Yakawedzerwa hupenyu lithium-ion bhatiri nyowani yekuchaja mhinduro

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Dobavljač prijenosnih elektrana

Lithium-ion mabhatiri ane simba rakawanda, saizi diki, uremu uye zvimwe zvakanakira, munharembozha, misika yemalaptop yakatsiva zvachose mamwe mabhatiri, achiverengera angangoita 100%. Parizvino, iyo lithium-ion bhatiri iri kukurumidza kuwedzera kune emagetsi maturusi uye mamwe maapplication, uye tarisiro yayo yakakura yemusika iri kuwedzera kuzivikanwa. Nekudaro, kana zvichienzaniswa nenickel, nickel-cadmium, lead-asidhi mabhatiri, zvinodikanwa kusundira kushandiswa nekuvandudzwa kwemabhatiri e-lithium-ion nekukurumidza, uye inofanira kugara ichivandudza kuchengetedzeka kwayo uye hupenyu hwebasa.

Ichi chinyorwa chichakurukura rudzi rutsva rwekuchaja mhinduro kubva pakona yejaja, kuwedzera kuchengetedzwa kwemabhatiri e-lithium-ion, kuwedzera hupenyu hwebhatiri, nekuderedza mutengo wejaja. Mukati mekushandisa bhatiri, tinowanzonzwa mutsara wakadai sebhatiri indasitiri: "Pane zvishoma mukushandiswa kwebhatiri, zvakanyanya kusiyanisa". Uyu mutsara tinogona kunzwisisa kuti zvisizvo zvekuchaja mamiriro kana nzira dzichanyanya kukuvadza bhatiri uye kuderedza hupenyu hwebhatiri.

Tora 1,8650 lithium-cobalt-isina bhatiri semuenzaniso, kana mutero uri pamusoro pekushisa, pa 70 ¡ã C, iyo electrolyte interface (SEI) inoshandiswa kuora uye kupisa; 120 ¡ã C, iyo electrolyte, iyo electrode yakanaka inotanga kuparara kwemafuta, zvichiita kuti gasi riwedzere kuwedzera kupisa; Around 260 ¡ã C: Battery explosion. Kana kubhadharisa pamusoro pekumanikidza, maererano ne overvoltage 5.5V, nyore kudonha lithium simbi, solvent is oxidized, tembiricha kukwira, zvakaipa kutenderera, kana kunyange mabhatiri, kuputika.

Naizvozvo, kuti tingachaja sei, tichakurukura nyaya dzinokosha dzinotevera pamwe chete. Sei uchida precharge? Bhatiri rinoshanda magetsi kubva pa2.5V (carbon negative bhatiri: 3V, simba 0%) kusvika 4.

2V (100% simba). Kana iyo voltage iri pasi pe2.5V, kubuda kwebhatiri kunomiswa.

Panguva imwecheteyo, nokuti jira rekubuda rakavharwa, kurasikirwa kwemazuva ano kwekuchengetedzwa kwemukati kunoderedzwawo kusvika kune yakaderera. Ehe, nekuda kwezvakasiyana zvemukati zvinhu, iyo discharge termination voltage inogona kunge iri mumhando ye2.5V-3.

0V nekuda kwezvinhu zvakasiyana zvemukati. Kana iyo voltage ichipfuura 4.2V, iyo yekuchaja loop inomiswa kuchengetedza kuchengetedza kwebhatiri; uye kana iyo unit cell inoshanda voltage inodonha pazasi 3.

0V, tinogona kufunga kuti kuburitsa kwapera, kuburitsa loop kunomiswa kuchengetedza kuchengetedza bhatiri. Naizvozvo, kana bhatiri rikasashandiswa, bhatiri rinofanirwa kuchajwa 20% magetsi, uye ipapo mwando-uchapupu kuchengetedza. Sezvo iyo lithium-ion bhatiri ine yakakwira simba reshiyo, zvinodikanwa kudzivirira kuwandisa uye kuwedzera-kuisa muhupenyu hwebhatiri.

Overlant inokonzeresa kuomerwa kudzoreredza kwezvinhu zvinoshanda, kana ikaenda zvakananga mukukurumidza simba modhi (hombe yazvino), inokuvadza bhatiri, inokanganisa hupenyu hwebasa uye inogona kuunza njodzi dzekuchengetedza. Kutanga kuchaja iyo diki ikozvino (C / 10) kusvika 2.5V kusvika 3.

