Kafukufuku paDirect Currentkukaniza,
Direct Current,

▍Kodi CTIA CERTIFICATION ndi chiyani?

CTIA, chidule cha Cellular Telecommunications and Internet Association, ndi bungwe lopanda phindu lomwe linakhazikitsidwa mu 1984 ndi cholinga chotsimikizira phindu la ogwira ntchito, opanga ndi ogwiritsa ntchito. CTIA ili ndi onse ogwira ntchito ku US ndi opanga kuchokera ku mawayilesi a m'manja, komanso kuchokera ku ma data opanda zingwe ndi zinthu zopangidwa. Mothandizidwa ndi FCC (Federal Communications Commission) ndi Congress, CTIA imachita gawo lalikulu la ntchito ndi ntchito zomwe zidagwiritsidwa ntchito ndi boma. Mu 1991, CTIA idapanga njira yowunikira zinthu mosakondera, yodziyimira payokha komanso yapakati pamakampani opanda zingwe. Pansi pa dongosololi, zinthu zonse zopanda zingwe zomwe zili mugulu la ogula zidzayesa kutsata ndipo omwe akutsatira miyezo yoyenera adzaloledwa kugwiritsa ntchito chizindikiro cha CTIA ndikugundika mashelefu amsika amsika waku North America.

CATL (CTIA Authorized Testing Laboratory) imayimira ma lab ovomerezeka ndi CTIA kuti ayesedwe ndikuwunikanso. Malipoti oyezetsa ochokera ku CATL onse avomerezedwa ndi CTIA. Pomwe malipoti ena oyezetsa ndi zotsatira zochokera kwa omwe si a CATL sizidziwika kapena kukhala ndi mwayi wopeza CTIA. CATL yovomerezeka ndi CTIA imasiyanasiyana m'mafakitale ndi ma certification. CATL yokhayo yomwe ili yoyenera kuyezetsa kutsata batire ndikuwunika yomwe ili ndi mwayi wopeza satifiketi ya batri kuti igwirizane ndi IEEE1725.

▍CTIA Battery Testing Standards

a) Chofunikira Pachiphaso cha Battery System Kutsata IEEE1725- Imagwira Ntchito ku Ma Battery Systems okhala ndi cell imodzi kapena ma cell angapo olumikizidwa mofanana;

b) Chofunikira Pachiphaso cha Battery System Kutsata IEEE1625- Imagwira Ntchito ku Ma Battery Systems okhala ndi ma cell angapo olumikizidwa mofananira kapena mofananira ndi mndandanda;

Malangizo ofunda: Sankhani pamwamba pa ziphaso zotsimikizika zamabatire omwe amagwiritsidwa ntchito m'mafoni am'manja ndi makompyuta. Osagwiritsa ntchito molakwika IEE1725 pamabatire amafoni am'manja kapena IEEE1625 pamabatire apakompyuta.

▍ Chifukwa chiyani MCM?

●Ukadaulo Wolimba:Kuyambira 2014, MCM yakhala ikupezeka pa msonkhano wa batri pack womwe umachitika ndi CTIA ku US chaka chilichonse, ndipo imatha kupeza zosintha zaposachedwa ndikumvetsetsa malingaliro atsopano okhudza CTIA mwachangu, molondola komanso mwachangu.

●Zoyenereza:MCM ndi CATL yovomerezeka ndi CTIA ndipo ndi woyenerera kuchita njira zonse zokhudzana ndi certification kuphatikiza kuyesa, kufufuza fakitale ndi kukweza malipoti.

Pa kulipiritsa ndi kutulutsidwa kwa mabatire, mphamvuyo idzakhudzidwa ndi kuwonjezereka kwa mphamvu chifukwa cha kukana kwa mkati. Monga gawo lofunikira la batri, kukana kwamkati ndikofunikira kufufuza pakuwunika kuwonongeka kwa batri. Mphamvu ya mkati mwa batire ili ndi:
Ohm kukana kwamkati (RΩ) -Kukaniza kuchokera ku ma tabo, electrolyte, separator ndi zigawo zina.Malipiro opatsirana mkati kukana (Rct) - Kukana kwa ma ion kudutsa ma tabo ndi electrolyte. Izi zikuyimira zovuta zamachitidwe a ma tabo. Kawirikawiri tikhoza kuonjezera ma conductivity kuti tichepetse kukana uku.Polarization Resistance (Rmt) ndi kukana kwamkati chifukwa cha kusagwirizana kwa lithiamu ions pakati pa cathode ndi anode. Polarization Resistance idzakhala yapamwamba kwambiri ngati kulipiritsa kutentha kochepa kapena mtengo wapamwamba kwambiri. Nthawi zambiri timayesa ACIR kapena DCIR. ACIR ndiye kukana kwamkati komwe kuyezedwa mu 1k Hz AC pano. Kukana kwamkati kumeneku kumadziwikanso kuti Ohm resistance. Kuperewera kwa deta ndikuti sikungathe kuwonetsa mwachindunji ntchito ya batri. DCIR imayesedwa ndi kukakamizidwa kosalekeza mu nthawi yochepa, momwe magetsi amasinthira mosalekeza. Ngati nthawi yomweyo ndi ine, ndipo kusintha kwa magetsi mu nthawi yochepayi ndi ΔＵ, malinga ndi lamulo la OhmＲ＝ΔＵ／Ｉ Titha kupeza DCIR. DCIR sikuti imangokhala kukana kwa Ohm mkati, komanso kuletsa kusamutsa komanso kukana kwa polarization. Nthawi zonse zimakhala zovuta pa kafukufuku wa DCIR wa batri ya lithiamu-ion. Makamaka chifukwa kukana kwamkati kwa batri ya lithiamu-ion ndikochepa kwambiri, nthawi zambiri kungokhala mΩ. Pakalipano monga gawo logwira ntchito, ndizovuta kuyeza kukana kwamkati mwachindunji. Kupatula apo, kukana kwamkati kumatengera momwe chilengedwe chimakhalira, monga kutentha ndi kuchuluka kwa ndalama. Pansipa pali miyezo yomwe yanena za momwe mungayesere DCIR.