{"id":676593,"date":"2024-08-01T04:41:41","date_gmt":"2024-08-01T03:41:41","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=676593"},"modified":"2024-08-01T04:41:41","modified_gmt":"2024-08-01T03:41:41","slug":"cach-quan-ly-nhiet-trong-den-led-hoat-dong-nhu-the-nao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/cach-quan-ly-nhiet-trong-den-led-hoat-dong-nhu-the-nao\/","title":{"rendered":"C\u00e1ch qu\u1ea3n l\u00fd nhi\u1ec7t trong \u0111\u00e8n LED ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o"},"content":{"rendered":"<p class=\"sidekick\">C\u00e1ch qu\u1ea3n l\u00fd nhi\u1ec7t trong \u0111\u00e8n LED ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o: Gi\u1ea3i th\u00edch c\u01a1 ch\u1ebf gi\u1ea3m nhi\u1ec7t, v\u1eadt li\u1ec7u t\u1ea3n nhi\u1ec7t v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf trong vi\u1ec7c k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a \u0111\u00e8n LED.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/cach_quan_ly_nhiet_trong_den_led_hoat_dong_nhu_the_nao.png\" alt=\"C\u00e1ch qu\u1ea3n l\u00fd nhi\u1ec7t trong \u0111\u00e8n LED ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>C\u00e1ch qu\u1ea3n l\u00fd nhi\u1ec7t trong \u0111\u00e8n LED ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n<p>Qu\u1ea3n l\u00fd nhi\u1ec7t l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t khi thi\u1ebft k\u1ebf v\u00e0 v\u1eadn h\u00e0nh \u0111\u00e8n LED. \u0110\u00e8n LED (Light Emitting Diode) kh\u00f4ng ch\u1ec9 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng cao m\u00e0 c\u00f2n v\u1edbi tu\u1ed5i th\u1ecd d\u00e0i. Tuy nhi\u00ean, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o nh\u1eefng l\u1ee3i \u00edch n\u00e0y, c\u1ea7n ph\u1ea3i c\u00f3 c\u00e1c bi\u1ec7n ph\u00e1p qu\u1ea3n l\u00fd nhi\u1ec7t hi\u1ec7u qu\u1ea3. D\u01b0\u1edbi \u0111\u00e2y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u v\u1ec1 c\u00e1ch qu\u1ea3n l\u00fd nhi\u1ec7t trong \u0111\u00e8n LED ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o.<\/p>\n<h3>1. T\u1ea1i sao qu\u1ea3n l\u00fd nhi\u1ec7t quan tr\u1ecdng?<\/h3>\n<ul>\n<li><strong>T\u0103ng tu\u1ed5i th\u1ecd:<\/strong> Nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m tu\u1ed5i th\u1ecd c\u1ee7a \u0111\u00e8n LED, l\u00e0m cho c\u00e1c linh ki\u1ec7n b\u00ean trong b\u1ecb h\u1ecfng.<\/li>\n<li><strong>Duy tr\u00ec hi\u1ec7u su\u1ea5t:<\/strong> \u0110\u00e8n LED ho\u1ea1t \u0111\u1ed9ng k\u00e9m hi\u1ec7u qu\u1ea3 h\u01a1n khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 hi\u1ec7u su\u1ea5t \u00e1nh s\u00e1ng v\u00e0 hi\u1ec7u n\u0103ng ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng.<\/li>\n<li><strong>An to\u00e0n:<\/strong> Qu\u1ea3n l\u00fd nhi\u1ec7t k\u00e9m c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c nguy c\u01a1 an to\u00e0n, ch\u1eb3ng h\u1ea1n nh\u01b0 ch\u00e1y n\u1ed5.<\/li>\n<\/ul>\n<h3>2. C\u00e1c c\u00e1ch qu\u1ea3n l\u00fd nhi\u1ec7t trong \u0111\u00e8n LED<\/h3>\n<h4>T\u1ea3n nhi\u1ec7t<\/h4>\n<p>T\u1ea3n nhi\u1ec7t l\u00e0 ph\u01b0\u01a1ng ph\u00e1p c\u01a1 b\u1ea3n nh\u1ea5t \u0111\u1ec3 qu\u1ea3n l\u00fd nhi\u1ec7t trong \u0111\u00e8n LED. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c khung v\u00e0 v\u1ecf t\u1ea3n nhi\u1ec7t l\u00e0m t\u1eeb v\u1eadt li\u1ec7u c\u00f3 h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t cao nh\u01b0 nh\u00f4m.<\/p>\n<ul>\n<li><strong>Nh\u00f4m:<\/strong> Nh\u00f4m l\u00e0 v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn nh\u1edd v\u00e0o kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t t\u1ed1t v\u00e0 gi\u00e1 th\u00e0nh ph\u1ea3i ch\u0103ng.<\/li>\n<li><strong>C\u00e1nh t\u1ea3n nhi\u1ec7t:<\/strong> C\u00e1c c\u00e1nh t\u1ea3n nhi\u1ec7t gi\u00fap t\u0103ng di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t, l\u00e0m cho qu\u00e1 tr\u00ecnh t\u1ea3n nhi\u1ec7t di\u1ec5n ra hi\u1ec7u qu\u1ea3 h\u01a1n.