Chiyambi:
Tchipisi zokhudzana ndi mphamvu nthawi zonse zakhala gulu lazinthu zomwe zalandilidwa kwambiri. Tchipisi zoteteza mabatire ndi mtundu wa tchipisi togwirizana ndi mphamvu zomwe zimagwiritsidwa ntchito kuzindikira zolakwika zosiyanasiyana mu cell imodzi ndi mabatire a cell angapo. M'machitidwe amakono a batri, makhalidwe a mabatire a lithiamu-ion ndi abwino kwambiri pamagetsi apakompyuta, komamabatire a lithiamukuyenera kugwira ntchito mkati mwa malire omwe adavotera, kuyang'ana pa magwiridwe antchito ndi chitetezo. Chifukwa chake, kutetezedwa kwa mapaketi a batri a lithiamu-ion ndikofunikira komanso kofunikira. Kugwiritsa ntchito ntchito zosiyanasiyana zoteteza batire ndikupewa kuchitika kwa zolakwika monga kutulutsa OCD yopitilira muyeso ndi kutenthedwa kwa OT, komanso kupititsa patsogolo chitetezo cha mapaketi a batri.
Dongosolo loyang'anira batri limayambitsa ukadaulo wowongolera
Choyamba, tiyeni tikambirane za vuto ambiri batire mapaketi, kugwirizana. Pambuyo pa maselo amodzi kupanga paketi ya lithiamu batire, kuthawa kwamafuta ndi zolakwika zosiyanasiyana zimatha kuchitika. Ili ndiye vuto lomwe limabwera chifukwa cha kusagwirizana kwa paketi ya batri ya lithiamu. Maselo amodzi omwe amapanga lifiyamu batire paketi ndi zosagwirizana mu mphamvu, kulipiritsa, ndi kutulutsa magawo, ndipo "mgolo wa mbiya" umapangitsa kuti maselo amodzi omwe ali ndi katundu woipitsitsa akhudze magwiridwe antchito onse a paketi ya batire ya lithiamu.
Lifiyamu batire kusanja teknoloji imadziwika ngati njira yabwino yothetsera kusasinthika kwa mapaketi a batri a lithiamu. Kusanja ndikusintha mphamvu yamagetsi yanthawi yeniyeni ya mabatire amphamvu zosiyanasiyana posintha mphamvu ya bancini. Kuthekera kolinganiza kolimba, kumapangitsanso mphamvu yoletsa kufalikira kwa kusiyana kwamagetsi ndikuletsa kuthamanga kwamafuta, komanso kusinthasintha kwamagetsilithiamu batire paketi.
Izi ndizosiyana ndi chitetezo chosavuta chokhazikika pa hardware. Chitetezo cha batri la lithiamu chikhoza kukhala chotetezera chowonjezera kwambiri kapena chitetezero chapamwamba chomwe chimatha kuyankha pakuwonongeka, kutentha kwa kutentha kapena vuto lamakono. Nthawi zambiri, kasamalidwe ka batri IC pamlingo wa lifiyamu batire monira ndi gauge yamafuta imatha kupereka ntchito yofananira ya batire ya lithiamu. Lifiyamu batire yowunikira imapereka ntchito yofananira ya batri ya lithiamu komanso imaphatikizanso ntchito yoteteza IC yokhala ndi kusinthika kwakukulu. Mafuta owerengera ali ndi digiri yapamwamba yophatikizira, kuphatikiza ntchito ya batire ya lithiamu yowunikira, ndikuphatikiza ma aligorivimu apamwamba owunikira pamaziko ake.
Komabe, ma IC ena oteteza batire a lithiamu tsopano akuphatikizanso ntchito zofananira za batri ya lithiamu kudzera mu ma FET ophatikizika, omwe amatha kutulutsa mabatire okhala ndi mphamvu yamagetsi nthawi yonse yochapira ndikusunga mabatire otsika kwambiri motsatizana, potero kugwirizanitsalithiamu batire paketi. Kuphatikiza pakugwiritsa ntchito mphamvu zonse zamagetsi, ntchito zamakono komanso zoteteza kutentha, ma IC achitetezo a batri ayambanso kuyambitsa ntchito zofananira kuti zikwaniritse zofunikira zachitetezo cha mabatire angapo.
