IsiZukulwana esilandelayo seLithium yeBattery Monitor: Uluphucula njani ukhuseleko lweebhetri ze-lithium ngelixa ukhulisa ukuchaneka kunye nokwandisa ixesha lokubaleka

2022/04/08

Umbhali :Iflowpower-UMboneleli weSikhululo saMandla esiphathwayo

Kwiminyaka yakutshanje, iimpahla ezisetyenziswa ngabathengi ezifana nezicoci, izixhobo zombane (ezifana neendawo zokubhola, iisarha kunye nezikrudrayiva) kunye nezixhobo zokusebenza egadini (ezinje ngomatshini wokucheba ingca, oomatshini bokucheba kunye neetrektara ze-turf) ziye zaguqulwa zasuswa kwintambo kunye nebhetri yokutshaja eqhutywa ngeentambo kunye nesixhobo sokutshaja. iibhetri ezinokutshajwa. Nokuba iibhayisekile zangaphambili ezingakhange zithathwe, ngoku zikwaguqula iibhayisekile zombane kunye nezithuthuthu zombane eziqhutywa yibhetri. Ezi pakethi zebhetri ngokuqhelekileyo zenziwe ngebhetri ye-lithium-ion enye, ibhetri ye-lithium polymer okanye ibhetri ye-ion ye-lithium-phosphate.

Ukuba ukusetyenziswa ngokungafanelekanga, kunokubangela ingozi, kubangele umlilo okanye ukuqhuma. Ukuqinisekisa usetyenziso olukhuselekileyo lwebhetri, isixhobo sombane esikwipakethi yebhetri siqwalasela ibhetri ukuba isebenzise ibhetri phantsi kweemeko ezichazwe ngumenzi webhetri. Le miqathango ibandakanya: • Ubuninzi obuvumelekileyo bombane wokutshaja.

· Ubuninzi bentlawulo kunye nokukhutshwa kwangoku. · Intlawulo ebonelelweyo kunye noluhlu lobushushu lokukhupha. Ngoko ke, iiparamitha eziphambili kwi-bettery pack zibalulekile, ngokukodwa kwi-bettery pack, okwangoku, kunye neqondo lokushisa, kuba ezi pharamitha zidlula umda, ukukhuselwa okufanelekileyo kuya kubangelwa.

Idatha yokulinganisa kufuneka ichanekile ukwenzela ukuba umyili enze isigqibo sokuba mingaphi imida ebandakanyiweyo kuyilo. Umzekelo, ukuba inkcazo yebhetri ilinganiselwe kwi-4.3V, ukuchaneka kwedatha yokulinganisa yi-± 50mV, umyili kufuneka alungise inkqubo ukukhubaza ukutshaja xa umbane wokubonakalisa umlinganiselo ungaphezulu kwe-4.

25V. Nangona kunjalo, ekubeni amandla ombane ebhetri angasezantsi njenge-4.2V, kule meko, ukutshaja kuya kuyeka ngaphambi kokuba ibhetri ihlawulwe ngokupheleleyo, okukhokelela kwinkcitho yomthamo wesicelo kunye nobomi bebhetri obufutshane.

I-monitor ephezulu yebhetri echanekileyo kunye nomkhuseli we-BQ76942 kunye ne-BQ76952 kunye nezinye iipakethi zebhetri zenzelwe ukusetyenziswa kwe-lithium ion, i-lithium polymers okanye iibhetri ze-lithium phosphate ion. Ezi zixhobo zixhasa iiseli ze-tandem ukusuka kwi-3s ukuya kwi-10s (BQ76942) kunye ne-16S (BQ76952), enokulinganisa umbane webhetri, okwangoku, kunye nobushushu, kwaye inokwabelana ngedatha kunye nezinye iisekethe, ezifana ne-microcontroller okanye ibhayisikili yombane ebhetri. ipakethe. Umlawuli wenkqubo.

I-BQ76942 kunye ne-BQ76952 ingaphinda isebenzise idatha ukuchukumisa ngokuzenzekelayo ukukhuselwa kwebhetri, ukukhubaza iipakethi zebhetri ukukhusela abavelisi abagqithisileyo ukuba baqhube, kwaye baphinde basebenzise iipakethi zebhetri xa iimeko zivumela, nokuba ngaba ukudibanisa nemikhosi okanye i-microcontrollers yenkqubo. Umzobo we-1 ubonisa umzobo webhloko we-BQ76952, odibanisa: • Umlinganiselo kunye nenkqubo engaphantsi yokukhangela umbane wokubeka iliso, okwangoku, kunye nobushushu bokubona xa iiparamitha zidlula umqobo ovumelekileyo. · Qhuba iFET yokhuseleko lwangaphandle kunye nekhemikhali fuse.

