Lithium-ion bhatiri yekuchaja nzira yekuchengetedza simba

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Fournisseur de centrales électriques portables

Kuenzaniswa nematekinoroji ekare akadai senickel-cadmium, lithium-ion bhatiri chemistry tekinoroji inovandudza zvakanyanya kuwanda kwesimba remidziyo inotakurika, uye inotevera nguva yakajairika yekushanda kweaya masisitimu kana kamwe chete kuchaja. Iko-self-discharge ratio ye lithium-ion bhatiri hafu ye nickel-cadmium uye nickel metal hydrides, iyo inobatsirawo hupenyu hwesherufu, inobvumira midziyo kubhadhara, kuitira kuti vatengi varege kutenga vasati vashandisa. Izvo zvisingabatsiri zve lithium ions zvakanyanya kuoma kupfuura tekinoroji yekare kupfuura yekutanga chemistry.

Nekudaro, manejimendi akangwarira anogona kushandiswa kukwirisa simba rekutakura relithium ions, kwete kungopa chiitiko chiri nani, asi zvakare inobvumidza iwe kupfupisa dhizaini yako kushandisa mabhatiri madiki. Sezvo bhatiri richiita reshiyo yakakosha muhukuru uye huremu hwechishandiso chinopfekeka, zvinoshamisa nekutsiva dunhu rekuchaja kune imwe dunhu rekuchaja. Dambudziko rakakosha remabhatiri e-lithium-ion nderekuti ivo vanonyanya kushushikana nekuchaja kwakanyanya, nekuti yakawandisa voltage inogona kukonzera kushushikana kwezvinhu, nekudaro kupfupisa hupenyu hwebhatiri.

Kana iyo charge ikadarika voltage ye4.2V pabhatiri, ivo vanounzawo njodzi dzekuchengetedza. Zvikwereti zvinodhura zvinodhura zvinogona kuwedzerwa, nokuti bhatiri haisviki pamuganhu chaiwo.

Vanoshandisa izvo zvinodaidzwa kuti kuchaja uye kumhanya nzira, zano iri rine mukana wekuti rinotarisa nekukurumidza. Iri zano rinoshandisa maitiro eiyo lithium ion yekuchaja curve, iyo inogona kukamurwa kuita mana akakosha matanho. Chikamu chekutanga chinoshandisa chinogara chiripo kugovera bhatiri.

Nebhatiri, voltage yaro inowedzera kana kushoma mutsetse. Iyo voltage inoderedzwa padyo nepamusoro pepamusoro, panguva iyo charger inogona kumira. Nekudaro, ingangoita 85% kuchaja panguva ino, zvichikonzera kuti nguva yekushandiswa ive yakaderera mudzidziso.

Uye zvakare, nekuda kwezvikonzero zvekuchengetedza, iyo cutoff voltage inowanzoiswa pazasi peyakanyanya voltage, ichiwedzera kudzikisa iyo yakanyanya kubhadharisa inoiswa kubhatiri. Iyo cutoff voltage ndeye 3.8V kwete iyo yakajairwa yakawanda ye4.

2V, saka 60% yehuwandu hwebhatiri iripo. Iyo yese yekuchaja inoitwa panguva yekuzara kana yekugara voltage chikamu. Kunyangwe iyo yekumhanyisa charger ichigona kuderedza nguva inodiwa kuti isvike pachikamu chekuzadza nekuwedzera kuchaja ikozvino, izvi zvine mhedzisiro yekuwedzera chikamu chekuzadza, uye nekungwarira uye nemazvo kudzora nhanho yekusatutsira kudzivirira kushushikana.

Mufananidzo 1: Kuchaja nhanho yemabhatiri e-lithium ion, kusanganisira matanho ekugadzirisa kupisa pasi pemamiriro ekushisa. Zvakaoma kuedza bhatiri rakazara nekufashukira, saka nguva kana nhanho yemazuva ano inoshandiswa se proxy kuratidza kuti bhatiri rave pedyo nekuchaja. Kazhinji, iyo saturation kuchaja ingangoita maawa maviri, nekudaro ichipa inonzwisisika seti yenguva.

