Uhlalutyo lwesizathu kunye nezisombululo zeengxaki eziqhelekileyo zebhetri ye-lithium ion

Ngophuhliso olukhawulezayo lwenzululwazi nobuchwepheshe, ububanzi kunye nendima yeiibhetri ze-lithiumkudala zibonakala, kodwa kubomi bethu bemihla ngemihla, iingozi zebhetri ze-lithium zihlala zivela ngokungapheliyo, ezihlala zisibetha.Ngenxa yoku, umhleli uququzelela ngokukhethekileyo i-lithium Uhlalutyo lwezizathu zeengxaki eziqhelekileyo ze-ion kunye nezisombululo, ndiyathemba ukukubonelela ngokulula.

1. I-voltage ayihambisani, kwaye ezinye ziphantsi

1. Ukuzikhupha okukhulu kubangela umbane ophantsi

I-self-discharge yeseli inkulu, ukwenzela ukuba i-voltage yayo ihle ngokukhawuleza kunabanye.Umbane ophantsi unokupheliswa ngokujonga i-voltage emva kokugcinwa.

2. Intlawulo engalinganiyo ibangela umbane ophantsi

Xa ibhetri ihlawuliswa emva kovavanyo, iseli yebhetri ayihlawuliswanga ngokulinganayo ngenxa yokungahambelani koqhagamshelwano okanye umbane wokutshaja wekhabhinethi yokuvavanya.Umahluko olinganisiweyo wombane uncinci ngexesha lokugcinwa kwexesha elifutshane (iiyure ze-12), kodwa umahluko we-voltage mkhulu ngexesha lokugcinwa kwexesha elide.Lo mbane uphantsi awunazo iingxaki zomgangatho kwaye unokusonjululwa ngokutshaja.Igcinwe ngaphezu kweeyure ezingama-24 ukulinganisa i-voltage emva kokuhlawuliswa ngexesha lemveliso.

Okwesibini, ukuchasana kwangaphakathi kukhulu kakhulu

1. Umahluko kwizixhobo zokukhangela ezibangelwa

Ukuba ukufumanisa ukuchaneka akwanelanga okanye iqela loqhagamshelwano alikwazi ukupheliswa, ukuchasana kwangaphakathi kwesiboniso kuya kuba kukhulu kakhulu.Umgaqo wendlela yebhulorho ye-AC kufuneka isetyenziswe ukuvavanya ukuchasana kwangaphakathi kwesixhobo.

2. Ixesha lokugcina lide kakhulu

Iibhetri zeLithium zigcinwa ixesha elide kakhulu, zibangela ukulahlekelwa kwamandla amaninzi, ukunyanzeliswa kwangaphakathi, kunye nokuchasana okukhulu kwangaphakathi, okungasombululwa ngokutshaja kunye nokukhupha ukusebenza.

3. Ukufudumala okungaqhelekanga kubangela ukuchasana okukhulu kwangaphakathi

Ibhetri ishushu ngokungaqhelekanga ngexesha lokucubungula (i-spot welding, i-ultrasonic, njl.), Ibangela ukuba i-diaphragm ivelise ukuvalwa kwe-thermal, kwaye ukuchasana kwangaphakathi kwanda kakhulu.

3. Ukwandiswa kwebhetri yeLithium

1. Ibhetri yelithium iyadumba xa itshaja

Xa ibhetri ye-lithium ihlawuliswa, ibhetri ye-lithium iya kwandiswa ngokwemvelo, kodwa ngokuqhelekileyo ingabi ngaphezu kwe-0.1mm, kodwa i-overcharge iya kubangela ukubola kwe-electrolyte, uxinzelelo lwangaphakathi luya kwanda, kwaye ibhetri ye-lithium iya kwanda.

2. Ukwandiswa ngexesha lokucubungula

Ngokuqhelekileyo, ukucutshungulwa okungaqhelekanga (okufana nokujikeleza okufutshane, ukufudumala, njl.) kubangela ukuba i-electrolyte ichithe ngenxa yokufudumala okugqithiseleyo, kwaye ibhetri ye-lithium idumba.

3. Yandisa ngelixa uhamba ngebhayisikile

Xa ibhetri ijikelezwe, ubukhulu buya kwanda ngokunyuka kwenani lemijikelezo, kodwa ayiyi kunyuka emva kwemijikelezo engaphezu kwama-50.Ngokuqhelekileyo, ukunyuka okuqhelekileyo ngu-0.3 ~ 0.6 mm.Iqokobhe le-aluminiyam liyingozi ngakumbi.Le nto ibangelwa yindlela eqhelekileyo yokusabela kwebhetri.Nangona kunjalo, ukuba ubukhulu begobolondo bunyukile okanye izinto zangaphakathi ziyancitshiswa, into yokwandisa ingancitshiswa ngokufanelekileyo.

Okwesine, ibhetri inamandla ezantsi emva kwe-welding yendawo

Umbane weseli ye-aluminiyam yeqokobhe emva kwe-welding yendawo ungaphantsi kwe-3.7V, ngokubanzi ngenxa yokuba indawo ye-welding yangoku iqhekeza i-diaphragm yangaphakathi yeseli kunye neesekethe ezimfutshane, ezibangela ukuba umbane wehle ngokukhawuleza.

