{"id":24764,"date":"2014-11-14T07:31:14","date_gmt":"2014-11-14T07:31:14","guid":{"rendered":"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/?p=24764"},"modified":"2014-11-14T09:20:34","modified_gmt":"2014-11-14T09:20:34","slug":"regulation-des-reseaux-le-retour-des-batteries-economiques-a-electrolytes-aqueux","status":"publish","type":"post","link":"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2014\/11\/14\/regulation-des-reseaux-le-retour-des-batteries-economiques-a-electrolytes-aqueux\/","title":{"rendered":"R\u00e9gulation des r\u00e9seaux: le retour des batteries \u00e9conomiques \u00e0 \u00e9lectrolytes aqueux"},"content":{"rendered":"<p>La tension des accumulateurs \u00e0 \u00e9lectrolyte aqueux et donc leurs \u00e9nergies massiques et volumiques sont limit\u00e9es par l&rsquo;\u00e9lectrolyse de l&rsquo;eau, r\u00e9action parasite qui limite les tensions des accumulateurs Ni-Cadmium ou Nickel-M\u00e9tal Hydrure au-dessous de 1.3 Volt et celle des batteries au plomb vers les 2 Volts, miraculeusement\u00a0 favoris\u00e9es par une forte surtension de la r\u00e9action d&rsquo;\u00e9volution d&rsquo;hydrog\u00e8ne sur le plomb en milieu acide.<\/p>\n<p>C&rsquo;est la raison pour laquelle une \u00e9quipe du Japonais Sony a d\u00e9cid\u00e9, il y a quelques d\u00e9cennies de l\u00e0, d&rsquo;industrialiser un accumulateur cylindrique (18650) \u00e0 \u00e9lectrolyte organique pr\u00e9sentant une tension de 3,6 Volts soit 2 \u00e0 3 fois sup\u00e9rieure \u00e0 celles de ses concurrents d&rsquo;alors, \u00e0 \u00e9lectrolytes aqueux.<\/p>\n<p>Bien s\u00fbr, ce saut quantitatif dans les \u00e9nergies massiques et volumiques est bien souvent d\u00e9terminant dans le choix de la batterie pour les applications embarqu\u00e9es. L&rsquo;exemple de la traction des v\u00e9hicules \u00e9lectriques illustre cet imp\u00e9ratif de r\u00e9duction de masse et de volume qui permet d&rsquo;atteindre, au d\u00e9triment du co\u00fbt de l&rsquo;ensemble, des autonomies acceptables en circulation urbaine. Les <a href=\"http:\/\/www.leblogenergie.com\/2013\/01\/25\/un-examen-approfondi-dune-batterie-incertaine\/\" target=\"_blank\">d\u00e9boires r\u00e9cents rencontr\u00e9s lors du lancement du Boeing 787 dreamliner<\/a> illustrent les difficult\u00e9s de ma\u00eetrise de ces syst\u00e8mes batteries hautement inflammables. Les t\u00e9l\u00e9phones cellulaires p\u00e9rissent bien souvent d&rsquo;une faiblesse de la batterie, obsolescence programm\u00e9e intrins\u00e8que \u00e0 la miniaturisation \u00e0 l&rsquo;extr\u00eame de la batterie d&rsquo;un dispositif portable de faible \u00e9paisseur.<\/p>\n<p>Dans les applications fixes, telles que la r\u00e9gulation et le secours de r\u00e9seau \u00e9lectrique, malmen\u00e9 par les dispositifs de g\u00e9n\u00e9ration intermittents, cet imp\u00e9ratif de forte \u00e9nergie volumique et massique disparait au profit d&rsquo;un nouveau param\u00e8tre cl\u00e9\u00a0 qu&rsquo;est l&rsquo;investissement par cycle. Ce param\u00e8tre est d\u00e9fini simplement par le prix initial de la batterie install\u00e9e divis\u00e9 par le nombre de cycles de charge et d\u00e9charge qu&rsquo;elle assurera.<\/p>\n<p>Au milieu du XX\u00e9me si\u00e8cle, cette qualit\u00e9 de robustesse et de longue dur\u00e9e de vie \u00e9tait appr\u00e9ci\u00e9e pour les batteries Nickel-Fer de type EDISON qui pouvaient d\u00e9livrer des milliers de cycles. De robustes chariots \u00e9lectriques de manutention en milieu confin\u00e9 en \u00e9taient alors \u00e9quip\u00e9s, malgr\u00e9 un prix d&rsquo;achat bien sup\u00e9rieur \u00e0 celui des batteries au plomb concurrentes.<\/p>\n<p>Les \u00e9nergies renouvelables intermittentes ne seront finalement acceptables sur les r\u00e9seaux que si elles sont associ\u00e9es \u00e0 des dispositifs de stockage d&rsquo;\u00e9nergie et de r\u00e9gulation de la puissance \u00e9lectrique d\u00e9livr\u00e9e. De ce fait, le besoin de nouvelles batteries \u00e0 faible co\u00fbt d&rsquo;investissement par cycle appara\u00eet sur le march\u00e9 de la r\u00e9gulation des r\u00e9seaux.<\/p>\n<p>C&rsquo;est ce qu&rsquo;a bien compris Aquion Energie qui propose de nouvelles batteries Carbone-MnO2 (FIG.) dont il esp\u00e8re obtenir 3000 \u00e0 5000 cycles de charge-d\u00e9charge sur 24 heures en secours d&rsquo;un syst\u00e8me de g\u00e9n\u00e9ration d&rsquo;\u00e9nergie photovolta\u00efque. La dur\u00e9e du test en vraie grandeur devra s&rsquo;\u00e9taler sur une d\u00e9cennie ou plus.<\/p>\n<p>Ceci n&rsquo;a pas dissuad\u00e9 Total et Shell <a href=\"http:\/\/www.aquionenergy.com\/press-room\/press-releases\/aquion-announces-completion-368-million-financing-round-heels-major\" target=\"_blank\">d&rsquo;investir dans le capital de ce nouvel acteur dans les batteries.<\/a><\/p>\n<p><a href=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2014\/11\/Aquion-Energy.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter  wp-image-24765\" title=\"Aquion Energy\" src=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2014\/11\/Aquion-Energy-300x184.jpg\" alt=\"\" width=\"450\" height=\"276\" srcset=\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2014\/11\/Aquion-Energy-300x184.jpg 300w, https:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2014\/11\/Aquion-Energy.jpg 821w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>ACC\u00c9DER <a href=\"http:\/\/cdn2.hubspot.net\/hub\/147472\/file-1383456194-pdf\/2_Collateral\/Aquion_Technical_Presentation.pdf?t=1415740911644\" target=\"_blank\">\u00e0 la pr\u00e9sentation d&rsquo;Aquion Energy<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>Le 14 Novembre 2014<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La tension des accumulateurs \u00e0 \u00e9lectrolyte aqueux et donc leurs \u00e9nergies massiques et volumiques sont limit\u00e9es par l&rsquo;\u00e9lectrolyse de l&rsquo;eau, r\u00e9action parasite qui limite les tensions des accumulateurs Ni-Cadmium ou Nickel-M\u00e9tal Hydrure au-dessous de 1.3 Volt et celle des batteries au plomb vers les 2 Volts, miraculeusement\u00a0 favoris\u00e9es par une forte surtension de la r\u00e9action [&hellip;]<\/p>\n","protected":false},"author":341,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,10,7],"tags":[],"class_list":["post-24764","post","type-post","status-publish","format-standard","hentry","category-actualites","category-solaire","category-vehicules-electriques"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - 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