0V, uye wobva washandura kune kukurumidza kuchaja inodiwa. Kunyangwe ikozvino lithium-ion bhatiri ine inodzivirira bhodhi mukushandisa, kazhinji, mukana wekupindirana uchave mudiki, asi usingawedzeri precharge, muzviitiko zviviri izvi, mamiriro acho anogonawo kuunza njodzi Yakavanzika. Kutanga, bhodhi rekudzivirira harina kukodzera, uye yechipiri ndeyekuisa (5% -10% / mwedzi) kuzvidzora kwehuwandu.

Naizvozvo, diki ikozvino precharge inogona kugadzirisa zvinobudirira dambudziko rekuchaja kweanopfuura-kuburitsa maseru. Nekudaro, yekuchaja ikozvino haina kukura, nani. Tichitora monomer lithium ion bhatiri semuenzaniso, nzira yekuchaja inosanganisira inogara iripo, inongogara voltage yekuchaja maitiro, inogara voltage inowanzo 4.

2V (semuenzaniso weLiCoO2 bhatiri), iyo inogara iripo yekuseta kukosha ndeye 0.1c ~ 1c. Kunyangwe kuchaja kwechaji hombe kuchizopfupisa nguva yekuchaja, zvinokonzeresa kudzikiswa kwekupfupika uye kugona kwebhatiri lifecycle, saka isu tinofanirwa kusarudza yakakodzera nguva dzese kukosha kwechaji.

Pazasi pane hukama hwehukama hwekuchaja kwakasiyana ikozvino uye bhatiri huwandu hwe4.2V / 900mAhlicoo2 cell (Mufananidzo 1), tinogona kuona kuti huwandu hwebhatiri hwekuchaja hudiki huripo hwakakura zvakanyanya kupfuura huwandu hwebhatiri hwekuchaja kwazvino mushure memubhadharo ungangoita mazana mashanu. Kurongeka kwevoltage yekuchaja kwemagetsi nguva dzose kunoda bhatiri remagetsi, uye iyo overchaul ichave nekukuvadza kukuru kune lithium-ion bhatiri, uye zvinokwanisika kuwedzera kudonha kana kunyange kuputika.

Uyezve, zviri nyore kuita kuti chinhu che electrolytic chiri mubhatiri chikurumidze hupenyu hwebhatiri, uye saka iyo chaiyo yenguva dzose voltage kukosha kwakakosha kune hupenyu hwebhatiri ye lithium-ion. Kuti uwedzere kubhadhariswa, kuve nechokwadi chekuti iyo inogara ichikosha voltage uye kurongeka kweiyo yekupedzisira voltage kukosha kuri mukati me1%. Kutora lithium-cobalt-isina ion bhatiri semuenzaniso, zvakanakisa kuve pedyo nepaunogona na4.

2V, asi isingasviki 4.2V, iyi yakakwirira-charging voltage yekuchaja nzira inogona kuderedza kunyungudika kwecobalt, kudzikamisa iyo yakaturikidzana chimiro cheLiCoO2, iite Iyo yekupfeka haichinji, inovandudza kutenderera kwekuita, uye inochengetedza hukuru hwepamusoro. Uye zvakare, kunyangwe kuwedzeredza kudiki kuchaunza zviitiko zviviri, bhatiri rekutanga simba rakaderedzwa uye hupenyu hwebhatiri hunodzikiswa.

Panyaya ye-multi-elevative ion bhatiri, kuitira kuti ive nechokwadi chepamusoro-soro yebhatiri uye hupenyu, dzimwe nguva kunyange kurongeka kuri pasi pe0.5%. Naizvozvo, iko kurongeka kweiyo yekuchaja voltage ndiyo yakakosha tekinoroji yelithium-ion bhatiri majaja.

Parizvino, vanhu vane kusanzwisisa kwakadaro kune yekuchaja voltage ye lithium ion bhatiri. Inofungidzirwa kuti kune bhodhi rekudzivirira bhatiri. Izvo hazvina basa mukurongeka kwevoltage.

Izvi hazvikurudzirwe. Nekuti bhatiri rekuchengetedza bhodhi rinoshandiswa kuita dziviriro nenguva kubva kune mutsaona dzingangoitika, inofunga zvakanyanya kuchengetedza zvinhu, kwete kuita zvinhu. Somuenzaniso, semuenzaniso we4.

