Ngokwamazinga embonini, amandla okuqamba ngokuvamile amandla amancane, okungukuthi, iqoqo lamabhethri lishajwa ku-CC/CV0.5C ekamelweni lokushisa elingu-25 degrees, bese livunyelwa ukuba liphumule isikhathi esithile (imvamisa amahora angu-12. ). Ukukhishwa ku-3.0V, ukukhishwa okuqhubekayo kwamanje okungu-0.2c (2.75V futhi kuyindinganiso, kodwa umphumela awubalulekile; i-3v kuya ku-2.75V yehla ngokushesha, futhi umthamo mncane), inani lomthamo okhululiwe empeleni inani lomthamo we ibhethri elinomthamo ophansi kakhulu, ngoba iqoqo lamabhethri Kumele kube nomehluko ngamunye. Ngamanye amazwi, umthamo wangempela webhethri kufanele ube mkhulu noma ulingane nomthamo webhethri.

1.18650 inqubo yokushaja ibhethri ye-lithium

Amanye amashaja asebenzisa izixazululo ezishibhile ukuze azuze, ukunemba kokulawula akwanele, kulula ukubangela ukushajwa kwebhethri okungavamile, noma ukulimaza ibhethri. Lapho ukhetha ishaja, zama ukukhetha uhlobo olukhulu lweshaja yebhethri ye-lithium engu-18650, ikhwalithi kanye nokuthengiswa kwangemva kokuthengisa kuqinisekisiwe, futhi impilo yesevisi yebhethri iyanwetshwa. Ishaja yebhethri ye-18650 ye-lithium inezivikelo ezine: ukuvikelwa kwe-short-circuit, ukuvikelwa kwamanje, ukuvikelwa kwe-over-voltage, ukuvikelwa kokuxhumeka kwebhethri okubuyela emuva, njll. ingcindezi iyakhuphuka.

Ngalesi sizathu, idivayisi yokuvikela iqapha umthamo webhethri. Uma ibhethri lishajwe ngokweqile, umsebenzi wokuvikela ukushajwa ngokweqile uyacushwa futhi ukushajwa kuyamiswa. Ukuvikela ukukhishwa ngokweqile: Ukuvimbela ukuphuma ngokweqile kwebhethri ye-lithium, lapho i-voltage yebhethri ye-lithium iphansi kunephoyinti lokutholwa kwe-voltage ekhishwa kakhulu, ukuvikelwa kokukhishwa ngokweqile kuyasebenza futhi ukukhishwa kuyekwa, ukuze Ibhethri isesimweni sokulinda samanje esimile. Ukuvikelwa kwamanje kanye nesekhethi emfushane: Uma ukushajwa kwebhethri le-lithium kukukhulu kakhulu noma kwenzeka i-short-circuit, idivayisi yokuvikela yenza kusebenze umsebenzi wokuvikela wamanje.

Ukulawula ukushaja kwebhethri ye-lithium kuhlukaniswe izigaba ezimbili. Isigaba sokuqala ukushaja kwamanje njalo. Uma i-voltage yebhethri ingaphansi kuka-4.2V, ishaja ishaja ngamandla angaguquki. Isigaba sesibili yisigaba sokushaja i-voltage njalo. Lapho i-voltage yebhethri ingu-4.2 V, ngenxa yezimpawu zamabhethri e-lithium, uma i-voltage iphezulu, izolimala. Ishaja izolungiswa ku-4.2 V futhi amandla okushaja azokwehla kancane kancane. Inani elithile (ngokuvamile ukusetha i-1/10 yamanje), ukunqamula isifunda sokushaja futhi ukhiphe umyalo ophelele wokushaja, ukushaja kuqediwe.

Ukushajwa ngokweqile kanye nokuchichima ngokweqile kwamabhethri e-lithium kuzodala umonakalo unomphela kuma-electrode amahle nangalungile. Ukukhishwa ngokweqile kuzobangela ukuthi ukwakheka kweshidi lekhabhoni ye-anode liwe, ngaleyo ndlela kuvimbele ama-ion e-lithium ukuthi angafakwa phakathi nenqubo yokushaja. Ukushaja ngokweqile kuzobangela ama-ion e-lithium amaningi ukuthi acwile esakhiweni sekhabhoni, amanye awo angeke esakhululwa.

2.18650 Isimiso sokushaja ibhethri ye-Lithium

Amabhethri e-lithium asebenza ngokushaja nokushajwa. Lapho ibhethri lishajwa, ama-ion e-lithium akhiwa ku-electrode ephozithivu yebhethri futhi afinyelele ku-electrode egethivu nge-electrolyte. Ikhabhoni enegethivu igqitshiwe futhi inama-micropores amaningi. Ama-ion e-lithium afinyelela ku-electrode engemihle ashumekwe ezimbotsheni ezincane ze-carbon layer. Uma kufakwa ama-ion e-lithium amaningi, umthamo wokushaja uya mkhulu.

Ngokufanayo, lapho ibhethri likhishwa (njengoba senza ngebhethri), i-lithium ion efakwe kukhabhoni engalungile izophuma futhi ibuyele ku-electrode enhle. Uma ama-ion e-lithium engeziwe abuyela ku-electrode ephozithivu, ayanda amandla okukhipha. Esivame ukukubiza ngokuthi umthamo webhethri umthamo wokuphuma.

Akunzima ukubona ukuthi phakathi nenqubo yokushaja nokukhipha amabhethri e-lithium, i-lithium ion isesimweni sokunyakaza ukusuka ku-electrode enhle kuya ku-electrode engalungile bese kuya ku-electrode enhle. Uma siqhathanisa ibhethri ye-lithium nesihlalo esinyakazayo, iziphetho ezimbili zesihlalo esinyakazayo yizigxobo ezimbili zebhethri, futhi i-lithium ion ifana nomsubathi omuhle kakhulu, ehamba phambili naphambili phakathi kweziphetho ezimbili zesihlalo esinyakazayo. Yingakho ochwepheshe banikeze amabhethri e-lithium igama elithandekayo: amabhethri esihlalo esinyakazayo.