Ucwaningo kuI-Direct CurrentUkumelana,
I-Direct Current,

▍Iyini I-CTIA CERTIFICATION?

I-CTIA, isifinyezo se-Cellular Telecommunications and Internet Association, yinhlangano yomphakathi engenzi nzuzo eyasungulwa ngo-1984 ngenjongo yokuqinisekisa ukuhlomula kwabaqhubi, abakhiqizi nabasebenzisi. I-CTIA iqukethe bonke opharetha base-US nabakhiqizi abavela kumasevisi omsakazo weselula, kanye namasevisi edatha angenantambo nemikhiqizo. Isekelwe yi-FCC (Federal Communications Commission) kanye neCongress, i-CTIA yenza ingxenye enkulu yemisebenzi nemisebenzi eyayisetshenziselwa ukwenziwa uhulumeni. Ngo-1991, i-CTIA yakha uhlelo lokuhlola lomkhiqizo olungachemile, oluzimele nolwendawo eyodwa kanye nesitifiketi somkhakha ongenazintambo. Ngaphansi kwesistimu, yonke imikhiqizo engenantambo esebangeni labathengi izothatha izivivinyo zokuthobela imithetho futhi leyo ethobelana namazinga afanele izovunyelwa ukusebenzisa ukumaka kwe-CTIA nokushayisana kwamashalofu ezitolo emakethe yezokuxhumana yaseNyakatho Melika.

I-CATL (CTIA Authorized Testing Laboratory) imele amalebhu agunyazwe yi-CTIA ukuze ahlolwe futhi abuyekezwe. Imibiko yokuhlola ekhishwe ku-CATL izogunyazwa yonke yi-CTIA. Nakuba eminye imibiko yokuhlola kanye nemiphumela evela ku-non-CATL ngeke ibonwe noma ingakwazi ukufinyelela ku-CTIA. I-CATL egunyazwe yi-CTIA iyahlukahluka ezimbonini nasekutholeni izitifiketi. I-CATL kuphela efanelekela ukuhlolwa nokuhlolwa kokuthobela ibhethri ekwazi ukufinyelela esitifiketini sebhethri ukuze ihambisane ne-IEEE1725.

▍CTIA Amazinga Wokuhlola Ibhethri

a) Isidingo Sokuthola Isitifiketi Sohlelo Lwebhethri Ukuthobela IEEE1725— Kusebenza Ezinhlelweni Zebhethri ezineseli elilodwa noma amaseli amaningi axhunywe ngokuhambisana;

b) Isidingo Sokuthola Isitifiketi Sohlelo Lwebhethri Ukuthobelana ne-IEEE1625— Kusebenza Ezinhlelweni Zebhethri ezinamaseli amaningi axhunywe ngokuhambisana noma kokubili okuhambisanayo nochungechunge;

Amathiphu afudumele: Khetha ngenhla kwamazinga wesitifiketi ngokufanelekile kumabhethri asetshenziswa omakhalekhukhwini namakhompyutha. Ungasebenzisi kabi i-IEE1725 kumabhethri kumakhalekhukhwini noma i-IEEE1625 kumabhethri akukhompyutha.

▍Kungani i-MCM?

●Ubuchwepheshe obuqinile:Kusukela ngo-2014, i-MCM ibihambela inkomfa yamaphakethe webhethri ebanjwa yi-CTIA e-US minyaka yonke, futhi iyakwazi ukuthola isibuyekezo sakamuva futhi iqonde amathrendi enqubomgomo emisha mayelana ne-CTIA ngendlela esheshayo, enembayo nesebenzayo.

●Ukufaneleka:I-MCM iyi-CATL egunyazwe yi-CTIA futhi ifaneleka ukwenza zonke izinqubo ezihlobene nesitifiketi okuhlanganisa ukuhlola, ukuhlola kwasefekthri nokulayisha umbiko.

Ngesikhathi sokushaja nokukhipha amabhethri, amandla azothonywa ukugcwala ngokweqile okubangelwa ukumelana kwangaphakathi. Njengepharamitha ebalulekile yebhethri, ukumelana kwangaphakathi kuwufanele ucwaningo ukuze kuhlaziywe ukuwohloka kwebhethri. Ukumelana kwangaphakathi kwebhethri kuqukethe:
I-Ohm Ukumelana kwangaphakathi (RΩ) -Ukumelana namathebhu, i-electrolyte, isihlukanisi nezinye izakhi.Izindleko zokudlulisa ukumelana kwangaphakathi (Rct) - Ukumelana namathebhu adlula ama-ion kanye ne-electrolyte. Lokhu kumelela ubunzima bokusabela kwamathebhu. Ngokujwayelekile singakwazi ukwandisa ukuqhutshwa kokunciphisa lokhu kumelana.I-Polarization Resistance (Rmt) ukumelana kwangaphakathi okubangelwa ukuminyana okungalingani kwe-lithium ion phakathi kwe-cathode ne-anode. I-Polarization Resistance izoba phezulu ezimeni ezifana nokushajwa kwezinga lokushisa eliphansi noma inkokhiso enesilinganiso esiphezulu.Ngokujwayelekile sikala i-ACIR noma i-DCIR. I-ACIR ukumelana kwangaphakathi kukalwa ngo-1k Hz AC wamanje. Lokhu kumelana kwangaphakathi kwaziwa nangokuthi ukumelana kwe-Ohm. Ukushoda kwedatha ukuthi ayikwazi ukukhombisa ngqo ukusebenza kwebhethri. I-DCIR ikalwa ngokuphoqwa okungaguquki kwamandla ngesikhathi esifushane, lapho i-voltage ishintsha njalo. Uma i-current esheshayo ithi I, futhi ukushintsha kwamandla kagesi kuleso sikhathi esifushane kungu-ΔＵ, ngokomthetho we-OhmＲ＝ΔＵ／Ｉ Singathola i-DCIR. I-DCIR ayimayelana nokumelana ne-Ohm kwangaphakathi kuphela, kodwa futhi ukumelana nokushaja ukudluliswa kanye nokumelana ne-polarization.Kuhlala kuwubunzima ocwaningweni lwe-DCIR yebhethri ye-lithium-ion. Ikakhulukazi kungenxa yokuthi ukumelana kwangaphakathi kwebhethri le-lithium-ion kuncane kakhulu, ngokuvamile i-mΩ ethile. Okwamanje njengengxenye esebenzayo, kunzima ukukala ukumelana kwangaphakathi ngokuqondile. Ngaphandle kwalokho, ukumelana kwangaphakathi kuthonywa isimo sendawo, njengezinga lokushisa nesimo sezindleko. Ngezansi kunamazinga ashiwo mayelana nendlela yokuhlola i-DCIR.