{"id":70035,"date":"2024-03-25T08:33:28","date_gmt":"2024-03-25T08:33:28","guid":{"rendered":"https:\/\/knowhow.distrelec.com\/bez-kategorii\/zarzadzanie-temperatura-diod-led\/"},"modified":"2024-03-25T12:36:40","modified_gmt":"2024-03-25T12:36:40","slug":"zarzadzanie-temperatura-diod-led","status":"publish","type":"post","link":"https:\/\/knowhow.distrelec.com\/pl\/energia-i-moc\/zarzadzanie-temperatura-diod-led\/","title":{"rendered":"Zarz\u0105dzanie temperatur\u0105 diod LED"},"content":{"rendered":"\n<p>Diody LED przetwarzaj\u0105 energi\u0119 elektryczn\u0105 w \u015bwiat\u0142o, ale wynikiem tego procesu jest wydzielanie ciep\u0142a. Niew\u0142a\u015bciwe zarz\u0105dzanie temperatur\u0105 jest g\u0142\u00f3wn\u0105 przyczyn\u0105 awarii diod LED. Dlatego w ka\u017cdej aplikacji LED nale\u017cy zadba\u0107 o odpowiednie zarz\u0105dzanie generowanym ciep\u0142em.\u00a0<\/p>\n\n<p>W przeciwie\u0144stwie do \u017car\u00f3wek, diody LED nie emituj\u0105 ciep\u0142a bezpo\u015brednio ze \u017ar\u00f3d\u0142a. Przewodz\u0105 one ciep\u0142o od z\u0142\u0105cza PN do z\u0142\u0105cza termicznego na obudowie LED. Z\u0142\u0105cze termiczne jest umieszczone poni\u017cej matrycy LED i jest przylutowane do p\u0142ytki PCB, odprowadzaj\u0105c do niej ciep\u0142o.\u00a0<\/p>\n\n<h2 id=\"jak-dochodzi-do-przegrzania-diody-led\" class=\"wp-block-heading\"><strong>Jak dochodzi do przegrzania diody LED<\/strong>?<\/h2>\n\n<p>Standardowa maksymalna temperatura z\u0142\u0105cza diody LED wynosi oko\u0142o 150\u00b0C, a jej przekroczenie skutkuje zwykle uszkodzeniem diody. Jednak zanim temperatura osi\u0105gnie ten krytyczny punkt, mo\u017cna zauwa\u017cy\u0107 szereg zjawisk wp\u0142ywaj\u0105cych na parametry i wydajno\u015b\u0107 diod LED. Na przyk\u0142ad, kolor i jasno\u015b\u0107 diod LED s\u0105 wra\u017cliwe na wahania temperatury.\u00a0\u00a0<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Dominuj\u0105ca d\u0142ugo\u015b\u0107 fali<\/strong>. Jeden z efekt\u00f3w przejawia si\u0119 w dominuj\u0105cej d\u0142ugo\u015bci fali emitowanego \u015bwiat\u0142a, na kt\u00f3r\u0105 wp\u0142ywa temperatura z\u0142\u0105cza. Wzrost temperatury mo\u017ce prowadzi\u0107 do przesuni\u0119cia d\u0142ugo\u015bci fal, co skutkuje subteln\u0105 zmian\u0105 koloru.<strong>\u00a0<\/strong>\u00a0<\/li>\n\n\n\n<li><strong>Moc \u015bwiat\u0142a<\/strong>. Strumie\u0144 \u015bwiat\u0142a zale\u017cy od temperatury z\u0142\u0105cza. Wraz ze wzrostem temperatury zmniejsza si\u0119 nat\u0119\u017cenie strumienia \u015bwiat\u0142a. R\u00f3\u017cne d\u0142ugo\u015bci fal maj\u0105 r\u00f3\u017cne poziomy wra\u017cliwo\u015bci na ten efekt, przy czym \u015bwiat\u0142o o barwie pomara\u0144czowej jest najbardziej wra\u017cliwe.\u00a0<\/li>\n\n\n\n<li><strong>\u017bywotno\u015b\u0107 diod LED<\/strong>. Niezawodno\u015b\u0107 diod LED zale\u017cy bezpo\u015brednio od temperatury z\u0142\u0105cza. Wy\u017csza temperatura z\u0142\u0105cza zwykle skutkuje skr\u00f3ceniem \u017cywotno\u015bci diod LED i obni\u017ceniem ich wydajno\u015bci.\u00a0\u00a0<\/li>\n\n\n\n<li><strong>Napi\u0119cie przewodzenia<\/strong>. Sytuacja ta wyst\u0119puje, gdy dioda LED jest zasilana sta\u0142ym napi\u0119ciem. Wraz ze wzrostem temperatury napi\u0119cie przewodzenia spada, co powoduje wzrost nat\u0119\u017cenia pr\u0105du, co mo\u017ce powodowa\u0107 wahania jasno\u015bci diod LED.