Backup lithium bhatiri nekunonoka

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Mea Hoolako Uku Uku

Ichi chinyorwa chekushandisa chinotsanangura iyo huru magetsi uye bhatiri rekuchengetedza kuburikidza ne diode "kana" logic yedunhu uye mutoro wekubatanidza. Iyi dhizaini iri nyore kunzwisisa, asi kana bhatiri voltage ichipfuura iyo huru yekugovera voltage, iyo diode "kana" logic yedunhu ichabatanidza bhatiri, uye iyo huru magetsi haigone kusarudzwa zvine musoro. Ichi chinyorwa chinopa nzira yekugadzirisa dambudziko iri.

MAX931 muenzanisi, muenzanisi wakavakirwa-mukati 2% base. Simba guru uye mabhatiri akasarudzika akabatana kurodha kuburikidza neiyo diode yakapusa "kana" logic yedunhu. Nekudaro, kana bhatiri vheji yakadarika iyo huru magetsi ekupa magetsi, iyo diode "kana" logic yedunhu inopa simba bhatiri, uye haigone kusarudza zvine musoro magetsi makuru.

Mufananidzo 1 unopiwa nzira yekugadzirisa dambudziko iri, mhepo yemagetsi yemagetsi makuru ekushandura magetsi ndeye 7V kusvika ku30V, simba rinosara ndiro 9V bhatiri. Mufananidzo 1.IC1MAX931 comparator inoshandiswa kutarisa huru magetsi ekupa magetsi.

Kana iyo huru yemagetsi inodonha pazasi 7.4V, inogona kudzoserwa kubhatiri rekuchengetedza nekudzika bhatiri risina kunaka. Iyo MAX931 ndeye Ultra-yakaderera simba kuenzanisa ine 1.

182V bhendi gap. Kana uchishanda nemazvo, kuburitsa kwemuenzanisi kwakadzikira, matatu akafanana N-channel FET anodzimwa, uye bhatiri harina chinhu, neiyo huru magetsi ekupa Simba rekutakura. Kana iyo main supply voltage inodonha kusvika ku7.

4V, muenzanisi anoburitsa yakakwira mwero. Ichabatidza N-channel FET, ichidzika bhatiri isina kunaka, inofambiswa nebhatiri (Mufananidzo 2). Mufananidzo 2.

Main power supply voltage (chiteshi 3 muFig. 1) zvishoma nezvishoma inodzikira, gedhi voltage yeN-channel FET inova yakakwirira (chiteshi 2). Izvi zvinobatidza bhatiri kuitira kuti iyo inobuda voltage (channel 1) isvike 9V.

Kana iyo huru yekugovera voltage inosvika 8.4V, iyo N-chiteshi FET inodzimwa, uye iyo huru magetsi inobuda. Iyo D1, C1, uye R6 yegedhi dhiraivha yedunhu inoratidzika kumwe kunonoka, izvo zvinobvisa kupindira kwechinguvana kuti dunhu rinoonekwa kubva kubhatiri kuenda kune huru simba sosi, uye izvi zvenguva pfupi zvinokanganisa zvinogona kukonzera iyo system&39;s microcontroller kuti igadzirise, iyi Imwe pfungwa pamusoro peakawanda masisitimu haigamuchirwi.

Mufananidzo 3 unoratidza maitiro apo dunhu risipo kupindira kwenguva pfupi. Ongorora: R3 uye R4 isa iyo hysteresis voltage yeMAX931 kusvika 800mV kuve nechokwadi chekushanda chaiko. Ndokumbira utarise kukosha kunoenderana nekupikisa kweiyo MAX931 data data.

Mufananidzo 3. Apo simba rekushandisa rinokurumidza kudzorerwa, mhinduro yekubuda haipo mukupindira kwechinguva.