Ukuklama Nokukhiqizwa Kwamabhethri Anamandla Aphezulu Ama-Smartphones
Izidingo zabasebenzisi be-smartphone ziyaqhubeka nokukhula: izikrini ezinkulu, amazinga aphezulu okuvuselela, ukuxhumana kwe-5G, amakhamera anesinqumo esiphezulu, kanye nezinhlelo zokusebenza ezahlukahlukene ezisebenza usuku lonke. Konke lokhu kwandisa ukusetshenziswa kwamandla. Ngakho-ke, amabhethri amakhulu abe ngesinye sezikhali eziyinhloko zabakhiqizi zokuthuthukisa ulwazi lomsebenzisi. Kodwa-ke, ukwandisa umthamo webhethri akulula njengokukhulisa usayizi obonakalayo. Kunezinselele ekwakhiweni, ezintweni zokwakha, ekuphepheni, ezindleleni, nasezinqubweni zokukhiqiza eziyinkimbinkimbi. Lesi sihloko sixoxa ngendlela amabhethri amakhulu ama-smartphone aklanywa futhi akhiqizwa ngayo, kusukela ezicini zobuchwepheshe kuya emikhubeni yezimboni.
1. Kusho ukuthini ngokuthi “Ibhethri Elinamandla Amakhulu”?
Umthamo webhethri ngokuvamile ulinganiswa ngamahora angama-milliampere (mAh) noma amahora ama-watt (Wh). Kuma-smartphone anamuhla, amandla "amakhulu" avame ukuba phakathi kuka-5.000 mAh nangaphezulu, kanti amanye amamodeli afinyelela ku-6.000–7.000 mAh. Kodwa-ke, isibalo se-mAh asibonisi njalo amandla angempela uma i-voltage evamile ihlukile. Ngakho-ke, abakhiqizi bavame ukufaka i-Wh ukuze kuqhathaniswe kahle. Ngaphandle komthamo, ezinye izindlela ezibalulekile ubuningi bamandla (ukuthi angakanani amandla agcinwa ngevolumu noma isisindo ngasinye) kanye nobuningi bamandla (ikhono lokuletha amandla aphezulu ngesikhathi semithwalo ephezulu, njengokudlala imidlalo).
2. Izimiso Eziyisisekelo Zamabhethri E-Smartphone
Ama-smartphone amaningi asebenzisa amabhethri e-Lithium-ion (Li-ion) noma e-Lithium-polymer (Li-Po). Igama elithi "polymer" livame ukubhekisela ekupakishweni kwesikhwama esincane nesiguquguqukayo, kodwa akusho ukuthi kukhona ukwakheka kwamakhemikhali okuhluke ngokuphelele. Ngokuvamile, amabhethri aqukethe:
– I-Anode (ngokuvamile i-graphite, ngezinye izikhathi i-silicon iyanezelwa ukwandisa amandla),
– I-Cathode (isib. i-NMC/NCA esekelwe ku-nickel, noma i-LCO kweminye imiklamo),
– Ama-electrolyte (uketshezi noma amajeli athwala ama-ion e-lycium),
– Isihlukanisi (sihlukanisa i-anode ne-cathode ukuvimbela ama-short circuits),
- Umqoqi wamanje kanye nethebhu,
– Ukupakisha (isikhwama esifakwe i-aluminium).
Ukwandisa umthamo kusho ukwandisa inani lezinto ezisebenzayo ezingagcina ama-ion e-lithium, ngenkathi kugcinwa ukuphepha, ukuqina komjikelezo, kanye nosayizi ofanele imizimba yama-smartphone ekhula kancane.
