{"id":226974,"date":"2013-05-01T22:00:00","date_gmt":"2013-05-01T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/afe-a-echantillonnage-simultane-des-tensions-de-cellules\/"},"modified":"2013-05-01T22:00:00","modified_gmt":"2013-05-01T22:00:00","slug":"afe-a-echantillonnage-simultane-des-tensions-de-cellules","status":"publish","type":"post","link":"https:\/\/test.ecinews.fr\/fr\/afe-a-echantillonnage-simultane-des-tensions-de-cellules\/","title":{"rendered":"AFE \u00e0 \u00e9chantillonnage simultan\u00e9 des tensions de cellules"},"content":{"rendered":"<p>Cette pr&eacute;cision sup&eacute;rieure am&eacute;liore l&rsquo;&eacute;valuation de l&rsquo;&eacute;tat de charge et l&rsquo;&eacute;quilibrage des diff&eacute;rentes cellules de la batterie ce qui, en retour, prolonge l&rsquo;autonomie des batteries Lithium-ion (Li+). De plus, elle maximise l&rsquo;&eacute;nergie disponible, ce qui s&rsquo;av&egrave;re particuli&egrave;rement important pour les batteries modernes qui se d&eacute;chargent avec une tension relativement constante, comme celles &agrave; cathodes LiFePO4. Ces AFE permettent des mesures de tension de cellules ultra pr&eacute;cises de &plusmn;0.5 mV maximum, ce qui les rend bien adapt&eacute;s pour les packs de batterie 48 V ou 65 V utilis&eacute;s dans les onduleurs (UPS), les packs de stockage d&rsquo;&eacute;nergie de r&eacute;seau d&rsquo;&eacute;nergie intelligent &quot;smart grid&quot;, ou les batteries de sauvegarde des syst&egrave;mes de t&eacute;l&eacute;communications.<br \/>\nCes circuits offrent une solution &eacute;conomique, le MAX14921, notamment, qui &eacute;limine jusqu&rsquo;&agrave; deux AFE 6 canaux n&eacute;cessaires &agrave; la gestion de packs batterie 13 &agrave; 16 canaux. En outre, leur souplesse fait qu&rsquo;ils conviennent aussi bien aux applications &agrave; bas co&ucirc;t utilisant un CAN int&eacute;gr&eacute; dans un microcontr&ocirc;leur, qu&rsquo;aux applications de haute pr&eacute;cision utilisant un CAN externe.<br \/>\n&quot;Notre strat&eacute;gie a consist&eacute; &agrave; n&rsquo;int&eacute;grer que l&rsquo;&eacute;chantillonnage de tension des cellules et un amplificateur de haute pr&eacute;cision pour optimiser la pr&eacute;cision, tout en offrant un maximum de souplesse,&quot; d&eacute;clare Tim Leung, Directeur d&rsquo;activit&eacute; chez Maxim Integrated. &quot;Avec un design de BMS (Battery Management System ou syst&egrave;me de gestion de batterie) r&eacute;utilisable pour 3 &agrave; 16 canaux, on peut obtenir des frontaux optimis&eacute;s en termes de sp&eacute;cifications et de co&ucirc;t. Ceci offre &eacute;galement un avantage au niveau time-to-market (rapidit&eacute; de lancement des produits).&quot;<br \/>\n&quot;Le march&eacute; de la gestion de batterie est en croissance de 10% par an, notamment &agrave; cause du besoin d&rsquo;alimentation s&eacute;curis&eacute;e des serveurs cloud. La nouvelle solution Maxim r&eacute;pond &agrave; cette demande du march&eacute; o&ugrave; le co&ucirc;t et la rapidit&eacute; de lancement deviennent primordiaux,&quot; d&eacute;clare Susie Inouye, Directeur de Recherche chez Databeans, une entreprise d&rsquo;&eacute;tudes de march&eacute; qui suit de pr&egrave;s la gestion d&rsquo;&eacute;nergie.<br \/>\nLa version 12 canaux est disponible en bo&icirc;tier TQFP 64 broches de 10 x 10 mm alors que la version 16 canaux est propos&eacute;e en TQFP 80 broches de 12 x 12 mm. Ces deux dispositifs fonctionnent dans la gamme de temp&eacute;rature &eacute;tendue -40 &deg;C &agrave; +85 &deg;C.<\/p>\n<p><a title=\"www.maximintegrated.com\/datasheet\/index.mvp\/id\/7696\" target=\"_blank\" href=\"http:\/\/www.maximintegrated.com\/datasheet\/index.mvp\/id\/7696\" rel=\"noopener\">www.maximintegrated.com\/datasheet\/index.mvp\/id\/7696<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Capables de r\u00e9duire jusqu&rsquo;\u00e0 35% le co\u00fbt de l&rsquo;\u00e9lectronique de gestion des batteries, les circuits frontaux analogiques (AFE) MAX14920 et MAX14921 de Maxim Integrated Products fournissent respectivement jusqu\u2019\u00e0 12 et 16 canaux pour la mesure des tensions de cellules. Ils offrent une pr\u00e9cision de mesure doubl\u00e9e des tensions de cellules gr\u00e2ce \u00e0 une translation en mode commun et \u00e0 un amplificateur int\u00e9gr\u00e9 de haute-pr\u00e9cision qui simplifie la conversion des donn\u00e9es CAN.<\/p>\n","protected":false},"author":22,"featured_media":226975,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1149],"class_list":["post-226974","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>AFE \u00e0 \u00e9chantillonnage simultan\u00e9 des tensions de cellules ...<\/title>\n<meta name=\"description\" content=\"Capables de r\u00e9duire jusqu&#039;\u00e0 35% le co\u00fbt de l&#039;\u00e9lectronique de gestion des batteries, les circuits frontaux analogiques (AFE) MAX14920 et MAX14921 de Maxim...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/test.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/226974\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AFE \u00e0 \u00e9chantillonnage simultan\u00e9 des tensions de cellules\" \/>\n<meta property=\"og:description\" content=\"Capables de r\u00e9duire jusqu&#039;\u00e0 35% le co\u00fbt de l&#039;\u00e9lectronique de gestion des batteries, les circuits frontaux analogiques (AFE) MAX14920 et MAX14921 de Maxim Integrated Products fournissent respectivement jusqu\u2019\u00e0 12 et 16 canaux pour la mesure des tensions de cellules. Ils offrent une pr\u00e9cision de mesure doubl\u00e9e des tensions de cellules gr\u00e2ce \u00e0 une translation en mode commun et \u00e0 un amplificateur int\u00e9gr\u00e9 de haute-pr\u00e9cision qui simplifie la conversion des donn\u00e9es CAN.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/test.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/226974\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2013-05-01T22:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/test.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/import\/eci6446_maxim_bblocks_pr_max149201.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1650\" \/>\n\t<meta property=\"og:image:height\" content=\"1450\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"eeNews Europe\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" 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