Ukuqhekeka kwee-capacitors ze-ceramic zamandla aphezulu zinokuhlelwa ngokubanzi zibe ziindidi ezintathu. Ngexesha lokusetyenziswa kwezi capacitors, iifractures zingenzeka, ezihlala zixake iingcali ezininzi. La ma-capacitors avavanyelwe i-voltage, i-dissipation factor, ukukhutshwa kwenxalenye, kunye nokuxhatshazwa kwe-insulation ngexesha lokuthenga, kwaye zonke ziphumelele iimvavanyo. Nangona kunjalo, emva kweenyanga ezintandathu okanye unyaka wokusetyenziswa, ezinye ii-capacitors ze-ceramic zombane ophezulu zafunyanwa ziqhekekile. Ngaba ezi ziqhekeza zibangelwa yi-capacitors ngokwazo okanye izinto zangaphandle zokusingqongileyo?
Ngokubanzi, ukuqhekeka kombane ophezulu we-ceramic capacitors kunokubalelwa koku kulandelayo izinto ezintathu ezinokwenzeka:
Eyokuqala inokwenzeka ukubola thermal. Xa i-capacitors ixhomekeke ngokukhawuleza okanye ixesha elide eliphezulu kunye neemeko zokusebenza zangoku, i-ceramic capacitors inokuvelisa ukushisa. Nangona izinga lokuvelisa ubushushu licotha, ubushushu bunyuka ngokukhawuleza, nto leyo ekhokelela ekubolisweni kwe-thermal kumaqondo aphezulu.
Eyesibini inokwenzeka ukuthotywa kweekhemikhali. Kukho izikhewu phakathi kweeamolekyu zangaphakathi ze-ceramic capacitors, kwaye iziphene ezifana nokuqhekeka kunye ne-voids zinokuthi zenzeke ngexesha lenkqubo yokuvelisa i-capacitor (ingozi enokwenzeka ekuvelisweni kweemveliso eziphantsi). Ekuhambeni kwexesha, ezinye iikhemikhali ziyakwazi ukuvelisa iigesi ezinjengeozone necarbon dioxide. Xa ezi gesi ziqokelelana, zinokuchaphazela umaleko we-encapsulation wangaphandle kwaye zidale izikhewu, okukhokelela ekuqhekekeni.
Eyesithathu inokwenzeka Ukuqhekeka kwe-ion. Amandla ombane aphezulu e-ceramic capacitors axhomekeke kwii-ion ezihamba ngokusebenzayo phantsi kweempembelelo zentsimi yombane. Xa i-ion ixhomekeke kwintsimi yombane ixesha elide, ukuhamba kwazo kuyanda. Kwimeko yangoku ngokugqithisileyo, i-insulation layer inokonakala, ekhokelela ekuqhekekeni.
Ngokuqhelekileyo, oku kusilela kwenzeka emva kweenyanga ezintandathu okanye unyaka. Nangona kunjalo, iimveliso ezivela kubavelisi abanomgangatho ophantsi zinokusilela emva kweenyanga ezintathu kuphela. Ngamanye amazwi, ixesha lokuphila kwezi capacitors ze-ceramic zamandla aphezulu ziinyanga ezintathu kuphela ukuya kunyaka omnye! Ngoko ke, olu hlobo lwe-capacitor alufanelekanga ngokubanzi izixhobo ezibalulekileyo ezifana neegridi ezihlakaniphile kunye neejeneretha eziphezulu. Abathengi begridi ehlakaniphile bahlala befuna ii-capacitors ukuba zihlale iminyaka engama-20.
Ukwandisa ixesha lokuphila kwee-capacitors, ezi ngcebiso zilandelayo zinokuqwalaselwa:
1)Faka indawo ye-dielectric material ye-capacitors. Umzekelo, iisekethe ekuqaleni zisebenzisa i-X5R, Y5T, Y5P, kunye nezinye iikeramics zeKlasi yesi-II zinokutshintshwa ngeekeramics zeKlasi I njenge-N4700. Nangona kunjalo, i-N4700 inomlinganiselo omncinci we-dielectric, ngoko ke ii-capacitors ezenziwe nge-N4700 ziya kuba nemilinganiselo emikhulu ye-voltage efanayo kunye ne-capacitance. Iiseramikhi zodidi lwe-I ngokubanzi zinexabiso lokumelana nokugquma ngaphezulu ngokuphindwe kashumi ngaphezulu kweeseramikhi zodidi II, zibonelela ngesakhono sokugquma esomeleleyo.
2)Khetha abavelisi be-capacitor abaneenkqubo ezingcono ze-welding zangaphakathi. Oku kubandakanya ukucaba kunye nokungabi nasiphako kweepleyiti ze-ceramic, ubukhulu besilivere yokucwenga, ukugcwala kweencasa zeeplate ze-ceramic, umgangatho we-soldering ye-lead okanye iitheminali zetsimbi, kunye nenqanaba le-epoxy coating encapsulation. Ezi nkcukacha zihambelana nesakhiwo sangaphakathi kunye nomgangatho wokubonakala kwee-capacitors. IiCapacitors ezinomgangatho ongcono wenkangeleko zihlala zinemveliso yangaphakathi engcono.
Sebenzisa ii-capacitors ezimbini ngokuhambelana endaweni ye-capacitor enye. Oku kuvumela i-voltage ekuqaleni eyayithwalwa yi-capacitor enye ukuba isasazwe phakathi kwee-capacitors ezimbini, ukuphucula ukuqina kukonke kwee-capacitors. Nangona kunjalo, le ndlela yonyusa iindleko kwaye ifuna indawo eninzi yokufaka ii-capacitors ezimbini.
3) Kwii-capacitors zombane eziphezulu kakhulu, ezifana ne-50kV, 60kV, okanye i-100kV, ipleyiti yedoti yemveli enye isakhiwo esidityanisiweyo singatshintshwa ngoluhlu oluphindwe kabini lweplate ye-ceramic okanye isakhiwo esihambelanayo. Oku kusebenzisa i-capacitors ye-ceramic ephindwe kabini ukwandisa amandla ombane okumelana. Oku kubonelela ngomda wamandla ombane aphezulu ngokwaneleyo, kwaye okukhona umkhulu umda wombane, kokukhona kuqikelelwa ixesha elide lokuphila kwee-capacitors. Okwangoku, yinkampani ye-HVC kuphela enokufikelela kulwakhiwo lwangaphakathi lwee-capacitors ze-ceramic zombane ophezulu usebenzisa iipleyiti ze-ceramic ezinomaleko amabini. Nangona kunjalo, le ndlela iyabiza kwaye inobunzima benkqubo yemveliso ephezulu. Ngeenkcukacha ezithile, nceda uqhagamshelane neentengiso kunye neqela lobunjineli benkampani yeHVC.