3. Izici Zokuklama: Phakathi Kokuncane, Okukhanyayo, Nokuphephile
a) Isikhala sangaphakathi se-smartphone
Ibhethri liyisici esikhulu kunazo zonke kumafoni amaningi. Abaklami bemishini kumele "bahlele" isikhala nezinye izingxenye: i-motherboard, i-module yekhamera, izikhulumi, ama-haptic motors, isistimu yokupholisa, kanye nama-antenna. Ukuze kufezwe umthamo omkhulu kangaka, abakhiqizi bavame:
– Khulisa indawo yebhethri (sondela ngesimo "L" noma "sesinyathelo" ngokwesikhala),
– Isikhala esingenalutho esinciphile (ukubekezelelana kwemishini kuncishisiwe),
– Kuthuthwe ukwakheka kwebhodi elihlanganisiwe ukuze kwenziwe isikhala esengeziwe sebhethri.
b) Ubukhulu be-electrode kanye nobuningi bamandla
Umthamo uyanda njengoba umthwalo wezinto ezisebenzayo ku-electrode ukhula. Kodwa-ke, ama-electrode aminyene kakhulu angavimbela ukusabalala kwama-ion, andise ukumelana kwangaphakathi, akhiqize ukushisa, futhi anciphise ukusebenza kuma-currents aphezulu. Ngakho-ke, imiklamo emikhulu yebhethri kumele ilinganisele:
– Ubukhulu besendlalelo se-anode/cathode,
- Ukuqina kwe-electrode,
- Ukwakheka kwesithasiselo se-binder kanye ne-conductive,
– Ukwakheka kwethebhu (amathebhu amaningi ukuze kuncishiswe ukumelana).
c) Ukuphathwa kokushisa
Amabhethri amakhulu agcina amandla amaningi, ngakho-ke imiphumela yokushisa nokwehluleka nayo imbi kakhulu. Amafoni esimanje asebenzisa izinto zokushisa (amashidi e-graphite, amakamelo omusi, noma ama-heat spreader) ukuze akhiphe ukushisa okuvela ku-SoC futhi ngesikhathi esifanayo avimbele ibhethri ukuthi lingahlangabezani namazinga okushisa aphezulu. Ngokuklanywa, ibhethri kumele ibekwe kude nemithombo emikhulu yokushisa.
d) I-voltage yeseli kanye nokucushwa kwayo
Ama-smartphone amaningi asebenzisa iseli elilodwa eline-voltage elinganiselwe engaba ngu-3,85 V (kuye ngokuthi i-chemistry isebenza kanjani). Ukuze kushajwe ngokushesha, abanye abakhiqizi basebenzisa ukwakheka kwamaseli amabili (isb., amaseli amabili alandelanayo noma ahambisanayo) ukunciphisa ukudlula kwamandla kagesi kuseli ngalinye nokwenza ukushaja kuphephe futhi kusebenze kahle. Amaseli amabili enza kube lula futhi ukufeza amandla aphezulu ngesivinini esikhulu sokushaja ngaphandle kokusebenza ngokweqile kweseli elilodwa.
4. Ikhemistri Nezinto Ezisetshenziswayo: Indlela Yokukhulisa Amandla
a) I-cathode ephezulu ye-nickel (NMC/NCA)
Ama-cathode ane-nickel ephezulu anganikeza amandla amaningi. Kodwa-ke, izinselele zifaka phakathi ukuzinza kokushisa kanye nokuwohloka. Lokhu kudinga ukulawulwa okuqinile kokukhiqiza, izithasiselo ze-electrolyte, kanye nomklamo wokuvikela oqinile.
b) I-Graphite + i-silicon anode
I-silicon ingagcina i-lithium eningi kakhulu kune-graphite, kodwa iyakhula ngesikhathi sokushaja, iqhekeke kalula futhi inciphise isikhathi sayo sokuphila. Isixazululo sezimboni ngokuvamile siyi-graphite efakwe i-silicon (inani elincane le-silicon elixutshwe) ukuze kwandiswe umthamo ngaphandle kokubeka engcupheni impilo yomjikelezo.
c) Ama-electrolyte kanye nezithasiselo
Ama-electrolyte anamuhla asebenzisa izithasiselo ukwakha ungqimba oluqinile lwe-electrolyte interphase (SEI), okunciphisa ukushaja kwegesi, ukuthuthukisa ukuphepha, nokugcina ukusebenza kokushaja okusheshayo. Amabhethri amakhulu athembele kakhulu ekwakhiweni kwe-electrolyte okunembile ngoba ingcindezi yangaphakathi kanye nengozi yokuvuvukala kuyanda ngosayizi namandla.