2V, iyo overvoltage yekudzivirira parameter yeplate yekudzivirira ndeye 4.30V (mamwe anogona kunge ari 4.4V), kana nguva yega yega yakazara, ine 4.

30V senzvimbo yekuchaja yakachekwa, huwandu hwebhatiri huchakurumidza kukurumidza. Ko sei une vendor ye charger yavakambobata mushandisi wecharger kuti vadzoke vachiti charger yaparara nekuti battery rachajiwa rimwe zuva battery harina kuzara charger haibatiki light gara riri Red light. Kana mugadziri achinyatsoyera charger, inoona kuti yakajairika uye inosangana nezvinodiwa nefekitori.

Dambudziko nderei? Izvi zvakakosha nekuti charger iyi haitarisi kuchembera kwebhatiri. Kana iyo ikozvino yemhosva inouraya idiki, ichaita kuti bhatiri yekuchembera irege kusvika panzvimbo yakatarwa yekuchaja yakapedzwa, kuitira kuti mushandisi aite zvisirizvo, uye inofungidzirwa kuti charger yave yakaipa. Chinangwa chekudhinda kwekuchaja ndechekudzivirira yakakuvadzwa kana yakawandisa bhasikoro ye lithium-ion mabhatiri, mune yakasarudzika chikamu chekuchaja, nekuda kwekuzviburitsa, zvakaoma kupinda muhurumende yeEOC (yakakwirira kupfuura kutonga ikozvino), kune rumwe rutivi kumushandisi Kune rumwe rutivi, zvinogonekawo kuwedzera pamusoro pekuchaja kwebhatiri.

Tichitarisa pazvinhu izvi, iyo itsva yakawanda-lithium-ion bhatiri yekuchaja chip OZ8981 yakatangwa neiyo uneenness tekinoroji (O2Micro) yatove mhinduro yakakwana. OZ8981 yakazvipira yekuchaja manejimendi yakasanganiswa chip ine chaiyo voltage, yazvino kubuda, uye kuchengetedzwa kwakawanda, uye inopa matanhatu-nhanho yekuchaja yekudzora modhi ine nyore dhizaini dhizaini uye mutengo wakaderera. Izvo zvakakosha kune akawanda-lithium ion bhatiri mapaketi emagetsi emagetsi emagetsi, mabhasikoro emagetsi uye maturusi emagetsi.

Yakanyanya kudhura-inoshanda uye yakakwirira kuvimbika OZ8981 ine single-chip yakasanganiswa yekuchaja zvinodzora zvinowana zvinobudirira kukanganisa amplifier kubuda. Inotsigira 0V pulse kuchaja, precharge, inogara ichichaja ikozvino, inogara ichichaja voltage, nguva yekupedzisira, uye otomatiki recharging control. Intelligent kuchaja control.

Inotsigira inochinjika marongero e-pre-charged startup voltage, inogara ichichaja yazvino, inongogara voltage yekuchaja kukosha, uye kuchekwa-kuchaja kukosha kwazvino. Mukuwedzera, iyo OZ8981 ine yakakwira chaiyo yekuchaja voltage ("1%) uye ikozvino ("5%) inobuda; nekugadziriswa kwekunze kwekupikisa, kukwana kwemagetsi kunogona kuva "0.5%).

Tsigiro yembiri yekuchaja muchina: precharge, inogara ichichaja voltage iri panguva (yakakura maawa mashanu, kana kwete). Tsigiro yekudzivirira kwehuviri tembiricha: kudzivirira kwemukati tembiricha (115 ¡ã C), kunze kwepamusoro tembiricha yekudzivirira (default: 44 ¡ã C) uye yakaderera tembiricha yekudzivirira (default: 2 ¡ã C). Yekunze tembiricha yekudzivirira nzvimbo inogona kuve yekunze inoshanduka marongero.

Tsigiro yekuchaja overpressure dziviriro, overcurrent kudzivirira, pfupi dunhu kuchengetedza. Tsigira bhatiri otomatiki kuwana kuwanikwa, yakananga LED inoratidzira yekuchaja nyika. Chishandiso chinotora universal package SOP16.

Fig. 4 igirafu inoratidza kuchaja girafu yeOZ8981 lithium ion bhatiri. Nekubatanidza neyekumberi-yekupedzisira PWM chip, OZ8981 ichabatsira vashandisi kukurumidza kuwana yakachengeteka uye inoshanda uye yakaderera-mutengo lithium-ion bhatiri charger d.