Panguva yekuchaja saturation, index yazvino inoderera. Kana yazvino yasvika panosvika 3% yedanho rinoshandiswa muchikamu chekutanga, bhatiri rinowanzo kutorwa serakachajiwa zvizere uye maitiro anogona kumira. Voltage inoshandiswa panguva yekuchaja yakazara inogadziriswa kusvika pazana imwe chete kana zvirinani.

Denderedzwa dzinoita chaja yakazara inogona kushandisa ikozvino kuyedzwa uye kudzvanya kubata maitiro ekuona kuti simba richachekwa mushure menguva yakati rebei, uye simbi lithium inounganidza, zvichikonzera moto. Tembiricha inobatsirawo pakudzora kuchaja. Muchikamu chekutanga, kupikisa kwemukati kunenge kwakaderera, bhatiri haizogadziriswi.

Kana wangopinda muchikamu chekugadzika, bhatiri rinobva radziya. Naizvozvo, iyo tembiricha sensor ine chekuita nekuona kuti bhatiri harizopisa uye kuve nenjodzi yakachengeteka yakakosha. Vagadziri vebhatiri vanozopa yakachengeteka tembiricha muganho wezvigadzirwa zvavo, uye kazhinji vanopa mathermistors anogona kushandiswa neADCs kana comparator maseketi mujaja reji mubhatiri pack.

Nzira yekuchaja inofanira kubhadharwa kusati kwadzika kuderera. Izvi zvinoshandisa trickle kuchaja kutangazve bhatiri rinochajwa - yakaedzwa voltage yavo ichave yakaderera pane 3V. Kana iyo trickle process yapihwa nechaji yakakwana, voltage inokwira kusvika ku3V kana kupfuura uye yakajairika nhanho yekutanga yekuchaja inogona kutorwa.

Linglurt&39;s LTC4065 charger IC inoshandisa diki saizi DFN package inopa maitiro ekuronga zvishwe zvemhinduro kutsigira akasiyana ekuchaja modhi inodiwa kune lithium ion mabhatiri. Chishandiso chinotsigira anogara aripo uye anogara ari voltage kuchaja nzira, pamwe neanogara tembiricha kuti abvumire inoshanda yekuchaja padyo nebhatiri. Kuti utsigire tembiricha yekuchaja, iyo LTC4065 ine yekupisa muganho wedunhu.

Izvi zvinogona kuseta yazvino yekuchaja zvinoenderana neyakajairwa ambient tembiricha (panzvimbo peiyo yakaipisisa kesi), uye ive nechokwadi chekuti charger inodzikiswa otomatiki mune yakaipisisa kesi. MuLTC4065, matatu amplifiers mhinduro loops anodzora anogara aripo, anogara ari voltage, uye inogara tembiricha modhi. Yechina amplifier mhinduro loop inoshandiswa kuwedzera iyo inoburitsa impedance yeazvino sosi pair kuona kuti imwe yekudonhedza ikozvino inongori chiuru chechipiri chekudonha kwechipiri ikozvino.

Iyo yakapatsanurwa mhinduro loop yeanogara aripo uye anogara ari voltage mashandiro anomanikidza charger zvichibva pane chero modhi inoedza kuderedza kuchaja ikozvino. Imwe amplifier inobuda yakazara, iyo inonyatso bvisa loop yayo kubva kune system. Kana iri inogara iripo ikozvino modhi, inofambiswa nemazvo kune 1v.

Prog pin yekuronga zvazvino nekushandisa percent tolerance resistor (rPROG). Kana iyo yenguva dzose voltage modhi inodiwa, iyo inogara voltage loop inotyaira yayo inverted kupinza kune yemukati referensi voltage. Iyo yemukati resistor divider inovimbisa kuti bhatiri voltage inoramba iri pa4.

