Ngozi uye kuchengetedza tekinoroji ye lithium ion bhatiri (2)

3. Kuchengetedza teknolojia

Kunyangwe mabhatiri e-lithium ion ane njodzi dzakawanda dzakavanzwa, pasi pemamiriro chaiwo ekushandiswa uye nemamwe matanho, anogona kunyatso kudzora kuitika kwemaitiro epadivi uye kuita kwechisimba mumaseru ebhatiri kuve nechokwadi chekushandisa kwavo kwakachengeteka.Iyi inotevera sumo pfupi kune akati wandei anowanzo shandiswa kuchengetedza matekinoroji e lithium ion mabhatiri.

(1) Sarudza mbishi zvinhu zvine yakakwirira kuchengetedza chinhu

Zvakanaka uye zvisina kunaka polar inoshanda zvinhu, diaphragm zvinhu uye electrolytes ine yakakwirira yekuchengetedza chinhu ichasarudzwa.

a) Kusarudzwa kwezvinhu zvakanaka

Kuchengeteka kwezvinhu zvecathode kunonyanya kuenderana nezvinhu zvitatu zvinotevera:

1. Thermodynamic kugadzikana kwezvinhu;

2. Kugadzikana kwemakemikari kwezvinhu;

3. Zvinhu zvemuviri zvezvinhu.

b) Kusarudzwa kwezvinhu zvediaphragm

Basa guru re diaphragm nderekuparadzanisa maelectrodes akanaka neasina kunaka ebhatiri, kudzivirira pfupi pfupi inokonzerwa nekubatana pakati pezvakanaka nezvakaipa, uye kuita kuti electrolyte ions ipfuure, kureva kuti ine magetsi ekudzivirira uye ion. conductivity.Aya mapoinzi anotevera anofanirwa kucherechedzwa pakusarudza diaphragm ye lithium ion mabhatiri:

1. Iine magetsi ekudzivirira kuti ive nechokwadi chekuparadzaniswa kwemagetsi kwezvakanaka uye zvisina kunaka electrodes;

2. Iine imwe aperture uye porosity kuti ive nechokwadi chekudzivirira kuderera uye high ionic conductivity;

3. Iyo diaphragm zvinhu zvichave nekugadzikana kwekemikari yakakwana uye inofanirwa kushingirira kune electrolyte corrosion;

4. Iyo diaphragm ichave nebasa reotomatiki kuvhara kudzivirira;

5. Thermal shrinkage uye deformation ye diaphragm ichave shoma sezvinobvira;

6. Diaphragm ngaive nehumwe ukobvu;

7. Iyo diaphragm ichave ine simba rakasimba remuviri uye yakakwana yekupinza kuramba.

c) Kusarudzwa kwe electrolyte

Electrolyte chikamu chakakosha che lithium ion bhatiri, iyo inobata basa rekutumira uye kuita ikozvino pakati peiyo yakanaka uye yakaipa electrode yebhatiri.Iyo electrolyte inoshandiswa mumabhatiri e-lithium ion imhinduro ye electrolyte inoumbwa nekunyungudutsa yakakodzera lithium munyu mune organic aprotic yakasanganiswa solvents.Ichawanzozadzisa zvinotevera zvinodiwa:

1. Kugadzikana kwakanaka kwemakemikari, hapana maitiro emakemikari ane electrode active substance, collector fluid uye diaphragm;

2. Kugadzikana kwakanaka kwe electrochemical, nehwindo rakakura re electrochemical;

3. High lithium ion conductivity uye low electronic conductivity;

4. Wide yemvura tembiricha;

5. Yakachengeteka, isiri-chepfu uye ine ushamwari kwezvakatipoteredza.

(2) Simbisa iyo yese yekuchengetedza dhizaini yesero

Iyo bhatiri sero ndiyo chinongedzo chinobatanidza zvakasiyana siyana zvebhatiri, uye kubatanidzwa kweyakanaka pole, negative pole, diaphragm, lug uye kurongedza firimu.Iyo dhizaini yechimiro chesero haingokanganisa mashandiro emhando dzakasiyana siyana, asi zvakare ine yakakosha kukanganisa kwese kwese electrochemical kuita uye kuchengetedza kuita kwebhatiri.Kusarudzwa kwezvinhu uye kugadzirwa kweiyo core structure ingori rudzi rwehukama pakati penzvimbo uye yese.Mukugadzirwa kweiyo core, iyo inonzwisisika chimiro modhi inofanirwa kuumbwa zvinoenderana nehunhu hwezvinhu.

