Kalubalen tsarin 800V: Tari na caji don tsarin caji

800V Cajin "Abubuwan Caji"

Wannan labarin yafi magana game da wasu buƙatun farko na tari na caji na 800V, da farko duba ka'idar caji: lokacin da aka haɗa shugaban bindigar caji zuwa ƙarshen abin hawa, cajin tari zai samar da ① ƙarancin wutar lantarki na ƙarin DC ga abin hawa. karshen, don kunna ginanniyar BMS (Tsarin Gudanar da Baturi) na motar lantarki, bayan kunnawa, ② za a haɗa ƙarshen abin hawa zuwa ga Ƙarshen tarawa don musanya ainihin sigogin caji, kamar matsakaicin ƙarfin buƙatar caji na ƙarshen abin hawa da matsakaicin ƙarfin fitarwa na ƙarshen tari, kuma bangarorin biyu za su daidaita daidai.

Bayan an daidaita daidai, na'urar BMS (Battery Management System) a karshen abin hawa za ta aika da bayanin bukatar wutar lantarki zuwa wurin cajin, sannan cajin zai daidaita wutar lantarki da halin yanzu bisa ga wannan bayanin, sannan a hukumance ya fara cajin abin hawa, wanda shine. ainihin ƙa'idar haɗin caji, kuma ya zama dole mu fara sanin kanmu da shi.

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

A ka'ida, muna son 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, to a dabi’ance lokacin cajin zai ragu da rabi; A cewar P=UI, idan an ninka ƙarfin wutar lantarki ko na yanzu, ana iya ninka ƙarfin cajin, kuma an yi ta maimaita hakan, wanda kuma ana ɗaukar hankali.

Idan na yanzu ya fi girma, za a sami matsaloli 2, mafi girma na yanzu, ana buƙatar girma da girma da kebul na yanzu, wanda zai ƙara diamita da nauyin waya, wanda zai kara farashin, kuma a lokaci guda, bai dace da ma'aikata suyi aiki ba; Bugu da kari, bisa ga Q=I²Rt, idan halin yanzu ya kasance mafi girma, mafi girman asarar wutar lantarki, kuma asarar yana nunawa ta hanyar zafi, wanda kuma yana kara matsin lamba akan kula da thermal, don haka ko shakka babu karuwa. cajin wutar lantarki ba kyawawa bane don gane karuwar cajin wutar lantarki ta hanyar ƙara yawan halin yanzu.cajin ƙarar wutar ba kyawawa bane, ba don caji ko tsarin tuƙi a cikin mota ba.

Idan aka kwatanta da babban cajin gaggawa na yanzu, caji mai sauri mai ƙarfi yana haifar da ƙarancin zafi da ƙarancin asara, a halin yanzu, kusan dukkanin manyan kamfanonin kera motoci sun karɓi hanyar haɓaka ƙarfin lantarki, idan aka kwatanta da lokacin caji mai ƙarfi. za a iya taqaitaccen da 50%, da kuma ƙarfin lantarki hažaka za a iya sauƙi ja sama da cajin wuta daga 120KW zuwa 480KW.

800V caji: "Voltage da halin yanzu sun dace da tasirin thermal".

Amma ko ka tada wutar lantarki ko na yanzu, na farko dai, yayin da karfin cajinka ya karu, zafin naka zai bayyana, amma daga karfin wutar lantarki da yanayin bayyanar zafi ba iri daya bane, saurin wasu tasirin da batirin yake yi shine. Har ila yau, dan kadan, jinkirin jinkirin amma zafi da ke ɓoye mafi bayyane na babba kuma ya fi bayyane. Amma na farko ya fi dacewa idan aka kwatanta. 

Kamar yadda na yanzu a cikin madubi ta hanyar ƙananan juriya, yana ƙara hanyar ƙarfin lantarki yana rage girman girman da ake buƙata, yana fitar da zafi kadan, kuma yana haɓaka halin yanzu a lokaci guda, ɓangaren ɓangaren ɓangaren haɓaka na yanzu yana haifar da babban waje. Diamita na kebul na nauyi, yayin da tare da lokacin caji na tsawon zafi zai haɓaka sannu a hankali, ƙarin ɓoye, wannan hanyar baturi shine mafi haɗari.

