{"id":3323,"date":"2026-05-22T18:13:16","date_gmt":"2026-05-22T16:13:16","guid":{"rendered":"https:\/\/it2506.sspu-opava.eu\/?p=3323"},"modified":"2026-05-26T07:29:36","modified_gmt":"2026-05-26T05:29:36","slug":"napajeci-kaskada-a-baterie-jak-funguje-li-ion-li-pol-clanek-a-jak-zakladni-deska-ridi-distribuci-energie","status":"publish","type":"post","link":"https:\/\/it2506.sspu-opava.eu\/?p=3323","title":{"rendered":"Nap\u00e1jec\u00ed kask\u00e1da a baterie: Jak funguje Li-Ion\/Li-Pol \u010dl\u00e1nek a jak z\u00e1kladn\u00ed deska \u0159\u00edd\u00ed distribuci energie?"},"content":{"rendered":"<h2 class=\"wp-block-heading\">\u00davod: Srdce energetick\u00e9ho syst\u00e9mu notebooku<\/h2>\n<p class=\"wp-block-paragraph\">Nap\u00e1jec\u00ed soustava notebooku je daleko slo\u017eit\u011bj\u0161\u00ed ne\u017e u stoln\u00edho PC. Zat\u00edmco desktop bere energii ze z\u00e1suvky p\u0159es jednoduch\u00fd PSU (Power Supply Unit), notebook mus\u00ed um\u011bt pracovat ze t\u0159\u00ed r\u016fzn\u00fdch zdroj\u016f (AC adapt\u00e9r, baterie, USB-C Power Delivery) a plynule mezi nimi p\u0159ep\u00ednat bez v\u00fdpadku. Tento \u010dl\u00e1nek rozeb\u00edr\u00e1 technick\u00e9 detaily nap\u00e1jec\u00ed kask\u00e1dy, chemie bateri\u00ed a distribuce energie na z\u00e1kladn\u00ed desce.<\/p>\n<h2 class=\"wp-block-heading\">Li-Ion a Li-Pol \u010dl\u00e1nky: Chemie a konstrukce<\/h2>\n<p class=\"wp-block-paragraph\">V\u011bt\u0161ina notebook\u016f dnes pou\u017e\u00edv\u00e1 lithium-iontov\u00e9 (Li-Ion) nebo lithium-polymerov\u00e9 (Li-Pol, LiPo) \u010dl\u00e1nky. Li-Pol je varianta Li-Ion, kter\u00e1 m\u00edsto kapaln\u00e9ho elektrolytu pou\u017e\u00edv\u00e1 gelov\u00fd nebo pevn\u00fd polymern\u00ed elektrolyt. To umo\u017e\u0148uje v\u00fdrobu \u010dl\u00e1nk\u016f v tenk\u00fdch a flexibiln\u00edch obalech (pouch cells).<\/p>\n<p class=\"wp-block-paragraph\"><strong>Kl\u00ed\u010dov\u00e9 parametry \u010dl\u00e1nku:<\/strong><\/p>\n<ul class=\"wp-block-list\"><li><strong>Jmenovit\u00e9 nap\u011bt\u00ed:<\/strong> 3,6\u20133,7 V (pln\u011b nabit\u00fd 4,2 V, vybit\u00fd cca 3,0 V).<\/li><li><strong>Kapacita:<\/strong> Ud\u00e1v\u00e1 se v mAh nebo Wh. Typick\u00fd 4\u010dl\u00e1nkov\u00fd (4s) notebookov\u00fd akumul\u00e1tor: 50\u2013100 Wh.<\/li><li><strong>C-rate:<\/strong> Maxim\u00e1ln\u00ed vyb\u00edjec\u00ed\/nab\u00edjec\u00ed proud v n\u00e1sobc\u00edch kapacity. 1C u 60Wh baterie = 60 W. Hern\u00ed notebooky mohou vy\u017eadovat 5\u20138C \u0161pi\u010dkov\u011b.<\/li><li><strong>Po\u010det cykl\u016f:<\/strong> Obvykle 300\u2013800 cykl\u016f do poklesu kapacity pod 80 %.