Ngokuqhelekileyo, kubangelwa indawo ye-welding engafanelekanga.Indawo echanekileyo yokuwelda kufuneka ibe kukuwelda emazantsi okanye ecaleni kunophawu “A” okanye “—”.I-spot welding ayivumelekanga kwicala kunye necala elikhulu ngaphandle kokumakisha.Ukongeza, ezinye iiteyiphu nickel indawo-weldability amahlwempu weldability, ngoko ke kufuneka ibala-welding kunye yangoku enkulu, ukuze iteyiphu exhathisayo lwangaphakathi lobushushu eliphezulu ayikwazi ukusebenza, nto leyo ebangela yangaphakathi short-yesekethe core ibhetri.

Inxalenye yelahleko yamandla ebhetri emva kokuba i-welding ibangelwa kukuzikhupha kwebhetri ngokwayo.

Isihlanu, ibhetri iyaqhuma

Ngokubanzi, kukho ezi meko zilandelayo xa ukuqhuma kwebhetri kwenzeka:

1. Ugqabhuko-dubulo lokutya kakhulu

Ukuba isiphaluka sokukhusela siphuma kulawulo okanye ikhabhinethi yokubona ingaphandle kolawulo, i-voltage yokutshaja inkulu kune-5V, ibangela ukuba i-electrolyte ichithe, ukusabela okunobundlobongela kwenzeka ngaphakathi kwebhetri, uxinzelelo lwangaphakathi lwebhetri luphakama ngokukhawuleza, kwaye ibhetri iyaqhuma.

2. Ugqabhuko-dubulo oludlulayo

Isiphaluka sokukhusela siphuma ekulawuleni okanye ikhabhinethi yokufumanisa ingaphandle kolawulo, ukwenzela ukuba i-charge yangoku inkulu kakhulu kwaye i-lithium ion ifike emva kwexesha ukuba ifakwe, kwaye isinyithi se-lithium senziwe phezu kwendawo yesibonda, singena ngaphakathi. i-diaphragm, kunye ne-electrode echanekileyo kunye ne-negative i-short-circuited ngqo kwaye ibangela ukuqhuma (kunqabile).

3. Ugqabhuko-dubulo xa i-ultrasonic welding iqokobhe leplastiki

Xa i-ultrasonic welding igobolondo leplastiki, amandla e-ultrasonic adluliselwa kwisiseko sebhetri ngenxa yezixhobo.Amandla e-ultrasonic makhulu kangangokuba i-diaphragm yangaphakathi yebhetri iyancibilika, kwaye i-electrodes ephilileyo kunye ne-negative i-short-circuited ngqo, ibangela ukuqhuma.

4. Ukudubula ngexesha lokuwelda

Ukugqithisa ngokugqithisileyo ngexesha le-welding yendawo kubangele isiphaluka esifutshane sangaphakathi esibangele ukuqhuma.Ukongezelela, ngexesha le-spot welding, i-electrode edibeneyo yokudibanisa iqhekeza yayidibaniswe ngokuthe ngqo kwi-electrode engafanelekanga, ebangela ukuba izibonda ezintle kunye nezibi ukuba zijikeleze ngokukhawuleza kwaye ziqhume.

5. Ugqabhuko-dubulo lokukhupha ngaphezulu

Ukukhutshwa ngokugqithisileyo okanye ukukhutshwa ngokugqithisileyo (ngaphezulu kwe-3C) yebhetri iya kunyibilika ngokulula kwaye ifake i-electrode ye-copper foil engafanelekanga kwi-separator, ebangela ukuba i-electrode echanekileyo kunye ne-negative i-short-circuit ngqo kwaye ibangele ukuqhuma (akufane kwenzeke).

6. Qhuba xa ukungcangcazela kuwa

Isiqwenga sangaphakathi sesibonda sebhetri sichithwa xa ibhetri ishukunyiswa ngamandla okanye iwa phantsi, kwaye i-short-circuited ngqo kwaye iqhume (inqabile).

Okwesithandathu, i-platform ye-3.6V yebhetri iphantsi

1. Isampuli engachanekanga yekhabhinethi yokukhangela okanye ikhabhinethi yokufumanisa engazinzile ibangele ukuba iqonga lokuvavanya libe liphantsi.

2. Ubushushu be-ambient ephantsi bubangela iqonga eliphantsi (iqonga lokukhutshwa lichaphazeleka kakhulu bubushushu be-ambient)

Zisixhenxe, ezibangelwa kukulungiswa okungafanelekanga

(1) Hambisa i-electrode edibanisa iqhekeza lendawo yokuwelda ngamandla ukuze ubangele uqhagamshelwano olubi lwe-electrode ephilileyo yeseli yebhetri, eyenza ukuxhathisa kwangaphakathi kombindi webhetri kukhulu.

(2) Isiqwenga soqhagamshelo lwendawo yokuwelda ayidityaniswanga ngokuqinileyo, kunye nokumelana nokunxibelelana kukhulu, okwenza ibhetri yangaphakathi ixhathise.