<\/li>\n<\/ul>\n<h4>Qu\u1ea1t l\u00e0m m\u00e1t<\/h4>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00e8n LED c\u00f4ng su\u1ea5t cao, qu\u1ea1t l\u00e0m m\u00e1t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u00fap t\u0103ng c\u01b0\u1eddng l\u01b0u l\u01b0\u1ee3ng kh\u00f4ng kh\u00ed v\u00e0 c\u1ea3i thi\u1ec7n qu\u00e1 tr\u00ecnh l\u00e0m m\u00e1t.<\/p>\n<h4>V\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t<\/h4>\n<p>V\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t nh\u01b0 keo t\u1ea3n nhi\u1ec7t ho\u1eb7c mi\u1ebfng \u0111\u1ec7m d\u1eabn nhi\u1ec7t (thermal pad) th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u1ea3i thi\u1ec7n ti\u1ebfp x\u00fac gi\u1eefa LED v\u00e0 b\u1ec1 m\u1eb7t t\u1ea3n nhi\u1ec7t.<\/p>\n<h3>3. Gi\u1ea3i ph\u00e1p n\u00e2ng cao<\/h3>\n<h4>H\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t b\u1eb1ng ch\u1ea5t l\u1ecfng<\/h4>\n<p>Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p c\u1ee5 th\u1ec3, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi c\u1ea7n ph\u1ea3i qu\u1ea3n l\u00fd nhi\u1ec7t \u0111\u1ed9 c\u1ee7a \u0111\u00e8n LED c\u00f4ng su\u1ea5t r\u1ea5t cao, h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t b\u1eb1ng ch\u1ea5t l\u1ecfng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng. H\u1ec7 th\u1ed1ng n\u00e0y s\u1eed d\u1ee5ng m\u00f4i tr\u01b0\u1eddng ch\u1ea5t l\u1ecfng \u0111\u1ec3 t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3 h\u01a1n so v\u1edbi kh\u00f4ng kh\u00ed.<\/p>\n<h4>B\u1ed1 tr\u00ed v\u00e0 thi\u1ebft k\u1ebf m\u1ea1ch in (PCB)<\/h4>\n<p>C\u00e1ch b\u1ed1 tr\u00ed v\u00e0 thi\u1ebft k\u1ebf m\u1ea1ch in kh\u00f4ng k\u00e9m ph\u1ea7n quan tr\u1ecdng trong vi\u1ec7c qu\u1ea3n l\u00fd nhi\u1ec7t. S\u1eed d\u1ee5ng PCB v\u1edbi l\u1edbp c\u00e1ch nhi\u1ec7t t\u1ed1t v\u00e0 b\u1ed1 tr\u00ed c\u00e1c linh ki\u1ec7n t\u1ea1o ra \u00edt nhi\u1ec7t g\u1ea7n nhau c\u00f3 th\u1ec3 gi\u00fap ph\u00e2n t\u00e1n nhi\u1ec7t \u0111\u1ec1u v\u00e0 gi\u1ea3m nguy c\u01a1 qu\u00e1 nhi\u1ec7t.<\/p>\n<ul>\n<li><strong>PCB nh\u00f4m:<\/strong> M\u1ed9t lo\u1ea1i PCB ph\u1ed5 bi\u1ebfn trong c\u00e1c \u1ee9ng d\u1ee5ng LED do kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t t\u1ed1t.<\/li>\n<\/ul>\n<h3>4. K\u1ebft lu\u1eadn<\/h3>\n<p>Qu\u1ea3n l\u00fd nhi\u1ec7t l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a \u0111\u00e8n LED. T\u1eeb c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u01a1n gi\u1ea3n nh\u01b0 s\u1eed d\u1ee5ng v\u1ecf t\u1ea3n nhi\u1ec7t nh\u00f4m \u0111\u1ebfn c\u00e1c gi\u1ea3i ph\u00e1p ph\u1ee9c t\u1ea1p nh\u01b0 h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t b\u1eb1ng ch\u1ea5t l\u1ecfng, m\u1ed7i ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec1u c\u1ea7n \u0111\u01b0\u1ee3c c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t. Vi\u1ec7c hi\u1ec3u v\u00e0 \u00e1p d\u1ee5ng hi\u1ec7u qu\u1ea3 c\u00e1c k\u1ef9 thu\u1eadt qu\u1ea3n l\u00fd nhi\u1ec7t kh\u00f4ng ch\u1ec9 gi\u00fap k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a \u0111\u00e8n LED m\u00e0 c\u00f2n n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 an to\u00e0n cho thi\u1ebft b\u1ecb.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1ch qu\u1ea3n l\u00fd nhi\u1ec7t trong \u0111\u00e8n LED ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o: Gi\u1ea3i th\u00edch c\u01a1 ch\u1ebf gi\u1ea3m nhi\u1ec7t, v\u1eadt li\u1ec7u t\u1ea3n nhi\u1ec7t v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf trong vi\u1ec7c k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a \u0111\u00e8n LED.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - 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