Izixhobo zebhetri yeLithium zineempawu ezithile ezithintela ukuba zingatshajiswa kakhulu, zigqithise kakhulu-ikhululiwe, ngaphezulu-umbane, ujikeleziswa kancinci, kwaye utshajwa kwaye ukhutshwe kumaqondo obushushu aphezulu kakhulu naphantsi. Ke ngoko, ibhetri ye-lithium iya kuhlala ihamba ne-BMS ethambileyo. I-BMS ibhekisa kwiInkqubo yoLawulo lweBhetriibhetri. Inkqubo yolawulo, ekwabizwa ngokuba yibhodi yokukhusela.
Umsebenzi we-BMS
(1) Ukuqonda kunye nokulinganisa Ukulinganisa kukuva imeko yebhetri
Lo ngumsebenzi osisiseko weI-BMS, kuquka ukulinganiswa nokubalwa kwezinye iiparameter zesalathisi, kuquka i-voltage, i-current, i-temperature, amandla, i-SOC (imeko yetshaja), i-SOH (imeko yempilo), i-SOP (imeko yamandla), i-SOE (imeko ye amandla).
I-SOC ingaqondwa ngokubanzi njengobungakanani bamandla aseleyo ebhetrini, kwaye ixabiso layo liphakathi kwe-0-100%. Le yeyona parameter ibalulekileyo kwi-BMS; i-SOH ibhekisa kwimeko yempilo yebhetri (okanye inqanaba lokuwohloka kwebhetri), eliyimitha yokwenyani yebhetri yangoku. Xa kuthelekiswa nomthamo olinganisiweyo, xa i-SOH ingaphantsi kwe-80%, ibhetri ayinakusetyenziswa kwindawo yamandla.
(2) I-alamu kunye nokhuseleko
Xa kukho into engaqhelekanga kwibhetri, i-BMS ingalumkisa iqonga ukuba likhusele ibhetri kwaye ithathe amanyathelo afanelekileyo. Kwangaxeshanye, ulwazi olungaqhelekanga lwe-alamu luya kuthunyelwa kwiqonga lokubeka esweni nokulawula kwaye luvelise amanqanaba ahlukeneyo olwazi lwe-alamu.
Umzekelo, xa ubushushu bushushu kakhulu, i-BMS iya kuyinqamla ngokuthe ngqo isekethe yokutshaja nokukhupha, yenze ukhuseleko lobushushu obugqithisileyo, ize ithumele i-alamu ngasemva.
Iibhetri zeLithium ziza kukhupha izilumkiso ikakhulu kwezi ngxaki zilandelayo:
Ukutshaja ngaphezulu: iyunithi enye ngaphezulu-i-voltage, i-voltage iyonke ingaphezulu-i-voltage, itshaja ngaphezulu-umsinga;
Ukukhupha igesi ngaphezulu: iyunithi enye phantsi-i-voltage, i-voltage iyonke phantsi-i-voltage, ukukhupha ngaphezulu-umsinga;
Ubushushu: Ubushushu bebhetri buphezulu kakhulu, ubushushu be-ambient buphezulu kakhulu, ubushushu beMOS buphezulu kakhulu, ubushushu bebhetri buphantsi kakhulu, kwaye ubushushu be-ambient buphantsi kakhulu;
Imeko: ukuntywiliselwa emanzini, ukungqubana, ukuguqulwa, njl.
(3) Ulawulo olulinganiselayo
Imfuneko yokubaulawulo olulinganiselekileyokuvela ekungahambelani kwemveliso nokusetyenziswa kwebhetri.
Ngokwembono yemveliso, ibhetri nganye inomjikelo wayo wobomi kunye neempawu zayo. Akukho bhetri zimbini zifana ncamashi. Ngenxa yokungangqinelani kwii-separator, ii-cathodes, ii-anodes kunye nezinye izinto, amandla eebhetri ezahlukeneyo awakwazi ukuhambelana ngokupheleleyo. Umzekelo, izalathisi zokungaguquguquki komahluko we-voltage, ukumelana kwangaphakathi, njl. zeseli nganye yebhetri eyenza i-48V/20AH battery pack ziyahluka ngaphakathi koluhlu oluthile.
Ngokwembono yokusetyenziswa, inkqubo yokusabela kwe-electrochemical ayinakuze ihambelane ngexesha lokutshaja nokukhupha ibhetri. Nokuba yipakethi yebhetri efanayo, ukutshaja kwebhetri kunye nomthamo wokukhupha kuya kwahluka ngenxa yobushushu obahlukeneyo kunye namanqanaba okungqubana, nto leyo ebangela ukuba amandla eeseli zebhetri angahambelani.
Ngoko ke, ibhetri ifuna zombini i-passive balancing kunye ne-active balancing. Oko kukuseta i-pair of thresholds zokuqala kunye nokuphelisa i-equalization: umzekelo, kwiqela leebhetri, i-equalization iqalwa xa umahluko phakathi kwexabiso eligqithisileyo le-voltage yeseli kunye ne-voltage ephakathi yeqela ifikelela kwi-50mV, kwaye i-equalization iphela kwi-5mV.
(4) Unxibelelwano kunye nokubeka izinto kwindawo yazo
I-BMS inendlela eyahlukileyoimodyuli yonxibelelwano, enoxanduva lokudlulisa idatha kunye nokubeka ibhetri kwindawo yayo. Ingadlulisela idatha efanelekileyo eviweyo nelinganisiweyo kwiqonga lolawulo lokusebenza ngexesha langempela.
Ixesha lokuthumela: Novemba-07-2023
