharge i klostu long ol kondisen bilong putim bateri.
Self-discharge rate
Self-discharge rate i makim mak we wanpela bateri i lusim kapasiti taim em i discharge em yet aninit long no-load kondisen taim em i stap long stoa. Ol i soim 'self-discharge rate olsem wanpela pesen bilong 'battery capacity reduction' long wanwan yunit taim (mun o yia).
Insait long fomula, Ahₐ i makim kapasiti bilong bateri long taim bilong putim (A·h);
Ah_b i makim mak bilong bateri bihain long ol i putim (A·h);
t i makim taim bilong putim bateri (ol mun o yia).
Self-discharge rate i save kamap long taim na temperaja bilong ples. Taim tempereja bilong ples i go antap, dispela i save kamapim bikpela 'self-discharge phenomenon. Olsem na, ol i mas sasim ol bateri long olgeta taim taim ol i putim longpela taim na putim aninit long gutpela tempereja na humiditi kondisen.
Dip bilong Discharge
Dip bilong 'Discharge' (DOD) em i pesen bilong 'discharge capacity' i go long 'rated capacity', na 'mathematical relationship' bilong en wantaim 'State of Charge' (SOC) em i olsem:
DOD=1-S0C
Dip bilong discharge i gat bikpela impak long laipspan bilong wanpela sekenderi bateri. Planti taim, sapos 'discharge depth' bilong wanpela 'secondary battery' i go daun moa, laipspan bilong en i sotpela moa. Olsem na, ol i mas abrusim 'deep discharge' bilong ol 'secondary battery' taim ol i yusim bateri.
Discharge regime
Dispela 'discharge regime' i makim ol kain kain samting we i save kamap taim bateri i 'discharge', moa yet em 'discharge rate' (karent), 'termination voltage', na tempereja.
(1) Discharge current Discharge current i makim bikpela bilong 'current' taim bateri i lus. Bikpela bilong discharge current i save afektim stret ol kain kain pefomens indiketa bilong bateri. Olsem na, taim ol i kamapim kapasiti o eneji bilong bateri, ol i mas tokaut long bikpela bilong 'discharge current' na ol 'discharge' kondisen. Ol i save kolim 'discharge current' olsem 'discharge rate', we i makim 'rate' we bateri i save 'discharge'. Em i ken kamap long tupela kain: taim reit na multiplaia reit.
Taim reit em i 'discharge rate' we ol i soim long taim bilong 'discharge' (h), em taim (h) we i mas kamap long 'discharge' bilong 'rated capacity' long wanpela 'discharge current'. Planti taim ol i save kolim olsem C/n, we C em i 'rated capacity' na n em i 'certain discharge current'. Taim reit em ol i kolim tu olsem reit bilong aua. Olsem, sapos 'rated capacity' bilong wanpela bateri em 50A·h, na em i 'discharge' long 5A, orait taim reit em 50A·h/5A=10h, na ol i tok bateri i 'discharge' long 10-aua reit. Olsem yumi ken lukim long rot bilong kalkulesen, sotpela taim we 'discharge rate' i makim, bikpela 'discharge current' i nidim; long narapela sait, longpela taim we 'discharge rate' i makim, liklik 'discharge current' i nidim.
Discharge rate i makim 'current' autput bilong bateri taim em i rausim 'rated capacity' bilong en insait long wanpela taim. Em i wankain olsem namba bilong namba bilong 'rated capacity'. Olsem, 3C 'discharge rate' i min olsem 'discharge current' i tripela taim moa long 'rated capacity'. Sapos bateri kapasiti em 15A·h, orait 'discharge current' i mas...
Long pasin bilong bipo, ol 'discharge rate' aninit long 1/3C em i liklik-reit, 1/3C i go long 3C em i namel-reit, na antap long 3C em i bikpela-reit.
(2) Discharge Termination Discharge termination voltage em i stret wantaim ol samting bilong bateri na em i save kamap long kain kain samting olsem straksa bilong bateri, discharge rate, na temperaja bilong ples. Planti taim, long taim bilong liklik -temperature, bikpela -karent discharge, polarisasen bilong ol 'electrode' i antap, ol samting i wok i no inap long yusim gut, na 'battery voltage' i save go daun hariap. Olsem na, ol i ken makim 'termination voltage' i go daun long taim bilong 'low-temperature' o 'high-current (high-rate) 'discharge'. Long taim bilong liklik -karent discharge, polarisasen bilong 'electrode' i liklik, ol 'active materials' inap long yusim gut, na 'termination voltage' inap long kamap bikpela moa.
Antap long ol bikpela pefomens indiketa antap, bateri i mas i no gat -toksik, i no ken kamapim polusen o korosen long envairomen i stap klostu, i mas seif long yusim, i gat gutpela pefomens bilong sasim na isi long sasim, i no inap long guria, i no gat memori efek, i no inap pilim senis long temperaja bilong ples, na i mas isi long stretim na lukautim.
