Kalubalen tsarin 800V: tari na caji don tsarin caji

800V Tarin Cajin "Tsarin Cajin"

Wannan labarin yafi magana game da wasu buƙatun farko na 800Vcaji tara, da farko bari mu kalli ka'idar caji: Lokacin da aka haɗa tip ɗin caji zuwa ƙarshen abin hawa, cajin tari zai samar da (1) ƙaramin ƙarfin wutar lantarki na DC zuwa ƙarshen abin hawa don kunna ginanniyar BMS (tsarin sarrafa batir) na motar lantarki Bayan kunnawa, (2) haɗa ƙarshen mota zuwa ƙarshen cajin abin hawa, musayar matsakaicin matsakaicin matsakaicin matsakaicin cajin abin hawa. Ƙarfin fitarwa na ƙarshen tari, bayan an daidaita bangarorin biyu daidai, BMS (tsarin sarrafa baturi) na ƙarshen abin hawa zai aika bayanin buƙatar wutar lantarki zuwa gaev caji tashar, da kumatulin cajin motar lantarkizai daidaita wutar lantarkin nasa da na yanzu bisa ga wannan bayanin, sannan a hukumance ya fara cajin abin hawa, wanda shine ainihin ka'idar.haɗin caji, kuma muna bukatar mu saba da shi tukuna.

800V caji: "ƙarfafa ƙarfin lantarki ko halin yanzu"

A ka'ida, idan muna so mu samar da wutar lantarki don rage lokacin caji, yawanci akwai hanyoyi guda biyu: ko dai ka ƙara baturi ko ƙara ƙarfin lantarki; A cewar W=Pt, idan aka ninka karfin caji sau biyu, lokacin cajin zai ragu da rabi; A cewar P=UI, idan an ninka ƙarfin lantarki ko na yanzu, ana iya ninka ƙarfin caji sau biyu, wanda aka ambata akai-akai kuma ana ɗaukar hankali.

Idan na yanzu ya fi girma, za a sami matsaloli guda biyu, mafi girma na yanzu, mafi girma da girma da kebul ɗin da ke buƙatar halin yanzu, wanda zai ƙara diamita da nauyin waya, ƙara farashi, kuma bai dace da ma'aikata suyi aiki ba; Bugu da ƙari, bisa ga Q=I²Rt, idan na yanzu ya fi girma, asarar wutar lantarki ya fi girma, kuma asarar yana nunawa ta hanyar zafi, wanda kuma yana ƙara matsi na sarrafa wutar lantarki, don haka ko shakka babu bai da kyau a ƙara ƙarfin caji ta hanyar ƙara yawan halin yanzu, ko caji ne ko tsarin tuki a cikin mota.

Idan aka kwatanta da babban caji mai sauri na yanzu,high-voltage mai sauri cajiyana haifar da ƙarancin zafi da raguwar asara, kuma kusan kamfanonin mota na yau da kullun sun karɓi hanyar ƙara ƙarfin lantarki, idan aka kwatanta da caji mai sauri mai ƙarfi, a ka'idar za a iya rage lokacin caji da kashi 50%, haɓakar ƙarfin lantarki kuma yana iya ƙara ƙarfin caji daga 120KW zuwa 480KW cikin sauƙi.

800V caji: "Thermal effects m ga ƙarfin lantarki da halin yanzu"

Amma ko yana ƙara ƙarfin wutar lantarki ne ko ƙara ƙarfin halin yanzu, da farko, da ƙãra ƙarfin cajin ku, zafin ku zai bayyana, amma bayyanar thermal na ƙara ƙarfin lantarki da haɓaka halin yanzu ya bambanta. Koyaya, tsohon ya fi dacewa idan aka kwatanta.

