Pakati paChotenthetsera cha Ev PTCImadalira mawonekedwe a PTC positive temperature coefficient thermistor, kuphatikiza ndi high-voltage power supply system ndi thermal management circuit ya magalimoto amagetsi kuti itenthe. Kwenikweni, mphamvu zamagetsi zimasinthidwa mwachindunji kukhala mphamvu yotentha, kenako zimasamutsidwa kupita ku cabin kapena batri kudzera mu sing'anga (coolant/air). Imakhala ndi makhalidwe odziletsa komanso odzilamulira panthawi yonseyi, popanda kufunikira zida zina zovuta zowongolera kutentha, zomwe zimapangitsa kuti ikhale njira yabwino komanso yotetezeka yotenthetsera magalimoto atsopano amphamvu.
Njira yonseyi yagawidwa m'magawo awiri: mfundo zazikulu za zinthu ndi njira yeniyeni yogwiritsira ntchito magalimoto. Chomalizachi chingasiyane pang'ono kutengera momwe ntchito ikuyendera (kutenthetsera m'nyumba/kutenthetsera batri). Chofunika kwambiri pakugwiritsa ntchito magalimoto ndizotenthetsera za PTC zoziziritsidwa ndi madzi(kusinthira kutentha koziziritsira), pomwe kutentha pang'ono kwa kabati kumagwiritsa ntchito ma heater a PTC otenthedwa ndi mpweya (kusinthira kutentha kwa mpweya mwachindunji). Zotsatirazi zikufotokozedwa motsatana:
1, Pachimake: Kutentha ndi kudziletsa kutentha mfundo ya PTC thermistor
Chigawo chachikulu cha kutentha kwaChotenthetsera cha PTCndi pepala la ceramic la PTC (ceramic ya semiconductor yokhala ndi barium titanate yokhala ndi zinthu zosawerengeka zapadziko lapansi), yomwe ndi muzu wa makhalidwe ake onse:
Kutentha: Zidutswa za PTC ceramic zimapanga njira zoyendetsera magetsi zokhala ndi tinthu tamkati toyendetsera magetsi pamagetsi ovoteledwa (magetsi okwera a DC ogwiritsidwa ntchito m'magalimoto, monga 300V+/400V+), zomwe zimapangitsa kutentha kwa Joule pamene mphamvu yamagetsi ikudutsa, zomwe zimapangitsa kuti mphamvu yamagetsi isinthe mwachindunji kukhala mphamvu ya kutentha ndi kutentha kwambiri (pafupifupi 100%, palibe kutayika kwa mphamvu yamagetsi);
Kutentha kodziletsa (khalidwe lalikulu): Pamene kutentha kwa ma chips a ceramic a PTC sikufika kutentha kwa Curie (kutentha kofunikira kwa zipangizo, kawirikawiri 120-180 ℃ kuti zigwiritsidwe ntchito m'magalimoto), mphamvu yotsutsa imakhala yochepa kwambiri, ndipo kutentha kwamphamvu kosalekeza komanso mphamvu zambiri kumachitika, zomwe zimapangitsa kuti kutentha kukwere mofulumira;
Kutentha kukapitirira kutentha kwa Curie, njira yoyendetsera mkati idzasweka mofulumira, ndipo kukana kudzawonjezeka kwambiri (mpaka 10 ³~ 10 ⁶ nthawi yotsutsa kutentha kwa chipinda). Malinga ndi lamulo la Ohm (P=U ²/R), pansi pa mphamvu yokhazikika, mphamvu yotenthetsera idzachepa kwambiri, ndipo liwiro lotenthetsera lidzakhala lotsika kuposa liwiro lotaya kutentha. Kutentha kudzakhazikika mwachilengedwe pafupi ndi kutentha kwa Curie ndipo sikudzapitirira kukwera, kupewa kuyaka kouma ndi kutentha kwambiri kuchokera muzu;
Kudzibwezeretsa: Kutentha kukatsika pansi pa kutentha kwa Curie chifukwa cha kutentha komwe kumatayika (monga choziziritsira/kuyenda kwa mpweya), kukana kudzabwerera msanga ku mkhalidwe wochepa wokana, kuyambiranso kutentha kwamphamvu kwambiri, ndikupeza mphamvu yodzilamulira yokha ya kutentha.