· Inkqubo ephantsi yojongano lwedijithali, ukongeza kulawulo lwephini lokukhetha umsebenzi, ikwaxhasa imigangatho yonxibelelwano olulandelelanayo. · Izilawuli zombane ezininzi, enye yeyokujikeleza kwangaphakathi, ezimbini zokusetyenziswa ngaphandle. Umzobo 1: Ibhokisi lomzobo 1 Umfanekiso we-2 umzobo we-2 ubonisa i-schematic elula ye-16S ibhetri yepakethe esekelwe kwi-BQ76952, usebenzisa i-I2C kunye nonxibelelwano oluphambili lwe-microcontroller.

Umlawuli odibeneyo ngumlawuli omncinci kunye ne-transceiver yangaphandle yokubonelela ngomzila kaloliwe. · Umbane ohlukeneyo webhetri enye kunye nokukhethwa kombane ongezelelweyo wenkqubo. · Ibhetri iseti yangoku kunye nentlawulo yokupasa (ubalo lwe-coulomb).

· Ukufa kwangaphakathi kunye ne-9 yangaphandle yokufunda ubushushu be-thermistor. Umzobo 2: I-subsystem yokulinganisa kwi-BQ76952 kunye ne-subsystem yokulinganisa kwi-BQ76942 kunye ne-BQ76952 idibanisa i-voltages eyahlukeneyo, yangoku kunye nobushushu kwi-pack yebhetri. Ekubeni umlinganiselo ngamnye unemfuno ethile, le milinganiso ifunyanwa ngeendlela ezahlukeneyo.

Umzekelo, iqondo lobushushu litshintsha kancinane, ngoko ke umlinganiselo kunye nokubala kunokwenziwa kancinci. Nangona kunjalo, imisinga yokupakisha ibhetri inokuba nemisebenzi emfutshane yokubetha, ukuba ayiqhubeki nokuthatha iisampulu, inokuphosakela. I-Voltage yoNyango kunye neNkundla yokuBambisana ne-ADC eveliswe ukubonelela ngedatha yokulinganisa, esetyenziswa ngaphakathi kwesixhobo kwaye inokufikelela kwiprosesa eyahlukileyo, isixhobo samandla, okanye isilawuli senkqubo kwipakethi yebhetri.

Ezi datha ziquka: • Umbane ohlukeneyo kunye nokukhethwa kweevoltheji ezongezelelweyo zesixokelelwano. · Ibhetri iseti yangoku kunye nentlawulo yokupasa (ubalo lwe-coulomb). · Ukufa kwangaphakathi kunye ne-9 yangaphandle yokufunda ubushushu be-thermistor.

Izikhonkwane ezixhasa imilinganiselo yangaphandle ye-thermistor nazo zingasetyenziselwa igalelo le-ADC jikelele, inkxaso engekho ngaphezu kwe- ~ 1.8V igalelo lombane. I-voltage ADC isebenza kwi-loop yokulinganisa kwaye ifaka i-multiplexing yexesha elithile phakathi kwamagalelo amaninzi.

I-subsystem yokulinganisa ye-BQ76942 kunye ne-BQ76952 ibandakanya iinketho ezininzi ezicwangcisiweyo, ezinokuphuculwa kunye norhwebo phakathi kwesantya sokulinganisa kunye nokuchaneka. Njengoko iimpahla zabathengi ezisebenza ngebhetri zisanda, ziqinisekisa ukuba zisebenza kumbane okhuselekileyo, okhoyo kunye nomgangatho wobushushu. Ukujongwa kwebhetri kunye nemisebenzi edibeneyo kunokunceda iinjineli zokuyila ukusombulula le miba mithathu ibalulekileyo ngelixa uphucula ukuchaneka.

Ngolwazi oluthe kratya malunga nokusebenzisa i-TI esweni ibhetri, nceda ujonge ezinye izibonelelo ezingezantsi.

QHAGAMSHELANA NATHI
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