Mumakore achangopfuura, moto uye kuputika kwakaitika kakawanda mune mamwe mafekitari emagetsi, uye kuchengetedzwa kwemabhatiri e-lithium kwakava nyaya inonyanya kunetseka kune vatengi.Moto wesimba lithium-ion bhatiripack haiwanzo, asi kana yangoitika, inokonzeresa kuita kwakasimba uye kukonzera kuratidzwa kwakawanda.Lithium bhatiri pack moto inogona kukonzerwa nekukanganisa mukati mebhatiri kwete bhatiri pacharo.Chikonzero chikuru ndechekutiza kwekushisa.
Chikonzero chemoto musimba lithium bhatiri pack
Chikonzero chikuru chekupisa kwemoto lithium bhatiri pack ndeyokuti kupisa mubhatiri hakugoni kusunungurwa maererano nezvinodiwa zvekugadzira, uye moto unokonzerwa mushure mokunge wasvika panzvimbo yekupisa yezvinhu zvinopisa zvemukati nekunze, uye zvikonzero zvikuru zveizvi ndezvekunze kupfupi, kunze kwekushisa kwekunze uye mukati. short circuit..
Sezvo simba remagetsi emotokari dzemagetsi dzakachena, chikonzero chikuru chemoto mu lithiamu-ion bhatiri packs ndiko kupisa kwemhepo kunokonzerwa nekupisa kwebhatiri, izvo zvinowanzoitika panguva yekuchaja uye kuburitsa.Sezvo iyo lithium-ion bhatiri pachayo ine kumwe kupikisa kwemukati, inoburitsa humwe huwandu hwekupisa ichiburitsa simba remagetsi kupa simba kumotokari dzemagetsi dzakachena, izvo zvichawedzera tembiricha yayo.Kana tembiricha yayo yadarika yayo yakajairika tembiricha yekushanda, iyo yese lithium bhatiri ichakuvadzwa.Urefu hweboka uye kuchengeteka.
Thesimba bhatiri systeminoumbwa neakawanda simba bhatiri maseru.Munguva yekushanda, huwandu hwakawanda hwekupisa hunogadzirwa uye hunounganidzwa mubhokisi duku rebhatiri.Kana kupisa kusingakwanisi kukurumidza kupera munguva, kupisa kwepamusoro kuchakanganisa hupenyu hwesimba re lithium battery pack uye kunyange Thermal runaway inoitika, zvichiita kuti njodzi dzakadai semoto uye kuputika.
Tichifunga nezvekupisa kwekutiza kwelithium-ion bhatiri packs, mhinduro dzemazuva ano dzemumba dzinonyanya kuvandudzwa kubva kuzvinhu zviviri: kudzivirira kwekunze uye kuvandudzwa kwemukati.Kudzivirirwa kwekunze kunonyanya kureva kukwidziridzwa nekuvandudzwa kwehurongwa, uye kuvandudzwa kwemukati kunoreva kuvandudzwa kwebhatiri pacharo.
Heano zvikonzero zvishanu nei simba lithium bhatiri mapaketi achibata moto:
1. Yekunze pfupi yedunhu
Iyo yekunze pfupi yedunhu inogona kukonzerwa nekushanda zvisina kunaka kana kushandiswa zvisina kunaka.Nekuda kwekunze kupfupi wedunhu, kubuda kweiyo lithium bhatiri pack yakakura kwazvo, iyo ichaita kuti iyo iron core kupisa.Tembiricha yepamusoro ichaita kuti diaphragm iri mukati mesimbi musimboti ideredze kana kukuvadzwa zvachose, zvichikonzera mukati mapfupi kutenderera uye moto.
2. Internal short circuit
Nekuda kwechiitiko chemukati mepfupi wedunhu, kubuda kwakakwira ikozvino kwesero rebhatiri kunogadzira kupisa kwakawanda, kunopisa diaphragm, zvichikonzera chiitiko chikuru chepfupi, zvichikonzera kupisa kwakanyanya, iyo electrolyte inoparara kuita gasi, uye yemukati. pressure yakakurisa.Kana iyo goko rekunze repakati risingakwanisi kumirisana nekumanikidza uku, musimboti unobata moto.
3. Kuwedzera mari
Kana iyo simbi yesimbi yakawandisa, kusunungurwa kwakanyanya kwe lithium kubva kune electrode yakanaka kunoshandura chimiro che electrode yakanaka.Yakawandisa lithium inopinzwa nyore nyore muiyo negative electrode, uye zviri nyore kuita kuti lithium idonhe pamusoro peiyo negative electrode.Kana iyo voltage ichipfuura 4.5V, iyo electrolyte inoora uye inoburitsa huwandu hukuru hwegasi.Zvose izvi zvinogona kukonzera moto.
4. Mvura yakanyanyisa
Mvura inogona kuita ne electrolyte mukati mepakati kuita gasi.Kana ichichaja, inogona kuita neyakagadzirwa lithium kugadzira lithium oxide, izvo zvinokonzeresa kurasikirwa kweiyo core kugona, uye zviri nyore kwazvo kuita kuti musimboti uwedzere kubhadhariswa kugadzira gasi.Mvura ine yakaderera decomposition voltage uye inoora zviri nyore kuita gasi panguva yekuchaja.Kana magasi aya achigadzirwa, kudzvanywa kwemukati kwepakati kunowedzera kana goko rekunze repakati risingakwanisi kumira magasi aya.Panguva iyoyo, musimboti uchaputika.
5. Kusakwana kusina kunaka kwe electrode simba
Kana simba re electrode yakaipa maererano ne electrode yakanaka isina kukwana, kana kuti pasina simba zvachose, imwe kana yose ye lithiamu inogadzirwa panguva yekuchaja haigoni kuiswa mu interlayer chimiro cheiyo negative electrode graphite, uye ichaiswa pa. iyo yakaipa electrode pamusoro.Iyo inobuda "dendrite", chikamu cheiyo protuberance inonyanya kukonzera kunaya kwe lithium panguva yekuchaja kunotevera.Mushure memakumi kusvika kumazana ekutenderera kwekuchaja nekuburitsa, iyo "dendrites" inokura uye pakupedzisira inobaya septum bepa, kupfupika kunze kwemukati.
Nguva yekutumira: Jan-10-2022