\u00a0\u00a0<\/li>\n<\/ul>\n\n<h2 id=\"metody-zarzadzania-termicznego\" class=\"wp-block-heading\"><strong>Metody zarz\u0105dzania termicznego<\/strong><\/h2>\n\n<figure class=\"wp-block-image size-full\"><img  loading=\"lazy\"  decoding=\"async\"  width=\"515\"  height=\"353\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAgMAAAFhAQMAAADXwTvYAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAC1JREFUeNrtwTEBAAAAwqD1T20JT6AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA4GlbAgAB0n6EDgAAAABJRU5ErkJggg==\"  alt=\"Radiator\"  class=\"wp-image-69459 pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"auto, (max-width: 515px) 100vw, 515px\"  data-pk-src=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2024\/03\/image-2.png\"  data-pk-srcset=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2024\/03\/image-2.png 515w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2024\/03\/image-2.png?resize=300,206 300w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2024\/03\/image-2.png?resize=380,260 380w\" ><\/figure>\n\n<p>Odpowiednie zarz\u0105dzanie termiczne diodami LED, polegaj\u0105ce na rozpraszaniu ciep\u0142a, zapewnia ich wydajn\u0105 prac\u0119. Do tego celu najcz\u0119\u015bciej wykorzystuje si\u0119 ch\u0142odzenie pasywne przy u\u017cyciu radiator\u00f3w i materia\u0142\u00f3w termoprzewodz\u0105cych (TIM), kt\u00f3re odprowadzaj\u0105 nadmiar ciep\u0142a i ch\u0142odz\u0105 diody LED. Nadmiar ciep\u0142a jest odprowadzany ze z\u0142\u0105cza LED do radiatora, a nast\u0119pnie uwalniany do otoczenia.\u00a0<\/p>\n\n<h3 id=\"radiator\" class=\"wp-block-heading\"><strong>Radiator<\/strong><\/h3>\n\n<p>Radiator to blok metalu, kt\u00f3ry odpowiada za pasywne odprowadzanie ciep\u0142a z urz\u0105dzenia elektronicznego i uwalnianie go do otoczenia. Najpopularniejszymi metalami stosowanymi do produkcji radiator\u00f3w s\u0105 \u017celazo, aluminium i mied\u017a. Mied\u017a wykazuje najwy\u017csz\u0105 przewodno\u015b\u0107 ciepln\u0105, ale jest znacznie dro\u017cszym rozwi\u0105zaniem. Najni\u017csz\u0105 przewodno\u015b\u0107 ciepln\u0105 charakteryzuje si\u0119 \u017celazo. Natomiast aluminium odznacza si\u0119 dobrym poziomem przewodno\u015bci cieplnej i jest najbardziej ekonomiczn\u0105 opcj\u0105. Kszta\u0142t i konstrukcja radiatora s\u0105 r\u00f3wnie\u017c kluczowymi czynnikami wp\u0142ywaj\u0105cymi na efekt ch\u0142odzenia. Radiator z wyt\u0142aczanymi \u017ceberkami ma wi\u0119ksz\u0105 powierzchni\u0119 ni\u017c ten bez nich, przez co oddaje ciep\u0142o bardziej efektywnie.\u00a0\u00a0<\/p>\n\n<h4 id=\"jak-materialy-termoprzewodzace-wplywaja-na-dzialanie-radiatorow\" class=\"wp-block-heading\"><strong>Jak materia\u0142y termoprzewodz\u0105ce wp\u0142ywaj\u0105 na dzia\u0142anie radiator\u00f3w <\/strong><\/h4>\n\n<p>Materia\u0142y termoprzewodz\u0105ce (TIM)<strong> <\/strong>wype\u0142niaj\u0105 przestrzenie pomi\u0119dzy powierzchni\u0105 radiatora a powierzchni\u0105 p\u0142ytki drukowanej LED. Powstaje w ten spos\u00f3b ci\u0105g\u0142a warstwa, kt\u00f3ra skuteczniej odprowadza ciep\u0142o z diody LED do radiatora. Ich zastosowanie pozwala wi\u0119c jeszcze bardziej zwi\u0119kszy\u0107 korzy\u015bci p\u0142yn\u0105ce z zastosowania radiatora i wyd\u0142u\u017cy\u0107 czas wydajnej pracy diod LED. \u00a0\u00a0<\/p>\n\n<p>Aby zademonstrowa\u0107 ten efekt w praktyce, zamontowali\u015bmy 1 diod\u0119 LED Powerstar na radiatorze i zasilali\u015bmy j\u0105 przez 30 minut. Nast\u0119pnie za pomoc\u0105 <a href=\"https:\/\/knowhow.distrelec.com\/pl\/zrownowazony-rozwoj\/3-sposoby-w-jakie-mozna-wykorzystac-kamery-termowizyjne-aby-oszczedzac-energie\/\" target=\"_blank\" rel=\"noreferrer noopener\">kamery termowizyjnej<\/a> zmierzyli\u015bmy temperatur\u0119 radiatora, aby okre\u015bli\u0107, ile ciep\u0142a zosta\u0142o do niego doprowadzone. Nast\u0119pnie powt\u00f3rzyli\u015bmy to do\u015bwiadczenie z t\u0105 sam\u0105 konfiguracj\u0105, ale u\u017cywaj\u0105c kawa\u0142ka materia\u0142u TIM pomi\u0119dzy radiatorem a diod\u0105 Powerstar.