2、 Yankho Loyambira Kugwiritsa Ntchito Magalimoto: Njira Yogwirira Ntchito Chotenthetsera cha PTC Choziziritsidwa ndi Madzi (chogwiritsidwa ntchito potenthetsera kabati/batri)
Magalimoto amagetsi opitilira 90% amagwiritsa ntchito ma heater a PTC ozizira ndi madzi amphamvu (kapangidwe kakang'ono, kusinthana kutentha kofanana, koyenera kuyendetsa mpweya wofunda m'chipinda ndi kuyendetsa kutentha kwa batri), komwe kumaphatikizidwa mu kayendedwe ka kayendedwe ka mpweya wozizira m'magalimoto atsopano amphamvu. Kutentha kwa chipinda ndi batri kumachitika pokhapokha mutasinthana pakati pa ma circuits osiyanasiyana a makina otenthetsera a PTC omwewo. Njira yayikulu ndi yofanana, yogawidwa m'magawo anayi:
Kuyambitsa magetsi: Galimoto ya VCU (Vehicle Control Unit) imatumiza chizindikiro choyambitsa magetsi ku chotenthetsera cha PTC kutengera lamulo la mpweya woziziritsa/chizindikiro cha sensa ya kutentha kwa batri (ngati batri ikufunika kutenthedwa pansi pa 5 ℃), ndipo nthawi yomweyo imalumikiza dera lamagetsi la batri yamagetsi okwera. Mphamvu yamagetsi okwera ya DC imalowetsedwa ku chinthu chotenthetsera cha PTC;
Kusintha kwa magetsi kupita ku kutentha: Ma plate a ceramic a PTC amapanga kutentha mwachangu pansi pa mphamvu yamagetsi yapamwamba, kufika kutentha kogwira ntchito mkati mwa masekondi, ndipo kutentha kumasamutsidwira ku chipinda chotenthetsera kutentha/chubu chosinthira kutentha cha chotenthetsera cha PTC;
Kusinthana kwa Kutentha kwa Choziziritsira: Pampu yamadzi yamagetsi ya makina oyendetsera kutentha kwa galimoto imayendetsa choziziritsira kuti chizizungulira m'machubu osinthira kutentha a chotenthetsera cha PTC. Pambuyo poyamwa kutentha kuchokera ku chinthu chotenthetsera cha PTC, choziziritsira chimakhala choziziritsira kutentha kwambiri (nthawi zambiri 40-60 ℃, chosinthidwa malinga ndi kufunikira);
Kusamutsa kutentha
Kutentha kwa kabati: Choziziritsira cha kutentha kwambiri chimalowa m'kati mwa mpweya wofunda mkati mwa galimoto, ndipo choziziritsira mpweya cha galimoto chimakankhira mpweya wozizira kudzera m'kati mwa mpweya wofunda. Mpweya wozizira umayamwa kutentha kwa choziziritsiracho ndipo umakhala mpweya wotentha, womwe umatumizidwa m'galimoto kudzera mu mpweya wotulukira mpweya kuti utenthetse kabati;
Kutentha kwa batri: Choziziritsira kutentha kwambiri chimalowa mwachindunji mu mbale yoziziritsidwa ndi madzi/gawo losinthira kutentha la paketi ya batri yamagetsi, ndipo chimatenthetsa modula ya batri mofanana kudzera mu kutentha, kukweza kutentha kwa batri kufika pamlingo woyenera wochapira ndi kutulutsa (nthawi zambiri 10-35 ℃), kuthetsa mavuto a kuwonongeka kwa kutentha kochepa komanso kuchepa kwa chaji ndi kutulutsa.
Zowonjezera: Choziziritsira chikamaliza kusinthana kutentha, kutentha kumachepa kenako kumabwerera ku chotenthetsera cha PTC kudzera mu payipi kuti chiyamwitsenso kutentha, ndikupanga kuzungulira kotsekedwa ndikutenthetsa kosalekeza; Kabati/batire ikafika kutentha komwe mukufuna, VCU imadula mphamvu ya PTC yamagetsi apamwamba ndikuyimitsa kutentha.
3, Yankho laling'ono: Kayendedwe ka ntchito ya chotenthetsera cha PTC chotenthetsera ndi mphepo (chogwiritsidwa ntchito kokha potenthetsera pang'ono m'kabati)
Kutentha kwa magalimoto ena amagetsi ang'onoang'ono ndi mitundu yotsika mtengo kudzagwiritsa ntchito ma heater a PTC ozizira ndi mpweya (opanda kusinthana kutentha koziziritsira, kutentha mpweya mwachindunji), okhala ndi kapangidwe kosavuta komanso njira yayikulu ya:
Chotenthetsera cha PTC ceramic chowonjezera chamagetsi champhamvu chimapanga mwachindunji mphamvu yotentha;
Chopopera mpweya woziziritsa chimauzira mpweya wozizira pamwamba pa chinthu chotenthetsera cha PTC, ndipo mpweya wozizira umasinthasintha kutentha mwachindunji ndi mbale ya ceramic ya PTC yotentha kwambiri, n’kukhala mpweya wotentha;
Mpweya wotentha umatumizidwa mwachindunji m'chipindamo kudzera mu soketi ya mpweya kuti utenthetse mofulumira.
Zoyipa: Kusamutsa kutentha kosagwirizana, komwe kumakonda kutenthedwa ndi mpweya wotentha, ndi chinthu chotenthetsera cha PTC chimakhudza mpweya mwachindunji, zomwe zimafuna kuti fumbi ndi madzi zisaume kwambiri. Chifukwa chake, chimagwiritsidwa ntchito pamagalimoto ang'onoang'ono otsika mtengo okha, ndipo kuziziritsa kwamadzimadzi kumagwiritsidwa ntchito pamagalimoto atsopano amphamvu apakatikati mpaka apamwamba.
Nthawi yotumizira: Januwale-30-2026