Uye zvakare, mamwe ekuwedzera ekudzivirira ekudzivirira anogona kutariswa kune iyo lithium bhatiri chimiro.Nzira dzekudzivirira dzakajairika ndedzinotevera:

a) Iyo switch element inogamuchirwa.Kana tembiricha iri mukati mebhatiri ichikwira, kukosha kwayo kwekudzivirira kuchakwira zvinoenderana.Kana tembiricha yakanyanyisa, magetsi anozomira otomatiki;

b) Isai vharafu yekuchengetedza (kureva, mhepo yemhepo iri pamusoro pebhatiri).Kana kudzvanywa kwemukati kwebhatiri kuchikwira kune imwe kukosha, vharafu yekudzivirira ichavhura yega kuti ive nechokwadi chekuchengetedzwa kwebhatiri.

Heano mimwe mienzaniso yechengetedzo dhizaini yemagetsi core structure:

1. Positive uye yakaipa danda kugona reshiyo uye dhizaini saizi slice

Sarudza akakodzera huwandu hwehuwandu hweakanaka uye asina kunaka emagetsi zvinoenderana nehunhu hwezvakanaka uye zvisina kunaka electrode zvinhu.Chiyero cheyakanaka uye isina kunaka electrode kugona kwesero chinhu chakakosha chinobatana nekuchengetedzwa kwemabhatiri e-lithium ion.Kana iyo yakanaka electrode kugona yakakurisa, simbi lithium inoisa pamusoro peiyo negative electrode, nepo kana iyo negative electrode yakawandisa, huwandu hwebhatiri hunorasika zvakanyanya.Kazhinji, N/P = 1.05-1.15, uye kusarudzwa kwakakodzera kuchaitwa zvinoenderana nechaiyo bhatiri kugona uye kuchengetedza zvinodiwa.Zvidimbu zvakakura uye zviduku zvichange zvakagadzirirwa kuitira kuti nzvimbo yepasita isina kunaka (inoshanda zvinhu) inovhara (inodarika) nzvimbo yekunamatira yakanaka.Kazhinji, hupamhi huchava 1 ~ 5 mm muhombe uye kureba kuchave 5 ~ 10 mm hombe.

2. Mvumo yehupamhi hwediaphragm

Iyo general nheyo yediaphragm upamhi dhizaini ndeyekudzivirira yemukati pfupi yedunhu inokonzerwa nekusangana kwakananga pakati peyakanaka uye yakaipa electrode.Sezvo kupisa kwekushisa kwe diaphragm kuchikonzera deformation ye diaphragm mukureba uye hupamhi kutungamira panguva yekuchaja bhatiri uye kubuda uye pasi pekupisa kwekutyisa uye nedzimwe nharaunda, iyo polarization yenzvimbo yakapetwa ye diaphragm inowedzera nekuda kwekuwedzera kwechinhambwe pakati pechakanaka. uye negative electrodes;Iko mukana we micro short circuit munzvimbo yakatambanudzwa ye diaphragm inowedzera nekuda kwekutetepa kwe diaphragm;Shrinkage pamucheto we diaphragm inogona kutungamira kutarisana kwakananga pakati peiyo yakanaka uye yakaipa maelectrode uye yemukati pfupi dunhu, izvo zvinogona kukonzera njodzi nekuda kwekupisa kwebhatiri.Naizvozvo, kana uchigadzira bhatiri, maitiro ayo ekuderera anofanirwa kuverengerwa mukushandiswa kwenzvimbo uye upamhi hwe diaphragm.Iyo yekuzviparadzanisa firimu inofanira kuva yakakura kudarika anode uye cathode.Pamusoro pekukanganisa kwemaitiro, iyo firimu yekuzviparadzanisa inofanira kunge yakareba 0.1mm kupfuura yekunze kwechikamu che electrode.