Kuchokera kuchitetezo choyambirira kupita kuchitetezo chachiwiri
Kuchokera kuchitetezo choyambirira kupita kuchitetezo chachiwiri
Chitetezo chofunikira kwambiri ndi chitetezo cha overvoltage. Ma IC onse achitetezo a batri a lithiamu amapereka chitetezo chochulukirapo malinga ndi magawo osiyanasiyana achitetezo. Pazifukwa izi, zina zimapereka chitetezo champhamvu kwambiri komanso chitetezo chamagetsi, ndipo zina zimapereka chitetezo chochulukirapo komanso chitetezo chowonjezera pakuwotcha. Kwa mapaketi ena apamwamba a lithiamu batire, chitetezo ichi sichikwaniranso kukwaniritsa zosowa za batire ya lithiamu paketi. Panthawiyi, IC yoteteza batire ya lithiamu yokhala ndi lithiamu batire yodziyimira payokha ndiyofunika.
Chitetezo cha IC ndi cha chitetezo choyambirira, chomwe chimayang'anira kulipiritsa ndikutulutsa ma FET kuti ayankhe kumitundu yosiyanasiyana yachitetezo cholakwa. Kulinganiza uku kumatha kuthetsa vuto la kutha kwa matenthedwelithiamu batire paketichabwino. Kuchuluka kwa kutentha mu batri imodzi ya lithiamu kungayambitse kuwonongeka kwa lithiamu batire pack balance switch ndi resistors. Lifiyamu batire kulinganiza amalola aliyense wopanda chilema lithiamu batire mu lithiamu batire paketi kukhala bwino ndi ofanana mphamvu monga mabatire ena opanda pake, kuchepetsa chiwopsezo cha matenthedwe kuthawa.
Pakalipano, pali njira ziwiri zokwaniritsira kulinganiza kwa batri la lithiamu: kusinthasintha kogwira ntchito ndi kusinthasintha kosasintha. Kusamutsa mphamvu ndi kusamutsa mphamvu kapena kuchajisa mabatire amphamvu kwambiri/okwera-SOC kupita ku mabatire otsika kwambiri a SOC. Passive balancing ndikugwiritsa ntchito zoletsa kugwiritsa ntchito mphamvu zamabatire othamanga kwambiri kapena othamanga kwambiri kuti akwaniritse cholinga chochepetsa kusiyana pakati pa mabatire osiyanasiyana. Kusawerengeka kopanda mphamvu kumakhala ndi mphamvu zambiri komanso chiwopsezo cha kutentha. Poyerekeza, kulinganiza mwachangu kumakhala kothandiza kwambiri, koma ma aligorivimu owongolera ndizovuta kwambiri.
Kuchokera pachitetezo choyambirira kupita kuchitetezo chachiwiri, makina a batri a lithiamu amayenera kukhala ndi chowunikira batire la lithiamu kapena chowunikira mafuta kuti akwaniritse chitetezo chachiwiri. Ngakhale chitetezo choyambirira chimatha kugwiritsa ntchito ma aligorivimu anzeru owongolera batire popanda kuwongolera kwa MCU, chitetezo chachiwiri chimafunikira kutumiza magetsi a lithiamu batire ndi apano ku MCU popanga zisankho pamadongosolo. zowunikira batire za lithiamu kapena ma gauge amafuta amakhala ndi ntchito zofananira za batri.
Mapeto
Kupatula zounikira mabatire kapena zoyezera mafuta zomwe zimapereka ntchito yoyendera mabatire, ma IC oteteza omwe amapereka chitetezo choyambirira sakhalanso ndi chitetezo chofunikira monga kuphulika kwambiri. Ndi kuchuluka kwa ma cell ambirimabatire a lithiamu, mapaketi a batri okhala ndi mphamvu zazikulu adzakhala ndi zofunikira zapamwamba komanso zapamwamba zoteteza ma IC, ndipo kuyambitsa ntchito zofananira ndikofunikira kwambiri.
Kusamalitsa kumakhala ngati kukonza. Kulipiritsa kulikonse ndi kutulutsa kudzakhala ndi chipukuta misozi pang'ono kuti athetse kusiyana pakati pa mabatire. Komabe, ngati batire cell kapena batire paketi palokha ali ndi vuto khalidwe, chitetezo ndi kusanja sangasinthe khalidwe la batire paketi, ndipo si kiyi wapadziko lonse.
Ngati muli ndi mafunso kapena mukufuna kudziwa zambiri, musazengereze kuterokufikira kwa ife.
Pempho la Mawu:
Jacqueline:jacqueline@heltec-bms.com/ +86 185 8375 6538
Sucre:sucre@heltec-bms.com/ +86 136 8844 2313
Nancy:nancy@heltec-bms.com/ +86 184 8223 7713
Nthawi yotumiza: Oct-21-2024