2V.Prog pini voltage inogonawo kuratidza ikozvino yekuchaja mune inogara voltage mode. Mune basa rakajairwa, nguva yekuchaja inotanga neinogara-yazvino modhi - yazvino inounzwa kubhatiri yakaenzana ne1000V / rProg.

Kana simba rekushandisa reLTC4065 riri pedyo ne 115°C, iyo inogumira tembiricha amplifier ichatanga kudzika yekuchaja ikozvino, kudzikisira tembiricha yechip mukati 115°C. Kana iyo tembiricha yekudzora modhi yabuda, iyo LTC 4065 ichadzoka inogara iripo modhi kana kupinda inogara voltage mode kubva kune inogara tembiricha modhi. Kunyangwe iri modhi, iyo voltage yePROG pini inoenderana neyazvino inounzwa kubhatiri.

Internal press-of-time circuitry uye trickle charger manejimendi zvakavandudza mabasa anodiwa kune inoshanda lithium-ion bhatiri manejimendi. Chishandiso chinopa 0.6% inoyangarara voltage kurongeka, maviri chete ekunze zvikamu.

Kana iyo simba rekupinza rabviswa, iyo LTC4065 inongoerekana yapinda munzvimbo yakaderera uye kubuda kwebhatiri kunodzikiswa kusvika. 1μA pazasi. Mushure mekushandiswa kwesimba, iyo LTC4065 inogona kupinda yekudzima modhi uye kudonhedza magetsi kusvika makumi maviri.

μA pazasi. Mufananidzo 2: Kuchaja mamiriro ekuyerera chati LTC4065 sarudzo yakafanana neiyi. Zvakafanana neLTC4065, MaximIntegrated MAX1551 zvakare ine kupisa kudzikamisa mabasa, kubhadharisa zvakakwana, pasina kudzivirirwa neiyo yakaipisisa kesi bhatiri uye magetsi ekuisa.

Kana muganho wekupisa wasvika, iyo MAX 15551 uye MAX 1555 haizoregi zvachose kuchaja, asi zvishoma nezvishoma kuderedza kuchaja ikozvino, iyo inobatsira kuchengetedza basa kana kutonhora muhurongwa. Iyo SOT23 package inoshandiswa, yakafanana neMAX1551 uye MAX 1555, iyo MCP73811 yakagadziridzwa neMicrochiptechnology inopihwa nekumanikidza nguva dzose uye inogara ichichaja yazvino, iyo yekupedzisira inongorongwa nekupikisa kwekunze, uye yakashongedzerwa neyakavakirwa-mukati kupisa sensor control tembiricha yekuchaja. Iyo BQ2409X yakatevedzana yeTexas Instruments (TI) chinhu chakanyatsobatanidzwa chejaja mudziyo, chakatarisana nenzvimbo inotakurika kushandiswa.

Aya maIC akagadzirirwa simba rechiteshi che USB kana kuti anogona kusagadziriswa AC adapter ane yakakwira yekupinza voltage renji uye yekuisa overvoltage yekudzivirira. BQ2904X inogadzirisa, inogara iripo uye inogara ichichaja voltage. Mumatanho ese ekuchaja, yemukati yekudzora loop monitors IC junction tembiricha uye yakaderera yekuchaja ikozvino kana ichipfuura emukati tembiricha zvikumbaridzo.

Kunyangwe kusanganiswa kwemabhatiri e-lithium-ion kubhadharisa matekiniki anobvumira kuvaka inotakurika uye inopfekeka masisitimu kuita kuti chivakwa chinotakurika uye chinopfekeka masisitimu kuita nguva yakareba, basa rakareba rinopihwa, uye saizi yebhatiri inogona kuderedzwa. Iyo yakanakisa kutengeserana-kubva pakati pediki kune huremu uye hupenyu. .