Saboda ƙarancin juriya da na yanzu ke fuskanta lokacin wucewa ta hanyar jagorar, hanyar haɓaka ƙarfin lantarki yana rage girman girman kebul ɗin da ake buƙata, kuma zafin da za a watsar ya ragu, kuma yayin da ake ƙara haɓaka yanzu, haɓakar yanki mai ɗaukar hoto na yanzu yana kaiwa ga diamita mafi girma na waje da babban nauyin na USB, kuma zafi zai ƙara sannu a hankali tare da tsawaita lokacin caji, wanda shine mafi haɗari ga baturi.

Cajin 800V: "Wasu ƙalubale na gaggawa tare da tarin caji"

Cajin sauri na 800V shima yana da wasu buƙatu daban-daban a ƙarshen tari:

Idan daga ra'ayi na zahiri, tare da haɓakar ƙarfin lantarki, ƙirar ƙirar na'urorin da ke da alaƙa za su ƙara haɓaka, alal misali, bisa ga matakin gurɓataccen iska na IEC60664 shine 2 kuma nisa na rukunin kayan rufin shine 1, nisa na na'ura mai ƙarfin lantarki yana buƙatar zama daga 2mm zuwa 4mm, kuma daidaitaccen buƙatun rufin yana buƙatar haɓaka buƙatun nisa zuwa kusan buƙatun da ake buƙata don haɓaka buƙatun. sake tsarawa a cikin zane idan aka kwatanta da tsarin tsarin wutar lantarki na baya, ciki har da masu haɗawa, sandunan jan karfe, masu haɗawa, da dai sauransu Bugu da ƙari, haɓakar ƙarfin lantarki zai haifar da mafi girma da buƙatu don kashe baka, kuma ya zama dole don ƙara yawan bukatun wasu na'urori irin su fis, akwatunan canzawa, masu haɗawa, da sauransu.

Babban tsarin caji na 800V yana buƙatar ƙara tsarin sanyaya ruwa mai aiki na waje kamar yadda aka ambata a sama, kuma sanyin iska na gargajiya ba zai iya biyan buƙatun ba ko yana aiki ko sanyaya mai ƙarfi, da kuma kula da thermal.tashar cajin motar lantarkilayin bindiga har zuwa karshen abin hawa shima ya fi na da, da yadda ake ragewa da sarrafa zafin wannan bangare na tsarin daga matakin na'urar da matakin tsarin shi ne batun ingantawa da warware shi ta kowane kamfani a nan gaba; Bugu da kari, wannan bangare na zafi ba kawai zafi da ake kawowa ta hanyar caji mai yawa ba, har ma da zafi da na'urorin wutar lantarki masu ƙarfi ke kawowa, don haka yadda za a yi saka idanu na ainihi da kwanciyar hankali, inganci da aminci don kawar da zafi yana da matukar muhimmanci, wanda ba kawai nasara ba ne a cikin kayan, amma kuma gano tsarin tsari, irin su ainihin lokaci da kuma kula da yanayin zafi.

A halin yanzu, ƙarfin fitarwa naDC na caji taraA kasuwa shine ainihin 400V, wanda ba zai iya cajin baturin wutar lantarki na 800V kai tsaye ba, don haka ana buƙatar ƙarin haɓaka samfurin DCDC don haɓaka ƙarfin lantarki na 400V zuwa 800V, sannan cajin baturin, wanda ke buƙatar babban iko da sauyawa mai girma, da kuma tsarin da ke amfani da silicon carbide don maye gurbin IGBT na gargajiya shine zaɓi na yau da kullun, kodayake Silicon na iya rage ƙarfin wutar lantarki na lodawa zuwa 800V. Hakanan farashin ya fi girma, kuma buƙatun EMC su ma sun fi girma.

Don taƙaita shi. Ainihin, haɓakar ƙarfin lantarki zai buƙaci ƙarawa a matakin tsarin da matakin na'ura, gami da tsarin sarrafa zafin jiki, tsarin kariyar caji, da sauransu, kuma matakin na'urar ya haɗa da haɓaka wasu na'urorin magnetic da na'urorin wuta.