5. Isekethe Yokuvikela kanye ne-BMS ku-Smartphone
Nakuba amaseli ebhethri ebalulekile, ukuphepha kuncike kakhulu ezinhlelweni zikagesi:
– I-IC Yokuvikela (ukushaja ngokweqile, ukukhipha ngokweqile, ukushaja ngokweqile),
– I-NTC/i-thermistor yokuqapha izinga lokushisa,
– I-algorithm yokushaja (i-CC-CV) kanye nomkhawulo wamanje osekelwe ekushiseni,
– Linganisa umthamo (igeyiji kaphethiloli) ukuze iphesenti lebhethri libe elinembile.
Amabhethri amakhulu adinga ama-algorithms ahlakaniphile ukuze alondoloze impilo, isibonelo izici zokuphathwa kwempilo yebhethri, ukukhawulela ukushaja ku-80-90% lapho umsebenzisi esebenzisa imodi yokuvikela, noma ukushaja okuguquguqukayo ebusuku.
6. Inqubo Yokukhiqiza: Kusukela Ezintweni Zokusetshenziswa Ezingavuthiwe Kuya Kumaseli Ebhethri
Ukukhiqizwa kwebhethri le-Li-ion kuyimboni enembile enezigaba eziningi:
a) Ukwenza udaka
Izinto ezisebenzayo (i-cathode/anode), i-binder, i-solvent, kanye nezithasiselo eziqhuba ugesi zixutshwa zibe yi-slurry. Isilinganiso sokuxuba sithinta amandla, ukumelana, kanye nokuqina. Ukuvumelana kwe-slurry kumele kuzinzile ukuze kugwenywe ukwehluka kokusebenza phakathi kwamaseli.
b) Ukumboza nokomisa
I-slurry imbozwa ku-foil yokuqoqa yamanje (i-aluminium ye-cathode, ithusi ye-anode). Bese iyomiswa ukuze i-solvent iphele. Lesi sinyathelo sibalulekile ngoba ukungalingani kokugqoka kungabangela izindawo ezishisayo kanye nomthamo ophansi.
c) Ukubhala Ikhalenda
Ama-electrode ahlanganiswe nge-roller ukulawula ukujiya kanye nobuningi. Ukulinganisa kwandisa ubuningi bamandla, kodwa ukuqina ngokweqile kunganciphisa ukugoba futhi kuphazamise ukusabalala kwama-ion.
d) Ukusika nokusika
Ama-electrode asikwa ngosayizi. Ukuhlanzeka kwemiphetho esikiwe kubalulekile; izinhlayiya ezincane zensimbi noma ama-burrs kungabangela ukufiphaza kwangaphakathi.
e) Ukugoqa noma ukusonga
Kumaseli esikhwama se-smartphone, ama-electrode kanye nama-separator ayabekwa noma asongwe (i-jelly roll). Ama-Smartphone ngokuvamile abeka phambili amafomu amancane nakhethekile, ngakho-ke amasu okubeka avame kakhulu ukukhulisa ukusetshenziswa kwesikhala.
f) Ukufakwa kwamathebhu nokuvalwa kwawo
Amathebhu e-anode/cathode ayashintshwa, bese iseli lifakwa ephaketheni lesikhwama bese livalwa kancane.
g) Ukugcwaliswa kwe-electrolyte kanye nokuvalwa kwe-vacuum
I-electrolyte iyafakwa, umoya uyasuswa (i-vacuum), bese isikhwama sivalwa kahle. Ukungcola kwamanzi kumele kube kuncane kakhulu ngoba amanzi ayasabela ne-electrolyte, akhiqize igesi futhi abeke engcupheni ukuphepha.
h) Ukwakheka nokuguga
Amaseli adlula emjikelezweni wokuqala wokushaja (ukwakheka) ukuze athuthukise ungqimba lwe-SEI. Lena inqubo ende futhi ebiza kakhulu, kodwa inquma ikhwalithi. Ngemva kwalokho, ukuguga kwenziwa ukuqinisekisa ukuqina kwamandla kagesi nokuthola amaseli anephutha.
i) Ukuhlolwa kwamagredi nokulawulwa kwekhwalithi
Amaseli ahlolwa umthamo, ukumelana kwangaphakathi, ukuvuza, ukuzikhipha, kanye nokusabela kwezinga lokushisa. Amaseli abe esehlelwa ukuze kuqinisekiswe ukuthi amabhethri ahlala njalo.
