Indlela yokulinganisa intlawulo esebenzayo

I-Automotive Systems Engineering Department yaseMunich-based Infineon Technologies kutshanje ifumene umsebenzi wokuphuhlisa izithuthi zombane. Isithuthi sombane sisithuthi esiqhutywayo, esibaluleke kakhulu ekuboniseni ukusebenza kombane kwizithuthi zombane ezixutyiweyo. Imoto iya kunikwa amandla yibhetri ye-lithium enkulu, kwaye abaphuhlisi bayaqonda ukuba ibhetri elinganayo iyimfuneko. Kule meko, kufuneka ukhethe ukuhanjiswa kwamandla okuzenzekelayo phakathi kweebhetri endaweni yendlela yokulinganisa intlawulo yendabuko. Inkqubo yokulinganisa i-self-charge abayiphuhlisayo inokubonelela ngemisebenzi ephezulu ngexabiso elifanayo njengesicwangciso esisinyanzelo.

Ubume bebhetri

Iibhetri ze-Ni-Cd kunye ne-Ni-MH ziye zalawula imarike yebhetri iminyaka emininzi. Nangona ibhetri ye-lithium ye-18650 iyimveliso esandula ukungena kwimarike, isabelo sayo semarike sikhula ngokukhawuleza ngenxa yophuculo olukhulu ekusebenzeni. Umthamo wokugcina iibhetri ze-lithium uyamangalisa, kodwa nangona kunjalo, amandla ebhetri enye ayanelanga kumbane okanye okwangoku ukuhlangabezana neemfuno ze-injini ye-hybrid. Iibhetri ezininzi zinokudityaniswa ngokunxuseneyo ukonyusa amandla ebhetri okwangoku, kwaye iibhetri ezininzi zinokudityaniswa kuthotho ukunyusa amandla ombane ebhetri.

Abahlanganisi bebhetri bahlala besebenzisa amagama ashunqulelweyo ukuchaza iimveliso zabo zebhetri, ezinje nge-3P50S, okuthetha ukuba ipakethi yebhetri eyenziwe ngeebhetri ezi-3 ezihambelanayo kunye neebhetri ezingama-50 kuthotho.

Isakhiwo semodyuli sikulungele ukuphatha iibhetri, kubandakanywa uluhlu oluninzi lweeseli zebhetri. Umzekelo, kuluhlu lwebhetri ye-3P12S, zonke iiseli zebhetri ezili-12 ziqhagamshelwe kuthotho ukwenza ibhloko. Ezi bhetri zinokulawulwa kwaye zilungelelaniswe yisekethe ye-elektroniki esekelwe kwi-microcontroller.

Umbane ophumayo wemodyuli yebhetri uxhomekeke kwinani leebhetri eziqhagamshelwe kuthotho kunye nombane webhetri nganye. I-voltage yebhetri ye-lithium iphakathi kwe-3.3V kunye ne-3.6V, ngoko i-voltage yemodyuli yebhetri iphakathi kwe-30V kunye ne-45V.

Amandla adibeneyo anikwa amandla ombane angama-450 volt DC. Ukuze uhlawule utshintsho kwi-voltage yebhetri kunye nemo yentlawulo, kuyafaneleka ukudibanisa i-DC-DC converter phakathi kwebhetri yepakethe kunye ne-injini. Isiguquli sikwanciphisa imveliso yangoku yebhetri.

Ukuqinisekisa ukuba i-DC-DC converter isebenza ngeyona meko ilungileyo, amandla ombane ebhetri kufuneka abe phakathi kwe-150V ~ 300V. Ke ngoko, iimodyuli zebhetri ezi-5 ukuya kwezi-8 ziyafuneka kuthotho.

imfuneko yokulinganisela

Xa i-voltage idlula umda ovumelekileyo, ibhetri ye-lithium yonakaliswa lula (njengoko kuboniswe kuMfanekiso 2). Xa i-voltage idlula imida ephezulu nangaphantsi (i-2V ye-nano-phosphate ibhetri ye-lithium, i-3.6V kumda ophezulu), ibhetri inokonakala ngokungenakulungiswa. Ngenxa yoko, ubuncinci ukuzikhupha kwebhetri kukhawuleza. I-voltage ephumayo yebhetri izinzile kuluhlu olubanzi lwentlawulo (SOC), kwaye akukho phantse umngcipheko wombane ogqithisa umgangatho ngaphakathi koluhlu olukhuselekileyo. Kodwa kuzo zozibini iziphelo zoluhlu olukhuselekileyo, igophe lokutshaja liphezulu. Ngoko ke, njengomlinganiselo wokuthintela, kuyimfuneko ukubeka iliso ngokusondeleyo i-voltage.

Ukuba i-voltage ifikelela kwixabiso elibalulekileyo, inkqubo yokukhupha okanye yokutshaja kufuneka imiswe ngokukhawuleza. Ngoncedo lwesekethe yokulinganisela eyomeleleyo, i-voltage yebhetri echaphazelekayo inokubuyiselwa kwisikali esikhuselekileyo. Kodwa ukwenza oku, isekethe kufuneka ikwazi ukuhambisa amandla phakathi kweeseli xa i-voltage yayo nayiphi na iseli iqala ukwahluka kumbane wezinye iiseli.

indlela yokulinganisa intlawulo

1. Isinyanzelo seSintu: Kwinkqubo yokuphatha ibhetri eqhelekileyo, ibhetri nganye iqhagamshelwe kwisixhasi somthwalo ngokutshintsha. Le sekethe enyanzelwayo inokukhupha iibhetri ezikhethiweyo zodwa. Nangona kunjalo, le ndlela inokutshajwa kuphela ukucinezela ukunyuka kombane kweyona bhetri inamandla. Ukuze unciphise ukusetyenziswa kwamandla, isiphaluka ngokuqhelekileyo sivumela kuphela ukukhutshwa kumbane omncinci we-100 mA, okukhokelela kwibhalansi yentlawulo ethatha iiyure eziliqela.

2. Indlela yokulinganisa ngokuzenzekelayo: Kukho iindlela ezininzi zokulinganisa ngokuzenzekelayo ezinxulumene nezixhobo, zonke ezifuna into yokugcina amandla ukuthwala amandla. Ukuba i-capacitor isetyenziswe njengento yokugcina, ukuyidibanisa kuyo nayiphi na ibhetri idinga uluhlu olukhulu lokutshintsha. Eyona ndlela isebenzayo kukugcina amandla kwimagnethi. Icandelo eliphambili kwisekethe yi-transformer. Iprototype yaphuhliswa liqela lophuhliso lwe-Infineon ngokubambisana neVogt Electronic Components Co., Ltd. Imisebenzi yayo imi ngolu hlobo lulandelayo:

A. Ukudlulisa amandla phakathi kweebhetri

Xhuma i-voltage yeeseli ezininzi kwisiseko sombane wegalelo le-ADC

Isekethe isebenzisa umgaqo we-reverse scan transformer. Le transformer inokugcina amandla kwindawo yamagnetic.