Amabhethri afika ngamakhemistri nezinhlobo eziningi ezahlukene, okubili okubili okudume kakhulu okungashajwa kabusha ibhethri le-Li-ion (lithium-ion) nebhethri le-NiMH (nickel-metal hydride).Ngenkathi babelana ngezici ezifanayo, ibhethri ye-Li-ion nebhethri ye-NiMH inomehluko omningi obenza bafanelekele izinhlelo zokusebenza ezahlukene.Ukuqonda lo mehluko kungakusiza ukuthi ukhethe ubuchwepheshe obufanele bebhethri.
Ukuminyana kwamandla: Isici esibalulekile ekukhetheni ibhethri ukuminyana kwamandla, kukalwa ngamahora we-watt ngekhilogremu (Wh/kg).Amabhethri e-lithium anikeza ukuminyana kwamandla okuphezulu kakhulu kunamabhethri e-NiMH.Isibonelo, ibhethri le-lithium-ion elijwayelekile lihlinzeka cishe ngo-150-250 Wh/kg, uma kuqhathaniswa cishe no-60-120 Wh/kg we-NiMH.Lokhu kusho ukuthi amabhethri e-lithium angapakisha amandla engeziwe endaweni elula nencane.Lokhu kwenza amabhethri e-lithium alungele ukunika amandla ama-compact electronics noma izimoto zikagesi.Amabhethri e-NiMH makhulu kodwa asasebenziseka ezinhlelweni lapho usayizi omncane ungabalulekile khona.
Ikhono lokushaja: Ngaphezu kokuminyana kwamandla okuphezulu, amabhethri e-lithium-ion aphinde anikeze umthamo wokushaja omkhulu kunamabhethri e-NiMH, ngokuvamile alinganiselwe ku-1500-3000 mAh nge-lithium vs. 1000-3000 mAh ye-NiMH.Umthamo wokushaja ophakeme usho ukuthi amabhethri e-lithium anganika amandla amadivayisi isikhathi eside ngokushajwa okukodwa uma kuqhathaniswa ne-NiMH.Kodwa-ke, amabhethri e-NiMH asahlinzeka ngezikhathi ezinde ezanele zokusebenzisa ama-electronics amaningi namathuluzi wamandla.
Izindleko: Mayelana nezindleko zangaphambili, amabhethri e-NiMH ngokuvamile ashibhile kunamabhethri e-lithium-ion.Kodwa-ke, amabhethri e-lithium anomthamo omkhulu wamandla, ngakho udinga amaseli e-lithium ambalwa ukuze unike amandla idivayisi, okunciphisa izindleko.Amabhethri e-lithium nawo aphila isikhathi eside, amanye agcina kufika ku-80% womthamo wawo ngemva kwemijikelezo yokushaja engu-500.Amabhethri e-NiMH ngokuvamile ahlala kuphela imijikelezo engu-200-300 ngaphambi kokuba ehle aze afike kumthamo ongu-70%.Ngakho-ke, nakuba i-NiMH ingase ibe nezindleko zokuqala eziphansi, i-lithium ingaba nezindleko ezithe xaxa ngokuhamba kwesikhathi.
Iyashaja: Umehluko obalulekile ekushajweni kwalezi zinhlobo ezimbili zamabhethri ukuthi amabhethri e-lithium-ion anomphumela wenkumbulo omncane ongashajeki, ngokungafani namabhethri e-NiMH.Lokhu kusho ukuthi amabhethri e-lithium angashajwa kancane futhi ashajwe izikhathi eziningi ngaphandle kokuphazamisa ukusebenza noma impilo yebhethri.Nge-NiMH, kungcono ukuyikhipha ngokugcwele futhi uphinde ushaje ibhethri ukuze ugweme ukushaja inkumbulo, enganciphisa umthamo ngokuhamba kwesikhathi.Amabhethri e-lithium nawo avamise ukushaja ngokushesha, ngokuvamile emahoreni angu-2 ukuya kwangu-5, uma kuqhathaniswa namahora angu-3 kuya kwangu-7 kumabhethri amaningi e-NiMH.
Umthelela Wezemvelo: Mayelana nobungane bemvelo, i-NiMH inezinzuzo ezithile ngaphezu kwe-lithium.Amabhethri e-NiMH aqukethe izinto ezinobuthi obuncane kuphela futhi awekho izinsimbi ezisindayo, okuwenza angabi yingozi emvelweni.Ziphinde zigaywe kabusha ngokugcwele.Ngakolunye uhlangothi, amabhethri e-lithium aqukethe izinsimbi ezinzima ezinobuthi njenge-lithium metal, i-cobalt, nezinhlanganisela ze-nickel, abeka engcupheni yokuqhuma uma eshiswa ngokweqile, futhi okwamanje anezinketho ezilinganiselwe zokugaywa kabusha.Kodwa-ke, amabhethri e-lithium aya esimeme kakhulu njengoba kuvela ubuchwepheshe obusha bebhethri.
Isikhathi sokuthumela: Apr-22-2023