<\/li><\/ul>\n<h2 class=\"wp-block-heading\">Balancing a ochrana: BMS a fuel gauge<\/h2>\n<p class=\"wp-block-paragraph\">Ka\u017ed\u00fd notebookov\u00fd akumul\u00e1tor obsahuje desku BMS (Battery Management System) s obvodem fuel gauge (m\u011b\u0159i\u010d stavu energie). BMS zaji\u0161\u0165uje:<\/p>\n<ul class=\"wp-block-list\"><li><strong>Cell balancing:<\/strong> Vyrovn\u00e1v\u00e1n\u00ed nap\u011bt\u00ed jednotliv\u00fdch s\u00e9riov\u011b \u0159azen\u00fdch \u010dl\u00e1nk\u016f (typicky 3s, 4s nebo 6s). Pasivn\u00ed balancing odpou\u0161t\u00ed p\u0159ebyte\u010dnou energii z nejv\u00edce nabit\u00e9ho \u010dl\u00e1nku p\u0159es rezistor. Aktivn\u00ed balancing (dra\u017e\u0161\u00ed) p\u0159en\u00e1\u0161\u00ed energii mezi \u010dl\u00e1nky.<\/li><li><strong>Ochrana proti p\u0159ebit\u00ed (OVP):<\/strong> P\u0159i nap\u011bt\u00ed nad 4,25 V na \u010dl\u00e1nek odpoj\u00ed baterii.<\/li><li><strong>Ochrana proti p\u0159ep\u011bt\u00ed\/zkratu (SCP):<\/strong> Proudov\u00fd limit a detekce zkratu.<\/li><li><strong>Teplotn\u00ed monitoring:<\/strong> NTC termistory na \u010dl\u00e1nc\u00edch, p\u0159i p\u0159ekro\u010den\u00ed 60\u201370 \u00b0C se nab\u00edjen\u00ed p\u0159eru\u0161\u00ed.<\/li><\/ul>\n<p class=\"wp-block-paragraph\">Fuel gauge (\u010dasto \u010dip TI BQ40Z80 nebo Maxim MAX17260) m\u011b\u0159\u00ed nap\u011bt\u00ed, proud a teplotu a pomoc\u00ed Coulombova po\u010d\u00edt\u00e1n\u00ed (Coulomb counting) + korekce napr\u00e1zdno (OCV) odhaduje zb\u00fdvaj\u00edc\u00ed kapacitu s p\u0159esnost\u00ed \u00b11\u20133 %. Komunikuje s EC p\u0159es SMBus (System Management Bus).<\/p>\n<h2 class=\"wp-block-heading\">Nap\u00e1jec\u00ed kask\u00e1da: Od adapt\u00e9ru k CPU<\/h2>\n<p class=\"wp-block-paragraph\">Nap\u00e1jec\u00ed cesta od zdroje k procesoru proch\u00e1z\u00ed n\u011bkolika stupni:<\/p>\n<ol class=\"wp-block-list\"><li><strong>AC adapt\u00e9r \/ USB-C PD:<\/strong> Vstup 19\u201320 V DC (USB-C PD 5\u201320 V dle dohody).<\/li><li><strong>Vstupn\u00ed filtrace a ochrana:<\/strong> TVS diody, PTC pojistky, feritov\u00e9 filtry proti EMI.<\/li><li><strong>Charger IC:<\/strong> Obvod jako TI BQ25790 nebo Renesas ISL9241, kter\u00fd \u0159\u00edd\u00ed nab\u00edjen\u00ed baterie a z\u00e1rove\u0148 nap\u00e1j\u00ed syst\u00e9m (tzv. NVDC \u2014 Narrow Voltage DC). Umo\u017e\u0148uje &#8222;turbo boost&#8220; nab\u00edjen\u00ed, kdy kombinuje adapt\u00e9r + baterii pro \u0161pi\u010dkov\u00fd v\u00fdkon p\u0159i hern\u00ed z\u00e1t\u011b\u017ei.<\/li><li><strong>VRM (Voltage Regulator Module):<\/strong> M\u011bn\u00ed 19 V na n\u00edzk\u00e1 nap\u011bt\u00ed pro CPU (0,7\u20131,4 V Vcore), GPU, RAM (1,1 V pro DDR5), PCH (0,85 V), atd. Pou\u017e\u00edvaj\u00ed se multiph\u00e1zov\u00e9 buck konvertory (2\u20138 f\u00e1z\u00ed) s integrovan\u00fdmi MOSFETy a driver IC. Ka\u017ed\u00e1 f\u00e1ze obsahuje c\u00edvku (induktor) typicky 0,1\u20130,5 \u00b5H a v\u00fdstupn\u00ed kondenz\u00e1tory MLCC (Multilayer Ceramic Capacitor) o stovk\u00e1ch \u00b5F.