Lapho uklama noma unweba amasistimu asebenzisa ibhethri, umbuzo ovamile uyaphakama: Ingabe amaphekhi ebhethri amabili anevoltheji efanayo angaxhunywa ochungechungeni? Impendulo emfushane ithiyebo, kodwa ngemfuneko ebalulekile:amandla kagesi okumelana nesekethe yokuvikelakufanele ihlolwe ngokucophelela. Ngezansi, sichaza imininingwane yobuchwepheshe kanye nezinyathelo zokuphepha zokuqinisekisa ukusebenza okuphephile nokuthembekile.
Ukuqonda Imikhawulo: Ukubekezelela Kokubekezelela Kogesi Wesekethe
Amaphekhi ebhethri le-lithium ngokuvamile afakwe Ibhodi Lokuvikeleka Kwesekethe (PCB) ukuze avimbele ukushajwa ngokweqile, ukushajwa ngokweqile, namasekhethi amafushane. Ipharamitha eyinhloko yale PCB yi-I-voltage ukumelana nesilinganiso sama-MOSFET ayo(amaswishi kagesi alawula ukugeleza kwamanje).
Isibonelo sesimo:
Thatha amaphakethe amabili webhethri we-4-cell LiFePO4 njengesibonelo. Iphakethe ngalinye line-voltage yokushaja egcwele engu-14.6V (3.65V iseli ngalinye). Uma ixhunywe ochungechungeni, i-voltage yabo ehlanganisiwe iba29.2V. I-PCB ejwayelekile yokuvikela ibhethri engu-12V ivamise ukuklanywa ngama-MOSFET alinganiselwe35–40V. Kulesi simo, isamba sombane (29.2V) siwela phakathi kwebanga eliphephile, okuvumela amabhethri ukuthi asebenze kahle ochungechungeni.
Ingozi Yokweqa Imikhawulo:
Kodwa-ke, uma uxhuma amaphekhi anjalo amane ochungechungeni, ingqikithi yamandla kagesi izodlula u-58.4V—idlule kude ukubekezelela okungu-35–40V kwama-PCB ajwayelekile. Lokhu kudala ingozi efihliwe:
Isayensi Engemuva Kwengozi
Uma amabhethri exhunywe ochungechungeni, ama-voltage awo ayanda, kodwa amasekhethi okuvikela asebenza ngokuzimela. Ngaphansi kwezimo ezijwayelekile, i-voltage ehlanganisiwe inika amandla umthwalo (isb, idivayisi engu-48V) ngaphandle kwezinkinga. Nokho, umaIphakethe elilodwa lebhethri livusa ukuvikelwa(isb, ngenxa yokukhishwa ngokweqile noma i-overcurrent), ama-MOSFET ayo azonqamula lelo phekhi kusisekethe.
Kuleli qophelo, i-voltage egcwele yamabhethri asele ochungechungeni isetshenziswa kuwo wonke ama-MOSFET anqanyuliwe. Isibonelo, ekusethweni kwamaphekhi amane, i-PCB enqanyuliwe ingabhekana cishe58.4V-idlula isilinganiso sayo esingu-35–40V. Ama-MOSFET angase ahluleke ngenxaukwephulwa kwe-voltage, ikhubaze unomphela isekethe yokuvikela futhi ishiye ibhethri sengozini yezingozi ezizayo.
Izixazululo Zokuxhunywa Kochungechunge Oluphephile
Ukuze ugweme lezi zingozi, landela le mihlahlandlela:
1.Hlola Imininingwane Yomkhiqizi:
Njalo qinisekisa ukuthi i-PCB yokuvikela ibhethri yakho ikalelwe izinhlelo zokusebenza eziwuchungechunge. Amanye ama-PCB aklanywe ngokusobala ukuphatha ama-voltage aphezulu ekucushweni kwamaphekhi amaningi.
2.Ama-PCB Angokwezifiso Anamandla Aphezulu:
Kumaphrojekthi adinga amabhethri amaningi ochungechungeni (isb., isitoreji selanga noma amasistimu e-EV), khetha amasekhethi okuvikela anama-MOSFET enziwe ngokwezifiso anamandla amakhulu. Lezi zingalungiswa ukuze zimelane nenani lamandla kagesi eliphelele lokusethwa kochungechunge lwakho.
3.Idizayini Elinganisiwe:
Qinisekisa ukuthi wonke amaphakethe ebhethri ochungechungeni afaniswa ngomthamo, ubudala, nempilo ukuze kuncishiswe ubungozi bokucushwa okungalingani kwezindlela zokuvikela.
Imicabango yokugcina
Nakuba ukuxhuma amabhethri e-voltage efanayo ochungechungeni kungenzeka ngokobuchwepheshe, inselelo yangempela isekuqinisekiseni ukuthiI-protective circuitry ingakwazi ukubhekana nokucindezeleka kwamandla kagesi. Ngokubeka phambili ukucaciswa kwengxenye nokuklama okusebenzayo, ungakwazi ukukala ngokuphephile amasistimu ebhethri lakho ukuze uthole izinhlelo zokusebenza ezinamandla kagesi.
Kwa-DALY, siyanikelaPCB izixazululo customizableenama-MOSFET anamandla aphezulu ukuze ahlangabezane nezidingo ezithuthukisiwe zokuxhuma uchungechunge. Xhumana nethimba lethu ukuze udizayine isistimu yamandla ephephile, ethembeke kakhudlwana yamaphrojekthi akho!
Isikhathi sokuthumela: May-22-2025