\u00a0\u00a0<\/p>\n\n<p>Na zdj\u0119ciu poni\u017cej wyra\u017anie wida\u0107, \u017ce wi\u0119cej ciep\u0142a zosta\u0142o odprowadzone do radiatora, gdy zastosowano TIM. R\u00f3\u017cnica wynosi prawie 8\u00b0C.\u00a0<\/p>\n\n<p><strong><em>Po lewej: LED Powerstar, radiator i brak TIM.<\/em><\/strong>\u00a0<\/p>\n\n<p><strong><em>Po prawej: LED Powerstar, radiator i TIM.<\/em><\/strong>\u00a0<\/p>\n\n<figure class=\"wp-block-image size-full\"><img  loading=\"lazy\"  decoding=\"async\"  width=\"531\"  height=\"207\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAhMAAADPAQMAAAB1DsEaAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAACVJREFUaN7twTEBAAAAwqD1T20ND6AAAAAAAAAAAAAAAAAA4MsANvwAAT0SLD0AAAAASUVORK5CYII=\"  alt=\"Po lewej: LED Powerstar, radiator i brak TIM.Po prawej: LED Powerstar, radiator i TIM.\"  class=\"wp-image-69471 pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"auto, (max-width: 531px) 100vw, 531px\"  data-pk-src=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2024\/03\/image-3.png\"  data-pk-srcset=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2024\/03\/image-3.png 531w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2024\/03\/image-3.png?resize=300,117 300w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2024\/03\/image-3.png?resize=380,148 380w\" ><\/figure>\n\n<p><strong>Polecane produkty<\/strong>:<\/p>\n\n<p><a href=\"https:\/\/www.distrelec.biz\/en\/thermal-interface-material-for-star-leds-round-intelligent-led-solutions-ila-tim-star-1a\/p\/30184329?trackQuery=ila-tim&amp;pos=1&amp;origPos=1&amp;origPageSize=50&amp;track=true&amp;sid=7c84af63a9956091d3756bdb731a6ebdb5afc025&amp;itemList=search\" target=\"_blank\" rel=\"noreferrer noopener\">ILA-TIM<\/a><\/p>\n\n<p><a href=\"https:\/\/www.distrelec.biz\/en\/led-heat-sink-50x50x20mm-intelligent-led-solutions-ila-hsink-star-50x20mm-blk\/p\/30184317?queryFromSuggest=true&amp;itemList=suggested_search\" target=\"_blank\" rel=\"noreferrer noopener\">ILA-HSINK<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Diody LED przetwarzaj\u0105 energi\u0119 elektryczn\u0105 w \u015bwiat\u0142o, ale wynikiem tego procesu jest wydzielanie ciep\u0142a. Niew\u0142a\u015bciwe zarz\u0105dzanie temperatur\u0105 jest&hellip;\n","protected":false},"author":27,"featured_media":69507,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"csco_singular_sidebar":"","csco_page_header_type":"","csco_appearance_grid":"","csco_page_load_nextpost":"","csco_post_video_location":[],"csco_post_video_location_hash":"","csco_post_video_url":"","csco_post_video_bg_start_time":0,"csco_post_video_bg_end_time":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[227],"tags":[],"coauthors":[1736],"class_list":{"0":"post-70035","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-energia-i-moc","8":"cs-entry","9":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Zarz\u0105dzanie temperatur\u0105 diod LED - KnowHow<\/title>\n<meta name=\"description\" content=\"Diody LED przetwarzaj\u0105 energi\u0119 elektryczn\u0105 w \u015bwiat\u0142o, ale wynikiem tego procesu jest wydzielanie ciep\u0142a. 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