3.Insulation kurapwa

Internal short circuit chinhu chakakosha mune inogona kuchengetedza njodzi ye lithium-ion bhatiri.Kune akawanda anogona kuve ane ngozi zvikamu izvo zvinokonzeresa yemukati pfupi dunhu muchimiro chechimiro chesero.Nokudaro, matanho anodiwa kana kuvhara kunofanira kuiswa panzvimbo idzi dzinokosha kudzivirira mukati mekati pfupi mubhatiri pasi pemamiriro ezvinhu asina kunaka, zvakadai sekuchengetedza nzvimbo inodiwa pakati penzeve dzakanaka uye dzisina kunaka dze electrode;Insulating tepi ichanamirwa panzvimbo isina kunamira pakati pekupedzisira kumwe chete, uye zvikamu zvese zviri pachena zvichavharwa;Insulating tepi ichanamirwa pakati peyakanaka aluminium foil uye yakaipa inoshanda chinhu;Iyo welding chikamu chegugi ichavharwa zvachose ne insulating tepi;Insulating tepi inoshandiswa pamusoro pesimbi yemagetsi.

4.Kuisa vharafu yekuchengetedza (kumanikidza mudziyo wekununura)

Lithium ion mabhatiri ane ngozi, kazhinji nekuti tembiricha yemukati yakanyanya kana kudzvanywa kwakanyanyisa kukonzera kuputika nemoto;Chishandiso chinonzwisisika chekuyamura chinogona kukurumidza kuburitsa kudzvanywa uye kupisa mukati mebhatiri kana paine njodzi, uye kuderedza njodzi yekuputika.Iyo inonzwisisika yekuyamura dhizaini haingosangana nekumanikidza kwemukati kwebhatiri panguva yekushanda kwakajairwa, asi zvakare kuvhurika otomatiki kuburitsa kudzvanywa kana kudzvanywa kwemukati kwasvika pamuganho wengozi.Nzvimbo yekugadzika yedhivha yekumanikidza yekumanikidza ichagadzirwa ichifunga nezve deformation maitiro ebheti shell nekuda kwekuwedzera kwekumanikidza kwemukati;Iyo dhizaini yevhavhavhavha yekuchengetedza inogona kuoneka nemaflakes, mipendero, seams uye nick.

(3) Kuvandudza danho rekuita

Nhamburiko dzinofanirwa kuitwa kuenzanisa uye kuenzanisa maitiro ekugadzirwa kwesero.Mumatanho ekusanganisa, kupfekedza, kubheka, kubatanidza, kutsemura uye kupeta, gadzira kumira (senge diaphragm upamhi, electrolyte jekiseni vhoriyamu, nezvimwewo), kunatsiridza nzira nzira (senge yakaderera kumanikidza jekiseni nzira, centrifugal kurongedza nzira, nezvimwewo) , ita basa rakanaka mukutonga kwemaitiro, simbisa maitiro emhando, uye kupfupisa misiyano pakati pezvigadzirwa;Isa nhanho dzebasa dzakakosha mumatanho akakosha anobata kuchengetedzeka (sekubvisa chidimbu che electrode, kutsvaira kwehupfu, nzira dzakasiyana dzekushongedza zvinhu zvakasiyana, nezvimwewo), shandisa yakamisikidzwa yemhando yekutarisa, kubvisa mativi akaremara, uye kubvisa zvigadzirwa zvisina kukwana (senge deformation electrode chidimbu, diaphragm puncture, inoshanda zvinhu inodonha, electrolyte leakage, nezvimwewo);Chengetedza saiti yekugadzira yakachena uye yakatsvinda, shandisa 5S manejimendi uye 6-sigma yemhando yekudzora, kudzivirira kusvibiswa uye hunyoro kubva mukusanganiswa mukugadzira, uye kuderedza kukanganisa kwetsaona mukugadzira pakuchengetedza.