<\/li><li><strong>Power sequencing:<\/strong> EC \u0159\u00edd\u00ed po\u0159ad\u00ed zap\u00edn\u00e1n\u00ed jednotliv\u00fdch nap\u011b\u0165ov\u00fdch rail\u016f \u2014 CPU core mus\u00ed b\u00fdt a\u017e po VCCIO a VCCSA, jinak hroz\u00ed po\u0161kozen\u00ed.<\/li><\/ol>\n<h2 class=\"wp-block-heading\">N\u00e1vrh na doprovodn\u00fd obr\u00e1zek\/sch\u00e9ma<\/h2>\n<p class=\"wp-block-paragraph\"><strong>Ilustrace:<\/strong> Blokov\u00e9 sch\u00e9ma nap\u00e1jec\u00ed kask\u00e1dy: AC adapt\u00e9r \u2192 Charger IC \u2192 VRM f\u00e1ze \u2192 CPU\/GPU. Detail jednoho buck konvertoru (MOSFET high-side + low-side, c\u00edvka, v\u00fdstupn\u00ed kapacitor). \u0158ez Li-Pol \u010dl\u00e1nkem (anoda, separ\u00e1tor, elektrolyt, katoda).<\/p>\n<h2 class=\"wp-block-heading\">Z\u00e1v\u011br<\/h2>\n<p class=\"wp-block-paragraph\">Nap\u00e1jec\u00ed soustava notebooku je komplexn\u00ed syst\u00e9m, kter\u00fd mus\u00ed efektivn\u011b hospoda\u0159it s energi\u00ed, chr\u00e1nit drah\u00e9 komponenty a z\u00e1rove\u0148 poskytovat \u0161pi\u010dkov\u00fd v\u00fdkon. Od chemie Li-Pol \u010dl\u00e1nk\u016f p\u0159es BMS a\u017e po v\u00edcef\u00e1zov\u00e9 VRM \u2014 ka\u017ed\u00e1 \u010d\u00e1st hraje kl\u00ed\u010dovou roli v celkov\u00e9 spolehlivosti a v\u00fddr\u017ei za\u0159\u00edzen\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u00davod: Srdce energetick\u00e9ho syst\u00e9mu notebooku Nap\u00e1jec\u00ed soustava notebooku je daleko slo\u017eit\u011bj\u0161\u00ed ne\u017e u stoln\u00edho PC. Zat\u00edmco desktop bere energii ze [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,1],"tags":[26,28,29,30,27],"class_list":["post-3323","post","type-post","status-publish","format-standard","hentry","category-napajeni","category-nezarazene","tag-baterie","tag-bms","tag-charger-ic","tag-fuel-gauge","tag-li-pol"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nap\u00e1jec\u00ed kask\u00e1da a baterie: Jak funguje Li-Ion\/Li-Pol \u010dl\u00e1nek a jak z\u00e1kladn\u00ed deska \u0159\u00edd\u00ed distribuci energie? - it2506.sspu-opava.eu<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/it2506.sspu-opava.eu\/?p=3323\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nap\u00e1jec\u00ed kask\u00e1da a baterie: Jak funguje Li-Ion\/Li-Pol \u010dl\u00e1nek a jak z\u00e1kladn\u00ed deska \u0159\u00edd\u00ed distribuci energie? - it2506.sspu-opava.eu\" \/>\n<meta property=\"og:description\" content=\"\u00davod: Srdce energetick\u00e9ho syst\u00e9mu notebooku Nap\u00e1jec\u00ed soustava notebooku je daleko slo\u017eit\u011bj\u0161\u00ed ne\u017e u stoln\u00edho PC. 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