Uyikhetha njani itshiphu yolawulo lokutshaja ibhetri

Umbhali : Iflowpower - UMboneleli weSikhululo saMandla esiphathwayo

Iimveliso ze-elektroniki, ngokukodwa iimveliso ze-elektroniki ezimele zithwalwe kunye nawe, ziya kusebenzisa iibhetri ze-lithium-ion eziza kuba ngulawulo lwamandla kwiibhetri ze-lithium-ion, eziza kubandakanya ukutshaja ibhetri ye-lithium-ion, ukukhutshwa, inkqubo yokuvavanya umbane. Uvavanyo lwehardware yamandla ebhetri. Siye sayila iimveliso ngenxa yokuba iimfuno zokuchaneka kombane webhetri aziphezulu, kwaye ii-ADCs zangaphakathi kwi-microcontroller zisetyenziswa, kwaye i-voltage yereferensi inika i-voltage kwi-microcontroller.

Ngokubanzi, i-3.3V isetyenziswa njenge-voltage yereferensi. Kuvavanyo lombane lwebhetri ye-lithium ion, kuba ibhetri ye-lithium ion ibhetri inokufikelela kwi-4.

I-2V, ukuba intlawulo yangaphandle i-5V okanye i-6V yombane, uluhlu olupheleleyo lwe-chip eyodwa yi-3.3V, ngoko ke i-resistors ezimbini zisetyenziselwa uchungechunge, i-microcomputer ye-chip enye I-voltage yokuqokelela i-voltage resistor end ibalwa ukubala ixabiso lombane webhetri ye-lithium ion kwi-progressive pressure ratio. Icandelo lokufumana isoftware ye-ADC, uqwalaselo ngalunye lwe-chip eyodwa luhlukile, ukuchaneka kuyahluka, apha kucingelwa ukubala i-formula, i-12-bit ADC iyonke i-4096th order, kucingelwa ukuba ukuchasana kokwahlula umbane kubini i-100K resistors, ukuba iqokelelwe Ixabiso le-ADC li-1234, ngoko ixabiso eliqokelelwe ngamaxesha angama-2 ngama-23. ukwahlula i-coefficients, kwaye emva koko ihlulwe ngamanyathelo angama-4096, ixabiso lombane li-3778mV.

Ifomula: I-voltage yebhetri = (Ixabiso lokuqokelelwa kwangoku * Ixabiso loxinzelelo * I-Voltge yeReferensi) / Ukuhanjiswa kwe-ADC. Ukukhetha itshiphu yolawulo lokutshajiswa kwebhetri eneneni kuhlawuliswe uphawu lwetshiphu, sihlala siqwalasela uzinzo lwechip, ukutshaja ubungakanani bangoku, ukutshajiswa koluhlu lwamandla ombane, kunye neendleko zetshiphu ekufuneka ziqwalaselwe ngokubanzi. Singasebenzisa i-SGM4056 ye-Holy Bang, ukuba umthamo webhetri awukho mkhulu, unokulawulwa ngaphakathi kwe-350mV, le chip inokubonelela ngokushaja izikhonkwane zempendulo eziphuphumayo.

Siyintoni isityholo kwi-single-chip microcomputer?. Isixhobo sokulawula i-microcomputer yesoftware ye-microcomputer yeebhetri ze-lithium ion iyakwazi ukwahlula, ukungahlawulisi, ukutshaja, ukutshaja. Zenza njani ezi bhetri zintathu zikhulu? Xa ibhetri ye-lithium ion ingahlawuliswa, inkqubo ye-chip eyodwa ayinayo ishaja yangaphandle, kwaye i-voltage eqokelelwe yi-microcontroller ayiyi kudlula i-4.

3V. Uluhlu ngaphakathi kombane wokunqunyulwa kwebhetri ~ 4.2V.

Xa intlawulo yangaphandle ihlawuliswa, uvavanyo lukhulu kune-4.3V, kunye nenkqubo yokutshaja. Inkqubo ye-chip eyodwa iphethe, kwaye xa inqanaba le-pin ye-pin yolawulo lokutshaja litshintsha, ukuba liba lizinga eliphezulu, lithetha ukuba ukutshaja kugcwele, kwaye uphawu lwengxelo yokutshaja ye-brand nganye ingaba yinto efanayo, nceda ubhekisele kwinkcazo ehambelanayo.

Ngethuba lokusetyenziswa okuqhelekileyo kwenkqubo yokukhupha, ukuqokelela kwamandla ombane kukwagwetywe, kwaye ukuchithwa okungaphezulu kwe-voltage ye-alert yonakalisa ibhetri okanye ukukhuselwa kwebhetri. Ngokubanzi, i-3.4V isetyenziswa njengexabiso le-threshold, elingaphantsi kwe-3.

I-4V yokuqalisa i-alamu yamandla ebhetri. Idatha kufuneka ikhethwe ngokudibanisa neempawu zemveliso. .