Cajin 800V: "Caji tara wasu ƙalubale kai tsaye"

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

Idan ka dubi matakin jiki, yayin da ƙarfin lantarki ya karu, ƙirar girman na'urar da ta dace ya kamata ya karu, kamar ta hanyar IEC60664 gurɓataccen matakin 2 rufin kayan abu 1 ana buƙatar nisa na na'ura mai ƙarfin lantarki daga 2mm zuwa 4mm, rufi iri ɗaya. buƙatun juriya za su ƙaru, kusan nisan creepage da buƙatun rufewa ana buƙatar haɓaka da kashi biyu, wanda ke buƙatar ƙarfin lantarki mafi girma a cikin ƙirar da ta gabata.

Wannan yana buƙatar ƙirar tsarin wutar lantarki na baya don sake fasalin girman na'urorin da suka dace, gami da masu haɗawa, layuka na jan ƙarfe, haɗin gwiwa, da sauransu, baya ga haɓakar ƙarfin lantarki kuma zai haifar da buƙatu masu girma don kashe baka, buƙatar wasu na'urori. irin su fuses, akwatunan canzawa, masu haɗawa, da sauransu, don inganta abubuwan da ake buƙata, waɗannan buƙatun kuma sun dace da ƙirar motar.

Babban tsarin caji na 800V mai ƙarfi, kamar yadda aka ambata a sama, yana buƙatar haɓaka tsarin sanyaya ruwa mai aiki na waje, na'urar sanyaya iska ta gargajiya duka biyu masu aiki da sanyaya mai ƙarfi ba za su iya biyan buƙatun layin guntun cajin caji zuwa ƙarshen abin hawa na thermal ba. gudanarwa kuma yana da buƙata fiye da kowane lokaci, kuma wannan ɓangaren tsarin zafin jiki yadda za a rage da sarrafawa daga matakin na'urar da matakin tsarin shine lokaci na gaba don ingantawa da magance matsalar ra'ayi;

Bugu da kari, wannan bangare na zafi ba wai zafin da ake yi ba ne kawai, har ma da zafi da ake samu, wanda ba shi kadai ne na tsarin ba, har ma da zafi da ake samu. Ba wai kawai zafin da ake kawowa ta hanyar caji ba, har ma da zafi da na'urorin wutar lantarki masu yawa ke kawowa, don haka yadda za a yi sa ido na ainihi da kwanciyar hankali, mai tasiri, da aminci don kawar da zafi yana da mahimmanci, wanda ba wai kawai yana da mahimmanci ba. nasarorin kayan aiki amma kuma gano tsarin, kamar cajin zafin jiki na ainihin lokacin da ingantaccen saka idanu.

A halin yanzu a kasuwa DC cajin tari fitarwa irin ƙarfin lantarki ne 400V, kuma ba zai iya kai tsaye zuwa 800V ikon baturi cajin, don haka bukatar wani ƙarin bunkasa DCDC kayayyakin so 400V irin ƙarfin lantarki zuwa 800V, sa'an nan cajin baturi, wanda na bukatar mafi girma ikon high-mita hira, amfani da siliki carbide don maye gurbin tsarin IGBT na gargajiya shine babban zaɓi na hanya, kodayake ƙirar siliki carbide na iya ƙara ƙarfin fitarwa na tari, amma Hakanan don ƙara ƙarfin fitarwa na tarin caji. Kodayake samfuran siliki na siliki na iya haɓaka ikon fitarwa na tari na caji da rage asara, farashin kuma yana ƙaruwa da yawa, kuma buƙatun EMC sun fi girma.

Takaita. Ƙaruwar wutar lantarki za ta kasance a cikin tsarin tsarin kuma matakin na'urar yana buƙatar ingantawa, matakin tsarin ciki har da tsarin kula da zafi, tsarin kariyar caji, da dai sauransu, da kuma matakin na'urar ciki har da wasu na'urorin magnetic da na'urorin wuta don ingantawa.