7. Izinselele Ezinkulu Eziqondene Nebhethri: Ukuvuvukala Nokuqina Komjikelezo
Uma amandla ephezulu, ukulawula ikhwalithi kuba okubaluleke kakhulu. Izinkinga ezimbili abasebenzisi abavame ukuzixoxa yilezi:
– Ukuwohloka: amandla ayancipha ngemva kwamakhulu emijikelezo ngenxa yokukhula kwe-SEI, ukuqhekeka kwe-electrode, noma ukusetshenziswa kwe-lium okusebenzayo.
– Ukuvuvukala: kungenzeka ngenxa yokwakheka kwegesi ngenxa yokusabela okungekuhle, amazinga okushisa aphezulu, noma ukugcwaliswa okungafanele.
Ukuze kuvinjelwe lokhu, abakhiqizi benza ngcono izithasiselo ze-electrolyte, bakhethe izinto ezizinzile kakhudlwana, bathuthukise ukulawulwa komswakama wefektri, futhi bathuthukise ama-algorithms okushaja ukuze angabi nolaka kakhulu emazingeni okushisa aphezulu.
8. Ukushaja Okusheshayo Nomthamo Omkhulu: Kufanele Kuhambisane
Umthamo omkhulu uvame ukuhambisana nesidingo sokushaja okusheshayo. Kodwa-ke, ukushaja okusheshayo kwandisa amazinga okushisa futhi kusheshise ukuwohloka uma kungaklanywanga kahle. Izixazululo zifaka:
- Ukwakhiwa kwamaseli amabili,
– Ishaja enohlelo oluhle lokuxhumana (i-PD/PPS noma iphrothokholi eyimfihlo),
– Izinzwa zokushisa ezimbili (esitokisini kanye nasebhodini elikhulu),
– Ijika lokushaja elinezinyathelo kanye nomkhawulo wamandla aguquguqukayo.
9. Iziqondiso Zesikhathi Esizayo: Ukuya Kumabhethri Aqinile Naphephile
Izinto ezintsha eziqhubekayo ukuthuthukiswa zifaka:
– Ukwandisa ingxenye ye-silicon ku-anode ngama-nanostructures amasha noma ama-binder,
– I-Cathode enokuqina okuphezulu kanye nokuqukethwe okuphansi kwe-cobalt,
- Isihlukanisi esimelana nokushisa kanye ne-electrolyte,
– Amandla okushintshela esimweni esiqinile (ama-electrolyte aqinile) esikhathini eside, yize isabhekene nezinselele zezindleko, ukukhiqizwa ngobuningi, kanye nokusebenza kwezinga lokushisa eliphansi.
Isiphetho
Ukuklama nokukhiqizwa kwamabhethri anomthamo ophezulu wama-smartphone kuyinhlanganisela eyinkimbinkimbi yobunjiniyela bezinto zokwakha, imishini, izinto zikagesi, kanye nokukhiqizwa okunembile. Umthamo ophezulu awugcini nje ngokwandisa i-mAh, kodwa futhi ngokugcina ukuminyana kwamandla, ukuphepha, ukuphathwa kokushisa, kanye nokuphila isikhathi eside ukuze kuhlangatshezwane nezidingo zabasebenzisi banamuhla. Ngokuthuthuka kwezinto ezifana nama-cathode aphezulu e-nickel kanye nama-anode e-graphite-silicon, kuhlanganiswe nokusungula izinto ezintsha ezakhiweni zamaseli amabili kanye nama-algorithms okushaja aguquguqukayo, ama-smartphone anamuhla anganikeza impilo yebhethri ende ngaphandle kokudela ukulula nokuphepha. Ukuya phambili, ukuncintisana kuzodlula "izinombolo zomthamo" kuphela, kodwa futhi nokuthi abakhiqizi balinganisela kahle kangakanani umthamo, isivinini sokushaja, impilo yebhethri, kanye nokuphepha kumadivayisi aqinile.
